US Pat. No. 9,392,733

DATA CENTER COOLING

SCHNEIDER ELECTRIC IT COR...

1. A data center system for housing and cooling rack-mounted electronic heat-producing equipment, the system comprising:
a cabinet configured to house the rack-mounted electronic heat-producing equipment, the cabinet including a divider wall defining
a first chamber and a second, separate, chamber within the cabinet, the first chamber being configured to house the electronic
equipment in an equipment rack, the first and second chambers being in fluid communication with each other and displaced horizontally
with respect to each other; and

cooling and circulating means, including a plurality of swappable vertically displaced adjustable variable-speed fans housed
in the second chamber, and an only single removable heat exchanger cartridge vertically extending along at least a portion
of a height defined by the plurality of swappable vertically displaced adjustable variable-speed fans, the only single removable
heat exchanger cartridge of the cooling and circulating means being separated from the plurality of swappable vertically displaced
adjustable variable-speed fans by a middle plenum vertically extending from a ceiling of the cabinet along at least the height
defined by the plurality of swappable vertically displaced adjustable variable-speed fans such that the only single removable
heat exchanger cartridge and each of the plurality of swappable vertically displaced adjustable variable-speed fans can be
independently replaced, the each of the plurality of swappable vertically displaced adjustable variable-speed fans configured
to be controlled to operate at a respective speed based, at least in part, on operation of others of the plurality of swappable
vertically displaced adjustable variable speed fans to pull or push air flow through the only single removable heat exchanger
cartridge of the cooling and circulating means to cause a substantially uniform top-to-bottom flow of a horizontally moving
curtain of air through the cabinet;

wherein the only single removable heat exchanger cartridge of the cooling and circulating means is configured to be removed
from the cabinet without removing any of the plurality of swappable vertically displaced adjustable variable-speed fans from
the cabinet and with all of the plurality of vertically displaced adjustable variable-speed fans housed in the second chamber,
separate from the first chamber housing the electronic equipment, running;

and wherein the cooling and circulating means is configured for drawing in heated gas from the first chamber to the second
chamber using the plurality of vertically displaced adjustable variable-speed fans, cooling using the only single removable
heat exchanger cartridge of the cooling and circulating means the drawn-in gas to produce cooled gas, and impelling the cooled
gas through a first passage in the divider wall from the second chamber horizontally into the first chamber to cause circulation
of the substantially uniform top-to-bottom flow of the horizontally moving curtain of air.

US Pat. No. 9,048,688

METHOD AND APPARATUS FOR PREVENTING OVERLOADS OF POWER DISTRIBUTION NETWORKS

SCHNEIDER ELECTRIC IT COR...

1. A system for monitoring and controlling a power distribution system that has a plurality of circuit branches for providing
power to a plurality of devices, the system comprising:
a control module configured to:
control a first device on a first circuit branch to increase power draw to operate at a predetermined percentage of maximum
power, wherein the predetermined percentage of maximum power is less than 100%;

detect a first value for a characteristic: of power provided to the first circuit branch using a first power monitoring device;
control a second device on a second circuit branch to increase power draw to operate at a predetermined percentage of maximum
power;

detect a second value for a characteristic of power provided to the second circuit branch using a second power monitoring
device;

add the first value to the second value to obtain a total value;
compare the total value to an overload value to detect an overload condition; and indicate
an alarm condition when the total value exceeds the overload value.

US Pat. No. 9,418,179

SYSTEM AND METHOD FOR PREDICTING TRANSIENT COOLING PERFORMANCE FOR DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for evaluating transient cooling performance of a data center, the method comprising:
receiving input data from a storage device, the input data including data center architecture information and operating data;
performing transient cooling performance calculations for the data center using the input data, the transient cooling performance
calculations including calculating at least one predicted temperature in the data center during a power outage of the data
center; and

displaying results of the transient cooling performance calculations in a data center management system, wherein the results
include at least one of a cooling runtime and a maximum predicted temperature of the data center following the power outage
of the data center.

US Pat. No. 9,312,201

HEAT DISSIPATION DEVICE

SCHNEIDER ELECTRIC IT COR...

1. A heat dissipation device for a heat-generating component, the heat dissipation device comprising:
a first sheet formed with spaced-apart grooves on a surface of the first sheet, the grooves being stretched diagonally from
one side of the first sheet to the other and containing one or more curvatures along the length of the grooves, the grooves
forming helically-shaped air channels, the first sheet integrally forming a first base plate secured to the heat-generating
component, a first helically-shaped air tube, and a first wall positioned between the first base plate and the first helically-shaped
air tube; and

a second sheet formed with spaced-apart grooves on a surface of the second sheet, the grooves being stretched diagonally from
one side of the second sheet to the other and containing one or more curvatures along the length of the grooves, the grooves
forming helically-shaped air channels, the second sheet integrally forming a second base plate secured to the heat-generating
component, a second helically-shaped air tube, and a second wall positioned between the second base plate and the second helically-shaped
air tube,

wherein the first wall and the second wall form a passage that defines a third helically-shaped air tube, and
wherein the first, second and third air tubes have a length with the helix shape being formed by the air channels that extend
along the length of the air tubes, the first, second and third air tubes being thermally coupled to the heat-generating component
by the first and second base plates to dissipate heat from the heat-generating component.

US Pat. No. 9,240,637

HIGH DENSITY TERMINAL BLOCK

SCHNEIDER ELECTRIC IT COR...

1. A module of a terminal block, the module comprising:
a body having an input configured to be coupled to an input wire and an output configured to be coupled to a plurality of
output wires;

a conductive element disposed within the input; and
a plurality of terminals, each terminal having a first portion and a second portion configured to be coupled to an output
wire,

wherein the first portions of the plurality of terminals are nested together to achieve a single conductive structure that
includes the first portions of the plurality of terminals folded onto one another to form a substantially flat contact surface,
and

wherein the conductive element is configured to engage and compress the input wire against the single conductive structure.

US Pat. No. 9,172,271

PARALLEL CONTROL AND PROTECTION FOR UPS

SCHNEIDER ELECTRIC IT COR...

1. A method of operating an Uninterruptable Power Supply (UPS) system having a first UPS and a second UPS coupled in parallel
to provide output power to a load from a power source, each of the first UPS and the second UPS having an inverter and having
a bypass switch, with each UPS configured to operate in one of an inverter mode in which output power is derived from the
power source through the inverter, and a bypass mode in which output power is derived from the power source bypassing the
inverter, the method comprising:
powering on the first UPS and the second UPS in the inverter mode;
designating one of the first UPS and the second UPS as a master UPS;
controlling, in the inverter mode, the bypass switch of the first UPS and the bypass switch of the second UPS using the master
UPS; and

controlling, in the inverter mode, output current of the inverter of the first UPS and output current of the inverter of the
second UPS using the master UPS.

US Pat. No. 9,145,677

ELECTROMAGNETIC LOCK DROP CEILING FOR AISLE CONTAINMENT SYSTEM AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. An air containment system configured to span an aisle formed by two rows of racks or by one row of racks and a wall to
form a ceiling, the air containment system comprising:
a frame structure configured to be supported by the two rows of racks or by the one row of racks and the wall, the frame structure
including a first elongate frame assembly extending along a length of a first row of the two rows of racks, a second elongate
frame assembly extending along a length of a second row of the two rows of racks or the wall, and a first elongate support
member hingedly connected to the first elongate frame assembly;

at least one ceiling panel releasably supported by the frame structure; and
a lock assembly coupled to the frame structure and configured to release the at least one ceiling panel upon detecting a predetermined
condition.

US Pat. No. 9,300,117

SERVICE ACCESS POINT FOR A UNINTERRUPTIBLE POWER SUPPLY

SCHNEIDER ELECTRIC IT COR...

1. A high availability power system, comprising:
an uninterruptible power system having an input to receive input power and an output to provide output power;
a maintenance bypass panel having an input to receive the output power provided by the uninterruptible power system and an
output to provide the input power to the input of the uninterruptible power system;

a busbar, formed from a conductive material and having a first contact region configured to electrically and mechanically
couple to one of the input and the output of the uninterruptible power system, a second contact region configured to electrically
and mechanically couple to one of the input and the output of the maintenance bypass panel, the busbar configured to conduct
power between the uninterruptible power system and the maintenance bypass panel; and

a cover formed from an insulating material and configured to be attached to the busbar and to permit at least one measurement
of the power conducted by the busbar while preventing accidental contact with the busbar.

US Pat. No. 9,231,439

SYSTEM AND METHOD FOR ESTIMATING AN EFFICIENCY OF A POWER DEVICE

SCHNEIDER ELECTRIC IT COR...

1. A method for estimating an operating efficiency of a power device coupled to a battery and at least one power source separate
from the power device, the method comprising:
identifying, by a controller of the power device, a state of operation of the power device in which the power device receives
input power from the at least one power source and provides output power to a load separate from the power device;

determining battery charging power including power provided to the battery to increase a state-of-charge of the battery;
measuring at least one characteristic related to the output power;
calculating an estimated input power of the power device received from the at least one power source based on the at least
one characteristic and the battery charging power; and

determining an estimated operating efficiency of the power device in providing the output power while operating in the state
of operation based on output power loss parameters associated with the power device and the estimated input power.

US Pat. No. 9,147,984

POWER DEVICE HAVING ROTATING OUTLET UNIT

SCHNEIDER ELECTRIC IT COR...

1. A power device comprising:
a housing;
a power input interface to the housing; and
a rotating outlet unit coupled to the housing, the rotating outlet unit having a plurality of power outlets to distribute
power from the power input, the rotating outlet unit being configured to rotate between a first position in which the power
outlets are disposed on one side of the housing and a second position in which the power outlets are disposed on another side
of the housing, the rotating outlet unit including a casing and a rotary socket element provided at one end of the casing,
the rotary socket element being fixed with respect to the casing and rotatably coupled to the housing to enable rotation of
the casing with respect to the housing,

wherein the housing and the casing include at least one protrusion provided on one of the housing and the casing and at least
two dimples provided on the other of the housing and the casing, the at least one protrusion being configured to be seated
in one of the at least two dimples when positioned in the first and second positions.

US Pat. No. 9,115,916

METHOD OF OPERATING A COOLING SYSTEM HAVING ONE OR MORE COOLING UNITS

SCHNEIDER ELECTRIC IT COR...

1. A method of operating a cooling system having one or more cooling units, the method comprising:
transitioning the operation of a cooling unit of the cooling system in a main operational state between one or more operational
conditions, including an off/standby condition,

wherein after a predetermined time period and a synchronization of a stepper motor of the cooling unit to a closed position
of a hot gas bypass valve, the cooling unit transitions to the off/standby condition in which the hot gas bypass valve of
the cooling unit is fully opened,

wherein temperature and discharge pressure threshold alarms of the cooling unit are disabled and fan speeds of an evaporator
and a condenser of the cooling unit are set to idle, and

wherein the cooling unit is ready for operation in the off/standby condition.

US Pat. No. 9,047,071

METHOD AND APPARATUS FOR CONTROLLING DISTRIBUTION OF POWER

SCHNEIDER ELECTRIC IT COR...

1. An apparatus for controlling application of power to a plurality of devices including at least one master device and at
least one controlled device, the apparatus comprising:
a power inlet constructed and arranged to receive power from a power source;
a plurality of power outlets including at least one master power outlet and at least one controlled power outlet;
a sense circuit adapted to sense at least one first characteristic of power delivered to the at least one master power outlet;
and

a controller adapted to:
generate at least one first power profile corresponding to the at least one first characteristic;
compare the at least one first power profile with at least one second power profile stored in at least one profile database
and determine whether the at least one first power profile is similar to the at least one second power profile;

determine a characteristic of a stand-by power consumption level of a device electrically connected to the at least one master
power outlet, wherein the stand-by power consumption level is extracted from the at least one second power profile in response
to a determination that the at least one first power profile is similar to the at least one second power profile, and wherein
the stand-by power consumption level is extracted from the at least one first power profile in response to a determination
that the at least one first power profile is not similar to the at least one second power profile;

compare the first characteristic of power delivered to the at least one master power outlet with the characteristic of the
stand-by power consumption level; and

control a supply of power from the power inlet to the at least one controlled outlet responsive to the comparison of the first
characteristic of power with the characteristic of the stand-by power consumption level.

US Pat. No. 9,274,019

SYSTEM AND METHOD FOR AIR CONTAINMENT ZONE AIR LEAKAGE DETECTION

SCHNEIDER ELECTRIC IT COR...

1. A system for measuring hot or cold aisle containment air leakage in a data center, the system comprising:
a plurality of equipment enclosures arranged in a first row and a second row;
a plurality of panels cooperatively arranged with the plurality of equipment enclosures to form an air containment region;
a conduit mounted within the air containment region and sealed at each end, the conduit having an orifice and a plurality
of openings distributed at substantially uniform intervals along a length of the conduit;

a differential air pressure detection device coupled to the orifice and configured to detect a difference between an air pressure
within the conduit and ambient air pressure outside of the air containment region; and

an air flow measurement device configured to calculate an infiltration air flow rate of the air containment region based on
the difference between the air pressure within the conduit and the ambient air pressure.

US Pat. No. 9,072,201

CONTAINER AIR HANDLING UNIT AND COOLING METHOD

SCHNEIDER ELECTRIC IT COR...

1. A modular cooling system configured to treat IT air generated by a data center, the modular cooling system comprising:
a plurality of ISO containers located outside the data center and movably coupled to the data center:
a supply duct configured to be selectively coupled to each of the plurality of ISO containers and to deliver conditioned air
to the data center from the plurality of ISO containers;

a return duct configured to be selectively coupled to each of the plurality of ISO containers and to deliver IT air to the
plurality of ISO containers from the data center; and

a plurality of cooling sub-system modules positioned within each of the plurality of ISO containers, the plurality of cooling
sub-system modules being configured to operate in parallel to achieve total cooling effect or a lesser cooling effect within
the data center, each cooling sub-system module comprising:

a housing configured to support cooling equipment,
an air-to-air heat exchanger supported by the housing to cool IT air supplied by the return duct, the air-to-air heat exchanger
having at least one tube configured to direct IT air from one end of the air-to-air heat exchanger to an opposite end of the
air-to-air heat exchanger and configured so that outdoor air circulates around the at least one tube, and

a mechanical cooling system supported by the housing, the mechanical cooling system being configured to receive IT air treated
by the air-to-air heat exchanger and to provide further cooling to the treated IT air, the mechanical cooling system including
a compressor provided at a bottom of the housing, a refrigerator condenser coil disposed directly above the air-to-air heat
exchanger, and an evaporator coil located downstream from the air-to-air heat exchanger, the arrangement being such that IT
air treated by the air-to-air heat exchanger travels through the evaporator coil and is directed to an outlet port in fluid
communication with the supply duct.

US Pat. No. 9,642,274

UNINTERRUPTIBLE POWER SUPPLY HAVING ADJUSTABLE INTERFACE

SCHNEIDER ELECTRIC IT COR...

1. A user interface module for an uninterruptible power supply, the user interface module comprising:
a housing having:
a front plane;
a backing surface, the backing surface configured to attach to a body of the uninterruptible power supply;
a top surface;
two side surfaces; and
a bottom surface, wherein each side surface comprises a pivot hole positioned near the top surface, a button slot positioned
near the bottom surface, and at least a first and a second locking hole positioned above the button slot; and

a module configured to fit inside and secured by the housing, the module including:
a body having a front face, the module being configured to tilt within the housing such that the front face of the module
can be positioned at various angles relative to the front plane of the housing, wherein the body of the module has two lateral
surfaces, each lateral surface comprising a cutout;

two pivot pins configured to fit in respective pivot holes;
two buttons configured to move in respective button slots responsive to being depressed by a user; and
two lock pins configured to fit in respective locking holes, wherein the button and the lock pin on each lateral surface of
the module are connected to each other and configured such that the lock pins can disengage from respective locking holes
to an extent that the buttons recede into their respective cutouts responsive to the buttons being depressed by the user.

US Pat. No. 9,438,134

SYSTEM AND METHOD FOR OFF-LINE UPS

SCHNEIDER ELECTRIC IT COR...

1. A method of operating an uninterruptible power supply (UPS), the method comprising:
generating, during a portion of an output cycle, a substantially sinusoidal output voltage responsive to a plurality of pulse
width modulation (PWM) control signals provided to a power conversion circuit of the UPS;

comparing the output voltage to a reference root mean square (RMS) voltage at each of a plurality of time intervals during
the portion of the output cycle;

calculating a PWM control signal scaling factor based on each of the comparisons to the reference RMS voltage;
maintaining the output voltage at substantially the reference RMS voltage by applying the calculated PWM control signal scaling
factor to at least one of the plurality of PWM control signals;

detecting that the output voltage has reached a maximum output voltage level;
clamping the output voltage by controlling an inverter to reduce the output voltage to a steady state output voltage reference
level; and

recording a phase angle at which the output voltage has reached the maximum output voltage level.

US Pat. No. 9,391,536

METHOD FOR PROVIDING LOW VOLTAGE DC POWER FROM AC MAINS POWER

SCHNEIDER ELECTRIC IT COR...

12. A method for generating DC power from an AC input line, the method comprising:
receiving input AC power from an AC power source coupled to the AC input line;
providing the input AC power to a rectifier having an input coupled to the AC input line via a first capacitor and an output
coupled to a second capacitor;

rectifying, with the rectifier, the input AC power to generate rectified DC power;
charging the second capacitor with the rectified DC power at a first rate in response to a determination that voltage across
the second capacitor is above a threshold; and

charging the second capacitor with the rectified DC power at a second rate in response to a determination that voltage across
the second capacitor is below the threshold.

US Pat. No. 9,356,409

DUAL COLUMN GANG OUTLETS FOR MINIMIZING INSTALLATION SPACE

SCHNEIDER ELECTRIC IT COR...

1. A power distribution unit comprising:
a housing including:
a first outer edge;
a second outer edge; and
a top surface contained between the first outer edge and the second outer edge and having a plurality of power outlets, each
of the plurality of power outlets having three output terminals, including a ground terminal, a first terminal, and a second
terminal;

at least one slot formed in the housing adjacent at least one of the plurality of power outlets, the at least one slot being
configured to retain a locking tab of a locking power cord inserted into one of the plurality of power outlets, wherein the
at least one slot extends completely through a wall of the housing;

wherein the plurality of power outlets are arranged in two adjacent columns, including a first column having a first plurality
of power outlets and a second column having a second plurality of power outlets, each power outlet of the first plurality
of power outlets being in a first rotational position and each power outlet of the second plurality of power outlets being
in a second rotational position offset from the first rotational position by 180 degrees.

US Pat. No. 9,405,342

SYSTEM AND METHOD FOR PROVIDING TIMING

Schneider Electric IT Cor...

1. A system for providing timing, the system comprising:
a processing device including:
a memory;
a ping timer;
a pong timer, a value of the pong timer being offset from a value of the ping timer in the memory; and
a control unit coupled to the memory via a processor bus and configured to execute instructions that implement a time checker,
the time checker being a logical timer that accesses the ping timer via the processor bus to determine whether a time interval
has passed and, upon determining that the time interval has passed, the time checker switches access from the ping timer to
the pong timer before the value of the ping timer reaches an overflow state due to a limited number of bits in the memory
allocated to storage thereof.

US Pat. No. 9,292,056

SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION OF POWER DISTRIBUTION INFORMATION

SCHNEIDER ELECTRIC IT COR...

1. A system of managing power distribution units comprising:
a master rack Power Distribution Unit (PDU) coupled to a network and including an input to receive power, at least one output
to provide power, and a port connected to the network, the master rack PDU being configured to receive short-range wireless
signals; and

a plurality of child rack PDU's each including an input to receive power, at least one output to provide power, and a port,
each of the plurality of child rack PDU's being configured to operate as a child rack PDU responsive to an absence of a connection
to the network via the port and to transmit short-range wireless signals including data measurements;

wherein the master rack PDU is configured to operate as the master rack PDU responsive to the port being connected to the
network, receive the data measurements in the short-range wireless signals transmitted by the plurality of child rack PDU's,
and transmit the data measurements to a computer over the network via the port.

US Pat. No. 9,225,944

METHOD AND SYSTEM FOR DISPLAYING A COVERAGE AREA OF A CAMERA IN A DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A method for depicting a coverage area of a camera within a graphical representation of a data center, the method comprising:
establishing, by a computer, a representation of the camera within the graphical representation of the data center;
determining at least two devices associated with the camera, including a first device and a second device;
establishing representations of the at least two devices within the graphical representation of the data center, the representations
of the first device and the second device having at least one vertice marking an outer boundary of each device;

defining the coverage area based on the at least one vertice of the first device, the at least one vertice of the second device,
and the representation of the camera such that a first outer edge of the coverage area extends from the at least one vertice
of the first device to the representation of the camera, and a second outer edge of the coverage area extends from the at
least one vertice of the second device to the representation of the camera; and

displaying the coverage area within the graphical representation of the data center.

