US Pat. No. 10,154,610

APPARATUS FOR DISTRIBUTING POWER

Vertiv Corporation, Wort...

1. An apparatus for distributing power, comprising:a power configuration device, the power configuration device configured to couple with at least one input power feed, the power configuration device including a housing, a first connector device, a display to provide power related information, a wireless transceiver and a host box configuration configured to receive three phase wye power or three phase delta power;
an outlet power strip, wherein the outlet power strip includes another housing, a second connector device and a set of outlet power groups of at least C13 or C19 receptacles configured to supply a particular output power characteristic; and
a cable including a connector device on a first end of the cable and another connector device on a second end of the cable configured to removably couple the power configuration device with the outlet power strip, the cable including twelve live conductors and two ground conductors, wherein the connector device on a first end of the cable is configured to removably connect with the first connector device of the power configuration device and the another connector device on the second end of the cable is configured to removably connect with the second connector device on the outlet power strip.

US Pat. No. 10,172,261

SYSTEM AND METHOD FOR MODULAR DATA CENTER

Vertiv Corporation, Colu...

20. A unit structure for use in forming a modular data center, the unit structure comprising:an elongated frame structure and a perimeter frame structure forming a rectangular-like subsystem, and adapted to be supported above a floor surface and above a plurality of equipment racks by a plurality of vertical structural support columns;
a roof panel secured to the perimeter frame structure and extending along substantially an entire length of the perimeter frame structure, for assisting in containing cold air within a cold aisle formed below the roof panel;
a ceiling panel secured to the elongated frame structure and spaced apart from the roof panel to define a volume through which hot air may be flowed; and
a pair of panels coupled to and extending vertically adjacent to the elongated frame structure, along opposing sides of the elongated frame such that the panels face one another when in a deployed position extending outwardly from the elongated frame structure, which cooperatively also form the cold aisle therebetween and hot aisles on opposite sides of each of the pair of panels, along substantially an entire length of the unit structure parallel to a length of the unit structure.

US Pat. No. 10,208,973

SYSTEM AND METHOD FOR RAPID INPUT AND CONFIGURATION OF SENSORS FOR A HVAC MONITORING SYSTEM

Vertiv Corporation, Colu...

1. A computer based system for controlling use of a plurality of sensors present within a predetermined environment and controlling how various ones of the sensors are grouped together into a plurality of groups for monitoring/control purposes, the system comprising:a processor for communicating with the plurality of sensors and using data reported from the sensors to generate a metric therefrom, the processor further configured to receive temperature data from designated groups of the plurality of sensors, the processor communicating with a computer system having a display system;
a user interface system module adapted to run on a computer, the user interface system module being in communication with the processor and configured to generate a graphical user interface on the display system;
at least one of a touchscreen display or a mouse in communication with the computer based system for enabling the user to interact with and make selections using the user interface system module;
the graphical user interface being controlled by the computer based system and configured to generate an association matrix screen on the display system, the association matrix screen including a plurality of fields arranged in a matrix array for indicating a group assignment for each one of the plurality of sensors, and enabling a user to change a group assignment for any given one of the plurality of sensors by making a selection of a specific one of the fields, the selection operating to either associate or disassociate a selected one of the plurality of sensors with a specific group, and wherein at least one of the plurality of sensors is able to be associated, using the associate matrix screen, with two or more different, selected groups of sensors, and all the groups of sensors with which a given said sensor is associated with are displayed on the association matrix screen along with a separate information tab associated with each said group of sensors, each said information tab providing information on a performance of at least a subplurality of the sensors associated with a given said group of sensors.

US Pat. No. 10,174,977

APPARATUS AND METHOD FOR SUBCOOLING CONTROL BASED ON SUPERHEAT SETPOINT CONTROL

Vertiv Corporation, Colu...

9. The system of claim 1, wherein:the summer is configured to determine an error between the adjusted superheat setpoint and the superheat level of the compressor; and
the control module is configured to generate the control signal based on the error between the adjusted superheat setpoint and the superheat level.

US Pat. No. 10,119,730

HYBRID AIR HANDLER COOLING UNIT WITH BI-MODAL HEAT EXCHANGER

Vertiv Corporation, Colu...

