US Pat. No. 11,031,919

ELASTIC WAVE DEVICE, DUPLEXER, AND COMMUNICATION DEVICE

KYOCERA Corporation, Kyo...

1. An elastic wave device, comprising:a substrate comprising a piezoelectric substrate;
at least one excitation electrode located on an upper surface of the piezoelectric substrate;
a cover covering the upper surface of the piezoelectric substrate from above the at least one excitation electrode;
at least one first via conductor extending through at least part of the cover from the upper surface of the piezoelectric substrate to an upper surface of the cover;
at least one second via conductor located, on the piezoelectric substrate, inward from the at least one first via conductor in a plan view, the at least one second via conductor extending through at least part of the cover from the upper surface of the piezoelectric substrate to the upper surface of the cover, the at least one second via conductor having a smaller diameter than the at least one first via conductor; and
a conductive layer located on the upper surface of the cover or in the cover, the conductive layer extending over an upper end of the at least one first via conductor and an upper end of the at least one second via conductor,
wherein an upper surface of a portion of the conductive layer that extends over the upper end of the at least one first via conductor comprises a region lower than an upper surface of a portion of the conductive layer that extends over the upper end of at least one second via conductor.

US Pat. No. 11,031,918

MILLIMETER WAVE TRANSMITTER DESIGN

Intel Corporation, Santa...

1. An on-chip transformer circuit for millimeter-wave operation, comprising:a primary winding circuit comprising at least one turn of a primary conductive winding arranged as a first N-sided polygon entirely in a first dielectric layer of a substrate; and
a secondary winding circuit comprising at least one turn of a secondary conductive winding arranged as a second N-sided polygon entirely in a second, different, dielectric layer of the substrate;
a primary center tap port comprising a first conductive connection in a third, different layer of the substrate and coupled to a center point of the primary conductive winding via a plurality of vias; and
a secondary center tap port comprising a second conductive connection in the third layer of the substrate and coupled to a center point of the secondary conductive winding via a plurality of vias,
wherein the primary winding circuit and the secondary winding circuit are arranged to overlap one another at predetermined locations along the primary conductive winding and the secondary conductive winding, wherein the predetermined locations comprise a number of locations less than all locations along the primary conductive winding and the secondary conductive winding.

US Pat. No. 11,031,917

METHOD FOR GENERATING A BIAS CURRENT FOR BIASING A DIFFERENTIAL PAIR OF TRANSISTORS AND CORRESPONDING INTEGRATED CIRCUIT

STMicroelectronics (Rouss...

5. An integrated circuit, comprising:a differential pair of transistors including a first input, a second input, a first intermediate output, a second intermediate output;
a bias current generator configured to generate a bias current for biasing the first intermediate output and the second intermediate output; and
a control loop configured to generate a control voltage arising from a difference in potentials between a potential on the first input and a potential on a node that is configured to receive the bias current, and to generate in response to the control voltage an additional current that is added to the bias current for biasing the first intermediate output and the second intermediate output.

US Pat. No. 11,031,916

CIRCUIT WITH WIDE RANGE INPUT COMMON MODE VOLTAGE OPERATION

TEXAS INSTRUMENTS INCORPO...

1. A circuit, comprising:a first common mode amplifier having a first input, a second input, and a first output;
a second common mode amplifier having a third input, a fourth input, and a second output, wherein the third input is connected to the second input and the fourth input is connected to the first input;
a first gain amplifier having a fifth input, a sixth input, and a third output; and
a second gain amplifier having a seventh input, an eighth input, and a fourth output;
wherein the first output is connected to the fifth and eighth inputs and the second output is connected to the sixth and seventh inputs; and
wherein each of the first and second common mode amplifiers includes:
a first transistor including a first control input and first and second current terminals, wherein the first control input is connected to a first input node of the circuit;
a second transistor including a second control input and third and fourth current terminals, wherein the third current terminal is connected to the first current terminal and the second control input is connected to a second input node of the circuit;
a first current source transistor connected to the first and third current terminals;
a first resistor connected to the second current terminal;
a second resistor connected to the fourth current terminal at an output node of the circuit;
a second current source transistor connected to the second current terminal and the second resistor;
a third transistor including a third control input and fifth and sixth current terminals, wherein the third control input is connected to the first input node of the circuit;
a third resistor connected to the fifth current terminal;
a fourth transistor including a fourth control input and seventh and eighth current terminals, wherein the fourth control input is connected to the second input node of the circuit and the seventh current terminal is connected to the output node; and
a fourth resistor connected to the seventh current terminal at the output node and to the third resistor.

US Pat. No. 11,031,915

BIASING AN AMPLIFIER USING A MIRROR BIAS SIGNAL

SKYWORKS SOLUTIONS, INC.,...

1. A method for providing a bias signal to an amplifying device, the method comprising:receiving a reference signal at a reference port;
directing the reference signal to a reference device that is configured to mirror the amplifying device;
receiving a supply voltage at a power port;
directing the supply voltage to an emitter follower device and to an emitter follower mirror device that are coupled to each other;
receiving an enable signal to selectively couple and decouple the reference port and the reference device;
providing, through the emitter follower mirror device, a mirror bias signal to the reference device; and
providing, through the emitter follower device, the bias signal to the amplifying device through an output port.

US Pat. No. 11,031,914

DIODE LINEARIZER

Mitsubishi Electric Corpo...

1. A diode linearizer, comprising:an RF signal path having one end connected to an RF signal input terminal and another end connected to an RF signal output terminal; and
a plurality of linearizer core units, each of the linearizer core units including:
a diode having an anode and a cathode connected to a ground terminal;
a resistance having one end connected to a bias terminal and another end connected to the anode; and
a capacitor having one end connected to the RF signal path and another end connected to the anode,
wherein the plurality of the linearizer core units are connected in parallel between the RF signal path and the ground terminal.

US Pat. No. 11,031,913

BIAS VOLTAGE CONNECTIONS IN RF POWER AMPLIFIER PACKAGING

Cree, Inc., Durham, NC (...

1. An electronic circuit package housing one or more amplifier circuits, comprising:a first amplifier circuit having source, gate, and drain terminals, the source terminal connected to Radio Frequency (RF) signal ground;
a first RF input connector directly electrically connected to the first amplifier circuit gate terminal;
a first RF output connector directly electrically connected to the first amplifier circuit drain terminal;
a first gate bias voltage connector coupled to the gate terminal of the first amplifier circuit;
a first drain bias voltage connector coupled to the drain terminal of the first amplifier circuit; and
at least one of
a second gate bias voltage connector directly electrically connected to the first gate bias voltage connector; and
a second drain bias voltage connector directly electrically connected to the first drain bias voltage connector.

US Pat. No. 11,031,912

SELF-OPTIMISING RF AMPLIFIER

ETL SYSTEMS LIMITED, Her...

1. An RF amplifier arrangement comprising:an input operable to receive an RF input signal;
an output operable to output an amplified RF signal;
a first amplifier bank located between the input and output, the first amplifier bank comprising a plurality of amplifier stages;
an input level detector operable to measure a signal level of the RF input signal;
a controller operable to control the first amplifier bank, wherein the controller is operable to select one or more configurations of the amplifier stages by selecting one or more of the amplifier stages and/or modifying one or more characteristics of the amplifier stages in dependence upon the signal level of the RF input signal, wherein the controller is operable to apply slope correction to the RF input signal; and
a first switch network configured to selectively connect the amplifier stages of the first amplifier bank to define the configurations; wherein the controller is operable to cause the switch network to select one or more of the configurations in dependence upon the signal level of the RF input signal.

US Pat. No. 11,031,911

ENVELOPE TRACKING INTEGRATED CIRCUIT AND RELATED APPARATUS

Qorvo US, Inc., Greensbo...

1. An envelope tracking (ET) integrated circuit (IC) (ETIC) comprising:an ET voltage circuit configured to generate an ET voltage based on at least one supply voltage;
a supply voltage circuit configured to generate the at least one supply voltage based on at least one supply target voltage; and
a control circuit configured to:
determine a peak of the ET voltage; and
adjust the at least one supply target voltage based on the determined peak of the ET voltage to cause the supply voltage circuit to adjust the at least one supply voltage.

US Pat. No. 11,031,910

POWER AMPLIFIER MODULE

Murata Manufacturing Co.,...

1. A power amplifier module comprising:a power amplifier circuit comprising:
a bipolar transistor configured to amplify power of a radio frequency signal and to output an amplified signal, and
a first diode element; and
a control integrated circuit comprising:
a field-effect transistor, and
a second diode element,
wherein:
the first diode element is a diode connected bipolar transistor,
the second diode element is a diode-connected field-effect transistor, and
the power amplifier circuit and the control integrated circuit are manufactured on different substrates.

US Pat. No. 11,031,909

GROUP DELAY OPTIMIZATION CIRCUIT AND RELATED APPARATUS

Qorvo US, Inc., Greensbo...

1. A group delay optimization circuit comprising:a first input node configured to receive a first signal;
a second input node configured to receive a second signal; and
a control circuit configured to:
sample a first selected signal among the first signal and the second signal in a delay estimation window defined by a second selected signal among the first signal and the second signal to generate a plurality of amplitude samples of the first selected signal;
determine a statistical indicator indicative of a distribution of the first selected signal in the delay estimation window based on the plurality of amplitude samples;
determine a group delay offset between the first signal and the second signal based on the determined statistical indicator; and
reduce the statistical indicator to below a defined threshold in one or more group delay optimization cycles to minimize the group delay offset between the first signal and the second signal.

US Pat. No. 11,031,908

VIBRATION DEVICE, ELECTRONIC APPARATUS, AND VEHICLE

SEIKO EPSON CORPORATION, ...

1. A vibration device comprising:a first substrate including
a first surface and a second surface located at an opposite side of the first surface, and
a first integrated circuit disposed on at least one of the first surface and the second surface;
a second substrate including
a third surface bonded to the second surface,
a fourth surface located at an opposite side of the third surface,
a recess that opens to the third surface, and
a second integrated circuit disposed on the fourth surface; and
a vibration element accommodated in a space defined by an opening of the recess being closed by the first substrate.

US Pat. No. 11,031,907

METHOD AND SYSTEM FOR MONITORING THE QUALITY OF PHOTOVOLTAIC CELLS

1. Method for monitoring the quality of a plurality of photovoltaic cells, the method comprising, for each cell:subjecting the cell to be monitored to an excitation with a determined excitation level;
acquiring at least one luminescence image of the cell to be monitored after excitation;
processing the acquired image;
wherein the method further comprises, for each cell, a preliminary determining of an excitation level adjusted to the cell, the respective adjusted excitation levels of the different cells to be monitored being adapted so that the luminescence intensities of the signals emitted by the different cells are equal to an identical reference luminescence intensity.

US Pat. No. 11,031,906

CURRENT-VOLTAGE CURVE SCAN METHOD FOR PHOTOVOLTAIC MODULE, AND OPTIMIZER

SUNGROW POWER SUPPLY CO.,...

1. A current-voltage (IV) curve scan method for a photovoltaic module, applied to one optimizer in a plurality to optimizers connected in series in a photovoltaic generation system, wherein an input end of each optimizer is connected to at least one photovoltaic module, output ends of the plurality of the optimizers are connected to an inverter, the IV curve scan method comprises:receiving, by the optimizer, an IV curve scan signal sent from a control device;
controlling, by the optimizer, an output voltage of the at least one photovoltaic module corresponding to the optimizer to change from an open-circuit voltage to a preset minimum voltage according to a preset rule, to complete an IV curve scan;
acquiring, by the optimizer, an output current of the at least one photovoltaic module corresponding to the optimizer;
acquiring, by the optimizer, an output voltage of the at least one photovoltaic module corresponding to the optimizer; and
recording, by the optimizer, IV curve data of the at least one photovoltaic module corresponding to the optimizer, based on the output current and the output voltage;
wherein acquiring, by the optimizer, the output current of the at least one photovoltaic module corresponding to the optimizer comprises:
detecting a current of an inductor in a direct current/direct current (DC/DC) converting circuit of the optimizer, and calculating the output current of the photovoltaic module based on the current of the inductor and a duty ratio of a switch transistor connected between the inductor in the DC/DC converting circuit and the photovoltaic module, or
detecting an output current of a DC/DC converting circuit of the optimizer; detecting an output voltage of the DC/DC converting circuit, calculating output power of the DC/DC converting circuit based on the output voltage and the output current of the DC/DC converting circuit; and calculating the output current of the photovoltaic module based on the output voltage of the photovoltaic module in accordance with a power balance principle.

US Pat. No. 11,031,905

INTELLIGENT SAFETY DISCONNECT SWITCHING

SOLANTRO SEMICONDUCTOR CO...

1. A method comprising:detecting, in a switching device that is connected between a PhotoVoltaic (PV) panel and a PV panel string, a low current condition in the PV panel string;
automatically controlling the switching device to disconnect the PV panel from the PV panel string and bypass the PV panel, responsive to detection of the low current condition, the method further comprising:
waiting for a randomly chosen wait time after detecting the low current condition before automatically bypassing the PV panel.

US Pat. No. 11,031,904

GROUNDING CLAMPS

A.K. STAMPING COMPANY, IN...

1. A solar panel assembly, comprising:a plurality of solar panels having respective solar panel frames;
a plurality of mounting rails;
one or more end grounding clamps including
a first side body portion and a second side body portion coupled by a bend formed therebetween having at least one stiffening gusset formed therein such that the first side body portion and the second side body portion are perpendicular to one another,
a first finger and a second finger, the first finger and the second finger extending away from the first side body portion such that the first finger and the second finger directly contact a top surface of a solar panel frame among the respective solar panel frames to maintain the solar panel frame in position,
a first standoff and a second standoff, the first standoff and the second standoff extending perpendicularly from the first side body portion such that the first standoff and the second standoff directly contact a side surface of the solar panel frame among the respective solar panel frames,
a first set of teeth and a second set of teeth, the first set of teeth having a plurality of teeth arranged adjacent to each other and extending at an angle from the first side body portion and positioned between the first finger and the second finger such that the first set of teeth penetrate at an acute angle with the top surface of the solar panel frame among the respective solar panel frames and the second set of teeth having a plurality of teeth arranged adjacent to each other and extending from the second side body portion in a same plane as the second side body portion, and generally perpendicular to the first side body portion, such that the second set of teeth penetrate one of the plurality of mounting rails, and
a first through hole positioned in a center of the first side body portion and a tab extending from the second side body portion, the tab having an aperture being vertically aligned with the first through hole to receive a first bolt, the one or more end grounding clamps securing an end of the solar panel frame among the respective solar panel frames to the one or more mounting rails; and
one or more intermediate grounding clamps including a third set of teeth and a fourth set of teeth and a second through hole to receive a second bolt, the one or more intermediate grounding clamps securing the respective solar panel frames to each other.

US Pat. No. 11,031,903

SOLAR ENERGY SYSTEM FOR USE WITH TUFTED GEOSYNTHETICS ON SLOPING GROUND

Watershed Solar, LLC, Al...

1. A method of securing to a tufted geosynthetic land cover system a solar panel for generation of energy, comprising the steps of:(a) attaching on a tufted geosynthetic land cover a portion of a frame to have a free flap extending from the attached portion; and
(b) securing a solar panel to the flap comprising securing edge portions of a polymeric layer between the flap and the tufted geosynthetic land cover and attaching the solar panel to the polymeric layer.

US Pat. No. 11,031,902

INTEGRATED PHOTOVOLTAIC MODULE MOUNTING SYSTEM FOR USE WITH TUFTED GEOSYNTHETICS

Watershed Solar LLC, Alp...

1. An integrated photovoltaic module mounting system for use with a tufted-geosynthetic cover, comprising:an elongated base plate;
at least one elongated rail coupled to said base plate;
a plurality of brackets for movably coupling to said rail for releasable, slideable movement along a longitudinal length of said rail, each said bracket comprises:
a C-shaped bracket member;
a threaded post coupled to said C-shaped bracket member;
a clamp having a post hole therethrough; and
a threaded nut for threadably coupling to said threaded post extending through the post hole to bear against said clamp for coupling to a photovoltaic module; and
a harness strip having one end coupled to said base plate and an opposite end for coupling to a tufted geosynthetic cover.

US Pat. No. 11,031,901

IRRIGATION MOTOR AND GEARBOX TEMPERATURE MONITORING AND CONTROL SYSTEM

Lindsay Corporation, Oma...

1. A control system for monitoring a wheel drive gearbox of an irrigation system drive train, the wheel drive gearbox including a sensor configured to sense a gearbox operating state of the wheel drive gearbox, the control system comprising:a controller configured to:
receive data from the sensor representing the gearbox operating state;
determine whether the gearbox operating state exceeds a gearbox operating state threshold or indicates a rate of change above a gearbox operating state rate of change threshold; and
if the gearbox operating state exceeds the gearbox operating state threshold or indicates a rate of change above the gearbox operating state rate of change threshold, generate and transmit a command and/or enact an operating change so that the drive train continues to operate such that the gearbox operating state does not exceed the gearbox operating state threshold or indicates that the gearbox operating state rate of change does not exceed the gearbox operating state rate of change threshold.

US Pat. No. 11,031,900

MOTOR DRIVE APPARATUS, REFRIGERATION CYCLE APPARATUS AND AIR CONDITIONER

Mitsubishi Electric Corpo...

1. A motor drive apparatus to drive an electric motor, the motor drive apparatus comprising:inverter modules equivalent in number to phases of the electric motor; and
a controller to generate a PWM signal for driving the inverter modules by using PWM, wherein
each of the inverter modules includes:
a plurality of pairs of switching elements, each pair of switching elements including two switching elements connected in series;
a drive circuit to drive the plurality of pairs of switching elements in accordance with an input signal of the controller; and
a protection circuit to stop the drive circuit when a predetermined threshold voltage value is exceeded regardless of the input signal from the controller,
the plurality of pairs of switching elements is connected in parallel,
a first terminal that is a reference terminal of the plurality of pairs of switching elements, a second terminal that is a reference terminal of the drive circuit, and an input terminal of the protection circuit are independently exposed to an outside, and
the first terminal and the second terminal are connected to a single point on a printed circuit board by a wiring pattern.

US Pat. No. 11,031,899

METHOD FOR OPERATING AN ELECTRONICALLY COMMUTATED SYNCHRONOUS MACHINE, AND ACTUATION CIRCUIT

1. A method for operating an electronically commutated synchronous machine with several phases, wherein an actuation circuit is provided for operating the synchronous machine, said actuation circuit having at least two switches for each phase and a degree of actuation for each phase being periodically ascertained by said actuation circuit, wherein a switch-on period, during which a supply voltage is applied to the respective phase by way of the associated switch, is determined for ascertaining the degree of actuation, the method comprising:measuring current by a single measurement resistor in at least two measurement windows, and
shifting one or more of the switch-on periods of the different phases relative to one another as soon as a difference between switch-on instants of at least two phases falls below a minimum period or a difference between the switch-on periods of at least two phases falls below twice the minimum period.

US Pat. No. 11,031,898

POWER CONVERTER CONTROL DEVICE

MITSUBISHI ELECTRIC CORPO...

1. A power converter control device for performing PWM control for power converters which respectively supply power to a plurality of winding groups of a multiplex-winding electric motor including the plurality of winding groups, the power converter control device comprising:a PWM controller configured to perform the PWM control while switching between an asynchronous PWM control mode using a carrier for the PWM control that is not synchronized with three-phase voltage commands for driving the multiplex-winding electric motor, and a synchronous PWM control mode using a carrier for the PWM control that is synchronized with the three-phase voltage commands for driving the multiplex-winding electric motor, wherein
the synchronous PWM control mode includes at least one of a first synchronous PWM control mode in which voltage commands for the respective winding groups of the multiplex-winding electric motor are subjected to the PWM control using a carrier synchronized with a voltage command for a specific winding group, and a second synchronous PWM control mode in which voltage commands for the respective winding groups of the multiplex-winding electric motor are subjected to the PWM control using respective carriers synchronized with the respective voltage commands, and
the PWM controller performs control while selectively switching between the asynchronous PWM control mode, and both or one of the first synchronous PWM control mode and the second synchronous PWM control mode, on the basis of an operation state of the multiplex-winding electric motor.

US Pat. No. 11,031,897

METHOD AND APPARATUS FOR MITIGATION OF DC BUS PUMP-UP

Rockwell Automation Techn...

1. A method for generating switching commands in a motor drive, the method comprising the steps of:determining a modulation index for a modulation routine in the motor drive;
determining a first percentage of time within a switching period as a function of the modulation index, wherein the first percentage of time corresponds to an active state for the modulation routine; and
determining a second percentage of time within the switching period as a function of the modulation index, wherein:
the second percentage of time corresponds to a zero state for the modulation routine in the motor drive,
the zero state includes a first zero state and a second zero state,
the modulation routine divides the zero state between the first zero state and the second zero state, and
when the modulation index is less than one-half:
the first zero state is used for a first portion of the zero state,
the second zero state is used for a second portion of the zero state,
the first portion of the zero state is not equal to the second portion of the zero state, and
both the first portion and the second portion of the zero state are non-zero.

US Pat. No. 11,031,896

MOTOR DRIVING APPARATUS AND REFRIGERATION CYCLE EQUIPMENT

Mitsubishi Electric Corpo...

1. A motor driving apparatus to drive a motor having windings whose connection state can be switched, said motor driving apparatus, comprising:a connection switching device to switch the connection state;
a control power supply generating circuit to provide a switching power supply to the connection switching device;
an inverter to apply an AC voltage of a variable frequency and a variable voltage value to the motor;
a control device to control the inverter and the connection switching device; and
an electric quantity detector to detect a first electric quantity of the switching power supply, or at least one second electric quantity which varies with the first electric quantity;
wherein, before a fall of a voltage of the switching power supply below a minimum voltage required for operation of the connection switching device, the motor is stopped.

US Pat. No. 11,031,895

MOTOR DRIVE SYSTEM AND AIR CONDITIONER

Mitsubishi Electric Corpo...

1. A motor drive system for driving a motor including a plurality of stator windings, comprising:an inverter to convert a DC voltage supplied from a DC voltage source into an AC voltage and apply the AC voltage to the motor;
a connection switching device disposed between the inverter and the motor and capable of switching a connection state of the stator windings between Y connection and ? connection; and
a controller to perform abnormality determination on a connection state of the connection switching device on the basis of a current value of a current flowing in each of the stator windings,
wherein the controller
performs control on the inverter to repeat
a first operation in which the DC voltage is applied between two phases of the inverter during a first time that is predetermined and
a second operation in which the DC voltage is applied between the two phases during a second time that is predetermined, and
performs abnormality determination on the connection state of the connection switching device on the basis of the current value obtained by the control.

US Pat. No. 11,031,894

MOTOR SYSTEM WITH MULTIPLE CONNECTION BARS

Quanten Technologies, Inc...