US Pat. No. 9,787,209

MODULAR THREE PHASE ON-LINE UPS

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply (UPS) system, comprising:
an interconnect circuit configured to receive three-phase AC input power from a three-phase AC power source;
a first UPS subsystem coupled to the interconnect circuit and having a first single-phase AC-to-DC converter, a second single-phase
AC-to-DC converter and a first output configured to provide a first single-phase AC output power, the first UPS subsystem
configured to convert at least one phase of the three-phase AC input power into the first single-phase AC output power;

at least one second UPS subsystem coupled to the interconnect circuit and having a third single-phase AC-to-DC converter,
a fourth single-phase AC-to-DC converter and a second output configured to provide a second single-phase AC output power,
the at least one second UPS subsystem configured to convert at least one phase of the three-phase AC input power into the
second single-phase AC output power; and

a third output coupled to the first output and the second output, the third output configured to provide a combination of
the first single-phase AC output power and the second single-phase AC output power to a load,

wherein, in a first mode of operation, the interconnect circuit is configured to conduct a first phase of the three-phase
AC input power to the first UPS subsystem and a second phase of the three-phase AC input power to the at least one second
UPS subsystem, and

wherein, in a second mode of operation, the interconnect circuit is configured to disconnect the three-phase AC input power
from the first UPS subsystem and is selectively configurable to conduct each and any phase of the three-phase AC input power
to the third single-phase AC-to-DC converter and the fourth single-phase AC-to-DC converter of the at least one second UPS
subsystem.

US Pat. No. 9,568,206

METHOD AND APPARATUS FOR COOLING

SCHNEIDER ELECTRIC IT COR...

1. A method of improving efficiency of a cooling unit associated with a data center at a partial cooling load, comprising:
detecting a degree of opening of an electronic expansion hot gas bypass valve configured to divert a portion of coolant from
a compressor to a heat exchanger of the cooling unit based on the partial cooling load of the data center, the electronic
expansion hot gas bypass valve being a step valve having a plurality of steps each correlating to a degree of opening; and

adjusting a discharge pressure set point based on the detected degree of opening of the electronic expansion hot gas bypass
valve to prevent cycling of the compressor.

US Pat. No. 9,357,671

COOLING UNIT AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. A cooling unit comprising
a housing having a front and a back;
at least one fan provided at one of the front and the back of the housing; and
a V-shaped evaporator positioned within the housing and coupled to a source of liquid refrigerant, the evaporator having two
panels extending from adjacent the bottom of the housing to adjacent the top of the housing when positioning the evaporator
in the housing, the arrangement being such that an inside of the panels of the evaporator face air being drawn through the
housing of the cooling unit by the at least one fan, each panel of the V-shaped evaporator including at least two cooling
slabs in fluid communication with the source of liquid refrigerant and arranged one on top of the other so that the at least
two cooling slabs extend vertically in the housing, each cooling slab of the at least two cooling slabs including

an inlet for receiving liquid refrigerant from the source of liquid refrigerant and an outlet to exhaust vaporized refrigerant
to the source of liquid refrigerant,

an inlet header having the inlet, and an outlet header having the outlet, the inlet header and the outlet header being provided
at one end of the cooling slab, and

a transfer header disposed between the inlet header and the outlet header, the transfer header being provided at an opposite
end of the cooling slab and extending across an entire width of the cooling slab,

wherein a transfer header of a first cooling slab is positioned adjacent an inlet header and an outlet header of a second,
adjacently placed cooling slab, with the first cooling slab being separated from the second cooling slab.

US Pat. No. 9,146,259

SMART CURRENT TRANSFORMERS

SCHNEIDER ELECTRIC IT COR...

1. A current monitoring device comprising:
a housing including a first portion and a second portion;
a current transformer contained within the first portion of the housing and configured to be removeably coupled to a power
line and to generate a reference signal having a level related to a current level of the power line; and

a sensor circuit contained within the second portion of the housing, connected to the current transformer, and configured
to be removeably coupled to a communication bus and to convert the reference signal to a digital reference signal and provide
a signal indicative of the current level to the communication bus;

wherein the second portion of the housing includes a lid capable of being opened and closed and configured to clamp the communication
bus in place within the second portion of the housing when closed in a locked position; and

wherein the second portion of the housing further includes a first opening and a second opening, and is configured to allow
the communication bus to pass through the first opening and the second opening and couple to the sensor circuit within the
second portion when the lid is in the locked position.

US Pat. No. 9,743,549

LOCKING ASSEMBLY FOR SECURING ELECTRONIC EQUIPMENT WITHIN AN EQUIPMENT RACK

SCHNEIDER ELECTRIC IT COR...

1. A locking assembly for securing an electronic module to a chassis of a rack enclosure within a mounting slot of the chassis,
the electronic module including a latch having an edge, the locking assembly comprising:
a lock configured to be secured to a vertical rail of the chassis, the lock further being configured to prevent the electronic
module from being slidably installed into and removed from its respective mounting slot and to prevent the latch of the electronic
module from being opened when the electronic module is secured in place within the chassis of the rack enclosure, the lock
including a main body having first and second openings, a strip portion separating the first and second openings, first and
second protrusions configured to position the lock with respect to the chassis when installing the lock to the chassis, an
upper edge portion provided along an upper edge of the main body and configured to engage the edge of the latch of the electronic
module to prevent the latch of the electronic module from being opened when the lock is secured to the vertical rail of the
chassis, and first and second fingers extending from the main body and configured to engage the rail of the chassis to prevent
the lock from being removed from the chassis; and

a key configured to enable the lock to be removed from the chassis thereby enabling the installation and removal of the electronic
module from the chassis.

US Pat. No. 9,722,459

APPARATUS AND METHOD FOR PROVIDING UNINTERRUPTIBLE POWER

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply, comprising:
an input configured to receive input power;
an output;
a power conversion circuit coupled with the input and the output;
a controller coupled with the power conversion circuit;
the power conversion circuit comprising an inverter;
the inverter comprising a low pass filter;
the low pass filter comprising an inductor; and
the controller configured to provide control signals to the inverter such that a first current, measured at the inductor,
generates a second current at the output having an output waveform, the first current having a first polarity and the second
current having a second polarity, wherein the first polarity is either zero or the same polarity as the second polarity over
a complete cycle of the output waveform.

US Pat. No. 9,601,944

POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptable power supply, comprising:
an input to receive an input AC voltage;
an input circuit coupled to the input and including a positive boost circuit and a negative boost circuit, and configured
to provide a positive DC voltage at a first output and a negative DC voltage at a second output;

a controller coupled to the input circuit and configured to provide a first current reference signal, the first current reference
signal having a periodic waveform including a first half period and a second half period, each half period having a period
end, the waveform comprising a substantially rectified sine wave modified such that a value of the rectified sine wave is
equal to zero for a predetermined period of time prior to the period end of the second half period;

a positive current loop control circuit coupled to the controller and to the positive boost circuit and configured to receive
the first current reference signal and provide an output signal to the positive boost circuit; and

a negative current loop control circuit coupled to the controller and to the negative boost circuit and configured to provide
an output signal to the negative boost circuit.

US Pat. No. 9,455,541

RECESSED MOVABLE JAWS FOR CONNECTING A PLUG-IN UNIT TO A BUSWAY

SCHNEIDER ELECTRIC IT COR...

1. A plug-in unit configured to be coupled to a busway, the plug-in unit comprising:
a housing configured to be secured to the busway;
an electrical coupling assembly coupled to the housing and configured to move between an uncoupled position in which the plug-in
unit is uncoupled to the busway and a coupled position in which the plug-in unit is electrically coupled to the busway; and

an actuator assembly coupled to the housing and the electrical coupling assembly, the actuator assembly being configured to
move the electrical coupling assembly between the uncoupled and coupled positions and to secure the plug-in unit to the housing.

US Pat. No. 9,166,870

REMOTE MONITORING SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method of remotely monitoring an uninterruptible power supply (UPS), the method comprising:
detecting, by a management device implemented in hardware and included within the UPS, an operational condition of the UPS;
generating, by the management device, status update information using a self-describing computer language, the status update
information describing the operational condition of the UPS and including at least one of a load percentage, a temperature,
and a humidity;

sending, by the management device, the status update information to a first remote computer via a communication network;
receiving, by the management device, at least one command for the UPS via the communication network, the at least one command
being configured to change at least one characteristic of the UPS; and

changing the at least one characteristic of the UPS based on the at least one command and configuration information associated
with the UPS.

US Pat. No. 9,490,689

METHODS AND APPARATUS FOR CONTROLLING POWER SWITCHES VIA A DIGITAL COMMUNICATION BUS

SCHNEIDER ELECTRIC IT COR...

1. A method for controlling a set of power switches operating as a power converter, the method comprising:
providing the set of power switches and at least one switch driver, each power switch being operable to connect and disconnect
one of a set of input power lines to an output power line, the at least one switch driver setting a state of an associated
power switch or switches;

generating by a controller a set of switch commands, each of the switch commands indicating a desired state of a respective
one of said power switches at a moment in time;

sending each of the switch commands from the controller to a driver module containing the at least one switch driver associated
with the respective power switch;

receiving at the driver module the switch commands for the respective power switch; and
causing the at least one switch driver to set the state of the respective power switch;
wherein sending said switch commands comprises multiplexing commands for at least a subset of said power switches into a series
of multi-bit command frames and transmitting said multi-bit command frames on a serial communication channel,

wherein each multi-bit command frame includes a plurality of switch command bits, each of the plurality of switch command
bits representing one of said switch commands, and an address field identifying the subset of power switches to which the
switch command bits relate, and

wherein receiving said switch commands comprises receiving said multi-bit command frames from said serial communication channel
and extracting individual switch commands therefrom.

US Pat. No. 9,478,970

METHOD AND APPARATUS FOR PROVIDING A POWER FACTOR CORRECTION (PFC) COMPATIBLE SOLUTION FOR ELECTRONIC DEVICES

Schneider Electric IT Cor...

1. An electronic device comprising:
a microcontroller, configured to generate a nonsinusoidal signal waveform for delivery to a load by the electronic device,
the microcontroller responsive to the nonsinusoidal signal waveform delivered to the load, the microcontroller further configured
to:

sample the nonsinusoidal signal waveform to collect output signal samples; and
adjust at least one parameter of the nonsinusoidal signal waveform by adjusting generation of the nonsinusoidal signal waveform
responsive to an effect of the load on the nonsinusoidal signal waveform, the effect of the load being due to the load's demand
for more or less power and determined from the output signal samples collected, wherein the electronic device is a server.

US Pat. No. 9,223,905

SYSTEMS AND METHODS FOR PREDICTING FLUID DYNAMICS IN A DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for predicting airflow within a data center using a potential flow technique, the method
comprising:
receiving, by a computer, data representing a physical layout of at least one data center space;
generating, by the computer, at least one modeled data center space based on the received data;
automatically generating, by the computer, an unstructured grid within the at least one modeled data center space comprising
a plurality of unstructured grid cells, each unstructured grid cell of the plurality of unstructured grid cells having a size;

determining, by the computer, airflow velocity values for each unstructured grid cell using airflow velocity potentials;
determining, by the computer, a temperature value for each unstructured grid cell using the airflow velocity values;
determining, by the computer, a concentration value for each unstructured grid cell using the airflow velocity values;
calculating, by the computer, a comparison result indicating whether the concentration values, the airflow velocity values
and the temperature values for the plurality of the unstructured grid cells satisfy convergence criteria;

generating a plurality of computational grid cells from the plurality of unstructured grid cells, wherein each computational
grid cell of the plurality of computational grid cells has a first size and is associated with the determined airflow velocity
value, the determined temperature value, and the determined concentration value;

dividing a subset of computational grid cells of the plurality of computational grid cells into a plurality of visualization
cells, wherein each visualization cell of the plurality of visualization cells has a second size less than the first size
of a computational grid cell that includes the visualization cell;

calculating, by the computer, a smoothed value for each visualization cell, wherein the smoothed value is at least one of
a smoothed airflow velocity value, a smoothed temperature value, and a smoothed concentration value; and

displaying, by the computer, an indication of the smoothed value for each visualization cell.

US Pat. No. 9,072,200

HOT AISLE CONTAINMENT PANEL SYSTEM AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. First and second panel assemblies for an air containment system configured to enclose a hot or cold aisle of a data center
defined by a first row of first and third equipment racks provided on one side of the aisle and a second row of second and
fourth equipment racks provided on an opposite side of the aisle, the first and second panel assemblies each comprising:
a lightweight, flexible panel fabricated from fabric or plastic, the lightweight flexible panel having a first end, a second
opposite end, a first side and a second opposite side, the flexible panel having a widthwise dimension approximately equal
to a widthwise dimension of one of the equipment racks,

a support housing configured to be secured to one of the first or third equipment racks provided on the one side of the aisle,
the support housing comprising a spring-loaded supply roll configured to secure the first end of the flexible panel,

an end connector configured to secure the second end of the flexible panel to one of the second or fourth equipment racks
provided on the opposite side of the aisle,

wherein the flexible panel is configured to be removed from the spring-loaded supply roll to extend to one of the second or
fourth equipment racks provided on the opposite side of the aisle;

wherein the support housing of the first panel assembly is secured to the first equipment rack provided on one side of the
aisle, and the end connector provided on the second end of the flexible panel of the first panel assembly is secured to the
second equipment rack provided on the opposite side of the aisle,

wherein the support housing of the second panel assembly is secured to the third equipment rack provided on the one side of
the aisle immediately adjacent to the first equipment rack, and the end connector provided on the second end of the flexible
panel of the second panel assembly is secured to the fourth equipment rack provided on the opposite side of the aisle immediately
adjacent to the second equipment rack, and

wherein the second side of the flexible panel of the first panel assembly is immediately adjacent to the first side of the
flexible panel of the second panel assembly to create a substantially contiguous ceiling over a space within the aisle defined
between the first and third equipment racks and the second and fourth equipment racks, and

at least one side connector configured to secure the second side of the flexible panel of the first panel assembly to the
first side of the flexible panel of the second panel assembly, the at least one side connector including a flexible member
secured to one of the second side of the flexible panel of the first panel assembly or to the first side of the flexible panel
of the second panel assembly and a mating member coupled to the other of the second side of the flexible panel of the first
panel assembly or the first side of the flexible panel of the second panel assembly, the flexible member being received within
the mating member to create a substantially airtight seal between the flexible panels of the first and second panel assemblies.

US Pat. No. 9,373,956

SYSTEMS AND METHODS FOR OPTIMIZING POWER LOADS IN A POWER DISTRIBUTION UNIT

SCHNEIDER ELECTRIC IT COR...

1. A power management system comprising:
at least one power strip having a plurality of receptacles, wherein each receptacle of the plurality of receptacles is constructed
and arranged to deliver power output in response to a connection of a device requiring power, the power strip being further
constructed and arranged to deliver output power through aggregate groups of subsets of the plurality of receptacles; and

a power management controller including at least one processor operatively connected to a memory, the power management controller,
when the processor is executing, being configured to:

identify, automatically, at least one receptacle of the plurality of receptacles to optimize power distribution across the
aggregate groups for a connection of the device requiring power, the controller further being configured to identify the at
least one receptacle of the plurality of receptacles based on a balancing of three phases of input power delivered to the
at least one power strip and a comparison of gathered historical maximum load data for individual receptacles of the plurality
of receptacles from a predetermined data log time frame and real-time power usage, and

generate an indication responsive to the identification of the at least one receptacle of the plurality of receptacles to
identify the at least one receptacle of the plurality of receptacles for the connection.

US Pat. No. 9,116,897

TECHNIQUES FOR POWER ANALYSIS

SCHNEIDER ELECTRIC IT COR...

1. A method for power analysis of a plurality of computing platform components, the method comprising:
discovering one or more logical elements associated with at least one physical component of the plurality of computing platform
components, the one or more logical elements including at least one of an operating system component associated with the at
least one physical component and a virtual machine associated with the at least one physical component;

executing, by a computer processor, a process for each physical component of the plurality of computing platform components,
the process including:

receiving information associated with the physical component;
retrieving electronically stored data associated with the physical component, the data including at least power consumption
data; and

estimating an estimated power usage of the physical component based at least in part on the stored power consumption data
and any logical elements associated with the physical component;

aggregating the estimated power usage of each physical component of the plurality of computing platform components;
outputting an indicator of the estimated power usage of the plurality of computing platform components;
analyzing the estimated power usage of the plurality of computing platform components;
identifying one or more problems responsive to analyzing the estimated power usage of the plurality of computing platform
components;

generating one or more suggestions to solve the identified one or more problems; and
identifying and illustrating the impact of the one or more suggestions.

US Pat. No. 9,072,191

CONFIGURABLE RACK AND RELATED METHODS

SCHNEIDER ELECTRIC IT COR...

1. A configurable rack for supporting components of an uninterruptible power supply, the configurable rack comprising:
a frame assembly having a front and a rear, wherein the front of the frame assembly and the rear of the frame assembly are
configured to receive electronic modules in stacked relation along a height of the frame assembly;

a busbar backplane disposed between the front and the rear of the frame assembly, the busbar backplane extending vertically
within the frame assembly along an entire height of the frame assembly, the busbar backplane extending along a plane parallel
to planes defined by the front and the rear of the frame assembly, the busbar backplane including a plurality of busbars;
and

at least one connector coupled to each electronic module, the at least one connector being configured to engage and be secured
to the busbar to provide an electrical coupling of the electronic module and the busbar,

wherein the plurality of busbars and the connectors are configured to electrically couple the electronic modules that are
received within the front of the frame assembly and within the rear of the frame assembly in a hot swappable manner, and

wherein each busbar has a front edge surface, a back edge surface, and two side surfaces, the front edge surface and the back
edge surface each having a width that is less than a width of each side surface, each busbar extending in a plane perpendicular
to the plane of the busbar backplane so that the front edge surface faces the front of the frame assembly and the rear edge
surface faces the rear of the frame assembly, and

wherein each busbar has a plurality of front contact areas and a plurality of rear contact areas provided along a length of
the busbar on opposing flat side surfaces of the busbar, the plurality of front contact areas and rear contact areas being
configured to receive the at least one connector associated with the electronic module from the front of the frame assembly
and from the rear of the frame assembly.

US Pat. No. 9,451,731

COOLING SYSTEM AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. A method of manipulating components of a cooling system of a data center of the type comprising rows of equipment racks,
the method comprising:
providing components for the cooling system including one or more sources of coolant adapted to distribute coolant, one or
more cooling racks, and flexible tubing to connect the one or more sources of coolant to the one or more cooling racks;

designing a cooling system to address cooling needs in the data center, including selecting components for the cooling system;
assembling the components for the cooling system in the data center;
positioning one or more cooling racks within a row of equipment racks so that a cooling rack is positioned in between two
equipment racks;

operating the cooling system;
identifying hot spots within the data center; and
adjusting the location of one or more cooling racks within the row of equipment racks by removing a cooling rack that is positioned
in between two equipment racks in the data center and moving the cooling rack to another position in between two other equipment
racks in the data center based on the indentified hot spots in the data center.

US Pat. No. 9,374,928

INTELLIGENT RACK ENCLOSURE

SCHNEIDER ELECTRIC IT COR...

1. An equipment enclosure, comprising:
a housing having a plurality of side panels defining an interior compartment divided into a first region dimensioned to contain
an equipment rack and bounded on sides by a plurality of mounting rails, and a second region disposed between the plurality
of side panels of the housing and the plurality of mounting rails of the first region, a width of the second region between
the plurality of side panels and the plurality of mounting rails being less than a width of the first region between mounting
rails; and

a controller configured to monitor at least one operating parameter of the equipment enclosure and wholly disposed in the
second region of the interior compartment.

US Pat. No. 9,080,802

MODULAR ICE STORAGE FOR UNINTERRUPTIBLE CHILLED WATER

SCHNEIDER ELECTRIC IT COR...

1. A method of supplying emergency cooling to a cooling system of the type having at least one cooling unit, a main chiller
separate from the at least one cooling unit, and at least one backup cooling unit, the method comprising acts of:
A) providing continuous cooling of the at least one cooling unit by the main chiller when the main chiller is operational;
B) maintaining a quantity of stored cooled material using a liquid supply from the main chiller when the main chiller is operational;
and

C) cooling the liquid supply using the quantity of stored cooled material when the main chiller is not operational with the
at least one backup cooling unit, the at least one backup cooling unit including at least one chiller configured to further
cool at least a portion of the liquid supply to generate and maintain the quantity of cooled material when the main chilling
unit is operational, the at least one chiller including at least one thermoelectric chiller.

US Pat. No. 9,684,349

SYSTEM AND METHOD FOR CONFIGURING UPS OUTLETS

SCHNEIDER ELECTRIC IT COR...