1. A hybrid air handler cooling unit comprising:a refrigerant circuit having a compressor, a condenser having first and second condenser coils, a pump, an expansion valve, an evaporator having an evaporator coil and a bi-modal heat exchanger;
the hybrid air handler cooling unit having a direct expansion mode in which the compressor is running, the pump is off and the refrigerant circuit has a direct expansion only refrigerant flow path with the bi-modal heat exchanger in parallel with the first and second condenser coils and refrigerant flows from the compressor in parallel through the first and second condenser coils and bi-modal heat exchanger with the bi-modal heat exchanger functioning as a condenser coil, from the first and second condenser coils and bi-modal heat exchanger through the expansion valve and from the expansion valve to the compressor and the hybrid air handler cooling unit has a return air flow path in which return air flows across the evaporator coil but not across the bi-modal heat exchanger;
the hybrid air handler cooling unit having a pumped refrigerant economization mode in which the compressor is off, the pump is running and the refrigerant circuit has a pumped refrigerant economization only refrigerant flow path with the bi-modal heat exchanger in parallel with the first and second condenser coils and refrigerant flows from the pump through the evaporator coil and from the evaporator coil through a valve around the compressor and from the compressor in parallel through the first and second condenser coils and bi-modal heat exchanger with the bi-modal heat exchanger functioning as a condenser coil, and back to the pump and the hybrid air handler cooling unit has a return air flow path in which return air flows across the evaporator coil but not across the bi-modal heat exchanger; and
the hybrid air handler cooling unit having a mixed direct expansion/pumped refrigerant economization mode in which the compressor and pump are both running and the refrigerant circuit has a mixed direct expansion refrigerant flow path and a mixed pumped refrigerant economization refrigerant flow path that are independent flow paths with the bi-modal heat exchanger in the pumped refrigerant economization refrigerant flow path in series between an outlet of the pump and an inlet of the second condenser coil and functions as a pre-cooler evaporator coil with refrigerant flowing in the mixed pumped refrigerant economization refrigerant flow path from the pump through the bi-modal heat exchanger and from the bi-modal heat exchanger through the second condenser coil and back to the pump, and refrigerant flowing in the mixed direct expansion refrigerant flow path from the compressor through the first condenser coil and from the first condenser coil through the expansion valve and from the expansion valve to the compressor, and the hybrid air handler unit also has a return air flow path in the where return air first flows across the bi-modal heat exchanger and then across the evaporator coil.

US Pat. No. 10,250,032

INTELLIGENT POWER STRIP WITH MANAGEMENT OF BISTABLE RELAYS TO REDUCE CURRENT IN-RUSH

Vertiv Corporation, Colu...

1. A power distribution unit (PDU) comprising:at least one power receptacle configured to enable attachment of an alternating current (AC) power cord of an external device to the power receptacle;
a branch receptacle controller (BRC) having at least one bistable relay and associated with the at least one power receptacle for supplying AC power to the at least one power receptacle from an external AC power source, the bistable relay having contacts able to be set to an open position and to a closed position;
the BRC further configured to monitor a parameter of a line voltage from the external AC power source, and to use the monitored parameter to detect when a loss of AC power is about to occur, and to toggle the bistable relay, when the bistable relay is in a closed position, to an open position upon the detection that AC power is about to be lost; and
a rack power distribution unit controller (RPDUC) configured to communicate with the BRC and to monitor a state of the bistable relay, and to command the BRC to close the bistable relay after AC power is restored.

US Pat. No. 10,205,281

APPARATUS FOR RETAINING A PLUG WITHIN A RECEPTACLE

Vertiv Corporation, Colu...

1. An apparatus for retaining a plug within a receptacle, comprising:a receptacle body, the receptacle body including at least one tab configured to make contact with a plug when the plug is inserted within the receptacle body, the at least one tab is located within an interior of the receptacle body; and
a release device disposed within the receptacle body, the release device including a face portion and at least one prong, wherein the release device is configured to allow the face portion to be depressed and cause the at least one prong to come into contact with the at least one tab in order to allow the plug to be removed from the receptacle body.

US Pat. No. 10,342,166

COOLING SYSTEMS FOR SMALL EQUIPMENT ROOMS AND METHODS OF COOLING SMALL EQUIPMENT ROOMS

Vertiv Corporation, Colu...

1. A method of cooling an equipment closet in a building with a cooling system, the cooling system having a direct expansion cooling circuit that includes a compressor, a condenser having a condenser coil and a condenser fan, an expansion device and an evaporator having an evaporator coil and an evaporator fan that are arranged in the direct expansion cooling circuit, the method comprising:disposing a cabinet at least partially in the equipment closet wherein at least the condenser is disposed in an upper portion of the cabinet and the evaporator is disposed in a lower portion of the cabinet;
separating the lower portion of the cabinet from the upper portion of a cabinet with a first wall to provide separate air flow paths through the upper portion of the cabinet and the lower portion of the cabinet;
operating the cooling system in a first mode of operation with the direct expansion cooling circuit off to cool an interior of the equipment closet with transfer air drawn in from an area of the building outside of the equipment closet and operating the cooling system in a second mode of operation with the direct expansion cooling circuit running to cool the interior of the equipment closet with air cooled by the direct expansion cooling circuit;
controlling operation of the cooling system with a controller by having the controller operate the cooling system in the first mode of operation when the controller determines that operating the cooling system in the first mode of operation will meet a cooling demand due to heat load in the interior of the equipment closet and having the controller operate the cooling system in the second mode of operation when the controller determines that operating the cooling system in the first mode of operation will not meet the cooling demand;
when operating the cooling system in the first mode of operation drawing transfer air in through a transfer air inlet of the lower portion of the cabinet from an area of the building outside of the equipment closet and surrounding the transfer air inlet of the lower portion of the cabinet and when operating the cooling system in a second mode of operation drawing transfer air in through the transfer air inlet in the lower portion of the cabinet and cooling it with the direct expansion cooling circuit;
creating a positive pressure in the interior of the equipment closet by the discharge of air with the evaporator fan through a cool air outlet of the lower portion of the cabinet into the interior of the equipment closet to force air in the interior of the equipment closet out through a hot air outlet of the equipment closet; and
wherein having the controller operate the cooling system in the first mode of operation includes having the controller operate the cooling system with the condenser fan off and the evaporator fan running and drawing transfer air in with the evaporator fan through the transfer air inlet of the lower portion of the cabinet and with the evaporator fan discharging this air out through the cool air outlet of the lower portion of the cabinet into the interior of the equipment closet; and
wherein having the controller operate the cooling system in the second mode of operation includes having the controller operate the cooling system with the condenser fan running and the evaporator fan running and drawing transfer air in with the condenser fan through a transfer air inlet of the upper portion of the cabinet and across the condenser coil to cool refrigerant flowing through the condenser coil and after this air passes across the condenser coil discharging this air with the condenser fan out through a hot air outlet of the upper portion of the cabinet into a ceiling space and also drawing transfer air in with the evaporator fan through the transfer air inlet of the lower portion of the cabinet and across the evaporator coil to cool the air with refrigerant flowing through the evaporator coil and with the evaporator fan discharging the cooled air out through the cool air outlet of the lower portion of the cabinet into the interior of the equipment closet.