1. An apparatus comprising:a rotor magnetically coupled to a stator, the stator comprising a plurality of conductors;
a plurality of connection bars; and
the plurality of conductors divided symmetrically into a plurality of groups and coupled to a plurality of power converters, wherein:
a first end of a conductor is connected to a connection bar;
a second end of the conductor is configured to be coupled to a power converter of the plurality of power converters; and
the plurality of groups of the plurality of conductors is arranged in a symmetrical manner, wherein the plurality of conductors is configured such that the number of poles of the stator can be dynamically adjusted by adjusting currents flowing through the plurality of conductors through controlling the plurality of power converters, and wherein the plurality of conductors is configured to maintain a balanced system after the number of poles of the stator has been dynamically adjusted.

US Pat. No. 11,031,893

MOTOR CONTROL DEVICE

NIDEC TOSOK CORPORATION, ...

1. A motor control device that controls rotation of a motor, the motor control device comprising:a first control unit that performs a feedback control on the motor according to a command value which is input from a host device;
one or a plurality of second control units that perform feedback controls on the motor according to a limit value for limiting an operation of the motor; and
a control switching unit that selects, based on a deviation between the limit value and a measured value of the motor which is related to the limit value, any one control unit of the first control unit and the one or plurality of second control units as a control unit which executes control output to the motor,
wherein the first control unit comprises a first calculation unit that calculates a control value output to the motor, based on a deviation between the command value and a measured value of the motor which is related to the command value,
wherein the one or plurality of second control units respectively comprises a second calculation unit that calculates a control value output to the motor, based on a deviation between the limit value and a measured value of the motor which is related to the limit value, and
wherein the first calculation unit and the one or plurality of second calculation units share a portion of terms of a calculation expression of the control value with each other.

US Pat. No. 11,031,892

APPARATUS AND METHOD FOR DETECTING OVERLOAD OF BLDC MOTOR

HYUNDAI MOTOR COMPANY, S...

1. An apparatus for detecting overload of a brushless direct current (BLDC) motor, comprising:a measurer for measuring a 3-phase current value applied to the BLDC motor to derive a sector value matched with the 3-phase current value;
a determiner for determining whether the sector value is normal by comparing the sector value derived by the measurer with a previous sector value that is previously measured; and
a driving controller for controlling driving of the BLDC motor according to whether the BLDC motor has a fault, determined by the determiner,
wherein, when the sector value and the previous sector value are different by a predetermined number, the determiner determines that the BLDC motor is normal, and when the sector value and the previous sector value are not different by the predetermined number, the determiner determines that the BLDC motor is abnormal.

US Pat. No. 11,031,891

PREDICTIVE FLUX CONTROL FOR INDUCTION MOTOR DRIVES WITH MODIFIED DISTURBANCE OBSERVER FOR IMPROVED TRANSIENT RESPONSE

KING ABDULAZIZ UNIVERSITY...

1. A cascaded finite control set model based predictive flux control system for an induction motor, comprisingan outer speed control loop comprising a disturbance observer based controller (DOBC) with a modified reduced order proportional integral observer (M-ROPIO) configured to minimize load torque estimation error with a low-pass filter (LPF) with a cutoff frequency, wherein the outer speed control loop is configured to generate a reference torque T*, wherein the reference torque T* is limited by a rated torque of the induction motor, wherein the M-ROPIO maintains a substantially steady state value of current irrespective of speed jumps,
an inner torque control loop comprising a weighting-factor-free formulation of model based predictive torque control (MPTC) using modified reference transformation to determine reference flux angle from the reference torque T* generated by the outer speed control loop,
wherein the control system outputs a switching state for the induction motor selected using the reference flux angle.

US Pat. No. 11,031,890

MOTOR DRIVE CONTROL DEVICE

MINEBEA MITSUMI INC., Na...

1. A motor drive control device driving a motor having a first system coil and a second system coil, the motor drive control device comprising:a first drive circuit controlling energization of the first system coil;
a second drive circuit controlling energization of the second system coil;
a first temperature sensor detecting a temperature of the first drive circuit;
a second temperature sensor detecting a temperature of the second drive circuit; and
a signal output circuit outputting an output signal concerning whether or not any one of the first system coil and the second system coil is in an open state, based on a detection result by the first temperature sensor and a detection result by the second temperature sensor.

US Pat. No. 11,031,889

DRIVE DEVICE AND METHOD FOR OPERATING A DRIVE DEVICE

AUDI AG, Ingolstadt (DE)...

1. A drive device, comprising:a first electric machine operable as a generator and a second electric machine operable as a motor, which are electrically connected to one another, so that the second electric machine is operable using electric energy provided by the first electric machine, wherein an energy accumulator for temporarily storing electric energy is electrically connected to the first electric machine and the second electric machine, wherein the first electric machine and the second electric machine are electrically directly connected to one another via an intermediate circuit, wherein the energy accumulator is electrically connected to the intermediate circuit via a switch arrangement both directly and indirectly via a voltage converter.

US Pat. No. 11,031,888

OPERATION OF A ROTATING ELECTRIC MACHINE HAVING TWO POSITION SENSORS

Vitesco Technologies Germ...

1. A method for operating a rotating electric machine having a rotor, a polyphase excitation winding and a commutation apparatus for commutating excitation winding currents of the excitation winding depending on rotor position values for rotor positions of the rotor, comprising:detecting first measurement values for the rotor positions by a first sensor,
detecting second measurement values for the rotor positions by a second sensor, and
forming from weighted mean values of the first measurement values and the second measurement values the rotor position values for the commutation of the excitation winding currents,
wherein, in a first rotation speed range of rotor rotation speeds of the rotor, the first sensor has a higher resolution of the rotor positions than the second sensor, and
wherein, in the first rotation speed range, the first measurement values are given more weight than the second measurement values when forming weighted mean values,
wherein the first sensor comprises at least one magnetoresistive or at least one Hall sensor positioned relative to the rotor to directly sense angular rotor position thereof as the first measurement values for the rotor positions, and
wherein the second sensor comprises at least three Hall switches which are positioned relative to the rotor to directly sense angular rotor position, the at least three Hall switches having an angular resolution of approximately 60 degrees for the rotor positions,
wherein forming the rotor position values for the commutation of the excitation winding currents comprises:
storing a rotation speed threshold value;
determining a difference between the second measurement value and the first measurement value;
determining a ratio of an instantaneous rotational speed value of the rotor to the rotation speed threshold value;
forming a weighting factor based upon the ratio of the instantaneous rotational speed value of the rotor to the rotation speed threshold value;
forming a weighted product based upon a product of the weighting factor and a difference between the first measurement value and the second measurement value; and
forming a weighted mean value of the first measurement value and the second measurement value as a sum of the first measurement value and the weighted product, and
wherein the instantaneous rotational speed value of the rotor is based upon the weighted mean value.

US Pat. No. 11,031,887

MOTOR CONTROL DEVICE, VEHICLE HAVING THE SAME AND METHOD OF CONTROLLING THE VEHICLE

Hyundai Motor Company, S...

1. A motor control device comprising:a storage configured to store reference Lissajous values; and
a controller configured to:
apply an excitation signal to a resolver;
receive an output signal output from the resolver;
obtain a Lissajous value corresponding to the received output signal;
determine that an external noise is input when the obtained Lissajous value is different from the reference Lissajous values; and
control driving of a motor based on the obtained Lissajous value when the obtained Lissajous value is equal to any one of the reference Lissajous values,
wherein the controller is configured to:
periodically receive the output signal output from the resolver during driving of the motor;
sequentially obtain Lissajous values corresponding to the periodically received output signals;
obtain an angular acceleration between the adjacent Lissajous values among the sequentially obtained Lissajous values;
when a first one of the obtained Lissajous values is different from the reference Lissajous values, identify first and second angular acceleration values that respectively corresponding to the first obtained Lissajous value and a second obtained Lissajous value which is one of the obtained Lissajous values prior to the first Lissajous value;
determine one of the reference Lissajous values constituting a reference Lissajous curve based on the identified first and second angular accelerations;
recognize an angle of the motor based on the determined reference Lissajous value; and
control the driving of the motor based on the recognized angle of the motor.

US Pat. No. 11,031,886

LEAD ANGLE ADJUSTMENT CIRCUIT

SEMICONDUCTOR COMPONENTS ...

1. A lead angle adjustment circuit, comprising:a first counter having an input and an output;
a multiplier circuit having an input and an output, the input of the multiplier circuit coupled to the output of the first counter;
a subtractor circuit having a first input, a second input, and an output, the first input of the subtractor coupled to the output of the multiplier circuit;
a storage register having an input and an output, the input of the storage register coupled to the output of the first counter;
a slope determination circuit having a first input, a second input, and an output, the first input of the slope determination circuit coupled to the output of the register and the second input of the slope determination circuit coupled for receiving a first control signal;
a multiplier determination circuit having a first input, a second input, and an output, the output of the multiplier circuit coupled to the second input of the subtractor circuit and the second input of the multiplier circuit coupled for receiving a second control signal; and
an addition circuit having an input and an output, the output of the addition circuit coupled to the second input of the subtractor circuit.

US Pat. No. 11,031,885

ELECTRIC POWER GENERATOR FOR A PROJECTILE MOVING THROUGH THE AIR

1. An electric power generator for a projectile moving through the air, comprising:a moving member exposed to air flow and configured to vibrate under the pressure of the air flow; and
an electric machine mechanically connected to said moving member and to a body of the projectile, said electric machine configured to convert mechanical motion of said moving member into electric power; and
a torsional spring having one end attached to said moving member and an opposing end retained by the projectile, wherein said torsional spring and said moving member form a resonant system.

US Pat. No. 11,031,884

CONTROL DEVICE FOR VIBRATION ACTUATOR, METHOD OF CONTROLLING VIBRATION ACTUATOR, ROBOT, ELECTRONIC COMPONENT CONVEYANCE APPARATUS, PRINTER, PROJECTOR, AND VIBRATION DEVICE

Seiko Epson Corporation

1. A control device for a vibration actuator including a driven body and a plurality of resonator bodies having a contact part having contact with the driven body, and causing a rotational vibration in the contact parts of the plurality of resonator bodies by application of a common alternating-current drive signal to the plurality of resonator bodies, and transmitting the rotational vibrations of the plurality of resonator bodies to cause the driven body to make a relative displacement, the control device comprising:a detection signal acquisition section adapted to obtain an alternating-current detection signal corresponding to a vibration of the resonator body from the resonator bodies;
a phase difference detection section adapted to detect a phase difference between the drive signal and the detection signal with respect to the resonator bodies;
a resonator body selection section adapted to select one from the resonator bodies; and
a drive signal control section adapted to adjust a frequency of the drive signal so that the phase difference in the resonator body selected comes closer to a target value.

US Pat. No. 11,031,883

METHOD OF MANUFACTURING ACTUATOR

HONDA MOTOR CO., LTD., T...

3. A method of manufacturing an actuator in which a cylindrical dielectric elastomer layer and cylindrical electrode layers have been concentrically laminated in such a manner that the electrode layers respectively face an inner circumferential surface and an outer circumferential surface of the dielectric elastomer layer, comprising:forming a first electrode layer by providing an electrode material to an outer circumferential surface of a shaft section of a layer forming jig;
forming a dielectric elastomer layer by providing a paste of dielectric elastomer material to an outer circumferential surface of the electrode layer; and
forming a second electrode layer forming by providing the electrode material to the outer circumferential surface of the dielectric elastomer layer,
wherein the forming the dielectric elastomer layer comprises:
providing a plate section that has an insertion hole with a diameter larger than an outer diameter of the electrode layer, wherein the diameter is based on a coating thickness of the paste of dielectric elastomer material,
disposing the paste of the dielectric elastomer material onto the plate section and over the insertion hole, and
inserting a distal end of the shaft section into the insertion hole, whereby the paste of the dielectric elastomer material is coated onto the outer circumferential surface of the electrode layer.

US Pat. No. 11,031,882

MODULAR MULTILEVEL CONVERTER HAVING CAPACITOR DEGRADATION DETERMINATION

MITSUBISHI ELECTRIC CORPO...

1. A power conversion device configured to perform power conversion between a DC circuit and an AC circuit, the power conversion device comprising:power conversion circuitry including a plurality of submodules connected in series to each other,
each of the submodules including a capacitor;
a signal reception unit configured to receive a signal representing a voltage of the capacitor in each of the submodules;
a time calculation unit configured to calculate, during startup of the power conversion device, a charging time of the capacitor during initial charging based on the signal, and to calculate, during a stop of the power conversion device, a discharging time of the capacitor based on the signal; and
a determination unit configured to determine whether the capacitor has degraded or not during the startup of the power conversion device based on a first result of comparison of the charging time calculated by the time calculation unit with a reference charging time serving as a reference for determining degradation of the capacitor, and to determine whether the capacitor has degraded or not during the stop of the power conversion device based on a second result of comparison of the discharging time calculated by the time calculation unit with a reference discharging time serving as a reference for determining degradation of the capacitor.

US Pat. No. 11,031,881

OUTPUT CURRENT SYNTHESIZER AND POWER SUPPLY APPARATUS

NETUREN CO., LTD., Tokyo...

1. An output current synthesizer that synthesizes output currents output from a plurality of power inverter circuits converting direct current power to alternating current power and outputs the synthesized output currents as synthesized current having a predetermined frequency, the output current synthesizer comprising:a pair of conductors which is connected to each of the power inverter circuits and to which the output currents of the power inverter circuits flow;
a reactor which is provided on each of the pairs of conductors and generates magnetic flu x corresponding to a difference between values of currents flowing to the pairs of conductors to reduce the difference between the values of currents;
a pair of conductive members to which the pairs of conductors are connected in parallel; and
a pair of output terminals which is provided on the pair of conductive members and output the synthesized currents,
wherein inductance between connecting positions of the pair of conductors which is connected at a position farthest away from the pair of output terminals in the pair of conductive members and the pair of output terminals is defined as a reference inductance,
wherein one of the pairs of conductors has an inter-conductor distance correlated to a difference of the inductance between the connecting positions of the one of the pairs of conductors and the pair of output terminals, and the reference inductance,
wherein each of the reactors has a first core member and a second core member that are mutually combined and form a ring into which the pair of conductors are insertable,
wherein the ring includes two arcs extending in a separating direction of the pair of conductors on a circumference thereof, and
wherein the first core member and the second core member are separatable in each of the two arcs in the separating direction with a surface intersecting the arcs as a boundary.

US Pat. No. 11,031,880

POWER CONVERTER, MOTOR DRIVING UNIT, AND ELECTRIC POWER STEERING DEVICE

NIDEC CORPORATION, Kyoto...

1. A power converter to convert power from a power supply into power supplied to a motor including n-phase windings, where n is an integer of 3 or more, in which first ends thereof are Y-connected, the power converter comprising:an inverter connected to second ends of the n-phase windings and including n legs each including a low-side switching element and a high-side switching element;
a phase separation relay circuit to switch connection and disconnection between the power supply and the n-phase windings for each phase;
a neutral point leg including a low-side switching element and a high-side switching element and connected to a neutral point node of the motor, in which the first ends of the n-phase windings are Y-connected; and
a neutral point separation relay circuit to switch connection and disconnection between the power supply and the neutral point node; wherein
the phase separation relay circuit is connected between the inverter and the second ends of the n-phase windings and switches connection and disconnection between the n legs of the inverter and the second ends of the n-phase windings for each phase;
the neutral point separation relay circuit switches connection and disconnection between the power supply and the neutral point leg; and
the phase separation relay circuit incudes n phase separation relays connected between the n legs of the inverter and the second ends of the n-phase windings, and the neutral point separation relay circuit includes a first neutral point separation relay connected between a high-side node to which the n legs of the inverter are connected and the high-side switching element of the neutral point leg and a second neutral point separation relay connected between a low-side node to which the n legs of the inverter are connected and the low-side switching element of the neutral point leg.

US Pat. No. 11,031,879

AC TO DC CONVERTER WITH PARALLEL CONVERTER

Futurewei Technologies, I...

1. An apparatus comprising:an AC rectifier configured to generate one or more rectified voltages from an alternating current (AC) voltage having a peak voltage each half cycle;
a bus having a positive line and a negative line, wherein the bus is connected to the AC rectifier to receive a first of the one or more rectified voltages that is between the positive line and the negative line;
a parallel converter connected between the positive line and the negative line of the bus, wherein the parallel converter is connected to the AC rectifier in order to receive a second of the one or more rectified voltages;
a bulk capacitor coupled to the parallel converter, wherein the parallel converter further comprises a switch connected to a first terminal of the bulk capacitor, wherein a second terminal of the bulk capacitor is connected to the negative line of the bus; and
a controller configured to operate the parallel converter in a first mode approximately twice each cycle of the AC voltage in which energy from the second of the one or more rectified voltages is stored in the bulk capacitor and a second mode approximately twice each cycle of the AC voltage in which the energy stored in the bulk capacitor is discharged to the bus to increase a voltage on the bus during at least an initial portion of the second mode, wherein the controller is further configured to operate the parallel converter in the first mode approximately twice each cycle of the AC voltage to transfer charge from the bus to the bulk capacitor to increase a voltage on the bulk capacitor to a greater magnitude than the peak AC voltage, wherein the controller is configured to control the switch in the second mode to use the energy stored in the bulk capacitor to increase the voltage on the bus and to maintain the voltage on the bus at or above a minimum specified bus voltage.

US Pat. No. 11,031,878

RESONANT CONVERTER AND MANUFACTURING METHOD OF TRANSFORMER THEREOF

DELTA ELECTRONICS, INC., ...

1. A resonant converter, comprising:a full bridge circuit comprising a first switch, a second switch, a third switch and a fourth switch, wherein there is a first node between the first switch and the fourth switch, and there is a second node between the second switch and the third switch;
an element comprising at least one inductor or at least one capacitor;
a first branch circuit comprising a first primary winding;
a second branch circuit comprising a second primary winding, wherein the first and second primary windings have the same turn number; and
at least one secondary winding, wherein a transformer is constructed by the first and second primary windings and the at least one secondary winding,
wherein the first branch circuit, the element and the second branch circuit are sequentially coupled in series between the first node and the second node, the first branch circuit and the second branch circuit are symmetrically located with respect to the element, and the first and second branch circuits have the same impedance.

US Pat. No. 11,031,877

SYNCHRONOUS RECTIFIERS WITH REDUCED POWER LOSS AND THE METHOD THEREOF

Chengdu Monolithic Power ...

1. A synchronous rectifier used in an electronic circuit, wherein the electronic circuit has a transformer including a primary winding and a secondary winding, the synchronous rectifier comprising:a synchronous switch, coupled to the secondary winding of the transformer, the synchronous switch being controlled to be periodically turned on and turned off in response to a driven signal to convert an input voltage to an output voltage; and
a first timer, configured to detect a light load condition by detecting a provision and/or absent status of the driven signal, wherein the first timer is reset by the driven signal, and wherein if the driven signal is not provided within a first set time period, the first timer is configured to generate a light load signal to disable a logical and driven circuit and latch off the driven signal, so as to have the synchronous rectifier enter light load mode.

US Pat. No. 11,031,876

FLYBACK CIRCUIT WITH ENERGY RECYCLING AND CONTROL METHOD THEREOF

Monolithic Power Systems,...

8. An isolated voltage converter, comprising:a flyback circuit, comprising:
a primary winding of a transformer;
a primary switch coupled in series to the primary winding; and
a clamp capacitor;
an energy recycle circuit, comprising:
an auxiliary switch, coupled in series to the clamp capacitor to form a branch of the auxiliary switch and the clamp capacitor, wherein the branch is coupled in parallel with the primary winding, or the branch is coupled in parallel with the primary switch;
a recycle control circuit, configured to generate an auxiliary switching signal to control on and off of the auxiliary switch, wherein, the auxiliary switch is turned on during a charging process of the clamp capacitor, and is turned off at an end of an immediate subsequent discharging process of the clamp capacitor;
wherein, the charging process of the clamp capacitor is monitored based on an auxiliary switch voltage signal and an auxiliary switch current signal, and is timed at a first length of time based on the auxiliary switch current signal;
wherein, the immediate subsequent discharging process of the clamp capacitor is timed at a second length of time based on the auxiliary switch current signal;
wherein the second length of time has an equal time length with the first length of time, and wherein the recycle control circuit comprises a timer configured to generate an auxiliary switch off signal, the timer comprising:
an auxiliary switch current conversion circuit, configured to receive the auxiliary switch current signal and to generate a positive half cycle signal valid during the charging process of the clamp capacitor, and a negative half cycle signal valid during the discharging process of the clamp capacitor;
a first timing capacitor, configured to be charged based on the positive half cycle signal;
a second timing capacitor, configured to be charged based on the negative half cycle signal;
a first controlled switch, coupled in parallel with the first timing capacitor, and configured to be controlled by the auxiliary switch off signal;
a second controlled switch, coupled in parallel with the second timing capacitor, and configured to be controlled by the auxiliary switch off signal; and
a comparator, configured to compare a voltage across the first timing capacitor and a voltage across the second timing capacitor, and to generate the auxiliary switch off signal.

US Pat. No. 11,031,875

CONVERTER FOR IMPROVING CONVERSION EFFICIENCY

DELTA ELECTRONICS, INC., ...

8. A converter comprising:an input capacitor;
a primary-side switching circuit, comprising:
a first positive voltage terminal coupled to one terminal of an input voltage; and
a first negative voltage terminal, wherein the first negative voltage terminal and the first positive voltage terminal are coupled to the input capacitor;
a magnetic element circuit coupled to the primary-side switching circuit;
a secondary-side switching circuit coupled to the magnetic element circuit, the secondary-side switching circuit comprising:
a second positive voltage terminal coupled to the first negative voltage terminal; and
a second negative voltage terminal coupled to another terminal of the input voltage, and the second negative voltage terminal and the second positive voltage terminal outputting an output voltage together;
an output capacitor coupled to the secondary-side switching circuit, and
a control device, comprising:
a controller configured to output at least one pulse width modulation signal, wherein a reference ground of the pulse width modulation signal is the second negative voltage terminal;
at least one isolation power supply configured to provide at least one first power supply signal and at least one second power supply signal;
at least one isolation circuit configured to generate at least one control signal based on the at least one first power supply signal and the at least one pulse width modulation signal, wherein a reference ground of the control signal is the second positive voltage terminal;
at least one first drive circuit configured to generate at least one first drive signal based on the at least one control signal and the at least one second power supply signal to control the primary-side switching circuit; and
at least one second drive circuit configured to generate at least one second drive signal based on the at least one pulse width modulation signal and the at least one first power supply signal to control the second-side switching circuit, wherein a reference ground of the at least one first drive signal is the second positive voltage terminal, and a reference ground of the at least one second drive signal is the second negative voltage terminal.

US Pat. No. 11,031,874

ELECTRICAL POWER CONVERSION SYSTEM

Siemens Aktiengesellschaf...

1. An electrical power conversion system for converting a high voltage (HV) from an HV electrical power supply to a low voltage, the electrical power conversion system comprising:a power converter; and
an RC network connected in series said power converter;
said RC network including a plurality of resistive components and a plurality of capacitive components electrically connected in series; and
said RC network further including high resistance drop off elements connected in parallel with said capacitive components;
wherein said RC network and said power converter are connected across a line potential of the HV electrical power supply; and
wherein the line potential of the HV electrical power supply is between 1 kV and 52.5 kV.

