| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 04/07/2009 | US7514898 Low loss propulsion system |
| 04/07/2009 | US7514814 Automatic sensing power systems and methods |
| 04/07/2009 | US7514813 Electric power supply system |
| 04/03/2009 | CA2640293A1 Apparatus for providing electrical power to electrical device and method of use |
| 04/02/2009 | WO2009040943A1 Power supply device |
| 04/02/2009 | WO2009040842A1 Apparatus for simulating a non-linear load, to be connected to an electric distribution network |
| 04/02/2009 | WO2009040250A2 Power control device of a power network of an electrochemical coating facility |
| 04/02/2009 | WO2009040140A1 Decentralized energy system and method for distributing energy in a decentralized energy system |
| 04/02/2009 | WO2009039888A1 Method and inverter for feeding ac-current into mains for part load conditions |
| 04/02/2009 | WO2009019080A3 Motor vehicle electric system with a communication flow inside the electric system |
| 04/02/2009 | WO2005043742A3 Universal three phase controllers for power converters |
| 04/02/2009 | US20090085404 Co-generated power supply system |
| 04/02/2009 | US20090085403 Apparatus and method for reducing neutral line current using load switching method |
| 04/02/2009 | US20090085400 Single- or dual-inverter auxiliary power conversion apparatus and system and narrow-hysteresis charging method |
| 04/02/2009 | DE202007016800U1 Windkraftanlage mit Synchronisierungsschalter Wind turbine with synchronizing switch |
| 04/02/2009 | DE102008015439B3 Flow path's partial alternating currents symmetrizing arrangement for e.g. circuit breaker, has secondary windings assigned to flow paths, where half of windings are oriented opposite to another half of windings with respect to paths |
| 04/02/2009 | DE102007046239A1 Electrical energy producing and feeding method for superordinate power supply network, involves temporarily storing part of energy in buffer, before energy is supplied to conversion device for conversion into network conformable form |
| 04/02/2009 | DE102007043123A1 Method for excitation of asynchronous machine for generating isolated operation in isolated network, involves conducting reactive power generation for excitation with non-variable condenser of maximum effective power of asynchronous machine |
| 04/02/2009 | CA2700052A1 Power control device of a power supply system of an electrochemical coating facility |
| 04/01/2009 | EP2043239A1 Method in connection with mains side converter |
| 04/01/2009 | EP2041853A2 A load management controller for a household electrical installation |
| 04/01/2009 | CN201215929Y Photovoltaic integrating net power generating system realizing on-line capacity enlarging |
| 04/01/2009 | CN201215892Y Large power modularized DC power supply apparatus |
| 04/01/2009 | CN201215569Y Centralized voltage real-time monitoring and management system |
| 04/01/2009 | CN101401275A Charge controller |
| 04/01/2009 | CN101401252A Temperature controller |
| 04/01/2009 | CN101399518A Constant-current energy-saving phase advancer |
| 04/01/2009 | CN101399445A Electric power generation with magnetically geared machine |
| 04/01/2009 | CN101399444A Characteristic evaluation method for influence of capacitor switching to dynamic voltage oscillation |
| 04/01/2009 | CN100474730C A device and a method for control of power flow in a transmission line |
| 04/01/2009 | CN100474200C System and method for residential emissions trading |
| 03/31/2009 | US7512540 Automated new energy technology consulting and demand aggregation system and method |
| 03/31/2009 | US7512422 RF generator with commutation inductor |
| 03/31/2009 | US7511457 Multi-series battery control system |
| 03/31/2009 | US7511388 System and method of detection of power loss in powered ethernet devices |
| 03/31/2009 | CA2291860C Fuel cell device |
| 03/26/2009 | WO2009038336A2 Apparatus for improving power quality |
| 03/26/2009 | WO2008116929A4 Damping multiple modes of electromagnetic oscillations in power distribution systems |
| 03/26/2009 | US20090082910 Information processing apparatus |
| 03/26/2009 | US20090079267 Converter control unit |
| 03/26/2009 | DE202008016967U1 Steuereinheit zum Energieflussmanagement von Stromverbrauch und Einspeisung an Stromnetzen Control unit for energy flow management of power consumption and power supply to power grids |
| 03/26/2009 | DE202007018738U1 Hochspannungsanlage High-voltage system |
| 03/26/2009 | CA2700248A1 Wind park with voltage regulation of the wind energy systems and operating method |
| 03/26/2009 | CA2699586A1 Method and apparatus for monitoring power transmission |
| 03/25/2009 | EP1525660B1 Circuit arrangement for controlling two independent load resistors that can be operated with a rectified alternating current voltage |
| 03/25/2009 | CN201213250Y Interference suppressing independent filter |
| 03/25/2009 | CN201213226Y Active filtering device |