US Pat. No. 10,292,314

COOLING SYSTEM FOR HIGH DENSITY HEAT LOADS

Vertiv Corporation, Colu...

1. A method for providing redundant control of a cooling system comprising:providing a plurality of primary cooling modules, the primary cooling modules circulating refrigerant through a respective circuit including a thermal load;
providing a secondary cooling module, the secondary cooling module selectively providing a supplemental flow of refrigerant through the circuit associated with a respective primary cooling module when a fault is detected in one of the primary cooling modules;
transitioning the secondary cooling module from a standby mode of operation to an online mode of operation upon detection of the fault in one of the primary cooling modules; and
arranging valves disposed between the one primary cooling module and the circuit to prevent refrigerant flow therebetween.

US Pat. No. 10,234,178

FIN AND TUBE-EVAPORATOR WITH MINI-SLAB CIRCUIT EXTENDERS

Vertiv Corporation, Colu...

1. An evaporator fora cooling system, comprising:
a slab coil the slab coil having a plurality of refrigerant circuits with each refrigerant circuit being a fin-and-tube assembly that extends across the slab coil;
at least one of the refrigerant circuits having a mini-slab circuit extender that has a fin-and-tube assembly that is disposed across only a portion of the fin-and-tube assembly of that refrigerant circuit; and
the at least one refrigerant circuit that has the mini-slab circuit extender is a cold refrigerant circuit that has a refrigerant circuit temperature that is at least 15° F. less than a refrigerant circuit temperature of that refrigerant circuit of the plurality of refrigerant circuits that has a highest refrigerant circuit temperature.

US Pat. No. 10,254,028

COOLING SYSTEM WITH DIRECT EXPANSION AND PUMPED REFRIGERANT ECONOMIZATION COOLING

Vertiv Corporation, Colu...

1. A cooling system, comprising:a cabinet having an air inlet and an air outlet;
an air moving unit disposed in the cabinet;
first and second cooling circuits;
a controller configured to operate the cooling system including the cooling circuits;
the first cooling circuit having an upstream evaporator coil and a downstream evaporator coil, a first condenser, a first compressor, a receiver tank, a first liquid pump, a first liquid pump bypass valve that bypasses the liquid pump when the liquid pump bypass valve is open, a first compressor bypass valve that bypasses the first compressor when the first compressor bypass valve is open, a first controlled valve coupled between the first liquid pump and the first upstream evaporator coil and a first expansion device coupled between the first liquid pump bypass valve and the first downstream evaporator coil;
the second cooling circuit having an second evaporator coil, a second condenser, a second compressor, and a second liquid pump, a second liquid pump bypass valve that bypasses the second liquid pump when the second liquid pump bypass valve is open, a second compressor bypass valve that bypasses the second compressor when the second compressor bypass valve is open, and a second expansion device coupled between the second liquid pump bypass valve and the downstream evaporator coil;
an evaporator disposed in the cabinet that includes the first upstream evaporator coil and the first downstream evaporator coil of the first cooling circuit and the second evaporator coil of the second cooling circuit;
the first upstream and first downstream evaporator coils of the first cooling circuit are arranged so that air to be cooled passes across them in serial fashion, first over the first upstream evaporator coil of the first cooling circuit and then over the first downstream evaporator coil of the first cooling circuit;
the second evaporator coil of the second cooling circuit arranged so that the air to be cooled passes over it and over the first upstream and first downstream evaporator coils of the first cooling circuit in serial fashion;
the first and second cooling circuits each having a pumped refrigerant economization cooling mode and a direct expansion cooling mode wherein when any of the first and second cooling circuits are operated by the controller in direct expansion cooling mode the controller is configured to have the compressor of that cooling circuit on with the compressor bypass valve of that cooling circuit closed and the liquid pump of that cooling circuit off and bypassed with the liquid pump bypass valve of that cooling circuit open and when that cooling circuit is operated by the controller in the pumped refrigerant economization cooling mode the controller is configured to have compressor of that cooling circuit off and bypassed with the compressor bypass valve of that cooling circuit open and the liquid pump of that cooling circuit on with the liquid pump bypass valve of that cooling circuit closed; and
wherein when the first cooling circuit is operated by the controller in its pumped refrigerant economization cooling mode the controller is configured to have the first controlled valve coupling the first liquid pump to the first upstream evaporator coil open and refrigerant flows from the first liquid pump through the open first controlled valve to the first upstream evaporator coil and also flows from the first liquid pump to the first downstream evaporator coil through the first expansion device and when the first cooling circuit is operated by the controller in its direct expansion cooling mode the controller is configured to have the first controlled valve closed and refrigerant flows around the bypassed first liquid pump of the first refrigerant circuit and only to the first downstream evaporator coil through the first expansion device and not to the first upstream evaporator coil.