US Pat. No. 11,031,873

PRIMARY SIDE BURST MODE CONTROLLER FOR LLC CONVERTER

TEXAS INSTRUMENTS INCORPO...

7. A method comprising:in response to determining, by a controller, that a primary side current of an LLC converter is below a first threshold, increasing an off-time for switches in the LLC converter;
in response to determining, by the controller, that the primary side current is above a second threshold, decreasing the off-time of the switches in the LLC converter, wherein the second threshold is higher than the first threshold;
in response to determining, by the controller, that the primary side current falls below a third threshold, initiate burst mode, wherein the third threshold is higher than the second threshold; and
in response to determining, by the controller, that the primary side current exceeds the third threshold, initiate exiting the burst mode.

US Pat. No. 11,031,872

CONTROLLING OUTPUT VOLTAGE FOR POWER CONVERTER

SEMICONDUCTOR COMPONENTS ...

1. A circuit for controlling a power converter comprising:an overshoot-and-undershoot (OU) signal generator configured to generate a signal indicating detection of an overshoot or an undershoot of an output signal of the power converter; and
a feedback signal modulator including an input node and an output node, the feedback signal modulator being configured to receive a first feedback signal at the input node and the signal indicating detection of the overshoot or the undershoot and to generate a second feedback signal at the output node in response to the first feedback signal and the signal indicating detection of the overshoot or the undershoot,
wherein the feedback signal modulator decouples the output node from the input node to generate the second feedback signal that is different from the first feedback signal when either the overshoot or the undershoot is detected, and couples the output node to the input node to output the first feedback signal as the second feedback signal at the output node when neither the overshoot nor the undershoot is detected,
wherein the OU signal generator includes:
a comparator comparing a tracking signal to an overshoot enable threshold signal or an undershoot enable threshold signal to generate a comparison signal, the tracking signal indicating the output signal of the power converter;
a delay circuit configured to receive the comparison signal and output the received comparison signal with a given delay amount, a time interval during which the output node is decoupled from the input node corresponding to the given delay amount of the delay circuit; and
a flip-flop generating the signal indicating detection of the overshoot or the undershoot and having a pulse width that corresponds to the given delay amount of the delay circuit.

US Pat. No. 11,031,871

LLC RESONANT CONVERTER SYSTEM

DELTA ELECTRONICS, INC., ...

1. A two-branch three-phase resonant converter system, comprising:a first resonant circuit comprising a first three-phase switch circuit, a first LC resonant circuit, a first transformer circuit, and a first three-phase rectifier circuit; and
a second resonant circuit comprising a second three-phase switch circuit, a second LC resonant circuit, a second transformer circuit, and a second three-phase rectifier circuit;
wherein the first transformer circuit comprises a first transformer having one primary side winding and two secondary side windings, a second transformer having one primary side winding and two secondary side windings, and a third transformer having one primary side winding and two secondary side windings;
wherein the second transformer circuit comprises a fourth transformer having one primary side winding and two secondary side windings, a fifth transformer having one primary side winding and two secondary side windings, and a sixth transformer having one primary side winding and two secondary side windings, both the primary side windings in the first transformer circuit and the second transformer circuit have the same number of turns, and all the secondary side windings in the first transformer circuit and the second transformer circuit have the same number of turns;
wherein a first input of the first LC resonant circuit is connected to a first output of the first three-phase switch circuit, a second input of the first LC resonant circuit is connected to a second output of the first three-phase switch circuit, and a third input of the first LC resonant circuit is connected to a third output of the first three-phase switch circuit, a first output, a second output, and a third output of the first LC resonant circuit are respectively connected to one end of the primary side winding of the first transformer, one end of the primary side winding of the second transformer, and one end of the primary side winding of the third transformer, the other end of the primary side winding of the first transformer, the other end of the primary side winding of the second transformer, and the other end of the primary side winding of the third transformer are connected, one secondary side winding of the first transformer and one secondary side winding of the fourth transformer are connected in series between a first input of the first three-phase rectifier circuit and a first common end, one secondary side winding of the second transformer and one secondary side winding of the fifth transformer are connected in series between a second input of the first three-phase rectifier circuit and the first common end, and one secondary side winding of the third transformer and one secondary side winding of the sixth transformer are connected in series between a third input of the first three-phase rectifier circuit and the first common end;
wherein a first input of the second LC resonant circuit is connected to a first output of the second three-phase switch circuit, a second input of the second LC resonant circuit is connected to a second output of the second three-phase switch circuit, and a third input of the second LC resonant circuit is connected to a third output of the second three-phase switch circuit, a first output, a second output, and a third output of the second LC resonant circuit are respectively connected to one end of the primary side winding of the fourth transformer, one end of the primary side winding of the fifth transformer, and one end of the primary side winding of the sixth transformer, the other end of the primary side winding of the fourth transformer, the other end of the primary side winding of the fifth transformer, and the other end of the primary side winding of the sixth transformer are connected, the other secondary side winding of the first transformer and the other secondary side winding of the fourth transformer are connected in series between a first input of the second three-phase rectifier circuit and a second common end, the other secondary side winding of the second transformer and the other secondary side winding of the fifth transformer are connected in series between a second input of the second three-phase rectifier circuit and the second common end, and the other secondary side winding of the third transformer and the other secondary side winding of the sixth transformer are connected in series between a third input of the second three-phase rectifier circuit and the second common end.

US Pat. No. 11,031,870

DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT

FUJI ELECTRIC CO., LTD., ...

1. A drive signal generating circuit for a power supply circuit that includesa rectifier circuit that rectifies an AC voltage,
an inductor configured to be applied with a rectified voltage from the rectifier circuit, and
a transistor that controls an inductor current flowing through the inductor, the drive signal generating circuit generating a drive signal based on an output voltage generated from the AC voltage and the inductor current, the drive signal being used for turning on and off the transistor, the drive signal generating circuit comprising:
a digital signal processing (DSP) circuit having
a DSP core, and
a non-transitory storage medium having program instructions stored thereon, execution of which by the DSP core causes the DSP circuit to provide functions of:
a command-value output unit that outputs a command value for increasing the inductor current when the output voltage is lower than a target level and reducing the inductor current when the output voltage is higher than the target level;
a rectified-voltage calculation unit that calculates a value of the rectified voltage based on an inductance of the inductor and an amount of change in the inductor current in a predetermined time period, the inductor current being a current that increases from zero when the transistor is turned on and decreases to zero when the transistor is turned off; and
an ON-period calculation unit that calculates an ON period in a switching period of the transistor based on the calculated rectified voltage, the command value, the switching period, and the output voltage, the ON period being a time period for causing the output voltage to reach the target level and for changing the inductor current according to the rectified voltage; and
a drive signal output circuit connected to the DSP circuit, the drive signal output circuit outputting the drive signal based on the calculated ON period and the switching period received from the DSP circuit.

US Pat. No. 11,031,869

DUAL MODE SWITCHING REGULATOR WITH PWM/PFM FREQUENCY CONTROL

TEXAS INSTRUMENTS INCORPO...

1. An apparatus comprising:an error amplifier configured to generate an error signal based on a comparison between a feedback voltage received from an output of a power converter and a reference voltage;
a pulse modulation circuit configured to generate a switching control signal for the power converter based on the error signal and an off-time (TOFF) control signal; and
a TOFF modulation circuit coupled between the error amplifier and the pulse modulation circuit, the TOFF modulation circuit configured to generate the TOFF control signal including an extended TOFF based on a comparison between the error signal and a pulse frequency modulation (PFM) threshold signal, in which the TOFF modulation circuit includes: a comparator having a first input configured to receive a pulse width modulation (PWM) reference signal; and a second input configured to receive a PFM control signal representing a difference between the error signal and the PFM threshold signal.

US Pat. No. 11,031,868

SWITCHING CONVERTER WITH PULSE TRUNCATION CONTROL

TEXAS INSTRUMENTS INCORPO...

1. A system, comprising:a switching converter comprising:
a switching circuit; and
a controller coupled to the switching circuit, the controller comprising:
a pulse truncation circuit configured to, in response to detecting a voltage overshoot, truncate a first pulse; and
a compensation circuit coupled to the pulse truncation circuit, the compensation circuit configured to, in response to detecting that the pulse truncation circuit truncates the first pulse, adjust a duration of a second pulse.

US Pat. No. 11,031,867

DIGITAL-TO-ANALOG CONVERTER WITH EMBEDDED MINIMAL ERROR ADAPTIVE SLOPE COMPENSATION FOR DIGITAL PEAK CURRENT CONTROLLED SWITCHED MODE POWER SUPPLY

Cirrus Logic, Inc., Aust...

1. A method comprising:controlling switching behavior of switches of a switch-mode power supply based on a desired physical quantity associated with the switch-mode power supply, wherein the desired physical quantity is based at least in part on a slope compensation signal; and
generating the slope compensation signal to have a compensation value of approximately zero at an end of a duty cycle of operation of the switch-mode power supply, wherein generating the slope compensation signal includes causing the slope compensation to have a starting value at a beginning of each duty cycle by configuring the starting value over one or more switching cycles of the switch-mode power supply.

US Pat. No. 11,031,866

CHARGE PUMP CIRCUIT AND METHOD FOR VOLTAGE CONVERSION

ams International AG, Jo...

1. A charge pump circuit, comprising:a series circuit of a number N of stage circuits,wherein at least one of the stage circuit comprises,a converter circuit,
a stage output,
a stage input coupled via the converter circuit to the stage output,
a first clock input and a second clock input coupled to the converter circuit,
a control input,
an activation transistor having a control terminal coupled to the control input and a first terminal coupled to the stage output,
a control buffer having an input coupled to the control input and an output coupled to a second terminal of the activation transistor, and
a reference potential terminal for receiving a reference potential,wherein in the case that the converter circuit is set in a deactivated state, the activation transistor is set into a conducting state and the control buffer generates an output signal that obtains the reference potential and that is provided to the state output via the activation transistor, and wherein in the case that the converter circuit is set in an activated state, the activation transistor is set into a non-conducting state.

US Pat. No. 11,031,865

CHARGE PUMP CIRCUIT CONFIGURED FOR POSITIVE AND NEGATIVE VOLTAGE GENERATION

STMicroelectronics Intern...

1. A charge pump circuit, comprising:an input voltage node;
an output voltage node;
a first transistor and a second transistor in a cross-coupled configuration, wherein the first transistor is coupled between the input voltage node and a first intermediate node and the second transistor is coupled between the input voltage node and a second intermediate node;
wherein the first and second intermediate nodes are capacitively coupled to receive first and second clock signals that are logical inverses of each other;
a first CMOS switching circuit including a first switching transistor having a source node coupled to receive a first signal at the first intermediate node and a second switching transistor having a source node coupled to receive a third clock signal, wherein the second clock signal is a logical inverse of the third clock signal;
a second CMOS switching circuit including a third switching transistor having a source node coupled to receive a second signal at the second intermediate node and a fourth switching transistor having a source node coupled to receive a fourth clock signal, wherein the first clock signal is a logical inverse of the fourth clock signal;
a third CMOS switching circuit including a fifth switching transistor having a source node coupled to the input node, a sixth switching transistor having a source node coupled to the output node, and wherein a gate node of at least one of the fifth and sixth switching transistors is coupled to receive a third signal at a common drain of the first CMOS switching circuit;
a fourth CMOS switching circuit including a seventh switching transistor having a source node coupled to the input node, an eighth switching transistor having a source node coupled to the output node, and wherein a gate node of at least one of the seventh and eighth switching transistors is coupled to receive a fourth signal at a common drain of the second CMOS switching circuit;
wherein a common drain of the third CMOS switching circuit and a common drain of the fourth CMOS switching circuit are capacitively coupled to respectively receive the first and second clock signals.

US Pat. No. 11,031,864

CHARGE PUMP STABILITY CONTROL

pSemi Corporation, San D...

1. An apparatus to convert a first voltage into a second voltage, the apparatus comprising:a power converter having an input and an output ports, the power converter comprising a charge pump to implement one or more operating cycles, the charge pump to comprise a first and a second nodes;
a clock to generate a clock signal; and
a controller to generate one or more control signals based, at least in part, on the clock signal to control a plurality of switches to facilitate one or more transitions between a first and a second pump states, the first and the second pump states to comprise a full operating cycle of the one or more operating cycles,
the charge pump to comprise a plurality of pump capacitors coupled along a charge transfer path to at least some of the plurality of switches between the first and the second nodes of the charge pump, the second node of the charge pump to be coupled a circuit comprising a current source,
wherein the controller to control at least one switch of the plurality of switches so as to adjust a current to be drawn by the circuit based, at least in part, on at least one measurement obtained at the second node to facilitate maintaining an average output voltage of the power converter substantially at a level of the second voltage.

US Pat. No. 11,031,863

AMPLIFIER CIRCUIT AND METHODS OF OPERATION THEREOF

Cirrus Logic, Inc., Aust...

1. An audio apparatus comprising:a first amplifier configured to receive a first input audio signal and output a first output audio signal to drive a first speaker; and
a charge pump configured to provide a supply voltage to the first amplifier, wherein the charge pump is operable so that a magnitude of the supply voltage is variable based on an indication of an amplitude of the first input audio signal; and
a receiver for wirelessly receiving a wireless signal, wherein the first input audio signal is derived from said wireless signal.

US Pat. No. 11,031,862

SYSTEMS AND METHODS TO BALANCE MAGNETIC FLUX IN A SWITCHED MODE POWER SUPPLY

Illinois Tool Works Inc.,...

1. A welding-type power supply, comprising:a switched mode power supply, comprising:
a transformer configured to transform a bus voltage to a welding-type voltage;
a capacitor in series with a primary winding of the transformer, the capacitor having a capacitor voltage; and
switches configured to control a voltage applied to a series combination of the primary winding of the transformer and the capacitor;
a flux accumulator configured to determine a net flux in the transformer based on a number of volt-seconds applied to the primary winding of the transformer; and
a controller configured to:
detect a transient condition in which the bus voltage exceeds a threshold voltage;
control the duty cycles of the switches to balance the net flux when the capacitor voltage is within a threshold voltage range based on the bus voltage; and
control duty cycles of the switches in response to the transient condition to adjust the capacitor voltage based on the bus voltage.

US Pat. No. 11,031,861

SYSTEM AND METHOD FOR PROTECTION DURING INVERTER SHUTDOWN IN DISTRIBUTED POWER INSTALLATIONS

Solaredge Technologies Lt...

1. A system comprising:a power module comprising an input terminal and an output terminal, wherein the input terminal is configured to receive direct-current input power and the output terminal is configured to output direct-current output power when the power module is enabled;
a receiver circuit configured to:
obtain a measurement at the output terminal of the power module;
obtain a keep-alive signal, comprising a predetermined frequency corresponding to an inverter, by removing a direct-current component of the measurement;
up-convert the keep-alive signal from the predetermined frequency to a second frequency higher than the predetermined frequency; and
generate a control signal based on the keep-alive signal at the second frequency; and
a controller configured to:
detect, based on the control signal, that the keep-alive signal is superimposed on the output terminal of the power module and comprises the predetermined frequency corresponding to the inverter;
enable the power module in response to the detection that the keep-alive signal comprises the predetermined frequency corresponding to the inverter;
detect an absence of the keep-alive signal; and
disable the power module in response to the detection of the absence of the keep-alive signal.

US Pat. No. 11,031,860

INRUSH CURRENT CONTROL DURING STARTING OF RESONANT CONVERTERS

MURATA MANUFACTURING CO.,...

1. A converter with soft start comprising:a transformer;
first and second switches connected to the transformer to supply power to the transformer;
first and second capacitors connected in series, the first capacitor is connected to the first switch and the second capacitor is connected to the second switch;
a controller connected to the first and second switches and arranged to, during startup of the converter, switch the first switch with a variable duty cycle and switch the second switch with either a fixed duty cycle or a variable duty cycle with pulses larger than pulses of the variable duty cycle of the first switch; and
a bleed device arranged to set initial conditions of the converter before startup of the converter by discharging the second capacitor before startup; wherein
the converter is an LLC converter; and
the first and the second capacitors are split resonant capacitors.

US Pat. No. 11,031,859

DEVICE FOR STABILIZING DIRECT CURRENT (DC) DISTRIBUTION SYSTEM

LG ELECTRONICS INC., Seo...

1. A device for stabilizing a direct current (DC) distribution system, wherein the system includes a power supply stage, the device comprising:a capacitor unit coupled in parallel with the power supply stage, wherein the capacitor unit is configured to be charged by a DC voltage supplied from the power supply stage;
an inverter unit including two pairs of driving switching elements and a pair of common switching elements, wherein the inverter unit is configured to convert the voltage charged in the capacitor unit into an AC power and to provide the AC power to a motor connected to the device;
a voltage stabilization unit configured to control the common switching elements based on a charging or discharging signal to charge the capacitor unit with the DC voltage supplied from the power supply stage or to discharge the voltage charged in the capacitor unit to the power supply stage;
a switching unit configured to selectively enable the inverter unit or the voltage stabilization unit; and
a control unit configured to provide the charging or discharging signal to the voltage stabilization unit based on a magnitude of the DC voltage supplied from the power supply stage and to supply a switching signal to the switching unit to control turn-on or turn-off of a plurality of switches included in the switching unit.

US Pat. No. 11,031,858

VOICE COIL MOTOR

TRIPLE WIN TECHNOLOGY (SH...

1. A voice coil motor comprising:a base;
a housing;
a lower-resilient member;
a lens frame;
a coil;
a magnet;
an upper-resilient member;
an upper cover plate; and
a pin arranged on the base; wherein:
the lower-resilient member, the lens frame, the coil, the magnet, the upper-resilient member, and the upper cover plate are arranged in sequence between the base and the housing;
the lens frame and the coil are integrally formed;
the coil is embedded on and surrounds an outer surface of the lens frame;
wherein the base comprises a sidewall comprising a first strengthening piece fixed thereon; the housing comprises a top wall and a side wall perpendicularly extending from a periphery of the top wall; the side wall defines a notch; the housing is arranged on the base; the notch reveals a portion of the first strengthening piece forming a soldering zone.

US Pat. No. 11,031,857

ELECTROMECHANICAL GENERATOR FOR CONVERTING MECHANICAL VIBRATIONAL ENERGY INTO ELECTRICAL ENERGY

PERPETUUM LTD, Romsey (G...

1. An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising:a central mast,
an electrically conductive coil assembly fixedly mounted to the mast, the coil assembly at least partly surrounding the mast,
a mount for the coil assembly extending radially inwardly of the coil assembly and fixing the coil assembly to the mast, wherein the mount comprises a conical wall extending between the coil assembly and the mast,
a magnetic core assembly movably mounted to the mast for linear vibrational motion along an axis about an equilibrium position on the axis, the magnetic core assembly at least partly surrounding the coil assembly and the mast, and
a biasing device mounted between the mast and the magnetic core assembly to bias the magnetic core assembly in opposed directions along the axis towards the equilibrium position.

US Pat. No. 11,031,856

VIBRATION ACTUATOR

MINEBEA MITSUMI, INC., N...

1. A vibration actuator, comprising:a movable body including a magnet disposed on a radially inner side of a coil while being spaced from the coil;
a fixing body including the coil; and
an elastic support portion supporting the movable body in such a way that the movable body is freely movable with respect to the fixing body,
wherein the movable body vibrates with respect to the fixing body in a magnetization direction of the magnet in cooperation with the coil to which power is supplied and the magnet, wherein:
the elastic support portion is a plate-shaped elastic body that includes one end portion fixed to the movable body and is provided to protrude from an outer periphery of the movable body in a radial direction,
the fixing body includes:
a housing accommodates the movable body in such a way that the movable body is capable of vibrating and includes an upper surface portion that is disposed on one side in a vibration direction with respect to the movable body, a lower surface portion that is disposed on the other side in the vibration direction with respect to the movable body, and a peripheral wall portion that surrounds the movable body and extends from the upper surface portion to the lower surface portion, and
a first spring fixing portion and a second spring fixing portion that are disposed on the one side and the other side in the vibration direction relative to each other along an inner surface of the peripheral wall portion inside the housing and cooperate with each other to fix the other end of the elastic support portion while being sandwiched between the first spring fixing portion and the second spring fixing portion,
the first spring fixing portion is a separate body from the housing,
one end of the first spring fixing portion on the one side in the vibration direction is positioned based on the housing,
the other end of the first spring fixing portion on the other side in the vibration direction is positioned based on the second spring fixing portion, and
the one end portion of the first spring fixing portion includes a plurality of protrusions that are to be in contact with the upper surface portion and deformable.

US Pat. No. 11,031,855

LINEAR VIBRATION MOTOR

AAC ACOUSTIC TECHNOLOGIES...

1. A linear vibration motor, comprising a substrate having an accommodation space, a vibration system accommodated in the accommodation space, an elastic member fixing and suspending the vibration system in the accommodation space, and a driving system fixed on the substrate and driving the vibration system to vibrate in a direction perpendicular to a horizontal direction,wherein
the vibration system comprises a magnet;
the driving system comprises an iron core, a first coil and a second coil that are sleeved over and fixed on the iron core and that are stacked with each other, and an auxiliary magnet covering an end of the iron core and fixed on the substrate;
the magnet is disposed around the driving system and the magnet and the driving system are spaced apart from each other; and an orthographic projection of the magnet in a direction of the driving system at least partially falls within the first coil and the second coil.

US Pat. No. 11,031,854

ELECTRONIC DEVICE

MINEBEA MITSUMI INC., Na...

1. An electronic device comprising:a housing;
a contact member attached to the housing; and
a vibration generating device, wherein
the vibration generating device is fixed to the housing, and the vibration generating device includes:
a base; and
a plate displaceable in a direction away from or closer to the base; and
a protruding part provided at the base; and
a first elastic member supporting the plate with respect to the protruding part, wherein
a second elastic member is fixed to each of the plate and the contact member.

US Pat. No. 11,031,853

VARIABLE AIR GAP ALONG AXIAL DIRECTION FOR REDUCING COGGING TORQUE IN PERMANENT MAGNET MOTORS

MANDO CORPORATION, Gyeon...

1. A permanent magnet (PM) motor comprising:a rotor comprising:
a plurality of permanent magnets;
an outer surface disposed radially from a central axis; and
a plurality of magnets forming a portion of the outer surface or located within pockets between the outer surface and the central axis;
a stator in magnetic communication with the plurality of permanent magnets and comprising an inner surface in a spaced apart relationship to the outer surface with a gap therebetween,
wherein the gap has a width that is measured as one half a difference between an outer diameter of the rotor and a corresponding inner diameter of the stator, that varies as a function of axial position along the central axis, and
a first width at a first axial position is different from a second width at a second axial position, and the first and second widths are sized and configured to reduce the cogging torque of the PM motor as compared to an PM motor having a constant gap width of the first or second width.

US Pat. No. 11,031,852

MANUFACTURING METHOD OF STATOR, STATOR, AND BENDING PROCESS MACHINE

TOYOTA JIDOSHA KABUSHIKI ...

