Entries |
Document | Title | Date |
20080197704 | Back-Up Power Supply Systems - A back-up power supply system includes, in one embodiment, a threshold detector circuit; a first switching circuit for enabling access to a back-up power source, the first switching circuit comprising at least a first transistor; and an inverting switch coupled between the first switching circuit and the threshold detector circuit, the inverting switch comprising an input and an output, the inverting switch configured to receive a signal at the input, invert the signal, and provide the inverted signal from the output to the first switching circuit, the inverting switch further comprising a delay circuit, the delay circuit configured to provide a substantially-immediate high-output during an off-to-on transition at the output of the inverting switch and a switching delay during an on-to-off transition at the output of the inverting switch, the inverting switch comprising a first resistive branch in parallel to a second branch comprising the delay circuit, the first resistive branch and the second branch connected to respective gates of the first and a second transistor, wherein the threshold detector circuit is configured to cause the first switching circuit to enable access to the back-up power source responsive to a voltage provided by a primary power source dropping below a predetermined threshold. | 08-21-2008 |
20080203817 | Power architecture for battery powered remote devices - Systems and methods that may be employed to provide a high-reliability power architecture for an information handling system and a physically separable (i.e., detachable) remote system. The information handling system may be, for example, a portable information handling system such as a notebook computer. The remote system may be, for example, a battery-powered input or input/output device such as a wireless keyboard configured to wirelessly communicate input/output information with the information handling system, and that is also configured to be physically and electrically coupled to the information handling system to allow a flow of current to be provided from circuitry of the information handling system to circuitry of the remote system. The power architecture may be implemented using multiple (e.g., two) Uninterrupted Power System (UPS) buses. | 08-28-2008 |
20080203818 | Double power sources switching circuit - A double power sources switching circuit comprises a detection unit utilizing a detection chip to detect a voltage state of a first power input terminal to provide a stable and accurate voltage level and output a corresponding signal; a power source switching circuit respectively electronically connected to a power output terminal, a second power input terminal and the detection unit and adapted to output a signal depending on the detection unit to determine whether to switch the second power input terminal to be electrically connected and transmit power to an electronic product using double power sources, therefore, the electronic product can be prevent from being reset or locked in the process of power source switching and the stability of a double power sources switching system can be elevated. | 08-28-2008 |
20080203819 | Energy Storage Device of a Transformer - An energy storage device of a transformer includes a first node formed on a side of a primary end of the transformer, a second node formed on another side of the primary end, a third node, a resistor coupled between the first node and the third node, a diode coupled between the first node and the third node, a first capacitor coupled between the second node and the third node, and a clamping unit coupled between the second node and the third node, for clamping voltage of the first capacitor. | 08-28-2008 |
20080203820 | Backup power system - The subject matter of the invention is a backup power system configured to be a UPS system, with a customer generation system ( | 08-28-2008 |
20080203821 | POWER SYSTEM - A power system is designed for providing reliable electrical power to a telecommunications facility and/or associated devices. The system includes a DC bus adapted to receive electrical power from a primary energy source. A switch is provided for switching from the primary energy source to a secondary energy source. Additionally, the system includes one or more capacitors electrically connected into the DC bus. The one or more capacitors hold a charge so that power is maintained to the DC bus as a switch is made from the primary energy source to the secondary energy source. | 08-28-2008 |
20080231118 | ON-DEMAND UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (“UPS”) is provided with a backup power supply that has an adjustable reserve power level that is based on a user's input. The UPS provides reserve power that can later be utilized to reactivate the UPS after a shutdown or deactivation state has occurred, when a user demand for reserve power is received. The UPS utilizes a rechargeable battery that can supply stored AC power when the AC power line input voltage level falls below a threshold level and a shutdown has occurred. The user can adjust the reserve level in proportion to her input and the user can later reactivate the UPS to supply stored AC power for a period of time. In one embodiment, the user can execute computer code on her computer that can remotely adjust the reserve power level, based on a measurement of the backup power available from the UPS. | 09-25-2008 |
20080246339 | Self-powered home automation installation and its method of operation - A method of operation of an electric self-powered home automation installation ( | 10-09-2008 |
20080265679 | TRANSFER SWITCH SYSTEM WITH NEUTRAL CURRENT MANAGEMENT - An electrical power transfer system for selectively connecting a load to a first power source or a second power source includes a first switch having an input selectively connected to the first power source and an output connected to the load. A second switch includes an input and an output connected to the load. An isolation device has its input connected to the second power source and its output connected to the input of the second switch to provide a continuous neutral path for the second power source and to isolate a neutral current path of the load from the second power source. | 10-30-2008 |
20080290732 | POWER SWITCH SYSTEM - A power switch system ( | 11-27-2008 |
20080303346 | SYSTEM AND METHOD FOR A POWER SUPPLY DEVICE - A power supply apparatus is disclosed herein. The power supply apparatus includes a power output, a first power source selectively connectable to the power output, and a second power source selectively connectable to the power output. A switch is configured to couple the first power source with the power output until the first power source becomes substantially depleted. The switch is also configured to couple the second power source with the power output after the first power source becomes substantially depleted. An indicator is configured to precisely convey the amount of power remaining in the power supply apparatus after the first power source becomes substantially depleted. | 12-11-2008 |
20080303347 | METHOD AND APPARATUS FOR MAINTAINING UNINTERRUPTIBLE POWER SUPPLIES - A system and method of isolating an uninterruptible power supply system is disclosed that comprises bypassing an inverter section of the power supply to couple primary power to a load bus; and, thereafter, isolating the power supply by simultaneously uncoupling the power supply from the load bus and coupling the primary power to the load bus. | 12-11-2008 |
20080309166 | METHOD OF CONTROLLING A PLURALITY OF UPS UNITS IN AN ON-LINE UPS SYSTEM AND ON-LINE UPS SYSTEM HAVING A PLURALITY OF UPS UNITS - Parallel-connected UPS units of an online UPS system, which are each connected on the input side via a choke coil to an AC mains, in disconnectable fashion, and on the output side to a common load bus and whose supplied powers are individually variable, are disconnected from the AC mains in the event of a failure of the AC mains, at least if they are affected by the failure, and are successively reconnected to the AC mains after the restoration of the AC mains. In this case, in order to match the powers supplied by the individual UPS units to one another, while some of the UPS units are connected on the input side to the AC mains and others of the UPS units are not connected on the input side to the AC mains, a phase angle Δφ between the AC mains and the load bus is determined, and the power supplied by each of the UPS units which have not yet been reconnected to the AC mains is adjusted as a function of this phase angle Δφ. | 12-18-2008 |
20090001815 | Electrical Power Supply Apparatus - An electrical power supply apparatus has at least one electrical load connection to which an electrical load can be connected. A first electrical power supply connection can be connected to a mains supply network. A second electrical power supply connection is connected to an autonomous electrical power supply, such as a photovoltaic system. A switching apparatus switches the connection of the at least one electrical load connection to the first electrical power supply connection in mains operation or to the second electrical power supply connection in island operation. In order to improve the energy management during island operation, the at least one electrical load connection has at least one associated evaluation and control apparatus, which identifies the island operation of the electrical power supply apparatus and switches the at least one electrical load connection on or off, at least during island operation, as a function of preset criteria. | 01-01-2009 |
20090009000 | Adjustable Speed Drive System For Primary Loop Recirculation Pump - An adjustable speed drive system for a primary loop recirculation pump and method of control in which a first breaker is connected to an auxiliary power supply system, an inverter is connected to the first breaker, a second breaker is connected to an output of the inverter, a gate driver supplies a gate pulse to the inverter, and an inverter control portion drives the gate driver. The adjustable speed drive system is combined with a backup adjustable speed drive system. When a malfunction in a main adjustable speed drive circuit portion including the inverter and the gate driver in the adjustable speed drive system used in a normal operation is detected, the main adjustable speed drive circuit portion is switched to the backup adjustable speed drive system, and an operation of a recirculation pump motor for driving a recirculation pump that controls a flow of a reactor core is continued. | 01-08-2009 |
20090033153 | SCALABLE DISTRIBUTED REDUNDANCY - A scalable power distribution system for a data center and methods for scaling a power distribution system are described. The scalable power distribution system includes a transformer that is connected to a load at its output. The input of the transformer is connected to two isolation switches. A source is connected to one switch at all times, and the source can be switched without affecting power to the load by synchronizing the two sources at the transformer before switching sources. The load is not de-energized at any time during the transfer process. | 02-05-2009 |
20090039705 | DEPLOYABLE POWER SUPPLY SYSTEM - A self-contained conveyable power unit for producing 12V/24V, 110V AC, and 220V AC electricity at a desired location independent of external power sources integrates within one weather-resistant molded nonmetallic material based housing a power generating device of a selectable combination of a renewable energy type (e.g., solar), power management devices, power storage devices and management reporting devices. Additional optional power generating devices, renewable or of traditional fuel type, can be contained within or coupled to the housing. The system includes devices or an array of devices contained within the housing for the storage of electrical power. A device for power management is contained within the housing as is networking equipment of wireless or wired type for remote system observation and reporting. The system and housing are modular and configured to produce power using any combination of renewable and non-renewable energy resources. The conveyable power unit may provide easy access to different types of power outputs and inputs and be coupled with like appliances in a ‘daisy chain’ or network of power. Given its molded composite material construction and scaleable design, the appliance may be readily fabricated in a variety of sizes for varied applications. Further, the molded housing of composite material construction is designed for resistance to the elements, light weight and strength. | 02-12-2009 |
20090039706 | INPUT AND OUTPUT POWER MODULES CONFIGURED TO PROVIDE SELECTIVE POWER TO AN UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed. | 02-12-2009 |
20090058186 | PORTABLE GENERATOR INTERCONNECTION DEVICE FOR TRAFFIC SIGNAL - When utility power has been lost at a controlled traffic intersection, an emergency interconnection circuit having no internal power of its own provides emergency electrical power to the traffic light controller by means of a portable generator. A maintenance technician can provide a portable generator and cord that plugs in to the emergency interconnection circuit. Upon throwing an internal switch, the interconnection circuit provides emergency generator power to operate the traffic light until utility power has been restored. | 03-05-2009 |
20090079266 | Electrical Power Distribution System and Method Thereof - An auxiliary electrical power system for providing auxiliary power to an electrical power distribution system containing a plurality of loads and a plurality of primary power sources, wherein each of the primary power sources is electrically connected to one or more of the plurality of loads. In one embodiment, the auxiliary electrical power system includes a generator electrically connected to the plurality of loads. A plurality of power converters are electrically connected between the generator and corresponding respective ones of the plurality of loads. Other embodiments of the auxiliary electrical power system have multiple generators electrically connected to ones of the plurality of loads via corresponding power converters. Methods of implementing an auxiliary electrical power system are also disclosed, as is an arrangement for increasing the reliability of power to a load through a connection with a parallel utility. | 03-26-2009 |
20090127932 | INTELLIGENT AUXILIARY POWER SUPPLY SYSTEM WITH CURRENT AND TEMPERATURE MONITORING CAPABILITIES - An intelligent auxiliary power supply system for supplying power to a load such as a furnace or air handler using a rechargeable power source. An intelligent controller determines appropriate periods for switching to auxiliary power, thus allowing the user to realize increased energy related cost savings. A plurality of sensors including a current transducer, an indoor and outdoor temperature sensor, and a clock transmit information to the intelligent controller. Implementing user configured algorithms, the intelligent controller continuously compares information transmitted from said sensors and said load, to information inputted by the user via an electronic device to determine the appropriate power configuration. A remote electronic device may also be connected to the system, allowing the user to control the system while not in close proximity to said system and also allowing the user's energy provider to send requests to switch to auxiliary power. | 05-21-2009 |
20090134703 | APPARATUS, SYSTEM, AND METHOD FOR A LOW COST MULTIPLE OUTPUT REDUNDANT POWER SUPPLY - An apparatus, system, and method are disclosed for a low cost multiple output redundant power supply. Disclosed is a power supply that includes a primary stage for regulating voltage on an internal bus. The power supply includes a first regulator stage and a second regulator stage connected to the internal bus. The first regulator stage regulates voltage on a bus configured to connect to a first system. The second regulator stage regulates voltage on a bus configured to connect to a second system. The each regulator stage continues to operate in the event the other regulator stage is not operating. A disconnecting means is connected between the primary stage and the each regulator stage for isolating the failed regulator stage from the other regulator stage and the primary stage. | 05-28-2009 |
20090146496 | Temporary Voltage Supply - A temporary voltage supply for a consumer includes a switching device with an auxiliary power supply; a control device supplied by the auxiliary power supply if an operating power supply fails; and a switching device which is activated by the control device and actuates the consumer via auxiliary power from the auxiliary power supply. The auxiliary power supply is configured in such a manner that, upon request, by actuation of a switch, the control device is provided with a sufficient amount of power for a final operating sequence after the operating power supply fails. | 06-11-2009 |
20090146497 | Smart Power Switch For Broadband Communications Network - A power switching module provides power to a line amplifier in a broadband telecommunications network. The switch includes a first input port for connection to a first power source, a second input port for connection to a second power source, an input/output port for connection to a cable connecting the line amplifier with a remote amplifier, and an output port for connection to the line amplifier. A controller controls selection of the power source and provides power to the line amplifier from one the input ports and can provide power to, or receive power from, a power supply associated with the remote amplifier via the input/output port. A switch allows selection of a primary mode of operation or a secondary mode of operation. Another switch allows selection of a first operating voltage range or a second voltage operating range. A monitoring circuit communicates status information about the switching module to a remote location. Monitored parameters include, for example, power supply status, module humidity and temperature. | 06-11-2009 |
20090167089 | APPARATUS, SYSTEM, AND METHOD FOR A HIGH EFFICIENCY REDUNDANT POWER SYSTEM - An apparatus, system, and method are disclosed for a high efficiency redundant power system. First and second power supplies are connected in parallel to power a load. Each power supply includes a primary stage and a regulator stage. Each primary stage regulates voltage on an internal bus that is input for each regulator stage. Each regulator stage regulates a regulated bus connected to the load. A power meter detects power provided to the load and determines if the provided power is below a predefined power threshold. A regulator control module shuts down the regulator stage of the first power supply after the provided power falls below the predefined power threshold so the second power supply powers the load and the primary stage of the first power supply remains operational. A recovery module starts up the regulator stage of the first power supply after failure of the second power supply. | 07-02-2009 |
20090167090 | ENERGY SUPPLY SYSTEM AND METHOD RELATED THERETO - An energy supply system adapted for supplying energy to equipment on a high voltage platform. The system includes a fuel cell and an effectuating capacitor. The system also includes an intermediate storage and supply unit. This unit stores energy from the fuel cell and supplies energy to the effectuating capacitor via an electric transforming unit. A high voltage platform including the energy supply system. An electrical network including the platform. A method for supplying energy to equipment on a high voltage platform. | 07-02-2009 |
20090174258 | Built-in uninterruptible power supply system and electronic device using the same - A built-in uninterruptible power supply system and an electronic device using the same are provided. The built-in uninterruptible power supply system supplies power to an electronic component of an electronic device. The built-in uninterruptible power supply system includes a power supply, a power storage, a power supply switch and a power display. The power supply switch electrically couples the power supply with the power storage. The power supply switch switches to transmit a first power or a second power to the electronic component. The power display is disposed in the casing and electrically coupled with the power storage for displaying a storage power of the power storage. When the external power source stops supplying power to the power supply, the power supply switch switches to transmit the second power from the power storage to the electronic component. | 07-09-2009 |
20090179493 | Power selection system for heater - A power selection system is provided for a heater system, including a power selection device, an interface unit, and a heater. The power selection device includes a distribution selector and an uninterrupted power supply device. The distribution selector is arranged inside the uninterrupted power supply device. The distribution selector controls selection of power input of the power selection device among multiple power sources. The interface unit is connected to the power selection device. The heater includes a power system, which is connected to the interface unit. As such, the system, as a whole, can be arranged in accordance with the user's need to receive a power input or a combination of multiple power inputs selected from multiple power sources in different periods of time and is fit for heaters of different brands available in the market. | 07-16-2009 |
