| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 11/26/2008 | EP1994452A2 System and methods for a self-healing grid using demand side management techniques and energy storage |
| 11/26/2008 | EP1994416A2 Energy budget manager |
| 11/26/2008 | CN201156670Y Intelligent multiple protection automatic electricity economizer |
| 11/26/2008 | CN201156669Y Series capacity direct coupling type dynamic voltage recovery device |
| 11/26/2008 | CN100438257C Separate network and method for operating a separate network |
| 11/26/2008 | CN100438256C Power-less compensation control method |
| 11/26/2008 | CN100438248C Protective relay |
| 11/26/2008 | CN100438163C Fuel cell system |
| 11/25/2008 | US7458028 Graphical interface for configuring a power supply controller |
| 11/25/2008 | US7456696 Circuit and method of compensating for signal delay in a cable |
| 11/25/2008 | US7456604 Electric power control apparatus, power generation system and power grid system |
| 11/25/2008 | US7456524 Apparatus for and methods of polyphase power conversion |
| 11/25/2008 | US7456523 Power generation system, and administration apparatus and administration method of power generation system |
| 11/25/2008 | US7456519 Power conversion system |
| 11/25/2008 | US7456516 Power line terminating circuit and method, and power line relay device |
| 11/20/2008 | WO2008141092A2 Dynamic voltage sag correction |
| 11/20/2008 | WO2008139758A1 Power quality compensator |
| 11/20/2008 | WO2008139311A2 Method and parameterisable device for distributing and managing power |
| 11/20/2008 | WO2008138911A1 Redundant current valve control in a high voltage power transmission system |
| 11/20/2008 | WO2008138288A1 Inverter for power supply system feeding into an ac power supply system |
| 11/20/2008 | WO2008138020A1 Method for controlling an inverter, and inverter |
| 11/20/2008 | WO2008094403A3 Power system with multiple generator sets |
| 11/20/2008 | US20080284408 Sequential calibration of matched current sources |
| 11/20/2008 | US20080284247 Method for operating a system of modular structure, in particular a process automation system |
| 11/20/2008 | CA2687696A1 Dynamic voltage sag correction |
| 11/19/2008 | EP1993184A1 Method of start up at least a part of a wind power plant, wind power plant and use of the wind power plant |
| 11/19/2008 | EP1993183A1 Power system stabilizing system |
| 11/19/2008 | EP1774636A4 Apparatus and method for inductive power transfer |
| 11/19/2008 | CN201153214Y Capacitor type booster |
| 11/19/2008 | CN201153193Y Intelligent measurement and control distribution box |
| 11/19/2008 | CN101310434A Power converters |
| 11/19/2008 | CN101310227A Predictive contract system and method |
| 11/19/2008 | CN101309012A Control methods for the synchronization and phase shift of the pulse width modulation (PWM) strategy of power converters |
| 11/19/2008 | CN101309011A Magnet controlled voltage regulating imaginary power automatic compensation method and device |
| 11/19/2008 | CN101309010A Power factor compensator having LED lighting lamp |
| 11/19/2008 | CN101309009A Urban electric grid overall evaluation system established based on layer analysis and Delphi |
| 11/19/2008 | CN101309002A Method of start up at least a part of a wind power plant, wind power plant and use of the wind power plant |
| 11/19/2008 | CA2631174A1 Control methods for the synchronisation and phase shift of the pulse width modulation (pwm) strategy of power converters |
| 11/18/2008 | US7454641 System powered from a local area network cable |
| 11/18/2008 | US7454432 Section identification and distribution system monitoring system, method and program product |
| 11/18/2008 | US7454270 Dynamic economic dispatch for the management of a power distribution system |
| 11/18/2008 | US7453352 Data communication over a power line |
| 11/14/2008 | CA2631153A1 Method of start up at least a part of a wind power plant, wind power plant and use of the wind power plant |
| 11/13/2008 | WO2008138016A1 Alternative-source energy management |
| 11/13/2008 | WO2008136716A1 Power station for power transmission to remotely located load |
| 11/13/2008 | WO2008135549A2 Method for controlling backup power sources connected in parallel and device comprising backup power sources connected in parallel |
| 11/13/2008 | WO2008134997A2 Method and device for determining load flow in an electrical supply grid |
| 11/13/2008 | WO2008134994A1 Protective arrangement for an energy supply system having a bus bar, infeed branch, and shunt |
| 11/13/2008 | WO2008073250A3 Estimation of real-time power system quanities using time-synchronized measurements |
| 11/13/2008 | US20080281474 System of Super Super Decoupled Loadflow Computation for Electrical Power System |
| 11/13/2008 | US20080278976 Dynamic voltage sag correction |
| 11/13/2008 | US20080278121 Electrical Energy Transmission Device |