1. A manufacturing method of a stator, the stator including a stator core including a plurality of slots that are extended in a radial direction and that are formed at intervals in a circumferential direction; and a plurality of segment coils respectively including a pair of legs that are inserted in different slots, the plurality of segment coils being configured to form a plurality of stator coils by electrical bonding of leading ends of corresponding legs, the manufacturing method comprising:arranging the plurality of segment coils to be adjacent to each other in the radial direction and assembling the plurality of segment coils to the stator core, such that a plurality of the legs are protruded from each of the plurality of slots;
tilting the plurality of legs protruded from the plurality of slots, such that leading ends of two legs adjacent to each other in the radial direction are respectively inclined relative to a shaft center of the stator core and are extended in opposite directions along the circumferential direction;
clamping an intersection of an inner leg located on an inner side in the radial direction and an outer leg located on an outer side in the radial direction by a clamp member, the inner leg and the outer leg being protruded from different slots, being adjacent to each other in the radial direction, and intersecting with each other without any other leading end located in the circumferential direction between respective leading ends thereof when being viewed in the radial direction, the clamp member including a shaft portion, a first claw and a second claw extended from a leading end of the shaft portion and opposed to each other in a radial direction of the shaft portion, and a first movement restrictor and a second movement restrictor formed between the first claw and the second claw in the radial direction of the shaft portion;
holding an inner side face on a leading end side of the inner leg by a bending member, and holding an outer side face on the leading end side of the outer leg by the bending member, the bending member being a tubular member having a hole at a center thereof through which the shaft portion of the clamp member is inserted such that the first claw and the second claw protrude from an end face of the bending member, the bending member including a first holding portion configured to hold the inner side face on a leading end side of the inner leg located on the inner side in the radial direction clamped by the clamp member, and a second holding portion configured to hold the outer side face on the leading end side of the outer leg located on the outer side in the radial direction clamped by the clamp member;
rotating the clamp member and the bending member relative to each other to bend the leading end of the inner leg located on the inner side in the radial direction toward an outer circumferential side of the stator core, and to bend the leading end of the outer leg located on the outer side in the radial direction toward a shaft center side of the stator core; and
welding the leading ends that are opposed to each other.

US Pat. No. 11,031,851

GEAR SYSTEM FOR ELECTRIC VEHICLE

NISSAN MOTOR CO., LTD., ...

1. A gear system for a vehicle used in combination with an inverter and a motor electrically connected to and driven by the inverter, comprising:a gear casing spatially separate from a housing of the motor;
a gear set confined in the gear casing, the gear set including an input shaft coupled with and rotated by the motor, an output shaft, meshed gears, and one or more counter shafts driven only by the meshed gears to mediate transmission of torque from the input shaft to the output shaft;
a spline coupling drivingly interposed between a rotor shaft of the motor and the input shaft, the spline coupling functioning as a resistor; and
a grounding path electrically connecting a connection point on the one or more counter shafts with a body of the vehicle, the connection point being positioned such that at least one engagement among the meshed gears is interposed between the input shaft and the connection point,
wherein the grounding path functions as a resistor for attenuating radio noise flowing from the inverter beyond the connection point toward the output shaft.

US Pat. No. 11,031,850

ROBOT DRIVE WITH ISOLATED OPTICAL ENCODER

Persimmon Technologies Co...

1. A method comprising:providing a read-head comprising a frame, at least one light emitter connected to the frame, and an array of optical sensors connected to the frame;
connecting the read-head to a housing of a motor assembly, where the frame of the read-head is connected to the housing proximate an aperture which extends through the housing; and
locating an environment separation barrier at the aperture to separate a first environmental area inside the housing from a second environmental area in which the array of optical sensors is located, where the environment separation barrier is at least partially transparent and located relative to the array of optical sensors to allow the array of optical sensors to view an image inside the housing through the environment separation barrier and the aperture,
where a rotor is inside the housing and has a position reference member configured to be imaged by the array of optical sensors, where the frame is connected to the housing with at least one seal and the environment separation barrier to seal the aperture to separate a first environmental area inside the housing from a second environmental area outside the housing.

US Pat. No. 11,031,849

LINEAR MOTOR AND OPERATING METHOD THEREOF

DUNKERMOTOREN GMBH, Bonn...

1. A linear motor, comprising:a stator;
a rotor that is axially moveable relative to the stator, wherein the rotor is permanently excited by a rotor magnetic field that is periodic with a first period length (PP) along a longitudinal axis; and
a position detection device configured to detect a position of the rotor in relation to the stator, wherein the position detection device comprises:
at least a first magnetic field sensor (S1) and a second magnetic field sensor (S2), wherein the first magnetic field sensor (S1) and the second magnetic field sensor (S2) are arranged radially inside the stator spaced apart from each other by a first distance (d1) along the longitudinal axis of the rotor or within a 20 percent deviation of the first distance (d1) along the longitudinal axis of the rotor, wherein the first distance (d1) is an odd multiple of one-sixth of the first period length (PP).

US Pat. No. 11,031,848

ELECTRIC MOTOR WITH HARMONIC SHUNTING

Trane International Inc.,...

1. A hermetic AC electric motor for a chiller compressor comprising harmonics shunting such that high frequency harmonics can be shunted from the AC electric motor without the use of one or more filters, wherein the hermetic AC electric motor comprises:a stator; and
a rotor disposed within the stator and in selective magnetic communication with the stator, wherein a fluid gap exists between the rotor and the stator, wherein the fluid gap is configured to receive a cooling fluid, comprising:
a shaft;
a plurality of magnets coupled to the rotor; and
an eddy current shield, situated between the shaft and the plurality of magnets, that is configured to shunt the high frequency harmonics to the shaft, and to the cooling fluid.

US Pat. No. 11,031,847

ELECTRIC DRIVE WITH STATOR WINDING AND CONTROL DEVICE SURROUNDED BY SHIELDING DEVICE

Lenze Drives GmbH, Exter...

1. An electric drive, comprising:a rotor; and
a stator in toothed-coil technology, wherein the stator has a number of individual tooth modules, wherein each individual tooth module has:
a stator winding which is wound around an associated tooth,
a control device which is designed to generate an activation signal for the stator winding, and
a shielding device which surrounds the stator winding and the control device.

US Pat. No. 11,031,846

CO-PACKAGED ELECTRIC MOTOR AND MOTOR DRIVE

ABB Schweiz AG, Baden (C...

1. A co-packaged electric motor and motor drive, comprising:the electric motor comprising a stator, a rotor and a first housing enclosing the stator and the rotor;
the motor drive comprising a plurality of solid state switches converting electrical input power to electrical output power;
a first conductor supplying the electrical input power to the motor drive;
a second conductor connecting the electrical output power to the stator; and
a thermoelectric cooler disposed between the motor drive and the electric motor, a hot side of the thermoelectric cooler being in thermal communication with the housing of the electric motor, and a cold side of the thermoelectric cooler being in thermal communication with the plurality of solid state switches.

US Pat. No. 11,031,845

PRESSURE RELIEF SYSTEMS FOR GENERATORS

Hamilton Sundstrand Corpo...

1. A system for relieving and/or regulating pressure from within a generator casing, comprising:a generator input shaft defining a shaft channel therein; and
at least one rotating valve disposed within the shaft channel of the generator input shaft and in fluid communication with an interior of the generator casing and the atmosphere,
wherein the rotating valve is configured to allow fluid within the generator casing to flow through the generator input shaft to the atmosphere in an open state and while rotating, wherein the generator shaft includes one or more oil collection apertures upstream of the rotating valve and configured to retain oil separated from air due to centrifugal force, wherein the one or more oil collection apertures are ported to the interior of the casing via a port defined in the input shaft to guide oil at least partially radially outward from the aperture, and
wherein the rotating valve is configured to prevent fluid within the generator casing from flowing in a closed state, wherein the rotating valve is an axially moving check valve configured to transition from the closed state to the open state when a pressure differential between the generator casing and the atmosphere exceeds a predetermined threshold.

US Pat. No. 11,031,844

OFF-BOARD POWER AND IMPLEMENT COUPLER FOR A WORK VEHICLE

1. An implement coupler for a work vehicle including a power takeoff configured to provide a mechanical force and an adjustment mechanism to adjust the position of the implement coupler with respect to the work vehicle, the implement coupler comprising:a support frame;
a drive shaft supported by the support frame, the drive shaft including an input to couple to the power takeoff; wherein the drive shaft is configured to transfer mechanical force provided by the power takeoff;
a generator supported by the support frame and operatively connected to the drive shaft, wherein the generator is configured to generate electrical power based on the mechanical force provided through the drive shaft; and
an input drive operatively connected to the generator and to the drive shaft, wherein movement of the input drive responsive to movement of the drive shaft causes the generator to generate the electrical power.

US Pat. No. 11,031,843

BRUSHLESS DC MOTOR POWER TOOL WITH COMBINED PCB DESIGN

MILWAUKEE ELECTRIC TOOL C...

1. A power tool comprising:a housing having a motor housing portion, a handle portion, and a battery interface;
wherein the handle portion spatially connects the motor housing portion and the battery interface;
wherein the battery interface removably receives and supports a battery pack;
a brushless direct current (DC) motor within the motor housing portion and having a rotor and a stator, wherein the rotor is coupled to a motor shaft arranged to rotate about a longitudinal axis, which extends through the motor shaft, and to produce an output outside of the housing;
a combined printed circuit board (PCB) having a Hall sensor, power switching elements configured to drive the brushless DC motor, and a first through-hole, wherein the power switching elements are mounted on the combined PCB in a flat orientation and wherein the longitudinal axis extends through the first through-hole,
wherein all of the power switching elements that are configured to drive the brushless DC motor are mounted on a single face of the combined PCB, the single face facing away from the brushless DC motor; and
wherein the combined PCB includes a plurality of motor lead pads that each include an opening cut out from an outer peripheral edge of the combined PCB, each motor lead pad configured to receive a motor lead wire of the stator;
a heat sink attached to an end of the brushless DC motor, wherein the heat sink has a second through-hole through which the longitudinal axis extends and wherein the heat sink is located between the brushless DC motor and the combined PCB, wherein each of the motor lead wires passes through the heat sink such that a portion of each motor lead wire that is located in a plane defined by the heat sink and perpendicular to the longitudinal axis is fully enclosed by the heat sink; and
a control PCB configured to receive motor positional information from the Hall sensor and control the power switching elements to drive the brushless DC motor;
wherein the control PCB is located between the handle portion and the battery interface;
wherein the control PCB includes a processor and a memory.

US Pat. No. 11,031,842

COMPACT GEAR MOTOR

MMT AG, Zug (CH)

1. A gear motor comprising:a housing enclosing an electric motor driving a reduction gear train with parallel axes having at least one intermediate gear and an output wheel;
said output wheel being a single piece having a tooth crown on either side of which extend cylindrical axial extensions which are each guided by said housing, each one of said extensions having at its respective end a coupling with an external drive element; and
said output wheel being coaxial with a toothed wheel constituting one of said intermediate gears, said toothed wheel being able to rotate freely in relation with one of said axial extensions.

US Pat. No. 11,031,841

ELECTRIC ACTUATOR

NIDEC TOSOK CORPORATION, ...

1. An electric actuator comprising:a motor that comprises a motor shaft rotating around a central axis, a rotor body fixed to the motor shaft, and a stator facing the rotor body via a gap in a radial direction;
a speed reduction mechanism that is coupled to a region of the motor shaft at one side in an axial direction of the motor shaft;
a case that comprises a case wall covering the stator at the other side in the axial direction of the motor shaft and accommodates the motor and the speed reduction mechanism;
an output shaft which extends in the axial direction of the motor shaft at the one side of the motor shaft in the axial direction and to which rotation of the motor shaft is transmitted via the speed reduction mechanism;
a first bearing that is fixed to the motor shaft and supports the motor shaft rotatably;
a second bearing that is fixed to the motor shaft; and
a bearing holder that is arranged at the case wall and holds the first bearing,
wherein the motor shaft has an eccentric shaft portion having an eccentric axis eccentric with respect to the central axis and treats the eccentric axis as a center,
wherein the speed reduction mechanism has
an external gear that is coupled to the eccentric shaft portion via the second bearing,
an internal gear that surrounds an outer side of the external gear in the radial direction so as to be fixed to the case and intermeshes with the external gear,
an output flange that expands outward in the radial direction from the output shaft and is positioned at one side in the axial direction of the external gear, and
a plurality of projecting portions that project in the axial direction from one of the output flange and the external gear toward the other and are disposed along a circumferential direction,
wherein the other of the output flange and the external gear has a plurality of first bore portions disposed along the circumferential direction,
wherein the first bore portion has an inner diameter larger than an outer diameter of the projecting portion,
wherein the plurality of projecting portions are inserted into the plurality of first bore portions, respectively, and support the external gear via an inner surface of the first bore hole in an oscillatory manner around the central axis,
wherein the bearing holder comprises
a cylindrical circumferential wall that is positioned at an outer side in a radial direction of the first bearing, and
a support wall that supports the first bearing from the other side in the axial direction, and
wherein a position adjustment mechanism configured to be capable of moving the support wall in the axial direction is arranged in the bearing holder.

US Pat. No. 11,031,840

DRIVE UNIT FOR AN ELECTRIC BICYCLE

Werner Wirth GmbH, Hambu...

1. A drive unit for an electric bicycle, the drive unit comprising:a drive housing (46); and
a plug-in connector (48), wherein the plug-in connector (48) is connected to the drive housing (46), wherein the plug-in connector (48) includes a plurality of connector contacts (35) and a plurality of plug contacts (22), wherein the plug-in connector comprises a circuit board (27), wherein the plug-in connector (48) comprises a flange (16) by which a housing body (50) of the plug-in connector (48) is mounted inside the drive housing (46), and wherein a distribution conductor track (36) is formed on the circuit board that provides an electrical contact between a first number of connector contacts (35) and a second number of plug contacts (22), wherein the first number is different from the second number.

US Pat. No. 11,031,839

MOTOR AND METHOD OF MANUFACTURING MOTOR

NIDEC CORPORATION, Kyoto...

9. A method of manufacturing a motor, the motor including a rotor comprising a rotation axis; a stator comprising a plurality of coils and that faces the rotor; a cylindrical housing comprising an opening portion at one end in an axial direction, that is provided with an insertion hole that opens towards an axial-direction one end side, and that holds the stator; a plurality of busbars, the coils being connected to the busbars at one end, the plurality of busbars including at other end busbar connecting portions extending in the axial direction; a plurality of terminal pins where terminal connecting portions are formed at one end, the terminal connecting portions being connected to the busbar connecting portions, the busbar connecting portion facing the terminal connecting portion in a first direction orthogonal to the axial direction; and a terminal support that holds the plurality of terminal pins and that is mounted on the opening portion, the method comprising:assembling the stator to which the busbars have been connected and the rotor in an inside of the housing;
mounting the terminal pins on the terminal support; and
mounting the terminal support on the housing and connecting the busbar connecting portions and the terminal connecting portions to each other,
wherein the terminal support comprises a protruding portion that is inserted into the insertion hole, and one of the protruding portion and the insertion hole comprises a fitting portion that is fitted to the other of the protruding portion and the insertion hole, and a guiding portion that is positioned on an insertion-end side of the fitting portion,
wherein, in the connecting the busbar connecting portions and the terminal connecting portions to each other, when a distal end of the protruding portion has been inserted into the insertion hole, the terminal connecting portions are disposed apart from the busbar connecting portions at a predetermined distance in a direction orthogonal to the axial direction,
wherein by bringing the guiding portion into contact with the protruding portion or the insertion hole, the terminal connecting portions approach the busbar connecting portions in a direction opposite to the first direction and after the terminal connecting portions have faced the busbar connecting portions, the fitting portion is fitted to the protruding portion or the insertion hole, and
wherein when the protruding portion comprises the fitting portion and the guiding portion, a center of a distal end of the guiding portion is decentered in the direction opposite to the first direction with respect to a center of the fitting portion; and
when the insertion hole comprises the fitting portion and the guiding portion, a distal end of the guiding portion is decentered in the first direction with respect to the center of the fitting portion.

US Pat. No. 11,031,838

HOUSING UNIT FOR AN ELECTRIC MACHINE

SIEMENS AKTIENGESELLSCHAF...

1. A housing, comprising a first housing unit made of aluminum and/or iron metal and forming a unitary structure composed of a first bearing shield;a flange;
a stator laminated core arranged between the first bearing shield and the flange; and
a common coating made of stainless steel particles which are applied by an additive manufacturing method and metal-adhesively bonded to the unitary structure over its entire outer surface so as to contiguously cover the first bearing shield, the stator laminated core, and the flange.

US Pat. No. 11,031,837

VEHICLE MOTOR UNIT

TOYOTA JIDOSHA KABUSHIKI ...

1. A vehicle motor unit comprising:a motor that includes a rotor arranged rotatably around a rotation axis, a stator disposed on an outer circumferential side of the rotor, and a high voltage portion disposed on the stator; and
a casing unit storing the motor, wherein
the casing unit is made up of multiple casing components including a storage housing, the multiple casing components being fastened to each other and arranged sequentially in a direction of the rotation axis,
the storage housing has a contacting part that is formed on a wall surface of the storage housing facing an outer circumferential surface of the stator and that makes surface contact with the outer circumferential surface of the stator at multiple locations in a circumferential direction of the stator, the multiple locations being spaced apart from each other in the circumferential direction of the stator so as to alternate in the circumferential direction of the stator with other parts of the storage housing that do not make surface contact with the outer circumferential surface of the stator,
a fastening portion of the storage housing that interconnects the storage housing to an other one of the multiple casing components is disposed at a position adjacent to the contacting part of the storage housing that is formed on the wall surface of the storage housing facing the outer circumferential surface of the stator and that makes surface contact with the outer circumferential surface of the stator,
the contacting part of the storage housing that is formed on the wall surface of the storage housing facing the outer circumferential surface of the stator and that makes surface contact with the outer circumferential surface of the stator receives a larger collision load at a time of a vehicle collision as compared to the other parts of the storage housing, and
the contacting part of the storage housing that is formed on the wall surface of the storage housing facing the outer circumferential surface of the stator and that makes surface contact with the outer circumferential surface of the stator has a wall thickness that is larger than a wall thickness of the other parts of the storage housing that are formed on the wall surface of the storage housing facing the outer circumferential surface of the stator and that do not make surface contact with the outer circumferential surface of the stator.

US Pat. No. 11,031,836

STATOR FOR AN ELECTRICAL ROTATING MACHINE

SIEMENS AKTIENGESELLDCHAF...

1. A stator for an electrical rotating machine, said stator comprising:a laminated stator core having coils, each coil having a groove portion, a winding overhang portion and a connecting portion, said winding overhang portion configured as a stator winding overhang board arranged at an end face of the laminated stator core and having an insulating main body and conducting tracks integrated into the insulating main body, each of the conducting tracks formed by a number of partial conducting tracks that are electrically insulated from each other; and
conductors extending in the groove portion, with each of the conductors formed by a number of partial conductors that are electrically insulated from each other,
wherein each of the conductors and an associated one of the conducting tracks of the winding overhang portion are electrically conductively connected in the connecting portion.

US Pat. No. 11,031,835

AXIAL FLUX INDUCTION MOTOR OR GENERATOR

1. A flux induction machine comprising:an axis of rotation;
a rotor centered around and configured to rotate around the axis of rotation;
a shaft passing through the axis of rotation and coupled to the rotor thereby rotating when the rotor rotates;
a first and second stator each centered around the axis of rotation, each of the first and second stators comprising:
an inner ring of high-permeability structures extending axially towards the rotor; and
an outer ring of high-permeability structures arranged further from the axis of rotation than the inner ring and extending axially towards the rotor, wherein an inner radius of the outer ring as measured from the axis of rotation is greater than an outer radius of the rotor as measured from the axis of rotation;
a plurality of inner conductive coils wrapped around one or more of the high-permeability structures in the inner ring; and
a plurality of outer conductive coils wrapped around one or more of the high-permeability structures in the outer ring, wherein a first inner conductive coil of the plurality of inner conductive coils is connected to a first outer conductive coil of the plurality of outer conductive coils to form a single conductive path having two leads accessible from an exterior of the flux induction machine and configured for coupling to an electrical system,
wherein corresponding ones of the outer ring of high-permeability structures between the two stators are closer to each other measured axially than corresponding ones of the inner ring of high-permeability structures between the two stators measured axially.

US Pat. No. 11,031,834

ELECTRIC MACHINE ROTOR END PLATE WITH RAISED FLOW FEATURES

Ford Global Technologies,...

1. A motor assembly comprising:a shaft defining a passageway for coolant;
a rotor fixedly attached to the shaft; and
an endplate held against the rotor, and defining a plenum in fluid communication with the passageway, a plurality of exit holes piercing the plenum, an outer edge, and a plurality of arrays of raised repeating geometrically shaped flow disruptors disposed on an exterior face of the endplate opposite an interior face of the endplate that is adjacent to the rotor and in staggered rows that are radially outside the exit holes and aligned with the outer edge, wherein the raised repeating geometrically shaped flow disruptors of one of the arrays are different than the raised repeating geometrically shaped flow disruptors of another of the arrays.

US Pat. No. 11,031,833

SOLID-STATE IMAGING DEVICE, METHOD OF MANUFACTURING SOLID-STATE IMAGING DEVICE, AND ELECTRONIC APPARATUS

SONY CORPORATION, Tokyo ...

1. A solid-state imaging device, comprising:a laminate including a first semiconductor substrate having a pixel region and at least one second semiconductor substrate having a logic circuit,
wherein the at least one second semiconductor substrate is bonded to the first semiconductor substrate such that the first semiconductor substrate becomes an uppermost layer of the solid-state imaging device; and
a penetration connecting portion that penetrates from the first semiconductor substrate into the at least one second semiconductor substrate, wherein
the penetration connecting portion connects a first wiring layer to a second wiring layer,
the first wiring layer is in the first semiconductor substrate,
the second wiring layer is in the at least one second semiconductor substrate,
the first wiring layer comprises one of Al or Cu,
the first wiring layer comprises an electrode pad, and
a first surface of the electrode pad is exposed through an opening and a second surface, opposite to the first surface, of the electrode pad is in contact with the connected penetration connecting portion.

US Pat. No. 11,031,832

STATOR OF ROTATING ELECTRICAL MACHINE AND METHOD OF MANUFACTURING STATOR OF ROTATING ELECTRICAL MACHINE

KABUSHIKI KAISHA TOSHIBA,...

