| Entries |
| Document | Title | Date |
|---|
| 20080197705 | System including a microturbine and a high-frequency alternator generating backup power for a telecommunications system - A system includes an electrical load formed by a number of circuits within a system performing telecommunication functions, primary and backup sources of electrical power, and a relay that switches an input to the electrical load from the primary source to the backup source in response to determining that a failure has occurred within the primary source. The backup source includes a microturbine driving a six-phase, high-frequency alternator, which is turned on in response to determining that such a failure has occurred, and, preferably, a battery array that provides backup power when adequate power is not available from the alternator driven by the microturbine. | 08-21-2008 |
| 20080203822 | POWER SYSTEM FOR A DEVICE - A power system is designed for providing reliable electrical power to a facility and/or associated devices. The system includes one or more fuel cells and a circuit adapted to receive power from the one or more fuel cells. The circuit is electrically connected to a device receiving the electrical power from the system. Additionally, the system includes one or more capacitors included in the circuit, and being adapted for maintaining power in the circuit when the one or more fuel cells are temporarily unavailable. | 08-28-2008 |
| 20080211308 | PARALLEL-CONNECTED UNINTERRUPTIBLE POWER SUPPLY SYSTEM - Disclosed is a parallel-connected uninterruptible power supply system connected with a power source and a load. The uninterruptible power supply system includes a power distribution circuit having a first connector, a plurality of uninterruptible power supplies having a plurality of second connectors, and a plurality of transmission lines having a plurality of third connectors. The first connectors, the second connectors and the third connectors each includes a first conducting structure and a second conducting structure. When the second conducting structure of the third connector is detached from the second conducting structure of the first connector or the second conducting structure of the second connector, the second conducting structures are detached from each other first so that the pull-down circuit of the corresponding uninterruptible power supply generates a control signal to a controller to stop the operation of the uninterruptible power supply. Next, the third connector is detached from the first connector or the second connector so as to remove the malfunctioned uninterruptible power supply. | 09-04-2008 |
| 20080217998 | RENEWABLE ENERGY POWER SYSTEMS - A UPS with a multi-port DC bus operable to couple a plurality of intermittent external DC sources and intermittent external DC loads is disclosed. The invention includes renewable energy power systems with a UPS having a multi-port DC bus and a responsive energy storage means electrically coupled to the multi-port DC bus. An embodiment includes a renewable energy power system with a UPS having a multi-port DC bus having an external DC load coupling for supporting an external DC load. Exemplary DC sources disclosed include a pole-mountable wind turbine assisted by ducted hot air created by the waste heat from a solar-voltaic array that is also an exemplary DC source. A parking lot solar power system is also disclosed that is both a DC source and at least one DC load. A cogeneration system using the AC output of the UPS and the AC output of a genset is provided. | 09-11-2008 |
| 20080231119 | Uninterruptible power storage device - An uninterruptible power storage device includes multiple power sources and an uninterruptible power equipment, wherein the uninterruptible power equipment has functions of rectification, transformation and charging and comprises a battery for storing electricity, multiple input terminals for connecting to multiple power sources, a built-in power source distributor, which has a power factor correction/PV inverter, two MPPT chargers and a bridge rectifier, and an output terminal for connecting to an electric appliance. Through a power distribution by the power source distributor, a best beneficial result of power supply combining the power sources at the input terminals can be achieved. | 09-25-2008 |
| 20080265680 | METHOD FOR PULSE WIDTH MODULATION SYNCHRONIZATION IN A PARALLEL UPS SYSTEM - A method for pulse width modulated pulse synchronization in a parallel UPS system uses the locally measured critical bus voltage to detect a zero crossing and adjust the PWM pulse to coincide with the zero crossing. No communication between the units is required to perform synchronization, and no “master” and “slave” relationship exists to thereby increase the total system reliability. | 10-30-2008 |
| 20080265681 | Self-Testing Power Supply Apparatus, Methods and Computer Program Products - A power supply apparatus includes first and second parallel-connected uninterruptible power supplies (UPSs), each including an AC/DC converter circuit and a DC/AC converter circuit having an input coupled to an output of the AC/DC converter circuit by a DC link, inputs of the AC/DC converter circuits of the first and second UPSs connected in common to an AC source and outputs of the DC/AC converter circuits of the first and second UPSs connected in common to a load. The first and second UPSs are configured to support a test mode wherein the first UPS is test loaded by transferring power from the output of the DC/AC converter circuit of the first UPS to the output of the DC/AC converter circuit of the second UPS. The first UPS may be configured to provide power to the load concurrent with test loading by the second UPS. | 10-30-2008 |
| 20080272654 | Methods and apparatus for providing power to a notification appliance circuit - An arrangement for use in a safety notification system includes primary and secondary power sources and a voltage converter. The primary power source provides power to a notification appliance circuit of a notification system. The secondary power source includes at least one battery. The voltage converter is coupled between the battery and the notification appliance circuit of the notification system, and is configured to generate a regulated DC voltage from an output voltage generated by the second power source. In general, the secondary power source is employed when the primary power source is not available or otherwise is not functioning. However, the secondary power source may also be employed in other circumstances. | 11-06-2008 |
| 20080296973 | GRID INTERCONNECTION DEVICE, GRID INTERCONNECTION SYSTEM AND POWER CONTROL SYSTEM - The grid interconnection device connected to the bank where alternating-current power is transmitted and to the power supply device provided to a customer includes: a detector detecting start of the alternating-current power transmission based on a state of the alternating-current power; a receiver receiving a grid interconnection start instruction for starting grid interconnection between the bank and the power supply device; and a grid interconnection controller controlling the bank and the power supply device to be interconnected or separated, in which the grid interconnection controller starts grid interconnection between the bank and the power supply device upon receipt of the grid interconnection start instruction in a state where the start of the alternating-current power transmission is detected. | 12-04-2008 |
| 20090001816 | ELECTRICAL APPLIANCE THAT UTILIZES MULTIPLE POWER SOURCES - An electrical appliance ( | 01-01-2009 |
| 20090009001 | METHOD AND APPARATUS FOR SYNCHRONIZATION OF ACTIONS IN A PARALLEL UPS SYSTEM USING A SERIAL COMMUNICATIONS BUS - A serial communications bus is utilized to send key action data between parallel UPS units. The communications bus is used to transmit data at the zero crossing of the critical bus voltage. Each UPS unit then takes action based upon the event data received at the next zero crossing of the critical bus voltage. | 01-08-2009 |
| 20090033154 | REDUNDANT ISOLATION AND BYPASS OF CRITICAL POWER EQUIPMENT - A redundant power distribution system and a method of providing redundant isolation are described. The system includes a normal operation circuit branch and an external bypass circuit branch, enhanced with a generator bypass connection, both connected to a critical load, the generator bypass circuit branch including a diverse, redundant power source. The normal operation circuit branch delivers power to the critical load during normal operations and the external bypass circuit branch delivers power to the critical load from the redundant power source via the enhanced generator bypass connection during bypass operations. The system also allows the critical load to be electrically isolated from all of or a portion of the normal operation circuit branch. | 02-05-2009 |
| 20090051222 | Method And System For Providing Electrical Power To A Wind Turbine System - A method and system for providing backup electrical power to at least one wind turbine is provided. The method may include monitoring a first power system. The method may also include enabling a second power system when the first power system may no longer provide sufficient electrical power to the wind turbine. The method may also disable the second power system when the first power system can again provide sufficient electrical power to the wind turbine. | 02-26-2009 |
| 20090072623 | UNINTERRUPTIBLE POWER SUPPLY SYSTEM AND CONTROLLING METHOD THEREOF - A controlling method of uninterruptible power supply system comprising a first UPS and a second UPS for continuously providing power to a load is disclosed. The controlling method includes the steps of (a) determining if the first UPS is normal; (b) providing power to the load via the first UPS when the first UPS is normal and determining if the second UPS is normal when the first UPS is abnormal; and (c) providing power to the load through the second UPS when the second UPS is normal and providing the power to the load through a bypass route when the first UPS and the second UPS are both abnormal. | 03-19-2009 |