US Pat. No. 10,277,066

METHOD FOR BALANCING POWER IN PARALLELED CONVERTERS

Vertiv Corporation, Colu...

1. A method to balance power amongst parallel connected power converters in an uninterruptible power supply (UPS), each power converter having an output coupled via a filter to a load, comprising:applying, by a centralized controller, a control signal to each of the parallel connected power converters, where the control signals applied to the parallel connected power converters are derived from a common control signal output by the centralized controller;
receiving, by the centralized controller, measurements of current being supplied by each power converter to the load;
receiving, by the centralized controller, a single measurement of voltage common to each power converter;
adjusting, by the centralized controller, phase of voltage applied to at least one of the power converters based on the received current measurements and the voltage measurement, such that the phase adjustment causes same magnitude of current to flow though each filter.

US Pat. No. 10,288,324

PUMPED REFRIGERANT COOLING SYSTEM WITH 1+1 TO N+1 AND BUILT-IN REDUNDANCY

Vertiv Corporation, Colu...

1. A cooling system comprising:a plurality of primary cooling modules and a secondary cooling module, each of the primary cooling modules including:
a first pump, the first pump configured for circulating refrigerant;
a first condenser; and
a first liquid receiver,
wherein the cooling system further comprises a plurality of evaporators, and wherein each of the evaporators is fluidly connected to a respective one of the plurality of primary cooling modules;
the first pump of each cooling module is configured to supply the refrigerant to a respective evaporator of the plurality of evaporators at a first respective temperature, and each one of the first condensers is configured to receive the refrigerant from the respective evaporator, the refrigerant received by each of the first condensers being at a higher temperature than the first respective temperature, each of the primary cooling modules is configured to supply the refrigerant through the respective evaporator;
wherein each first liquid receiver is configured to receive the refrigerant in a liquid state, and
the secondary cooling module including a second pump for circulating the refrigerant, a second condenser, and a second liquid receiver,
wherein the second condenser is configured to selectively receive refrigerant from any of the evaporators, and the second liquid receiver is configured to receive the refrigerant in a liquid state from the second condenser,
wherein the secondary cooling module is configured to selectively provide a supplemental flow of the refrigerant through the evaporator of a primary cooling module of the plurality of primary cooling modules for which a failure has been detected.

US Pat. No. 10,340,733

3-WIRE TRANSFORMER-FREE UPS SYSTEM AND METHOD OF CONTROL TO REDUCE COMMON MODE CURRENT

Vertiv Corporation, Colu...

2. A double conversion three-wire uninterruptible power supply system, comprising:a rectifier coupled to a rectifier power source without a common mode choke in series between the rectifier and the rectifier power source, the rectifier having an output coupled to an input of an inverter;
a bypass switch coupled to a bypass power source that is different than the rectifier power source; and
a control module that controls the rectifier, bypass switch and inverter, the control module configured to control the inverter with a pulse width modulation control that does not have common mode injection when the inverter is paralleled with the bypass power source and with a pulse width modulation control that has common mode injection when the inverter is not paralleled with bypass power source.

US Pat. No. 10,378,784

PLENUM PRESSURE CONTROL SYSTEM

Vertiv Corporation, Wort...

1. A system for controlling plenum pressure for an equipment cabinet, comprising:a front surface, wherein the equipment cabinet intakes air through the front surface;
a back surface, wherein the equipment cabinet expels air through the back surface;
a first internal side, which is approximately perpendicular to the front surface and the back surface;
a second internal side, which is approximately perpendicular to the front surface and the back surface;
at least one enclosure fan;
at least one internal baffle mounted within the equipment cabinet; wherein the at least one internal baffle is configured to block a gap between a component in the equipment cabinet and the second internal side and direct air drawn in the front surface of the equipment cabinet to another gap between the component and the first internal side;
a pressure controller which includes a pressure sensor, wherein the pressure controller detects a differential pressure utilizing the pressure sensor and controls the at least one enclosure fan in response to the differential pressure detected by the pressure sensor to maintain a negative pressure within the equipment cabinet,
wherein the at least one enclosure fan has a fan speed based on an amount of power received and the pressure controller controls the at least one enclosure fan by controlling the amount of power the at least one enclosure fan receives.

US Pat. No. 10,439,431

METHOD TO REDUCE INRUSH CURRENTS IN A TRANSFORMER-LESS RECTIFIER UNINTERRUPTIBLE POWER SUPPLY SYSTEM

Vertiv Corporation, Colu...

1. A method of reducing inrush currents in a transformer-less rectifier UPS system when an input circuit breaker of the UPS system is transitioned from an open to a closed position, the circuit breaker coupled between an AC power input and an AC input of a main rectifier of the UPS system, a DC output of the main rectifier coupled to a DC bus of the UPS system and an input of an inverter coupled to the DC bus, the method comprising:before the circuit breaker is transitioned to the closed position from the open position, charging the DC bus to a DC voltage having a DC voltage level that is equal to an AC voltage level of line-line AC voltage of AC input power to the UPS system, operating the main rectifier as an inverter to provide an AC output voltage at the AC input of the main rectifier and regulating this AC output voltage to be equal to an AC voltage at the AC power input; and
closing the circuit breaker when the AC voltage at the AC input of the main rectifier is equal to the AC voltage at the AC power input.