1. A stator of a rotating electrical machine, comprising:electromagnetic steel plates which are laminated in an axial direction of a stator iron core to form the stator iron core;
spacing strips which are disposed to be interposed in the electromagnetic steel plates for each predetermined set of plates of the electromagnetic steel plates, each of the spacing strips extending in a radial direction of the stator iron core to form ventilation ducts;
a spacing strip attachment plate which is disposed between the spacing strips and the set of plates of the electromagnetic steel plates to fix the spacing strips; and
an insulating layer which covers an entirety of exposed surfaces of the spacing attachment plate and the spacing strips fixed to the spacing strip attachment plate, wherein:
the spacing strips and the spacing strip attachment plate are provided at a first position which is closer to an end of the stator iron core in the axial direction and at a second position which is closer to a center of the stator iron core in the axial direction than the first position, and
the insulating layer is provided on the spacing strips and the spacing strip attachment plate in the first position, and the spacing strips and the spacing strip attachment plate in the second position are not provided with the insulating layer.

US Pat. No. 11,031,831

ELECTRIC MOTOR AND AIR CONDITIONER

Mitsubishi Electric Corpo...

1. An electric motor comprising:an annular stator; and
a consequent-pole-type rotor comprising:
an annular rotor core disposed on an inner side of the annular stator, and
a plurality of permanent magnets disposed inside the annular rotor core and arrayed in a circumferential direction of the annular rotor core,
wherein the annular stator is covered with an unsaturated polyester resin,
wherein a stator core of the annular stator is formed in an annular shape with a plurality of core segments each having a yoke and a tooth projecting from the yoke arrayed such that each of the plurality of core segments is in contact with another adjacent one of the plurality of core segments, and adjacent two of the yokes are connected to each other by a thin-walled portion,
wherein a hole surrounded by the two adjacent yokes is formed between the yokes, the unsaturated polyester resin is provided in the hole, and the unsaturated polyester resin constrains the annular stator when cured, and
wherein a relationship of A>B>0 is satisfied where A is a thickness from an outer peripheral portion of the stator core to an outer peripheral portion of the unsaturated polyester resin, and B is a thickness from an inner peripheral portion of the stator core to an inner peripheral portion of the unsaturated polyester resin.

US Pat. No. 11,031,830

VEHICLE SYSTEM FOR PROVIDING WIFI TO MOBILE DEVICES WITHIN THE VEHICLE

Nissan North America, Inc...

1. A vehicle system for providing a service to a mobile device within a vehicle, comprising:a WiFi emitter configured to emit a plurality of WiFi signals, each of the plurality of WiFi signals corresponding to a respective zone within the vehicle; and
a WiFi control module that selectively controls the WiFi emitter to emit one or more signals to respective zones, wherein each zone corresponds to a particular occupant area within the vehicle, wherein the WiFi emitter is configured to project a zone-specific signal for each respective zone, the zone-specific signal accessible by the mobile device only when the mobile device is within the respective zone.

US Pat. No. 11,031,829

METHOD AND APPARATUS FOR PERFORMING POWER CALIBRATION IN WIRELESS POWER TRANSFER SYSTEM

LG Electronics Inc., Seo...

1. A wireless power transmitter comprising:a power conversion unit configured to transmit, to a wireless power receiver, wireless power generated based on magnetic coupling in a power transfer phase; and
a communication/control unit configured to receive, from the wireless power receiver, a first received power packet and a second received power packet related to power calibration and construct a first power calibration curve based on the first received power packet and the second received power packet and configured to receive, from the wireless power receiver, a third received power packet and a fourth received power packet related to power calibration and construct a second power calibration curve based on the third received power packet and the fourth received power packet.

US Pat. No. 11,031,828

METHOD AND APPARATUS FOR RECEIVING AND TRANSMITTING DATA INFORMATION

LENOVO (BEIJING) CO., LTD...

1. A method, comprising:determining whether information of a wireless power receiving module of a mobile terminal, obtained within a power transmission range by a wireless power transmitting module of a computer, satisfies a preset condition;
in response to the information of the wireless power receiving module satisfying the preset condition, taking over a communication function of the mobile terminal that requires a user interaction; and
in response to the mobile terminal being out of the power transmission range of the computer, or in response to the information of the wireless power receiving module unsatisfying the preset condition, not taking over the communication function from the mobile terminal or transferring the communication function back to the mobile terminal.

US Pat. No. 11,031,827

OPTIMIZING PAIRING OF A WIRELESS POWER TRANSMISSION SYSTEM WITH A WIRELESS POWER RECEIVER CLIENT

OSSIA INC., Redmond, WA ...

1. A wireless power receiver client (WPRC) comprising:a processor configured to:
determine a first pairing quality metric associated with a first pairing with a first wireless power transmission system (WPTS) of a localized system;
determine a second pairing quality metric associated with a second pairing with a second WPTS of the localized system; and
select one of the first WPTS or the second WPTS based on the first pairing quality metric and the second pairing quality metric; and
a receiver configured to receive wireless power from the selected one of the first WPTS or the second WPTS.

US Pat. No. 11,031,826

MAGNETIC FLUX COUPLING STRUCTURES WITH CONTROLLED FLUX CANCELLATION

Auckland Uniservices Limi...

1. An inductive power transfer flux coupling apparatus, the apparatus comprising:a first coil of at least one turn arranged in a first layer, the first coil configured to generate or receive a magnetic coupling flux in a flux coupling region; and
a second coil of at least one turn and at least part of the second coil being arranged in a second layer, the second coil configured to generate a magnetic flux opposing the flux from the first coil,
wherein the flux coupling region is on one side of the first coil, and the second coil is provided on the opposite side of the first coil from the flux coupling region.

US Pat. No. 11,031,825

WIRELESS POWER TRANSMISSION APPARATUS AND METHOD

LG ELECTRONICS INC., Seo...

1. A wireless power transmission apparatus, comprising:a laser light source unit;
a light output unit configured to output laser light generated by the laser light source unit to a light receiving unit of a wireless power reception apparatus for wireless charging;
a Foreign Object (FO) detection unit configured to detect an FO using secondary light;
a light source configured to generate the secondary light;
a beam splitter and a mirror configured to output the generated secondary light;
a photo diode (PD) array configured to receive reflected light; and
a control unit configured to control output of the laser light when the FO is detected by the FO detection unit,
wherein the reflected light is the secondary light output from the FO detection unit reflected by a retro-reflective surface of the wireless power reception apparatus, and
wherein the mirror includes a hole in the middle, and the generated secondary light and the reflected light are reflected at a periphery and not at the middle of the mirror.

US Pat. No. 11,031,824

APPARATUS AND METHOD FOR RF ENERGY HARVESTING

DRAYSON TECHNOLOGIES (EUR...

1. An RF energy harvesting apparatus comprising an energy harvesting antenna carried on a substrate for fixing the antenna to an electrical device, wherein the antenna comprises:a coil comprising two consecutive complete turns of a spiral like pattern provided by a track of conductive material carried on the substrate, wherein the coil provides two loops, wherein the two loops comprise a first loop provided by one of the consecutive complete turns of the spiral like pattern and a second loop provided by the other one of the consecutive complete turns, wherein the second loop is inside the first loop; and
wherein at least one of the first loop and the second loop comprises at least one segment that includes at least one gap in the track that is a discontinuity in the track in which there is no conductive material or a meander, the gap in the track or the meander reduces spatial variations in the H-field in an area circumscribed by the first loop.

US Pat. No. 11,031,823

DYNAMIC VOLUMETRIC REFOCUSING OF ARRAYS

GURU INC., Pasadena, CA ...

1. An RF power delivery system comprising:an N×M array of transmitting elements disposed along N rows and M columns, wherein M an N are integer numbers;
a phase adjustment unit adapted to:
receive information representative of a change in position of a device targeted to receive the RF power wirelessly from the device and generate a codeword in response; and
apply the codeword to adjust phases of the array of transmitting elements, wherein as the device moves from a first position defined by vector R0 to a second position defined by vector R1, a change in the codeword applied to adjust the phase of a first transmitting element positioned m unit vectors from an origin of the array and along a first axis, and n unit vectors from the origin along a second axis, is defined by a path length difference from the first transmitting element to the first and second positions.

US Pat. No. 11,031,822

INTEGRATED CIRCUITS FOR TRANSMITTING WIRELESS POWER, RECEIVING WIRELESS POWER, AND/OR COMMUNICATING WIRELESSLY

Ossia Inc., Redmond, WA ...

1. An integrated circuit configured to receive radio frequency (RF) wireless power, the integrated circuit comprising:multiple antenna ports configured to receive RF wireless power,
wherein at least one of the multiple antenna ports is further configured to:
receive a beacon schedule from a wireless power transmitter (WPT) for beacon broadcasting and RF power delivery to and from the WPT; and
transmit a beacon signal to the WPT according to the beacon schedule, and
wherein the WPT is configured to transmit RF wireless power using multiple open paths from the WPT to the integrated circuit;
a beacon signal unit configured to transmit the beacon signal to the WPT to thereby permit the WPT to determine an identity and location of the integrated circuit,
wherein the beacon signal unit is configured to transmit the beacon signal according to the beacon schedule, and
wherein the beacon schedule is partially based on a time slot when the WPT is to send RF wireless power to the integrated circuit;
a detection unit, for each of the multiple antenna ports, configured to detect received RF wireless power;
a maximum power point tracking (MPPT) unit electronically coupled to the detection unit;
a rectifying unit, for each of the multiple antenna ports, configured to convert received RF wireless power to direct current (DC) power and to output the DC power to an external device or battery; and
a control unit configured to switch the integrated circuit between rectifying RF wireless power and transmitting the beacon signal,
wherein the control unit is configured to send a predetermined voltage to a switch configured to cause at least one of the multiple antenna ports to switch from transmitting the beacon signal to receiving RF wireless power.

US Pat. No. 11,031,821

WIRELESS POWER TRANSMISSION DEVICE

GE Hybrid Technologies, L...

10. A wireless power transmission method using a wireless power transmission apparatus, the method comprising:wirelessly transmitting power from a power source to a wireless power reception apparatus via at least one primary coil of the wireless power transmission apparatus, the wireless power transmission apparatus including first and second capacitors disposed at each end of the primary coil, respectively;
measuring a current or a voltage associated with the power flowing through the primary coil;
receiving power data from the wireless power reception apparatus; and
generating a control signal for controlling the power source based on the power data and the current or voltage flowing in the primary coil.

US Pat. No. 11,031,820

POWER TRANSMITTING DEVICE

PANASONIC CORPORATION, O...

1. A power transmitting device that transmits power to a power receiving device having a power receiving coil in water, the power transmitting device comprising:one or more annular transmitting coils, including an annular power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field;
an annular support member located in an inner space of the annular power transmitting coil,
the inner space being formed by the annular power transmitting coil,
the annular support member including an outer periphery along an inner periphery of the annular power transmitting coil, and
supporting the annular power transmitting coil from the inner space of the annular power transmitting coil;
a power transmitter configured to supply A/C power to the annular power transmitting coil;
a capacitor connected to the transmitting coil, and forming a resonance circuit resonating together with the transmitting coil; and
one or more spacers connected to an inside portion of the annular support member.

US Pat. No. 11,031,819

SYSTEM FOR WIRELESS POWER TRANSFER BETWEEN LOW AND HIGH ELECTRICAL POTENTIAL, AND A HIGH VOLTAGE CIRCUIT BREAKER

ABB Power Grids Switzerla...

1. A system for wireless power transfer in a high voltage environment comprising a power transfer device including a capacitor unit and an inductor unit connected in series to form an LC resonant circuit, wherein the inductor unit is designed to form an envelope with a toroidal shape, the envelope has an insulation gap extending radially from an inner periphery to an outer periphery of the envelope so that an inductor coil with at least one turn extending from one side of the insulation gap to the other side of the insulation gap is formed and ends of each turn are electrically insulated from each other by means of the insulation gap, and the capacitor unit is disposed inside said envelope such that the envelope wraps the capacitor unit and wires between the capacitor unit and the inductor unit.

US Pat. No. 11,031,818

PROTECTION AND CONTROL OF WIRELESS POWER SYSTEMS

WiTricity Corporation, W...

1. A protection system for a wireless power transfer system, the protection system comprising:a differential voltage sensing circuit arranged within a wireless power transfer system to measure a rate of change of a voltage difference between portions of a tunable impedance matching network (TMN) and generate a first signal representing the rate of change of the voltage difference;
a first current sensing circuit arranged to measure a first current and generate a second signal representing the first current, the first current being through the TMN;
a second current sensing circuit coupled to the differential voltage sensing circuit and to the first current sensing circuit, the second current sensing circuit configured to calculate, based on the first signal and the second signal, a second current and generate a third signal representing the second current, the second current being through a resonator coil coupled to the wireless power transfer system; and
fault protection circuitry coupled to respective output terminals of the first current sensing circuit and the second current sensing circuit, the fault protection circuitry configured to bypass the TMN in response to a magnitude of the second signal or a magnitude of the third signal exceeding a respective threshold value.

US Pat. No. 11,031,817

COIL SELECTION IN MULTI-COIL WIRELESS CHARGING SYSTEM

1. A computer-implemented method of training a machine-learned model configured to detect one or more receiver devices on a charging surface of a wireless charging system and output a subset from a plurality of coils of the wireless charging system for charging the one or more receiver devices comprising:obtaining a training data set of desired charging configurations, the training data set includes a plurality of input data vectors associated with signals from the plurality of coils of the wireless charging system and a corresponding plurality of desired charging configurations that includes subsets of coils to be activated; and
training a set of parameters of the machine-learned model using the training data set of desired charging configurations, the training comprising repeatedly performing iterations of:
determining an estimated charging configuration by applying the machine-learned model with a set of parameters to an input data vector from the training data set,
determining a difference between the estimated charging configuration and the desired charging configuration associated with the input data vector, and
updating the set of parameters of the machine-learned model to reduce the difference between the estimated charging configuration and the desired charging configuration associated with the input data vector.

US Pat. No. 11,031,816

TRANSACTION DEVICE CAPABLE OF MANAGING AND ROUTING POWER FROM AN EXTERNAL POWER SOURCE

Capital One Services, LLC...

1. A method comprising:determining, by a transaction device, an amount of power available;
determining, by the transaction device, that the amount of power satisfies a first threshold;
determining, by the transaction device, that the amount of power does not satisfy a second threshold; and
routing, by the transaction device and based on determining that the amount of power satisfies the first threshold and based on determining that the amount of power does not satisfy the second threshold, at least a portion of the amount of power.

US Pat. No. 11,031,815

WIRELESSLY RECHARGEABLE ENERGY STORE

Tecflower AG, Feusisberg...

1. A wirelessly rechargeable energy store, comprising a housing, having a casing wall, in which a converter, a storage core, charging electronics and an antenna structure are arranged along a longitudinal axis,wherein the antenna structure comprises at least two induction loops formed as flat coils, which are arranged in a partly overlapping manner on a flexible printed circuit board,
wherein the printed circuit board together with the at least two induction loops at least partly encloses the storage core in such a way that loop longitudinal extents run at least approximately parallel to the longitudinal axis and loop transverse extents run at least approximately perpendicularly to the longitudinal axis and a first pole of the induction loops is connected to a first pole of the converter and a second pole of the induction loops is connected to a second pole of the converter,
wherein the antenna structure further comprises at least one dipole, and
wherein the dipole is arranged on the printed circuit board and is connected to at least one converter and/or the charging electronics.

US Pat. No. 11,031,814

SYSTEM AND METHOD FOR DETECTING AND IDENTIFYING POWER LINE CARRIER CONTROLLED DEVICES WITHIN AN IRRIGATION SYSTEM

Valmont Industries, Inc.,...

1. A method for detecting and identifying power line carrier controlled devices within an irrigation power system having a PLC BUS and a plurality of PLC powered devices, wherein the method comprises:initializing a controller;
transmitting an identification signal onto the PLC BUS; wherein the identification signal is within the radio band and at a sufficient strength to circulate through the entire irrigation power system;
receiving the transmitted identification signal by a first powered device in the transmission line;
recording the signal strength of the received identification signal by the first powered device;
reducing the level of the received identification signal received by the first powered device by a first predetermined increment;
receiving the transmitted identification signal by a second powered device in the transmission line;
recording the signal strength of the received identification signal by the second powered device;
reducing the level of the received identification signal received by the second powered device by a second predetermined increment;
transmitting the received identification signal from the second powered device to the controller;
receiving the transmitted identification signal at the controller; wherein if the controller determines that the identification signal has not been received after a predetermined amount of time, the controller retransmits the identification signal to the first powered device in the transmission line at an increased level;
polling each powered device for the received strength of the identification signal at each device;
assigning a system ID number to each powered device based on the reported signal levels received by each device; and
sending communication signals to the first powered device based on the system assigned ID number.

US Pat. No. 11,031,813

SYSTEMS AND METHODS FOR AUXILIARY POWER MANAGEMENT OF BEHIND-THE-METER POWER LOADS

LANCIUM LLC, Houston, TX...

1. A system comprising:a first power source comprising a power generation unit, wherein the power generation unit is coupled to a grid and generates power on an intermittent basis;
a second power source;
a flexible datacenter comprising:
a behind-the-meter power input system configured to receive power from (i) the first power source prior to the power undergoing step-up transformation for transmission to the grid, and (ii) the second power source,
a set of always-on systems,
a plurality of computing systems configured to carry out computational operations, and
a datacenter control system; and
a first control system configured to selectively direct power to the behind-the-meter power input system from at least one of the first power source and the second power source such that the set of always-on systems receives continuous power from the behind-the-meter power input system,
wherein the first control system is configured to selectively direct power based on one or more monitored power system conditions that includes availability of behind-the-meter power at the flexible datacenter from the first power source, and
wherein a selection of the first power source causes: (i) the set of always-on systems to receive the continuous power directly from the first power source and (ii) the plurality of computing systems to ramp up power consumption during performance of computational operations.

US Pat. No. 11,031,812

ELECTRIC FIELD POWERED DEVICES IN ELECTRIC POWER SYSTEMS

Schweitzer Engineering La...

1. A system to monitor a condition associated with an electric power system, comprising:a mounting system to mount the system in proximity to a reference conductor in the electric power system;
an electric field power conversion subsystem to generate a usable electric potential from an electric field created by the electric power system and existing between the reference conductor and at least one peripheral conductor;
a sensor powered by the usable electric potential between the reference conductor and the at least one peripheral conductor and configured to obtain a measurement of the condition associated with the electric power system; and
a communication subsystem powered by the usable electric potential between the reference conductor and the at least one peripheral conductor and to communicate the measurement of the condition associated with the electric power system;
wherein the system is configured to physically connect exclusively to the reference conductor.

US Pat. No. 11,031,811

AUXILIARY ENERGY CIRCUIT FOR BATTERY-POWERED POWER TOOL

Milwaukee Electric Tool C...

1. A power tool system for supplying supplemental power to a power tool, the system comprising:a power tool housing;
a motor coupled to an output driver;
a trigger for user control of power tool operation;
a sensor configured to measure an operation characteristic of the power tool;
a battery pack selectively coupled to the motor;
an auxiliary energy supply, located within the power tool housing, selectively coupled to the motor; and
a motor controller including an electronic processor and a memory, the memory storing instructions that when executed by the electronic processor configure the motor controller to
receive a control signal from the trigger;
drive the motor utilizing energy from the battery pack in response to the control signal;
receive information from the sensor; and
provide additional energy to the motor from the auxiliary energy supply within the power tool housing depending on the information from the sensor.

US Pat. No. 11,031,810

POWER SUPPLY CIRCUIT AND ELECTRONIC DEVICE

FUJITSU LIMITED, Kawasak...

1. A power supply circuit comprising:a standby power supply;
a first path coupled to the standby power supply;
a main power supply configured to output power a voltage of which is higher than a voltage of power output by the standby power supply;
a second path coupled to the main power supply;
a switch disposed between the first path and the second path; and
a power supply control circuit configured to, upon detection of output of the power from the main power supply, turn on the switch to switch a power supply that supplies power to the first path from the standby power supply to the main power supply, wherein
the power supply control circuit is operated by the power supplied through the first path.

US Pat. No. 11,031,809

SYSTEM AND METHOD FOR EMERGENCY LIGHTING

SIGNIFY HOLDING B.V., Ei...

1. A lighting network, comprising:a plurality of lamps comprising:
a first lamp comprising:
a first direct current (DC) power source configured to provide DC power for the first lamp, and a first controller configured to cause the DC power to be provided to a second lamp when AC power is unavailable from the AC power source; and
the second lamp connected to the first lamp, the second lamp comprising:
a second DC power source configured to power the first lamp and the second lamp based at least on the availability of AC power from the AC power source and the availability of the DC power at the first DC power source;
one or more sensors arranged to detect a presence of a user, and
a second controller, wherein the second controller is configured to send a request signal requesting DC power from the first lamp based on (i) a signal from the one or more sensors provided before the AC power was unavailable and (ii) a status of the second DC power source.

US Pat. No. 11,031,808

POWER SUPPLY SYSTEM

DELTA ELECTRONICS, INC., ...

1. A power supply system, coupled to a load and the power supply system comprising:a power supply apparatus configured to receive an input power and supply power to the load through a power bus, the power supply apparatus comprising:
at least one conversion module, each conversion module comprising:
a current-sharing unit coupled to the power bus, and configured to equally share at least one output current outputted from the at least one conversion module, and
a backup apparatus coupled to the power bus, the backup apparatus comprising:
at least one backup module coupled to the power bus, and
a control unit coupled to the at least one backup module and the current-sharing unit,
wherein when the input power is normal, the power supply apparatus is configured to convert the input power into a first output power, provide the first output power to the power bus, and selectively provide the first output power to charge the backup apparatus; wherein the first output power has a first rated upper-limit value;
wherein when the input power is normal and a required power of the load is greater than the first rated upper-limit value, the backup apparatus is configured to provide a second output power to the power bus so that the sum of the first output power and the second output power meets the required power of the load;
wherein when the input power is normal and the required power is greater than the first rated upper-limit value, the control unit is configured to control the at least one backup module to provide the second output power to the load through the power bus, and the control unit is incorporated with the current-sharing unit to equally share the sum of the at least one output current outputted from the at least one conversion module and an output current provided from the at least one backup module.

US Pat. No. 11,031,807

POWER SUPPLY DEVICE AND POWER SUPPLY SYSTEM

Sumitomo Electric Industr...

1. A power supply device comprising:a power interconnection port connected to a commercial power grid;
an auxiliary input port connected to a stand-alone output terminal of a distributed power supply;
an output port connected to a load;
a storage battery;
a power conversion unit connected to the storage battery and configured to perform charging/discharging of the storage battery through DC/AC bidirectional conversion;
a power interconnection path connecting the power interconnection port to the power conversion unit via a first switch;
a stand-alone power supply path leading from the auxiliary input port via a second switch to the output port;
a storage-battery-side power supply path leading from the storage battery via the power conversion unit to the output port; and
a control unit configured to,
in a case of being interconnected with the commercial power grid, cause the power conversion unit to perform charging/discharging of the storage battery, and
in a case of being disconnected from the commercial power grid, supply a power to the load via one of the stand-alone power supply path and the storage-battery-side power supply path, and in a state of being disconnected from the commercial power grid, when power supply to the load is to be switched between the stand-alone power supply path and the storage-battery-side power supply path, switch the power supply path within a time period that does not influence the load.

US Pat. No. 11,031,806

UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS USING INTERCONNECTED POWER ROUTING UNITS

Eaton Intelligent Power L...