| 20090072624 | Green Data Center And Virtual Power Plant - A power system for cooling backup computer storage facilities having eight independent levels of redundancy for the power supply to allow the storage facility to survive even extreme and debilitating events and having redundant communications. If power from the existing gas or electric grid is lost, a series of back-up energy sources provide energy to run the micro-turbines and generate the power to run the servers and the HVAC system that cools the servers. In the event that the existing power grid is interrupted, the redundant power supplies are automatically engaged without disruption of the load. If the existing gas and/or electric power grids are disrupted, the storage facility is powered/cooled by a micro-grid having its own independent redundant sources of power. | 03-19-2009 |
| 20090152951 | Electric system for providing uninterruptible power - A power supply system is disclosed. The system may include at least one engine configured to provide a mechanical power output. The system may further include at least one generator operatively coupled to the at least one engine and configured to convert at least a portion of the mechanical power output into an AC electrical power output at a first frequency. The system may further include an uninterruptible power supply electrically coupled to the at least one generator, the uninterruptible power supply having at least one energy storage device configured to store an electrical power. The uninterruptible power supply may further include a power conversion device electrically coupled to the at least one energy storage device and the at least one generator and configured to convert the AC electrical power output at the first frequency and the electrical power stored in the at least one energy storage device to an AC electrical power at a second frequency. | 06-18-2009 |
| 20090174259 | Natural Energy Power Supplying Apparatus - A natural energy power supplying apparatus includes an AC power supply, an inverter, a UPS control circuit, a discharging control circuit, a battery, an electromagnetic switch, a natural energy power supply (NEPS) and a charging control circuit. The inverter is connected to the AC power supply in parallel for converting DC power to AC power. The UPS control circuit is connected to the AC power supply for converting between an AC power and a DC power. The discharging control circuit is connected to the UPS control circuit. The battery is connected to the UPS control circuit and the discharging control circuit respectively. The electromagnetic switch, having multiple normally open switches and multiple normally closed switches, is connected to the AC power supply. The NEPS is connected to the inverter by the normally open switches. The charging control circuit is connected to the NEPS by the normally closed switches, to the battery, to the discharging control circuit, and to the UPS control circuit. | 07-09-2009 |
| 20090174260 | UPS System having a Function of Parallel Operation - A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit is used to control the amplitude and the waveform of load voltage. The current feedforward control circuit is used to operate the DC/AC inverter of the UPS unit as a virtual fundamental resistor and a virtual harmonic resistor which are serially connected to an output terminal of the DC/AC inverter such that each UPS unit can be distributed to provide an output current according to the capacity ratio of the UPS system. | 07-09-2009 |
| 20090206671 | BACKUP POWER SYSTEM EQUIPPED WITH INDEPENDENT PROTECTION CIRCUIT ARCHITECTURE - The present invention includes plural power supplying units, a power distributing backplane and more than one protection circuits, wherein the power supplying unit produces an output power and the power distributing backplane integrates the output powers from plural power supplying units and distributes thereof into plural driving powers for supplying loads. The power circuit for the driving power to drive each load has a protection circuit mounted thereon, wherein the protection circuit detects a driving condition of the load or the power circuit, and according thereto, the protection circuit becomes open or close so as to disconnect or maintain the driving power. Therefore, the abnormal driving power will not influence the operation of the whole power system and other normal loads still can maintain operation. Furthermore, since plural power supplying units are used to provide the power needed by loads, the power capacity will not be wasted. | 08-20-2009 |
| 20090267417 | Multi-input power converter and uninterruptible power supply having the same - A multi-input power converter and an uninterruptible power supply (UPS) having the same, wherein the multi-input power converter has input connection means, inductor means, switch means, rectifier means, output storing means and switch control means. The inductor means is electrically connected to the input connection means. The switch means is electrically connected to the inductor means for conducting input currents. The switch control means is electrically connected to the switch means to control the inductor means charging the input currents and discharging the input currents to the output storing means to perform the DC to DC converting, AC to DC converting and power factor correction functions by controlling the switch means turning on and off. | 10-29-2009 |
| 20100001586 | Method and system for managing backup power - Typical battery backup solutions for network devices provide power for a limited range of services over a limited duration, and lack user serviceability. A configurable, redundant battery solution according to an example embodiment of the invention employs two or more battery backup units (BBUs) available to a device. The device and BBUs are responsive to respective configuration data directing usage of the BBUs and/or operation of the device. In the event of a power failure, the BBUs provide power to the device based on their respective configuration data. Through use of the at least one embodiment, an Optical Network Terminal (ONT) in a Passive Optical Network (PON) can be configured by a service provider to provide eight hours of emergency dial-out call service and configured by a user to provide other services, such as Internet Protocol Television (IPTV) and data services, in a customized manner during a backup power condition. | 01-07-2010 |
| 20100207452 | MOBILE HYBRID ELECTRICAL POWER SOURCE - The mobile hybrid electrical power source ( | 08-19-2010 |
| 20100225170 | METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line. | 09-09-2010 |
| 20100253147 | Parallel Power Back-Up System - System and methods of supplying power to a load are provided. A module monitors electrical grid power. When the grid power fails the module initially provides power from a performance battery. When a bulk energy power system has warmed-up/activated, the module switches the power to the load from the performance battery to the bulk energy power system. | 10-07-2010 |
| 20100259102 | PRODUCTION SYSTEM FOR ELECTRIC ENERGY AND HYDROGEN - System for producing electric energy and hydrogen based on renewable energy sources, such as wind energy from one or several wind turbines, and incorporating means for producing hydrogen. The system comprises a hybrid electrolyzer device, which comprises a combination of at least two different electrolysis technologies and at least one control device, which manages the hydrogen production between the two electrolyzers of the different electrolysis technologies; being at least one electrolyzer of a rapid dynamics electrolysis technology type and, at least the second one of a substantially slower dynamics electrolysis technology type. | 10-14-2010 |
| 20100289335 | ACTIVE BACK UP AUTO CHANGEOVER VOLTAGE BUS - Several methods and a system to implement an efficient power supply management are disclosed. In one embodiment, an apparatus of a voltage supply includes a power supply providing a voltage. The apparatus includes an active supply module communicating with a supply voltage to a voltage bus through an ORing element. The apparatus also includes a redundant supply module providing an additional voltage to the voltage bus if the active supply module fails, through an additional ORing element. The redundant supply module may be coupled with the power supply in parallel with the active supply module. Further, the apparatus includes an automatic changeover module detecting a failure of the active supply module disabling the active supply module and enabling the redundant supply module to supply the additional voltage supply to the voltage bus. Further, the apparatus also includes a voltage bus coupled with a load. | 11-18-2010 |
| 20100314944 | 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. | 12-16-2010 |
| 20110074216 | POWER SYSTEM FOR A DEVICE - A power system is designed for providing reliable electrical power to a facility and/or associated devices. The system includes one or more fuel cells and a circuit adapted to receive power from the one or more fuel cells. The circuit is electrically connected to a device receiving the electrical power from the system. Additionally, the system includes one or more capacitors included in the circuit, and being adapted for maintaining power in the circuit when the one or more fuel cells are temporarily unavailable. | 03-31-2011 |