20090184582 | Dual-power supplying system with circuit loop switching control circuit - An automatically switchable dual-power-circuit-loop circuit system selectively supplies a first power source through a first voltage output circuit loop to an output terminal, and a second power source is selectively supplied through a second voltage output circuit loop to the output terminal. A switching control circuit functions to detect the first output voltage of the first voltage output circuit loop. When the first output voltage regularly supplies electrical power, the first power source is supplied through the first voltage output circuit loop to the output terminal, while the switching control circuit generates a switching signal to switch a switching element to an open-circuit condition thereby cutting off the second voltage output circuit loop. When the first power source fails to supply power, the switching element is set in a closed-circuit condition to allow the second power source to be supplied through the second voltage output circuit loop to the output terminal. | 07-23-2009 |
20090189450 | DUAL-CHANNEL LOAD SWITCH CIRCUITS, DEVICES INCLUDING A DUAL-CHANNEL LOAD SWITCH CIRCUIT AND METHODS OF SWITCHING LOAD CHANNELS - A dual-channel load switch circuit may be provided for switching between first and second sources that generate respective input voltages. The circuit may include first and second channels adapted to receive the respective input voltages and to supply respective output voltages to a load element based on the respective input voltages. The first and second channels may each include first and second switching elements and first and second control circuitry. The second channel may include a diode in parallel with the second switching element and may be coupled to the first control circuitry. The circuit may include a reservoir element coupled to the first and second channels and configured to store a potential when one of the first and second channels supplies a respective output voltage to the load element and to apply the potential to the load element when neither output voltage is being supplied to the load element. | 07-30-2009 |
20090206668 | UNINTERRUPTIBLE COOLING SYSTEM AND APPARATUS - A cooling system and power control apparatus provides an uninterruptible power supply. In one embodiment, the uninterruptible power supply provides power to an air conditioning system for cooling telecommunications equipment in the case of an AC power failure. Embodiments of the present invention include a first port configured for coupling with a primary power supply; a second port configured for coupling with a secondary power supply, wherein the secondary power supply is a backup power source that allows the cooling system to operate when the primary power supply exceeds predetermined operating conditions. A power circuit including a DC bus delivers power from the first port and the second port to a plurality of switches for controlling cooling equipment. A control circuit is configured to control power flow from the first port and power flow from the second port to the DC bus and the first plurality of switches. | 08-20-2009 |
20090206669 | Method for Operating a Device with Redundant Power Supply Units and a Power Supply Apparatus with Redundant Power Supply Units - A method for the alternating operation of power supply units for a device which has at least two power supply units is disclosed. An alternating operation of the at least two power supply units is supplied by a switchover between the two power supply units if the two power supply units are functional. With alternating operation, the power supply unit that is in operation contributes to the power supply for the device, whereas the power supply unit that is not in operation, is cut off from supplying power to the device. In the case of a failure of the power supply unit which is in operation at the moment, an immediate switchover between the at least two power supply units is provided for. | 08-20-2009 |
20090206670 | Data Center Uninterruptible Power Distribution Architecture - Apparatus and associated method and computer program products involve a highly efficient uninterruptible power distribution architecture to support modular processing units. As an illustrative example, a modular processing unit includes an corresponding uninterruptible power system in which only one AC-to-DC rectification occurs between the utility AC grid and the processing circuit (e.g., microprocessor) loads. In an illustrative data center facility, a power distribution architecture includes a modular array of rack-mountable processing units, each of which has processing circuitry to handle network-related processing tasks. Associated with each modular processing unit is an uninterruptible power supply (UPS) to supply operating power to the network processing circuitry. Each UPS includes a battery selectively connectable across a DC bus, and a AC-to-DC rectifier that converts an AC input voltage to a single output voltage on the DC bus. The regulated DC bus voltage may be close to the battery's fully charged voltage. | 08-20-2009 |
20090212630 | Apparatus And Method For Powering Load Center Circuits With An Auxiliary Power Source - An electrical distribution system is designed to automatically connect a dedicated group of circuits, which are normally powered by a primary power source, to an auxiliary power source upon detection that there has been a disruption or failure in the primary power source. The system includes a switching arrangement that allows an operator to manually connect the auxiliary power source with other circuits that are not generally powered during disruption of the primary power source. The switching arrangement includes an interlinked switch or breaker arrangement that prevents any of the other circuits that are normally powered by the primary source from being automatically connected to the primary power source when primary power source is restored if those other circuits are connected to the auxiliary power source when the primary power source is restored. | 08-27-2009 |
20090230774 | EXTENDED CONTROLLER KEEP ALIVE SYSTEM AND METHOD - Methods and systems for supplying auxiliary electrical power to a controller during power loss are described hereinabove. The system is powered by a primary power source, and includes a controller and a winding load that are both powered by the primary power source, and a switching device. When the primary power source is disconnected from the controller and winding load, the winding load continues to residually exercise to generate residual electrical power. The second switching device then channels the residual electrical power to the controller for a period of time at an acceptable level. | 09-17-2009 |
20090251005 | UNDERVOLTAGE TRANSFER DETECTION - A method of increasing the reliability of an uninterruptible power supply (UPS) providing AC power to a load, comprising determining the magnitude and duration of an actual undervoltage event in a power output of the UPS; providing a predetermined undervoltage standard establishing at least a range of undervoltage events of acceptable magnitude and duration for the load; comparing the magnitude and duration of the actual undervoltage event with the predetermined standard; and causing the load to be transferred to an alternate source of AC power when the comparison of the actual undervoltage event with the predetermined standard reveals that the actual undervoltage event is not acceptable. | 10-08-2009 |
20090273240 | Uninterruptible fuel cell system - An exemplary method of providing electrical power is provided. A first alternating current is received from a grid. The first alternating current is converted to a first direct current using a first inverter in electrical communication with the grid. The first inverter is also in electrical communication with a fuel cell system. The first direct current is converted to a second alternating current using a second inverter, and the second alternating current is provided to a load. | 11-05-2009 |
20090284074 | Inverter - An inverter includes at least two power sources and an uninterruptible power supply device. The at least two power sources include a mains outlet and fuel, solar energy, wind power, battery (fuel cell) based power generation devices. The uninterruptible power supply device includes a power source selector and a constant-current controller built therein. The uninterruptible power supply device has output terminals connectable to electrical appliances and input terminals connected to the at least two power sources via the power source selector and the constant-current controller. As such, the power source selector and the constant-current controller function to effect distribution and regulation of the at least two power sources for supply of constant current used by the electrical appliances and timed scheduling of the various power sources. | 11-19-2009 |
20090284075 | Structure of inverter - An inverter structure includes a power source and an uninterruptible power supply device. The uninterruptible power supply device includes a power output selector and a constant-current controller built therein. The uninterruptible power supply device has an input terminal connected to the power source and output terminals connectable to external electrical appliance facilities via the power output selector and the constant-current controller. When power is supplied from the power source, the power output selector and the constant-current controller built in the uninterruptible power supply device function to effect distribution of power output to the electrical appliance facilities in accordance with preset condition. | 11-19-2009 |
20100013308 | TRANSFER SWITCH CONTROLLER EMPLOYING ACTIVE INDUCTIVE LOAD CONTROL AND TRANSFER SWITCH INCLUDING THE SAME - A transfer switch controller is for a transfer switch, which cooperates with a plurality of loads including an air conditioner. The transfer switch controller includes a first input structured to input a thermostat start request signal for the air conditioner, a second input structured to determine power consumed by the loads, an output structured to output a start signal to the air conditioner, and a circuit. The circuit cooperates with the first input, the second input and the output. The circuit causes the start signal to be output by the output responsive to the thermostat start request signal of the first input if the determined power consumed by the loads is less than the difference between a predetermined maximum power output of a generator and a previous maximum peak start up power consumed by the air conditioner. | 01-21-2010 |
20100013309 | POWER MANAGEMENT CIRCUITRY AND SOLAR CELLS - This is directed to methods, systems, and apparatuses for implementing circuitry that can be used to control multiple solar cells to generate power for a portable electronic device. For example, in response to determining that one or more of the solar cells is generating a reduce voltage output (e.g., due to a partial obstruction of one or more of the solar cells), the connections among the solar cells can be configured to generate a constant preset voltage, as long as a subset of the solar cells is operating. The voltage generated by the solar cells can then be boosted to a value suitable for powering the portable electronic device and/or any of its individual components. As another example, the connections among the solar cells can be configured to generate a startup voltage to directly power the portable electronic device and/or any of its components. | 01-21-2010 |
20100013310 | Metering pump power source - A power supply system includes an energy generator and an energy storage system, each electrically connected to a power bus. The power bus provides electrical power to a load. The energy generator includes a wind turbine and a solar panel. The energy storage system includes a storage device and a regulator. The regulator is configured to transfer energy from the power bus to the storage device when the power bus exceeds a maximum voltage and to transfer energy from the storage device to the power bus when the power bus drops below a minimum voltage. | 01-21-2010 |
20100052426 | Power management system - A power supply system includes at least one power supply module and at least one redundant power supply module. A power supply module may include a charging resistor in parallel with an OR-ing device to keep all filter capacitors charged as long as at least one power supply module remains operational. This may avoid current spikes at turn on and may enable the redundant module to turn on without using soft start. | 03-04-2010 |
20100066172 | ELECTRONIC DEVICE WITH REDUNDANT FAN CONTROL FUNCTION - An electronic device with redundant fan control function includes a first fan, a first control module, a first power supply, a first switch unit, a second fan, a second control module, a second power supply, and a second switch unit. When the first power supply stops working, the second power supply powers the first fan and the second fan, and the first power supply sends a control signal to turn on the first switch unit to allow a group of control information output by the second control module to control the first fan. Therefore, the first fan and the second fan can work normally to dissipate heat from the electronic device. | 03-18-2010 |
20100084919 | REPLACEMENT SYSTEM OF DISTRIBUTION TRANSFORMERS AND LOW-VOLTAGE POWER LINE WITHOUT OUTAGE - Disclosed herein is a replacement system of a distribution transformer and a low-voltage power line without outage. A distribution-line uninterruptible power supply includes a transformer primary bypass cable, a transformer secondary bypass cable, and a low-voltage power line bypass cable. Further, the uninterruptible power supply includes a combined phase-shifter and three-phase transformer, a transformer primary bypass switch, a transformer secondary bypass switch, a phase-based power adjuster, an energy converter, and a three-phase AC/DC converter. The capacity of the target transformer can be extended to one and half times that of the existing transformer. The energy conversion process of this system allows the utilization ratio of the transformer to be adjusted according to the phases, and has an advantage of extending the replaceable range at a low voltage without outage. Practical equipment can be secured at a low cost by replacing only the transformer in the existing uninterruptible power supply. | 04-08-2010 |
20100096927 | POWER GENERATION SYSTEM AND OPERATION METHOD THEREOF - The invention provides a power generation system having a power generator ( | 04-22-2010 |
20100102633 | CONNECTION BETWEEN MACHINES AND POWER SOURCE - Machines may be connected to power distribution units (PDU/STSs) in such a way that if one PDU/STS fails or is taken out of service, the machines' loads are shifted more-or-less evenly to the other PDU/STSs. Several PDU/STSs may be provided for a group of dual-corded machines. The two cords of each machine are connected to a pair of PDU/STSs. Different pairs of PDU/STSs may be used for different machines. In normal operation, each machine may draw part of its power through each of the two cords. If one PDU/STS to which a machine is connected fails or is taken out of service, the entire load on that machine may be shifted to its remaining cord. Since redistribution may be approximately even across PDU/STSs, tolerance for one PDU/STS failure can be implemented with relatively little over-sizing of the PDU/STSs. | 04-29-2010 |
20100102634 | Uninterruptible power supply and method for selective tripping thereof - UPS performance failure is determined independently by itself. Selective tripping can be done within a shorter time than one cycle of an AC output. A UPS converts a DC voltage to an AC voltage and supplies the AC voltage to a load device. A UPS has a control unit identifying a resistance value of an internal resistance as an internal impedance of the UPS by using an instantaneous value of an internal voltage and current and conducting a failure determination by detecting abnormal fluctuation of the value. It is preferred that an identification of the internal impedance is done through a system identification unit. | 04-29-2010 |
20100127569 | Circuit for Controlling the Operation of a Backup Power Supply - The present invention provides a circuit for controlling the operation of a backup power supply, wherein the circuit comprises a switch unit, a control unit, and a processing unit; wherein the switch unit is configured to be operably coupled to an external power supply; wherein a first input terminal is configured to be operably coupled to a backup power supply, a second input terminal is configured to be operably coupled to the switch unit, the third and fourth output terminals of the control unit are configured to be operably coupled to an input terminal of the processing unit; the fifth and sixth input terminals of the control unit are configured to be operably coupled to a respective output terminal of the processing unit; and the control unit is configured to turn on and off the backup power supply. | 05-27-2010 |
20100141034 | SOLAR ENERGY CONVERTING DEVICE AND POWER SUPPLY SYSTEM INCLUDING THE SAME - A solar energy converting device includes a frame, a container, a thermal expansion member, a connecting rod, an inductor and magnetic members. The frame defines an opening. The container is positioned on an inner surface of the frame and positioned adjacent to the opening. The container defines a thermally sealed void space filled with an inert gas. The thermal expansion member is positioned on the container and partially surrounded by the container. The connecting rod has an end connected to the thermal expansion member. The magnetic members are positioned on the inner surface of the frame and configured for generating a magnetic field. The inductor coils around the connecting rod and is positioned among the magnetic members. The inductor is configured for being driven by the thermal expansion member to move back and forth in the magnetic field so as to generate a voltage. | 06-10-2010 |
20100141035 | METHOD AND APPARATUS FOR PROVIDING A POWER FACTOR CORRECTION (PFC) COMPATIBLE SOLUTION FOR NONSINUSOIDAL UNINTERRUPTIBLE POWER SUPPLY (UPS) - Methods and apparatuses for providing a solution for incompatibility between nonsinusoidal waveform uninterruptible power supply (UPS) systems and active power factor correction (PFC) loads are disclosed. An embodiment of the invention includes generating a nonsinusoidal signal waveform (e.g., a voltage waveform), to be delivered to the load, with a pulse width modulation (PWM) duty width, sampling the nonsinusoidal signal waveform to collect output signal samples, and adjusting the duty width to control the nonsinusoidal signal waveform as a function of the output signal samples to deliver a desired signal characteristic (e.g., RMS signal level) to the load. In embodiments of the invention, the output duty width is adjusted differently in cases of rising and falling power consumption, respectively, by the load. Techniques disclosed herein find broad applicability in UPS systems and inverters and improve efficiency and reliability for end users and utility providers. | 06-10-2010 |
20100141036 | UNINTERRUPTIBLE A/C POWER SUPPLY TRANSFER UNIT - A power transfer device ( | 06-10-2010 |
20100141037 | POWER SUPPLY DEVICE AND METHOD OF CONTROLLING THE SAME - Provided are a power supply device and a method of controlling the same. The power supply device includes: a power factor corrector which corrects a power factor of an initial power; a standby power supply unit which is connected to the power factor corrector, the standby power supply unit including a transformer which converts an input power received from the power factor corrector to a predetermined level of a standby power and comprises first and second coils; a sensor which is coupled to the second coil of the transformer and detects a level of an induced power corresponding to the input power; and a power supply controller which determines whether the level of the induced power exceeds a critical value when a system-on signal is received, activates the power factor corrector to correct the power factor of the initial power if the level of the induced power exceeds the critical value, and supplies a driving power to the system based on the level of the induced power detected after the power factor corrector is activated. | 06-10-2010 |
20100141038 | AUTOMATIC TRANSFER SWITCH MODULE - An automatic transfer switch for automatically switching an electrical load between two power sources that includes a switch module containing circuitry for facilitating the switching function, and having two attached input cables and one attached output receptacle. The switch module may be mounted directly on or adjacent to the back of a piece of rack-mounted equipment, thereby minimizing the probability of a power failure between the switch and the equipment. The switch is relatively small, requires no mounting space within a rack, and requires minimal cord lengths. | 06-10-2010 |