1. A system for configuring outlet groups on an uninterruptible power supply (UPS), the system comprising:
a computer system connected via a communication link to the UPS, wherein the computer system includes:
a memory;
at least one processor coupled to the memory, the at least one processor configured to:
receive data pertaining to at least one device;
receive data pertaining to a plurality of outlet groups associated with the UPS;
determine one configuration profile for the at least one device, the one configuration profile being included in a plurality
of configuration profiles;

determine one outlet group of the plurality of outlet groups, the one outlet group being configured for the one configuration
profile;

associate the one configuration profile with the one outlet group; and
provide an instruction for a user to connect the at least one device in an outlet included in the one outlet group.

US Pat. No. 9,093,860

FAULT DETECTION FOR PARALLEL INVERTERS SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A method of operating an Uninterruptible Power Supply (UPS) system having a first Uninterruptible Power Supply (UPS) and
a second UPS, the method comprising:
coupling at least one control line between the first UPS and the second UPS to operate the first UPS and the second UPS in
a parallel mode of operation;

providing output power from each of the first UPS and the second UPS to a load;
detecting a fault condition in the UPS system;
decoupling the at least one control line in response to detecting the fault condition;
operating the first UPS in a diagnostic mode of operation in response to decoupling the at least one control line; and
determining if the fault condition is associated with the first UPS,
wherein coupling at least one control line between the first UPS and the second UPS includes coupling a connection module
between the first UPS and the second UPS, and

wherein decoupling the at least one control line includes disconnecting the connection module from the first UPS.

US Pat. No. 9,667,097

SYSTEM AND METHOD FOR MAINTAINING PROPER PHASE NEUTRAL WIRING IN A POWER SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A method of operating a UPS system having a first UPS, the method comprising:
receiving, at an input of the first UPS, input power from a power source;
generating, with a first analysis circuit within the first UPS, a first signal containing information indicative of a signal
characteristic of the input power received by the first UPS;

receiving, at the first analysis circuit, a second signal from a second analysis circuit of a device coupled to the power
source, the second signal containing information indicative of a signal characteristic of input power received by the device;

analyzing, with the first analysis circuit, the first signal from the first analysis circuit of the first UPS and the second
signal from the second analysis circuit of the device;

determining, in response to analyzing the first signal and the second signal, whether an improper wiring condition exists
at the input of the first UPS;

in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition
does not exist at the input, providing output power to an output of the first UPS; and

in response to a determination, based on the analysis of the first signal and the second signal, that an improper wiring condition
does exist at the input, de-energizing the first UPS.

US Pat. No. 9,595,742

SYSTEM AND METHOD FOR REPLACING A BATTERY IN AN UNINTERRUPTIBLE POWER SUPPLY

SCHNEIDER ELECTRIC IT COR...

1. A system for guiding a user through a procedure corresponding to installing a battery in an uninterruptible power supply
that is associated with the system, the system comprising:
at least one programmed processor embedded within the uninterruptible power supply, the programmed processor being configured
to determine whether the battery is disconnected from the uninterruptible power supply, and in response to determining the
battery is disconnected, retrieve at least one stored procedure corresponding to a battery installment routine for installing
the battery in the uninterruptible power supply, the stored procedure including a plurality of steps arranged in a predetermined
order to be performed by the user;

at least one device embedded within the uninterruptible power supply, the device providing information regarding a status
indicator of the battery of the uninterruptible power supply, the programmed processor and the device being operatively coupled
such that the programmed processor receives at least a portion of the information of the battery from the device; and

a display screen including an alphanumeric display forming part of the uninterruptible power supply, and including at least
one function button, the display screen being coupled to the programmed processor for displaying the plurality of steps of
the stored procedure,

wherein in response to receiving user acceptance of the battery installment routine the display screen forming part of the
uninterruptible power supply is configured to depict individual steps of the plurality of steps in the predetermined order
and the programmed processor is configured to guide the user via the display screen through the individual steps of the plurality
of steps of the stored procedure in the predetermined order to install a battery and to receive confirmation from the user
that an individual step has been completed based on activation of the function button by the user, and determine whether the
user followed the stored procedure to install the battery, and wherein the stored procedure is further configured to prompt
for input from the user subsequent to installation of the battery, and the programmed processor is configured to wait for
the input prior to resetting at least one battery performance indicator.

US Pat. No. 9,509,299

APPARATUS AND METHOD FOR CONTROL OF SEMICONDUCTOR SWITCHING DEVICES

SCHNEIDER ELECTRIC IT COR...

1. A control circuit for control of a semiconductor switching device comprising:
a first feedback path between a first electrode and a control electrode of said semiconductor switching device, said first
feedback path comprising a plurality of capacitors and a plurality of threshold devices, said control circuit being operable
such that a capacitance in the first feedback path is dependent on the voltage level at said first electrode, said plurality
of capacitors and said plurality of threshold devices arranged such that a first one of the plurality of capacitors will become
operationally arranged in parallel with a second one of the plurality of capacitors upon the voltage level at the first electrode
being greater than a threshold level.

US Pat. No. 9,267,826

SYSTEM FOR SELF-POWERED, WIRELESS MONITORING OF ELECTRICAL CURRENT, POWER AND ENERGY

SCHNEIDER ELECTRIC IT COR...

15. A system for monitoring a plurality of circuit branches coupled to a power line, the system comprising:
a communications bus; and
a plurality of first modules, each first module comprising:
a Current Transformer (CT) configured to be coupled to at least one of the plurality of circuit branches and to produce a
reference signal having a level related to a current level of the at least one of the plurality of circuit branches; and

means for coupling each one of the plurality of first modules together in parallel, receiving a signal related to the reference
signal from each one of the plurality of first modules, storing energy from the reference signal from each one of the plurality
of first modules, and for powering, with the stored energy, a microcontroller coupled to the communications bus to sample
the reference signal to determine the current level of the at least one of the plurality of circuit branches.

US Pat. No. 9,810,255

THREADED STANDOFF WITH ANTI-ROTATIONAL STRUCTURE

SCHNEIDER ELECTRIC IT COR...

1. A standoff assembly for separating a first component from a second component from one another a predetermined distance,
the standoff assembly comprising:
a standoff including a predetermined length defined between a first end and a second end, and an anti-rotational structure
formed at the first end, the standoff being hexagonal in cross section along a length of the standoff, the anti-rotational
structure being configured to be inserted into a corresponding opening formed in the first component;

a first fastener to secure the first component to the first end of the standoff; and
a second fastener to secure the second component to the second end of the standoff,
wherein the anti-rotational structure includes a first protrusion formed on one side of the threaded opening and a second
protrusion formed on an opposite side of the threaded opening, the first protrusion being formed from two sides of the standoff
and the second protrusion being formed from an opposing two sides of the standoff.

US Pat. No. 9,373,979

DIGITAL CONTROL METHOD FOR OPERATING UPS SYSTEMS IN PARALLEL

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply configured to operate in parallel with a second uninterruptible power supply in a power
distribution system, the uninterruptible power supply comprising:
a first inverter configured to provide power to a load;
a communication interface configured to be coupled to the second uninterruptible power supply via a communication channel,
wherein the communication interface is further configured to receive at least one first status signal from the second uninterruptible
power supply via the communication channel, the at least one first status signal indicating whether the second uninterruptible
power supply is configured to operate in one of a master state or a slave state, the communication interface being configured
to provide isolation between the uninterruptible power supply and the second uninterruptible power supply; and

a controller coupled to the first inverter and the communication interface and configured to control the uninterruptible power
supply to operate in one of the master state and the slave state based on the at least one first status signal,

wherein in the master state, the uninterruptible power supply is configured to control voltage to the load, and in the slave
state, the uninterruptible power supply is configured to control an output current value of the first inverter.

US Pat. No. 10,034,417

SYSTEM AND METHODS FOR SIMULATION-BASED OPTIMIZATION OF DATA CENTER COOLING EQUIPMENT

SCHNEIDER ELECTRIC IT COR...

1. A method for optimizing cooling power consumption in a data center including a plurality of racks and at least one cooling unit, the method comprising:receiving information regarding the data center, including a layout of the plurality of racks and the at least one cooling unit within the data center;
determining an initial power consumption value for the data center by implementing an energy model;
predicting at least one temperature value and at least one airflow rate value by implementing a numerical simulation model;
defining constraints associated with operation of the at least one cooling unit, including maximum and minimum airflow rate values for the at least one cooling unit, maximum and minimum supply temperature values for the at least one cooling unit, and a maximum inlet temperature for each rack of the plurality of racks;
determining at least one optimal cooling set point value for the at least one cooling unit using an optimization solver based on the initial power consumption value and the at least one predicted temperature value and the at least one predicted airflow rate value, the optimization solver minimizing a power consumption value of a power consumption function while maintaining the constraints associated with operation of the at least one cooling unit; and
controlling operation of the at least one cooling unit using the at least one optimal cooling set point value.

US Pat. No. 9,930,810

AISLE CONTAINMENT ROOF SYSTEM HAVING A FIXED PERFORATED PANEL AND A MOVABLE PERFORATED PANEL

SCHNEIDER ELECTRIC IT COR...

1. An aisle containment roof system configured to span an aisle formed by two rows of racks or by one row of racks and a wall to form a ceiling, the aisle containment roof system comprising:a frame configured to be supported by the two rows of racks or by the one row of racks and the wall or by a dedicated frame structure independent of the two rows of racks;
a fixed perforated panel fixedly secured to the frame, the fixed perforated panel including a pattern of openings formed therein;
a movable perforated panel movably secured to the frame, the movable perforated panel having a pattern of openings corresponding to the pattern of openings of the fixed perforated panel; and
a mechanism configured to move the movable perforated panel relative to the fixed perforated panel to align the openings of the movable perforated panel with the openings of the fixed perforated panel,
the movable perforated panel being configured to move between a closed position in which the pattern of openings of the fixed perforated panel and the pattern of openings of the movable perforated panel are offset with respect to one another and an opened position in which the pattern of openings of the fixed perforated panel and the pattern of openings of the movable perforated panel are aligned with respect to one another,
the mechanism including at least one spring assembly configured to bias the movable perforated panel to one of the closed and opened positions, and
wherein the at least one spring assembly includes a bracket secured to the frame, a bolt secured to the bracket, a washer provided on the bolt, and a compression spring disposed over the bolt and held in place between the bracket and the washer.

US Pat. No. 9,494,985

SYSTEM AND METHOD FOR ASSESSING AND MANAGING DATA CENTER AIRFLOW AND ENERGY USAGE

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for providing energy assessment and optimization in a data center that includes at least
one cooling provider, and at least one cooling consumer, the at least one cooling consumer having cooling requirements, the
method comprising:
receiving data regarding cooling availability and power consumption for the at least one cooling consumer, cooling capacity
of the at least one cooling provider, at least one temperature measurement including a temperature of air at an inlet side
of the at least one cooling consumer and a temperature of air at the outlet side of the at least one cooling provider, a physical
relationship between the at least one cooling consumer and the at least one cooling provider in the data center, and data
representative of a coupling factor relating to the physical relationship between the at least one cooling consumer and the
at least one cooling provider, wherein the received data regarding the physical relationship is based on configuration and
layout of the at least one cooling provider and the at least one cooling consumer;

storing the received data;
computing an air ratio based on the data representative of the coupling factor, wherein the air ratio is based on airflow
from the at least one cooling provider and airflow of the at least one cooling consumer;

computing, by a processor, at least one value representative of airflow distribution effectiveness in the data center between
the at least one cooling consumer and the at least one cooling provider based on the received data regarding the physical
relationship between the at least one cooling consumer and the at least one cooling provider, the received data regarding
the power consumption of the at least one cooling consumer, at least one calculation using the received data regarding the
at least one temperature measurement including a difference between the temperature of air at the inlet side of the at least
one cooling consumer and the temperature of air at the outlet side of the at least one cooling provider, and the air ratio;
and

computing, by the processor, at least one cooling setting for the at least one cooling provider based on the at least one
value representative of airflow distribution effectiveness, including the physical relationship between the at least one cooling
consumer and the at least one cooling provider in the data center, which results in a reduction in energy usage of the data
center while satisfying the cooling requirements of the at least one cooling consumer.

US Pat. No. 9,787,087

SYSTEMS AND METHODS FOR DISCHARGING AN INPUT CAPACITANCE

SCHNEIDER ELECTRIC IT COR...

1. An electronic device comprising:
a first line input and a second line input;
a first device input and a second device input;
a filter circuit having a first input electrically coupled to the first line input, a second input electrically coupled to
the second line input, a first output electrically coupled to the first device input, and a second output, the filter circuit
including at least one capacitor electrically coupling at least one of the first input of the filter circuit to the second
input of the filter circuit or the first output of the filter circuit to the second output of the filter circuit; and

a switching circuit having a control input to receive a control signal having one of a first state and a second state, the
switching circuit being configured to electrically couple the second output of the filter circuit to the second device input
in response to the control signal having the first state and to electrically couple the second output of the filter circuit
to one of the first input of the filter circuit and the first output of the filter circuit through a resistor in response
to the control signal having the second state.

US Pat. No. 9,450,359

INTERFACE APPARATUS AND METHOD FOR CONNECTING PLUG-IN UNITS TO A BUSWAY

SCHNEIDER ELECTRIC IT COR...

1. An interface apparatus configured to be mechanically secured and electrically coupled to a busway, the interface apparatus
comprising:
a housing configured to mate with the busway;
a plug-in interface coupled to the housing, the plug-in interface being configured to receive a plug-in unit;
an electrical coupling assembly coupled to the housing and configured to move between an uncoupled position in which the plug-in
interface is uncoupled to the busway and a coupled position in which the plug-in interface is electrically coupled to the
busway; and

an actuator assembly coupled to the housing and the electrical coupling assembly, the actuator assembly being configured to
move the electrical coupling assembly between the uncoupled and coupled positions and to secure the plug-in unit to the housing.

US Pat. No. 9,804,649

SYSTEMS AND METHODS OF REMOTE COMMUNICATION

SCHNEIDER ELECTRIC IT COR...

1. A system comprising:
at least one power device including:
an input to receive power from a power source;
an output operatively coupled to the input and configured to provide power;
a data storage;
a network interface; and
a controller coupled to the input, the output, the data storage and the network interface and configured to:
provide, according to a reporting schedule, identification information directly to a cloud service via the network interface;
provide, according to the reporting schedule, secured information directly to the cloud service, the secured information being
descriptive of performance of the at least one power device;

detect occurrence of an event of importance;
assign, responsive to detecting that the event of importance has occurred, a value to the event of importance corresponding
to a level of importance;

compare the value to a threshold; and
transmit, responsive to detecting that the event of importance has occurred and comparing the value to the threshold, event
information directly to the cloud service, the event information being descriptive of the event of importance.

US Pat. No. 9,584,045

CONVERTER CONTROLLER WITH HALF BRIDGE ADAPTIVE DEAD TIME CIRCUIT AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. A controller for a power converter using a pulse width modulation waveform, comprising:
a current level controller configured to detect a current; and
at least one control module, the control module configured to cause the controller to
generate a command for switching a first power semiconductor switch from a conductive state to a non-conductive state;
maintain the first power semiconductor switch in the non-conductive state for an off-time comprising a time when the pulse
width modulation waveform is in an off state;

maintain a second power semiconductor switch in a non-conductive state during the off-time, based upon whether the detected
current will remain in a same direction during all of a cycle period of the pulse width modulation waveform, wherein a diode
allows an electric current to pass the second power semiconductor switch in one direction, while blocking current in an opposite
direction;

generate a delay interval as a variable delay interval before switching of said first power semiconductor switch from the
non-conductive state back to a conductive state; and

modify a duration of the variable delay interval in relation to the pulse width modulation waveform.

US Pat. No. 9,373,246

ALARM CONSOLIDATION SYSTEM AND METHOD

SCHNEIDER ELECTRIC IT COR...

1. A method for consolidating alarms using a data center monitoring device coupled to a network, the method comprising:
receiving a first alarm of a plurality of alarms from at least one physical infrastructure device via the network, the at
least one physical infrastructure device including at least one of an uninterruptible power supply (UPS) and a power distribution
unit (PDU);

determining that the first alarm is subject to a consolidation filter, including determining that the first alarm belongs
to an alarm group, wherein the consolidation filter specifies characteristics of a consolidated alarm;

generating a first instance of the consolidated alarm according to the characteristics specified in the consolidation filter;
adding information regarding details of the first alarm to the first instance of the consolidated alarm;
reporting, in response to receiving the first alarm prior to receiving other alarms, the first instance of the consolidated
alarm, including the information regarding the details of the first alarm;

receiving a second alarm of the plurality of alarms;
receiving a third alarm of the plurality of alarms;
determining that the second alarm and the third alarm are subject to the consolidation filter, including determining that
the second alarm and third alarm belong to the alarm group, the first alarm, the second alarm, and the third alarm having
common attributes including a physical location and a power path;

generating a second instance of the consolidated alarm;
adding the information regarding the details of the first alarm, information regarding details of the second alarm and information
regarding details of the third alarm to the second instance of the consolidated alarm; and

reporting the second instance of the consolidated alarm, including the information regarding the details of the first alarm,
the information regarding the details of the second alarm, and the information regarding the details of the third alarm.

US Pat. No. 9,660,808

COMMUNICATION PROTOCOL AND METHOD FOR AUTHENTICATING A SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A method for using a computer system to authenticate an external system, the computer system including a memory and a processor
coupled to the memory, the memory including a public memory area and a private memory area, the public memory area being readable
and writeable and including a first portion of memory, the method comprising acts of:
denying, by the computer system, access to the private memory area;
providing, to the external system by the computer system, write access to the public memory area;
generating, by the computer system, a secret key having a value based at least in part on data stored in the first portion
of the public memory area, and based at least in part on values indicating portions of data to be used in generating the secret
key;

receiving, by the computer system, a key from the external system; and
providing, to the external system by the computer system, access to the private memory area in response to verification that
the received key has a value that matches the value of the secret key to authenticate the external system to the computer
system.

US Pat. No. 9,667,069

ADAPTIVE LOAD SHARING OF PARALLEL INVERTERS SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A method of operating a UPS system having a first UPS and a second UPS, the method comprising:
powering on the first UPS;
receiving power from a first input power source coupled to an input of the first UPS;
providing power to a load coupled to an output of the first UPS;
receiving, by the first UPS, a signal indicative of at least one of a power rating of the second UPS and power capabilities
of a second input power source providing power to the second UPS; and

adjusting the power provided to the load by the first UPS in response to power characteristics of the first UPS and the at
least one of the power rating of the second UPS and the power capabilities of the second input power source indicated in the
received signal.

US Pat. No. 9,976,757

AIRFOIL FRAME FOR COMPUTER ROOM AIR CONDITIONING UNIT

SCHNEIDER ELECTRIC IT COR...

1. A computer room air conditioner unit comprising:a housing including a front, a back, two sides, a bottom and an open top, the open top of the housing being configured to receive and direct IT air toward an interior region of the housing;
a heat exchanger supported by the housing within the interior region of the housing;
at least one fan module supported by the housing, the at least one fan module being configured to draw IT air into the housing through the open top, direct IT air through the heat exchanger, and exhaust treated air; and
an airfoil frame secured to the upper portions of the front and the sides of the housing at the open top of the housing, the arrangement being such that the heat exchanger is disposed below the airfoil frame, the airfoil frame defining an inlet of the housing and being configured to direct IT air to the heat exchanger and to create a boundary layer that substantially eliminates pressure drops at the inlet of the housing.

US Pat. No. 9,638,726

SYSTEM AND METHOD FOR DETECTING BRANCH CIRCUIT CURRENT

SCHNEIDER ELECTRIC IT COR...

1. A system monitor for a load center comprising:
a current sensor configured to be coupled to a circuit branch within the load center and to produce a measurement signal having
a level related to a current level of the circuit branch;

a sensor circuit coupled to the current sensor and removably coupled to a terminal, the sensor circuit configured to provide
the measurement signal to the terminal; and

a controller coupled to the terminal and configured to monitor signals at the terminal, wherein the controller is further
configured to detect disconnection of the current sensor from the terminal based on the level of the measurement signal at
the terminal falling outside of a predetermined envelope for a predetermined period of time,

wherein the controller includes a timer having a value equal to the predetermined period of time, and wherein the controller
is further configured to start the timer in response to detection of the signal level at the terminal falling outside of the
predetermined envelope and determine that the current sensor is disconnected from the terminal in response to expiration of
the timer.

US Pat. No. 9,667,132

FLYBACK CONVERTER

SCHNEIDER ELECTRIC IT COR...