| 20110115295 | ENERGY MANAGEMENT SYSTEM AND GRID-CONNECTED ENERGY STORAGE SYSTEM INCLUDING THE ENERGY MANAGEMENT SYSTEM - An energy management system includes: a first interface configured to receive a first power from a power generation system; a second interface configured to couple to the power generation system, a power grid, and a storage device, and to receive at least one of the first power from the power generation system, a second power from the power grid, or a third power from the storage device, and to supply a fourth power to at least one of the power grid or a load; and a third interface configured to receive the third power from the storage device, and to supply a fifth power to the storage device for storage. | 05-19-2011 |
| 20110133555 | ENERGY STORAGE SYSTEM - An energy storage system is disclosed. The system can supply DC power from a battery to a DC load or from the DC load to the battery without inverting an AC power to the DC power. | 06-09-2011 |
| 20110133556 | ENERGY STORAGE SYSTEM - An energy storage system capable of improving the lifespan of a battery pack while supplying power in a secured manner is provided. In one embodiment, the energy storage system includes a plurality of battery packs connected between a grid and a solar cell to charge/discharge power. The energy storage system includes an inverter connected among the grid, the solar cell, and the battery pack and inverting an alternating current (AC) power to a direct current (DC) power and vice versa according to charging/discharging operations. The energy storage system includes a converter connected to the solar cell, the battery pack, and the grid and converting power supplied from the solar cell, and a plurality of bidirectional converters connected to the plurality of battery packs, the solar cell, and the grid and connected in one-to-one correspondence to the plurality of battery packs and converting the power for charging/discharging the battery pack. The energy storage system further includes a controller connected to the inverter, the converter, and the plurality of bidirectional converters and applying drive signals to sequentially drive the plurality of bidirectional converters. | 06-09-2011 |
| 20110148204 | SELECTING A SINGLE AC SOURCE FOR A SWITCHING POWER SUPPLY - An apparatus, system, and method are disclosed for providing alternating current (“AC”) power redundancy in power supplies. A first input module is configured to receive a first AC power input waveform. A second input module is configured to receive a second AC power input waveform. A first switch and second switch are controlled by a switching logic module to select one of the AC power input waveforms for use by a power supply. If the first AC power input waveform is present, then it is selected for use. If both the first and second AC power input waveforms are present, then the first AC power input waveform is selected for use. If only the second AC power input waveform is present then it is selected for use. | 06-23-2011 |
| 20110148205 | POWER STORAGE SYSTEM AND METHOD OF CONTROLLING THE SAME - A power storage system and method of controlling the system is disclosed. The power storage system is connected to a power generation system and a grid. If a remaining amount of power of a battery is insufficient when the grid is in a quasi-normal state, the battery is charged by directly receiving electric power from the grid, and thus electric power is available for the if the grid subsequently goes back into the abnormal state. | 06-23-2011 |
| 20110187194 | EMERGENCY POWER SUPPLY SYSTEM COMPRISING A FUEL CELL - An emergency power supply system for a load connected to an AC grid (normal grid) includes a fuel cell for generating direct current, an inverter for providing alternating current, and a controller. The controller includes a synchronizing means which synchronizes the current provided by the inverter in phase with the current of the AC grid. The emergency power supply system hence is able to again provide the normal grid to the loads without further interruption. | 08-04-2011 |
| 20110215645 | CONTAINERIZED CONTINUOUS POWER SYSTEM AND METHOD - It is an object of this disclosure to provide an efficient continuous power system that may be deployed quickly and at low cost to a variety of destinations. The containerized nature of the presently disclosed system may allow these advantages to be attained. The disclosed system is particularly well suited for deployment in data center applications, but one of ordinary skill will recognize that it may be useful in a variety of situations. | 09-08-2011 |
| 20110278930 | SECONDARY BATTERY SYSTEM - There is provided a secondary battery system which converts direct current power supplied from secondary batteries into alternating current power by power converters, and supplies the converted power to an electric power system on a load side, the secondary battery system including a control apparatus that stops operating the operating the power converter and starts operating the stopped the power converter when a residual stored power level of the secondary battery corresponding to operating the power converter becomes to be not greater than a predetermined rate of a residual stored power level of the secondary battery corresponding to stopped the power converter. | 11-17-2011 |
| 20110285206 | POWER UNIT - A power unit is equipped with a power generator connected to an electric load, a first storage device connected to the electric load and the power generator, a second storage device connected to the electric load, the power generator, and the first storage device, and a charge control device that controls charge/discharge of the second storage device. The charge control device controls the discharge of the second storage device such that a power is supplied to the electric load and the first storage device when a predetermined condition corresponding to a high possibility of an increase in a power generation amount of the power generator is fulfilled, and controls the discharge of the second storage device such that a power is supplied to the electric load when the predetermined condition is not fulfilled. | 11-24-2011 |
| 20110291483 | ELECTRIC POWER SYSTEM - To provide an electric power system capable of adequately controlling the power flow in an AC switch ( | 12-01-2011 |
| 20120019071 | BACKUP POWER SYSTEM WITH FUEL CELL AND CONTROL METHOD THEREOF - A backup power system with a fuel cell and a control method thereof are provided. The control method includes the steps of: setting a default variation value; determining whether power interruption has happened to a grid power module; determining whether a load is functioning; performing a limiting step; and controlling the output of a fuel cell system. With the control method, the fuel cell system functions as a backup power system configured for grid power, and the fuel cell system generates power in response to variation of the load. | 01-26-2012 |
| 20120025614 | Uninterruptible Power Supply Apparatus and Methods Using Reconfigurable Energy Storage Networks - A power supply system includes an inverter circuit, for example, an inverter circuit of an uninterruptible power supply (UPS), having an output configured to be coupled to a load and an input configured to be coupled to a power source and a storage network configuration circuit configured to vary interconnections of a plurality of energy storage units of the power source, for example, plural ultracapacitors, responsive to a control input. The network configuration circuit may be operative to detect a state of the power source, such as a voltage produced thereby, and to modify parallel and serial coupling of the energy storage units responsive to the detected state. In some embodiments, the network configuration circuit may be operative to increase and/or decrease a number of the power source units connected in series across the input of the inverter circuit responsive to the detected state. | 02-02-2012 |
| 20120091811 | Uninterruptible Power Supply Systems and Methods for Communications Systems - An uninterruptible power supply for supply electrical power to a load, comprises a connection to a primary source for supplying primary power, a battery system for storing battery power, an inverter, and a controller. The controller controls the inverter to operate in a first mode, a second mode, and in a third mode. In the first mode, power is supplied to the primary load and the battery system based on primary power. In the second mode, power is supplied to the primary load based on battery power. In the third mode, power is supplied to the primary source based on battery power. | 04-19-2012 |
| 20120098344 | PHOTOVOLTAIC UNITS, METHODS OF OPERATING PHOTOVOLTAIC UNITS AND CONTROLLERS THEREFOR - The present invention relates to the field of photovoltaic systems with solar cell (s) or modules having insolation differences or mismatch. Each solar module is formed by placing a large number of solar cells in series. The PV system is then formed by placing a number of solar modules in series in a string and sometimes by placing multiple strings of series-connected solar modules in parallel, depending on the desired output voltage and power range of the PV system. In practical cases, differences will exist between output powers of the solar cells in the various modules, e.g. due to (part of) the modules being temporarily shaded, pollution on one or more solar cells, or even spread in solar-cell behaviour that may become worse during aging. Due to the current-source-type behaviour of solar cells and their series connection these differences will lead to a relatively large drop in output power coming from the PV system. This invention addresses this problem by adding DC-DC converters ( | 04-26-2012 |