| 03/25/2009 | CN201213083Y Dry type magnet controlled reactor |
| 03/25/2009 | CN201211845Y Light rail vehicle auxiliary inverter parallel arrangement |
| 03/25/2009 | CN101395431A Cogeneration system |
| 03/25/2009 | CN101394093A Incorporating network and method for wind electricity generator group |
| 03/25/2009 | CN101394092A Separate network and method for operating a separate network |
| 03/25/2009 | CN101394091A Voltage feedback single-stage power factor calibrating circuit |
| 03/25/2009 | CN101394090A Power system protecting system |
| 03/25/2009 | CN101394089A Control method for three phase active electric power filter to output current wave |
| 03/25/2009 | CN101394088A Topology node numbering method for electricity grid model |
| 03/25/2009 | CN101394087A Method for integrating EMS network model with BPA network model of external network |
| 03/25/2009 | CN101394074A Parallel monopole metallic loop ice melting operation wiring scheme for inverter |
| 03/25/2009 | CN101393465A Bridge type series, parallel and mixture connection electric energy regulator based on IGBT |
| 03/25/2009 | CN101392730A Parallel paddle type large-sized wind-driven generator |
| 03/25/2009 | CN100472913C Fault current-limiting device for transmission and distribution electric network |
| 03/25/2009 | CN100472911C Electric power system protective device |
| 03/25/2009 | CN100472685C Method for mains-synchronous switching of circuit breakers, and apparatus for carrying out this method |
| 03/25/2009 | CN100472031C System and method for transmitting electric power into a bore |
| 03/24/2009 | US7509176 Circuit for reducing the wiring needed to control the functions of a vehicle |
| 03/24/2009 | US7508224 Method for measuring stability margin at a node of a polyphase power grid |
| 03/24/2009 | US7508092 Automatic sensing power systems and methods |
| 03/24/2009 | CA2609054A1 Power transformer distribution network and method of operating same |
| 03/24/2009 | CA2469768C A methodology for time-shifting electrical grid energy consumption to optimize cost rate and grid load level |
| 03/19/2009 | WO2009033955A2 Method for operating an energy supply network |
| 03/19/2009 | WO2009033506A1 Stacom system for providing reactive and/or active power to a power network |
| 03/19/2009 | WO2009016038A3 Controlling distribution of electrical power |
| 03/19/2009 | WO2009015066A9 Modular vehicle power system |
| 03/19/2009 | US20090076661 Apparatus, system, and method to manage the generation and use of hybrid electric power |
| 03/19/2009 | US20090072625 Electric power supply system |
| 03/19/2009 | US20090072622 Load drive circuit, delay circuit, and semiconductor device |
| 03/19/2009 | US20090072621 Power supply system, power cable distributor, power supply subrack and integrated equipment |
| 03/19/2009 | US20090072620 Method and apparatus for resistive power distribution |
| 03/18/2009 | EP2036181A1 Hvdc system and method to control a voltage source converter in a hvdc system |
| 03/18/2009 | EP2036180A1 Power compensator and method for providing a black start with that compensator |
| 03/18/2009 | CN201210666Y Intelligent dual feeding synchronous phase device |
| 03/18/2009 | CN201210619Y Capacitor set apparatus for air-articulated isolation switch |
| 03/18/2009 | CN201210618Y Inductive automatically electricity saving device |
| 03/18/2009 | CN101390268A Emergency power supply system using fuel cell |
| 03/18/2009 | CN101390267A Control of power flow in a transmission line |
| 03/18/2009 | CN101390266A Demand control device |
| 03/18/2009 | CN101388564A Combined power supply device and operating method thereof |
| 03/18/2009 | CN101388552A Method for lowering distribution network loss and improving system voltage |
| 03/18/2009 | CN101388551A Electricity quality intelligent monitoring and resonating device |
| 03/18/2009 | CN101388550A Intelligent building electricity saving and distributing apparatus |
| 03/18/2009 | CN101388549A Passive, negative sequence and harmonic coordinating control method for mixed type electric energy quality regulator |
| 03/18/2009 | CN101388548A Dead zone processing method and logic circuit for distribution network electric energy quality regulator |
| 03/18/2009 | CN100470999C Mixing type idle work compensator |
| 03/18/2009 | CN100470998C Mixing type idle work compensator |
| 03/18/2009 | CN100470997C Active mode adjustment device for AC load characteristic |
| 03/18/2009 | CN100470996C Static hybrid automatic voltage control method |
| 03/18/2009 | CN100470995C Distributed computing method of the features of the power system |
| 03/17/2009 | US7506184 Current detection for microelectronic devices using source-switched sensors |
| 03/17/2009 | US7504749 Switch and system for controlling electric loads |
| 03/17/2009 | US7504745 Multifunctional multi-outlet of saving electric power and a control method employing the same |