1. A flyback converter, the flyback converter comprising:
an input to receive input AC power;
an output to provide output DC power;
a rectifier coupled to the input and configured to convert the input AC power into DC power;
a transformer having a primary winding and a secondary winding, the primary winding having a first end coupled to the rectifier;
a switch coupled between a second end of the primary winding and a ground connection, the switch being closed in a first mode
of operation and open in a second and third mode of operation; and

a regenerative snubber circuit coupled between the first end of the primary winding and the second end of the primary winding,
the regenerative snubber circuit comprising:

a snubber capacitor coupled to the first end of the primary winding;
a series connection of a snubber resistor and a snubber switch coupled between the snubber capacitor and the second end of
the primary winding; and

a snubber diode, coupled in parallel with the series connection of the snubber resistor and the snubber switch, and coupled
between the snubber capacitor and the second end of the primary winding,

wherein the flyback converter is configured such that in the first mode of operation, the DC power from the rectifier charges
the transformer,

wherein the flyback converter is configured such that, in the second mode of operation, the snubber capacitor stores leakage
energy received from the primary winding through the snubber diode, and

wherein the flyback converter is configured such that, in the third mode of operation, the snubber capacitor provides the
stored leakage energy to the primary winding through the series connection of the snubber resistor and the snubber switch.

US Pat. No. 9,595,876

DC-DC CONVERTER

SCHNEIDER ELECTRIC IT COR...

1. A converter comprising:
an input to receive an input voltage having an input voltage value; an output; a first voltage bus; a midpoint;
a first transformer having a primary and a secondary;
a first circuit coupled to the input, coupled between the midpoint and the first voltage bus and coupled to the primary of
the first transformer;

an output circuit coupled to the secondary of the first transformer and coupled to the output; and
a control circuit coupled to the first circuit and configured to control the first circuit to provide an AC voltage at the
primary of the first transformer, wherein the control circuit is configured to generate control signals to control switches
of the first circuit using a modified triangular waveform, wherein the modified triangular waveform does not follow a triangular
shape over a complete cycle of the waveform, wherein the modified triangular waveform has slope values including at least
a positive slope and a negative slope.

US Pat. No. 9,804,622

CALIBRATION OF CURRENT SENSORS IN PARALLEL POWER CONVERTERS

SCHNEIDER ELECTRIC IT COR...

1. A method for performing a current calibration procedure for a number of power supply units that are arranged for operation
in parallel to supply a total electric current to a load, each power supply unit including at least one current sensor for
measuring a current supplied by the unit, and a feedback controller for using the measured current during said parallel operation
and controlling the unit to maintain a desired condition of supply, comprising:
(a) operating a selected one of said power supply units as a secondary supply in parallel connection with a primary power
supply, while both are disconnected from said load;

(b) operating said current sensor in the selected power supply unit to measure current flowing in said secondary supply;
(c) receiving information of current flowing in said primary supply measured by a primary current sensor outside the selected
power supply unit; and

(d) calibrating the current measurement in the selected power supply unit against the primary current sensor, on the basis
that said current in the primary supply is equal and opposite to the current flowing in the secondary supply.

US Pat. No. 9,639,132

SYSTEMS AND METHODS FOR AUTOMATIC DETECTION OF A DEVICE

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) comprising:
a first input configured to receive input power from a first power source;
a second input configured to receive input power from a second power source;
an output configured to provide output power derived from at least one of the first power source and the second power source;
a universal serial bus (USB) port having a data line with a voltage level;
a detection module coupled to the USB port; and
a controller coupled to the detection module and the USB port and configured to monitor the voltage level of the data line
of the USB port, and to determine whether a device connected to the USB port is configured as a host device supplying power,
a host device requiring power or a peripheral device, based at least in part upon the voltage level.

US Pat. No. 9,685,881

AC-DC RECTIFIER SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. An AC-DC rectifier comprising:
an input configured to be coupled to an AC power source and to receive input AC power from the AC power source having an input
AC voltage waveform;

a positive output configured to provide a positive DC output voltage to a load;
a negative output configured to provide a negative DC output voltage to the load;
a first DC bus;
a second DC bus;
a capacitor coupled between the first DC bus and the second DC bus;
a converter coupled to the input, the first DC bus, and the second DC bus and configured to receive the input AC power from
the input, the converter including a first switch coupled between the first DC bus and ground and a second switch coupled
between the second DC bus and ground;

output circuitry coupled to the converter, the positive output, and the negative output;
a first output capacitor coupled between the positive output and ground;
a second output capacitor coupled between the negative output and ground; and
a controller coupled to the converter and the output circuitry, the converter configured, during a positive half line cycle
of the input AC voltage waveform, to:

operate the first switch to remain in an open state;
operate the second switch to couple the second DC bus to ground;
operate the converter to maintain a positive DC link voltage on the first DC bus; and
operate the output circuitry to charge the first output capacitor and provide the positive DC output voltage to the positive
output.

US Pat. No. 9,674,043

SYSTEMS AND METHODS FOR AUTOMATICALLY CLUSTERING DEVICES

SCHNEIDER ELECTRIC IT COR...

1. A computer implemented method comprising:
determining an identifier of a parent device;
providing output power along a power path to a child device via a power output of the parent device;
transmitting an identification message to the child device via the power output of the parent device, the identification message
including the identifier of the parent device;

receiving a response to the identification message from the child device via a first network interface of the parent device
distinct from the power output, the response including an identifier of the child device; and

generating a power connection hierarchy based on the power path between at least the parent device and the child device and
based on the identifier of the child device.

US Pat. No. 9,784,703

METHOD FOR AIR FLOW FAULT AND CAUSE IDENTIFICATION

SCHNEIDER ELECTRIC IT COR...

1. A method of identifying faults in an air-cooled system, the air-cooled system including a first temperature sensor configured
to detect a temperature of an exhaust heat, a second temperature sensor configured to detect a temperature of a heat sink
secured to a heat-generating component, the heat sink having fins, each with a surface area configured to transfer heat to
or from air surrounding the heat sink, and an air flow sensor configured to detect a rate of air flow through an air-cooling
device, the method comprising:
measuring a first series of temperatures with the first temperature sensor to produce a first time series of first measured
temperature values;

measuring a second series of temperatures with the second temperature sensor to produce a second time series of second measured
temperature values;

measuring a series of rates of air flow with the air flow sensor to produce a time series of measured air flow rate values;
and

identifying a fault in response to at least one of:
the first time series of the first measured temperature values being outside an acceptable range of a first target value,
the second time series of the second measured temperature values being outside an acceptable range of a second target value,
and

the time series of the measured air flow rate values being outside an acceptable range of a third target value.

US Pat. No. 9,683,794

INDIRECT FREE COOLING MODULE

SCHNEIDER ELECTRIC IT COR...

8. A cooling system for cooling air from a data center, the cooling system comprising:
a cooling device having an outlet in fluid communication with the data center;
an indirect free cooling module comprising:
an adiabatic device in fluid communication with a source of external air and configured to cool the source of external air
to produce cooled external air;

at least one heat exchanger configured to be in fluid communication with the adiabatic device and the flow of air from the
data center and to cool the flow of air from the data center with the cooled external air produced by the adiabatic device
to produce treated air;

a damper system in fluid communication with the flow of air from the data center, the cooling device, and the at least one
heat exchanger of the indirect free cooling module such that an inlet of a first damper of the damper system is in fluid communication
with the flow of air from the data center and an outlet of the first damper is in fluid communication with an inlet to the
cooling device, and an inlet of a second damper of the damper system is in fluid communication with the treated air from the
heat exchanger and an outlet of the second damper is in fluid communication with the inlet to the cooling device; and

a control system in communication with the damper system and configured to selectively direct the flow of air from the data
center to an inlet of the at least one heat exchanger, or through the first damper to an inlet of the cooling device, or to
both the inlet of the at least one heat exchanger and through the first damper to the inlet of the at least one cooling device.

US Pat. No. 9,784,773

INTELLIGENT SENSOR NETWORK IN A LOAD CENTER

SCHNEIDER ELECTRIC IT COR...

1. A system for monitoring a plurality of circuit branches coupled to an input line within a load center having a housing,
the system comprising:
a plurality of current sensors, each current sensor of the plurality of current sensors being configured to be coupled to
at least one of the plurality of circuit branches and to produce a signal having a level related to a current level of the
at least one of the plurality of circuit branches;

a communication bus;
a plurality of sensor circuits, each coupled to an associated one of the plurality of current sensors and configured to be
coupled to the communication bus, wherein each one of the plurality of sensor circuits is configured to convert the signal
from the associated one of the plurality of current sensors to a digital current measurement signal and provide the digital
current measurement signal to the communication bus;

a power module configured to be coupled to the input line and the communication bus and to receive input AC power from the
input line;

a collector; and
a cable configured to be coupled between the power module and the collector;
wherein the power module comprises:
an analog interface configured to be coupled to the input line;
a digital interface configured to be coupled to the communication bus;
a digital output configured to be coupled to the cable; and
an AC/DC converter coupled to the analog interface, the digital interface and the digital output and configured to receive
the input AC power from the input line, convert the received input AC power into DC power having a desired DC voltage level,
and provide the DC power to the communication bus via the digital interface and to the cable via the digital output, and

wherein the power module is further configured to:
provide power to the plurality of sensor circuits via the communication bus;
provide power to the collector via the cable;
measure at least one of voltage, frequency and phase of the input AC power and provide signals related to the measured voltage,
frequency or phase of the input AC power to the collector via the cable;

receive the digital current measurement signals from the plurality of sensor circuits and provide the received digital current
measurement signals to the collector via the cable.

US Pat. No. 9,670,689

CONTAINER BASED DATA CENTER SOLUTIONS

SCHNEIDER ELECTRIC IT COR...

1. A cooling container comprising:
a shipping container housing having a length, a width, and a height, the length greater than the width and the length greater
than the height, and at least one lengthwise sidewall opening;

a chilled water storage tank including a first interface for receiving chilled water, a plurality of straight pipes joined
by elbow connections to provide a folded path, a full path length of the chilled water storage tank being greater than the
length of the shipping container housing, and a second interface for outputting the chilled water; and

a central spine arranged lengthwise within the shipping container housing, the central spine including a plurality of interfaces
configured to provide refrigeration fluid and electrical connections and to receive at least one of a chiller module and a
free cool unit.

US Pat. No. 9,804,201

CURRENT MONITORING DEVICE

SCHNEIDER ELECTRIC IT COR...

1. A current monitoring device comprising:
a current transformer configured to be removeably coupled to a power line within a load center and to generate a reference
signal having a level related to a current level of the power line within the load center;

a sensor circuit connected to the current transformer and configured to convert the reference signal to a measurement signal;
a flexible cable having a first end and a second end, the first end coupled to the sensor circuit; and
a connection portion coupled to the second end of the flexible cable and configured to be removeably coupled to a communications
bus within the load center;

wherein the sensor circuit is further configured to provide the measurement signal to the communication bus via the flexible
cable and the connection portion, and

wherein the connection portion includes a lid capable of being opened and closed and configured to clamp the communication
bus in place within the connection portion when closed in a locked position.

US Pat. No. 9,791,908

SYSTEMS AND METHODS FOR PROTECTING VIRTUALIZED ASSETS

SCHNEIDER ELECTRIC IT COR...

1. A power management system configured to protect a plurality of information technology (IT) assets, the system comprising:
a memory;
at least one processor coupled to the memory; and
a migration component executable by the at least one processor and configured to:
identify the plurality of IT assets, the plurality of IT assets including at least one power supply unit and at least one
host server;

generate an association between at least one IT asset and at least one power supply unit;
receive a power-related event from the at least one power supply unit;
correlate the power-related event with at least one affected IT asset based on the generated association;
determine if at least one of the virtual machines is a critical IT asset;
determine a sequence of actions, wherein the sequence of actions is configured to migrate at least one virtual machine from
the at least one affected IT asset to a non-affected IT asset and wherein the sequence of actions includes actions identifying
the plurality of virtual machines in an ordered list; and

execute the sequence of actions.

US Pat. No. 9,830,410

SYSTEM AND METHOD FOR PREDICTION OF TEMPERATURE VALUES IN AN ELECTRONICS SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for evaluating cooling performance of an electronics system, the system having a plurality
of physical components including cooling consumers housed in a rack, and at least one cooling provider, the method comprising:
receiving information related to physical structures of the electronics system;
dividing the electronics system into a computational grid including a plurality of fluid cells and a plurality of solid cells,
positions of the plurality of solid cells corresponding to positions of the physical components within the electronics system
such that at least a portion of the plurality of solid cells defines a region within an interior of the physical components;

determining air flow values for the plurality of fluid cells using a potential flow model analysis such that air flow values
for the plurality of fluid cells are determined using airflow velocity potentials;

controlling at least one of a physical component of the plurality of physical components and the at least one cooling provider
based on the determined air flow values;

for each fluid cell of the plurality of fluid cells, determining a temperature of the fluid cell by calculating heat transfer
into the fluid cell from any adjacent fluid cells and from any adjacent solid cells, the calculation of heat transfer into
the fluid cell from any adjacent fluid cell based at least in part on the determined air flow values;

for each solid cell of the plurality of solid cells, determining a temperature of the solid cell by calculating heat transfer
into the solid cell from any adjacent solid cells and heat transfer out of the solid cell into any adjacent fluid cells; and

storing, on a storage device, the air flow values and the temperature of the fluid cell and the temperature of the solid cell.

US Pat. No. 9,727,064

DROPPED CEILING SYSTEM COOLING PREDICTION

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for evaluating ceiling plenum airflow patterns and cooling performance of equipment in a
data center, the equipment including a plurality of equipment racks and at least one cooling provider, the method comprising:
receiving data related to types of equipment and an arrangement of equipment in the data center;
receiving data related to a configuration of the ceiling plenum;
determining first parameters related to airflow in the ceiling plenum and first parameters related to pressure in the ceiling
plenum using a first airflow model;

determining second parameters related to airflow through the plurality of equipment racks and second parameters related to
pressure across the plurality of equipment racks using a second airflow model distinct from the first airflow model;

determining a coupling relationship between airflow through the plurality of equipment racks and airflow into the ceiling
plenum;

adjusting the first parameters based on at least the second parameters and the coupling relationship;
determining a sufficiency of airflow through the plurality of equipment racks; and
storing, on a storage device, an indication of the sufficiency of airflow through the plurality of equipment racks.

US Pat. No. 10,025,330

METHOD AND APPARATUS FOR CHARACTERIZING THERMAL TRANSIENT PERFORMANCE

SCHNEIDER ELECTRIC IT COR...

1. A method for evaluating cooling performance in a data center, the method comprising:receiving at least one measured steady state parameter of the data center;
receiving parameters for equipment in the data center, the parameters including information descriptive of mass of the equipment;
calculating an effective temperature associated with the equipment and an exhaust temperature of the equipment at a first time period of a plurality of time periods based on the at least one measured steady state parameter and the received parameters;
calculating an effective temperature and an exhaust temperature for each subsequent time period of the plurality of time periods based on the at least one measured steady state parameter, the received parameters, and the effective temperature and the exhaust temperature at a previous time period of the plurality of time periods; and
controlling at least one of a cooler and an infrastructure system based on at least one of the calculated subsequent effective temperature and exhaust temperatures.

US Pat. No. 10,001,761

POWER CONSUMPTION MODEL FOR COOLING EQUIPMENT

SCHNEIDER ELECTRIC IT COR...

1. A method for managing power consumption of cooling equipment in a data center, comprising:receiving at least one parameter of at least one cooling device located in the data center;
receiving, by a controller comprising a processor, measurements of an ambient temperature, an ambient humidity, and an airflow rate from one or more sensors;
implementing a power consumption efficiency model that includes at least one loss parameter and is based on the at least one parameter of the at least one cooling device, wherein the loss parameter is at least one of a no-load loss parameter, a proportional loss parameter, and a square-law loss parameter associated with the power consumption efficiency of the cooling equipment, and implementing the power consumption efficiency model includes:
determining at least one correction factor for at least one loss parameter, the at least one correction factor including an ambient temperature correction factor based on the measured ambient temperature and a nominal ambient temperature, an ambient humidity correction factor based on a difference between the measured ambient humidity and a nominal ambient humidity, and an airflow rate correction factor based on the measured airflow rate and a nominal airflow rate, the measured airflow rate associated with a fan of the at least one cooling device;
applying the at least one correction factor to the at least one loss parameter by multiplying the at least one loss parameter by the at least one correction factor;
determining a power consumption rate for the at least one cooling device based on the at least one corrected loss parameter;
displaying the power consumption rate for the at least one cooling device; and
adjusting at least one component of the at least one cooling device, by the controller, based on the power consumption rate for the at least one cooling device, wherein the component comprises at least one of: a computer room air conditioner (CRAC), a computer room air handler (CRAH), a pump, a chiller, or a cooling tower, and
wherein the adjustment comprises adjusting at least one of a fan speed, a cooling fluid temperature, and a cooling fluid flow rate.

US Pat. No. 9,941,735

CIRCUIT AND METHOD FOR PROVIDING AN UNINTERRUPTIBLE POWER SUPPLY

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply circuit having a main supply input, connections for a battery, and a supply output, the uninterruptible power supply circuit comprising an input converter and an output converter, said input converter being connected between said main supply input and said output converter, said output converter being connected between an output of said input converter and said supply output, the circuit being operable in (i) a normal operation mode in which power is received at said main supply input and converted by said input converter and output converter in series to provide an output power supply via said supply output to a load, and (ii) a discharge mode wherein stored energy from said battery is released to said load via the output converter to maintain said output power supply to the load in the absence of power at said main supply input, wherein the circuit includes a further converter operable to provide a charging current supply to said battery from a charging supply input, which may be the same as the main supply input or different, said charging current bypassing said input converter, and wherein said further converter is a bidirectional converter and is operable in said discharge mode to deliver at least a portion of said released energy to the output converter indirectly, via said input converter.

US Pat. No. 9,859,749

UPS HAVING A DELTA CONVERTER UTILIZED AS INPUT POWER REGULATOR IN A DOUBLE CONVERSION SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply (UPS), comprising:
an input configured to receive AC input power from an AC power source; an output configured to provide AC output power to
a load;

a DC power source;
a first power converter coupled to the input and the DC power source, the first power converter including a first AC-to-DC
converter and a transformer, the transformer having a primary winding having a first end coupled to the input and a second
end coupled to the output, the transformer further having a secondary winding coupled to the first AC-to-DC converter, the
first power converter configured, during a first mode of operation of the UPS, to provide a first portion of the AC input
power as the AC output power via the primary winding and convert a second portion of the AC input power that is different
than the first portion of the AC input power into DC power via the first AC-to-DC converter;

a second power converter coupled to the input and the DC power source, the second power converter including a second AC-to-DC
converter, the second power converter configured to convert the AC input power into DC power via the second AC-to-DC converter
during a second mode of operation of the UPS;

a DC-to-AC converter coupled to the first power converter, the second power converter, the DC power source and the output;
and

a controller coupled to the first power converter and the second power converter, wherein the controller is configured to
determine whether the AC input power is within a predefined operating range, and, in response thereto, operate the UPS in
the first mode of operation.

US Pat. No. 9,641,025

METHOD AND APPARATUS OF MASTER SELECTION LOGIC IN UPS PARALLEL SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A method of operating a UPS system having a plurality of UPS's, the method comprising:
powering on the UPS system;
assigning each one of the plurality of UPS's a unique identifier;
calculating a master priority index for each one of the plurality of UPS's based on the unique identifier of each one of the
plurality of UPS's; and

based on the master priority index of each one of the plurality of UPS's, configuring each one of the plurality of UPS's to
operate in one of a master mode of operation and a controlled mode of operation.

US Pat. No. 9,965,564

APPARATUS AND METHOD OF DISPLAYING HARDWARE STATUS USING AUGMENTED REALITY

SCHNEIDER ELECTRIC IT COR...

1. A method of accessing equipment status information in a data center, the method comprising:detecting within the data center, by a mobile computing device, a first fiduciary marker affixed on or near a first piece of equipment within at least one image displayed on a display screen of the mobile computing device, the at least one image captured by an image capture device coupled to the mobile computing device, the first fiduciary marker configured to contain encoded first equipment identification data associated with the first piece of equipment;
decoding, by the mobile computing device, the first equipment identification data from the first fiduciary marker;
providing, by the mobile computing device, the first equipment identification data to a data center management system for the data center through a communications network;
receiving, by the mobile computing device, status information that notifies a user of at least one of an alert and an alarm active for the first piece of equipment from the data center management system, responsive to providing the first equipment identification data to the data center management system, through the communication network; and
superimposing the status information upon the at least one image displayed on the display screen of the mobile computing device.

US Pat. No. 9,933,460

TERMINAL BLOCK HAVING INTEGRATED CURRENT TRANSFORMERS

SCHNEIDER ELECTRIC IT COR...

1. A terminal block for a power device including a casing and a power cord, the terminal block being configured to be secured within the casing and to secure the power cord, the terminal block comprising:a body configured to fit within the casing of the power device, the body having at least one recess formed therein, the body including a front portion and a back portion, the front portion and the back portion each being fabricated from dielectric material, the front portion of the body including a front surface having at least one recess formed therein, the back portion of the body including at least one lug corresponding to the at least one recess formed in the front portion of the body; and
at least one current transformer sized to fit within the at least one recess of the body,
wherein each lug is configured to secure an end of a wire of the power cord through a respective current transformer.