1. A system comprising:a plurality of power routing units, each comprising:
a first AC port;
a second AC port;
a static switch configured to couple and decouple the first AC port and the second AC port;
a DC port; and
a converter circuit coupled between the second AC port and the DC port, wherein the DC ports of the power routing units are coupled in common to a DC bus; and
a control circuit configured to transfer power from a second power routing unit to a load connected to the second AC port of the first power routing unit via the DC bus and the converter circuit of the first power routing unit.

US Pat. No. 11,031,805

POWER CONTROLLER, POWER SUPPLY SYSTEM AND DEVICE AND CONTROL METHOD THEREOF

ASIA PACIFIC FUEL CELL TE...

1. A power controller for a power supply system, wherein the power controller provides a power adjusting mode and/or a charging control mode, so as to control a converting power or an output current of a power converter correspondingly,wherein the power adjusting mode is realized by a power control device, the power control device at least comprises: a divider for receiving a power gain and a power command value and outputting a first power parameter; a first multiplier for receiving a voltage gain and a converting voltage feedback value and outputting a second power parameter; and a second multiplier for receiving a converting current feedback value, the first power parameter and the second power parameter and outputting a first preset output current value, and the power converter adjusts the converting power according to the first preset output current value.

US Pat. No. 11,031,804

POWER CONTROLLER

NXP B.V., Eindhoven (NL)...

1. A power controller for a power device, wherein the power device includes a normal state, the power controller comprising:an input configured to receive fault detection signals attributable to the power device;
an output configured to be coupled to the power device;
wherein the power controller is configured to send a state change signal over the output to change the normal state of the power device to a first fault state for a first time period in response to a first fault detection signal;
wherein the power controller is configured to send a state change signal over the output to change the first fault state of the power device to a second fault state for a second time period in response to a second fault detection signal;
wherein the second fault state configures the power device to enter a safe-operating-state where output power from the power device is reduced to a power level that is less than in the normal state but greater than in an off or disabled state;
wherein the power device is not disabled or deactivated in response to the fault detection signals;
wherein the first fault state is a transient fault state; and
wherein the second fault state is a permanent fault state.

US Pat. No. 11,031,803

START-UP APPARATUS FOR BATTERY MANAGEMENT CIRCUIT AND BATTERY MANAGEMENT SYSTEM HAVING THE SAME

VIA LABS, INC., New Taip...

1. A start-up apparatus of a battery management circuit, the start-up apparatus comprising:a transformer comprising a primary winding, an auxiliary winding, and a secondary winding, wherein a first terminal of the primary winding is coupled to a first external power path;
a switch circuit, wherein a first terminal of the switch circuit is coupled to a second terminal of the primary winding, and a second terminal of the switch circuit is coupled to a second external power path;
a control circuit coupled to the auxiliary winding to receive power, wherein the control circuit controls a conduction state of the switch circuit; and
a rectifier circuit coupled to the secondary winding of the transformer, wherein the rectifier circuit supplies power to the battery management circuit,
wherein the start-up apparatus is supplied with power from an external power source through the first external power path and the second external power path.

US Pat. No. 11,031,802

PORTABLE POWER SYSTEM

V5 SYSTEMS, INC., Fremon...

1. A system, comprising:a first battery having a first battery voltage;
a second battery having a second battery voltage;
a first capacitor bank attached to the first battery;
a second capacitor bank attached to the second battery;
a power management element configured to route current from the first capacitor bank to the first battery when the first battery voltage is less than a first full battery voltage, and wherein when the current from the first capacitor bank is routed to the first battery and when the second battery voltage is less than a second full battery voltage the power management element is configured to route current from the second capacitor bank to the second battery; and
a first power source and a second power source connected to the power management element, wherein the power management element is configured to select at least one of the first power source and the second power source to charge at least one of the first capacitor bank, the second capacitor bank, the first battery, and the second battery based on an input current of the at least one of the first power source and the second power source;
wherein instructions in logic tables direct auto-selection of a highest input current source from one of the first power source and the second power source.

US Pat. No. 11,031,801

POWER SUPPLY UNIT FOR AEROSOL INHALER

Japan Tobacco Inc., Toky...

1. A power supply unit for an aerosol inhaler, the power supply unit comprising:a lithium-ion secondary battery which is a power supply able to discharge a power to a load for generating an aerosol from an aerosol source;
a connector able to be electrically connected to an external power supply;
a charger configured to be able to convert a power which is input from the connector into a charging power for the power supply; and
a control unit which is configured to control discharging of the power supply to the load and which is a separate component from the charger, wherein
the power supply unit further includes:
a conductor which electrically connects the connector and the charger and which is configured to supply the power which is input from the connector to the charger;
a smoothing capacitor which is provided between the connector and the charger so as to be connected in parallel with the charger;
a first circuit board on which the connector is provided;
a second circuit board which is apart from the first circuit board and on which the smoothing capacitor and the charger are provided; and
a conductive member which electrically connects the first circuit board and the second circuit board.

US Pat. No. 11,031,800

DETERMINATION APPARATUS, SURVEILLANCE APPARATUS, SURVEILLANCE SYSTEM, DETERMINATION METHOD, SURVEILLANCE METHOD, AND NON-TRANSITORY STORAGE MEDIUM

NEC CORPORATION, Tokyo (...

1. A determination apparatus comprising:a target information obtaining unit that obtains current position information of an energy storage system;
a position information obtaining unit that obtains an installation position associated with the energy storage system, the installation position being registered in advance by a user having legitimate authority; and
a determination unit that determines whether or not the energy storage system is installed at the installation position on the basis of the current position information of the energy storage system.

US Pat. No. 11,031,799

POWER SUPPLY MANAGEMENT INTEGRATED CIRCUIT, ELECTRONIC DEVICE, AND CONTROL METHOD OF POWER SUPPLY MANAGEMENT INTEGRATED CIRCUIT

Sony Corporation, Tokyo ...

1. A power supply management integrated circuit comprising:a state determination unit configured to determine which one of a plurality of states corresponding to different cycles a charge/discharge state of a battery falls under; and
a battery remaining quantity measurement unit configured to measure a battery remaining quantity of the battery each time when the cycle corresponding to the determined state elapses, wherein
the plurality of states includes a plurality of discharge states respectively having different discharge rates.

US Pat. No. 11,031,798

CHARGER FOR ELECTRONIC CIGARETTE

Shenzhen First Union Tech...

1. A charger for an electronic cigarette, comprising:a housing;
a charging circuit in the housing;
an USB input end extending outside of the housing; and
a charging port for charging an external power supply of the electronic cigarette;
wherein the housing comprises at least two charging ports, each charging port comprises an electrode of connecting the charging circuit;
wherein the charging port having the elastic element further comprises two electrodes, convex outward from a bottom of the charging port; the two electrodes are shaped to be an elastic pin structure.

US Pat. No. 11,031,797

RECHARGEABLE BATTERY JUMP STARTING DEVICE AND BATTERY FRAME

THE NOCO COMPANY, Glenwi...

1. A rechargeable battery jump starting device, comprising:a lithium-ion rechargeable battery having a positive terminal comprising a positive electrically conductive battery member and a negative terminal comprising a negative electrically conductive battery member, the positive electrically conductive battery member and the negative electrically conductive battery member of the lithium-ion rechargeable battery are each provided with a through hole, the lithium-ion rechargeable battery comprising a plurality of lithium-ion rechargeable battery cells connected together in electrical series;
a rigid electrically conductive frame comprising a positive electrically conductive frame connected to the positive electrically conductive battery member of the positive terminal of the lithium-ion rechargeable battery and a negative electrically conductive frame connected to the negative electrically conductive battery member of the negative terminal of the lithium-ion rechargeable battery, the positive electrically conductive frame and negative electrically conductive frame are each provided with a through hole;
a positive battery cable electrically connected at least during operation of the rechargeable battery jump starting device to the lithium-ion rechargeable battery by the positive electrically conductive frame;
a negative battery cable electrically connected at least during operation of the rechargeable battery jump starting device to the lithium-ion rechargeable battery by the negative electrically conductive frame;
a positive battery clamp connected to the positive battery cable;
a negative battery clamp connected to the negative battery cable,
an electrically conductive fastener extending through the respective through holes in the positive electrically conductive battery member of the lithium-ion rechargeable battery and the positive electrically conductive frame for connecting the positive electrically conductive battery member of the positive terminal of the lithium-ion rechargeable battery to the positive electrically conductive frame, and
another electrically conductive fastener extending through the respective through holes in the negative electrically conductive battery member of the lithium-ion rechargeable battery and the negative electrically conductive frame for connecting the negative electrically conductive battery member of the negative terminal of the lithium-ion rechargeable battery to the negative electrically conductive frame.

US Pat. No. 11,031,796

SHORT CIRCUIT AND SOFT SHORT PROTECTION FOR DATA INTERFACE CHARGING

DIALOG SEMICONDUCTOR INC....

1. A flyback converter for charging a mobile device through a data interface cable, comprising:a primary-side controller configured to regulate the cycling of a power switch in a constant-current mode;
a secondary-side controller configured to communicate through a data channel in the data interface cable with a load device to receive a value of a constant load current consumed by the load device during a soft-short circuit detection mode and configured to communicate a value of the constant load current to the primary-side controller, wherein the primary-side controller is configured to:
adjust the cycling of the power switch until the flyback converter enters the constant-current mode in which it drives a constant output current into the data interface cable while the load device consumes the constant load current;
measure the constant output current using a constant current coefficient; and
determine a difference between a measure of the constant output current and the value of the constant load current to detect a soft-short circuit current.

US Pat. No. 11,031,795

BATTERY CARRIER SYSTEM

1. A battery pack carrier, comprising:a housing,
a first interface having at least one of a first rail and a first groove coupled to the housing and configured to mate with at least one of a complementary second groove and a complimentary second rail,
a first electrical connector coupled to the housing and configured to be electrically connected to a second electrical connector of a first power tool so that power may be transmitted between the carrier and the first power tool at a first voltage;
a plurality of battery pack receptacles coupled to the housing, each battery pack receptacle including a third interface including at least one of a third rail and a third groove configured to mate with at least one of a complementary fourth groove and a complimentary fourth rail of a fourth interface of a removable power tool battery pack, each third interface further including a third electrical connector configured to be electrically connected to a fourth electrical connector on the removable power tool battery pack, so that power is transmitted between the battery pack receptacle and the power tool battery pack at a second voltage that is lower than the first voltage,
wherein, when the power tool battery pack is removed from the battery pack receptacle, the at least one of the fourth rail and the fourth groove of the fourth interface is configured to mate with at least one of a complementary fifth groove and a complimentary fifth groove of a second power tool operable at the second voltage with the fourth electrical connector electrically connected to a fifth electrical connector on the second power tool so that power is transmitted between the battery pack and the second power tool at the second voltage.

US Pat. No. 11,031,794

AUTONOMOUS CHARGE BALANCING OF DISTRIBUTED AC COUPLED BATTERIES WITH DROOP OFFSET

Enphase Energy, Inc., Pe...

1. An apparatus for autonomous charge balancing of an energy storage device of a microgrid, comprising:a power conditioner, coupled to the energy storage device, comprising a droop control module for operating the power conditioner, during an autonomous mode of operation, such that the state of charge of the energy storage device is autonomously driven toward the state of charge of at least one other energy storage device of the microgrid.

US Pat. No. 11,031,793

BATTERY AND METHOD OF OPERATING A BATTERY

AUDI AG, Ingolstadt (DE)...

1. A battery for a motor vehicle, comprising multiple battery cells, which have respective battery cell housings with electric terminals, via which the battery cells are electrically interconnected,wherein a cell branch connecting the terminals and having a galvanic cell is arranged in the respective battery cell housings;
wherein a bypass branch for bypassing the respective galvanic cell is arranged in the respective battery cell housings;
wherein each cell branch has a first switching element for opening and closing the cell branch and each bypass branch has a second switching element for opening and closing the bypass branch;
wherein the battery has a control unit, which is designed to control all the switching elements of the battery cells, such that the galvanic cells of the battery cells are connected or bypassed to accommodate a power request of an electric machine of the motor vehicle;
wherein the control unit is designed to control the switching elements of the multiple battery cells only below a specified maximum load applied to the multiple battery cells; and
wherein the control unit is configured to control the switching elements of the multiple battery cells above the specified maximum load only when at least one exceptional condition relating to a traffic situation of the motor vehicle is present.

US Pat. No. 11,031,792

BATTERY CHARGING CONTROL SYSTEM AND METHOD OF OPERATION THEREOF

GE ENERGY POWER CONVERSIO...

1. A system for charging two or more batteries connected together in series, the system comprising:two or more respective hardware subsystems each corresponding to one respective battery of the two or more batteries, each respective hardware subsystem comprising:
a respective battery charging/discharging component electrically coupled to one port of its respective battery for charging, and discharging the respective battery;
a respective battery monitor coupled to another port of its respective battery and configured for sensing state information of the respective battery in series-connection with the other batteries of the two or more batteries, and configured to provide the sensed state information as an output therefrom; and
a respective controller comprising a processor and configured for determining a charging curve of the respective battery responsive to the sensed state information output from the respective battery monitor, the controller creating a dynamic model of the respective battery (i) based upon the determined charging curve and (ii) representing a real time health state of the battery; wherein:
the controller (i) compares the dynamic model with a stored predetermined model for the respective battery, and (ii) adjusts operation of the battery charging component based upon the comparing; and
operation of each of the battery charging components is dynamically adjusted (i) independent from characteristics determined by any of the other battery charging components and (ii) to compensate for drift in charging/discharging characteristics of its corresponding battery.

US Pat. No. 11,031,791

ELECTRONIC ADJUSTING DEVICE FOR ELECTRIC ENERGY STORING APPARATUS OF THE TYPE PROVIDED WITH BATTERIES

Genport S.R.L., Vimercat...

1. An electronic adjusting device for an electric energy storing apparatus of the type provided with batteries, said storing apparatus comprising:a plurality of battery modules electrically connectable with an electric load, said electronic adjusting device comprising a plurality of electronic adjusting units, each comprised in a corresponding battery module to adjust a feeding current provided to said electric load by one or more cells of the corresponding battery module, characterized in that it comprises an electronic bus connected to said electronic adjusting units to make available a bus signal to said electronic adjusting units, which is indicative of a minimum feeding current provided to said electric load, each electronic adjusting unit comprising a first electronic stage adapted to receive and process the bus signal made available by said electronic bus and a first detection signal indicative of the feeding current provided by the cells of the corresponding battery module to said electric load, said first electronic stage being adapted to provide a new modified bus signal to be made available to said adjusting electronic units through said electronic bus, in the case in which the feeding current provided to said electric load by the cells of the corresponding battery module is lower than said minimum feeding current.

US Pat. No. 11,031,790

SYSTEM AND METHOD FOR PROVIDING INTERCONNECTED AND SECURE MOBILE DEVICE CHARGING STATIONS

ChargeItSpot, LLC, Phila...

1. A system for verifying the identity of a user, comprising:a door that selectively opens to allow access to a cavity and selectively closes to block access to the cavity;
a lock configured to selectively lock and unlock the door when the door is closed;
a camera configured to image a user area adjacent to the door;
computing memory having associated therewith code; and
a processor communicatively coupled with the computing memory, configured to execute the code and to:
control the camera to record a first image data of the user area that includes a plurality of first image sets recorded at a plurality of first times;
store the first image data;
control the camera to record a second image data of the user area that includes a second image set recorded at a second time; and
selectively unlock the door based on comparing the second image data to the first image data;
wherein comparing the second image data to the first image data includes:
transmitting the first and second image data to a remotely-located device;
selectively displaying some of the plurality of first images sets on the remotely-located device; and
continuously displaying the second image set on the remotely-located device;
wherein the camera records the second image data of the user area that includes the second image set at the second time when the user in the user area inputs correct input data or incorrect input data.

US Pat. No. 11,031,789

BATTERY PACK MANAGEMENT SYSTEM AND CONTROL METHOD THEREOF

Contemporary Amperex Tech...

1. A battery pack management system, comprising:a controller, an isolation unit, a plurality of battery pack management units, and a plurality of battery packs, wherein:
the plurality of battery pack management units are connected in series by a first daisy chain, and the plurality of battery pack management units are also connected in series by a second daisy chain, each of the battery pack management units is used to manage a corresponding battery pack, the first daisy chain is used to transmit sampled data collected by the battery pack management unit from the corresponding battery pack and transmit control instructions of the controller, the second daisy chain is used to transmit a failure prompt signal which is generated by a battery pack management unit that detects a failure;
the isolation unit comprises a first isolation unit and a second isolation unit;
a first battery pack management unit of the plurality of battery pack management units connected in series is connected to the controller through the first isolation unit, and a last battery pack management unit of the plurality of battery pack management units connected in series is connected to the controller through the second isolation unit;
each of the plurality of battery pack management units comprises a battery management chip; and
communication pins of all battery management chips are connected to form the first daisy chain, and failure pins of all the battery management chips are connected to form the second daisy chain.

US Pat. No. 11,031,788

CHARGING CONTROL METHOD FOR BATTERY BASED ON TIME AND ELECTRONIC DEVICE SUPPORTING THE SAME

Samsung Electronics Co., ...

1. An electronic device comprising:a battery;
a charging circuit;
a temperature senor configured to measure an outside temperature; and
a processor electrically connected to the battery, the charging circuit, and the temperature senor,
wherein the processor is configured to:
obtain context information associated with charging of the battery;
if the context information satisfies a first specified condition, set a timer associated with a charging time of the charging circuit to a first time;
if the context information satisfies a second specified condition, set the timer to a second time;
wherein the first specified condition is a condition that a charging device is a first type device,
wherein the second specified condition is a condition that the charging device is a second type device,
wherein the first type device supplies low charging power than the second type device,
wherein the first time is longer than the second time,
if the context information satisfies a third specified condition, set the time to a third time;
if the context information satisfies a fourth specified condition, set the timer to a fourth time,
wherein the third specified condition is a condition that the outside temperature is less than a first temperature,
wherein the fourth specified condition is a condition that the outside temperature is greater than or equal to the first temperature,
wherein the fourth time is longer than the third time,
charge the battery by using the charging circuit during the first time when the first specified condition is satisfied, during the second time when the second specified condition is satisfied, during the third time when the third specified condition is satisfied, or during the fourth time when the fourth specified condition is satisfied, and
obtain information of at least one of a charging frequency of the battery, a charging speed of the battery, or a state of charge of the battery, as at least partial information of the context information.

US Pat. No. 11,031,787

SYSTEM OF CRITICAL DATACENTERS AND BEHIND-THE-METER FLEXIBLE DATACENTERS

LANCIUM LLC, Houston, TX...

1. A system comprisinga flexible datacenter comprising:
a behind-the-meter power input system configured to receive power from a power generation system prior to the power undergoing step-up transformation for transmission to the grid,
a first power distribution system,
a datacenter control system, and
a first plurality of computing systems powered by the behind-the-meter power input system via the first power distribution system, wherein the flexible datacenter control system is configured to modulate power delivery to the plurality of computing systems based on one or more monitored power system conditions or an operational directive;
a critical datacenter comprising:
a grid-power input system,
a second power distribution system,
a critical datacenter control system, and
a second plurality of computing systems powered by the grid-power input system via the second power distribution system;
a first communication link between the flexible datacenter and the critical datacenter; and
a routing control system configured to (i) identify a computational operation to be performed at a critical datacenter, (ii) determine whether to route the computational operation to the flexible datacenter, and (iii) based on a determination to route the computational operation to the flexible datacenter, cause the computational operation to be sent to the flexible datacenter via the first communication link.

US Pat. No. 11,031,786

POWER CONVERTOR, POWER GENERATION SYSTEM, AND POWER GENERATION CONTROL METHOD

TAIYO YUDEN CO., LTD., T...

1. A power convertor, comprising:a buck-boost circuit to be applied with an input voltage to convert the input voltage into an output voltage for output, thereby performing power conversion, the input voltage being generated by a power generation module that generates direct-current power;
a switch driver powered by the direct-current power generated by the power generation module, to switch the buck-boost circuit;
a switching controller that controls the switch driver to perform maximum power-point tracking to control the power conversion of the buck-boost circuit such that the power generation module generates maximum direct-current power; and
a positive input terminal and a negative input terminal to be applied with the input voltage generated by the power generation module,
wherein, as the maximum power-point tracking, the switching controller:
causes the buck-boost circuit to stop outputting the output voltage, thereby terminating the power conversion, and, in such a state, causes the voltage value of the input voltage from the power generation module to vary in a prescribed voltage range by turning on and off a switch provided in a current path between the positive input terminal and the negative input terminal in the buck-boost circuit while varying a duty factor of the turning on and off of the switch, a lowest voltage value of the prescribed voltage range being equal to or greater than a lowest voltage value at which the switch driver is operable so that the switch driver is sufficiently powered by the input voltage while the voltage value of the input voltage is caused to vary in the prescribed voltage range;
detects a direct-current power between the positive input terminal and negative input terminal generated while the voltage value of the input voltage is caused to vary in the prescribed voltage range so as to obtain a relationship between the direct-current power and the input voltage;
determines, from the obtained relationship between the direct-current power and the input voltage, a voltage value at which the power generation module generates the maximum direct-current power; and
thereafter, resumes the power conversion of the input voltage to the output voltage by controlling the buck-boost circuit such that the input voltage turns to the determined voltage value, thereby causing the power generation module to generate the maximum direct-current power.

US Pat. No. 11,031,785

DEVICE AND METHOD FOR INTELLIGENT CONTROL OF POWER SUPPLY SOURCE CONNECTION

1. A device for intelligent control in low and medium voltage networks for residential, commercial and industrial sites to enable uninterrupted power supply to consumers, using a public grid, renewable energy sources, and backup generator, comprising:a combined unit built in a single and same enclosure consisting of one or several interconnected sections of wall or floor mount, in which the combined unit contains interconnected modules for control of electric energy;
one or more DC/DC converters, including PV maximum power point tracking (MPPT);
one or more AC/DC converters for connecting wind generation or other generation sources of alternate current;
bidirectional AC/DC converters-power inverters, which include built in power transformers and public grid synchronization components, allowing conversion from AC to DC and DC to AC in quantities corresponding to a number of phases of a connected public grid and consumers, in which batteries are connected to a DC bus via a charge control module and BMS, and current and voltage sensors connected to a system control unit and which are installed at an input of every AC/DC and DC/DC converters, at AC and DC bus, and at an input of battery charging system;
the AC/DC, DC/DC, and DC/AC converters are connected to the DC bus via embedded DC voltage regulators for synchronization of DC voltage when multiple devices are connected to the DC bus, and relays at connection points to the DC bus;
at a same time as the bidirectional AC/DC converters-power invertors are operating, bidirectional DC/AC converters are also connected to an AC bus, in which the AC bus is also connected to, using power relays, AC consumers, public grid input, and AC generation units;
at inputs from AC generation sources as well as outputs to consumers, the current and voltage sensors are installed which are connected to the system control unit;
inputs of the device are connection points of external generation sources and public grid power cables in the device, and outputs of the device are connection points of the public grid power cables to the consumers and balancing load;
a public grid connection point is used as input or output of the device when the device is consuming from the public grid or exporting to the public grid accordingly;
a DC/DC convertor is installed at connection points for the DC loads for when voltage of the DC loads differs from voltage of the DC bus;
data communication among modules is performed via connecting all devices to data bus connected also to a microprocessor control unit, in which the microprocessor control unit performs intelligent control and coordination of operation of all the interconnected modules and executing algorithms of power sources connection by sending commands to the interconnected modules and power relays of each converter, grid input or output, backup generator input, consumer loads output, and also enabling connection of the device to external data networks.