| 11/13/2008 | US20080278002 Power management unit for battery-operated devices |
| 11/13/2008 | US20080278000 Methods and Systems for Intentionally Isolating Distributed Power Generation Sources |
| 11/13/2008 | US20080277936 Method of operating a wind power installation and a wind power installation |
| 11/13/2008 | CA2686671A1 Alternative-source energy management |
| 11/12/2008 | EP1990900A1 System and method for controlling input line harmonics in a motor drive |
| 11/12/2008 | EP1990885A2 Grid-connected fuel cell system and load using the same |
| 11/12/2008 | EP1989604A1 System for voltage regulation, control, protection and monitoring of state of changers under power transformer load, voltage regulators, capacitor banks and similar |
| 11/12/2008 | EP1470517A4 Method and apparatus for preventing overloads of power distribution networks |
| 11/12/2008 | CN201150004Y Joint operation control system for DSTATCOM and IVC |
| 11/12/2008 | CN201150003Y Electric energy quality active recovery system with high-capacity double-bridge structure |
| 11/12/2008 | CN201150002Y New type low-voltage active filter for industry |
| 11/12/2008 | CN201150001Y Voltage, current recuperating apparatus for medium voltage power distribution network |
| 11/12/2008 | CN101305283A Method and apparatus for verifying the accuracy of state estimation calculations |
| 11/12/2008 | CN101304221A Solar photovoltaic interconnected inverter |
| 11/12/2008 | CN101304174A Energy recovery system for alternating-current power supplier |
| 11/12/2008 | CN101304173A Reactive-load compensation method |
| 11/12/2008 | CN101304172A Method for real time pre-compensating harmonic wave field dead region |
| 11/12/2008 | CN101304171A Method for preventing and controlling gold tool noise of extra-high voltage AC circuit |
| 11/12/2008 | CN101304162A Electric apparatus control apparatus for heat treatment furnace |
| 11/12/2008 | CN101303374A Automatic voltage regulation controller and method |
| 11/12/2008 | CN100433523C Electrical power saving apparatus and method |
| 11/12/2008 | CN100433493C Power supply including system interconnection inverter |
| 11/12/2008 | CN100432547C Solar energy-ground source united heat supply, hot water supply, power supply and refrigerating system and its operation method |
| 11/11/2008 | US7449851 Arrangement for automatically influencing a mains supply and motor drive therefor |
| 11/11/2008 | US7449798 Co-generated power supply system |
| 11/11/2008 | US7449796 Power over ethernet controller suitable for multiple modes |
| 11/06/2008 | WO2008133733A1 Method and apparatus for synchronization of actions in a parallel ups system using a serial communications bus |
| 11/06/2008 | WO2008132094A1 Control system and method for a tcsc in an electric energy transport network in particular using a sliding-modes approach |
| 11/06/2008 | WO2008132093A1 System and method for control of a tcsc in an electricity transport network, specifically using a lyapunov approach |
| 11/06/2008 | WO2008132092A1 System and method for control of a tcsc in an electricity transport network, specifically using a lyapunov approach |
| 11/06/2008 | WO2008131799A1 Method and system to influence the power generation of an adjustable speed generator |
| 11/06/2008 | WO2008096133A3 An electrical supply system |
| 11/06/2008 | WO2007084036A8 A converter station |
| 11/06/2008 | US20080274772 Industrial process field device with improved battery assembly |
| 11/06/2008 | US20080272653 Power Source Apparatus and Control Method of the Power Source Apparatus |
| 11/06/2008 | US20080272651 LED current control circuits and methods |
| 11/06/2008 | CA2685171A1 Control system and method for a tcsc in an electric energy transport network in particular using a sliding-modes approach |
| 11/06/2008 | CA2685165A1 System and method for control of a tcsc in an electricity transport network, specifically using a lyapunov approach |
| 11/06/2008 | CA2685157A1 System and method for control of a tcsc in an electricity transport network, specifically using a lyapunov approach |
| 11/05/2008 | EP1987578A1 Control of power flow in a transmission line |
| 11/05/2008 | CN201146461Y Power compensator without electrochemical capacitance |
| 11/05/2008 | CN201146391Y Automatic switchover apparatus for juxtaposition economical operation of power transformer |
| 11/05/2008 | CN201146390Y Electromagnetic balance electricity economizer |
| 11/05/2008 | CN201146389Y Power system stabilizer for transforming plant |
| 11/05/2008 | CN201146388Y Low-voltage electric power harmonic-suppression combined electrical apparatus based on harmonic wave |
| 11/05/2008 | CN101300532A Initializing an estimation of dynamic model parameters |
| 11/05/2008 | CN101299587A Electric power telemechanical device RTU and method for implementing automatic voltage control of generating plant |
| 11/05/2008 | CN101299546A Solar power plant |