US Pat. No. 9,887,579

POWER CONVERTER WITH DIGITAL CURRENT CONTROL CIRCUIT

SCHNEIDER ELECTRIC IT COR...

1. A current control circuit for a power converter to control the switching thereof, the current control circuit comprising:
a digital controller using a logical error signal to produce a logical control signal with a fixed fundamental frequency for
the power converter; and

a current measurement device for measuring a current in the power converter,
wherein the current control circuit is configured to compare the current in the power converter to a current reference to
determine the logical error signal, and wherein the logical error signal causes a generation of the logical control signal
from the digital controller,

wherein the digital controller is configured to control the power converter so the current in the power converter has a profile
comprising a rising slope and a falling slope within a single clock period, and is configured to attempt to center the falling
slope on the current reference.

US Pat. No. 9,800,245

BIPOLAR GATE DRIVER

SCHNEIDER ELECTRIC IT COR...

1. A gate driver, the gate driver comprising:
a level shifter circuit configured to be coupled to a controller, to receive control signals from the controller, each control
signal having a voltage with respect to a control ground, and to redefine the voltage of each control signal with respect
to a chip ground to generate redefined control signals;

a gate driver chip, coupled to the level shifter circuit and including a high side gate driver and a low side gate driver,
the high side gate driver configured to be coupled to a first semiconductor device and configured to provide first bipolar
control signals to the first semiconductor device based on the redefined control signals, and the low side gate driver configured
to be coupled to a second semiconductor device and being configured to provide second bipolar control signals to the second
semiconductor device based on the redefined control signals; and

a power source including a positive power supply and being coupled to the gate driver chip and the chip ground, the power
source configured to provide a first positive supply voltage and a first negative supply voltage to the high side driver,
to provide a second positive supply voltage to the low side driver, and to provide a second negative supply voltage to the
low side driver and to the chip ground, wherein the power source is further configured to derive the first positive supply
voltage, the first negative supply voltage, the second positive supply.

US Pat. No. 9,774,330

BIPOLAR GATE DRIVER

SCHNEIDER ELECTRIC IT COR...

1. A gate driver, the gate driver comprising:
a level shifter circuit configured to be coupled to a controller, to receive control signals from the controller, each control
signal having a voltage with respect to a control ground, and to redefine the voltage of each control signal with respect
to a chip ground to generate redefined control signals;

a gate driver chip, coupled to the level shifter circuit and including a high side gate driver and a low side gate driver,
the high side gate driver configured to be coupled to a first semiconductor device and configured to provide first bipolar
control signals to the first semiconductor device based on the redefined control signals, and the low side gate driver configured
to be coupled to a second semiconductor device and being configured to provide second bipolar control signals to the second
semiconductor device based on the redefined control signals; and

a power source including a positive power supply and being coupled to the gate driver chip and the chip ground, the power
source configured to provide a first positive supply voltage and a first negative supply voltage to the high side driver,
to provide a second positive supply voltage to the low side driver, and to provide a second negative supply voltage to the
low side driver and to the chip ground, wherein the power source is further configured to derive the first positive supply
voltage, the first negative supply voltage, the second positive supply.

US Pat. No. 9,984,033

SYSTEMS AND METHODS FOR BIASING A BUS

SCHNEIDER ELECTRIC IT COR...

1. A bi-directional differential bus interface comprising:a differential transmitter having a non-inverting terminal, an inverting terminal, and an enable terminal configured to receive an enable signal;
a differential receiver having a non-inverting terminal and an inverting terminal; and
a biasing circuit electrically coupled to the non-inverting terminal of the differential transmitter and the inverting terminal of the differential transmitter, the biasing circuit being configured to:
receive the enable signal; and
generate a voltage difference between the non-inverting terminal of the differential transmitter and the inverting terminal of the differential transmitter that is at least approximately 200 mV in response to assertion of a control signal based on the enable signal and received on a control input of the biasing circuit,
wherein the differential transmitter and the differential receiver are disposed in a single integrated circuit transceiver, the non-inverting terminal of the differential transmitter is electrically connected to the non-inverting terminal of the differential receiver, and the inverting terminal of the differential transmitter is electrically connected to the inverting terminal of the differential receiver.

US Pat. No. 9,923,413

LINE BALANCING UPS

SCHNEIDER ELECTRIC IT COR...

1. A method for controlling an uninterruptible power supply (UPS) having a polyphase power input and an input power circuit
coupled to the polyphase power input, the method comprising acts of:
determining to reduce a load on a first phase of the polyphase power input; and
in response thereto, controlling the input power circuit to reduce a first input current drawn from the first phase by a first
amount and increase at least one second input current drawn from at least one second phase of the polyphase power input by
a second amount such that the first input current drawn from the first phase of the polyphase power input is not equal to
the second input current drawn from the at least one second phase of the polyphase power input.

US Pat. No. 9,904,331

METHOD FOR COMPUTING COOLING REDUNDANCY AT THE RACK LEVEL

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method of determining cooling redundancy information, comprising:
modeling in a computer at least one location to be cooled by a plurality of coolers, wherein the at least one location includes
at least one of an equipment rack, a cluster of equipment racks, and a room of equipment racks;

iteratively modeling one or more cooler failure scenarios until a model of a cooler failure scenario of the one or more cooler
failure scenarios indicates inadequate cooling at the at least one location, wherein iteratively modeling the one or more
cooler failure scenarios includes calculating whether adequate cooling is available at the at least one location by calculating
cooler failure scenarios from a least number of coolers shut down to a most number of coolers shut down and terminating the
calculating of cooler failure scenarios and recording when a number of coolers shut down in a cooler failure scenario results
in inadequate cooling, and wherein each cooler failure scenario of the one or more cooler failure scenarios includes at least
one shut down cooler affecting the at least one location;

recording information identifying each modeled cooler failure scenario along with whether each modeled cooler failure scenario
results in adequate cooling;

identifying the cooling redundancy information as one less than the number of coolers shut down in that modeled cooler failure
scenario having the smallest number of coolers shut down and also having inadequate cooling available;

computing an aggregate availability, a, of adequate cooling based on combinations of coolers included in each cooler failure
scenario of the recorded information

identifying the cooling redundancy information as a Cooling Redundancy Index (CRI), the CRI a function of the aggregate availability,
a;

calculating the cooling redundancy information as the CRI; and
configuring data center equipment based on the CRI.

US Pat. No. 9,882,423

UNINTERRUPTIBLE POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply, comprising:
a first input configured to receive input power from a first power source;
a second input configured to receive input power from a second power source;
an output configured to provide output power to a load derived from power from at least one of the first power source and
the second power source;

a power conversion circuit coupled with the first input, the second input and the output; and
a controller coupled with the power conversion circuit, the controller configured to:
in a first mode of operation, control the power conversion circuit to provide an output voltage of the output power at substantially
a first voltage level;

generate a profile of the load;
in a second mode of operation, control the power conversion circuit to provide an output voltage of the output power at substantially
a second voltage level, with the second voltage level being less than the first voltage level and based on the profile of
the load;

detect that a capacity of the load has changed by a threshold amount; and
in response to the detection, generate an updated profile of the changed load.

US Pat. No. 9,845,977

SYSTEMS AND METHODS FOR COMPUTER ROOM AIR CONDITIONING

SCHNEIDER ELECTRIC IT COR...

8. A method of cooling, comprising:
providing, via a liquid pump, a first portion of a liquid refrigerant to a first cooling circuit, wherein the first cooling
circuit includes a direct expansion valve, a first evaporator coil, and a compressor;

providing, via the liquid pump and an economizer valve, a second portion of the liquid refrigerant to a second cooling circuit,
wherein the second cooling circuit includes the economizer valve and a second evaporator coil;

regulating, at the direct expansion valve, the first portion of the liquid refrigerant provided to the first evaporator coil;
outputting, from the first evaporator coil, a first vapor refrigerant to the compressor;
compressing, at the compressor, the first vapor refrigerant and outputting a third vapor refrigerant to a condenser;
regulating, at the economizer valve, the second portion of the liquid refrigerant provided to the second evaporator coil;
generating, via the second evaporator coil, a second vapor refrigerant from the second portion of the liquid refrigerant provided
via the liquid pump and the economizer valve; and

outputting, from the second evaporator coil, the second vapor refrigerant to the condenser, bypassing the compressor.

US Pat. No. 9,847,672

SYSTEM AND METHOD TO IMPROVE NETWORK RELIABILITY

SCHNEIDER ELECTRIC IT COR...

1. A power device comprising:
an input configured to be coupled to an AC power source and to receive input AC power from the AC power source;
power circuitry coupled to the input;
a plurality of outlets each configured to provide output AC power to a load derived from the input AC power;
a network module configured to be coupled to a network;
a controller coupled to the plurality of outlets, the power circuitry and the network module, the controller configured to:
operate the power circuitry to provide a portion of the input AC power to each one of the plurality of outlets;
provide a management interface to a management system via the network module and the network, the management interface configured
to allow an operator to provide an indication of whether a first outlet of the plurality of outlets is coupled to a network
based piece of equipment or a non-network based piece of equipment;

determine, based on the indication, whether the first outlet of the plurality of outlets is coupled to a network based piece
of equipment or a non-network based piece of equipment;

display via the management interface, in response to determining that the first outlet of the plurality of outlets is coupled
to a network based piece of equipment, a first functionality option appropriate for a network based piece of equipment; and

display via the management interface, in response to determining that the first outlet of the plurality of outlets is coupled
to a non-network based piece of equipment, a second functionality option appropriate for a non-network based piece of equipment.

US Pat. No. 9,791,219

METHOD OF FABRICATING A HEAT SINK

SCHNEIDER ELECTRIC IT COR...

1. A method for fabricating a straight fin heat sink of the type comprising a base and a plurality of fins extending from
the base, each fin of the plurality of fins being spaced from one another a predetermined distance and lying along a plane
parallel to planes of the other fins of the plurality of fins, the method comprising:
providing a die configured to produce a heat sink having a base and a plurality of fins attached to the base in a radial fashion
about the base from at least one side of the base;

extruding a blank of material through the die to produce the heat sink; and
compressing the plurality of fins with a compression tool so that the plurality of fins extend from the base along planes
parallel to each other,

wherein compressing the plurality of fins with a compression tool includes
providing a compression tool having a plurality of slots that extend from a first end of the compression tool to a second,
opposite end of the compression tool, the plurality of slots at the first end of the compression tool being configured to
receive the plurality of fins of the heat sink therein, and

sliding the plurality of fins of the heat sink through the slots of the compression tool.

US Pat. No. 9,772,355

BUSBAR CURRENT SENSOR

SCHNEIDER ELECTRIC IT COR...

1. A Power Distribution Unit (PDU) comprising:
an input configured to be coupled to a power source and to receive input power;
a busbar coupled to the input at a first location on the busbar, the bus bar having a resistance;
at least one power outlet coupled to a second location on the busbar via a first output line and configured to provide output
power to a load; and

a sensing circuit coupled proximate to the first location on the busbar and coupled proximate to the second location on the
busbar and configured to determine a voltage drop between the first location and the second location and to calculate a magnitude
of an output current provided to the at least one power outlet via the output line based on the voltage drop and the resistance
of the busbar,

wherein the sensing circuit includes a first amplifier coupled proximate to the first location via a first sense line and
proximate to the second location via a second sense line, and a second amplifier coupled proximate to the first location via
the first sense line and proximate to the third location via a third sense line, the first amplifier configured to receive
a first voltage signal and a second voltage signal and to measure the voltage drop between the first location and the second
location based on a difference between the first voltage signal and the second voltage signal, and

wherein the at least one power outlet includes a first power outlet coupled to the second location on the busbar via the first
output line and a second power outlet coupled to a third location on the busbar via a second output line.

US Pat. No. 10,114,037

SYSTEMS AND METHODS FOR CURRENT AND VOLTAGE MONITORING

SCHNEIDER ELECTRIC IT COR...

1. A cable, comprising; a plug at a first end of the cable; a socket at a second end of the cable; first and second conductors extending from the plug to the socket; a current and voltage, monitoring module coupled to the first and the second conductors and configured to measure current and voltage levels of the conductors; a transceiver coupled to the current and voltage monitoring, module, configured to receive data related to the current and voltage levels and transmit the data related to the current and voltage levels; and a housing configured to house the current and voltage monitoring module, the transceiver, and one of the socket and the plug, wherein the current and voltage monitoring module is configured to cycle between a sleep mode and a wake mode, and in a first wake mode cycle determine if received data related to current and voltage levels has changed by a predetermined amount, and in response to the change in current and voltage levels being over the predetermined amount, provide the received data to the transceiver for transmission by the transceiver in a next wake mode cycle.

US Pat. No. 10,103,570

UNINTERRUPTIBLE POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply, comprising:a first input configured to receive input power having three phases;
a second input configured to receive Direct Current (DC) backup power from a backup power source;
an output configured to provide output power;
power conversion circuitry coupled with the first input, the second input, and the output, the power conversion circuitry configured to provide the output power derived from at least one of the input power and the DC backup power to the output;
one or more sensors configured to monitor one or more parameters related to the output power; and
a controller coupled with the power conversion circuitry and the one or more sensors, the controller configured to:
receive, from the one or more sensors, values for the one or more parameters;
determine that a value of at least one of the one or more parameters is greater than a second threshold; and
based on the comparison, select three as the number of phases of the input power for receiving power for the power conversion circuitry.

US Pat. No. 9,931,591

METHOD AND SYSTEM FOR DETECTING DUST ACCUMULATION IN A HVAC FILTERING SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. A capacitive sensor system for detecting accumulation of dust in a filter of a HVAC system, the sensor system comprising:a first conductive mesh;
a second conductive mesh;
a first filter media disposed between the first conductive mesh and the second conductive mesh; and
a circuit configured to measure a capacitance of a first capacitive sensor formed by the first conductive mesh, second conductive mesh, and the first filter media and to translate a measured capacitance to a dust level indicator frequency that is used to determine a frequency corresponding to level of dust.

US Pat. No. 9,880,205

MINIMIZING BLIND SPOTS IN A SENSOR NETWORK

SCHNEIDER ELECTRIC IT COR...

1. A system for monitoring a plurality of circuit branches coupled to at least one input line of a load center, the system
comprising:
a plurality of first current sensors, each configured to be coupled to one of the plurality of circuit branches and to produce
a first reference signal having a level related to a current level of the one of the plurality of circuit branches;

at least one second current sensor configured to be coupled to the at least one input line and to produce a second reference
signal having a level related to a current level of the at least one input line;

a controller;
a plurality of first sensor circuits, each coupled to an associated one of the plurality of first current sensors and configured
to be coupled to the controller, wherein each one of the plurality of first sensor circuits is further configured, in a first
mode of operation, to sample the first reference signal from the associated one of the plurality of first current sensors,
and in a second mode of operation, to be powered off; and

at least one second sensor circuit coupled to the at least one second current sensor and configured to be coupled to the controller,
wherein the at least one second sensor circuit is further configured to sample the second reference signal from the at least
one second current sensor and provide, based on the sampling, an input line current measurement signal to the controller,

wherein the controller is configured to operate each one of the plurality of first sensor circuits in one of the first mode
of operation and the second mode of operation based on the input line current measurement signal received from the at least
one second sensor circuit.

US Pat. No. 9,806,438

GROUND BRACKET FOR AN OUTLET OF A RACK POWER DISTRIBUTION UNIT AND RELATED METHOD

SCHNEIDER ELECTRIC IT COR...

1. An electronic device comprising:
a chassis;
a first outlet provided in the chassis, the first outlet having a first ground terminal;
a second outlet provided in the chassis, the second outlet being coupled to the power source and having a second ground terminal,
the second outlet being spaced from the first outlet;

a power source coupled to the first outlet; and
a ground bracket configured to connect the first ground terminal of the first outlet to the chassis to ground the first outlet
and to connect the first ground terminal of the first outlet to the second ground terminal of the second outlet to the chassis,

wherein the first outlet is disposed in a first raised portion of the chassis and the second outlet is disposed in a second
raised portion of the chassis, the bracket including a strip of metal configured to conform to a contour of the chassis including
the first raised portion and the second raised portion, the strip of metal including a horizontal segment configured to lie
along a bottom of the chassis and to ground the bracket to the chassis, a first vertical segment coupled to the first ground
terminal of the first outlet by a first curled tab, and a second vertical segment coupled to the second ground terminal of
the second outlet by a second curled tab.

US Pat. No. 9,790,701

CONTAINER BASED DATA CENTER SOLUTIONS

SCHNEIDER ELECTRIC IT COR...

1. A data center enclosure comprising:
a shipping container, having a length, a width, and a height, the length greater than the width and the length greater than
the height, and at least a first sidewall and a second sidewall, for housing electronic equipment enclosures in an interior
of the shipping container, the first sidewall and the second sidewall positioned along the length of the shipping container
and the first sidewall disposed opposite the second sidewall;

a first region in the interior of the shipping container, including the electronic equipment enclosures forming a row along
the length of the shipping container, the first region configured to receive cool gas and to expel heated gas;

a second region in the interior of the shipping container and configured to receive heated gas from the first region;
a barrier, having a length, a width, and a height, the length greater than the width and the length greater than the height,
the barrier positioned lengthwise in the interior of the shipping container between the first region and the second region
and configured to separate the first region and the second region;

an exhaust opening in the second region, disposed in the second sidewall and along the length of the shipping container, and
configured to allow heated gas to vent to outside of the shipping container; and

a cooling module disposed in a lengthwise side opening of the first sidewall along the length of the shipping container, configured
to draw gas from the outside of the shipping container, cool the gas, and supply the cool gas to the first region through
the lengthwise side opening.

US Pat. No. 9,728,895

BUSBAR CONNECTOR ASSEMBLY

SCHNEIDER ELECTRIC IT COR...

1. A busbar connector assembly comprising:
a dynamic head configured to be secured to one of a busbar and an electronic device;
a static head configured to be secured to the other of the busbar and the electronic device; and
a connector configured to flexibly secure the dynamic head and the static head so that the dynamic head is capable of moving
relative to the static head,

wherein the dynamic head includes a cone-shaped annular portion and two spaced apart bars secured to the annular portion and
configured to be secured to the busbar, and

wherein the annular portion has a cutout formed therein for ventilation.

US Pat. No. 10,072,901

INDIRECT EVAPORATOR COOLER HEAT EXCHANGER MANUFACTURING METHOD

SCHNEIDER ELECTRIC IT COR...

1. A method for constructing a module of a modular cooling unit, the method comprising:acquiring a plurality of tubes, each tube having a first end and a second end, an interior surface, an exterior surface, and a support member operatively connected to the interior surface; and
overmolding a first header onto at least a portion of the first ends of the plurality of tubes, the first header configured to have a plurality of parallel first slots, each slot of the parallel first slots configured to have an extended surface configured to receive and retain the first end of the tube, wherein overmolding allows the extended surfaces of the plurality of parallel first slots to form over the first ends of the plurality of tubes to create a watertight connection between the first header and the first ends of the plurality of tubes.

US Pat. No. 9,973,034

SYSTEMS AND METHODS FOR LOAD HARMONIC SUPPRESSION

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptable power supply (UPS) comprising:a first input constructed to receive input power from a first power source;
a second input constructed to receive input power from a second power source;
an output constructed to provide output alternating current (AC) power derived from at least one of the first power source and the second power source;
an inverter coupled to the first input, the second input, and the output and constructed to generate the output AC power; and
a controller coupled to the inverter and configured to:
to identify one or more harmonics in the output AC power;
generate an inverter reference signal; and
modulate the inverter reference signal to reduce harmonic distortion contributed by the one or more harmonics.

US Pat. No. 9,933,843

SYSTEMS AND METHODS FOR REDUCING ENERGY STORAGE REQUIREMENTS IN A DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A method for reducing a need for stored power in a backup mode of operation in a data center, comprising:associating, by a data center management system, a plurality of host servers with a plurality of uninterruptible power supplies, each of the plurality of host servers being associated with at least one of the plurality of uninterruptible power supplies from which the respective host server is configured to receive power;
receiving, by the data center management system, a first alert from a respective one of the plurality of uninterruptible power supplies indicating that the respective uninterruptible power supply is operating in a first mode, wherein the first mode includes deriving power from a stored energy source;
identifying, by the data center management system, at least one of the plurality of host servers, the at least one host server being configured to receive power from the respective uninterruptible power supply in the first mode;
establishing, by the data center management system, a network communication with the at least one host server;
identifying, by the data center management system, at least one virtual machine executing on the at least one host server;
instructing, by the data center management system via the network communication, the at least one virtual machine on the at least one host server to suspend execution;
receiving, by the data center management system, a second alert from the respective uninterruptible power supply indicating that the uninterruptible power supply is operating in a second mode,
wherein the second mode includes deriving power from one of a mains power source and a generator; and
instructing, by the data center management system via the network communication, the at least one virtual machine to resume execution.