US Pat. No. 10,404,094

SYSTEM AND METHOD FOR POWER SHARING IN A MULTIPLE UPS SYSTEM

Vertiv Corporation, Colu...

1. A load sharing system comprising:a plurality of power supplies for powering a plurality of corresponding loads, each one of the plurality of power supplies being associated with at least one of the loads for powering its associated said load;
a power bus;
a plurality of inductors each connected to the power bus at first ends thereof, each one of the plurality of inductors further being connected at second ends to one another, and further coupled at the second ends to at least one of the loads and at least one of the power supplies, such that each adjacent pair of the inductors is connected in parallel relative to the at least one of the loads and to the at least one of the power supplies; and
each of the inductors having an inductance value sufficient so that if a fault develops on the power bus, each said inductor operates to isolate the power supplies from the power bus; and
the inductance value further being such that if any one of the power supplies fails, the specific adjacent pair of the inductors coupled in parallel to the one of the loads associated with the failed power supply allows the one load to draw power over the power bus from other ones of the power supplies through the specific adjacent pair of the inductors.

US Pat. No. 10,408,712

SYSTEM AND METHOD FOR ENERGY ANALYSIS AND PREDICTIVE MODELING OF COMPONENTS OF A COOLING SYSTEM

Vertiv Corporation, Colu...

1. A method for analyzing performance of a chilled water (CW) system having a plurality of CW components, the method comprising:using a processor to analyze a collection of at least one of allowable operating points, allowable operating ranges or allowable operating conditions, for each one of the plurality of CW components of the CW system;
generating an electrical signal representative of at least one of a user set or system measured ambient wet bulb (WB) temperature for an environment in which at least a subplurality of the CW components are located;
using the processor to read the electrical signal and to analyze at least one of the user set or system measured ambient wet bulb (WB) temperature for the environment;
using the processor to calculate equivalent loop conditions for each of the CW components covering a load being thermally managed by the CW system, the equivalent loop conditions relating to a selected performance parameter for at least a subplurality of the CW components covering the load in a manner to manage cooling of the load; and
for each one of the calculated equivalent loop conditions, using the processor to generate information for balancing the CW components by selecting specific operating points of the CW system, given the user set or system measured WB temperature, to meet load requirements imposed by the load;
further comprising using the processor to analyze data from performance data tables for each one of the CW components of the CW system, the performance data tables defining at least one of operating points or operating ranges for each of the CW components based on at least one of an input or an output associated with each of the CW components, and from the performance data tables using the processor to collect the at least one of allowable operating points, allowable operating ranges or allowable operating conditions; and
wherein the operation of using the processor to generate information for balancing the CW components comprises using the processor to analyze the data and to generate a plurality of lists which include set points for each of the CW components, for every available balance point of the CW system that enables the CW system to meet the load requirements given the user set or system measured WB temperature; and
using the processor to evaluate the plurality of lists and set points for each of the CW components and to control adjustment of one or more of the CW components to optimize operation of the CW system.

US Pat. No. 10,466,767

METHOD AND APPARATUS TO RETRIEVE DATA FROM POWER DISTRIBUTION UNITS

Vertiv Corporation, Colu...

1. An apparatus for retrieving data from a power distribution unit, comprising:a power distribution unit, the power distribution unit including a housing and at least one power receptacle configured to supply power, the at least one power receptacle contained within the housing, the power distribution unit further comprising a tracking circuitry, the tracking circuitry including a sensor to measure operating information; and
a monitoring device, the monitoring device configured to be contained within the power distribution unit, the monitoring device including a processor, a memory and a display, wherein the monitoring device is configured to be coupled with the tracking circuitry of the power distribution unit to obtain the operating information for the power distribution unit and convert the operating information into a stream of character sets, wherein each character set includes a plurality of characters in a form of hexadecimal digits, the stream of character sets is presented on the display as individual character sets flashing at a frequency of 9 Hz 15 Hz and not readable to a human eye, the operating information including device identification information, time stamp information, voltage, current, and power available at various circuits of the power distribution unit,
wherein a camera device of a mobile device is configured to read the stream of character sets on the display,
wherein the mobile device is configured to verify a cyclic redundancy check data and convert the stream of character sets on the display of the monitoring device into human readable information presented on a display of the mobile device, the human readable information is only presented when the cyclic redundancy check data has been verified.

US Pat. No. 10,465,963

COOLING SYSTEM WITH DIRECT EXPANSION AND PUMPED REFRIGERANT ECONOMIZATION COOLING

Vertiv Corporation, Colu...