| 20120112544 | Portable Power Devices and Methods of Supplying Power - A portable power supplying system includes an enclosure including at least one wheel mounted to a bottom portion of the enclosure, a battery secured within the enclosure, and a battery charger secured within the enclosure. The battery charger is electrically connected to the battery for charging the battery. The system further includes a DC/AC inverter secured within the enclosure. The DC/AC inverter is electrically connected to the battery, and is configured to convert a direct current supplied by the battery to an alternating current. The system further includes a power outlet including at least one female household electrical connection, and a transfer switch secured within the enclosure. The transfer switch is electrically connected to the DC/AC inverter, the battery charger, the power outlet and a power source input. | 05-10-2012 |
| 20120112545 | M2LC System Coupled to a Rectifier System - A system. The system is a modular multilevel converter system and includes a plurality of series connected modular multilevel converter cells. At least one of the modular multilevel converter cells is a three-level modular multilevel converter cell. The plurality of series connected modular multilevel converter cells are coupled to a rectifier system via a DC bus. | 05-10-2012 |
| 20120200161 | SYSTEM AND METHOD FOR PROVIDING REDUNDANT POWER TO A DEVICE - A system for providing redundant power to a device includes a first power supply unit that includes a first communication module including first and second first power supply unit transmitters and first and second first power supply unit receivers and a second power supply unit that includes a second communication module coupled to the first communication module and including first and second second power supply unit transmitters and first and second second power supply unit receivers coupled, respectively, to the first and second first power supply unit transmitters. The first power supply unit transmits on both the first and second first transmitters and the second power supply is configured to provide power to the device in the event that signals are not received from both the first and second first power supply unit transmitters by the first and second second power supply unit receivers. | 08-09-2012 |
| 20120212060 | DC PLANT FOR SELECTING AMONG MULTIPLE POWER SOURCES - Various embodiments of a DC plant. In one embodiment, the DC plant includes (1) power sources couplable to a common DC bus, (2) rectifiers and DC-DC converters associated with the power sources and (3) a DC plant controller. The DC plant controller includes a source identifier configured to identify the power sources, a source prioritizer coupled to the source identifier and configured to prioritize the power sources based on at least one criterion, and an output characteristic assigner coupled to the source prioritizer. | 08-23-2012 |
| 20120217810 | DC PLANT CONTROLLER AND METHOD FOR SELECTING AMONG MULTIPLE POWER SOURCES - Various embodiments of a DC plant controller and methods of selecting among multiple power sources. In one embodiment, the DC plant controller includes: (1) a source identifier configured to identify power sources couplable to a common DC bus, (2) a source prioritizer coupled to the source identifier and configured to prioritize the power sources based on at least one criterion, (3) an output characteristic assigner coupled to the source prioritizer and configured to place ones of the power sources on standby based on a calculated battery holdup time | 08-30-2012 |
| 20120242151 | DATA CENTER TOPOLOGY WITH LOW STS USE - Equipment in a data center may be wired in a topology in which each piece of equipment is served by one Static Transfer Switch (STS). Each group of equipment is assigned a main UPS and a reserve UPS, which may be connected to an underlying power source such as a utility. The main UPS and the reserve UPS are connected to the first and second inputs of an STS. For dual-corded equipment, the first cord is served by the output of the STS, while the second cord is served by the main UPS without an intervening STS. Thus, if the main UPS fails, the STS transfers power to the second UPS, thereby allowing the first cord to be powered. The second cord, not being served by the STS, simply loses power, thereby doubling the power draw at the first cord at roughly the same time that the transfer occurs. | 09-27-2012 |
| 20120261993 | Reverse Bias Protected Solar Array With Integrated Bypass Battery - A method for protecting the photovoltaic cells in a photovoltaic (PV) way from reverse bias damage by utilizing a rechargeable battery for bypassing current from a shaded photovoltaic cell or group of cells, avoiding the need for a bypass diode. Further, the method mitigates the voltage degradation of a PV array caused by shaded cells. | 10-18-2012 |
| 20120313437 | DATA CENTER BATTERY ENHANCEMENT METHOD AND SYSTEM - A method for increasing workable power output and run time duration of a battery backup system is disclosed. A plurality of battery groups is provided. A microprocessor electrically connects the power output of a first battery group and a second battery group to a UPS. The microprocessor monitors the output voltage of the first and second battery groups. When the monitored output voltage of the first and second battery group falls below a predetermined level, the microprocessor electrically disconnects from the UPS the first battery group and electrically connects to the UPS the power output of another of the plurality of battery groups. The first battery group is configured to be re-connectable to the UPS after a time period equal to or greater than necessary to permit the output voltage of the first battery group to recover to about its nominal voltage rating. | 12-13-2012 |
| 20120319486 | BATTERY BACKUP SYSTEM AND ASSOCIATED METHOD - The invention is related to a battery backup system comprising a power cell array, a controller, and a power inverter. The power cell array may include power cells and a charger to provide electrical power to the power cells. The power cells may include a battery for storing and discharging electrical power, a control input, and a feedback output connected to the controller. The controller may control the operational state of the power cells between a charge state and a power state. The controller may also include a feedback input, and a control output connected to the power cells. The power inverter may convert electrical power discharged from the power cell array to drive the charger and a load. | 12-20-2012 |
| 20130002026 | ENERGY STORAGE APPARATUS AND ENERGY STORAGE SYSTEM - According to one embodiment, an energy storage apparatus includes a DC/DC convertor including a discharge terminal and a charge terminal, the DC/DC convertor which sets up a voltage of a DC power supplied from the discharge terminal and outputs the DC power from the charge terminal, switches which switch connections between a rechargeable batteries and a first connection terminal electrically connected to an external device, a second connection terminal electrically connected to the discharge terminal, and a third connection terminal electrically connected to the charge terminal, and a controller which controls the DC/DC convertor to perform charge and discharge between a rechargeable battery connected to the discharge terminal via the switches and a rechargeable battery connected to the charge terminal via the switches, | 01-03-2013 |
| 20130009481 | Integrated Fuel Cell System with Auxiliary Power Delivery - A method of providing electrical power using a split bus configuration includes receiving a first direct current at a positive bus of a split bus, where the first direct current originates from a first fuel cell segment. A second direct current is received at a negative bus of the split bus, where the second direct current originates from a second fuel cell segment. A third direct current is also received at the split bus such that a combined direct current is formed including the first direct current, the second direct current, and the third direct current. The third direct current originates from an alternative direct current (DC) source. The combined direct current is provided to an inverter such that an alternating current is generated for a load. | 01-10-2013 |
| 20130020873 | Uninterruptible Power Supplies, Solar Power Kits For Uninterruptible Power Supplies and Related Methods - Uninterruptible power supplies, solar power kits for uninterruptible power supplies and related methods are described. According to one aspect, an uninterruptible power supply includes a power bus, mains circuitry configured to rectify electrical energy received from a mains supply system into rectified electrical energy and to provide the rectified electrical energy to a power bus of the uninterruptible power supply, photovoltaic circuitry configured to convert solar energy into converted electrical energy and to provide the converted electrical energy to the power bus, a battery system configured to receive electrical energy from the power bus to charge a battery of the battery system and to discharge electrical energy to the power bus, an inverter configured to provide electrical energy from the power bus to the load, and a controller configured to monitor the photovoltaic circuitry and to implement at least one operation of the uninterruptible power supply using the monitoring. | 01-24-2013 |
| 20130043729 | UNINTERRUPTIBLE POWER-SUPPLY APPARATUS AND METHOD OF USING THE SAME - An uninterruptible power-supply apparatus has a storage battery including a first electrode and a second electrode, an output cable configured to output a discharge current of the storage battery to an external power line to be a backup target, and a first connection portion configured to externally take out a voltage of the first electrode. | 02-21-2013 |