US Pat. No. 11,031,784

REACTIVE CURRENT MARGIN REGULATOR FOR POWER SYSTEMS

General Electric Company,...

1. A method for maintaining sufficient reactive current margin in a power system connected to a power grid after a disturbance in the power system, the power system having a power converter, the method comprising:receiving, via a power limiter system of a converter controller of the power converter, a reactive current command and an upper reactive current limit for the power system;
determining, via the power limiter system, a reactive current margin signal as a function of the reactive current command and the upper reactive current limit;
receiving a reference power control signal from a system controller, wherein the reference power control signal is a measured power output of the power system;
generating, via the power limiter system, a power command signal for the power converter based on the reactive current margin signal and the reference power control signal; and,
controlling, via the converter controller, operation of the power converter of the power system based at least partially on the power command signal.

US Pat. No. 11,031,783

METHODS AND SYSTEMS FOR ADJUSTING POWER CONSUMPTION BASED ON A FIXED-DURATION POWER OPTION AGREEMENT

LANCIUM LLC, Houston, TX...

1. A system comprising:a set of computing systems coupled to a behind-the-meter (BTM) power generation source, wherein the set of computing systems is configured to perform computational operations;
a control system configured to:
monitor a set of conditions;
receive power option data that specify: (i) a set of minimum power thresholds, and (ii) a set of time intervals, wherein each minimum power threshold in the set of minimum power thresholds is associated with a time interval in the set of time intervals;
responsive to receiving the power option data, determine a performance strategy for the set of computing systems based on a combination of at least a portion of the power option data and at least one condition from the set of conditions, wherein the performance strategy comprises a power consumption target for the set of computing systems for each time interval in the set of time intervals, wherein each power consumption target is equal to or greater than the minimum power threshold associated with each time interval; and
provide instructions to the set of computing systems to perform one or more computational operations based on the performance strategy.

US Pat. No. 11,031,782

PHOTOVOLTAIC TRANSFER SWITCH WITH NON-ESSENTIAL LOAD CUTOFF

1. A power management system for managing a plurality of essential loads and a plurality of nonessential loads that can be fed electric power from an alternate power source and from a grid power source, a power distribution network configured to receive power from an inverter that receives power from the alternate power source, wherein the grid power source includes a first grid power line and a second grid power line that is 180° out of phase with the first grid power line and wherein the inverter delivers power on a first inverter power line and a second inverter power line that is 180° out of phase with the first power line, the power management system comprising:(a) power distribution network for transmitting power from the alternate power source and the grid power source to the essential loads and to the nonessential loads;
(b) a grid power sensor that senses a grid power failure;
(c) a wireless transmitter that is coupled to the grid power sensor that transmits a decouple signal when the grid power sensor detects a grid power failure; and
(d) a plurality couplers that selectively couple the nonessential loads to the power distribution network, each of the plurality of couplers including a wireless receiver and a switch that responsive to the wireless receiver and that decouples one of the nonessential loads from the power distribution network when the decouple signal is received;
(e) a first node, configured to be coupled to the load;
(f) a grid relay that couples the grid power source to the first node when in a closed state and that decouples the grid power source from the first node when in an open state, the grid relay including:
(i) a housing;
(ii) a first grid contact in a fixed relationship with the housing and a second grid contact in a fixed relationship with the housing;
(iii) a first load contact in a fixed relationship with the housing and a second load contact in a fixed relationship with the housing;
(iv) a first moving contact in a movable relationship with the housing and movable between contacting both the first grid contact and the first bad contact, thereby electrically coupling the first grid contact to the first bad contact, and not contacting at least one of the first grid contact and the first bad contact, thereby electrically decoupling the first grid contact from the first load contact, and a second moving contact in a movable relationship with the housing and movable between contacting both the second grid contact and the second load contact, thereby electrically coupling the second grid contact to the second load contact, and not contacting at least one of the second grid contact and the second load contact, thereby electrically decoupling the second grid contact from the second load contact; and
(v) a state mechanism that forces the first moving contact to electrically couple the first grid contact to the first load contact and simultaneously forces the second moving contact to electrically couple the second grid contact to the second load contact thereby driving the grid relay into the closed state and that forces the first moving contact to electrically decouple couple the first grid contact from the first load contact and simultaneously forces the second moving contact to electrically decouple the second grid contact to the second bad contact thereby driving the grid relay into the open state;
(g) an inverter relay that couples the inverter to the first node when in a closed state and that decouples the inverter from the first node when in an open state; and
(h) a controller that is responsive to the grid power sensor and that is programmed to:
(i) cause the grid relay to be in the closed state and cause the inverter relay to be in the closed state when the grid power sensor indicates power is available from the grid;
(ii) cause the grid relay to be in the open state when the grid power sensor indicates that power is not available from the grid; and
(iii) cause the inverter relay to be in the open state when the grid power sensor indicates power is not available from the grid and when feedback from the grid relay indicates that the grid relay is in the closed state.

US Pat. No. 11,031,781

METHOD FOR IMPLEMENTING POWER DELIVERY TRANSACTION FOR POTENTIAL ELECTRICAL OUTPUT OF INTEGRATED RENEWABLE ENERGY SOURCE AND ENERGY STORAGE SYSTEM FACILITY

8me Nova, LLC, El Dorado...

1. A method for implementing a power delivery transaction between a buyer and seller for potential electrical energy output of an integrated renewable energy source and energy storage system (RES-ESS) facility that includes a renewable energy source (RES) and an energy storage system (ESS), the method comprising:periodically estimating total potential electrical energy output of the RES during at least one retrospective time window utilizing a signal indicative of one or more sensed parameters;
comparing the estimated total potential electrical energy output of the RES to a point of grid interconnect (POGI) limit for the RES-ESS facility to identify potential RES overgeneration during the at least one retrospective time window, wherein potential RES overgeneration equals potential RES electrical energy output in excess of the POGI limit during the at least one retrospective time window;
identifying an amount of charged potential RES overgeneration, calculated as potential RES overgeneration charged to the ESS during the at least one retrospective time window; and
charging the buyer for undelivered electrical energy if charged potential RES overgeneration is less than potential RES overgeneration during one or more time windows of the at least one retrospective time window.

US Pat. No. 11,031,780

ELECTRIC POWER SUPPLYING DEVICE

TOYOTA JIDOSHA KABUSHIKI ...

1. An electric power supplying device comprising:a first sensing section that senses a first output current from a first DCDC converter provided between a high-voltage system and an auxiliary device system;
a second sensing section that senses a second output current from a second DCDC converter provided between the high-voltage system and the auxiliary device system;
a third sensing section that senses a third output current from an auxiliary device battery connected to the auxiliary device system; and
a control section that controls output of the second DCDC converter on the basis of results of sensing of output currents by the first sensing section, the second sensing section and the third sensing section.

US Pat. No. 11,031,779

MEMORY SYSTEM WITH A RANDOM BIT BLOCK

eMemory Technology Inc., ...

1. A memory system comprising:a non-volatile memory block comprising a plurality of non-volatile memory cells configured to store a plurality of bits of data, each of the plurality of non-volatile memory cells comprising a first storage transistor;
a random bit block comprising a plurality of random bit cells configured to provide a plurality of random bits, each of the plurality of random bit cells comprising a second storage transistor and a third storage transistor; and
at least one sense amplifier coupled to the non-volatile memory block and the random bit block, and configured to sense a first read current of a non-volatile memory cell of the plurality of non-volatile memory cells during a read operation of the non-volatile memory cell and sense at least a second read current of a random bit cell of the plurality of random bit cells during a read operation of the random bit cell;
wherein the first storage transistor, the second storage transistor, and the third storage transistor are storage transistors of a same type.

US Pat. No. 11,031,778

HIGH-VOLTAGE TOLERANT BI-DIRECTIONAL ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT

Silicon Laboratories Inc....

1. An integrated circuit package comprising:a first semiconductor die comprising:
a signal pad;
a first diode having a first terminal coupled to the signal pad and a second terminal, the first diode having a first polarity;
a second diode having a second terminal coupled to the signal pad and a first terminal, the second diode having a second polarity;
a first insulated gate bipolar transistor (IGBT) having a first polarity, the first IGBT coupled between the second terminal of the first diode and a reference voltage node;
a second IGBT having the first polarity, the second IGBT coupled between the first terminal of the second diode and the reference voltage node; and
an output buffer coupled to the signal pad; and
a second semiconductor die coupled to the first semiconductor die, the second semiconductor die to communicate sensing information via the output buffer.

US Pat. No. 11,031,777

CLAMPING OPERATION AND APPARATUS FOR SURGE PROTECTION

SAMSUNG ELECTRONICS CO., ...

1. An electronic apparatus, comprising:a main circuit unit;
a power source supplier configured to generate power, and supply the generated power to the main circuit unit;
a surge protector disposed between the main circuit unit and the power source supplier, the surge protector being configured to, based on a surge occurring within the power source supplier, perform a first clamping operation on a power output from the power source supplier at a first voltage level or lower,
an overvoltage protection circuit unit coupled to the main circuit unit, wherein the overvoltage protection circuit unit comprises a capacitor, and wherein the overvoltage protection circuit unit is configured to, based on an output voltage level of the main circuit unit charging the capacitor to a value equal to or greater than a third voltage level, stop the first clamping operation, and
wherein the power source supplier is further configured to, based on the first clamping operation being stopped, perform a second clamping operation within the power source supplier at a second voltage level greater than the first voltage level.

US Pat. No. 11,031,776

OVERVOLTAGE PROTECTION DEVICE AND A METHOD FOR OPERATING AN OVERVOLTAGE PROTECTION DEVICE

NXP B.V., Eindhoven (NL)...

1. An overvoltage protection device, the overvoltage protection device comprising:a switch circuit connected between an input terminal from which an input voltage is received and an output terminal from which an output voltage is output, wherein the switch circuit comprises:
a plurality of NMOS transistors connected in series between the input terminal and the output terminal; and
a plurality of PMOS transistors connected in series between the input terminal and the output terminal;
a first voltage generation circuit configured to, generate a first voltage that is applied to the NMOS transistors and a second voltage that is applied to a body of each of the PMOS transistors, in response to the input voltage and a supply voltage; and
a second voltage generation circuit configured to generate a third voltage that is applied to the PMOS transistors in response to the input voltage and the first voltage;
wherein the first voltage generation circuit comprises:
a first voltage selector connected to the supply voltage, wherein the first voltage selector is configured to generate the first voltage that is applied to a gate terminal of each of the NMOS transistors;
a voltage divider connected to the input terminal and to a fixed voltage; and
a second voltage selector connected to the input terminal and to the supply voltage, wherein the second voltage selector is configured to generate the second voltage; and
wherein the second voltage selector is configured to select a highest voltage of the input voltage and the supply voltage as the second voltage.

US Pat. No. 11,031,775

DC ELECTRONIC SWITCH WITH TEMPERATURE INDEPENDENT CURRENT LIMIT

ENLIGHTEN LUMINAIRES LLC,...

1. A direct current voltage power control circuit comprising:input terminals;
output terminals;
a semi-conductor switch electrically connected between said input terminals and said output terminals;
a current limiting circuit controlling said semiconductor switch, said current limiting circuit operable to limit current delivered from said input terminals to said output terminals at a maximum predetermined value; and
a timing circuit receiving current flow after output current is at or above a pre-defined threshold causing a capacitor in said timing circuit to be charged to a pre-defined voltage;
wherein said current limiting circuit is operated to deliver said maximum predetermined value of current to said output terminals by a MOSFET when said MOSFET is substantially or fully at a gate voltage threshold thereof; andwherein during a time when said input current remains at or above said pre-determined threshold, said capacitor is charged from an amplifier.

US Pat. No. 11,031,774

SUPERCONDUCTING FAULT CURRENT LIMITER HAVING IMPROVED ENERGY HANDLING

Varian Semiconductor Equi...

1. A superconducting fault current limiter element, comprising:a plurality of tapes, arranged in electrical parallel fashion among one another, wherein at least one tape of the plurality of tapes comprises a superconductor tape, and wherein at least one tape of the plurality of tapes comprises a non-superconductor tape, and wherein the superconductor tape and the non-superconductor tape are not disposed in contact with one another.

US Pat. No. 11,031,773

TRANSFORMER ISOLATION RESPONSE USING DIRECT CURRENT LINK

ABB Power Grids Switzerla...

1. An alternating current (AC) distribution system comprising:a first substation including a first transformer and a protective device, the first transformer being coupled to a transmission network;
a first distribution network portion coupled to the first transformer;
a second substation including a second transformer;
a second distribution network portion coupled to the second transformer structured to receive medium voltage alternating current (MVAC) from the second transformer;
a DC interconnection system coupled between the first distribution network portion and the second distribution network portion; and
a control system structured to detect a fault in the first transformer or the transmission network, isolate the first distribution network portion from the fault using the protective device, determine a set point of the DC interconnection system after isolating the first distribution network portion, and operate the DC interconnection system using the set point so as to transfer a portion of the MVAC from the second distribution network portion to the first distribution network portion.

US Pat. No. 11,031,772

PROTECTION EARTH CONNECTION DETECTOR

1. A device for detecting and/or monitoring a protective earth connection in a mains electricity outlet comprising:an electrical current conducting unit between a line wire and/or a neutral wire and a protective earth wire of the mains electricity outlet allowing the flow of a detection current between the line wire and/or neutral wire and the protective earth wire, wherein the electrical current conducting unit is configured to limit the detection current to less than 0.75 mA,
wherein the device is configured for measuring the detection current and comparing the detection current with a preselected reference current, and wherein the device further comprises a switch or relay configured to establish a connection from the mains electricity outlet to an electrical appliance when the measured detection current is larger than the reference current.

US Pat. No. 11,031,771

POWER SUPPLY CONTROL APPARATUS

AutoNetworks Technologies...

1. A power supply control apparatus for controlling power supply via a semiconductor switch comprising:a resistance whose one end is connected to a current input terminal of the semiconductor switch;
a current circuit that is connected to the other end of the resistance and configured to pull in, via the resistance, a current whose current value fluctuates, depending on an ambient temperature of the semiconductor switch, in the same direction as a fluctuation direction of an ON resistance value of the semiconductor switch;
a switching unit configured to turn OFF the semiconductor switch if a voltage at a current output terminal of the semiconductor switch is lower than a voltage at the other end of the resistance;
a transistor that has a first terminal connected to the other end of the resistance, a second terminal to which a constant voltage is applied, and a third terminal, a resistance value of the transistor between the first terminal and the third terminal being adjusted such that the voltage between the second terminal and the third terminal is a predetermined voltage; and
a resistor whose one end is connected to the third terminal of the transistor and whose resistance value fluctuates in a direction opposite to the fluctuation direction depending on the ambient temperature.

US Pat. No. 11,031,770

ELECTRIC WORKING MACHINE AND VOLTAGE SUPPRESSOR CIRCUIT FOR ELECTRIC WORKING MACHINE

MAKITA CORPORATION, Anjo...

1. An electric working machine comprising:a main current path arranged between a positive electrode and a negative electrode of a battery;
a driving unit situated in the main current path, the driving unit including a motor situated in the main current path, and at least one first semiconductor switching element situated upstream and/or downstream of the motor in the main current path;
a controller configured to turn ON or OFF the at least one first semiconductor switching element to thereby control drive of the motor;
a bypass current path arranged in parallel with the driving unit;
a second semiconductor switching element situated in the bypass current path and configured to complete or interrupt the bypass current path; and
a switch driver configured to cause the second semiconductor switching element to interrupt the bypass current path in response to a voltage value of a drive voltage being less than a threshold value, the switch driver further configured to cause the second semiconductor switching element to complete the bypass current path in response to the voltage value being equal to or greater than the threshold value, and the drive voltage being applied to the driving unit,
the switch driver being configured to, while the voltage value is equal to or greater than the threshold value, operate the second semiconductor switching element so as to be operated longer in an active region than in a saturation region to thereby complete the bypass current path.

US Pat. No. 11,031,769

TWO-TRANSISTOR DEVICES FOR PROTECTING CIRCUITS FROM SUSTAINED OVERCURRENT

Symptote Technologies, LL...

1. A device for protecting a circuit having a primary current path from a sustained overcurrent condition, comprising:a first terminal and a second terminal;
a first transistor comprising a first gate, a first drain, and a first source, wherein the first transistor is an n-channel, depletion mode, normally-on transistor;
a second transistor comprising a second gate, a second drain, and a second source,
wherein the second transistor is a p-channel, depletion mode, normally-on transistor; and
gate drive circuitry configured to bias the first gate and the second gate;
wherein the first transistor and the second transistor are arranged in series in the primary current path between the first terminal and the second terminal;
wherein the first transistor and the second transistor are similarly aligned;
a rectifying component in series electrical communication with the first terminal and the second terminal, and in parallel electrical communication with the first transistor and the second transistor, the rectifying component being configured to present a fixed polarity voltage;
wherein, when a first positive voltage and a normal current condition exist from the first terminal to the second terminal,
the first transistor is configured to operate substantially in enhancement mode; and
the second transistor is configured to operate substantially in enhancement mode; and
wherein, when a second positive voltage and a sustained overcurrent condition exist from the first terminal to the second terminal,
the first transistor is configured to operate in blocking depletion mode; and
the second transistor is configured to operate in blocking depletion mode
and
wherein the device is configured to pass current during normal current conditions, and to substantially block current during sustained overcurrent conditions.

US Pat. No. 11,031,768

DEVICES INCLUDING TWO CURRENT MONITORS

Hewlett-Packard Developme...

1. A device comprising:a current sensor to sense a DC current between an input node and an output node;
a switch between the input node and the output node;
a first current monitor to disconnect the input node from the output node by opening the switch in response to the sensed DC current exceeding a first threshold current for a period exceeding a threshold period;
a second current monitor to disconnect the input node from the output node by opening the switch in response to the sensed DC current exceeding a second threshold current greater than the first threshold current;
a fuse in series with the switch and between the switch and the output node,
wherein the first current monitor and the second current monitor are to disconnect the input node from the output node by opening the switch to prevent the fuse from being blown; and
a set/reset latch comprising a set input coupled to the first current monitor and the second current monitor and an output directly coupled to a control input of the switch.

US Pat. No. 11,031,767

POWER RELAY SYSTEM WITH ARC FLASH INCIDENT ENERGY REDUCTION

1. A power relay system comprising:a circuit breaker configured, when triggered, to provide an open circuit in a power line configured to conduct a current between a power grid point-of-interconnect (POI) and a power generator system; and
a power controller configured to monitor the current and to generate a dynamic current threshold based on the current, the power controller being further configured to compare the current with the dynamic current threshold and to trigger the circuit breaker based on a difference of the current relative to the dynamic current threshold to set an arc flash incident energy level of the power generator system at or below a predetermined safety level.

US Pat. No. 11,031,766

CABLE ACCESSORY WITH IMPROVED THERMAL CONDUCTIVITY

NEXANS, Courbevoie (FR)

11. Electrical device comprising:at least one electric cable, and
an accessory surrounding at least one part or end of said electric cable,wherein the accessory is surrounded by at least one electrically insulating crosslinked layer comprising at least one polymer material, at least one first filler having a thermal conductivity CT1 (in W·m?1·K?1) at 35° C., and at least one second filler having a thermal conductivity CT2 (in W·m?1·K?1) at 35° C. such that CT2?CT1+40 W·m?1·K?1, andwherein the first filler and the second filler are in the form of micrometric particles,wherein the first filler is in the form of elongated particles, and
wherein the second filler is in the form of spherical particles.

US Pat. No. 11,031,765

GAS-INSULATED ELECTRIC APPARATUS AND MANUFACTURING METHOD OF GAS-INSULATED ELECTRIC APPARATUS

MITSUBISHI ELECTRIC CORPO...

1. A gas-insulated electric apparatus, comprising:a sealed container made of metal;
a high-voltage conductor, housed within the sealed container, to receive voltage;
an insulating support member to insulate the high-voltage conductor from the sealed container and support the high-voltage conductor to the sealed container; and
a nonlinear-resistance film covering at least a portion of an inner surface of the sealed container, the portion being on a lower side of the inner surface with respect to the high-voltage conductor,
wherein the nonlinear-resistance film is formed by particles of a nonlinear-resistance material and an insulating material, the particles of the nonlinear-resistance material being dispersed in the insulating material, and
the particles of the nonlinear-resistance material are placed in the insulating material such that a spacing between neighboring particles of the nonlinear-resistance material is smaller than a size of a conductive foreign object so that one or more of the particles of the nonlinear-resistance material is in constant contact with the conductive foreign object trapped inside the sealed container.

US Pat. No. 11,031,764

WIRE UNIT

Sumitomo Wiring Systems, ...

1. A wire unit, comprising:multiple electrical wires;
a plate including a support surface that supports the electrical wires;
a retaining member including a flat pressing surface disposed parallel to the support surface, wherein the retaining member arranges the electrical wires in a single row and retains the electrical wires between the pressing surface and the support surface, and
a protection tube that covers the electrical wires; wherein
the retaining member is formed from metal and has a rectangular cross section,
the retaining member includes a pressing piece and two retaining pieces,
the pressing piece extends in a direction which the electrical wires are arranged and includes the pressing surface,
the retaining pieces project to oppose to each other from opposite ends of the pressing piece,
each of the retaining pieces is directed toward a rear surface of the plate opposite to the support surface,
a portion of each of the retaining pieces projecting from the rear surface is bent and swaged along the rear surface, and
the protection tube is held between the retaining member and the electrical wires.

US Pat. No. 11,031,763

NANOWIRE BASED ELECTRICAL CONTACT SYSTEM

Budderfly, Inc., Shelton...

1. An electrical power distribution system adapted to be applied to a wall, a ceiling or a floor, the system comprising:a power source adapted to provide a Direct Current (DC) output to a device that is adapted to receive DC power from said power source;
a plug extending from a face of the power source and configured to connect to an electrical outlet;
a first conductive current path extending from a first connection area near said power source to a second connection area near the device, said first conductive current path comprising a liquid nanowire material directly applied upon a surface of the wall, the ceiling or the floor and combinations thereof such that the liquid nanowire material dries or cures directly on the surface;
a second conductive current path extending from the first connection area to the second connection area, said second conductive current path comprising a liquid nanowire material directly applied upon the surface such that the liquid nanowire material dries or cures directly on the surface;
the plug comprising a plurality of contact elements spaced apart and one of the plurality of contact elements configured to make electrical contact with the first conductive current path and another of the plurality of contacts configured to make electrical contact with the second conductive current path;
said first and second conductive current paths maintained physically apart from each other; and
said power source adapted to be connected to said first connection area and said device adapted to be connected to said second connection area such that DC power is supplied to said device via said first and second conductive current paths.