20100187908 | Maintenance Bypass Device - There is provided a maintenance bypass device capable of achieving safety and efficiency in replacing work of a UPS. The maintenance bypass device ( | 07-29-2010 |
20100231048 | POWER SOURCE SWITCHING CIRCUIT - A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit. | 09-16-2010 |
20100276999 | SPRING-POWERED EMERGENCY ELECTRICAL SUPPLY - An emergency power system for operation during loss of power on power mains comprises a spring-driven energy storage unit (ESU) and a generator. The ESU enters a generator mode responsive to a power outage state of a power sensor, during which mode unwinding of the spring drive powers the generator. After power is restored to the mains, a preferred embodiment automatically rewinds the spring using the generator as a motor. | 11-04-2010 |
20100308658 | UNINTERRUPTIBLE POWER SUPPLY APPARATUS - A method of controlling an uninterruptible power supply apparatus (UPS) is provided. The UPS apparatus includes at least an AC input voltage, a DC input voltage and a single-phase AC/AC converter. The single-phase AC/AC converter includes an AC inductor, a bus capacitor, a boost arm, a common arm and a buck arm. The method includes steps of: controlling the bus voltage to have a DC component and full-wave rectifying component, and setting a bus voltage parameter K so that the bus voltage approaches to a full-wave rectifying voltage when K approaches to 1, wherein 0≦K≦1. | 12-09-2010 |
20110001361 | METHOD FOR SUPPLYING A LOAD WITH ELECTRICAL POWER - The present invention relates to a method for supplying at least one load with electrical power. The at least one load is in this case supplied with power from an electrical DC voltage source and/or an electrical AC voltage source. According to the invention, a method is provided for supplying electrical power, in particular for supplying electrical power in parallel with a power supply system on a low-voltage power supply system to at least one load, which method is carried out in an electrical installation which has at least an electrical DC voltage source, an inverter, in particular a bidirectional inverter, a measurement apparatus, in particular a power meter which measures an electrical power of the at least one load, an electrical AC voltage source and a control element, wherein the control element has at least one evaluation unit which analyzes measurement data from the at least one measurement apparatus to determine whether the load power is greater than the power available from the DC voltage source, and wherein, when this condition is satisfied, the control element makes an electrically conductive connection (line connection), in particular by means of a switch, between at least the AC voltage source and the at least one load. | 01-06-2011 |
20110025129 | REDUNDANT POWER SUPPLY SYSTEMS AND METHODS - A redundant power supply method is provided. The method includes communicatively coupling a load to a first source via a plurality of first power supplies and to a second source via a plurality of second power supplies. The method further includes bi-directionally communicatively coupling a controller to the plurality of first power supplies and to the plurality of second power supplies. The method includes activating a first portion of the plurality of first power supplies to supply power to the load, wherein the controller determines the number (“N”) of first power supplies activated, and activating at least one of the plurality of second power supplies to supply power to the load. The method also includes monitoring for at least one fault condition in each of the active first power supplies and in each of the active second power supplies. | 02-03-2011 |
20110049992 | SYSTEMS, METHODS, AND DEVICES INCLUDING MODULAR, FIXED AND TRANSPORTABLE STRUCTURES INCORPORATING SOLAR AND WIND GENERATION TECHNOLOGIES FOR PRODUCTION OF ELECTRICITY - Disclosed are systems, methods, and devices related to fixed and transportable structures and vehicles utilizing the integration of solar and wind technologies for generation of electricity. The system generates electricity using solar panels (and/or solar thermal units) and wind turbines, stores and converts electricity, and can be located in various locations either as fixed or portable embodiments including on land, on water, underwater, air and space and may also be housed in a structure to provide electricity for various facilities and uses. | 03-03-2011 |
20110057514 | POWER METER WITH TRANSFER SWITCH - Apparatus and methods for providing a capability to perform automatic switching between a primary and secondary power source and primary source metering in the same meter enclosure. | 03-10-2011 |
20110101779 | UTILIZATION SYSTEM AND ASSOCIATED METHOD - A system includes an energy storage system capable of receiving electrical energy from an energy source and can supply electrical energy to a first load during a first period and to the first load during a second period. The first load differs in usage rate from the first period relative to the second period. A system controller maintains the energy storage system such that the energy storage system maintains a first amount of stored electrical energy during a first mode, and a second amount of electrical energy during a second mode. The system controller maintains the energy storage system in the first mode during a first portion of the first period, and in the second mode during a second portion of the first period. | 05-05-2011 |
20110109160 | VOLTAGE MONITORING CIRCUIT FOR REDUNDANT POWER SYSTEMS - A redundant power system determines a rate of decline of a voltage supplied by a remote power source. The redundant power system further supplies power from a redundant power source to the remote power source based on the determined rate of decline of the voltage supplied by the remote power source. | 05-12-2011 |
20110133554 | CONVERTER DEVICE AND UNINTERRUPTIBLE POWER SUPPLY EQUIPPED WTIH SUCH A DEVICE - A converter device comprising a power supply input, rectifier means, switching means, control means, and a switching aid circuit, said switching aid circuit comprising inductive means, branch-off means of an input current, and power storage means. The device of the invention is characterized in that the inductive means are essentially formed by a transformer directly connected to the power supply input and comprising reverse-coiled windings, and that the branch-off means comprise auxiliary switching means directly connected between said inductive means and a voltage reference or an output line to establish branch-off of the input current onto said inductive means before main turn-on. | 06-09-2011 |
20110148203 | Smart Power Switch For Broadband Communications Network - A power switching module provides power to a line amplifier in a broadband telecommunications network. The switch includes a first input port for connection to a first power source, a second input port for connection to a second power source, an input/output port for connection to a cable connecting the line amplifier with a remote amplifier, and an output port for connection to the line amplifier. A controller controls selection of the power source and provides power to the line amplifier from one the input ports and can provide power to, or receive power from, a power supply associated with the remote amplifier via the input/output port. A switch allows selection of a primary mode of operation or a secondary mode of operation. Another switch allows selection of a first operating voltage range or a second voltage operating range. A monitoring circuit communicates status information about the switching module to a remote location. Monitored parameters include, for example, power supply status, module humidity and temperature. | 06-23-2011 |
20110198931 | SYSTEMS, DEVICES, AND METHODS FOR PROVIDING BACKUP POWER TO A LOAD - Systems, devices, and methods for providing backup power to a load are disclosed. A power converter may comprise a capacitor array comprising a plurality of capacitors and configured to store a charge from an input during a charge mode of operation and provide a charge to an output during a discharge mode of operation. Further, the power converter may comprise a controller configured to selectively couple the capacitor array to the input during a portion of the charge mode of operation and selectively couple the capacitor array to the output during a portion of the discharge mode of operation. | 08-18-2011 |
20110215644 | SUPERCAPACITOR BACKUP POWER SUPPLY WITH BI-DIRECTIONAL POWER FLOW - A system for providing backup power supply to a device is provided. The system includes a supercapacitor and a single circuit for charging and discharging of a supercapacitor. The single circuit operates with an inductor to provide for charging and discharging of the supercapacitor. | 09-08-2011 |
20110260538 | HIGH RELIABILITY DUAL POWER SOURCES AUTOMATIC SWITCH CIRCUIT AND ISOLATION APPARATUS OF THE SAME - A high reliability dual power sources automatic switch circuit and an isolation apparatus thereof are provided. The dual power sources automatic switch circuit includes a main power source circuit and a backup power source circuit installed respectively in a main circuit automatic switch zone and a backup circuit automatic switch zone which are isolated by a main isolation board in the isolation apparatus. The main and backup power source circuits include manual switches installed in a manual switch zone isolated by a sub-isolation board. The main power source circuit includes a main switch which includes multiple main switch elements coupled in series. The backup power source circuit includes a backup switch which includes multiple backup switch elements coupled in parallel. The invention also includes a power monitor module to monitor abnormal conditions of the main and backup power source circuits, and control the switch elements to perform power supply transfer. | 10-27-2011 |
20110291482 | VBUS POWER SWITCH - This document discusses, among other things, an electronic circuit and method for defaulting to a valid battery supply to power an electronic device. In an example, an electronic circuit can be configured to receive information about the battery supply (e.g., an internal battery), such as the battery supply voltage (V | 12-01-2011 |
20110298287 | PORTABLE TRANSFORMER AND METHOD FOR IMPROVING RELIABILITY OF ELECTRIC POWER DELIVERY - The present invention relates to an apparatus and method for improving the transportation and installation of portable step-up power transformers for a power generating station due to failure or unavailability of installed step up transformers. A large MVA portable transformer may be used to alleviate or minimize these issues by being purpose built for transportability and commissioning speed. The portable transformer is transportable by road or lighter rail. Its size and weight are arranged to overcome restrictions such was weight limits, bridge constraints, and power line constraints. This device may also provide for rapid commissioning and decommissioning. This transformer may be a set of three single-phase units of sufficient size to be used as a generator step up transformer in three-phase operation. | 12-08-2011 |
20120019070 | UNINTERRUPTIBLE POWER SUPPLY DEVICE - An uninterruptible power supply device including a rectifier circuit rectifying output power of an inverter. At a first startup of the inverter, output power of the rectifier circuit is supplied to an electric double-layer capacitor. At second and subsequent startups of the inverter, output power of one of a converter and the rectifier circuit is selectively supplied to the electric double-layer capacitor. Therefore, by controlling the inverter, the electric double-layer capacitor can be precharged easily with a simple configuration. | 01-26-2012 |
20120025613 | ELECTRIC POWER SUPPLY DEVICE - A power supply device includes an electric storage unit connected to a main power supply and a load via a charging circuit; and a control circuit connected to the main power supply, the charging circuit, a voltage detection circuit, and a current detection circuit. When the electric storage unit is charged up to a steady-state voltage Vcs of the electric storage unit, the control circuit controls the electric storage unit to be charged until the voltage Vc of the electric storage unit reaches a voltage for determining the property deterioration of the electric storage unit. During the charge process, the control circuit calculates at least one of the internal resistances and the capacitance of the electric storage unit from the variation width ΔVcr of the voltage Vc, the current Ic of the electric storage unit, the variation width ΔVct per unit time of the voltage Vc, and the current-time product ∫(Ic)dt of the electric storage unit. One of these values is used to determine the property deterioration of the electric storage unit. | 02-02-2012 |
20120038213 | NON-CHARGING BATTERY BACKUP UNIT (BBU) - A battery backup unit (BBU) includes a housing, at least one battery compartment in the housing with an output terminal, a DC input, a DC output, a path from the DC input to the DC output, circuitry for selectively connecting the output terminal to the path, which circuitry includes a switch, and a controller configured to detect a condition of the path and selectively control the switch to connect the output terminal to the path when the condition is detected, the BBU being incapable of charging batteries in the at least one battery compartment. The path from the DC input to the DC output may include a DC/DC step up converter to help maintain a constant output voltage. | 02-16-2012 |
20120043816 | SUBMODULE FOR A MULTI-STAGE POWER CONVERTER HAVING ADDITIONAL ENERGY STORAGE DEVICE - A submodule for forming a multilevel power converter for electric energy distribution and transmission, includes a capacitor unit and a power semiconductor circuit having power semiconductors that can be switched off. The capacitor unit and the power semiconductor circuit are interconnected in such a way that, depending on the actuation of the power semiconductors of the power semiconductor circuit, at least the voltage released at the capacitor unit or a zero voltage can be generated at output terminals of the submodule. The submodule is not only able to compensate for reactive power, but to exchange active power with a connected alternating current network. An additional energy storage device is connected to the capacitor unit through a chopper unit for regulating current flow between the additional energy storage device and the capacitor unit. | 02-23-2012 |
20120091810 | AUTOMATIC SYSTEM FOR SYNCHRONOUS ENABLEMENT-DISABLEMENT OF SOLAR PHOTOVOLTAIC PANELS OF AN ENERGY PRODUCTION PLANT WITH DISTRIBUTED DC/DC CONVERSION - A solar energy plant may include a DC bus, photovoltaic panels coupled in parallel to the DC bus, each photovoltaic panel having a DC/DC converter, and a first controller controlling the DC/DC converter depending on whether a voltage on the DC bus is equal to or greater than a first threshold and lower than or equal to a second threshold. The solar energy plant may include a DC/AC inverter coupled to the DC bus and outputting an output AC voltage, an auxiliary start-up power supply charging a parasitic capacitance on the DC bus up to the first threshold, and a second controller turning on the auxiliary start-up power supply based upon a start command, and turning off the auxiliary start-up power supply and simultaneously turning on the DC/AC inverter. | 04-19-2012 |
20120104855 | UN-INTERRUPTIBLE POWER SUPPLY SYSTEM - The un-interruptible power supply system mainly contains an electricity detection device and a power supplying module. The electricity detection diction is connected to the in-house wiring and detects the state of electricity on the in-house wiring. If abnormality is detected, a wireless transmitter in the electricity detection device would radiate a wireless signal indicating such an abnormality. A wireless receiver in the power supplying module would receive the wireless signal and thereby activate auxiliary power provisioning. As such, the present invention is able to accurately maintain product operation as long as the power provisioning from the in-house wiring is normal, and to sustain the power provisioning precisely when there is a black out. | 05-03-2012 |
20120119580 | Method and Apparatus for Maintaining Uninterruptible Power Supplies - A system and method of isolating an uninterruptible power supply system is disclosed that comprises bypassing an inverter section of the power supply to couple primary power to a load bus; and, thereafter, isolating the power supply by simultaneously uncoupling the power supply from the load bus and coupling the primary power to the load bus. | 05-17-2012 |
20120126619 | HYBRID POWER SOURCE - A hybrid power system is comprised of a high energy density element such as a fuel-cell and high power density elements such as a supercapacitor banks. A DC/DC converter electrically connected to the fuel cell and converting the energy level of the energy supplied by the fuel cell. A first switch is electrically connected to the DC/DC converter. First and second supercapacitors are electrically connected to the first switch and a second switch. A controller is connected to the first switch and the second switch, monitoring charge levels of the supercapacitors and controls the switching in response to the charge levels. A load is electrically connected to the second switch. The first switch connects the DC/DC converter to the first supercapacitor when the second switch connects the second supercapacitor to the load. The first switch connects the DC/DC converter to the second supercapacitor when the second switch connects the first supercapacitor to the load. | 05-24-2012 |
20120126620 | METHOD OF SUPPLYING POWER VENT/DIRECT VENT WATER HEATER BACKUP POWER WHEN THE MAIN POWER IS OFF AND THE BACKUP POWER SUPPLY SYSTEM THEREOF - A backup power supply system of a water heater includes a power transforming device and a controller. The power transforming device generates a DC current with an initial voltage through sensing the temperature change under a low battery condition. The controller examines the initial voltage of the DC current and gives command to which device to supply power to the water heater or to amplify the initial voltage of the DC current for maintaining the water heater's normal work. | 05-24-2012 |
20120126621 | LIGHTING SYSTEM - A system includes an electrical load and a power storage system. The system includes a control assembly which controls the flow of a first power signal to the electrical load and power storage system. The control assembly controls the flow of a second power signal between the power storage system and electrical load. The system includes a housing which carries the power storage system and control assembly. | 05-24-2012 |
20120133207 | Distributed Solar Power Plant And A Method Of Its Connection To The Existing Power Grid - Methods and apparatus are provided for using a renewable source of energy such as solar, wind, or geothermal energy. In some embodiments, the method may include generating electric energy from a renewable form of energy at a plurality of locations at which reside an electric power line associated with an electric power grid. The electric energy generated at each location may be transferred to the electric power line to thereby supply electric energy to the electric power grid. | 05-31-2012 |
20120139344 | INRUSH CURRENT PROTECTION FOR WIND TURBINES AND WIND FARMS - A wind turbine is provided. The wind turbine includes a transformer having a low-voltage side and a high-voltage side. The transformer is configured to step up a voltage of the low-voltage side of the transformer to a voltage of an external grid. The wind turbine further includes an electrical power generating unit which is connected to the low-voltage side of the transformer and configured to feed an ac-power to the low-voltage side of the transformer. A charging device of the wind turbine is connected to the low-voltage side of the transformer and configured to charge the low-voltage side of the transformer when the generator does not feed ac-power to the low-voltage side of the transformer. | 06-07-2012 |
20120146417 | METHODS AND APPARATUS FOR PROVIDING AND DISTRIBUTING STANDBY POWER - Aspects of the invention are directed to power distribution systems and methods for distributing power from a primary power source and a backup power source to a load. In one particular aspect, a power distribution system includes a first input to receive input power from the primary power source, a second input to receive input power from the backup power source, an output that provides output power from at least one of the primary power source and the backup power source, a first switch operatively coupled to the first input and the output and operative to selectively couple the first input to the output, a second switch operatively coupled to the second input and the output and operative to selectively couple the second input to the output, and a controller operatively coupled to the first switch and to the second switch and configured to control the first switch and the second switch to provide an electrical interlock. | 06-14-2012 |