| 20130049471 | Multipurpose, universal Converter with battery control and real-time Power Factor Correction. - The Electric Power Converter has the qualifications for an uninterruptable power supply, battery management, energy conversion, micro-grid formation, Power Factor Correction including Total Harmonic Distortion correction in real time. Uninterruptable power supply's use is for always-on, real-time, all-time, reduced distortion with functions of load reduction and management during peak load events. The Electric Power Converter as well has the ability to provide maintenance for most types of batteries including charging and discharge regiments to increase the overall lifetime of a battery, the maintenance, incorporating restorative functions that can refurbish dead batteries or can further increase the overall efficiency and useful function of weaker/aged/defective batteries. Energy conversion capabilities allow for the conversion of AC or DC to AC or DC with high efficiency and ability to actively vary the frequency in accordance to the required parameters. The Electric Power Converter is able to establish and sustain a micro-grid with multiple and varying sources of power generation and load conditions. The Electric Power Converter is achieving dynamic, real-time, interactive Power Factor Correction (PFC) function with advanced voltage harmonic distortion correction with a high efficiency ratio. The Electric Power converter is designed to function with the emerging Smart Grid technologies and provide an overall higher level of operating efficiency and higher quality of electrical power. | 02-28-2013 |
| 20130049472 | Energy Storage Device For A Power Compensator And A Method For Control Thereof - An energy storage device for a power compensator including a battery stack including a plurality of battery units connected in series, each of the battery units including one or more parallel-connected battery modules including a plurality of battery cells, where each battery unit further includes a bypass switch connected in parallel with the battery modules and the energy storage device comprises a control unit which is operatively connected to the bypass switches and adapted to receive information on a failure in any of the battery modules and to close the bypass switch in order to bypass the battery unit in case of a failure in any of the battery modules of the battery unit. | 02-28-2013 |
| 20130069433 | CELL SITE POWER SYSTEM MANAGEMENT, INCLUDING BATTERY CIRCUIT MANAGEMENT - Systems, apparatuses, and methods for managing battery circuits in systems such as wireless communications service base stations are disclosed. An example apparatus includes a battery circuit having multiple strings of one or more serially connected batteries. The apparatus may be configured to rotate between battery strings such that one or more strings are maintained at or near an upper threshold while other string(s) are disconnected from the maintained string(s). The apparatus may also be configured to charge the battery circuit, to test the battery circuit, and to handle power failures. | 03-21-2013 |
| 20130093245 | METHOD TO MAINTAIN POWER SUPPLY VOLTAGE DURING BROWNOUT - A method of maintaining a power supply voltage during a brownout is disclosed. The method includes the step of storing a charge in a charge reservoir ( | 04-18-2013 |
| 20130154376 | UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (UPS) includes a rectifier, a converter, a first auxiliary power source, and a power distribution unit (PDU). The rectifier receives an alternating current (AC) voltage from an AC power source and converts this to a rectified direct current (DC) voltage which is outputted to the converter. The converter converts the rectified DC voltage to a working voltage and outputs the working voltage to a power supply unit (PSU) through the PDU. The first auxiliary power source outputs a DC voltage to the PSU through the PDU when the AC power source is down. | 06-20-2013 |
| 20130154377 | UNINTERRUPTIBLE POWER SYSTEM, METHOD OF CONTROLLING POWER SUPPLY, AND RECORDING MEDIUM HAVING POWER SUPPLY CONTROL PROGRAM STORED THEREIN - An uninterruptible power system includes a plurality of uninterruptible power units connected in parallel to input power. One uninterruptible power unit includes a rechargeable battery, a charging circuit that supplies a charging current to the rechargeable battery, and an output circuit that outputs power supplied from the rechargeable battery as output power. The uninterruptible power system includes a path switching unit in which switching of a path for power received among the charging circuit, the rechargeable battery and the output circuit in the plurality of uninterruptible power units is performed, and a control unit that controls the path switching unit so that switching of the path is performed according to states of the uninterruptible power units. | 06-20-2013 |
| 20130169050 | POWER SUPPLY SYSTEM OF WIRELESS COMMUNICATION DEVICE - A power supply system of a wireless communication device includes a switch, a charging integrated circuit, a solar charging module, a rechargeable battery, and a microprocessor. The switch is electrically connected to the charging integrated circuit when the voltage provided by the solar charging module is higher than or equal to a predetermined value, and at the same time, the solar charging module provides a voltage for the wireless communication device through the charging integrated circuit. The microprocessor is operable to determine whether the voltage provided by the external power source or the PoE is higher than the voltage provided by the rechargeable battery for use in deciding which one of the external power source, the PoE, and the rechargeable battery provides a voltage for the wireless communication device. | 07-04-2013 |
| 20130181528 | REDUNDANT CONTROL SYSTEMS, METHODS, AND DEVICES FOR PARALLEL INVERTER INSTALLATIONS - Systems, methods, and devices are provided for redundant control of parallel inverter installations. In one example, a parallel uninterruptible power supply (UPS) system may include several inverter feed paths and several UPS controllers. The inverter feed paths may supply double-conversion power to a load. The UPS controllers may be communicatively coupled to one another via at least two redundant data busses. The UPS controllers may operate in conjunction with one another to control the plurality of feed paths. | 07-18-2013 |
| 20130187468 | UNINTERRUPTIBLE POWER SUPPLY CONTROL IN DISTRIBUTED POWER ARCHITECTURE - Aspects of the disclosure relate generally to uninterruptible power supply (“UPS”) units for systems requiring back up power. The UPS units include driving circuitry for controlling charging and allowing discharging of a battery. The driving circuitry includes a controller as well as a pair of switches. The MOSFETs includes a charging and a discharging MOSFET in series with the battery operating as a bidirectional switch. When the UPS unit is connected to an AC power supply, the controller regulates the current through the charging MOSFET switch based on feedback from a feedback device in order to charge the battery. If AC power is lost, the controller goes into saturation, switching the discharging MOSFET to a on condition and allowing the battery to discharge. The transitions from AC to battery power and vice versa are automatically achieved via the controller. | 07-25-2013 |
| 20130193763 | INTRINSICALLY SAFE BACKUP POWER SUPPLY FOR COMBUSTIBLE ENVIRONMENTS - An intrinsically safe supply for supplying back-up power during a power-out event incorporates one or more rechargeable fuel cells. The power supply is provided with switching circuitry operable to provide an output back-up current from the fuel cells upon a power-out event. The fuel cells are housed within a sealed metal housing immersed within an electricity insulating potting material chosen to arrest spark formation and/or electrically insulate any created sparks. The fuel cells comprise sealed lithium iron based fuel cells for supplying back-up electrical current. A charging circuit electrically connects the fuel cells with an external power source for providing a charging current during normal power-on conditions. | 08-01-2013 |
| 20130207473 | Method, system and apparatus for redirecting use of any inverter or uninterruptable power supply with improved solar power management - Method, apparatus and system for converting or redirecting use of any inverter or uninterruptable power supply (UPS) with the help of the proposed Solar Management Unit (SMU) into a standalone or off-grid solar system of equivalent capacity solar power. The SMU simplifies the system design to utilize existing investment in an inverter and other equipment and reduces solar system installation time. | 08-15-2013 |
| 20130221750 | ACTIVE BACK UP AUTO CHANGEOVER VOLTAGE BUS - Several methods and a system to implement an efficient power supply management are disclosed. In one embodiment, an apparatus of a voltage supply includes a power supply providing a voltage. The apparatus includes an active supply module communicating with a supply voltage to a voltage bus through an ORing element. The apparatus also includes a redundant supply module providing an additional voltage to the voltage bus if the active supply module fails, through an additional ORing element. The redundant supply module may be coupled with the power supply in parallel with the active supply module. Further, the apparatus includes an automatic changeover module detecting a failure of the active supply module disabling the active supply module and enabling the redundant supply module to supply the additional voltage supply to the voltage bus. Further, the apparatus also includes a voltage bus coupled with a load. | 08-29-2013 |