1. A cooling system, comprising:a cabinet having an air inlet and an air outlet;
an air moving unit disposed in the cabinet;
a first cooling circuit that is a direct expansion cooling circuit having only a direct expansion cooling mode, a second cooling circuit that is a pumped refrigerant economization cooling circuit having only a pumped refrigerant economization cooling mode, and a third cooling circuit having both a pumped refrigerant economization cooling mode and a direct expansion cooling mode;
a controller configured to operate the cooling system including the cooling circuits;
the first cooling circuit having a first cooling circuit evaporator coil, a first cooling circuit condenser coil, a first cooling circuit compressor and a first cooling circuit expansion device;
the second cooling circuit having a second cooling circuit evaporator coil, a second cooling circuit condenser coil and a second cooling circuit liquid pump;
the third cooling circuit having a third cooling circuit evaporator coil, a third cooling circuit condenser coil, a third cooling circuit compressor, a third cooling circuit liquid pump, a third cooling circuit liquid pump bypass valve that bypasses the third cooling circuit liquid pump when the third cooling circuit liquid pump bypass valve is open, a third cooling circuit compressor bypass valve that bypasses the third cooling circuit compressor when the third cooling circuit compressor bypass valve is open, and a third cooling circuit expansion device coupled between the third cooling circuit liquid pump bypass valve and the third cooling circuit evaporator coil;
an evaporator disposed in the cabinet that includes the first cooling circuit evaporator coil, the second cooling circuit evaporator coil and the third cooling circuit evaporator coil, wherein the evaporator coils are arranged so that air to be cooled passes across the evaporator coils in serial fashion;
a first condenser that includes the first cooling circuit condenser coil and the second cooling circuit condenser coil arranged so that cooling air passes across said condenser coils in serial fashion and a second condenser that includes the third cooling circuit condenser coil; and
wherein when the third cooling circuit is operated by the controller in its direct expansion cooling mode the controller is configured to have the third cooling circuit compressor on with the third cooling circuit compressor bypass valve closed and the third cooling circuit liquid pump is off and bypassed with the third cooling circuit liquid pump bypass valve open and when the third cooling circuit is operated by the controller in its pumped refrigerant economization cooling mode the controller is configured to have the third cooling circuit compressor off and bypassed with the third cooling circuit compressor bypass valve open and the third cooling circuit liquid pump on with the third cooling circuit liquid pump bypass valve closed.

US Pat. No. 10,454,383

BIDIRECTIONAL RESONANT DIRECT CURRENT-DIRECT CURRENT CONVERSION CIRCUIT AND UNINTERRUPTIBLE POWER SUPPLY

Vertiv Corporation, Colu...

1. A bidirectional resonant direct current-direct current conversion circuit, comprising:a full-bridge conversion module;
a transformer; and
a half-bridge conversion module, wherein
the full-bridge conversion module is coupled to the half-bridge conversion module via the transformer;
the full-bridge conversion module is configured to convert two-level direct current power into alternating current power, and the half-bridge conversion module is configured to convert the alternating current power outputted by the full-bridge conversion module into three-level direct current power; and
the half-bridge conversion module is further configured to convert three-level direct current power into alternating current power, and the full-bridge conversion module is further configured to convert the alternating current power outputted by the half-bridge conversion module into two-level direct current power.

US Pat. No. 10,445,906

SYSTEM AND METHOD FOR INFERRING OR PROMPTING HVAC ACTIONS BASED ON LARGE DATA STANDARD DEVIATION BASED METRIC

Vertiv Corporation, Colu...

1. A computer based monitoring system for collecting, analyzing and presenting temperature information from sensors associated with an HVAC system, the system comprising:a network;
a wireless gateway in communication with the network, the wireless gateway receiving electrical signals from a plurality of sensors being used to sense temperature information;
a processor in communication with the network for communicating with the plurality of sensors via the wireless gateway and obtaining temperature data in the form of electrical signals being reported by each of the sensors;
a graphical user interface (GUI) module embodied in a non-transient processor readable medium and configured to run on a computing device having a display screen, the GUI module configured to generate in real time a graphic on the display screen pertaining to data obtained from the sensors by the processor, the graphic including:
a first component having a first indicia indicating a first subportion of the plurality of sensors that are indicating a temperature which is within a predetermined temperature range;
a second component having a second indicia indicating a second subportion of the plurality of sensors that are indicating a temperature which is below a predetermined lower limit;
a third component having a third indicia indicating a third subportion of the plurality of sensors that are indicating a temperature which is above a predetermined upper limit; and
wherein the first component, the second component and the third component are all integrated for simultaneous display into at least one of:
a bar graph; or
a circular dial graph; and
wherein the GUI module of the system uses information supplied by the processor to determine and present different types of numerical information at different locations around the first, second and third components, such that the different types of numerical information are located adjacent associated ones of the first, second and third components, depending on the dimensions of the first, second and third components, and moved in accordance with changing dimensions of the first, second and third components, to help control operation of the HVAC system.

US Pat. No. 10,541,501

APPARATUS FOR PROVIDING POWER FOR MULTIPLE TYPES OF PLUGS VIA A SINGLE RECEPTACLE

Vertiv Corporation, Colu...

1. A receptacle assembly, comprising:a receptacle, the receptacle including at least three electrical terminals contained within a receptacle housing, wherein the at least three electrical terminals of the receptacle are configured to connect with one plug of multiple types of plugs, the multiple types of plugs including a C14 plug and a C20 plug, the receptacle housing including a flange at a base of the receptacle housing to provide a more secure fit between the receptacle housing and one plug of multiple types of plugs, the multiple types of plugs including the C14 plug and the C20 plug.

US Pat. No. 10,502,470

SYSTEM AND METHOD TO MAINTAIN EVAPORATOR SUPERHEAT DURING PUMPED REFRIGERANT ECONOMIZER OPERATION

Vertiv Corporation, Colu...