20120146418 | UTILITY GRID POWER AVERAGING AND CONDITIONING - A power system can include an input configured to be coupled to a utility grid. The power system can further include an electrical energy storage unit comprising a dielectric layer disposed between first and second electrode layers, the dielectric layer comprising a high permittivity ceramic material. In an embodiment, the power system can include a control computer can control a first switch to deactivate a main electrical energy storage unit that includes the electrical energy storage unit, and to control the second switch to activate a backup energy storage unit. In a further embodiment, the power system can include an output coupled to the utility power grid. In a further embodiment, the power system can include a control computer to control a first switch to deactivate a main electrical energy storage unit, and to control a second switch to activate an electrical energy storage unit buffer. | 06-14-2012 |
20120161521 | STANDBY WAKE-UP CIRCUIT FOR ELECTRONIC DEVICE - A standby wake-up circuit is configured for determining whether to wake an electronic device which is powered by a power-supplying module. The power-supply module is able to supply a standby power to the electronic device when the electronic device is in standby, and supply a main power to the electronic device when the electronic device is wakened. The standby wake-up circuit comprises an input-signal detecting circuit and a processing module. The input-signal detecting circuit comprises a power-key detecting module, an input-signal detecting module, a multiplexer and a power controller. The power-key detecting module and the input-signal detecting module are configured for detecting whether a signal is inputted. When inputting the signal, the power controller sends out a waken signal for supplying the main power to the electronic device. | 06-28-2012 |
20120161522 | POWER SUPPLY DEVICE - A power supply device is provided. The power supply device includes: an AC power output unit storing and outputting an AC power; a rectifier unit rectifying an output of the AC power output unit; a DC output unit outputting an output from the rectifier unit as a DC power; and a standby power reduction unit detecting a signal regarding whether the AC power is inputted or not and discharging a standby power stored in the AC power output unit in response to the detected signal. | 06-28-2012 |
20120169124 | OUTPUT CIRCUIT FOR POWER SUPPLY SYSTEM - A power supply system is provided with an output terminal unit including a common output terminal, which, when an amount of stored charge in lithium-ion secondary batteries capable of supplying discharge power as a first DC power to a DC load is greater than a predetermined first reference value, supplies to the DC load the first DC power from the lithium-ion secondary batteries and which, when the amount of stored charge is less than the first reference value, supplies to the DC load a second DC power obtained by converting AC power from a system power supply using an AC-DC converter circuit. | 07-05-2012 |
20120169125 | UNINTERRUPTIBLE POWER SUPPLIES WITH CONVERTER OPERATION CONDITIONED UPON STATIC SWITCH COMMUTATION AND METHODS OF OPERATION THEREOF - A UPS is operated by deasserting a static switch drive signal, e.g., a gate signal to a thyristor, and then delaying provision of power from a converter circuit of the UPS, e.g., an inverter or other source of AC power, until after the switch has current commutated to an off state. For example, expiration of a predetermined time interval following deassertion of the switch drive signal may be detected, and the converter circuit may be enabled to drive the output of the UPS responsive to the detected expiration of the predetermined time interval. Alternatively, a current in the static switch may be detected, and the converter circuit may be enabled to drive the output of the UPS responsive to the detected current. The invention may be embodied as methods and apparatus. | 07-05-2012 |
20120175957 | Arrangement for an uninterruptible power supply - An uninterruptible power supply with a rectifier, energy store for storing electrical energy, inverter, switching means and a controller is provided. The rectifier is connected to a rectifier input to a supply grid (AC | 07-12-2012 |
20120181869 | PARALLEL REDUNDANT POWER DISTRIBUTION - Systems and methods are provided for reliable redundant power distribution. Some embodiments include micro Automatic Transfer Switches (micro-ATSs), including various components and techniques for facilitating reliable auto-switching functionality in a small footprint (e.g., less than ten cubic inches, with at least one dimension being less than a standard NEMA rack height). Other embodiments include systems and techniques for integrating a number of micro-ATSs into a parallel auto-switching module for redundant power delivery to a number of devices. Implementations of the parallel auto-switching module are configured to be mounted in, on top of, or on the side of standard equipment racks. Still other embodiments provide power distribution topologies that exploit functionality of the micro-ATSs and/or the parallel micro-ATS modules. | 07-19-2012 |
20120181870 | APPARATUS FOR SELECTING SPECIFICATIONS OF POWER STORAGE SYSTEM AND METHOD FOR SELECTING SPECIFICATIONS OF POWER STORAGE SYSTEM - A power storage system includes a power control unit including an inverter, and a battery for storing electrical energy supplied with commercial AC power by way of the inverter to supply the electrical energy to an electrical load. An apparatus for selecting specifications of a power storage system includes a data input interface unit for input of data obtained by measuring power usage during prescribed hours at a location of power consumption where the power storage system is to be installed, and an operation processing unit for finding annual average power usage during prescribed hours based on the measured data, and determining an output of the inverter based on the average power usage. | 07-19-2012 |
20120193987 | ENERGY INTERFACE SYSTEM - Aspects of the present disclosure involve systems, methods, and the like, for an energy interface system for interfacing alternative energy sources with a utility power source on a premises. The energy interface system provides flexibility in the use and distribution of utility energy sources and alternative energy sources based on several measurements and criteria of the interface system. For example, the energy interface system may allow for the energy consumption to adapt to changing parameters, such as utility rate schedules, cost of alternative fuels and utility premiums for consumption or generation of energy at particular times. The energy interface system also allows for deferment of charging or other high-energy loads to be recognized by the system at otherwise low-energy times. In addition, the energy interface system allows for monitoring and communication with the system for ease of configuring the system based on one or more criteria or measurements. | 08-02-2012 |
20120205981 | UTILIZATION OF DISTRIBUTED GENERATOR INVERTERS AS STATCOM - The invention provides a method and system for operating a solar farm inverter as a Flexible AC Transmission System (FACTS) device—a STATCOM—for voltage control. The solar farm inverter can provide voltage regulation, damping enhancement, stability improvement and other benefits provided by FACTS devices. In one embodiment, the solar farm operating as a STATCOM at night is employed to increase the connectivity of neighbouring wind farms that produce peak power at night due to high winds, but are unable to connect due to voltage regulation issues. The present invention can also operate during the day because there remains inverter capacity after real power export by the solar farm. Additional auxiliary controllers are incorporated in the solar farm inverter to enhance damping and stability, and provide other benefits provided by FACTS devices. | 08-16-2012 |
20120217808 | SWITCHING SYSTEMS AND METHODS FOR USE IN UNINTERRUPTIBLE POWER SUPPLIES - The present invention may be embodied as an uninterruptible power supply comprising an input section, an output section, an inverter section, and a transformer. The transformer is operatively connected to the input section, the output section, and the inverter section. The uninterruptible power supply operates in a line mode and in a standby mode. In the standby mode, the output section generates an output power signal from a standby signal generated by the inverter section based on the alternative power source and at least one inverter control signal. When the uninterruptible power supply operates in the standby mode, the at least one inverter control signal is pulse-width modulated during at least a first portion of a cycle of the output power signal and not pulse-width modulated during at least a second portion of the cycle of the output power signal. | 08-30-2012 |
20120217809 | UNINTERRUPTIBLE POWER SUPPLY APPARATUS - In this uninterruptible power supply apparatus, even after electric power supply to a load stops due to prolonged power failure time, the operation of an inverter is continued, a DC power supply voltage is generated based on an output of the inverter, and a control circuit is driven by the DC power supply voltage. Therefore, when electric power supply from a commercial AC power supply is resumed during the stop of electric power supply to the load, electric power supply to the load is automatically resumed by the control circuit. | 08-30-2012 |
20120235486 | PHOTOVOLTAIC INVERTER AND METHOD FOR CONTROLLING PHOTOVOLTAIC INVERTER - A photovoltaic inverter is provided, having a controller, an auxiliary power and a buffering element. The auxiliary power provides power to the controller. The buffering element is coupled between a photovoltaic panel and the auxiliary power such that the buffering element stores energy output from the photovoltaic panel first during a startup period, and then stops storing energy output from the photovoltaic panel and provides the stored energy to the auxiliary power, thereby performing a maximum power point tracking procedure on the photovoltaic panel during a first period following the startup period, and feeds energy output from the photovoltaic panel to the auxiliary power during a second period following the first period thereby continuously performing the maximum power point tracking procedure on the photovoltaic panel by the controller. | 09-20-2012 |
20120235487 | Grid backfeed prevention system - The invention provides a system and method for controlling power draw from an auxiliary power system to prevent deleterious backfeed to an external power grid. In an illustrative embodiment power levels from a photovoltaic auxiliary array are read by current transformers, which trigger a programmable logic unit to toggle a switch open or closed at threshold levels of difference between the grid's current and the photovoltaic current. | 09-20-2012 |
20120235488 | POWER CONVERTER - A power converter includes a backup power source Eb provided separately from a power source Es and designed to supply power during a discharge period, and a discharging driver Mb that turns on/off an upper-arm (one) switching element in series-connected switching elements Qu and Qd based on a drive signal that has at least one of a voltage and a frequency, and drives a lower-arm (the other) switching element Qd such that it is always on, the at least one of the voltage and the frequency of the drive signal being within a predetermined range lower than a drive signal outputted from a normal driver Mu, Md. | 09-20-2012 |
20120242150 | POWER SUPPLY SYSTEM, CONTROL DEVICE OF POWER SUPPLY SYSTEM, OPERATION METHOD OF POWER SUPPLY SYSTEM, AND CONTROL METHOD OF POWER SUPPLY SYSTEM - A power supply system according to the present invention includes a control device ( | 09-27-2012 |
20120248874 | METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF AN AUXILIARY POWER SYSTEM OF A THERMAL POWER PLANT - Apparatus and method for controlling power in an auxiliary power system of a thermal power plant having a generator and one or more auxiliary buses. The apparatus includes adjustable speed drives and capacitance sources for connection to the one or more auxiliary buses and sensors for measuring voltage and reactive power on the one or more auxiliary buses. A controller is operable to control the adjustable speed drives and the capacitance sources to control the power factor of the auxiliary power system, while providing steady state voltage regulation and dynamic voltage support. | 10-04-2012 |
20120256491 | SWITCHING MODE POWER SUPPLY - There is provided a switching mode power supply including: a direct current (DC)/DC converting unit converting a DC power level; an auxiliary power supply unit discharged in a no load mode in which a load is not connected to an output terminal of the DC/DC converting unit; and a controlling unit sensing a change in impedance according to whether or not the load is connected to the output terminal to thereby determine whether or not the switching mode power supply is in the no load mode, and driving a pulse width modulation integrated chip (PWM IC) when a voltage level of the auxiliary power supply unit is at a preset level or less in the no load mode. | 10-11-2012 |
20120261992 | Renewable Energy Power Controller - A system to provide power to a load from a renewable power source and an energy storage device, comprises input and isolation circuits for receiving power from renewable energy sources and to isolate each renewable energy source from one other, a battery charger circuit to charge a battery by receiving power from the renewable energy sources, a DC-to-AC power inverter having an input connected to the battery and an AC output to match an AC backup power source, and a switching circuit which connects the AC inverter input to a load, and switches to connect the AC backup power to the load when the battery voltage drops below a certain level. | 10-18-2012 |
20120267957 | Transfer Switch For Automatically Switching Between Alternative Energy Source And Utility Grid - An automatic transfer switch configured for connection to a non-traditional, full-time or intermittent power source, such as a wind turbine or solar panel, selectively connects the non-traditional power source as a primary power source and a utility-derived power source as a secondary power source. The intermittent power source includes an energy storage device, such as a bank of DC batteries, to supplement power delivery during periods of low energy production. The power is provided to an AC load via a DC-to-AC inverter. The transfer switch includes an input to monitor the voltage level on the energy storage device and will switch from the primary power source to the utility power source when the voltage level on the energy storage device drops below a preset level. Thus, a loading condition that exceeds the rating of the inverter will not fault the inverter or limit the power available to the loads. | 10-25-2012 |
20120274138 | Photovoltaic Array Systems, Methods, and Devices with Bidirectional Converter - Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array, under some circumstances, by using a bidirectional power converter not only to convert the DC output of the array to output power under some conditions, but also, for diagnostic operations, applying a back-converted DC voltage to the array. | 11-01-2012 |
20120293000 | System and method for supplementing a generated DC power supply - Renewable energy farmed from solar, wind or the like enters a DC to DC converter with pulse width modulation (PWM) control to produce a generated DC with a known voltage. A micro controller controls the PWM control of the generated DC between zero and 100 percent such that it is suitable for a particular DC load. If the PWM is at 100%, then the MCU switches on power from an AC to DC converter with ON/OFF control for producing a line DC. The line DC is combined with the generated DC to supplement the generated DC so the load performs reliably. Alternatively, several capacitors in parallel are used to allow the generated DC to charge at least two of the capacitors, while a third capacitor that is charged from grid AC is always ready to be used as a backup source of power. | 11-22-2012 |
20120306274 | UPS ADAPTIVE OUTPUT VOLTAGE CONTROL SYSTEMS - An uninterruptible power supply includes a rectifier coupled to an input of an uninterruptible power supply and converts a first alternating current having a first alternating current voltage to a direct current. An inverter is coupled to an output of the uninterruptible power supply and converts the direct current to a second alternating current having a second alternating current voltage. A bypass switch bypasses the rectifier and the inverter and provides a bypass power from the input to the output when in a bypass state. A control module switches the bypass switch to the bypass state when in a bypass mode and switches the bypass switch to a non-bypass state when in a UPS mode. The control module adjusts the second alternating current voltage between first and second voltage levels when in an adaptive voltage control mode after switching from the bypass mode to the UPS mode. | 12-06-2012 |
20120319485 | TRANSFER SWITCH WITH ARC SUPPRESSION - An automatic transfer switch for a power system receiving multiple alternating current sources and delivering multiple alternating current output is described. A transfer switch control circuit can sense a power loss in one or both AC sources. Each power supply can deliver current to drive a load but, if one of the power supplies fails, the other can supply power to drive both loads. | 12-20-2012 |
20130002024 | SYSTEMS AND METHODS FOR OPERATING AN UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply includes a first input to receive input power from an input power source, an output to provide output power, a switch, a first logic power supply coupled to the switch, a back-up power source, a charger, a main logic power supply and power converter circuitry. The switch is configured to close when a characteristic of the input power is within a selected range. The first logic power supply is coupled to the switch and configured to receive input power from the input power source when the switch is closed. The first logic power supply has a first DC output. The back-up power source has a second DC output and is coupled to the first DC output at a common node. The charger has a third DC output and is coupled to the common node. The main logic power supply is coupled to the common node and is configured to receive at least one of the first DC output, the second DC output and the third DC output. The power converter circuitry is coupled to the backup power source and the first input and is configured to provides the output power derived from at least one of power at the first input and power from the backup power source. | 01-03-2013 |
20130002025 | UPS SYSTEM AND METHOD OF SUPPLYING POWER TO NON-LINEAR LOAD - An UPS system and a method of supplying power to a non-linear load are provided. The UPS system may include a bypass module configured to supply a fundamental wave current to a non-linear load of the UPS system; and a power module configured to supply a harmonic current to the non-linear load when the bypass module operates normally. | 01-03-2013 |
20130009480 | POWER SOURCE AND POWER SOURCE CONTROL CIRCUIT - Power sources, backup power circuits, power source control circuits, data storage devices, and methods relating to controlling application of power to a node are disclosed. An example power source includes an input, backup power source, and a backup power source control circuit. The input is configured to be coupled to a primary power source and further configured to couple the primary power source to the output when the input is coupled to the primary power source. The backup power source control circuit is configured to control a current path from the backup power source to the output based at least in part on a voltage applied to the input. | 01-10-2013 |
20130015711 | SYSTEM AND METHOD FOR USING CAPACITORS IN REMOTE OPERATIONS - A battery-free device is provided with one or more series or parallel capacitive networks. One or more solar panels are used to charge the capacitive networks and one or more charging circuits are used to control the charging of the capacitive networks. One or more DC-DC converters maybe used to provide a voltage to the device, a remote monitoring or controlling function, and, optionally, a user interface. In those instances when it is desired that the monitoring or controlling function remain powered at all times, the control circuitry is preferentially preserved at the expense of the other features of the device such that if, for any reason, the capacitive network is drained after running the other features, there will still be sufficient power stored in capacitive network to maintain the monitoring or controlling function. | 01-17-2013 |
20130015712 | SWITCH UNIT, AND RELATED METHOD - A switch unit includes a current switching device drivable by an electromagnetic actuator for opening/closing an electric circuit associated with the switch unit, a first energy storage for storing electric energy for the electromagnetic actuator, and electronic controller means which are supplied by an external power line and control a supply of the electric energy from the energy storage means to the electromagnetic actuator. The switch unit includes emergency procedure operating means associated with the electronic controller means and provided with a second energy storage means. The emergency procedure operating means are configured for enabling driving of the current switching device and opening the associated electric circuit in an emergency condition in which a lack or drop or irregular supply of the external power line is experienced. | 01-17-2013 |