| 20130234520 | MODULAR ENERGY PORTAL WITH AC ARCHITECTURE FOR HARVESTING ENERGY FROM ELECTRICAL POWER SOURCES - A modular energy harvesting portal including a housing with a bay, a plurality of inverters, a controller, and an AC bus. A first inverter has a first DC input, a first AC output, and a first power rating. The first inverter converts DC power to AC power and outputs the AC power to an AC bus. A second inverter has a second DC input, a second AC output, and a second power rating. The second inverter converts DC power to AC power and outputs the AC power to the AC bus. The inverters are positioned in the bay. The controller selectively controls a switch to couple the AC bus to an AC grid. The modular energy harvesting portal system has a power rating dependent on the number of inverters and the power rating of each of the inverters. | 09-12-2013 |
| 20130257159 | METHOD AND SYSTEM FOR FAST SWITCHING BACKUP POWER SUPPLY IN MULTIPLE POWER SOURCE - A method and a system provide fast switching between multiple backup power supplies. The method includes building, on the basis of the changing characteristics of the amplitude difference and phase angle difference of a bus voltage, an acceleration model for the changing speed thereof. An optimum backup power supply is selected from the multiple backup power supplies by way of forecasting the changed value thereof. A load on the bus is switched to the optimum backup power supply. The system contains a detecting module, a calculating module, a comparison module, a backup power supply determining module, and a switching module. The method and system are able to ensure the reliable and optimized fast switching of the load on a bus. | 10-03-2013 |
| 20130264878 | POWER INTERRUPTION BRIDGE CIRCUIT - A controller is employed in conjunction with an electrical power distribution system (EPDS). The controller includes at least a first input for receiving DC power from a DC power bus and a power supply circuit connected to the first input to provide operational power to the controller. The controller further includes a power interrupt bridge circuit that monitors the voltage provided of the first input. In response to the monitored voltage being less than a threshold value, the power interrupt bridge circuit supplies power to the power supply circuit from a DC emergency source for a defined time period. | 10-10-2013 |
| 20130270911 | POWER CONTROLLER - Residential system includes photovoltaic power system including solar battery, and electrical storage device including battery. Electric load of residential system is selectively supplied with energy from power supply system, power generator and electrical storage device. Power generator allows energy to flow back to power supply system. Energy surplus judgment part calculates difference between generating energy of power generator and demand power for electric load (excess generating energy). Overall operation controller applies stored energy in electrical storage device to demand energy for electric load when excess generating energy is produced, and charges electrical storage device without applying generating energy of power generator to demand energy when excess generating energy is not produced. | 10-17-2013 |
| 20130285454 | SOLAR POWER SYSTEM - A solar power system includes a solar panel for converting solar power into direct current power. The solar power system further includes an electric power detecting device, an elevator mechanism, an electric current control unit and a fixing mechanism. The elevator mechanism mechanically pulls a weight under a direct current motor and drives the direct current motor to rotate to generate electric power when the weigh falls. The electric current control unit outputs the direct current power to the direct current motor when the direct current power is equal to a predetermined value and stops outputting the direct current power when the weight is pulled to a predetermined. The fixing mechanism keeps the weight staying at the predetermined height and enables the weight to fall so that the elevator mechanism driving the direct current motor to rotate to generate electric power. | 10-31-2013 |
| 20130293017 | ENVIRONMENTAL SYSTEM AND MODULAR POWER SKID FOR A FACILITY - A set of two or more modular-critical-power-distribution skids are arranged in a redundant power center configuration to supply power to electrical loads in a modular data center facility. The skids are housed in hardened buildings. The uninterruptable power supply is electrically and mechanically connected into the multiple power distribution cabinets, all of which are mounted onto a steel framed support structure, which supports a weight of those uninterruptable power supplies and power distribution cabinets. The environmental control system controls a cooling system for the modular-critical-power-distribution skids. Electrical power from the A-side and B-side connects in a redundant power configuration to electrical loads in the cooling system. | 11-07-2013 |
| 20140054964 | UPS SYSTEMS WITH MODULAR BLOCK ARCHITECTURES - A UPS system includes a power distribution assembly having a plurality of side faces and comprising an AC input and an AC output and at least two UPS assemblies having respective side faces confronting respective ones of the side faces of the power distribution assembly, each of the at least two UPS assemblies comprising a plurality of converter modules and an interconnection module configured to switchably couple AC inputs and AC outputs of the converter modules to respective ones of the AC input and the AC output of the power distribution assembly through conductors passing through the confronting side faces. The conductors may couple the power distribution assembly to the at least two UPS modules without the use of conduit and/or cable trays. | 02-27-2014 |
| 20140054965 | SYSTEM AND METHOD FOR EFFICIENT POWER DISTRIBUTION AND BACKUP - A system and method of power distribution and backup is provided. The power backup system includes a first uninterruptible power supply and a second uninterruptible power supply configured to drive a load in parallel. The first uninterruptible power supply and the second uninterruptible power supply are both connected through a direct connection to at least two power sources. | 02-27-2014 |
| 20140054966 | SYSTEM AND METHOD FOR EFFICIENT POWER DISTRIBUTION AND BACKUP - A system and method of power distribution and backup is provided. The power backup system includes a first uninterruptible power supply and a second uninterruptible power supply configured to drive a load in parallel. The first uninterruptible power supply and the second uninterruptible power supply are both connected through a direct connection or through at least two switches to at least two power sources. | 02-27-2014 |
| 20140054967 | UNINTERRUPTIBLE POWER SUPPLY SYSTEM - An uninterruptible power supply system, including: a plurality of uninterruptible power supply devices which are connected in parallel with respect to a load, and switch between power supplies supplying power to the load depending on states of the power supplies; a control unit controlling an operation of switching between the power supplies by the uninterruptible power supply devices; and a storage battery connected to the plurality of uninterruptible power supply devices in common. The uninterruptible power supply device has a converter converting AC power of an AC power supply into DC power, a contactor switching between the DC power converted by the converter and DC power input from the storage battery, and an inverter inverting the DC power into AC power and supplying the power to the load. The control unit deactivates the converter which does not contribute to supplying a power amount required for the load, of a plurality of converters. | 02-27-2014 |
| 20140103726 | Controlling Power Conversion Systems - Methods and systems for controlling power conversion systems. In one aspect, a power management system includes a first power conversion system coupled to a first energy source and a second power conversion system coupled to a second energy source, and a control system. The control system causes, while the first power conversion system is operating in an active mode and the second power conversion system is operating in a standby mode, the second power conversion system to exit the standby mode, the second power conversion system providing a reactive power flow upon exiting the standby mode. The control system causes the first power conversion system to provide a compensatory reactive power flow to compensate for at least a portion of the reactive power flow from the second power conversion system. | 04-17-2014 |
| 20140159493 | MULTIPLE UPS SYSTEM HAVING MULTI-WAY POWER TIE SYSTEM AND INTELLIGENT POWER SHARING CONTROL - A multiple UPS system includes a plurality of multi-module UPS subsystems coupled to a power tie cabinet, each multi-module UPS subsystem having a plurality of UPS modules. The power tie cabinet includes one or more controllers, collectively referred to as PTC (power tie cabinet) controls. The PTC controls periodically determine a power error message for each of the multi-module UPS subsystems and pass it to the respective multi-module UPS subsystem. A controller of the multi-module UPS subsystem uses the power error message to determine error data that is provided to a power average control loop used in control of power sharing among the UPS modules of the multi-module UPS subsystem. | 06-12-2014 |