1. A method for controlling a level of superheat during a pump mode of operation of a refrigeration system, wherein the refrigeration system is able to operate in either the pump mode or a compressor mode of operation and includes an electronically controlled expansion valve (EEV), the method comprising:using a controller to obtain a stored, predetermined pump differential pressure range able to be produced by a pump of the refrigeration system;
using the controller to obtain a stored, predetermined superheat temperature range;
detecting a superheat level;
determining that the detected superheat level is outside of the predetermined superheat temperature range, and then using the controller to command adjusting at least one of the EEV and a speed of the pump based on whether the superheat level is above or below the predetermined superheat range, and whether a current pump differential pressure is above or below the predetermined pump differential pressure range; and
further comprising detecting that the superheat level is below a lower limit of the predetermined superheat range, and that a pump pressure differential is within the predetermined pump differential pressure range, and then closing the EEV by a fixed predetermined percentage and maintaining a current pump speed to maintain a current value of the pump differential pressure.

US Pat. No. 10,557,641

ADAPTIVE PID CONTROL FOR CHILLED WATER CRAC UNITS

Vertiv Corporation, Colu...

1. A computer room air conditioning (CRAG) unit incorporating a proportional, integral, derivative (PID) control system for controlling a cooling component of a cooling unit to assist in controlling a supply air temperature of air discharged from the CRAC unit, the system including:a supply air temperature sensor;
a PID controller in communication with the supply air temperature sensor;
a memory in communication with the PID controller;
a plurality of look-up tables stored in the memory and setting forth different proportional “P”, integral (“I”) and derivative (“D”) gains based on an operating variable associated with operation of the cooling component of the cooling unit;
the cooling component including an electrically adjustable component being in communication with the PID controller and helping to control performance of the CRAG unit at least in part in response to the supply air temperature; and
wherein the PID controller uses the look-up tables together with a limited slope calculation which defines projected behavior of the operating variable, to adjust at least one of the P, I and D gains in real time, in controlling the cooling component to modify performance of the CRAC unit.

US Pat. No. 10,521,001

SYSTEM AND METHOD FOR RACK MOUNTABLE MODULAR DC POWER UNIT

Vertiv Corporation, Colu...

1. A modular power unit having a form factor enabling mounting in one of a plurality of component locations of an equipment rack, and wherein the equipment rack includes +DC and return DC power busses, to provide direct current (DC) power to a DC bus of the equipment rack which is supplying DC power to one or more equipment components mounted in other ones of the component locations of the equipment rack, the modular power unit comprising:a chassis defining a plurality of slots defining a common form factor into which a plurality of DC power supplies may be inserted, the chassis being insertable into at least one of the plurality of equipment locations of the equipment rack;
the chassis having a rear cover;
an alternating current (AC) module disposed within the chassis for receiving AC power from an external AC power source, the AC module being disposed within the chassis and adjacent the rear cover and spaced from the plurality of slots so as not to interfere with any one of the plurality of slots, and the AC module enabling coupling with an AC power cable extending through an opening in the rear cover;
a plurality of independent, modular DC power supplies each having the common form factor enabling insertion and mounting of each said DC power supply into any one of the slots of the chassis;
a controller having dimensions in accordance with the common form factor, and inserted into one of the slots of the chassis, and being in communication with the plurality of DC power supplies;
a +DC bus and a DC bus both housed within the chassis rearwardly of the slots and forwardly of, and adjacent to, the AC module, such that the AC module is disposed rearwardly of the +DC bus and the ?DC bus, and does not interfere with any one of the plurality of slots in the chassis, the +DC bus and the DC bus both having portions that project outwardly through the rear cover of the chassis, and further configured to engage with +DC bus and the return DC bus of the equipment rack as the chassis is inserted into the at least one of the plurality of equipment locations of the equipment rack, the +DC bus and the ?DC bus within the chassis both being in communication with the DC power supplies, for supplying DC output power from the DC power supplies to +DC bus housed within the equipment rack; and
wherein the modular DC power supplies can each be removed and inserted into different ones of the plurality of slots without a need to uncouple the chassis from the +DC bus and the return DC bus of the equipment rack.

US Pat. No. 10,523,031

METHOD AND DEVICE FOR CONTROLLING TWO-WIRE DISCHARGE CIRCUIT OF BATTERY

Vertiv Corporation, Colu...

1. A method for controlling a two-wire discharge circuit of a battery, comprising:determining a positive-bus voltage and a negative-bus voltage in the two-wire discharge circuit of the battery, and comparing the positive-bus voltage with the negative-bus voltage to obtain a first voltage difference signal;
regulating the first voltage difference signal by a proportional integral (PI) regulator, to obtain a first pulse width modulation (PWM) signal;
for each of first discharge branches in the two-wire discharge circuit of the battery, taking a sum of the first PWM signal and a determined initial master control PWM signal corresponding to the first discharge branch as an adjusted master control PWM signal corresponding to the first discharge branch, and performing drive control on a switch transistor for controlling a charge-discharge time period of a bus capacitor in the first discharge branch by the adjusted master control PWM signal corresponding to the first discharge branch, wherein a terminal of the first discharge branch is connected to a positive electrode of a power supply in the two-wire discharge circuit of the battery, and the other terminal of the first discharge branch is connected to a system neutral point; and
for each of second discharge branches in the two-wire discharge circuit of the battery, taking a difference between a determined initial master control PWM signal corresponding to the second discharge branch and the first PWM signal as an adjusted master control PWM signal corresponding to the second discharge branch, and performing drive control on a switch transistor for controlling a charge-discharge time period of a bus capacitor in the second discharge branch by the adjusted master control PWM signal corresponding to the second discharge branch, wherein a terminal of the second discharge branch is connected to a negative electrode of the power supply in the two-wire discharge circuit of the battery, and the other terminal of the second discharge branch is connected to the system neutral point;
wherein for any one of the discharge branches, the initial master control PWM signal corresponding to the discharge branch is obtained by controlling the two-wire discharge circuit of the battery in a dual-loop control manner comprising a full-bus voltage outer loop and a closed loop of an average value of inductor currents in the two-wire discharge circuit of the battery, or by controlling the discharge branch in a dual-loop control manner comprising a full-bus voltage outer loop and a closed loop of an actual value of an inductor current in the discharge branch.