20130020872 | POWER SUPPLY WITH DUAL ASYMMETRICAL INPUTS - A dual asymmetric input power supply architecture for use in power systems employing input power source redundancy. The dual asymmetric input power supply operates from a main input of the power supply when acceptable voltage is present on the main input. If the main input fails or is out of tolerance, power can be supplied from an auxiliary input through a transformer isolated switching converter. The dual asymmetric input power supply architecture maintains the high efficiency of a single-input power supply while providing an auxiliary connection for input power source redundancy. | 01-24-2013 |
20130026834 | POWER CONVERSION DEVICE - An uninterruptible power supply device including a filter for rejecting, in the voltage of a power supply node between a converter and an inverter, a ripple voltage of a frequency twice a frequency of an output voltage of the inverter to generate a DC voltage. This filter includes an extraction unit for extracting the ripple voltage from the voltage of the power supply node, and a subtraction unit for subtracting the ripple voltage extracted by the extraction unit from the voltage of the power supply node to generate the DC voltage. | 01-31-2013 |
20130033109 | UPS MECHANICAL TRANSFER RELAY ARC MITIGATION - Systems and methods of providing power with an uninterruptible power supply are provided. The uninterruptible power supply includes a first input to receive an input AC voltage from a power source, the input AC voltage having an associated phase angle, and a second input to receive an input voltage from a backup power source. The uninterruptible power supply also includes an output. The output provides output power derived from power from at least one of the power source and the backup power source. The uninterruptible power supply also includes an inverter coupled to the backup power source, a relay and a controller. The relay is configured to couple the first input with the output in a first position, and to couple the inverter with the output in a second position. The controller is configured to detect a voltage swell condition of the input voltage, and responsive to detection of the voltage swell condition, control the relay to switch from the first position to the second position during a predefined range of phase angles of the input AC voltage. | 02-07-2013 |
20130033110 | POWER SUPPLY CIRCUIT WITH LOW-VOLTAGE CONTROL AND PRODUCING METHOD THEREOF - A power supply circuit with low-voltage control and a producing method thereof. The circuit includes an auxiliary power supply, a high-voltage startup unit, a switching circuit, and a control circuit. When the circuit is powered on, a storage capacitor in the switching circuit is charged by the high-voltage startup unit and supplies the control circuit with a low-voltage power source so that the control circuit is started up completely. After the circuit enters a normal operation state, the control circuit detects the voltage across the storage capacitor and dynamically controls the switching circuit to charge the storage capacitor so that a steady low-voltage power source supplied for the control circuit is obtained. Without reducing the efficiency of the power supply, the circuit is simplified and the cost is lowered. | 02-07-2013 |
20130038127 | SYSTEM AND METHOD FOR OPTIMIZING ENERGY STORAGE DEVICE CYCLE LIFE - A multi-energy storage device system is provided that includes a first energy storage device (ESD) coupled to a direct current (DC) link. A bi-directional buck/boost converter includes an output channel coupled to the DC link and an input channel. A second ESD coupled to the input channel has a usable energy storage range defining an entire amount of usable energy storable therein. A database includes stored information related to a known acceleration event. A system controller is configured to acquire the stored information related to the known acceleration event and, during the known acceleration event, cause the buck/boost converter to boost the voltage of the second ESD and to supply the boosted voltage to the DC link such that after the known acceleration event, the state of charge of the second ESD is less than or substantially equal to a minimum usable energy storage state of charge. | 02-14-2013 |
20130038128 | ELECTRONIC CIRCUIT AND MOBILE TERMINAL DEVICE USING THE SAME - An electronic circuit includes a first digital circuit, a second digital circuit, a first detection part to detect a first voltage value which is an operation voltage of the first digital circuit, a second detection part to detect a second voltage value which is an operation voltage of the second digital circuit, a comparison part to compare the first voltage value and the second voltage value, and a connection/disconnection part to perform connection and disconnection between the first digital circuit and the second digital circuit depending on a comparison result acquired by the comparison part. | 02-14-2013 |
20130049470 | POWER ANALYSIS MODULE FOR MONITORING AN ELECTRICAL POWER SOURCE - A method of analyzing the characteristics of a power source includes receiving a power source having at least one phase and sensing voltage signals of each phase of the at least one phase. The method includes detecting a zero crossing event of a selected phase of the at least one phase based on the sensed voltage signals of the selected phase. The method also includes determining, using a processor, voltage information for each phase of the at least one phase based on the corresponding sensed voltage signals. The method further includes outputting a series of pulses via a galvanic isolator in response to the zero crossing event. Respective lengths of some or all of the pulses in the series are based on the corresponding voltage information for each of the at least one phase. | 02-28-2013 |
20130057072 | UNINTERRUPTED POWER SUPPLY APPARATUS AND POWER-SUPPLYING METHOD FOR THE SAME - An uninterrupted power supply apparatus is applied to an alternating current power apparatus and a load. The uninterrupted power supply apparatus includes a power distribution unit, a power supply unit, and an uninterrupted power supply unit. The power distribution unit includes a plurality of slots. The power distribution unit is electrically connected to the alternating current power apparatus and the load. The power supply unit is electrically connected to the power distribution unit and inserted into the corresponding slot. The uninterrupted power supply unit is electrically connected to the power distribution unit and inserted into the corresponding slot. The present invention is provided to improve the performance of the uninterrupted power supply and reduce occupied space of a cabinet to save space. | 03-07-2013 |
20130062949 | SMOOTH SWITCHING DEVICE AND METHOD FOR DOUBLE POWER SUPPLIES - A smooth switching device and method for double power supplies. The devices includes a main/backup power supply switching unit ( | 03-14-2013 |
20130062950 | DEVICE FOR SUPPLYING AUXILIARY POWER TO AN ITEM OF EQUIPMENT ON A CURRENT-LIMITED POWER SUPPLY BUS - The power supply circuit for powering equipment via a current-limited power supply bus at a nominal voltage (Vb) of the equipment includes an auxiliary power supply circuit comprising an energy storage member and a trigger member for triggering auxiliary power supply to the equipment from the storage member via a voltage-reducing converter for reducing the auxiliary voltage to the nominal voltage. | 03-14-2013 |
20130069432 | PARALLEL CONTROL AND PROTECTION FOR UPS - According to one aspect, embodiments of the invention provide a method of operating a 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 of operation, designating one of the first UPS and the second UPS as a master UPS, and controlling the bypass switch of the first UPS and the bypass switch of the second UPS using the master UPS. | 03-21-2013 |
20130076139 | DISCHARGE APPARATUS FOR AUXILIARY POWER - A discharge apparatus for auxiliary power is applied to an alternating current power apparatus and a switching power supply. The switching power supply includes an auxiliary power unit. The auxiliary power unit will not discharge to the discharge apparatus for auxiliary power when the alternating current power apparatus supplies power to the discharge apparatus for auxiliary power and the auxiliary power unit. The auxiliary power unit will discharge to the discharge apparatus for auxiliary power when the alternating current power apparatus stops supplying power to the discharge apparatus for auxiliary power and the auxiliary power unit. | 03-28-2013 |
20130076140 | SYSTEMS AND METHODS FOR MICROGRID POWER GENERATION AND MANAGEMENT - Systems and methods for coordinating selective activation of a multiplicity of emergency power generation equipment over a predetermined geographic area for distribution and/or storage to supply a microgrid of electrical power for a substantially similar geographic area. | 03-28-2013 |
20130082530 | RENEWABLE ENERGY GENERATION SYSTEM - A renewable energy generation system is provided, including at least one renewable energy generator, at least one micro-inverter and an uninterruptible power supply. The renewable energy generator generates a DC power source. The micro-inverter is coupled to the renewable energy generator to convert the DC power source to an AC power source according to a utility power. The uninterruptible power supply is coupled to the micro-inverter, in which the uninterruptible power supply provides a reference voltage to the micro-inverter when the utility power is cut off, such that the micro-inverter continually provides the AC power source to at least one loading according to the reference voltage generated by the uninterruptible power supply. | 04-04-2013 |
20130093244 | APPLIANCE HAVING AN AUXILIARY POWER INPUT - An appliance including an electrically-powered system, a primary power input, and an auxiliary power input is provided. The electrically-powered system is disposed within a housing. The primary power input is configured to supply electrical energy to the electrically-powered system. However, the housing generally hampers access to the primary power input after installation of the appliance. Therefore, the auxiliary power input, which is also configured to supply electrical energy to the electrically-powered system, is readily accessible relative to the primary power input after installation of the appliance. | 04-18-2013 |
20130099573 | POWER SUPPLY DEVICE AND CONTROL METHOD FOR POWER SUPPLY - A power supply device includes: a main power supply configured to feed power to a load with constant-voltage output using an external power supply; an auxiliary power supply configured to feed power to the load using an internal power storage unit; a constant-current/constant-voltage switching power supply configured to feed a part of current flowing through the load by which part the current exceeds an upper limit value of output current of the main power supply instructed by a current upper-limit instruction unit, with the constant-current output from the auxiliary power supply; and an output switching unit switching the constant-current/constant-voltage switching power supply from the constant-current output to the constant-voltage output when a power cut monitoring unit determines stop of power supply from the external power supply. | 04-25-2013 |
20130106190 | POWER SUPPLY SYSTEM WITH AUTOMATIC TRANSFER FUNCTION AND METHOD OF CONTROLLING THE SAME | 05-02-2013 |
20130113288 | Backup Power Control System - A backup power control system includes a main power supply unit, a first negative feedback circuit unit, a standby power supply unit, a second negative feedback circuit unit, and a control unit. The main power supply unit is suitable for outputting a main power. The standby power supply unit is suitable for outputting a standby power. The control unit switches the first negative feedback circuit unit and the second negative feedback circuit unit to be turned on or not to be turned on in response to whether a normal power supply signal of the main power is received. When the normal power supply signal is received, the control unit enables the first negative feedback circuit unit to be turned on and enables the second negative feedback circuit unit not to be turned on. | 05-09-2013 |
20130113289 | TRANSPORT REFRIGERATION UNIT WITH AUXILIARY POWER CIRCUIT AND INTERLOCK - A pre-wired auxiliary power circuit ( | 05-09-2013 |
20130119766 | METHOD FOR CONTROLLING UNINTERRUPTIBLE AND PARALLEL POWER MODULES - A method for controlling uninterruptible and parallel power modules has steps of parallelly and unloadably connecting multiple power modules to a load, acquiring a number and a load wattage of the power modules connected to the load and an instant load ratio, calculating a simulated load ratio in accordance with a simulated number of the power modules and the load wattage, if the simulated load ratio is closer to a half load and the redundancy requirement is met, unloading at least one of the power modules connected to the load so that other power modules connected to the load can share the additional load released from the unloaded power modules and the load ratio and output efficiency of each power module connected to the load can be enhanced. | 05-16-2013 |
20130140897 | Arrangement for an uninterruptible power supply - An arrangement for uninterruptible power supply with a rectifier, an energy store, an inverter with an input, a switch and a controller. The rectifier is connected to a rectifier input to a supply grid (AC | 06-06-2013 |
20130140898 | Arrangement for an uninterruptible power supply - The invention relates to an arrangement for an uninterruptible power supply with a rectifier, an energy store, an inverter, a switching means and a controller. The rectifier is connected to a rectifier input to a supply grid (AC | 06-06-2013 |
20130147276 | SYSTEMS AND METHODS FOR MANAGING A FUEL CELL - A method of operating a power adapter that includes an energy storage device and a fuel cell system including a fuel supply and a fuel cell stack, the method including determining a connectivity state of an auxiliary power source and a load with the power adapter, and selecting a power adapter operation mode based on the connection states of the auxiliary power source and the load. The operation modes of the power adapter include at least an auxiliary mode when the auxiliary power source and the load are connected to the power adapter, and a fuel cell mode when the auxiliary power source is disconnected from the power adapter and the load is connected to the power adapter. The auxiliary mode includes providing power from the auxiliary power source to the load, and the fuel cell mode includes providing fuel cell power to the load. | 06-13-2013 |
20130154375 | Solar Home Electrification With Grid Connection - A means of providing solar powered electricity for day and nighttime use supported in part by power from the grid to allow a small generator to electrify the home or business with a small generator operating with much larger capacity. Excess solar energy is provided to the power company as needed. | 06-20-2013 |
20130162044 | Low Power Implementation to Allow for High Potential Rails to Come Up in Any Order - A low power biasing circuit for powering up split-rail electronic circuits includes an intermediate voltage generator at each pad which is supplied by a temporary supply voltage to generate a temporary intermediate voltage only when a power signal indicates that all external voltage rails are not safe, thereby reducing power consumption. | 06-27-2013 |
20130175866 | SOLAR ENERGY STATION AND APPLICATION - A system for supplying energy is provided. The system comprises a shelter for users of an outdoor recreational area. The shelter has a roof portion and photovoltaic cells disposed on the roof portion, the photovoltaic cells being arranged to convert solar energy into electrical energy. The system also comprises an energy distribution system arranged to receive converted electrical energy from the photovoltaic cells, and to receive grid electrical energy from a power distribution network. The energy distribution system is arranged to provide converted electrical energy to an electrically powered component of the system at times when there is sufficient converted electrical energy to power the component, and to provide grid electrical energy to the component at times when there is insufficient converted electrical energy to power the component. | 07-11-2013 |
20130187467 | INTELLIGENT ARBITRATION OF POWER LINE BASED COORDINATING SIGNALS BETWEEN MULTIPLE UPS BUSES WIHTOUT ANY AUXILIARY SIGNALS - A multiple UPS system has a plurality of UPS subsystems with a separate UPS data communications bus coupling a controller of each UPS subsystem to an associated controller of an associated tie cabinet. The multiple UPS system further includes a data communications tie bus that couples the controllers of the tie cabinets to each other. The controllers of the tie cabinets arbitrate power line based coordinating signals between the UPS buses without the use of auxiliary signals. | 07-25-2013 |
20130193759 | SYSTEMS, METHODS, AND DEVICES FOR CONTROL OF MULTIMODE UPS - Systems and methods are provided to control a multimode uninterruptible power supply (UPS) using external information relevant to the stability of the power source. In one example, a UPS system may include at least one inverter feed path and at least one bypass feed path. A controller may command the inverter feed path and the bypass feed path based at least in part on information relevant to the stability of the power source that supplies the first inverter feed path or the first bypass feed path, or both. This information relevant to the stability of the power source may derive from at least one information provider external to the UPS system. | 08-01-2013 |
20130193760 | CONTROL SYSTEM FOR UNINTERRUPTIBLE POWER SUPPLIES - Systems and methods for controlling uninterruptible power supplies (UPSs) are provided. In one example, a system may include an inverter feed path to supply a first amount of power to a load and a bypass feed path to supply a second amount of power to the load. A controller may generate command the inverter feed path and the bypass feed path to vary the first amount of power and the second amount of power based at least in part on an occurrence of a power supply disturbance and a type or severity, or both, of the power supply disturbance. | 08-01-2013 |
20130193761 | SYSTEMS, METHODS, AND DEVICES FOR CONTROL OF PARALLEL UNINTERRUPTIBLE POWER SUPPLIES - Systems, methods, and devices for controlling parallel uninterruptible power supplies (UPSs) are provided. One example of a parallel UPS system may include several UPS modules to supply power to a load and at least one controller. At least some of the UPS modules may include a bypass feed path that can be switched on or off via a static switch module (SSM). The controller may adaptively control which of the bypass feed paths are switched on and off based on the load and respective capacity ratings of the UPS modules. The controller may also determine when an SSM of one of the bypass feed paths is likely to have failed. | 08-01-2013 |
20130193762 | THREE-LEVEL POWER CONVERTING APPARATUS - In a three-level power converting apparatus, a U-phase control means of a first control means operates with a control power supply. A control power supply voltage decrease detecting means and a second control means operate with a gate-driving power supply. A U-phase control means conducts PWM operation using a modulation signal λ from a modulation signal generating means and a carrier signal from a carrier signal generating means and generates control signals for a plurality of switching elements. The second control means generates gate signals from the control signals. When the control power supply voltage decrease detecting means delivers a control power supply voltage decrease signal, the second control means generates the gate signals to turn ones of the switching elements OFF and turn others of the switching elements ON for a predetermined period of time. | 08-01-2013 |
20130229060 | MULTI POWER SUPPLY SYSTEM - A multi power supply system includes a power supply, a power source, a control unit, a first conversion unit, and first and second switch elements. The control unit provides a timing signal indicative of a duty cycle to the first conversion unit. The first conversion unit provides an output voltage according to the duty cycle and an output voltage of the power source, so the multi power supply determines whether the first switch unit or the second switch unit is turned on according to the output voltage of the first conversion unit. Thus, the power supply and the power source can alternately supply power for the multi power supply system. | 09-05-2013 |