| 20140232194 | POWER SUPPLY SYSTEM AND METHOD OF CONTROLLING THE SAME - A power supply system including: a power storage device which is connected to a system power supply and is chargeable and dischargeable; a second load which is connected in parallel to the power storage device; a power generation device which is connected to the second load, generates power, supplies the generated power to the second load, and performs a shutdown process for stopping power generation using power supplied from the power storage device; and a determination device which determines whether or not a remaining amount of power in the power storage device is greater than a shutdown power amount which is an amount of power necessary for the power generation device to perform the shutdown process, in which the power generation device performs, while in operation, the shutdown process or supplying of power to the power storage device according to the determination by the determination device. | 08-21-2014 |
| 20140312698 | UNIT HAVING A SWITCHING FUNCTION FOR ETHERNET - An arrangement for a switching function unit for Ethernet having a number of active components of the Ethernet which are combined by a switching function unit to form a functional unit; and at least three mutually independent power supplies for supplying power to the active components, wherein a first of the at least three power supplies is a local power supply for the switching function unit, a second of the at least three power supplies is a first extraneous power supply via Ethernet for the switching function unit, and a third of the at least three power supplies is a second extraneous power supply via Ethernet for the switching function unit. | 10-23-2014 |
| 20140346882 | POWER SUPPLY DEVICE AND POWER SUPPLY SWITCHING METHOD - A power supply device ( | 11-27-2014 |
| 20140361624 | APPARATUS AND METHODS FOR CONTROL OF LOAD POWER QUALITY IN UNINTERRUPTIBLE POWER SYSTEMS - Systems and methods for supplying power to a load include a static switch between a primary power source and a power conditioner associated with a secondary power source, and maintenance switches between the primary and secondary power sources and a load. A controller is operable to actuate the switches. The static switch is operable to conduct power from the primary power source to a capacitor associated with the power conditioner. Current supplied from the primary power source includes portions at a fundamental frequency and a harmonic frequency. The secondary power source or the capacitor, or both, can be used to supply reactive power having a current equal and opposite that of the harmonic portion such that substantially all of the current provided to the load by the primary power source is at the fundamental frequency. | 12-11-2014 |
| 20150008746 | HIGHLY EFFICIENT POWER SUPPLY UNIT AND METHOD FOR SUPPLYING POWER USING SAME - A more efficient power supply unit and a method for supplying power using same are disclosed. The power supply unit comprises a relay for switching alternating current power supplied from a plurality of sources; a direct current power supply for converting the switched current power to direct current power; and a controller for generating a switch signal to control the relay to switch the sources on the basis of the result for monitoring the alternating current power supplied from the sources. | 01-08-2015 |
| 20150015074 | POWER SUPPLY DEVICE AND POWER MANAGEMENT METHOD - A method for managing a number of power supply units (PSUs) of a power supply device is provided. A total operation time of each PSU is counted. A number of the PSUs to be assigned to work is determined according to a load value of a load connected to the power supply device. Which of the PSUs will be assigned to work and which of the PSUs will be assigned to idle are determined according to the total operation time of each PSU and the determined number of the PSUs to be assigned to work. The PSUs to be assigned to work are controlled to enter a work state, and the PSUs to be assigned to idle are controlled to enter a standby mode. | 01-15-2015 |
| 20150022001 | MODULAR GRID POWER BACKUP SYSTEM - A modular power backup system has a plurality of smart battery packs for storing electrical energy. Each of the plurality of smart battery packs includes a first power and control connector. A battery pack rack defines a plurality of slots for holding the plurality of smart battery packs. Each of the plurality of slots includes a second power and control connector for interconnecting with the first power and control connector of a smart battery pack of the plurality of smart battery packs. First control circuitry associated with the at least one battery pack rack selectively pools electrical energy from the plurality of smart battery packs into one or more electrical energy outputs. | 01-22-2015 |
| 20150022002 | METHOD AND APPARATUS OF MASTER SELECTION LOGIC IN UPS PARALLEL SYSTEM - According to one aspect, embodiments of the invention provide a method of operating a UPS system having a plurality of UPS's, the method comprising powering on the UPS system, assigning each one of the plurality of UPS's a unique identifier, calculating a master priority index for each one of the plurality of UPS's based on the unique identifier of each one of the plurality of UPS's, and based on the master priority index of each one of the plurality of UPS's, configuring each one of the plurality of UPS's to operate in one of a master mode of operation and a controlled mode of operation. | 01-22-2015 |
| 20150022003 | MODULAR THREE PHASE ON-LINE UPS - An uninterruptible power supply system (UPS) includes an interconnect circuit configured to receive three-phase AC input power from an AC power source and a plurality of UPS subsystems each coupled to the interconnect circuit. A first UPS subsystem includes first and second single-phase AC-to-DC converters. At least one second UPS subsystem includes third and fourth single-phase AC-to-DC converters. In a first mode of operation, the interconnect circuit is configured to conduct at least one phase of the AC input power to the first UPS subsystem and at least one phase of the AC input power to the second UPS subsystem, and, in a second mode of operation, to disconnect the AC input power from the first UPS subsystem and to conduct at least one phase of the AC input power to the second UPS subsystem. | 01-22-2015 |
| 20150048684 | SECURE POWER SUPPLY FOR AN INDUSTRIAL CONTROL SYSTEM - A control system includes an electrical power source and an alternating current (AC) power supply electrically coupled with the electrical power source. An uninterruptable power supply is electrically coupled with the AC power supply for storing and returning electrical energy supplied by the AC power supply. The uninterruptable power supply includes multiple battery modules. Each battery module includes a battery cell and a battery monitor configured to monitor the battery cell. Each battery module also includes a controller operatively coupled with the battery modules. The controller is configured to receive diagnostic information from the battery modules. The uninterruptable power supply can also include one or more authentication modules to participate in an authentication sequence between two or more of a battery module, the controller, a device to be coupled with the uninterruptable power supply, an action originator in the control system, and so forth. | 02-19-2015 |
| 20150102677 | 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. | 04-16-2015 |
| 20150115720 | BACKUP BATTERY SYSTEMS FOR TRAFFIC CABINETS - Backup battery systems for traffic cabinets that control traffic lights are provided herein. Backup battery systems include a controller operably coupled to 1 or more backup battery panels having rechargeable battery cells. Preferred systems can fit and operate entirely within the traffic cabinet. Monitoring and control of the backup system can be operable locally and remotely via internet cloud. | 04-30-2015 |
| 20150130280 | VARIABLE NEUTRAL IMPEDANCE FOR MULTI-SOURCE SYSTEM - A system includes a first power source and a variable neutral impedance circuit configured to vary a neutral impedance of the first power source based on presence and absence of a parallel coupling of the first power source with a second power source. The variable neutral impedance circuit may be configured to reduce a neutral current of the first power source when the first power source is operating in parallel with the second power source. The variable neutral impedance circuit may include an impedance coupled in series with the first power source, a bypass switch configured to bypass the impedance and a control circuit configured to control the bypass switch. The impedance may include a resistor. | 05-14-2015 |
| 20150137604 | METHOD TO SELECT OPTIMAL SYNCHRONIZATION SOURCE IN A MULTIPLE UNINTERRUPTIBLE POWER SUPPLY SYSTEM - A multiple uninterruptible power supply system includes at least two uninterruptible power supply modules. Each uninterruptible power supply module has a control unit with the control unit coupled to a synchronization bus. The uninterruptible power supply module are synchronized to each other with one of the uninterruptible power supply modules being operated as a sync master UPS and its control unit sending synchronization signals on the synchronization bus that are received on the synchronization bus by control units of each of the other uninterruptible power supply module which are each operated as a slave UPS synchronized to the sync master UPS. When a bypass power source for the uninterruptible power supply module that is being operated as the sync master becomes unqualified, another one of the UPS modules is operated as the sync master and its control unit then sends out the synchronization signals. | 05-21-2015 |
| 20150311749 | Redundant Generator Control - A generator system may include redundant control. The generator system may include any combination of redundant controllers, redundant communication paths, or other redundant control. A generator system may include an electrical bus, a first generator controller, and the second generator controller. The first generator controller may control a first generator breaker for connecting a first generator to the electrical bus and configured to control an external breaker for selectively connecting the electrical bus to an external source. The second generator controller may control a second generator breaker for connecting a second generator to the common bus and configured to control the external breaker for selectively connecting the electrical bus to the external source. | 10-29-2015 |