US Pat. No. 10,660,241

COOLING UNIT ENERGY OPTIMIZATION VIA SMART SUPPLY AIR TEMPERATURE SETPOINT CONTROL

Vertiv Corporation, Colu...

8. A system for controlling a supply air temperature adjustment for a cooling unit to optimize operation of the cooling unit with respect to room air temperature and humidity requirements, the system comprising:a controller configured to implement:
a machine learning module configured to select which portion or portions of acquired data pertaining to operation of the cooling unit are utilized;
a neural network model which uses information supplied by the machine learning module and learns an operational behavior of the cooling unit, and wherein the machine learning module performs supervised learning and regression for the neural network model;
the neural network model using information supplied by the machine learning module for generating an output;
the neural network model having a Unit Power neural network module which receives inputs from at least one other neural network models including:
a remote air temperature (RET) neural network model representing a rack inlet temperature of the cooling unit, the RET neural network model providing an output to the unit power neural network module; or
a return air temperature (RAT) neural network model for representing a temperature of air being returned to the cooling unit; or
a supply air temperature (SAT) neural network model for representing a temperature of air being generated and output by the cooling unit; and
an optimization module which receives the output from the neural network model and which implements a global optimization routine, using unit power consumption of the cooling unit as an objective function, to produce a supply air temperature set point for use by the cooling unit which optimizes an operating parameter of the cooling unit.

US Pat. No. 10,578,328

SYSTEMS AND METHODS FOR DETECTING DEGRADATION OF A COMPONENT IN AN AIR CONDITIONING SYSTEM

Vertiv Corporation, Colu...

1. A method comprising: determining a cooling system, configured to operate in each of a compressor mode, a reheat mode, a humidification mode, a dehumidification mode and a pump refrigerant economization mode, is operating in a cooling mode, such that the cooling system is not operating in the reheat mode, the humidification mode or the dehumidification mode; determining the cooling system is operating in the compressor mode, such that the cooling system is not operating in the pump refrigerant economization mode; determining the cooling system is at steady-state; in response to the cooling system being operated in the cooling mode and the compressor mode and being at steady-state, performing an evaluation process including evaluating one or more first rules to determine if a degradation symptom exists for the cooling system, wherein the one or more first rules are associated with the cooling system including a single cooling circuit, evaluating one or more conditions, wherein the one or more conditions are associated with the cooling system including dual cooling circuits, and determining if the one or more conditions are satisfied and, as a result of the one or more conditions being satisfied, evaluating one or more second rules to determine if a degradation symptom exists for the cooling system; subsequent to performing the evaluation process, generating a degradation evaluation value to indicate whether the one or more first rules are satisfied or the one or more second rules are satisfied; and based on the degradation evaluation value, generating an alarm signal or performing a countermeasure.

US Pat. No. 10,637,279

METHOD OF MITIGATING EFFECTS OF AC INPUT VOLTAGE SURGE IN A TRANSFORMER-LESS RECTIFIER UNINTERRUPTIBLE POWER SUPPLY SYSTEM

Vertiv Corporation, Colu...

1. A method of mitigating effects of a voltage surge in an AC input voltage to a rectifier of a transformer-less rectifier uninterruptible power supply system that occurs when AC power is restored to an input of the rectifier after an outage wherein the uninterruptible power supply has a DC bus and associated DC bus target voltage, comprising:a. determining with a controller if the AC input voltage is overvoltage and if the AC input voltage is not overvoltage, have the rectifier operated normally; and
b. if the AC input voltage is overvoltage:
i. operating the rectifier with the controller to regulate the DC bus to be at the DC bus target voltage until the voltage surge has passed unless the controller determines that the rectifier has reached a current limit of the rectifier;
ii. if the rectifier reaches the current limit of the rectifier, increasing the DC bus target voltage with the controller by a predetermined amount, then determining with the controller if the DC bus target voltage as increased will exceed a maximum voltage limit of the DC bus and if the DC bus target voltage as increased by the predetermined amount will exceed the maximum voltage limit of the DC bus then setting with the controller the DC bus target voltage to be the maximum voltage limit of the DC bus and if the DC bus target voltage as increased does not exceed the maximum voltage limit of the DC bus then leaving the DC bus target voltage as increased as the DC bus target voltage;
iii. next operating the rectifier to regulate the DC bus to be at the DC bus target voltage for a predetermined period of time; and
iv. after the predetermined period of time, checking with the controller if the AC voltage input is still overvoltage and if the AC input voltage is still overvoltage, repeating steps (b)(i)-(iv) and if the AC input voltage is no longer overvoltage, controlling the rectifier with the controller to ramp the DC bus voltage down to a nominal DC voltage and then having the rectifier operated normally.