US Pat. No. 11,031,762

CIRCUIT ASSEMBLY

AutoNetworks Technologies...

1. A circuit assembly comprising:a first conductive portion that is plate-shaped and elongated in one direction;
a second conductive portion that is plate-shaped, having a first portion that is elongated along a lengthwise direction of the first conductive portion, and is arranged to be separated from the first conductive portion by a predetermined distance, and a second portion orthogonal to the first portion; and
a plurality of switching elements that are arranged straddling the first conductive portion and the second conductive portion, and are lined up in the lengthwise direction, wherein
a cut out portion is provided between a first end portion of the first conductive portion and the second portion of the second conductive portion, and
the plurality of switching elements are lined up between the cut out portion and a second end portion of the first conductive portion, the second end portion opposite of the first end portion.

US Pat. No. 11,031,761

RESIN STRUCTURE

YAZAKI CORPORATION, Toky...

1. A resin structure comprising:a first resin body having an annular first side portion;
a second resin body having a second side wall portion; and
a third resin both having a bottom wall portion and an annular third side wall portion connected to the bottom wall portion,
wherein the second resin body is assembled to the first resin body, such that ail upper edge of the second side wall portion and at least a portion of an annular lower edge of the first side wall portion in a circumferential direction are aligned,
wherein the third resin body is assembled to the second resin body, such that an annular upper edge of the third side wall portion and at least a lower edge of the second side wall portion are aligned, and
wherein the third resin body includes a prevention mechanism that prevents flow of water entering an internal space defined by the bottom wall portion and the third side wall portion via a gap between the annular lower edge of the first side wall portion and the upper edge of the second side wall portion or a gap between the lower edge of the second side wall portion and the annular upper edge of the third side wall portion.

US Pat. No. 11,031,760

OPTICALLY LINKED PLUG-IN IOT AND AI FOR INTELLIGENT AUTOMATION

ELBEX VIDEO LTD., Tokyo ...

1. A plug-in device comprising at least one of artificial intelligence (Ai) and internet of things (IoT) circuits including at least one optical access, accessed through one of said plug-in device rear, said plug-in device internal and combinations thereof, at least one indicator and at least one of control and operate element selected from a group comprising a push switch, a push key, a push bar, a touch key, a touch pad, a touch icon, a touch screen, a touch display screen, a touch panel, a temperature sensor, a humidity sensor, an illumination sensor, sun light sensor, a display screen, at least one microphone, at least one speaker, at least one camera and combinations thereof, said plug-in device is at least single gang device enclosing at least two plug-in terminals for one of connecting alternating current (AC) to a direct current (DC) power supply included in said plug-in device to power said circuits and by connecting one of DC power line and a bus line with DC feed;wherein at least one front optical access is accessed through one of a front surface and a protruding structure of an intelligent support box (ISB) for linking at least one way of two way optical signal via said at least one of the front surface and the protruding structure by engaging a rear surface of said plug-in device with the front surface of said ISB, and positioning at least one pair of said front surface access with a rear surface access and a protruding structure access with a plug-in device internal access into closed proximity; and
wherein control and operate particulars are selectively assigned to one of each plug-in device and the device load via at least one of a rotary setting selector and loaded to a memory included in said circuits via one of hand held loader and via a cascading optical grid linking at least one said ISB.

US Pat. No. 11,031,759

HIGH JACK SUPPORT ASSEMBLY

The Bowers Group, LLC, D...

1. A high jack support assembly, comprising:a hollow elongated conduit having a straight portion that extends between a first end to a curved portion, and the curved portion extends between the straight portion and a second end;
an electrical cord extending into the first end and through the hollow elongated conduit to the second end;
a wire bladder at the first end;
at least one electrical connector connected to the second end of the hollow elongated conduit and the second end of the electrical cord; and
at least one connecting member attached to the hollow elongated conduit.

US Pat. No. 11,031,758

METHOD TO RECLAIM METAL FROM INSULATED AND/OR SHIELDED AND/OR JACKETED POWER CABLES USING WATERJETTING

1. A method of reclaiming metal from power cables comprising the steps of:a) providing a sequence of at least first and second cable conveyor belt supports, each having a supporting surface and each having an entry and an exit end, said exit end of the first of said at least two cable supports being separated from the entry end of the second, so that a gap region exists therebetween;such that in use said power cable can be caused to move over said gap region;providing at least one power cable comprised of:
a central metal core;
an inner sheath which is firmly affixed to said central metal core; and
an outer sheath which is loosely affixed to said inner sheath;
said power cable optionally comprising metal shielding in said outer sheath, and/or between said inner and outer sheaths; and
providing at least one waterjet nozzle positioned in said gap between said exit and entry ends of said sequentially oriented at least first and second cable conveyor belt supports so that in use said at least one waterjet nozzle can be made to eject at least one waterjet into said gap region;said method continuing with:b) placing said at least one power cable on said supporting surface of said first cable conveyor belt support, such that a portion thereof is atop said first cable conveyor belt support, and a leading portion thereof extends into said gap region, and optionally extends onto the supporting surface of the second cable conveyor belt support;
c) causing said at least one waterjet nozzle to eject at least one waterjet that impinges on said portion of said at least one power cable that is in the gap region;
d) causing said at least one power cable to move so that the leading end thereof projects onto, or further onto the supporting surface of the second cable conveyor belt support while causing said at least one waterjet nozzle to eject water that impinges on said portion of said at least one power cable that is in the gap region, to the end that inner and outer sheathing is removed from the central metal core; and
e) continuing step d) until a majority of said at least one power cable has had the inner and outer sheathing removed therefrom.

US Pat. No. 11,031,757

SUBMARINE CABLE ROUTE PLANNING TOOL

Google LLC, Mountain Vie...

1. A method, comprising:receiving, by one or more processors, bathymetry data;
receiving, by the one or more processors, existing route data for a plurality of existing underwater cable routes; and
generating, based on the bathymetry data and the existing route data, a model for determining underwater cable routes, wherein the model is generated by using the bathymetry data and existing route data as training inputs.

US Pat. No. 11,031,756

FOUNDATION INTERFACE DEVICE

Balmoral Comtec Limited, ...

1. A foundation interface device comprising:an elongated, essentially cylindrical pull-in member arranged to be connected at its trailing end to a conduit in which is arranged a cable,
a slidable sleeve longitudinally movable in relation to a portion of the pull-in member,
one or more laterally extendable and retractable teeth connected to the slidable sleeve by a linkage whereby longitudinal movement of the sleeve is translated into a rotational movement of the teeth about an axis, said rotational movement extending and retracting the teeth in a lateral direction with respect to the pull-in member,
said pull-in member arranged to be pulled into an opening in a subsea foundation in a forward direction, wherein the slidable sleeve comprises an abutment portion larger than the opening and arranged to abut an outer wall of the foundation thereby preventing the pull-in member from being pulled into the foundation beyond the abutment portion, and wherein the teeth, when in an extended position, are arranged to abut an inner wall of the foundation thereby preventing removal of the pull-in member in a rearward direction beyond the teeth, and wherein the teeth, when in a retracted position caused by the longitudinal movement of the sleeve, permit removal of the pull-in member from the opening in the rearward direction.

US Pat. No. 11,031,755

AUTOMATED SHOTGUN STICK FOR CLAMPING GROUNDING DEVICES ON OVERHEAD LINES

Honeywell International I...

1. A shotgun stick for use with grounding devices, the shotgun stick comprising:a housing, wherein the housing defines a first end and a second end opposite the first end;
a drive shaft supported within the housing;
a torque connector coupled with a first end of the drive shaft, wherein the torque connector is configured to receive a grounding clamp assembly attached thereto, wherein the grounding clamp assembly is configured to receive an electrical conductor therein;
a motor assembly operably connected to a second end of the drive shaft, wherein, in an automatic mode, the motor assembly is configured to drive the drive shaft so as to actuate the grounding clamp assembly received by the torque connector; and
a manual locking mechanism, wherein, in a manual mode, the manual locking assembly is configured to lock the drive shaft to at least a portion of the housing so as to preclude rotation of the drive shaft and allow manual actuation of the grounding clamp assembly received by the torque connector.

US Pat. No. 11,031,754

MOTOR CONTROL CENTER UNITS WITH RETRACTABLE STABS AND INTERLOCKS

Eaton Intelligent Power L...

17. A bucket for a motor control center, comprising:a retractable power stab assembly held at least partially in the bucket, wherein the retractable power stab assembly is configured to selectively extend and retract power stabs thereof relative to a rear of the bucket;
a first handle assembly coupled to the bucket comprising a first handle that is movable between first and second positions of the first handle;
a second handle assembly coupled to the bucket comprising a second handle that is movable between first and second positions of the second handle, wherein the second handle assembly is laterally spaced apart from the first handle assembly; and
a shutter assembly comprising a shutter that is movable between a blocked position where access to the retractable power stab assembly is blocked and an unblocked position where access to the retractable power stab assembly is permitted, wherein the shutter assembly is coupled to the first and second handle assemblies and is configured to move the shutter to the unblocked position only when the first handle and the second handle are in the first position of the first and second handles and move the shutter to the blocked position when the first handle is moved to the second position of the first handle or the second handle is moved to the second position of the second handle.

US Pat. No. 11,031,753

EXTRACTING THE FUNDAMENTAL MODE IN BROAD AREA QUANTUM CASCADE LASERS

The Government of the Uni...

1. A broad area quantum cascade laser, comprising:an optical cavity defined by a top and two sidewalls;
the optical cavity including an active region for producing photons when an electric current is applied thereto, and being subject to a presence of at least one high order transverse optical mode when producing photons;
a layer of an optically low-loss material being in contact with each of the two sidewalls and also the active region;
a first layer of an optically lossy material being in contact with a first portion of each of the two sidewalls; and
the first portion extending from the top to a location short of adjacency to the active region.

US Pat. No. 11,031,752

SURFACE-EMITTING LASER AND ELECTRONIC APPARATUS

Sony Corporation, Tokyo ...

1. A surface-emitting laser comprising:a laminate having an active layer, and a first semiconductor layer and a second semiconductor layer having the active layer interposed therebetween;
a current constriction region being formed by impurities and having an opening, the impurities being injected from side of the second semiconductor layer into the laminate;
a first distributed Bragg reflector (DBR) layer on side of the first semiconductor layer and a second DBR layer on side of the second semiconductor layer, the first DBR layer and the second DBR layer having the laminate interposed therebetween at a position facing the opening,
wherein at the opening, an opening diameter close to the first DBR layer is larger than an opening diameter close to the second DBR layer; and
an optically transparent electrode that is in contact with an outermost surface on the side of the second DBR layer of the laminate,
wherein the optically transparent electrode is in contact with an entire region facing at least the second DBR layer of the outermost surface,
wherein the opening diameter of the opening increases intermittently from the side of the second DBR layer toward the side of the first DBR layer, and
wherein the current constriction region has a configuration selected from the group consisting of
(i) the current constriction region includes a first impurity region and a second impurity region, the first impurity region and the second impurity region being concentrically annular-shaped and differing in depth and opening diameter from each other, a depth of the first impurity region is deeper than a depth of the second impurity region, and an opening diameter of the first impurity region is larger than an opening diameter of the second impurity region; and
(ii) the current constriction region is configured by a plurality of impurity regions, the plurality of impurity regions being concentrically annular-shaped and differing in depth and opening diameter from one another, and an opening diameter of the impurity region having a relatively deep depth is larger than an opening diameter of the impurity region having a relatively shallow depth.

US Pat. No. 11,031,751

LIGHT-EMITTING DEVICE

HAMAMATSU PHOTONICS K.K.,...

1. A light emitting device, comprising:a semiconductor light emitting element having a light emitting surface and configured to output an optical image having an arbitrary shape along a normal direction of the light emitting surface and an inclined direction having a predetermined inclination and a spread angle with respect to the normal direction; and
a light shielding member disposed such that an axis orthogonal to the light emitting surface at a position of the center of gravity of the light emitting surface crosses a part of the light shielding member,
wherein the semiconductor light emitting element includes an active layer, a pair of cladding layers sandwiching the active layer, and a phase modulation layer provided between the active layer and one of a pair of the cladding layers and being optically coupled to the active layer,
the light shielding member is disposed so as to pass through a specific optical image output in the inclined direction among the optical images and shield zero order light output in a normal direction of the light emitting surface,
the phase modulation layer has a basic layer and a plurality of modified refractive index regions each having a refractive index different from a refractive index of the basic layer, and
the phase modulation layer is configured such that:
where, in an XYZ orthogonal coordinate system defined by a Z axis coinciding with the normal direction and an X-Y plane including X and Y axes which are orthogonal to each other and coincide with one surface of the phase modulation layer including a plurality of the modified refractive index regions, a virtual square lattice constituted by M1 (an integer of 1 or more)×N1 (an integer of 1 or more) unit constituent regions R each having a square shape is set on the X-Y plane,
in the unit constituent region R (x, y) on the X-Y plane specified by a coordinate component x (an integer of from 1 to M1) in the X axis direction and a coordinate component y (an integer of from 1 to N1) in the Y axis direction, a center of gravity G1 of the modified refractive index region located in the unit constituent region R (x, y) is away from a lattice point O (x, y) which is the center of the unit constituent region R (x, y), and a vector from the lattice point O (x, y) to the center of gravity G1 is oriented in a specific direction,
wherein in a state of satisfying the following first to sixth conditions:
the first condition defined that coordinates (x, y, z) in the XYZ orthogonal coordinate system satisfies a relationship represented by the following formulas (1) to (3) with respect to a spherical coordinates (d1, ?tilt, ?rot) defined by a length d1 of a moving radius, an inclination angle ?tilt from the Z axis, and a rotation angle ?rot from the X axis specified on the X-Y plane:
x=d1 sin ?tilt cos ?rot  (1)
y=d1 sin ?tilt sin ?rot  (2)
z=d1 cos ?tilt  (3),
the second condition defined that letting a beam pattern corresponding to the optical image output from the semiconductor light emitting element is a set of bright points directed in directions defined by the angles ?tilt and ?rot, the angles ?tilt and ?rot are converted into a coordinate value kx on a Kx axis corresponding to the X axis which is a normalized wave number defined by the following formula (4) and a coordinate value ky on a Ky axis, which is a specific wavenumber defined by the following formula (5), corresponds to the Y axis, and is orthogonal to the Kx axis:
a: Lattice constant of vertical square lattice?: Oscillation wavelength of semiconductor light emitting element,the third condition defined that a specific wavenumber range including the beam pattern includes M2 (an integer of 1 or more)×N2 (an integer of 1 or more) image regions FR each having a square shape in a wavenumber space defined by the Kx axis and the Ky axis,
the fourth condition defined that, in the wavenumber space, a complex amplitude F (x, y) obtained by performing two-dimensional inverse Fourier transform to transform each of image regions FR (kx, ky) specified by a coordinate component kx (an integer of from 0 to M2?1) in the Kx axis direction and a coordinate component ky (an integer of from 0 to N2?1) in the Ky axis direction to the unit constituent region R (x,y) on the X-Y plane is expressed by the following formula (6) with j being an imaginary unit:

the fifth condition defined that the complex amplitude F (x, y) is defined by the following formula (7) while an amplitude term is denoted by A (x, y) and a phase term is denoted by P (x, y) in the unit constituent region R (x, y):
F(x,y)=A(x,y)×exp[jP(x,y)]  (7), and
the sixth condition defined that the unit constituent region R (x, y) is defined by an s-axis and a t-axis which are parallel to the X-axis and the Y-axis and orthogonal at the lattice point O (x, y),
the phase modulation layer is configured such that:
in a state in which a line segment length r (x, y) from the lattice point O (x, y) to the center of gravity G1 of the corresponding modified refractive index region is set to a common value in each of the M1×N1 unit constituent regions R, an angle ? (x, y) formed by a line segment connecting the lattice point O (x, y) and the center of gravity G1 of the corresponding modified refractive index region and the s axis satisfies a relationship expressed by the following formula:
?(x,y)=C×P(x,y)+B
C: proportional constant
B: arbitrary constant,
and the corresponding modified refractive index region is disposed in the unit constituent region R (x, y).

US Pat. No. 11,031,750

LIGHT SOURCE DEVICE

NICHIA CORPORATION, Anan...

1. A light source device comprising:a plurality of laser sources, each configured to emit a light beam having a peak wavelength in a range of 350 nm to 550 nm with a predetermined gain bandwidth;
a plurality of collimating parts, each configured to collimate the light beam emitted from a corresponding one of the laser sources;
a combining grating configured to diffract, at an identical diffraction angle, light beams that have passed through the collimating parts and are incident on the combining grating at different incident angles, to combine the diffracted light beams; and
a plurality of plane transmission gratings, wherein each of the plane transmission gratings is disposed in an optical path between a corresponding one of the collimating parts and the combining grating, wherein each of the plane transmission gratings is adjustable so as to allow selection of a wavelength of the light beam incident on the combining grating, and wherein each of the plane transmission gratings is configured to diffract a portion of the light beam emitted from a corresponding one of the laser sources back to the corresponding one of the laser sources, to cause external resonance between the corresponding one of the laser sources and each of the plane transmission gratings.

US Pat. No. 11,031,749

LASER CONTROL

Microsoft Technology Lice...

1. A method comprising:generating a laser beam using a laser;
sensing a temperature of a physical element of the laser;
predicting a laser emitter temperature based at least on the sensed temperature of the physical element of the laser using a laser emitter temperature prediction model that models thermal impedance of the laser;
receiving a desired optical power for the laser; and
computing a compensated electrical current for driving the laser based at least on the predicted laser emitter temperature; and
generating a laser beam having an actual optical power that matches the desired optical power, utilizing the compensated electrical current.

US Pat. No. 11,031,748

ILLUMINATION DEVICE, CONTROL DEVICE, AND CONTROL METHOD

SONY CORPORATION, Tokyo ...

1. An illumination device, comprising:a plurality of light sources configured to emit light;
a plurality of cooling units that corresponds to the plurality of light sources, wherein each cooling unit of the plurality of cooling units is configured to cool a respective light source of the plurality of light sources;
a plurality of light detection units corresponding to the plurality of light sources, wherein each light detection unit of the plurality of light detection units is configured to detect an amount of light emitted from the respective light source of the plurality of light sources; and
a drive control unit configured to control drive of each light source of the plurality of light sources such that the amount of light emitted from each light source of the plurality of light sources is constant, in a case where a measured temperature of each light source of the plurality of light sources and a measured temperature of an environment is lower than a target temperature of the respective light source of the plurality of light sources, wherein
the control of the drive of each light source of the plurality of light sources is based on the amount of light detected by a corresponding light detection unit of the plurality of light detection units, and
in the case where the measured temperature of each light source of the plurality of light sources and the measured temperature of the environment is lower than the target temperature, the measured temperature of each light source of the plurality of light sources reaches the target temperature based on heat generation by the drive of the respective light source of the plurality of light sources.

US Pat. No. 11,031,747

LIGHT-EMITTING DEVICE

HAMAMATSU PHOTONICS K.K.,...

1. A light emitting device, comprising:a semiconductor light emitting element having a light emitting surface and configured to output an optical image having an arbitrary shape along a normal direction of the light emitting surface and an inclined direction having a predetermined inclination and a spread angle with respect to the normal direction; and
a light shielding member disposed such that an axis orthogonal to the light emitting surface at a position of the center of gravity of the light emitting surface crosses a part of the light shielding member,
wherein the semiconductor light emitting element includes an active layer, a pair of cladding layers sandwiching the active layer, and a phase modulation layer provided between the active layer and one of a pair of the cladding layers and being optically coupled to the active layer,
the light shielding member is disposed so as to pass through a specific optical image output in the inclined direction among the optical images and shield zero order light output in a normal direction of the light emitting surface,
the phase modulation layer has a basic layer and a plurality of modified refractive index regions each having a refractive index different from a refractive index of the basic layer, and
the phase modulation layer is configured such that:
where, in an XYZ orthogonal coordinate system defined by a Z axis coinciding with the normal direction and an X-Y plane including X and Y axes which are orthogonal to each other and coincide with one surface of the phase modulation layer including a plurality of the modified refractive index regions, a virtual square lattice constituted by M1 (integer of 1 or more)×N1 (integer of 1 or more) unit constituent regions R each having a square shape is set on the X-Y plane,
in the unit constituent region R (x, y) on the X-Y plane specified by a coordinate component x (integer of 1 or more and M1 or less) in the X axis direction and a coordinate component y (integer of 1 or more and N1 or less) in the Y axis direction, a center of gravity G1 of the modified refractive index region located in the unit constituent region R (x, y) is away from a lattice point O (x, y) which is the center of the unit constituent region R (x, y), and a vector from the lattice point O (x, y) to the center of gravity G1 is oriented in a specific direction.

US Pat. No. 11,031,746

SEMICONDUCTOR LASER MODULE

FURUKAWA ELECTRIC CO., LT...

1. A semiconductor laser module comprising:a semiconductor laser device that outputs laser light;
an optical fiber that includes a core portion and a cladding portion formed at an outer periphery of the core portion and that receives the laser light from one end and guides the laser light to the outside of the semiconductor laser module;
an optical part disposed at an outer periphery of the optical fiber, having optical transmittance at a wavelength of the laser light, and that fixes the optical fiber;
a first fixative that fixes the optical part and the optical fiber;
a housing that accommodates the semiconductor laser device and the one end of the optical fiber that receives the laser light; and
an optical reflection reducing region treated to absorb the laser light passing through the optical part and having a rough surface is formed on an inner surface of a fixing member disposed at an outer periphery around the optical part and fixing the optical part,
wherein the fixing member:
includes at least one of:
a metal member containing Cu, Ni, Al, stainless steel, or Fe;
a member having a surface plating layer including a metal containing Ni, Cr, or Ti or including C;
a ceramic member containing AlN, BeO, ZrO2, SiC, or Al2O3; and
a member having a ceramic layer covering a surface containing AlN, BeO, ZrO2, SiC, or Al2O3,
converts energy of the laser light absorbed by the the optical reflection reducing region into heat and radiates the heat, and
is connected to the housing with a good thermal conductor interposed therebetween.

US Pat. No. 11,031,745

STIMULATED X-RAY EMISSION SOURCE WITH CRYSTALLINE RESONANCE CAVITY

1. An X-ray laser comprising:a target anode of a crystalline material that emits X-ray radiation in response to excitation;
an X-ray source that provides an input X-ray beam having a wavelength A that is directed at a predetermined volume of the target anode at a predefined angle relative to a crystal lattice of the target anode so as to induce a Borrmann mode standing wave in the predetermined volume; and
an electron source that emits an electron beam that is incident on the predetermined volume so as to cause electron impact ionization of the crystalline material and thereby induce stimulated emission of a substantially coherent output X-ray beam.