20130234519 | POWER ASSIST USING AMBIENT HEAT - An energy boost circuit adapted to provide power to a load is described. The circuit includes a pair of thermoelectric generators (TEGs) for converting thermal energy from a heat source into electrical energy; a pair of capacitor banks arranged in parallel, each coupled to one of the TEGs for storing the electrical energy generated by the TEG; a power converter; a first switching element coupled between a first capacitor bank in the pair of capacitor banks and the power converter; a second switching element coupled between a second capacitor bank in the pair of capacitor banks and the power converter; and a monitor/controller coupled to the first and second switching elements and adapted to selectively switch the switching elements in order to provide a power boost to the load, where the monitor/controller automatically switches the switching elements based at least partly on charge levels measured at the capacitor banks. | 09-12-2013 |
20130257157 | APPARATUS AND METHOD FOR SOALR COMPATIBLE GREEN POWER SUPPLY - An apparatus and method for green power supply unit (gPSU) that uses solar PV power as primary input source and grid utility power as backup source, provides seamless power to load is disclosed. In one embodiment, the invention can be retrofitted or mounted easily for a system such as non-mobile computer, and ultimately utilize clean energy, and aim to reduce the consumption of traditional grid power which usually involves environmental concerns. | 10-03-2013 |
20130257158 | Method for transmission and storage of wind energy - A method of transportation and storage of wind energy, comprising receiving wind energy from a wind turbine in the form of compressed gas, storing of at least a portion of the compressed gas in a pipe, venting a portion of the compressed gas to drive a motor to drive a generator to generate electrical power, and distributing the electrical power to one or more users. | 10-03-2013 |
20130293013 | DAISY CHAIN CONFIGURATION FOR POWER CONVERTERS - A system includes a plurality of power supplies and a controller. The plurality of power supplies outputs power to a load. A serial bus connects the plurality of power supplies in a daisy chain. The controller is connected to first and last ones of the power supplies by the serial bus. The controller is connected to a management bus via a management bus interface. The controller monitors the plurality of power supplies via the serial bus. The controller transmits status information of the plurality of power supplies to the management bus via the management bus interface of the controller. | 11-07-2013 |
20130293014 | Power Conversion System - The present disclosure relates to a power conversion system comprising a transformer comprising first, second, and third inductive coupling elements, a first power supply arranged to provide a voltage across the first coupling element, a second power supply arranged to provide a voltage across the second coupling element, an output arranged to receive a voltage from the third coupling element. In use, the voltage across the first coupling element and the voltage across the second coupling element are arranged to induce a voltage in the third coupling element. The system also comprises a control arrangement arranged to independently control the operation of the first and second power supplies. | 11-07-2013 |
20130293015 | POWER SUPPLY SYSTEM COMPRISING A FUEL CELL - A power supply system driving a load including a main power apparatus and a backup power apparatus is disclosed. The main power apparatus provides main power to the load according to city power. The backup power apparatus provides backup power to the load when the city power does not correspond to a first pre-determined condition and includes a recombination unit, a fuel cell unit, a transformation unit, and a control unit. The recombination unit recombines a methanol component to a hydrogen component. The fuel cell unit receives the hydrogen component to generate a first power. The transformation unit detects the city power and transforms the first power to generate the backup power. When the city power does not correspond to a first pre-determined condition, the control unit activates the reformer, the fuel cell unit, and the transformation unit to generate the backup power. | 11-07-2013 |
20130293016 | CONTROL METHOD FOR FUEL CELL POWER - A power controlling method for a power supplying system coupled to a load is disclosed. City energy is detected. It is determined whether the city energy corresponds to a first pre-determined condition. When the city energy corresponds to the first pre-determined condition, the city energy is transformed to generate a main power to the load. When the city energy does not correspond to the first pre-determined condition, a fuel cell unit is activated to provide a backup power to the load. | 11-07-2013 |
20130307338 | Pulse Generator Circuit Arrangement And Method For Generating Pulsed Signals For Insulation Fault Location In IT Networks - A pulse generator circuit arrangement for the search for insulation faults in IT networks includes a rectifier circuit for transforming an IT network voltage into a DC intermediate circuit and switching elements having a trigger signal input for switching on and off a DC intermediate circuit voltage. A circuit device downstream of the switching elements generates a pulsed current to be supplied to the IT network. The circuit arrangement includes a control and evaluating logic for determining the insulation resistance of the IT network and also a circuit device for generating the pulsed current, which is formed as a current regulating device and allows a dynamic adjustment of the pulsed current depending on the determined insulation resistance. | 11-21-2013 |
20130328401 | CONTROL APPARATUS, DEVICE AND METHOD FOR POWER MANAGEMENT FOR SAME - A device and a method for power management of a control apparatus, which control apparatus comprises: a main power source ( | 12-12-2013 |
20130334885 | POWER SOURCE AND POWER SOURCE CONTROL CIRCUIT - Power sources, backup power circuits, power source control circuits, data storage devices, and methods relating to controlling application of power to a node are disclosed. An example power source includes an input, backup power source, and a backup power source control circuit. The input is configured to be coupled to a primary power source and further configured to couple the primary power source to the output when the input is coupled to the primary power source. The backup power source control circuit is configured to control a current path from the backup power source to the output based at least in part on a voltage applied to the input. | 12-19-2013 |
20140001860 | FAST BUS TRANSFER METHOD AND DEVICE | 01-02-2014 |
20140008984 | POWER SUPPLY SWITCHING CIRCUIT, REAL TIME CLOCK DEVICE, ELECTRONIC APPARATUS, MOBILE UNIT, AND METHOD OF CONTROLLING POWER SUPPLY SWITCHING CIRCUIT - A power supply switching circuit includes a switching circuit that electrically connects a VCC terminal and a VBK terminal in a connected state, a switch control circuit, and a power supply monitoring circuit that monitors a voltage of the VCC terminal, and outputs a voltage of the VBK terminal. The switch control circuit switches a mode from a normal mode in which the switching circuit is intermittently connected to a standby mode in which the switching circuit is opened according to an output signal of the power supply monitoring circuit. | 01-09-2014 |
20140021788 | UNINTERRUPTED POWER SUPPLY AND DETECTION DEVICE - An uninterrupted power supply and detection device wherein a light fixture operates with and is coupled to a driving and linking module and a power supply wire. The driving and linking module connected to the power supply wire can sense a voltage state on the power supply wire. At this time, operation of the light fixture can be controlled by a wired or wireless switch of a control unit. When the voltage state is abnormal, the electricity detecting unit set in the driving and linking module can detect a signal representing abnormal power supply. Thereby, backup power can be supplied for driving emergency illumination of a light emitting element of the light fixture. Accordingly, original operation performed in a general power supply system can be kept and backup power can be supplied to keep illumination of the light fixture when the normal power supply is interrupted. | 01-23-2014 |
20140021789 | APPARATUS AND METHODS FOR BACKFEED DETECTION IN AND CONTROL OF UNINTERRUPTIBLE POWER SYSTEMS - An apparatus and method for backfeed detection in, and control of, an uninterruptible power system is disclosed. An adaptive controller in an uninterruptible power system enables delivery of power from a second, backup, power source, to loads connected to an output of the system, when a first, primary, input source is detected to be in a fault condition. Subsequent to enabling the second power source, and within a time interval that is less than one AC period following the detection of the input fault, the controller may sense and measure a backfeed of energy from the second source to the first source and may adapt a subsequent fault response based upon the measurement of the backfeed. Adapting the subsequent response may comprise adapting a response to a fault at the output. The subsequent response may comprise disabling or enabling delivery of energy from the second source. | 01-23-2014 |
20140028099 | UNINTERRUPTIBLE POWER SUPPLY APPARATUS FOR RECEIVING POWER FROM DIFFERENT ELECTRICAL UTILITY CONFIGURATIONS - An uninterruptible power supply (UPS) apparatus is disclosed that can receive power from different electrical utility configurations. The input stage of the UPS includes a three phase rectifier bridge design having three legs configured for connection to the different electrical utility configurations. An advantage that may be realized in the practice of some disclosed embodiments of the UPS input stage is that a single UPS can have the flexibility to be used with different electrical utility configurations having different voltages and phases. | 01-30-2014 |
20140028100 | REDUCING POWER LOSSES IN A REDUNDANT POWER SUPPLY SYSTEM - A power supply system includes at least a first power supply module and at least one redundant power supply module. The at least one power supply module supplies power to an output terminal. The at least one redundant power supply module operates in a first state and in a second state. In the first state the second power supply module supplies power to the output terminal. In the second state the second power supply module provides standby power and operates in a burst mode (for example, such as a discontinuous conduction mode). | 01-30-2014 |
20140035375 | REDUCING POWER LOSSES IN A REDUNDANT POWER SUPPLY SYSTEM - A power supply system includes at least a first power supply module and at least one redundant power supply module. The at least one power supply module supplies power to an output terminal. The at least one redundant power supply module operates in a first state and in a second state. In the first state the second power supply module supplies power to the output terminal. In the second state the second power supply module provides standby power and operates in a burst mode (for example, such as a discontinuous conduction mode). | 02-06-2014 |
20140062200 | CAPACITIVE POWER SYSTEM HAVING A SERVICE LIFE EXTENDING APPROACH - A capacitive power system having a service life extending approach. The system may have an ultra or super capacitor with high capacitance. A predetermined amount of energy may be stored in the capacitor, sufficient for providing power to an electrically powered mechanism in the event the mechanism loses its power, to place it in a fail safe condition. With the capacitor at an initial capacitance, the working voltage may be set as low as possible while still retaining sufficient capacity for storing the predetermined amount of energy. As the capacitor's capacitance decreases with age, the working voltage of the capacitor may be gradually increased to compensate for lost capacitance. If the mechanism loses power, then a discharge of the capacitor may be initiated to transfer energy to the mechanism. If the electrical mechanism has power, then a charging of the capacitor may be initiated to transfer energy to the capacitor. | 03-06-2014 |
20140062201 | SYSTEMS AND METHODS FOR DETECTING POWER QUALITY OF UNINTERRUPIBLE POWER SUPPLIES - A system may include an uninterruptible power supply (UPS) configured to provide power to a load via a bypass feed path coupled to a first power source or via an inverter feed path coupled to a second power source. The UPS may include a controller configured to switch between providing power to the load via the bypass feed path and the inverter feed path based at least in part on a real-time calculation of an amount of voltage distortion present on a voltage signal input to the load via the bypass path. As such, the controller may be configured to provide power to the load via the inverter feed path when the amount of voltage distortion is greater than a limit. | 03-06-2014 |
20140070615 | MULTIPURPOSE AUXILIARY ENERGY TRANSMISSION DEVICE - The subject of the invention relates to a multipurpose auxiliary energy transmission device for supplying electrical energy to portable electronic devices ( | 03-13-2014 |
20140070616 | POWER CONVERSION OUTPUT ARCHITECTURE - A power conversion output architecture applied to a redundant power supply system comprises a power integration panel and a power regulation output panel. The power integration panel includes a first integration circuit receiving primary power from a plurality of power supplies and integrating them into primary power integration, and a second integration circuit receiving standby power from the power supplies and integrating them into standby power integration. The power regulation output panel includes a power regulation circuit receiving the primary power integration and converting it into a secondary power, a first output circuit receiving and outputting the secondary power, a second output circuit receiving and outputting the primary power integration, a third output circuit receiving and outputting the standby power integration, and a power administration unit detecting the status of the primary power integration, the standby power integration and the secondary power. | 03-13-2014 |
20140070617 | METHOD AND APPARATUS FOR STABALIZING POWER ON AN ELECTRICAL GRID USING NETWORKED DISTRIBUTED ENERGY STORAGE SYSTEMS - Embodiments of the present invention include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. These distributed energy storage systems can operate semi-autonomously, and can be configured to develop energy control solutions for an electric load location based on various data inputs and communicate these energy control solutions to the distributed energy storage systems. In some embodiments, one or more distributed energy storage systems may be used to absorb and/or deliver power to the electric grid in an effort to provide assistance to or correct for power transmission and distribution problems found on the electric grid outside of an electric load location. In some cases, two or more distributed energy storage systems are used to form a controlled and coordinated response to the problems seen on the electric grid. | 03-13-2014 |
20140077602 | POWER SUPPLY SYSTEM AND METHOD FOR CONTROLLING THE SAME - A power supply system and a method for controlling the same are disclosed. The power supply system includes: a first AC source and a second AC source; a circuit switching module; a controllable AC/DC conversion module electrically coupled to the circuit switching module; a subsequent stage power supply module electrically coupled to the controllable AC/DC conversion module; and a control module electrically coupled to the circuit switching module and the controllable AC/DC conversion module, and when failure occurs in any one of the first AC source and the second AC source, configured to control the circuit switching module to switch to the other one of the first AC source and the second AC source which is in normal operation. By employing the power supply system and the method for controlling the same provided by the present application, the cost may be reduced and the reliability may be increased. | 03-20-2014 |
20140077603 | POWER SUPPLY APPARATUS WITH POWER BACKUP MECHANISM - A power supply apparatus is provided. The provided power supply apparatus has a power backup mechanism, in which a main DC power and a backup DC power are switched by a fast switching circuit composed of a plurality of switch transistors. Since the switching time of each switch transistor is substantially shorter than that of the conventional relay, the backup DC power can be conducted to the input of the multi-output DC-DC converter at a quite-short time even though the main DC power is abnormal. Accordingly, the output of the multi-output DC-DC converter still can continuously and stably supply the operation power required by the load. | 03-20-2014 |
20140097689 | Static Transfer Switch Off Detection And Transfer Management - A static transfer switch is used for switching an output load from a first power source to a second power source. A first switching unit has a first pair of silicon controlled rectifiers (SCR). A second switching unit has a second pair of SCRs arranged in an anti-parallel configuration. The control circuit determines whether at least one of the SCRs is activated in accordance with the voltage between the gate and the cathode of the at least one SCR. If the voltage between the gate in the cathode is at least 150 mV, the control circuit indicates that the at least one of the SCR is activated. | 04-10-2014 |
20140097690 | Uninterruptible Power Supply System With Fast Transfer For Undervoltage Source Line Failures - A UPS system may be operated selectively in either a high efficiency mode or a low efficiency mode. An inductor is connected in series between the transfer switch and a secondary power source. The transfer switch includes thyristors arranged in a reverse connected configuration. A controller synchronizes gate commands to the thyristors in order to synchronize reserve voltage introduced by the inverter. If the load currents are not in phase with a fundamental voltage of the secondary power source, the controller waits up to a first time period in order to estimate when current through the switches will reach zero. If the out of phase current will reach zero by the end of a second time period, the inverter is switched on at the end of the second time period. | 04-10-2014 |
20140103725 | DIGITAL CONTROL METHOD FOR OPERATING UPS SYSTEMS IN PARALLEL - Systems and methods of operating uninterruptible power supplies in parallel in a power distribution system to provide power to a load are provided. At least one uninterruptible power supply inverter provides power to the load. A communication interface provides a measured value of at least one of inverter output current of a first uninterruptible power supply and a measured value of the load current to a second uninterruptible power supply, and receives a measured value of at least one of inverter output current of the second uninterruptible power supply and the load current. A controller controls the uninterruptible power supplies to operate in one of a master state and a slave state. In the master state the uninterruptible power supply is configured to control the voltage to the load, and in the slave state the uninterruptible power supply is configured to determine a reference output current value based at least in part on at least one of the measured value of inverter output current of the second uninterruptible power supply and the measured value of the load current. The uninterruptible power supply in the slave state drives its inverter output current toward the reference output current value to provide its share of the load current. | 04-17-2014 |
20140117764 | UPS SYSTEMS AND METHODS USING MODE-DEPENDENT GROUNDING - A UPS system includes an inverter circuit having an input coupled to a DC link and an output configured to be coupled to a load and a gang switch (e.g., a contactor) configured to couple and decouple the DC link to and from a DC power source and to couple and decouple a neutral point of the inverter circuit to and from a ground node. The gang switch may be configured to couple the neutral point to the ground node when the DC link is coupled to the DC power source and to decouple the neutral point from the ground node when the DC link is decoupled from the DC power source. | 05-01-2014 |
20140132073 | POWER CONDITIONER, CONTROL METHOD AND POWER GENERATION SYSTEM - Provided is a power conditioner that can stably obtain direct current output even when disconnection occurs. The power conditioner includes a DC/DC converter ( | 05-15-2014 |
20140152108 | DISCHARGE CONTROL SYSTEM AND DISCHARGE DEVICE - A discharge control system includes: a command unit configured to issue a discharge command to discharge electric charge stored in a capacitor and a discharge stop command to stop discharging the electric charge; a first power supply configured to supply electric power to the command unit; a discharge circuit unit configured to discharge the electric charge in accordance with the discharge command and stop discharging the electric charge in accordance with the discharge stop command; a power supply monitoring unit configured to monitor a state of the first power supply; and a discharge stop control unit configured to when the discharge circuit unit has received the discharge stop command after the discharge circuit unit starts discharging the electric charge, switch whether to stop discharging the electric charge on the basis of a result monitored by the power supply monitoring unit. | 06-05-2014 |
