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| Number | Title | Issue Date |
| 8164220 | Apparatus, system and method for a UPS According to one aspect of the invention, a UPS includes an input configured to be coupled to an AC power source, a DC power source, an output configured to receive power from at least one of the AC power source and the DC power source, a first switched receptacle o... | 04/24/2012 |
| 8138630 | Solar powered system with grid backup A system includes a solar power subsystem that receives power from one or more solar power arrays. A storage control subsystem is coupled to the solar power subsystem to charge a battery from the power received by the solar power subsystem. A grid power control subs... | 03/20/2012 |
| 8076799 | 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 contr... | 12/13/2011 |
| 8039990 | DC UPS configured as intrinsic power transfer switch Methods of manufacturing a direct current (DC) uninterruptible power supply (UPS) configured as an intrinsic power transfer switch are provided. One method includes providing multiple inputs, multiple rectifiers coupled to the inputs, a common node coupled to the re... | 10/18/2011 |
| 8035250 | System and method for load sharing in multi-module power supply systems A load sharing, multi-module power supply system for supplying power to a load. The system may involve: a first power supply module having a controller, and having a first per unit capacity (pu-c); a second power supply module having a controller, and having a secon... | 10/11/2011 |
| 7939967 | Multiple power supply control Apparatus and methods are provided. A system includes two or more power supplies receiving electrical energy from respective independent sources. One of the power supplies detects an anomalous condition of the associated energy source and provides an alert signal. A... | 05/10/2011 |
| 7911084 | Parasitic power supply for traffic control systems A parasitic power supply provides for drawing power for an auxiliary device from a set of sequentially driven loads. A typical source of power is a traffic signal wherein the power may be sequentially applied to red, green and yellow lamps. The design provides isola... | 03/22/2011 |
| 7898109 | Switching power supply controller with built-in supply switching The invention provides a switching converter comprising as few as two high-side switching transistors and a low-side rectifying device, along with a control circuit. The switching converter is capable of operating from a main supply source or an auxiliary supply sou... | 03/01/2011 |
| 7888819 | Multi-input power converter and uninterruptible power supply having the same An uninterruptible power supply has first and second input terminals, first and second inductors, first and second AC switch units, first and second storing devices and a control unit. The first and the second inductors are electrically connected to the first and th... | 02/15/2011 |
| 7888820 | Delocalized intrastructure power grid and devices The present invention relates to a delocalized power generation system with computer controls and storage optimization capacity. A plurality of power generating systems is linked to a building along with a plurality of electrical storage means. By selectively chargi... | 02/15/2011 |
| 7875995 | 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 ... | 01/25/2011 |
| 7847434 | Cogeneration system A cogeneration system comprising a generator connected to an AC power feed line between a power network and an electrical load and an internal combustion engine for driving the generator and for supplying its exhaust heat to a thermal load. The power supply from the... | 12/07/2010 |
| 7843083 | 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... | 11/30/2010 |
| 7839020 | Electric power supply system An electric power supply system which, in the event of a power failure, is capable of efficiently supplying electric power to household electric appliances in cooperation of a vehicle, including a mechanism supplying electric power outside the vehicle, with a statio... | 11/23/2010 |
| 7830039 | Systems and circuits with multirange and localized detection of valid power Methods and systems for automatically and/or locally adjusting power-valid detection. In one class of embodiments, local power-on-reset circuits are included in individual power islands; in another class of embodiments, the power-on-reset circuit is automatically re... | 11/09/2010 |
| 7821159 | 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 ... | 10/26/2010 |
| 7800248 | 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 and with a network monitoring device with a switch topology including a first connection node, that is connected to the customer generation ... | 09/21/2010 |
| 7786618 | Apparatus, system and method for a UPS According to one aspect of the invention, a UPS includes an input configured to be coupled to an AC power source, a DC power source, an output configured to receive power from at least one of the AC power source and the DC power source, a first switched receptacle o... | 08/31/2010 |
| 7781914 | 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. ... | 08/24/2010 |
| 7737580 | 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 recei... | 06/15/2010 |
| 7714462 | Composite backup-type power supply system A composite backup-type power supply system can be configured and assembled to become a small backup-type power supply system or a large backup-type power supply system according to actual requirements. In a condition of a lower loading requirement, one power supply... | 05/11/2010 |