US Pat. No. 9,876,680

ONE BUTTON CONFIGURATION OF EMBEDDED ELECTRONIC DEVICES

SCHNEIDER ELECTRIC IT COR...

1. A method of configuring one or more rack power distribution units in a data center comprising:
requesting device configuration information by the one or more rack power distribution units via a wireless protocol;
receiving the request at an update apparatus;
in response to receiving the request at the update apparatus, retrieving a configuration file at the update apparatus, wherein
the configuration file comprises a series of instructions for configuring the one or more rack power distribution units in
a default configuration;

receiving by the update apparatus, via the wireless protocol, neighboring device data for neighboring rack power distribution
units and updating a location field of the configuration file based on a configuration history of the neighboring rack power
distribution units with the update apparatus, with a machine learning process, wherein the location field includes row and
rack numbers that indicate a position of the one or more rack power distribution units relative to a position of the neighboring
rack power distribution units;

transmitting the configuration file from the update apparatus to the one or more rack power distribution units via the wireless
protocol; and

configuring the one or more rack power distribution units according to the configuration file.

US Pat. No. 9,780,591

ADAPTIVE BATTERY PACK

SCHNEIDER ELECTRIC IT COR...

1. An adaptive battery pack module comprising:
a Li-ion battery;
a low-voltage bus coupled to the Li-ion battery;
a bi-directional DC-DC converter coupled to the low-voltage bus;
a low-voltage output coupled to the low-voltage bus;
a high-voltage output; and
a high-voltage bus coupled between the bi-directional DC-DC converter and the high-voltage output,
wherein the low-voltage output is configured to be coupled to at least one Li-ion battery of at least one external battery
pack module and to provide DC power from the Li-ion battery to the at least one external battery pack module, and

wherein the bi-directional DC-DC converter is configured to receive DC power from the Li-ion battery and the at least one
Li-ion battery of the at least one external battery pack module via the low-voltage bus, convert the received DC power into
output DC power, and provide the output DC power to the high-voltage bus.

US Pat. No. 9,772,380

CIRCUIT BREAKER SENSOR

SCHNEIDER ELECTRIC IT COR...

1. A dedicated circuit breaker fault monitor sensor for use in a panelboard including a plurality of circuit breakers, the
dedicated circuit breaker fault monitor sensor comprising:
a housing having a top portion and a bottom portion;
a magnet coupled to the bottom portion and configured to magnetically couple the dedicated circuit breaker fault monitor sensor
to a surface of the panelboard;

an accelerometer coupled to the magnet and configured to sample movement of the surface via the magnet; and
a controller coupled to the accelerometer and configured to analyze surface movement samples taken by the accelerometer and
determine, based on the analysis of the surface movement samples taken by the accelerometer, that one of the plurality of
circuit breakers in the panelboard has tripped.

US Pat. No. 9,996,659

SYSTEM AND METHOD FOR ARRANGING EQUIPMENT IN A DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for providing a layout of equipment in a data center, the equipment including a plurality of equipment racks, and at least one cooling provider, the method comprising:receiving data regarding airflow consumption for each of the plurality of equipment racks and cooling capacity of the at least one cooling provider;
storing the received data;
determining a layout of the data center; and
displaying the layout of the data center, wherein determining the layout includes:
pairing each equipment rack of the plurality of equipment racks with another equipment rack of the plurality of equipment racks based on airflow consumption of each of the plurality of equipment racks to create a plurality of pairs of equipment racks such that a greatest airflow consuming equipment rack is paired with a least airflow consuming equipment rack, a second greatest airflow consuming equipment rack is paired with a second least airflow consuming rack, and a third greatest airflow consuming equipment rack is paired with a third least airflow consuming rack; and
arranging the plurality of pairs of equipment racks to form a two-row cluster of equipment racks based on the airflow consumption of each of the plurality of equipment racks wherein each pair of the plurality of pairs of equipment racks includes an equipment rack in a first row of the cluster and an equipment rack in a second row of the cluster.

US Pat. No. 9,880,929

SYSTEMS AND METHODS FOR GENERATING A UNIQUE DEVICE ID

SCHNEIDER ELECTRIC IT COR...

1. A device comprising:
a network interface;
a memory including random access memory (RAM) and nonvolatile memory; and
at least one processor coupled to the nonvolatile memory, coupled to the RAM, and coupled to the network interface, the at
least one processor configured to:

designate an uninitialized section of RAM;
generate a network device identifier for the device using data from the uninitialized section of RAM;
store the network device identifier in a nonvolatile memory;
assign the network device identifier to the device;
generate a device address for the device;
receive an indication if a second device has been assigned the device address;
compare the device identifier to a second device identifier assigned to the second device in response to the received indication;
determine a relative priority between the device and the second device in response to the comparison; and
assign the device address to one of the device and the second device in response to the determination of relative priority.

US Pat. No. 9,778,718

POWER SUPPLY AND DATA CENTER CONTROL

SCHNEIDER ELECTRIC IT COR...

1. A method of data center power supply control, the method executing on a computer including a processor and a memory, the
method comprising:
identifying, by the processor, a parameter of at least one of a plurality of servers that form at least part of a data center;
identifying an estimated power draw of a virtual server and an estimated cooling requirement of the virtual server;
determining an estimated power distribution from each phase of a plurality of phases of one or more polyphase power supplies
to the plurality of servers;

determining a phase balance between the plurality of phases based on the estimated power distribution from each phase of the
plurality of phases;

identifying a cooling capacity of a cooling unit;
selecting one of the plurality of servers based at least in part on the parameter, the estimated power draw, the estimated
cooling requirement, the phase balance between the plurality of phases, and the cooling capacity;

generating a power request based at least in part on the estimated power draw;
providing the virtual server to the selected server;
adjusting an output of the cooling unit to the selected server based at least in part on the estimated cooling requirement;
and

adjusting the one or more polyphase power supplies to adjust power provided to at least one of the plurality of servers responsive
to the power request.

US Pat. No. 9,774,263

POWER CONVERTER WITH EXTENDED HOLD-UP TIME

SCHNEIDER ELECTRIC IT COR...

1. An AC-DC converter system comprising:
an input configured to receive input AC power from an AC source;
an output configured to provide output DC power having an output DC voltage to a load;
a rectifier coupled to the input;
a capacitor coupled to the rectifier; a DC bus coupled to the capacitor;
a plurality of first switches coupled to the DC bus;
a plurality of second switches coupled between the rectifier and the plurality of first switches;
a transformer having a primary winding and a secondary winding, the primary winding coupled to the plurality of first switches,
the plurality of second switches, and the rectifier, and the secondary winding coupled to the output; and

a controller configured to monitor the input AC power and, in response to a determination that the input AC power is acceptable,
to: operate the plurality of second switches and the plurality of first switches such that the output DC voltage is maintained
at a desired output DC voltage level; and

operate the plurality of first switches such that a DC bus voltage on the DC bus is maintained at a desired DC bus voltage
level,

wherein in operating the plurality of second switches and the plurality of first switches such that the output DC voltage
is maintained at the desired output DC voltage level, the controller is further configured to operate the plurality of second
switches and the plurality of first switches in a complementary manner.

US Pat. No. 9,923,415

DYNAMIC DC LINK VOLTAGE CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system, the UPS system comprising:
an input configured to receive input AC power;
an output configured to provide output AC power to a load;
a converter coupled to the input and configured to convert the input AC power into DC power;
a DC bus coupled to the converter and configured to receive the DC power;
an inverter coupled to the DC bus and configured to convert the DC power from the DC bus into output AC power and provide
the output AC Power to the output; and

a controller configured to receive an output AC output voltage level selection from a user, operate the inverter to generate
the output AC power having an AC voltage level based on the output AC output voltage level selection, and operate the converter
to generate the DC power having a DC voltage level based on the output AC output voltage level selection.

US Pat. No. 9,793,753

POWER QUALITY DETECTOR

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply, comprising:
an input configured to receive input power;
one or more sensors configured to monitor one or more parameters related to the input power;
an output;
a power conversion circuit coupled with the input and the output;
a bypass switch configured to couple the input to the output in a bypass mode of operation, and to decouple the input from
the output in a double conversion mode of operation and in a backup mode of operation; and

a controller coupled with the power conversion circuit and the bypass switch, the controller configured to:
receive, from the one or more sensors, values for a plurality of parameters;
filter the values to determine a plurality of quality metrics;
calculate, based on the quality metrics, a quality measure of the input power and compare the quality measure with a first
threshold; and

control the bypass switch to switch from bypass mode of operation decoupling the input from the output, and control the power
conversion circuit to operate in double conversion mode of operation based on the comparison of the quality measure with the
first threshold.

US Pat. No. 9,762,578

METHODS AND SYSTEMS FOR ESTABLISHING SECURE AUTHENTICATED BIDIRECTIONAL SERVER COMMUNICATION USING AUTOMATED CREDENTIAL RESERVATION

SCHNEIDER ELECTRIC IT COR...

1. A method of authenticating communications, the method comprising acts of:
receiving, by a computer, a first set of credentials;
verifying the first set of credentials by comparing the first set of credentials to a plurality of sets of credentials stored
in a database;

subsequent to verifying the first set of credentials, creating a second set of credentials by the computer;
transmitting the second set of credentials to a remote computer;
receiving, by the computer, the second set of credentials from the remote computer; providing, by the computer to the remote
computer, unsolicited access to services provided by the computer responsive to receiving the second set of credentials, the
services being configured to receive events posted to the computer by the remote computer; and

in response to at least one event, automatically changing at least one of the first set of credentials and the second set
of credentials using the at least one of the first set of credentials and the second set of credentials as a seed for determining
a new set of credentials to replace the at least one of the first set of credentials and the second set of credentials.

US Pat. No. 10,256,065

SYSTEMS AND METHODS FOR CONTROLLING RELAYS

SCHNEIDER ELECTRIC IT COR...

1. A relay control circuit configured for use with a plurality of relays including a first relay and a second relay, the first relay having a first coil voltage input and the second relay having a second coil voltage input coupled to the first coil voltage input of the first relay, the first relay being coupled to ground through a first switch, and the second relay being coupled to the ground through a second switch, the relay control circuit comprising:a first input to receive a first voltage capable of energizing the first relay from a de-energized state in response to a first relay control signal having a first state that couples the first relay to the ground through the first switch, the first relay control signal also having a second state;
a second input to receive a second voltage capable of maintaining the first relay in an energized state in response to the first relay control signal having the first state, the second voltage being less than the first voltage;
a third switch disposed in series between the first input and the first coil voltage input, the third switch having a control input to receive a control signal that electrically couples the first input to the first coil voltage input in response to the control signal having a first state and that electrically decouples the first input from the first coil voltage input in response to the control signal having a second state;
a first diode electrically coupled in series between the second input and the first coil voltage input;
a pulse generator having an input to receive the first relay control signal and an output electrically coupled to the control input of the third switch, the pulse generator being configured to output the control signal having the first state for a period of time in response to the first relay control signal having the first state;
a second diode having an anode to receive the first relay control signal and a cathode electrically coupled to the input of the pulse generator; and
a third diode having an anode to receive a second relay control signal having a first state that couples the second relay to the ground through the second switch and that is capable of energizing the second relay, and the second relay control signal having a second state that is not capable of energizing the second relay, the third diode having a cathode electrically coupled to the input of the pulse generator and coupled to the cathode of the second diode.

US Pat. No. 10,088,883

EXECUTING RESTRICTED COMMANDS ON AN UNINTERRUPTED POWER SUPPLY

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply (UPS) comprising:an input configured to receive input power;
a backup power source configured to provide backup power;
an output configured to provide output power from at least one of the input power and the backup power; and
a controller coupled to the input, the backup power source, and the output, the controller configured to:
receive commands from an external entity;
detect a configuration setting;
identify, based at least in part on the configuration setting, that a first subset of the commands are unrestricted commands and a second subset of the commands are restricted commands; and
responsive to identifying the restricted commands, execute the restricted commands on receipt of an authentication code at the UPS within a set time window.

US Pat. No. 9,973,077

DELTA CONVERSION RECTIFIER

SCHNEIDER ELECTRIC IT COR...

1. An AC-DC rectifier comprising:an input configured to be coupled to an AC power source and to receive input AC power from the AC power source having an input AC voltage waveform;
an output configured to provide output DC power to a load;
an active power filter coupled to the input;
a converter coupled to the input and configured to convert the input AC voltage waveform into an output AC voltage waveform at a desired magnitude;
a rectifier portion coupled between the converter and the output and configured to convert the output AC voltage waveform into the output DC power; and
a controller coupled to the input, the active power filter, and the converter and configured to operate the active power filter to provide Power Factor Correction (PFC) at the input, to operate the converter to provide the output AC voltage waveform at the desired magnitude to the rectifier portion, and to monitor a magnitude of the input AC voltage waveform and compare the magnitude of the input AC voltage waveform to the desired magnitude of the output AC voltage waveform,
wherein the controller is further configured to operate the converter in a buck mode of operation in response to a determination that the magnitude of the input AC voltage waveform is greater than the desired magnitude of the output AC voltage waveform.

US Pat. No. 9,941,738

DYNAMIC DC LINK VOLTAGE CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system, the UPS system comprising:an input configured to receive input AC power;
an output configured to provide output AC power to a load;
a converter coupled to the input and configured to convert the input AC power into DC power;
a DC bus coupled to the converter and configured to receive the DC power;
an inverter coupled to the DC bus and configured to convert the DC power from the DC bus into output AC power and provide the output AC Power to the output; and
a controller configured to receive an output AC output voltage level selection from a user, operate the inverter to generate the output AC power having an AC voltage level based on the output AC output voltage level selection, and operate the converter to generate the DC power having a DC voltage level based on the output AC output voltage level selection.

US Pat. No. 9,905,384

SYSTEMS AND METHODS FOR QUICK RELEASE ELECTROMAGNETIC RELAYS

SCHNEIDER ELECTRIC IT COR...

1. An electromagnetic relay comprising:
a first port and a second port;
a first coil and a second coil;
a movable armature coupled between the first port and the second port, the movable armature having a first state that connects
the first port to the second port and a second state that disconnects the first port from the second port;

a switch circuit coupled to the first coil, the switch circuit having a first state constructed to connect the first coil
to an external power source to induce the first coil to create a first magnetic field having a first direction and a second
state constructed to disconnect the first coil from the external power source; and

a coil control circuit coupled to the first coil and the second coil and constructed to induce the second coil to create a
second magnetic field having a second direction responsive to the switch circuit being in the second state, the second direction
being opposite the first direction.

US Pat. No. 9,871,409

LPS ARCHITECTURE FOR UPS SYSTEMS

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system, the UPS comprising:
a transformer including:
a first primary winding configured to be coupled to a DC power source;
a second primary winding configured to be coupled to an AC power source; and
at least one secondary winding;
control logic coupled to the first primary winding and the second primary winding; and
at least one output line coupled to the at least one secondary winding,
wherein the control logic is configured, in a first mode of operation, to enable the first primary winding to generate, based
on power received from the DC power source, a first output voltage at the at least one output line, and to disable the second
primary winding, and

wherein the control logic is configured, in a second mode of operation, to enable the second primary winding to generate,
based on power received from the AC power source, a second output voltage at the at least one output line, and to disable
the first primary winding.

US Pat. No. 9,837,855

UNINTERRUPTIBLE POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) comprising:
a first input configured to be coupled to an AC source and to receive input power;
a second input configured to be coupled to a backup power source to receive backup power;
an output configured to be coupled to a load and to provide output AC power to the load derived from at least one of the input
power and the backup power;

a bypass line selectively coupled between the first input and the output via a bypass switch, wherein the bypass switch is
configured to close in a first mode of operation, coupling the first input of the UPS to the output of the UPS via the bypass
line, and to open in a second mode of operation, decoupling the first input of the UPS from the output of the UPS;

an inverter comprising an input configured to receive at least one of the input power and the backup power and an output selectively
coupled to the output of the UPS via an inverter switch, wherein the inverter switch is configured to close in the second
mode of operation, coupling the output of the inverter to the output of the UPS, and to open in the first mode of operation,
decoupling the output of the inverter from the output of the UPS; and

an inverter controller coupled to the inverter and to the bypass line, wherein the inverter controller is configured, in the
second mode of operation, to monitor current in the bypass line and, in response to a determination that the current in the
bypass line is greater than a threshold level, to operate the inverter to provide current to the output of the UPS having
a direction opposite to a direction of the current in the bypass line.

US Pat. No. 9,979,218

LPS ARCHITECTURE FOR UPS SYSTEMS

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system, the UPS system comprising:an input configured to be coupled to an AC power source;
a transformer including:
at least one primary winding configured to be coupled to a DC power source; and
at least one secondary winding;
a relay configured to selectively couple the input to the at least one primary winding;
a sense circuit coupled to the input and the relay;
a current control circuit coupled to the at least one primary winding; and
at least one output line coupled to the at least one secondary winding,
wherein the sense circuit is configured to monitor a level of input AC power at the input, determine whether the level of input AC power is above an input power threshold level, control the relay to couple, in a first mode of operation of the UPS, the input to the at least one primary winding in response to a determination that the input AC power is above the input power threshold level, and control the relay to decouple, in a second mode of operation of the UPS, the input from the at least one primary winding in response to a determination that the input AC power is below the input power threshold level, and
wherein the current control circuit is configured, in the first mode of operation of the UPS, to control current from the AC power source through the at least one primary winding to generate an output voltage at the at least one output line and, in the second mode of operation of the UPS, to control current from the DC power source through the at least one primary winding to generate the output voltage at the at least one output line.

US Pat. No. 9,979,313

3-LEVEL POWER TOPOLOGY

SCHNEIDER ELECTRIC IT COR...

13. A method for operating a power supply system, the power supply system comprising an input, a converter coupled to the input, a first DC bus coupled to the converter, an inverter coupled to the first DC bus, an energy storage device, and an output, the method comprising:receiving, at the input, input AC power from a power source;
converting, with the converter, the input AC power into converted DC power;
providing the converted DC power to the first DC bus;
converting, with the inverter, DC power from the first DC bus into output AC power;
providing the output AC power to the output; and
controlling the power supply system such that voltage on the first DC bus goes to zero to provide Zero Voltage Switching (ZVS) in the converter and the inverter, the controlling including selectively decoupling the energy storage device from the first DC bus.

US Pat. No. 9,793,729

UNINTERRUPTIBLE POWER SUPPLY HAVING REMOVABLE BATTERY

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply (UPS) comprising:
a battery contained within a battery housing, the battery having at least one battery module within the battery housing and
configured to provide battery power, the battery housing having a first connector mounted on the battery housing;

a UPS housing having a battery compartment for removably containing the battery housing of the battery, the UPS housing having
a second connector mounted within the battery compartment, the second connector being configured to mate with the first connector;

a first input configured to receive input power from an AC power source; and
at least one output configured to provide output AC power derived from the input power in a first mode of operation and configured
to provide output power derived from the at least one battery module in a second mode of operation;

wherein the battery housing has a third connector configured to be coupled to a mobile device to provide power to the mobile
device, the battery being configured to charge the mobile device coupled to the third connector when the battery housing of
the battery is disposed within the UPS housing and when the battery housing of the battery is removed from the battery compartment
of the UPS housing.

US Pat. No. 10,212,851

DATA CENTER AIR DUCT SYSTEM

SCHNEIDER ELECTRIC IT COR...

1. An air duct system configured to be used with an air containment system that spans an aisle defined by rows of racks, the air duct system comprising:a plurality of ceiling panels supported by the air containment system, each ceiling panel of the plurality of ceiling panels spanning the aisle;
a plurality of spaced apart support curbs mounted on the ceiling panels, the plurality of support curbs being configured to support a duct positioned on the support curbs; and
a plurality of panels secured to the support curbs to create a plenum underneath the duct, wherein the plenum extends along the plurality of support curbs,
wherein the plenum and the duct extend longitudinally along a length of the aisle above the aisle, the plenum being configured to enable airflow between the duct and the aisle,
wherein each support curb is a curved structure and is positioned to straddle two adjacent ceiling panels; and
wherein each ceiling panel includes at least one opening to enable air to flow between the plenum and the aisle.

US Pat. No. 10,102,313

RAISED FLOOR PLENUM TOOL

SCHNEIDER ELECTRIC IT COR...

1. A method for use with a raised floor data center, comprising:receiving input data, including at least one data center design parameter related to the raised floor and a plenum located below the raised floor, the at least one data center design parameter including perforated tile type, raised floor construction, and raised floor cutouts;
determining tile airflow uniformity using the input data and at least one empirical correlation;
implementing an analytical model to determine airflow distribution through each of the perforated tiles, the raised floor, and the raised floor cutouts, wherein implementing the analytical model includes solving, based on the input data, a plurality of equations that include a first equation associated with airflow values through the perforated tiles, a second equation associated with airflow leakage values through the raised floor, and a third equation associated with airflow leakage values through the raised floor cutouts;
using the tile airflow uniformity and the airflow distribution to evaluate airflow in a data center design; and
altering one or more operating parameters of at least one of a cooling device and one or more equipment racks positioned in the data center based on the airflow evaluation.