20140183955 | System For Common Redundant Bypass Feed Paths In Uninterruptible Power Supplies - An uninterruptible power supply (UPS) system includes an inverter feed path and a plurality of bypass feed paths configured to couple to an AC voltage source such that each bypass feed path includes a switch configured to couple the AC voltage source to the load when closed. The switch in each bypass feed path may be rated to conduct current that corresponds to an output of the inverter feed path. Each bypass feed path may be coupled in parallel with each other and the inverter feed path. The UPS system may also include at least one controller coupled to a respective inverter and to a respective rectifier in the inverter feed path and a plurality of controllers. Each controller may be coupled to a respective switch such that the at least one controller and the plurality of controllers communicate with each other via at least two communication buses. | 07-03-2014 |
20140183956 | AC BACKUP POWER SYSTEM - An AC backup power system controls a power supply to selectively connect to a primary AC power source or a backup AC power source through a switching module. The switching module is controlled by a monitoring module. The monitoring module has a power monitoring unit, a first circuit switch, a second circuit switch, and a first processor. When the power monitoring unit detects an interruption of primary AC current, the first circuit switch that is normally closed is immediately turned off. The first processor then drives the switching module to connect to the backup AC power source. Once the backup AC power source reaches the zero-crossing point, the second circuit switch is turned on so that the backup AC power source provides power to the power supply. The power supply receives power at the zero-crossing point to avoid problems of sparks and coke deposition. | 07-03-2014 |
20140183957 | FRAME (Forced Recuperation, Aggregation and Movement of Exergy) - The present invention is directed to an apparatus for more efficient exergy and power usage in data centers. Denominated FRAME (standing for “Forced Recuperation, Aggregation & Movement of Exergy”), the apparatus is a power production and exergy management system (exergy being energy available to do useful work, as opposed to energy, which can be changed to a form, usually heat, rendering it unavailable). The apparatus integrates generally isothermal operation with phase-change and single-phase liquid cooling having variable operating temperatures and pressures, aided by a dynamically reconfigurable “thermal bus” comprising multi-fluid thermal fluid transport channels, virtual plumbing, and associated support devices. The apparatus minimizes exergy use through efficient operation and by recuperating and aggregating useful exergy that may then be dynamically repurposed to meet energy or power needs that would otherwise have to be met via external means. | 07-03-2014 |
20140203648 | AUTOMATIC TRANSFER SWITCH - Aspects of the present disclosure involve systems, methods, and the like, for an automatic transfer switch (ATS) of a power system. The ATS allows for switching between two or more power systems while preventing back-feeding of the power systems. To provide the safety features of the ATS, a safety circuit and control board may be implemented with the magnetic latching relays to control the actions of the latching relays and provide the switching function of the ATS. In one particular embodiment, the safety board comprises one or more electromechanical relays positioned between the controlling electronics of the control board and the magnetic latching relays. The safety board design contains measures to ensure it still functions if one of the disconnect switches is not connected, if one of the connections to a first load phase, a second load phase or neutral is lost and if the main control board is not connected. | 07-24-2014 |
20140210269 | POWER SUPPLY SYSTEM HAVING AN EMERGENCY POWER SUPPLY CUTOFF FUNCTION - A power supply system having a power supply cut-off function in an emergency is provided. The present system includes a power supply device for receiving and supplying external input power to a device for power supply, a remote controller for controlling an operation of the power supply device according to a remote control signal from a remote place, an uninterruptible power supply device for supplying operation power to the remote controller, a first line switch for, when a power switch is turned on, supplying the external input power to the power supply device and the uninterruptible power supply device, and a second line switch disposed between the power supply device and the first line switch and cutting off the external input power supplied to the power supply device via the first line switch when the uninterruptible power supply device does not output the power. According to the present invention, even when the remote controller is out of order in the emergency, the power supply of the power supply device can be cut off using the interrupted power supply device to thus enhance stability and reliability of the equipment. | 07-31-2014 |
20140210270 | METHOD AND SYSTEM FOR ESTABLISHING A POWER FEED TO SYSTEMS DURING OPERATION - A method of adding a power feed to electrical systems includes coupling a set of input lines to a power source such that the input lines are connected to at least one phase of AC power from the power source, and coupling a set of backfeed lines to an output receptacle in a power distribution unit. The output receptacle may be connected in parallel with at least one other output receptacle that is supplying primary power to systems in the data center. The set of backfeed lines and the set of input lines may be tested to determine a match between a pair of lines in the set of backfeed lines and a pair of lines in the set of input lines. Determining the match may include matching the phase of the pair of backfeed lines with the phase of the pair of input lines. | 07-31-2014 |
20140246910 | Methods and Systems for Dynamic Memory Backup for Transfer-Switch Controllers - Methods and systems for transfer-switch controller backup and transfer-switch controller operation are provided. An example backup apparatus includes a memory configured to store transfer-switch data related to a first transfer-switch controller, wherein the first transfer switch-controller is a controller for a given transfer switch. The apparatus is capable of interfacing with a communication interface of the first transfer-switch controller. The apparatus is further capable of being removed from the communication interface of the first transfer-switch controller and thereafter interfacing with a communication interface of a second transfer-switch controller, wherein the second transfer-switch controller is a replacement controller for the given transfer switch. The memory is further configured to, after the apparatus interfacing with the communication interface of the second transfer-switch controller, provide the transfer-switch data related to the first transfer-switch controller to the second transfer-switch controller. | 09-04-2014 |
20140252861 | STANDBY POWER SUPPLY CIRCUIT FOR 2-WIRE BUS INTERCOM SYSTEM AND APPARATUS THEREOF - The present invention discloses a standby power supply circuit for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit is separated into two power supply modules; in which the first power supply module is a power supply to standby circuit and the second power supply module is a power supply to operation circuit; said power supply to operation circuit is switched off by a constant current switch when the device load is at the standby status; and said power supply to standby circuit comprises a constant current circuit whose alternating current impedance is very large. The solutions of the present invention achieve larger alternating current impedance for the 2-wire intercom system, which can offer sufficient power for many device loads both in the conditions of operation and standby statuses. | 09-11-2014 |
20140265591 | Auto-Synchronous Isolated Inlet Power Converter - An auto-synchronous isolated inlet power converter is disclosed that can be daisy-chained with other power converters and/or an alternating current (AC) power source. The power converter automatically generates output AC power that is in parallel with external input AC power coming into the power converter when the power converter senses the external input AC power so that the power converter operates as a slave in this state. The power converter automatically generates output AC power when the power converter fails to detect the external input AC power coming into the power converter where the power converter operates as a master in this state. The power converter generates the output AC power without any reliance on the external input AC power generated by a utility grid and/or other AC power sources external to the power converter. | 09-18-2014 |
20140292086 | Dual Supply Override - A monolithically integrated circuit with one or more supply overrides without need of an override control pin to the IC is presented. The internal circuitry to control such an override is presented and various override conditions are also presented. | 10-02-2014 |
20140300193 | POWER SAFETY CIRCUIT, INTEGRATED CIRCUIT DEVICE AND SAFETY CRITICAL SYSTEM - A power safety circuit comprises a power sense terminal; an output terminal; an output driver unit connected to the output terminal; an input terminal connectable to receive a first power from a power source and arranged to supply the first power to the output driver unit; and a power detection unit arranged to detect a state of the input terminal and provide a power sense signal to the power sense terminal; wherein the power sense terminal is arranged to supply a second power to the output driver unit when the power sense signal indicates a level of the first power below a minimum level for driving the output terminal. An integrated circuit device comprises at least one power safety circuit. A safety critical system comprises at least one integrated circuit device with at least one power safety circuit. | 10-09-2014 |
20140306537 | Power Management System and Method for Optimizing Fuel Consumption - The present disclosure describes embodiments of an efficient power management system and method for fuel efficiency. The power management system comprises an energy storage unit, at least one renewable energy resource, a controller and an engine. The engine is configured to operate at varying speeds to provide mechanical energy to a variable speed DC generator to generate power to charge up the energy storage unit. The speed of the engine is varied in response to a speed reference determined by the controller. | 10-16-2014 |
20140312696 | MOSFET GATE DRIVING CIRCUIT FOR TRANSITION SOFTENING - A power supply unit for use with thermostats or other like devices requiring power. A power supply unit may be designed to keep electromagnetic interference emissions at a minimum, particularly at a level that does not violate governmental regulations. A unit may be designed so that there is enough power for a triggering a switch at about a cross over point of a waveform of input power to the unit. Power for triggering may come from a storage source rather than line power to reduce emissions on the power line. Power for the storage source may be provided with power stealing. Power stealing may require switching transistors which can generate emissions. Gate signals to the transistors may be especially shaped to keep emissions from transistor switching at a minimum. | 10-23-2014 |
20140312697 | ACTIVE TRIAC TRIGGERING CIRCUIT - A power supply unit for use with thermostats or other like devices requiring power. A power supply unit may be designed to keep electromagnetic interference emissions at a minimum, particularly at a level that does not violate governmental regulations. A unit may be designed so that there is enough power for a triggering a switch at about a cross over point of a waveform of input power to the unit. Power for triggering may come from a storage source rather than line power to reduce emissions on the power line. Power for the storage source may be provided with power stealing. Power stealing may require switching transistors which can generate emissions. Gate signals to the transistors may be especially shaped to keep emissions from transistor switching at a minimum. | 10-23-2014 |
20140361623 | AUXILIARY POWER SUPPLY FOR LIGHTING DRIVER CIRCUITRY - Techniques for supplying auxiliary power to lighting driver circuitry are disclosed. An auxiliary power supply can be used, for example, to provide auxiliary power to a current source that drives an LED string. In some embodiments, the LED string is effectively used as a series resistor to charge a capacitor that provides the auxiliary voltage V | 12-11-2014 |
20140368042 | SYSTEMS AND METHODS FOR MULTI-USE MULTI-MODE UPS - A multi-mode uninterruptible power supply (UPS) is provided. The multi-mode UPS includes a first path including a rectifier and an inverter, and a second path in parallel with the first path, wherein the multi-mode UPS is operable in an economy mode in which power flows from a utility to a load through the second path while at least one of the rectifier and the inverter is activated, the at least one of the rectifier and the inverter operable to perform at least one of DC voltage regulation, reactive power compensation, and active damping. | 12-18-2014 |
20150008744 | UPS SYSTEMS AND METHODS USING DUAL MODE RECTIFIER/INVERTER - An uninterruptible power supply (UPS system) includes a first converter circuit, a second converter circuit and a DC bus coupled to the first and second converter circuits. The system further includes a control circuit configured to control the first and second converter circuits and to selectively couple the first and second converter circuits to an AC source and a load to provide a first mode of operation wherein the first and second converter circuits respectively operate as a rectifier and an inverter to serve the load from the AC source and a second mode of operation wherein the first and second converter circuits operate as parallel inverters to serve the load from the DC bus. The control circuit may be configured to couple the AC source to the load to bypass the first and second converter circuits in a third mode of operation. | 01-08-2015 |
20150008745 | UPS SYSTEMS AND METHODS USING VARIABLE CONFIGURATION MODULES - A system includes a plurality of module locations at which uninterruptible power supply (UPS) modules are installable and a control circuit configured to selectively support standby UPS and on-line UPS operation of modules installed at the plurality of module locations. The system may include a plurality of UPS modules installed in the plurality of module locations and including at least one UPS module configured to operate as a standby UPS. The plurality of UPS modules may further include at least one UPS module configured to operate as an on-line UPS. The UPS modules may share a common architecture including a submodule location at which a submodule is installable and circuitry configured to support operation of submodules with different functions in the submodule location. | 01-08-2015 |
20150015073 | POWER SUPPLY CIRCUIT - A power supply circuit includes a connector, a first power supply module, and a second power supply module. The first power supply module is connected to, and supplies power to, the connector. The second power supply module is connected to the connector and the first power supply module. The first power supply module stops supplying power to the connector and outputs a control signal to the second power supply module when a current flowing through the first power supply module exceeds a certain limit. The second power supply module supplies power to the connector when the second power supply module receives the control signal. | 01-15-2015 |
20150035367 | Power Source Conversion Module, Power Supply Apparatus and Power Supply Method - A power supply apparatus including: N+m power source conversion modules, where N power source conversion modules are main power source conversion modules; a power source conversion module includes a detection and switching unit and a conversion unit, where the detection and switching unit is separately connected to an output end of a first alternating current power source and an output end of a second alternating current power source, and the detection and switching unit is configured to monitor in real time a working state of the first alternating current power source and a working state of the second alternating current power source, close a channel between the conversion unit and one power source, which is in a normal working state, of the first alternating current power source and the second alternating current power source. | 02-05-2015 |
20150061394 | BACKUP POWER SUPPLYING DEVICE HAVING PROGRAMMABLE CURRENT-BALANCING CONTROL - A backup power supplying device having programmable current-balancing control includes at least two power modules connected in parallel. The power module includes a power converter, a current sensing component, a potential tuner, a microprocessor, a current-balancing control circuit and an output voltage controller. The current sensing component senses an output current of the power converter to generate a current sensing signal. The microprocessor controls the potential tuner to generate a tuning signal, and receives a mode signal to control the power module to operate in a power supply or sleep mode. The current-balancing control circuit receives the current sensing signal, the tuning signal and the mode signal. When the power module operates in the sleep mode, an output voltage of the power converter is a sleep voltage; a voltage level of the sleep voltage is lower than a voltage level of a supply voltage by a predetermined voltage value. | 03-05-2015 |
20150069842 | POWER SUPPLY CONVERSION SYSTEM AND METHOD OF CONTROLLING THE SAME - A power supply conversion system receives an external power source to supply power to a load. The power supply conversion system includes at least one main power apparatus, at least one auxiliary power apparatus, a main switch, an auxiliary switch, and a control unit. The control unit turns on the main switch to restore the external power source when the control unit detects that the external power source is normally restored, and jointly supply power to the load with the auxiliary power apparatus. Especially, the output voltage of the main power apparatus is greater than the output voltage of the auxiliary power apparatus. In addition, the control unit disconnects the auxiliary power apparatus supplying power to the load when the control unit detects that the main power apparatus completely supplies power to the load. | 03-12-2015 |
20150076912 | AUTO-SWITCHING DUPLEX MODULE - A system and method (“utility”) for providing power to an electrically powered device from alternate, redundant power sources via a single power cord. The utility is operable to provide redundant power to an electrical device having a power cord terminating in a standard plug. The utility is operable to sense a loss of power quality from one power source, and to switch a connection to another power source in response to the loss. The utility may be configured to match the form factor of a standard (e.g., NEMA or other electrical standard) duplex receptacle unit. The utility may be incorporated into a standard outlet box or may plug into a standard outlet box. | 03-19-2015 |
20150076913 | POWER CONVERTER WITH DIGITAL CURRENT CONTROL CIRCUIT - A current control circuit ( | 03-19-2015 |
20150084423 | LINE BALANCING UPS - 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 includes 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 a second input current drawn from a second phase of the polyphase power input by a second amount. The UPS may determine to reduce the load on the first phase in response to a request from a smart grid to reduce the load on the first phase or in response to a local determination to reduce the load on the first phase. | 03-26-2015 |
20150097436 | Busbar Connection Assembly - Various embodiments of a busbar connection assembly comprise a first conductive plate and a second conductive plate. The first conductive plate is parallel to the second conductive plate. A slot is formed between the first conductive plate and the second conductive | 04-09-2015 |
20150115719 | Transfer Switch with Bypass Topology - An automatic transfer switch (ATS) for supplying power to a load is provided. The ATS includes a main transfer switch portion configured to connect one of a first or second power source to the load. The ATS also includes a bypass transfer switch portion configured to form a bypass connection from either the first or second power source to the load. The bypass transfer switch portion includes (i) a first bypass switch configured to connect the first power source to the load upon closing of the first bypass switch and (ii) a second bypass switch configured to connect the second power source to the load upon closing of the second bypass switch. Further, the ATS includes a primary load connection connecting the main transfer switch portion to the load, where the primary load connection is formed at least in part by the first and second bypass switches. | 04-30-2015 |