| 20150311751 | ENERGY STORAGE MODULE WITH DC VOLTAGE INTERMEDIATE CIRCUIT - An energy storage module is provided for reversibly storing electrical energy in the form of mechanical rotation energy. The energy storage module comprises a plurality of flywheel storage units, at least one control system and at least one module control unit, wherein the flywheel storage units are connected electrically in parallel by means of a common DC voltage intermediate circuit, and the control system or systems is/are connected to the common DC voltage intermediate circuit by way of the respective output side and to at least one external voltage grid by way of the respective input side, wherein the module control unit is provided for transmitting suitable prespecified torques to the flywheel storage units for emitting or absorbing energy to/from the DC voltage intermediate circuit, and at least one of the control systems is designed to control the DC voltage in the DC voltage intermediate circuit. | 10-29-2015 |
| 20150364951 | SOLAR NUCLEAR FUSION DEVELOPMENT - Systems and methods for providing a solar photovoltaic (PV) facility as a source of secondary power for a nuclear power facility in the event of a power failure at the nuclear power facility. The solar PV facility is operably connected to the nuclear power facility by, e.g., a direct connection or through a substation. When a power failure at the nuclear power facility is detected, a switching system connects the solar PV facility to the nuclear power facility to provide a source of backup power to emergency systems. Power may be applied directly to such systems or to batteries at the nuclear power facility. In some implementations, the solar PV facility is physically located proximate to the nuclear power facility. | 12-17-2015 |
| 20150372537 | SYSTEMS AND METHODS FOR PREVENTING ELECTRIC POWER CONVERTERS FROM OPERATING IN SLEEP MODE - A system for providing power to a load includes an output converter configured to provide power to a load, at least one battery coupled to the output converter, an input converter coupled to the at least one battery and the output converter, and a control circuit coupled to the input converter. The input converter is configured to provide an output voltage and an output current to the at least one battery and the output converter. The control circuit is configured to regulate the output voltage of the input converter at a defined voltage level to prevent the output converter from operating in a sleep mode. Other example systems, control circuits etc. are also disclosed. | 12-24-2015 |
| 20160006242 | POWER SOURCE SYSTEM - A power source system for supplying DC (direct current) power to a load, including first and second power source apparatuses and a control apparatus. The first power source apparatus is connected to an alternating current (AC) power source, and configured to convert AC power received from the AC power source to first DC power. The second power source apparatus is connected to a battery, and configured to convert power of the battery to second DC power. The control apparatus is connected to the first and second power source apparatuses, and configured to so control the first and second power source apparatuses that the DC power supplied to the load is the first DC power in a normal mode, the second DC power in a back-up mode, and a combination of the first and second DC power in an assist mode. | 01-07-2016 |
| 20160020645 | Nested Redundant Uninterruptible Power Supply Apparatus and Methods - An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided. | 01-21-2016 |
| 20160020646 | SYSTEMS AND METHODS FOR MANAGING POWER BACKFEED IN UNINTERRUPTIBLE POWER SUPPLY SYSTEMS - A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, and at least one controller communicatively coupled to the plurality of UPSs, the at least one controller configured to calculate an output voltage frequency for each UPS of the plurality of UPSs, wherein the output voltage frequency for a UPS of the plurality of UPSs is calculated based at least on a derivative of an average active output power of the UPS, and control operation of each UPS based on the respective calculated output voltage frequencies. | 01-21-2016 |
| 20160028236 | SYSTEMS AND METHODS FOR GENERATING ENERGY USING A HYDROGEN CYCLE - Systems and methods for continuously generating electric power using a renewable energy power source to continuously generate electrical energy are disclosed. An illustrative embodiment includes transmitting electrical power from the renewable energy power source to an electrolyzer to produce hydrogen gas, storing the hydrogen gas in a storage facility until production of power from the renewable energy power source drops below a predetermined threshold, and activating a secondary power generation system that converts the stored hydrogen to electrical energy. The stored hydrogen may be converted to electrical energy using a gas turbine generator or a fuel cell. The system further includes a reverse osmosis subsystem for purifying water for use in the electrolyzer and optional systems for providing the purified water to a community and for using the produced electricity to treat waste water to generate treated water that may be purified and supplied to the electrolyzer. | 01-28-2016 |
| 20160036269 | ELECTRIC POWER CONVERTER HAVING THE FUNCTION OF SWITCHING POWER SUPPLY SYSTEMS IN THE EVENT OF POWER FAILURE - An electric power converter includes a power failure detection circuit for detecting a power failure state of each power supply system, a first switch having contact points connected to the power supply systems and one output terminal and, when the power failure detection circuit detects a power failure in at least one power supply system, switches to connect to the output terminal of the contact point connected to one of the other power supply systems, a second switch having a charging circuit to inhibit an inrush current from the power supply systems and one input terminal connected to the output terminal of the first switch and switches to connect the input terminal to a contact point on an input side of the charging circuit for a predetermined duration in synchronization with the switching among the power supply systems by the first switch unit, and an electric power conversion circuit. | 02-04-2016 |
| 20160105057 | REDUNDANT POWER SUPPLY SYSTEM PROVIDING ALTERNATE STANDBY - A redundant power supply system providing alternate standby includes at least one primary power supply, at least one secondary power supply and a power integration panel. Each primary power supply receives a first power ON/OFF signal and starts to output a primary duty power. Each secondary power supply receives a second power ON/OFF signal and starts to output a secondary duty power. The power integration panel is electrically connected to the primary power supply and the secondary power supply and has a standby mode to receive a power ON/OFF signal from a motherboard and output alternately at a selected time interval the first power ON/OFF signal to the primary power supply or the second power ON/OFF signal to the secondary power supply to make the primary power supply and the secondary power supply on standby alternately. | 04-14-2016 |
| 20160118847 | PROTECTION METHODS AND SWITCHES IN UNINTERRUPTIBLE POWER SUPPLY SYSTEMS - A system is provided. The system includes a plurality of uninterruptible power supplies (UPSs), a ring bus, a plurality of chokes, each choke of the plurality of chokes electrically coupling an associated UPS of the plurality of UPSs to the ring bus, and at least one switch electrically coupled between at least one UPS of the plurality of UPSs and the ring bus, the at least one switch having an opening time of less than 10 milliseconds. | 04-28-2016 |
| 20160172902 | Portable Switching Power Supply With Attachable Battery Pack and Enclosure | 06-16-2016 |
| 20160190865 | SWITCHABLE UNINTERRUPTIBLE POWER SUPPLY SYSTEM AND BATTERY CHARGING METHOD THEREOF - A switchable uninterruptible power supply (SUPS) system is provided. The system includes a UPS configured to supply power to a load, a plurality of battery units connected in parallel, and a controller configured to selectively supply power from a grid to the UPS and to selectively connect each of the plurality of battery units the UPS or a battery charger are connected to the grid. | 06-30-2016 |
| 20160380477 | ALTERNATING CURRENT UNINTERRUPTIBLE POWER SUPPLY SYSTEM - An alternating current uninterruptible power supply system includes a first power feed line, a second power feed line, a switchover relay, a converter, a power switch, a fuel cell, a system control board, a battery, and an inverter. If it is determined that electric power supply from a commercial alternating current power source has stopped for a first time or longer, a system control part of the system control board switches the switchover relay from a first state to a second state. Then, on the basis of the state of the electric power of the first power feed line, the system control part determines whether or not stopping of the electric power supply from the commercial alternating current power source has continued for a second time or longer. After that, if it is determined that the stopping of the electric power supply from the commercial alternating current power source has continued for the second time or longer, the system control part starts power generation of the stack. | 12-29-2016 |