US Pat. No. 10,003,200

DECENTRALIZED MODULE-BASED DC DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A distributed power system comprising:a DC bus configured to be coupled to at least one first external DC load;
at least one DC UPS having a first input configured to be coupled to an AC power source and to receive input AC power from the AC power source, a second input configured to be coupled to a backup power source and to receive backup DC power from the backup power source, and an output configured to be coupled to the DC bus, the at least one DC UPS configured to provide DC power to the DC bus derived from at least one of the input AC power and the backup DC power such that a DC voltage on the DC bus is maintained at a nominal level; and
at least one power module configured to be coupled to an energy storage device and to the DC bus, to monitor the DC voltage on the DC bus, to convert DC power from the energy storage device into regulated DC power, and to provide the regulated DC power to the DC bus in response to a determination that the DC voltage on the DC bus is less than a threshold level,
wherein in response to a determination that the DC voltage on the DC bus is greater than the threshold level, the at least one power module is further configured to convert DC power from the DC bus into regulated DC power, and to provide the regulated DC power to the energy storage device to charge the energy storage device; and
wherein the at least one power module includes:
a first power module configured to be coupled to a first type of energy storage device and to the DC bus, to monitor the DC voltage on the DC bus, to convert DC power from the first type of energy storage device into regulated DC power, and to provide the regulated DC power to the DC bus in response to a determination that the DC voltage on the DC bus is less than a first threshold level; and
a second power module configured to be coupled to a second type of energy storage device and to the DC bus, to monitor the DC voltage on the DC bus, to convert DC power from the second type of energy storage device into regulated DC power, and to provide the regulated DC power to the DC bus in response to a determination that the DC voltage on the DC bus is less than a second threshold level.

US Pat. No. 9,970,719

WATER COLLECTION SYSTEM FOR INDIRECT EVAPORATIVE COOLER

SCHNEIDER ELECTRIC IT COR...

1. A water collection system for an indirect evaporative cooler, the water collection system comprising:a housing having a front wall, a back wall, and two end walls, which together define an interior region of the housing;
a plurality of tube assemblies each extending through one of the front wall and the back wall of the housing and disposed within the interior region of the housing; and
a plurality of panel assemblies disposed within the interior region of the housing above the plurality of tube assemblies, each panel assembly being associated with a respective tube assembly to channel fluid to the tube assembly, each panel assembly including two molded panels adhered to on opposite sides of a flat center panel.

US Pat. No. 9,973,036

AUTOMATIC SUB-MILLISECOND CLOCK SYNCHRONIZATION

SCHNEIDER ELECTRIC IT COR...

1. A system for monitoring a plurality of circuit branches coupled to an input line, the system comprising:a communication bus;
a controller having a primary clock with a first clock value, the controller configured to be coupled to the communication bus and the input line and further configured to sample voltage on the input line based on the first clock value;
a plurality of sensor circuits, each sensor circuit having a secondary clock with a second clock value and each sensor circuit configured to be coupled to the communication bus and at least one of the plurality of circuit branches, wherein each sensor circuit is further configured to sample current in the at least one of the plurality of circuit branches based on the second clock value; and
wherein the controller is further configured to initiate, via the communication bus, synchronization of at least one secondary clock and the primary clock, and to synchronize, via the communication bus, the at least one secondary clock and the primary clock to account for transmission latency in the communication bus,
wherein in synchronizing the at least one secondary clock and the primary clock, the controller is further configured to:
calculate at least one Return Trip Time (RTT) from the controller to at least one of the plurality of sensor circuits having the at least one secondary clock; and
transmit at least one synchronization signal from the controller to the at least one of the plurality of sensor circuits to adjust the second clock value of the at least one secondary clock based on the at least one RTT.

US Pat. No. 9,952,103

ANALYSIS OF EFFECT OF TRANSIENT EVENTS ON TEMPERATURE IN A DATA CENTER

SCHNEIDER ELECTRIC IT COR...

1. A computer-implemented method for evaluating cooling performance of equipment in a data center, the equipment including a plurality of equipment racks and at least one cooling provider, the method comprising:receiving data related to types of equipment and an arrangement of equipment in the data center;
determining first parameters related to airflow and parameters related to temperature in the data center at a first period in time, the first parameters related to airflow including a fraction of airflow from a rack which is captured by a cooling source and a fraction of the rack's inlet airflow which originated from the cooling source;
receiving a description of a transient event affecting one of airflow and temperature in the data center and occurring at a second time subsequent to the first period in time, the transient event including failure of the at least one cooling provider;
breaking a second time period subsequent to the second time into a plurality of time intervals;
determining second parameters related to airflow in the data center during one of the plurality of time intervals, the second parameters related to airflow including the fraction of airflow from the rack which is captured by the cooling source and the fraction of the rack's inlet airflow which originated from the cooling source;
determining the parameters related to temperature in the data center at each of the plurality of time intervals based on the second parameters related to airflow;
storing, on a storage device, a representation of the parameters related to temperature in the at least a portion of the data center during the second time period; and
one of controlling one or more computer room air conditioners (CRACs) to adjust airflow in the data center and controlling one or more equipment racks in the data center to reduce power based on the determined second parameters related to airflow if the airflow is not adequate to provide sufficient cooling.

US Pat. No. 9,859,665

HIGH VOLTAGE AND HIGH CURRENT POWER OUTLET

SCHNEIDER ELECTRIC IT COR...

1. A power distribution device including at least one power outlet, the at least one power outlet comprising:
a housing;
at least one receptacle within the housing, the at least one receptacle including an internal conductor configured to be coupled
to a power source and to an external conductor inserted into the at least one receptacle;

a switch within the housing, the switch configured to provide an indication of whether the external conductor has been inserted
at least to a predetermined point within the at least one receptacle;

a relay configured to be selectively coupled between the external conductor and the power source to form a first connection
between the external conductor and the power source;

a transistor configured to be coupled between the external conductor and the power source, in parallel with the relay, to
form a second connection between the external conductor and the power source; and

a controller coupled to the relay, the transistor, and the switch, wherein the controller is configured to:
determine, based on the indication from the switch, that the external conductor is being removed from the at least one receptacle,
in response to the determination that the external conductor is being removed from the at least one receptacle, control the
relay to open and sever the first connection,

in response to opening the relay, control the transistor to turn off after a predetermined transistor delay and sever the
second connection,

determine, based on the indication from the switch, that the external conductor is being inserted into the at least one receptacle;
in response to the determination that the external conductor is being inserted into the at least one receptacle, control the
transistor to turn on and provide power from the power source to the external conductor via the second connection; and

in response to turning on the transistor, control the relay to close after a predetermined relay delay and provide power from
the power source to the external conductor via the first connection.

US Pat. No. 10,075,015

MAINTENANCE TRANSFER SWITCH

SCHNEIDER ELECTRIC IT COR...

1. An automatic transfer switch comprising:a plurality of power input connectors;
a plurality of power output connectors; and
at least one electrical switch configured to selectively electrically connect at least one of the plurality of power input connectors to at least one of the plurality of power output connectors, the at least one electrical switch including:
a plurality of electrical inputs in electrical communication with a first of the plurality of power input connectors;
a plurality of electrical inputs in electrical communication with a second of the plurality of power input connectors; and
a plurality of electrical outputs in electrical communication with a first of the plurality of power output connectors.

US Pat. No. 10,054,324

CLOSE HUMIDITY AND TEMPERATURE CONTROL METHOD

SCHNEIDER ELECTRIC IT COR...

1. A humidity and temperature control system comprising:a temperature sensor configured to measure an air temperature value;
a humidity sensor configured to measure an air humidity value;
at least one unit configured to cool, heat, dehumidify, and humidify air, the at least one unit including a variable speed compressor, a heater, and a humidifier; and
a control module in communication with the temperature sensor and the humidity sensor, the control module comprising:
a first PID temperature controller configured to:
receive a set point temperature value;
receive a measured air temperature value from the temperature sensor;
calculate a difference between the set point temperature value and the measured air temperature value to determine a temperature error value; and
a second PID humidity controller configured to:
receive a set point humidity value;
receive a measured air humidity value from the humidity sensor;
calculate a difference between the set point humidity value and the measured humidity value to determine a humidity error value; and
wherein the temperature error value corresponds to a normalized temperature error value and the humidity error value corresponds to a normalized humidity error value and the control module is configured to;
determine which of the normalized temperature error value and the normalized humidity error value is greater;
control operation of the humidifier if the normalized humidity error value is greater than the normalized temperature error value and the normalized humidity error value is less than zero;
control operation of the compressor if the normalized humidity error value is greater than the normalized temperature error value and the normalized humidity error value is greater than zero;
control operation of the compressor if the normalized temperature error value is greater than the normalized humidity error value and the normalized temperature error value is greater than zero; and
control operation of the heater if the normalized temperature error value is greater than the normalized humidity error value and the normalized temperature error value is less than zero.

US Pat. No. 9,952,184

ULTRASONIC MONITORING OF ELECTRICAL CONNECTIONS

SCHNEIDER ELECTRIC IT COR...

1. An electrical connection sensor comprising:at least one transducer configured to be coupled to a power distribution block, to generate ultrasonic pulses in the power distribution block, and to receive ultrasonic signals based on the ultrasonic pulses; and
a controller coupled to the at least one transducer and configured to determine a status of at least one electrical connection in the power distribution block based on at least one characteristic of the ultrasonic signals received by the at least one transducer,
wherein the ultrasonic signals received by the at least one transducer include a series of reflections from the at least one electrical connection in the power distribution block, and
wherein in determining the status of the at least one electrical connection, the controller is further configured to determine a round trip time of at least one of the series of reflections and determine the status of the at least one electrical connection based on the round trip time of the at least one of the series of reflections.

US Pat. No. 10,143,105

RE-USABLE MODULAR SKID ASSEMBLY FOR SHIPPING ELECTRONIC MODULES

SCHNEIDER ELECTRIC IT COR...

1. A modular skid assembly configured to transport at least one modular electrical component, the modular skid assembly comprising:a plate including an upper surface configured to support the at least one modular electrical component;
a first side beam extending longitudinally along one side of the plate, the first side beam being secured to the plate;
a second side beam extending longitudinally along an opposite side of the plate, the second side beam being secured to the plate;
a plurality of joists extending laterally beneath the plate, the plurality of joists extending between the first side beam and the second side beam;
a first shipping beam configured to be releasably secured to the first side beam; and
a second shipping beam configured to be releasably secured to the second side beam;
wherein a lower flange of the first shipping beam extends laterally in an opposite direction to a lower flange of the first side beam, and a lower flange of the second shipping beam extends laterally in an opposite direction to a lower flange of the second side beam.

US Pat. No. 10,244,664

CONTAINER AIR HANDLING UNIT AND COOLING METHOD

SCHNEIDER ELECTRIC IT COR...

1. A modular cooling system to treat IT air generated by a data center, the modular cooling system comprising:an ISO container;
a supply duct coupled to the ISO container to deliver IT air to the data center from the ISO container;
a return duct coupled to the ISO container to deliver IT air to the ISO container from the data center;
a cooling sub-system module positioned within the ISO container, the cooling sub-system module configured to provide cooling within the data center, the cooling subsystem module comprising:
a housing configured to support cooling equipment,
an air-to-air heat exchanger supported by the housing to cool IT air supplied by the return duct from the data center, the air-to-air heat exchanger having at least one tube configured to direct IT air from one end of the air-to-air heat exchanger to an opposite end of the air-to-air heat exchanger and configured so that outdoor air circulates around at least one tube, where conditioned IT air is delivered by the supply duct to the data center, and
a mechanical cooling system supported by the housing, the mechanical cooling system being configured to receive IT air treated by the air-to-air heat exchanger and where the air-to-air heat exchanger has not sufficiently cooled the IT air, the mechanical cooling system is activated to provide further cooling, including a compressor provided at a bottom of the housing, a refrigerator condenser coil disposed directly above the air-to-air heat exchanger, and an evaporator coil located downstream from the air-to-air heat exchanger, the arrangement being such that IT air treated by the air-to-air heat exchanger travels through the evaporator coil and is directed to an outlet port in fluid communication with the supply duct; and
a fluid transfer system that interconnects the cooling sub-system to the ISO container to deliver fluid to and collect fluid from the cooling sub-system module.

US Pat. No. 10,072,865

SYSTEMS AND METHODS FOR MINIMIZING COMPRESSOR USE IN HVAC SYSTEMS

SCHNEIDER ELECTRIC IT COR...

1. A method of minimizing use of a compressor in an HVAC system for an IT space, the method comprises:configuring an HVAC system to cool an IT space;
providing a control system to operate the HVAC system, the control system having software configured to forecast a minimum achievable X-Factor during an economization mode for a future portion of a predetermined period of time along with tracking cumulative X-Factor for a past portion of the predetermined period of time, thereby identifying future time that must be augmented with compressor operation to achieve user selected X-Factor in aggregate over the predetermined period of time, the predetermined period of time having user selected start date, and user selected duration having an end date in the future;
providing at least one parameter to the control system, the at least one parameter including X-Factor history and period weather forecast(s);
setting temperature set points for each forecast interval;
analyzing the temperature set points according to maximum and minimum temperature parameters for the IT space, wherein first intervals which have set points which exceed the maximum temperature parameter are designated as intervals for which the compressor will operate, and wherein second intervals which have set points below the minimum temperature parameter are assigned the minimum temperature set point; and
activating the compressor during the first intervals which have set points which exceed the maximum temperature parameter.

US Pat. No. 10,148,123

UNINTERRUPTIBLE POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. An uninterruptible power supply, comprising:a first input configured to receive input power having three phases;
a second input configured to receive Direct Current (DC) backup power from a backup power source;
an output configured to provide output power;
power conversion circuitry coupled with the first input, the second input, and the output, the power conversion circuitry configured to provide the output power derived from at least one of the input power and the DC backup power to the output;
one or more sensors configured to monitor one or more parameters related to the output power; and
a controller coupled with the power conversion circuitry and the one or more sensors, the controller configured to:
receive, from the one or more sensors, values for the one or more parameters;
determine that a value of at least one of the one or more parameters is greater than a second threshold; and
based on the comparison, select three as the number of phases of the input power for receiving power for the power conversion circuitry.

US Pat. No. 10,135,251

APPARATUS AND METHOD FOR CONTROLLING A MICROGRID

SCHNEIDER ELECTRIC IT COR...

1. A method for controlling a microgrid comprising a power interface device coupled to a plurality of microgrid elements comprising power sources and loads, the method comprising:determining, by the power interface device, a mode of operation of the microgrid;
determining a power load of the plurality of microgrid elements; and
based on the mode of operation of the microgrid and the power load of the plurality of microgrid elements, adjusting, by the power interface device, a frequency of a voltage of the power interface device to communicate one or more instructions to at least one microgrid element of the plurality of microgrid elements.

US Pat. No. 10,110,011

METHODS AND APPARATUS FOR CONTROLLING POWER CONVERTERS IN PARALLEL CONNECTION

SCHNEIDER ELECTRIC IT COR...

17. A non-transitory computer-readable medium having instructions encoded thereon that, when acted upon by a processor, cause a power converter to operate with a non-zero imbalance current, according to a method comprising: establishing real-time feedback control so as to control a current supplied by the converter in accordance with a desired condition of supply; sensing in real time the imbalance current for the converter, the imbalance current representing an imbalance between an output current of the converter and output currents of other converters operating in parallel; and modifying said feedback control in response to the sensed imbalance current so as to steer the output current of the converter toward a value that is a predetermined non-zero proportion of a total electric current supplied to a load, the predetermined non-zero proportion being different for each converter having different nominal power ratings.

US Pat. No. 10,247,461

HYBRID POWERED COOLING UNIT

SCHNEIDER ELECTRIC IT COR...

1. An air conditioning system of a building, the air conditioning system comprising:a first power source comprising an electric motor;
a second power source comprising a natural gas powered internal combustion engine;
an electronic controller; and
a compressor disposed between the electric motor and the internal combustion engine selectively operated by the electric motor and the natural gas powered internal combustion engine responsive to an output of the electronic controller provided responsive to a preprogrammed selection criterion including one or more of time of day and relative cost of operating the compressor with the electric motor as compared to operating the compressor with the internal combustion engine,
the air conditioning system having an operating mode in which an electric motor clutch providing selective engagement of an output shaft of the electric motor with the compressor is disengaged and the compressor is operated by the natural gas powered internal combustion engine through an output shaft directly connecting the natural gas powered internal combustion engine to a combustion engine clutch and a second shaft directly connecting the combustion engine clutch to the compressor,
the electronic controller being configured to provide a signal to both the electric motor clutch and the combustion engine clutch to engage so the compressor is powered by both the internal combustion engine and the electric motor responsive to a cooling load of the air conditioning system requiring more power to be provided to drive operation of the compressor than could be provided by either the internal combustion engine or the electric motor alone.

US Pat. No. 10,218,217

UPS FOR MIXED AC AND DC LOADS

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) comprising:an input configured to be coupled to an AC source and to receive input AC power from the AC source;
a DC bus configured to be coupled to a DC source and to receive backup DC power from the DC source;
a first output configured to be coupled to at least one AC load and to provide output AC power having an output AC voltage to the at least one AC load derived from at least one of the input AC power and the backup DC power;
a second output configured to be coupled to at least one DC load and to provide output DC power having an output DC voltage to the at least one DC load derived from at least one of the input AC power and the backup DC power;
a first transformer having a first end of a primary winding coupled to the input, a second end of the primary winding coupled to the first output, and a secondary winding, the first transformer configured to provide at least a portion of the output AC power from the primary winding to the first output and to provide isolation between the input and the DC source;
a first bidirectional converter coupled between the DC bus and the first transformer, wherein the secondary winding of the first transformer is coupled between the primary winding and the first bidirectional converter;
a second bidirectional converter coupled between the DC bus and a second transformer, the second transformer coupled to the first output and configured to provide isolation between the first output and the second output; and
a controller configured to operate the second bidirectional converter to maintain the output AC voltage above a first threshold value and to operate the first bidirectional converter to maintain the output DC voltage above a second threshold.

US Pat. No. 10,218,577

SYSTEMS AND METHODS FOR MAPPING AND VISUALIZING A WIRELESS MESH NETWORK

SCHNEIDER ELECTRIC IT COR...

1. A system for mapping a mesh network, the system comprising:a memory; and
at least one processor coupled to the memory and configured to:
receive at least one network data packet from at least one network device in the mesh network, the at least one network data packet including information descriptive of a connection strength that includes a measured signal strength of a wireless received signal between the at least one network device and one or more other network devices in the mesh network;
build a map of the mesh network including a representation of the at least one network device using the signal strength information contained in the at least one network data packet;
display the map on a user interface, including a representation of the signal strength between the at least one network device and the one or more other network devices in the mesh network;
log the at least one network data packet;
detect, by analyzing information contained in the at least one network data packet, a change in the mesh network; and
issue an alert in response to the change.

US Pat. No. 10,211,750

APPARATUS AND METHOD FOR LOW FREQUENCY POWER INVERTER

SCHNEIDER ELECTRIC IT COR...

1. A DC-AC inverter comprising:an input configured to be coupled to a battery and to receive input DC power from the battery;
a DC-DC converter portion coupled to the input and configured to receive the input DC power;
an inverter portion coupled to the DC-DC converter portion;
an output coupled to the inverter portion and configured to be coupled to a load;
a clamp circuit coupled to the DC-DC converter portion, the clamp circuit including an energy storage device configured to be coupled to the load via the inverter portion; and
a controller coupled to the DC-DC converter portion, the clamp circuit, and the inverter portion, and configured to:
operate, in a first mode of operation, the DC-DC converter portion to convert the input DC power into DC power having a desired voltage level at a first polarity and the inverter portion to provide output power having the desired voltage level at the first polarity to the output;
operate, in a second mode of operation, the DC-DC converter portion to convert the input DC power into DC power having a desired voltage level at a second polarity and the inverter portion to provide output power having the desired voltage level at the second polarity to the output; and
operate, in a third mode of operation, the clamp circuit to drive voltage at the output to zero, to receive, via the inverter portion, energy discharged by a load capacitance at the load, and to store the energy discharged by the load capacitance in the energy storage device.

US Pat. No. 10,210,288

SYSTEMS AND METHODS OF VISUALIZING AIRFLOW

SCHNEIDER ELECTRIC IT COR...