20150130279 | POWER SUPPLY WITH DUAL ASYMMETRICAL INPUTS - A dual asymmetric input power supply architecture for use in power systems employing input power source redundancy. The dual asymmetric input power supply operates from a main input of the power supply when acceptable voltage is present on the main input. If the main input fails or is out of tolerance, power can be supplied from an auxiliary input through a transformer isolated switching converter. The dual asymmetric input power supply architecture maintains the high efficiency of a single-input power supply while providing an auxiliary connection for input power source redundancy. | 05-14-2015 |
20150295404 | CHANGEOVER METHOD OF HVDC TRANSMISSION SYSTEM - A changeover method of a high voltage direct current (HVDC) transmission system is provided. A first system is set to an active state. A ready signal is transmitted from the first system to a first COL. A ready detection signal and an active signal are transmitted to the first system, in response to the ready signal. A confirm signal is transmitted to the first system in response to the active signal when the ready detection signal matches the ready signal. | 10-15-2015 |
20150303688 | POWER SUPPLY APPARATUS AND POWER SUPPLY METHOD - A power supply apparatus including a master power converter and a slave power converter is provided. The master power converter generates a main power having a working voltage level. The slave power converter generates an auxiliary power. According to its operation state, the master power converter provides a corresponding control signal to the slave power converter. If the master power converter determines the operation state is a first operation state, the slave power converter generates the auxiliary power having a voltage level lower than the working voltage level, so that the slave power converter can be operated in a no-load conversion state. If the master power converter determines the operation state is a second operation state, the slave power converter raises the voltage level of the auxiliary power to the working voltage level, so that the auxiliary power replacing the main power is supplied to a load. | 10-22-2015 |
20150311748 | MONITOR HOUSING APPARATUS - A monitor housing apparatus comprises an opening and closing mechanism, a drive motor, a power supply, a backup capacitor, a contact switch, and a controller. The opening and closing mechanism turns a monitor around a rotation shaft. The power supply supplies electrical power to the drive motor. The backup capacitor supplies power to the drive motor in the event that the supply of power from the power supply to the drive motor is shut off. The controller applies voltage to the backup capacitor when the contact switch detects that the monitor is in its deployed state, and halts the application of voltage from the power supply to the backup capacitor when the contact switch detects that the monitor is in its stowed state. | 10-29-2015 |
20150323977 | PARALLEL REDUNDANT POWER DISTRIBUTION - Systems and methods are provided for reliable redundant power distribution. Some embodiments include micro Automatic Transfer Switches (micro-ATSs), including various components and techniques for facilitating reliable auto-switching functionality in a small footprint (e.g., less than ten cubic inches, with at least one dimension being less than a standard NEMA rack height). Other embodiments include systems and techniques for integrating a number of micro-ATSs into a parallel auto-switching module for redundant power delivery to a number of devices. Implementations of the parallel auto-switching module are configured to be mounted in, on top of, or on the side of standard equipment racks. Still other embodiments provide power distribution topologies that exploit functionality of the micro-ATSs and/or the parallel micro-ATS modules. | 11-12-2015 |
20150333566 | A SYSTEM AND METHOD FOR VOLTAGE REGULATION IN A VOLTAGE SUPPLY - Disclosed is an uninterruptable power supply comprising a switchable input power converter having an input operable to receive a supply power network voltage, the power network voltage being subject to fluctuations which may give rise to a disturbance to any load connected to the power network; and a voltage regulation circuit for controlling the switchable input power converter, thereby regulating its output. The voltage regulation circuit senses the power network voltage; and causes the uninterruptable power supply to generate from the sensed power network voltage a compensatory reactive current indicative of the voltage fluctuations on the power network voltage. The compensatory reactive current is used to compensate for the voltage fluctuations on the power network voltage. | 11-19-2015 |
20150378415 | BACK-UP POWER SUPPLY SYSTEMS AND METHODS FOR USE WITH SOLID STATE STORAGE DEVICES - Back-up power systems and methods for use with solid-state storage systems. A back-up power device includes an energy storage unit and first and second connections. A charge source is attachable to the first connection, the charge source providing a charge current to the first connection, with the charge current circumventing or bypassing a data storage device, wherein the first connection provides the charge current to the charging circuit, and the charging circuit charges the energy storage unit. The data storage device is attachable to the second connection, the energy storage unit providing a back-up power to the second connection, with the second connection providing the back-up power to the data storage device. The power pack is particularly useful for providing back up power to a data storage module or device that includes volatile and non-volatile memory units, such as a PCIe based data storage module. | 12-31-2015 |
20150380885 | Busbar Connection Assembly - According to various embodiments, a datacenter busbar conductor may be inserted into an opening that is formed between a first conductor and a second conductor of a busbar connection assembly. The busbar connection assembly can be restricted from being removed from the opening that is formed between the first conductor and the second conductor. The busbar connection assembly can be electrically coupled to an electrical power source. | 12-31-2015 |
20160006247 | POWER SUPPLY METHOD AND APPARATUS - Embodiments of the present invention disclose a power supply method, including: rectifying a second alternating current, and converting the second alternating current into a second high voltage direct current; when the second high voltage direct current is abnormal, inputting a third high voltage direct current to a DC/DC module; when the second high voltage direct current is normal, inputting the second high voltage direct current to the DC/DC module; and converting, by the DC/DC module, the second high voltage direct current or the third high voltage direct current into a low voltage direct current for outputting. | 01-07-2016 |
20160006296 | Systems And Methods For Matching End Of Life For Multiple Batteries And/Or Battery Backup Units - A system includes a first converter, a second converter, a first rechargeable battery configured to output a current to the first converter, a second rechargeable battery configured to output a current to the second converter, and a control circuit coupled to the converters. Each rechargeable battery has a capacity and a number of remaining discharge cycles. The control circuit is configured to determine a remaining lifetime energy throughput of the first rechargeable battery and the second rechargeable battery based on their respective capacity and number of remaining discharge cycles, and in response to the remaining lifetime energy throughput of the first rechargeable battery and the remaining lifetime energy throughput of the second rechargeable battery not being substantially equal, control the first converter to adjust the current from the first rechargeable battery to change a rate of decrease of the remaining lifetime energy throughput of the first rechargeable battery. | 01-07-2016 |
20160006297 | UNINTERRUPTABLE DC POWER SUPPLY PROVIDING SEAMLESS DC POWER TO LOAD - Provided is an uninterruptible direct current (DC) power supply system, which includes a first connection unit electrically connected to a DC power conversion system which converts prevailing AC power into the DC power, a second connection unit which is electrically connected to the load and supplies the DC power to the load, an auxiliary power supply charged by the DC power, and an uninterruptible control unit which supplies the DC power supplied from the DC power conversion system normally connected to the first connection unit to the load through the second connection unit, charges the auxiliary power supply, and controls power to be continuously supplied to the load while perfectly cutting off electrical connection between the DC power conversion system and the auxiliary power supply when the DC power conversion system is disconnected from the first connection unit, is damaged, or short-circuits. | 01-07-2016 |
20160006300 | REMOTE TERMINAL UNIT MODULAR EQUIPMENT - A telecontrol equipment item ( | 01-07-2016 |
20160013727 | APPARATUS, SYSTEM AND METHOD FOR PROVIDING POWER ANYWHERE IN A RETAIL STORE ENVIRONMENT | 01-14-2016 |
20160056634 | HOME APPLIANCE AND OPERATING METHOD THEREOF - A home appliance includes a driver to drive a load, a power supply to convert AC power supplied from an outside of the home appliance, and to receive DC power during interruption of electric power, and a controller (1) to perform a control operation to supply first electric power based on the supplied AC power to the load in accordance with a normal operation mode when no interruption of electric power occurs, (2) to perform a control operation to supply second electric power based on the supplied DC power to the load in accordance with the normal operation mode when no interruption of electric power occurs, and (3) to perform a control operation to supply third electric power based on the supplied DC power to the load in accordance with a power saving mode upon the interruption of electric power. | 02-25-2016 |
20160064998 | POWER SUPPLY CONTROL CIRCUIT AND POWER SUPPLY DEVICE - A power supply control circuit, which is connected to a stabilized direct current power supply having a pair of first and second output terminals and a pair of first and second remote sensing terminals, includes: a current detector configured to detect an output current that is supplied to a load from the stabilized direct current power supply, and to output a current detection voltage; a current difference output unit configured to output a current difference voltage corresponding to a voltage difference between the current detection voltage and a current setting voltage; and a control voltage generator configured to generate a control voltage and output the control voltage to the first remote sensing terminal so as to perform a constant current control operation. The current detector, the current difference output unit and the control voltage generator are operated by only the direct current voltage supplied by the auxiliary power supply. | 03-03-2016 |
20160065001 | SEMICONDUCTOR DEVICE - The disclosed invention is intended to prevent malfunction of an internal circuit because of unwanted power supply switching caused by a noise during operation of a semiconductor device powered by a backup power supply, while eliminating wasteful consumption of the backup power supply. A first switching transition time after coupling the main power supply terminal to the internal power supply node until decoupling the backup power supply terminal from the internal power supply node is made longer than a second switching transition time after coupling the backup power supply terminal to the internal power supply node until decoupling the main power supply terminal from the internal power supply node. | 03-03-2016 |
20160065003 | POWER SYSTEM AND METHOD - A power system including a variable speed generator set for supplying power to an electrical power grid is provided. The generator set includes an engine and a generator. A power converter is connected to the generator set and a DC bus. The power converter is configured to convert the electrical power provided by the generator set and supply the converted power to the bus. The system includes an energy storage device and a DC to DC converter connected to the energy storage device and the DC bus. A controller is configured to control the amount of power supplied by the energy storage device to the power grid. | 03-03-2016 |
20160066912 | CIRCUITRY AND SENSORS FOR POWERED MEDICAL DEVICE - An end effector is disclosed. The end effector comprises a first jaw member comprising a magnetic sensor; a second jaw member pivotally coupled to the first jaw member such that the first jaw member is pivotally moveable between an open position and a closed position, wherein the second jaw member is configured to receive a staple cartridge therein; a staple cartridge removably coupled to the second jaw member, the staple cartridge further comprising an upper surface facing the first jaw member; and a magnet positioned to be in an opposing relationship to the magnetic sensor when the first jaw member is in the closed position. The magnetic sensor is operable to detect the magnetic field of the magnet, and wherein the detected magnetic field is indicative of the distance between the anvil and the staple cartridge. | 03-10-2016 |
20160072286 | METHOD AND SYSTEM FOR ESTABLISHING A POWER FEED TO SYSTEMS DURING OPERATION - A method of adding a power feed to electrical systems includes coupling a set of input lines to a power source such that the input lines are connected to at least one phase of AC power from the power source, and coupling a set of backfeed lines to an output receptacle in a power distribution unit. The output receptacle may be connected in parallel with at least one other output receptacle that is supplying primary power to systems in the data center. The set of backfeed lines and the set of input lines may be tested to determine a match between a pair of lines in the set of backfeed lines and a pair of lines in the set of input lines. Determining the match may include matching the phase of the pair of backfeed lines with the phase of the pair of input lines. | 03-10-2016 |
20160111916 | UNINTERRUPTIBLE POWER SUPPLY CONTROL - According to one aspect, embodiments herein provide a UPS comprising a first input configured to receive input power, a second input configured to receive backup power, an output, a bypass line selectively coupled between the first input and the output via a bypass switch, wherein in a bypass mode of operation, the bypass switch is closed and the input power is provided directly to the output, 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 in an online mode of operation, the inverter switch is closed and the inverter converts the input power into the output AC power, and means for operating the inverter to force commutate current in the bypass line after a transition from the bypass to the online mode of operation. | 04-21-2016 |
20160111919 | AUTOMATIC SOLAR POWER SYSTEM ISOLATION SWITCH - In the case of solar, wind, or other such resource being chosen as a primary power system (hereafter means “normal state”) of a dwelling or recreational vehicle, this process is for automatic protection or disconnection of the preferred electrical system whenever an alternate power source is applied. | 04-21-2016 |
20160126785 | ALARM SYSTEM FOR POWER SUPPLY - An alarm system for power supply includes a power supply unit, an electronic device, a control unit, and a switch unit. The power supply unit includes a battery. The battery outputs a power supply voltage. The power supply receives a standby DC voltage, and outputs a first voltage level signal according to the standby DC voltage and the power supply voltage. The electronic device outputs a second voltage level signal. The control unit receives the first voltage level signal and the second voltage level signal, and outputs a control signal in accordance. The switch unit receives the control signal, and sounds alert when there is no electric charge in the battery. | 05-05-2016 |
20160134159 | SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD THEREOF - A semiconductor integrated circuit included a power supply circuit having a first input terminal, a second input terminal, and an output terminal, wherein the power supply circuit includes a measurement circuit and a switch circuit, wherein the measurement circuit compares a first voltage supplied to the first input terminal with a second voltage supplied to the second input terminal, outputs a determination signal as the comparing result and operates on the first voltage, wherein the switch circuit selects the first input terminal or the second input terminal and couples the selected terminal with the output terminal in response to the determination signal, wherein a main power supply voltage from a main power supply can be supplied to the first input terminal, and wherein an auxiliary power supply voltage from an auxiliary power supply can be supplied to the second input terminal. | 05-12-2016 |
20160156222 | INTERRUPTION OF OUTPUT POWER AND AUXILIARY POWER | 06-02-2016 |
20160164342 | VBUS POWER SWITCH - This document discusses, among other things, an electronic circuit and method for defaulting to a valid battery supply to power an electronic device. In an example, an electronic circuit can be configured to receive information about the battery supply (e.g., an internal battery), such as the battery supply voltage (V | 06-09-2016 |
20160172900 | MODULAR UNINTERRUPTIBLE POWER SUPPLY APPARATUS AND METHODS OF OPERATING SAME | 06-16-2016 |
20160181862 | ENERGIZING A POWER SUPPLY IN RESPONSE TO A DISABLEMENT OF A RELAY | 06-23-2016 |
20160190866 | POWER CONTROL DEVICE - A power control device for controlling electrical power transferred between an AC power grid and a load or between the AC power grid and an auxiliary power source. For example, the power control device may be configured to monitor an electrical characteristic of electrical energy supplied by the AC power grid to the load and to adjust a consumption of the electrical energy by the load when the electrical characteristic indicates that the AC power grid is no longer in a state of balance. As another example, the power control device may be configured to control an electrical energy injection process during which an injection of electrical energy from the auxiliary power source into the AC power grid is increased in relation to a detected rate of deviation of the AC power grid frequency. As yet another example, the power control device may be configured to adjust an injection of electrical energy into the AC power grid according to a magnitude of kinetic energy bleed from the AC power grid that is derived during an occurrence of a power generation deficit within the AC power grid. | 06-30-2016 |
20160197482 | UTILIZATION OF DISTRIBUTED GENERATOR INVERTERS AS STATCOM | 07-07-2016 |
20160197517 | Smart Transfer Switch Devices, Systems, and Methods Using Double-Base Bipolar Transistors | 07-07-2016 |
20160204653 | SEMICONDUCTOR DEVICE BEING CAPABLE OF IMPROVING THE BREAKDOWN CHARACTERISTICS | 07-14-2016 |
20160254668 | SYSTEM FOR TRANSMITTING ELECTRICAL POWER | 09-01-2016 |
20160380435 | INTEGRATED SOLAR PANEL - A solar panel is disclosed that can be daisy-chained with other solar panels. The solar panel automatically generates output alternative current (AC) power that is in parallel with input AC power coming into the solar panel when the solar panel senses the input AC power so that the solar panel operates as a slave in this state. The solar panel automatically generates standalone AC output power when the solar panel fails to detect input AC power coming into the solar panel where the solar panel operates as a master in this state. The solar panel generates the standalone output AC power without any reliance on input AC power generated by a utility grid and/or other AC power sources external to the solar panel. | 12-29-2016 |
20170237286 | Self-Aware Software Defined Digital Power Supply | 08-17-2017 |
20220140647 | POWER SUPPLY CONTROL SYSTEM - A power supply control system controls a redundant power supply system that includes a first power supply system and a second power supply system connected in parallel to a power supply unit. The first power supply system includes a first power supply and a first system. The second power supply system includes a second power supply and a second system. The power supply control system includes a first switch that is a MOSFET provided between the power supply unit and the first power supply, a second switch that is a MOSFET provided between the power supply unit and the second power supply, a wiring configured to supply a dark current flowing from the first power supply to the second system, a first relay of a normally-on type provided on the wiring, and a second relay of a normally-off type provided between the second power supply and the second switch. | 05-05-2022 |