| 7696642 | Cogeneration system In a cogeneration system having a generator unit that generates DC power, an internal combustion engine for driving the generator unit, a battery that stores DC power for starting the engine, and an inverter that inverts the DC power generated by the generator unit ... | 04/13/2010 |
| 7663266 | Modular DC-DC standby voltage converter having programmable sequencing An information handling system having a modular DC-DC standby power converter with programmable sequencing. The modular DC-DC standby power converter comprises a plurality of DC inputs and a plurality of DC outputs. The modular DC-DC standby power converter may also... | 02/16/2010 |
| 7638899 | 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 leas... | 12/29/2009 |
| 7566991 | Retrofittable power distribution system for a household A power distribution system for retrofitting to a household or other building. The power distribution system includes a means for supplying energy to the power distribution system for an indeterminate period of time. The power distribution system further comprises a... | 07/28/2009 |
| 7557464 | System and method for isolating sources and loads of a power system A system and method for isolating sources and loads of a power system are disclosed. Briefly described, one embodiment includes at least a DC bus operable at a DC bus voltage; a non-isolated first primary converter module electrically coupled to the DC bus and opera... | 07/07/2009 |
| 7550874 | 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 coupl... | 06/23/2009 |
| 7538450 | Power switch device and method for cluster computer A power switch device and method for a cluster computer is described. A power input circuit receives plural input powers and plural state signals corresponding to the input powers. A first output circuit supplies the input powers to a head node and at least one comp... | 05/26/2009 |
| 7531918 | Hot insertion and extraction of power supply module Disclosed is a power supply module for use in an electronic system having redundant power supply modules connected to a power bus. The power supply module includes an output filter. The output filter is configured, upon insertion of the power supply module into the ... | 05/12/2009 |
| 7531919 | Multiple generator loadcenter and method of distributing power from multiple generators A loadcenter supplies power to a non-critical load, a critical load and an ultra-critical load, and is capable of isolating a first distribution panel distributing power to the non-critical load from a second distribution panel distributing power to the critical loa... | 05/12/2009 |
| 7525218 | Uninterruptible power supply, uninterruptible power supply system and shutdown processing program product An uninterruptible power supply and its load device are connected by a network, and the load device to which power is fed by the uninterruptible device properly executes shutdown processing. Communication means 49 of uninterruptible power supplies 2 an... | 04/28/2009 |
| 7449798 | Co-generated power supply system In a co-generated power supply system for performing dispersed power supply to a load, a wind turbine generator, a solar cell and a fuel cell whose rated voltages are made equal to a rated voltage of a storage battery are used as DC power sources. These DC power sou... | 11/11/2008 |
| 7423355 | Power controller, apparatus provided with backup power supply, program for controlling power, and method for controlling power The present invention constructs a flexible power supply backup system corresponding to electronic devices (apparatuses) at low cost, and realizes reliable operation of the apparatuses. There is provided a power controller 1 that controls power of an apparatu... | 09/09/2008 |
| 7420294 | 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 fo... | 09/02/2008 |
| 7418314 | 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 powe... | 08/26/2008 |
| 7394170 | Reconfigurable backplane power distribution A backplane system for reconfigurable backplane power distribution includes circuit board slots, power entry modules, power distribution circuitry, and switching circuitry. The power distribution circuitry includes a first power configuration and a second power conf... | 07/01/2008 |
| 7352578 | Fuel cell system with inverter and phase change material The present invention is a back-up power supply of alternating current and direct current, with the alternating current being generated by an inverter from the direct current, which is produced by a fuel cell. The inverter is at least partially encompassed by a phas... | 04/01/2008 |
| 7345380 | Backup power supply system with a null transfer time A backup power supply system supplies power from a first ac power source in normal condition. Once the first ac power source is abnormal or fails, the system automatically turns off the first ac power source and turns on a second ac power source with null transfer t... | 03/18/2008 |
| 7332833 | Switching circuit for master-slave feeding mode of low voltage power supply The present invention provides a switching circuit for the master-slave feeding mode of the low voltage power supply. The switching circuit utilizes the active switches as the switching devices, so that it can increase the switching speed, decrease the voltage drop ... | 02/19/2008 |
| 7322799 | Scalable, modular, high availability fan system In one embodiment, the invention recites a fan motor assembly with integrated redundant availability. The fan motor assembly comprises a fan motor subassembly with a plurality of replaceable fan motors, and a fan motor selector mechanism coupled to the fan motor sub... | 01/29/2008 |