1. A system comprising:a memory; and
a controller coupled to the memory and configured to:
receive data related to equipment including at least two of a group comprising a cooling consumer and a cooling provider;
compute quantities of airflow between an inlet and an outlet associated with the equipment;
generate a three-dimensional representation of each airflow path of a variety of airflow paths between the outlet and the inlet, the each three-dimensional representation having a cross-sectional area proportional to a quantity of airflow and is configured such that one airflow path of the variety of airflow paths does not cross one another airflow path of the variety of airflow paths, wherein each airflow path of the variety of airflow paths includes a representation of percentage of airflow;
display the three-dimensional representation of each airflow path of the variety of airflow paths in a cooling model; and
control equipment of the group based on the computed quantity of airflow.

US Pat. No. 10,208,769

COOLING RACK FAN MODULE AND METHOD OF COOLING

SCHNEIDER ELECTRIC IT COR...

1. A fan module for a cooling unit, the fan module comprising:a housing configured to be secured within the cooling unit, the housing having a first open end and a second open end spaced from the first open end;
a fan assembly secured within the housing at the first open end of the housing, the fan assembly including a fan support, a fan rotatably coupled to the fan support, and a motor coupled to the fan to drive rotation of the fan, the fan support being configured to support the fan assembly within the housing;
a mounting ring secured to the housing;
a duct cover secured to housing at the second open end of the housing; and
a noise reduction assembly disposed in the housing adjacent the fan assembly to reduce noise generated by the fan assembly,
wherein the noise reduction assembly includes a holder configured to be secured to the housing, and an acoustic component secured to the holder, the holder includes a plate that is secured to the housing by the mounting ring and a rod having one end secured to the plate and an opposite end secured to the duct cover, the rod being configured to support the acoustic component.

US Pat. No. 10,211,670

UPS WITH INTEGRATED BYPASS SWITCH

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) comprising:an input configured to be coupled to an AC source and to receive input AC power from the AC source;
a DC bus configured to be coupled to a DC source and to receive backup DC power from the DC source;
an output configured to be coupled to at least one AC load and to provide output AC power to the at least one AC load derived from at least one of the input AC power and the backup DC power;
a delta transformer having a primary winding and a secondary winding, the primary winding coupled between the input and the output and the secondary winding having a first end and a second end;
a delta inverter coupled between the DC bus and the secondary winding;
a short circuit control circuit selectively coupled between the first end and the second end of the secondary winding;
a main inverter coupled between the DC bus and the output;
a mains switch selectively coupled between the input and the primary winding; and
a controller configured to:
monitor the input AC power and, in response, control the UPS to operate in a bypass mode of operation;
control, in the bypass mode of operation, the short circuit control circuit to couple the first end of the secondary winding to the second end such that the secondary winding is short circuited and unconditioned output AC power, derived from the input AC power via the primary winding, is provided to the output;
operate, in the bypass mode of operation the mains switch with full cycle control;
monitor the output AC power and, in response, control the UPS to operate in an online mode of operation;
operate, in the online mode of operation, the short circuit control circuit to decouple the first end of the secondary winding from the second end and operate the delta inverter to control the input AC power by regulating current in the secondary winding of the delta transformer; and
operate, in the online mode of operation, the mains switch with alternating cycle control.

US Pat. No. 10,211,672

DC-LINK BUS BALANCER

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system, the UPS system comprising:an input configured to be coupled to an AC source and to receive input AC power from the AC source;
an output configured to provide output AC power to a load;
a converter coupled to the input and configured to convert the input power into DC power having a positive DC voltage level and a negative DC voltage level;
a plurality of DC busses coupled to the converter and configured to receive the DC power from the converter, the plurality of DC busses including a positive DC bus configured to maintain the positive DC voltage level, a mid-point DC bus, and a negative DC bus configured to maintain the negative DC voltage level;
a 3-level inverter coupled to the plurality of DC busses and configured to convert the DC power from the plurality of DC busses into the output AC power and provide the output AC power to the output; and
a controller configured to monitor the positive DC voltage level and the negative DC voltage level, identify an imbalance between the positive DC voltage level and the negative DC voltage level, and selectively control, based on the imbalance, the 3-level inverter to operate in a 2-level mode of operation and a 3-level mode of operation to transfer energy between the positive DC bus and the negative DC bus,
wherein in operating the 3-level inverter in the 2-level mode of operation, the controller is further configured to operate the 3-level inverter to alternately couple the output to the positive DC bus and the negative DC bus to alternately provide a positive DC pulse and a negative DC pulse, respectively, to the output,
wherein in operating the 3-level inverter in the 3-level mode of operation, the controller is further configured to operate the 3-level inverter to alternately couple the output to the mid-point DC bus and one of the positive DC bus and the negative DC bus,
wherein in operating the 3-level inverter in the 2-level mode of operation, the controller is further configured to operate the 3-level inverter to provide multiple successive transitions between the positive and negative DC pulses, and
wherein in selectively controlling the 3-level inverter to operate in the 2-level mode of operation and the 3-level mode of operation, the controller is further configured to operate the 3-level inverter in the 2-level mode of operation during a half-period of a line cycle of the output AC power, and operate the 3-level inverter in the 3-level mode of operation during a remainder of the line cycle of the output AC power.

US Pat. No. 10,170,257

SYSTEMS AND METHODS FOR CONTROLLING RELAYS

SCHNEIDER ELECTRIC IT COR...

1. A relay control circuit configured for use with a relay having a coil voltage input, the relay control circuit comprising:a first input to receive a first voltage capable of energizing the relay from a de-energized state;
a second input to receive a second voltage capable of maintaining the relay in an energized state, the second voltage being less than the first voltage;
a switch disposed between the first input and the coil voltage input, the switch having a control input to receive a control signal that electrically couples the first input to the coil voltage input in response to the control signal having a first state and that electrically decouples the first input from the coil voltage input in response to the control signal having a second state;
a capacitor having a first end directly electrically coupled to a common connection, the common connection being between the coil voltage input and the switch, the capacitor having a second end electrically coupled to ground, wherein the capacitor is configured to hold the coil voltage input at the first voltage for a period of time to energize the relay from the de-energized state after the first input is electrically decoupled from the coil voltage input;
a diode electrically coupled in series between the second input and the coil voltage input; and
a switch control circuit having an input to receive a relay control signal and an output electrically coupled to the control input of the switch, the switch control circuit providing the control signal having the second state in response to assertion of the relay control signal and providing the control signal having the first state in response to de-assertion of the relay control signal.

US Pat. No. 10,152,877

SYSTEMS AND METHODS FOR ADAPTIVE DETECTION OF AUDIO ALARMS

SCHNEIDER ELECTRIC IT COR...

1. A system for adaptive detection of audio alarms, comprising:a microphone configured to receive a series of sounds;
a communications interface operably coupled to the microphone and configured to communicate with an external network;
a memory configured to store a defined set of alarm templates; and
a processor operably coupled to the memory and the communications interface and configured to:
analyze the series of sounds to determine an alarm characteristic;
compare the alarm characteristic to the defined set of alarm templates stored in the memory;
store the compared alarm characteristic in the memory based on the defined set of alarm templates previously stored in the memory;
transmit an alert to a client device that an audio alarm has occurred;
receive user input from a client device and identify the audio alarm based on the user input; and
generate and store in the memory an alarm template for the alarm characteristic based on the user input.

US Pat. No. 10,277,030

LOAD BALANCING FOR POWER DISTRIBUTION

SCHNEIDER ELECTRIC IT COR...

1. A Power Distribution Unit (PDU), the PDU comprising:an input configured to be coupled to a power source to receive 3-phase power from the power source;
a plurality of phase lines coupled to the input, each phase line configured to carry one phase of the 3-phase power;
a neutral line coupled to the input;
a plurality of outlets;
a plurality of current monitors, each of the plurality of current monitors coupled to a corresponding one of the plurality of outlets, and each of the plurality of current monitors further configured to generate a signal indicative of current from one of the plurality of phase lines to the corresponding one of the plurality of outlets;
a first switch circuit configured to selectively couple the plurality of outlets to the plurality of phase lines;
a second switch circuit configured to selectively couple each of the plurality of outlets to one of the neutral line and a second one of the plurality of phase lines;
a data connection; and
a controller coupled to the plurality of current monitors, the first switch circuit, the second switch circuit, and the data connection, wherein the controller is configured to receive the signals from the plurality of current monitors to monitor current from the plurality of phase lines to the plurality of outlets, receive, via the data connection, phase loading information related to 3-phase power of at least one external device coupled to the power source, and operate the first switch circuit and the second switch circuit to provide one of a phase-to-phase voltage and a phase-to-neutral voltage to each of the plurality of outlets based on the current and the received phase loading information.

US Pat. No. 10,277,067

POWER SUPPLY CONTROL

SCHNEIDER ELECTRIC IT COR...

1. A power supply system comprising:an input configured to receive input power from an input power source;
an output configured to provide output power to a load;
a power factor correction circuit coupled to the input;
an inverter having an input connection coupled to the power factor correction circuit, and an output connection coupled to the output;
a bus coupled to the power factor correction circuit and the inverter; and
a switching circuit coupled to the inverter, the switching circuit configured to:
direct AC power from the input to the input connection of the inverter, bypassing the bus, when in a first mode of operation; and
simultaneously direct AC power from the input to the input connection of the inverter and DC power from the bus to the input connection of the inverter when in a second mode of operation.

US Pat. No. 10,241,803

SYSTEM AND METHOD FOR UPDATING DEVICE SOFTWARE

SCHNEIDER ELECTRIC IT COR...

1. A device comprising:a memory; and
a processor coupled to the memory and configured to:
determine that a bootloader instruction set in a designated bootloader memory execution location in a memory does not contain a valid bootloader instruction set,
access a replacement bootloader instruction set from a predetermined location in the memory;
store the replacement bootloader instruction set in the designated bootloader memory execution location;
validate the replacement bootloader instruction set utilizing a bootloader signature; and
execute, the replacement bootloader instruction set from the designated bootloader memory execution location.

US Pat. No. 10,228,196

METHOD AND APPARATUS FOR MODULAR AIR-TO-AIR HEAT EXCHANGER

SCHNEIDER ELECTRIC IT COR...

1. A heat exchanger core assembly comprising:a frame assembly;
a plurality of core bundles positioned within the frame assembly, each core bundle including at least one row of tubing defining at least one end of the core bundle, an edge seal gasket to seal the core bundle from an adjacently placed core bundle, and an indoor face seal gasket to seal the at least one end with respect to the frame assembly,
wherein the at least one row of tubing define a first end and a second end, each of the first end and the second end having the edge seal gasket and the indoor face seal gasket, and
wherein the rows of the core bundles are offset from one another; and
a center wall configured to be positioned lengthwise between two adjacently placed core bundles;
wherein the center wall includes at least one inner panel and at least one hanging bracket provided along a length of the at least one inner panel, the at least one hanging bracket being configured to hang on a core of a core bundle to support the center wall.

US Pat. No. 10,230,263

ADAPTIVE POWER AVAILABILITY CONTROLLER

SCHNEIDER ELECTRIC IT COR...

1. A method of controlling a UPS (Uninterruptible Power Supply) system having a plurality of units using a controller, the method comprising:obtaining an actual power consumption over a continuous period by a load coupled to the UPS system;
determining a log based power schedule in response to obtaining the actual power consumption over the continuous period;
determining a power availability for the UPS system in response to determining the log based power schedule; and
adjusting a power capacity of the UPS system using the controller based on the power availability.

US Pat. No. 10,199,957

DC-AC BIDIRECTIONAL CONVERTER

SCHNEIDER ELECTRIC IT COR...

1. A DC-AC bidirectional converter comprising:a first interface configured to be coupled to a DC source;
an input bridge coupled to the first interface;
an inverter portion coupled to the input bridge and comprising:
a first bidirectional converter coupled to the input bridge;
a second bidirectional converter coupled to the input bridge; and
an output filter coupled to the first bidirectional converter and the second bidirectional converter;
a second interface coupled to the output filter and configured to be coupled to a load; and
a controller configured to operate the input bridge to draw DC power from the DC source and provide power to the inverter portion, to operate, in a first mode of operation, the first bidirectional converter, in conjunction with the output filter, to generate a positive half cycle of an output voltage waveform at the second interface, and to operate, in a second mode of operation, the second bidirectional converter, in conjunction with the output filter, to generate a negative half cycle of the output voltage waveform at the second interface,
wherein the first bidirectional converter comprises:
a first transformer including a first primary winding and a first secondary winding, the first primary winding including a first end and a second end coupled to the input bridge, and the first secondary winding including a first end coupled to a first center tap via a first portion and a second end coupled to the first center tap via a second portion;
a first switch coupled between the first end of the first secondary winding and the second interface; and
a second switch coupled between the second end of the first secondary winding and the second interface, and
wherein the second bidirectional converter comprises:
a second transformer including a second primary winding and a second secondary winding, the second primary winding including a first end and a second end coupled to the input bridge, and the second secondary winding including a first end coupled to a second center tap via a first portion and a second end coupled to the second center tap via a second portion;
a third switch coupled between the first end of the second secondary winding and neutral; and
a fourth switch coupled between the second end of the second secondary winding and neutral.

US Pat. No. 10,331,153

SYSTEM AND METHOD OF SMART ENERGY STORAGE IN A UPS

SCHNEIDER ELECTRIC IT COR...

1. A method for controlling an uninterruptible power supply (UPS) having a battery, the method comprising acts of:powering a load coupled to the UPS using utility power in a first operating mode of the UPS;
determining, by a controller of the UPS, in the first operating mode, whether an energy cost associated with the utility power exceeds a first threshold cost;
determining, by the controller, in the first operating mode, whether a charge level of the battery exceeds a threshold charge level;
automatically switching from the first operating mode to a second operating mode of the UPS, by the controller, to power the load from the battery in response to determining that the energy cost associated with the utility power exceeds the first threshold cost and that the charge level of the battery exceeds the threshold charge level;
determining, by the controller, in the first operating mode, whether an energy cost associated with the utility power is below a second threshold cost, the second threshold cost being lower than the first threshold cost;
automatically switching from the first operating mode to a third operating mode of the UPS, by the controller, to power the load from utility power while simultaneously charging the battery using utility power in response to determining that the energy cost associated with the utility power is below the second threshold cost;
determining, by the controller, in the first or second operating mode, whether the charge level of the battery is below a reserve charge level, the reserve charge level being lower than the threshold charge level; and
automatically switching from the first or second operating mode to the third operating mode of the UPS, by the controller, to power the load from utility power while simultaneously charging the battery using utility power in response to determining that the charge level of the battery is below the reserve charge level.

US Pat. No. 10,274,978

DROPPED CEILING SYSTEM COOLING PREDICTION

SCHNEIDER ELECTRIC IT COR...

1. A method for evaluating ceiling plenum airflow patterns and cooling performance of equipment in a data center, the equipment including a plurality of equipment racks and one or more cooling providers, the method comprising:receiving data related to types of equipment and an arrangement of equipment in the data center including a location and configuration of the plurality of equipment racks and one or more hot aisles;
receiving data related to locations and configurations of one or more perforated ceiling tiles providing fluid communication between the one or more hot aisles and a ceiling plenum;
determining a first quantity of air exhausted from one of the plurality of equipment racks;
determining a second quantity of air captured by the one or more perforated ceiling tiles which is exhausted from the one of the plurality of equipment racks using an algebraic calculation method, the second quantity of air being determined based in part on geometric distances of the one or more perforated ceiling tiles from the one of the plurality of equipment racks;
determining a hot aisle capture index for the one of the plurality of equipment racks based in part on the first quantity of air and the second quantity of air, the hot aisle capture index being defined as the ratio of net airflow captured and net airflow supplied at a location of the ceiling plenum;
storing, on a storage device, an indication of the hot aisle capture index; and
controlling at least one of a cooling provider of the one or more cooling providers and one or more equipment racks of the plurality of equipment racks based on the hot aisle capture index.

US Pat. No. 10,243,376

STACK DC POWER SUPPLY BATTERY CHARGER

SCHNEIDER ELECTRIC IT COR...

1. A battery charging system comprising:a first input and a second input configured to receive an input voltage;
a first battery output and a second battery output configured to couple to a battery to provide an output voltage;
a transformer having a primary winding coupled to the first input and to the second input, and having a first secondary winding and a second secondary winding;
a first rectifier having a first input coupled to the first secondary winding and having a first output and a second output;
a second rectifier having an input coupled to the second secondary winding and having a first output and a second output, wherein the first output of the second rectifier is coupled to the second output of the first rectifier and the second output of the second rectifier is coupled to the second battery output; and
a charger having a first input coupled to the first output of the first rectifier and a second input coupled to the first output of the second rectifier, and having a first output coupled to the first battery output, and being configured to provide a charging current to the battery coupled to the first battery output and to the second battery output,
wherein the second rectifier is configured to generate, based on power received from the second secondary winding, a bias voltage, and to provide the bias voltage to the second output of the first rectifier and the second input of the charger to bias the first rectifier and the charger to the bias voltage.

US Pat. No. 10,240,803

AIRFOIL FRAME FOR COMPUTER ROOM AIR CONDITIONING UNIT

SCHNEIDER ELECTRIC IT COR...

1. A method of reducing pressure drops within a computer room air conditioner unit comprising a housing including a front, a back, two sides, a bottom and an open top, the open top of the housing being configured to receive and direct air toward an interior region of the housing, a heat exchanger supported by the housing within the interior region of the housing, at least one fan module supported by the housing, the at least one fan module being configured to draw air into the housing through the inlet, direct air through the heat exchanger, and exhaust treated air through the outlet, and an airfoil frame secured to the upper portions of the front and the sides of the housing at the open top of the housing, the arrangement being such that the heat exchanger is disposed below the airfoil frame, the airfoil frame defining an inlet of the housing and being configured to direct air to the heat exchanger and to create a boundary layer that substantially eliminates pressure drops at the inlet of the housing, the method comprising:directing air over the airfoil frame of the housing of the computer room air conditioner unit.

US Pat. No. 10,333,424

OFFLINE POWER SUPPLY

SCHNEIDER ELECTRIC IT COR...

1. A power supply system comprising:an input line configured to receive input AC power;
a rectifier having an input coupled to the input line and an output, the rectifier configured to rectify the input AC power to generate rectified AC power;
a switch having a first end coupled to the output of the rectifier and a second end selectively coupled to an inductor, the switch configured to receive the rectified AC power from the rectifier;
a capacitor coupled to the inductor; and
control circuitry coupled to the inductor and the capacitor, wherein the control circuitry is configured to:
control the switch to selectively couple the output of the rectifier to the inductor to generate a first DC power level derived from the rectified AC power;
monitor the rectified AC power received by the switch;
operate in a first mode of operation while receiving the first DC power level;
determine a phase angle value corresponding to zero crossings of the rectified AC power received by the switch;
detect that a phase angle of the rectified AC power received by the switch is equal to the phase angle value; and
transition into a second mode of operation in response to detection of the phase angle being equal to the phase angle value.

US Pat. No. 10,340,732

AUTOMATIC UPS BYPASS LOAD SHARING

SCHNEIDER ELECTRIC IT COR...

1. An Uninterruptible Power Supply (UPS) system comprising:a plurality of Uninterruptible Power Supplies (UPS) configured to be coupled in parallel, each UPS comprising:
an input configured to be coupled to a power source and to receive input power;
an output configured to be coupled to a load and to provide output power to the load derived from at least the input power; and
a bypass line selectively coupled between the input and the output via a bypass switch, wherein the bypass switch is configured to close in a first mode of operation, coupling the input of the UPS to the output of the UPS via the bypass line, and to open in a second mode of operation, decoupling the input of the UPS from the output of the UPS; and
a controller coupled to the plurality of UPS's and configured to:
monitor the input power received at the input of each UPS;
in response to a determination that the input power is at a desired level, control the bypass switch of a first UPS in the plurality of UPS's to operate in the first mode of operation and provide a continuous first output current waveform with a Root Mean Square (RMS) value to the load; and
in response to the determination that the input power is at the desired level, control the bypass switch of a second UPS in the plurality of UPS's to close in the first mode of operation such that a second output current waveform is provided by the second UPS to the load via the bypass line of the second UPS, and control the bypass switch of the second UPS to open in the second mode of operation such that the second output current waveform provided to the load includes at least one first delay period compared to the continuous first output current waveform provided to the load via the bypass line of the first UPS.

US Pat. No. 10,317,151

WATER COLLECTION SYSTEM FOR INDIRECT EVAPORATIVE COOLER

SCHNEIDER ELECTRIC IT COR...

1. A method of collecting and distributing water within an indirect evaporative cooler configured to spray water on a heat exchanger, the method comprising:channeling water with a plurality of panel assemblies disposed within an interior of a housing;
depositing water from the panel assemblies to a plurality of tube assemblies positioned below the panel assemblies within the housing; and
collecting water from the plurality of tube assemblies to be redistributed within the indirect evaporative cooler,
wherein each panel assembly includes two molded panels adhered to on opposite sides of a flat center panel, and
wherein each molded panel includes a pattern of funnels, the method further comprising staggering the funnels vertically with respect to one another.