| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 11/25/2009 | EP2123909A2 Measuring system intended for grid quality and power curve testing in wind turbines and power supply quality testing |
| 11/25/2009 | EP2123908A1 Asynchronous generator with double supply |
| 11/25/2009 | EP2122819A1 Method and arrangement to reverse the power flow of a direct current power transmission system |
| 11/25/2009 | EP2122797A1 Tapping power from a hvdc transmission system |
| 11/25/2009 | CN201352713Y Photovoltaic array junction box |
| 11/25/2009 | CN201352712Y Synchronous switching control cabinet with automatic correction system |
| 11/25/2009 | CN201352711Y Zero-sequence filter complete equipment for three-phase four-wire system alternating current system |
| 11/25/2009 | CN201352695Y Press plate for cable entry device |
| 11/25/2009 | CN201352491Y Adjustable magnetic hollow filter reactor |
| 11/25/2009 | CN201350850Y Non phase-split traction power supply for railway locomotive |
| 11/25/2009 | CN101589532A A device and a method for supplying power to a critical load |
| 11/25/2009 | CN101588073A Balancing power distribution system of 10kV and below power distribution network |
| 11/25/2009 | CN101588072A Novel energy-saving power regulator |
| 11/25/2009 | CN101588071A Reactive power compensation control method of three-phase unbalance system |
| 11/25/2009 | CN101588070A Method for designing and distributing the dynamic capacity and fixed capacity of parallel connection mixed type comprehensive compensation arrangement |
| 11/25/2009 | CN101588069A Harmonic-var comprehensive compensation system based on two-way dynamic reactive power compensation devices |
| 11/25/2009 | CN101588068A Automatic load-reducing control method for integrating the voltage frequency dynamic mutual influence |
| 11/25/2009 | CN101588067A Safety accident retrospection and review method of electrical power system |
| 11/25/2009 | CN101588066A Power distribution device |
| 11/25/2009 | CN101587487A Method for realizing graphic dynamic distribution index of electric network |
| 11/25/2009 | CN101587359A Novel voltage stabilizer filtering topology and filtering control method |
| 11/25/2009 | CN100563078C A method for accurately computing the power line loss |
| 11/24/2009 | US7622826 Flicker improvement effect evaluating system |
| 11/24/2009 | US7622822 Power saver controller |
| 11/24/2009 | US7622821 Power distribution system and load management protocol therefor |
| 11/24/2009 | US7622816 Power control interface and energy storage between a wind farm and a power transmission system |
| 11/19/2009 | WO2009139412A1 Photovoltaic generation system |
| 11/19/2009 | WO2009138808A1 Single-phase shunt active power filter with adaptive filter capacitor voltage |
| 11/19/2009 | WO2009138574A1 Methods and devices for supervising the electrical power consumed at each instant |
| 11/19/2009 | WO2009138152A1 Wind-powered generator system |
| 11/19/2009 | WO2009137969A1 A photovoltaic grid-connected inverter device without a transformer and its control method |
| 11/19/2009 | WO2009137908A1 Voltage regulation system |
| 11/19/2009 | US20090287530 Plan execution control apparatus, plan execution control method, and plan execution control program |
| 11/19/2009 | US20090284999 Voltage source inverter and medium voltage pre-charge circuit therefor |
| 11/19/2009 | US20090284225 Information processing equipment and the integrated circuit |
| 11/19/2009 | US20090284079 Apparatus and method for controlling the motor power |
| 11/19/2009 | US20090284078 System and method for integrating local maximum power point tracking into an energy generating system having centralized maximum power point tracking |
| 11/19/2009 | US20090284073 Line voltage interface for automation systems |
| 11/19/2009 | CA2724382A1 Voltage regulation system |
| 11/18/2009 | EP2118995A1 Method and system to start multiple ac motors supplied by a power converter via a common ac bus |
| 11/18/2009 | EP2118993A1 Method for limiting damage to a converter having a power semiconductor in the case of a short circuit of an intermediate direct current circuit |
| 11/18/2009 | EP2118984A1 Power-line sag calculation by way of power-system state estimation |
| 11/18/2009 | EP2118983A1 Electrical energy converter |
| 11/18/2009 | EP2118980A1 Bipolar dc to ac power converter with dc ground fault interrupt |
| 11/18/2009 | CN201349134Y Gapless automatic switching system of generator group back-up power |
| 11/18/2009 | CN201347840Y Super high-rise building wind tunnel wind power generation integrated device |
| 11/18/2009 | CN101582593A State graph of working state of wind energy converter and display method thereof |
| 11/18/2009 | CN101582592A Transless photovoltaic merging and inverting device and control method thereof |
| 11/18/2009 | CN101582591A Chassis power distribution method and device |
| 11/18/2009 | CN101582590A Zero passage triggering time-oriented sequential control circuit of 2-control 3-type thyristor switching capacitor |
| 11/18/2009 | CN101582589A Method for optimizing active power output mode based on load margin maximization |
| 11/18/2009 | CN101582588A Efficient energy-saving device in power supply network |
| 11/18/2009 | CN101582153A Method and system for managing power network resources |
| 11/18/2009 | CN101582139A Method and system to quantify performance of power generating system |
| 11/18/2009 | CN100561825C Positive and negative order double ring stacking control method of electric power distribution static state synchronous compensator based on instantaneous power balance |
| 11/18/2009 | CN100561824C Method for eliminating and controlling SVC specific times harmonic advanced research and apparatus realizing the same |
| 11/18/2009 | CN100561823C Filter circuit |
| 11/18/2009 | CN100561822C DC power transmission frequency modulation control realizing method for puny receiving end system |
| 11/17/2009 | US7620482 Electricity market-oriented dc-segmentation design and optimal scheduling for electrical power transmission |
| 11/17/2009 | US7619905 Method of controlling connection of a supply of AC power to a load and to a power supply grid |
| 11/17/2009 | US7619327 Hybrid electromechanical power transfer system |
| 11/17/2009 | US7619322 Two-wire power and communications for irrigation systems |
| 11/17/2009 | CA2392409C Voltage regulation of a utility power network |
| 11/17/2009 | CA2174568C Interconnection system for transmitting power between electrical systems |
| 11/12/2009 | WO2009136864A1 Electrical generator and electrical generation system |
| 11/12/2009 | WO2009136641A1 System stabilizing devices |
| 11/12/2009 | WO2009136640A1 System stabilizing device |
| 11/12/2009 | WO2009136639A1 System stabilizing device |
| 11/12/2009 | WO2009136451A1 Transformation device for automatically adjusting voltage of three-phase power supply |
| 11/12/2009 | WO2009135736A1 Circuitry for feeding a drive machine having a plurality of winding systems |
| 11/12/2009 | WO2009135655A1 Wave power plant and method for operating the same |
| 11/12/2009 | WO2009135528A1 A voltage source converter |
| 11/12/2009 | WO2009135250A1 In-line power controller |
| 11/12/2009 | WO2009102842A3 Method and apparatus for distributed var compensation |
| 11/12/2009 | WO2009063212A3 Method and apparatus for providing heat and power |
| 11/12/2009 | WO2009036895A3 Wind park with voltage regulation of the wind energy systems and operating method |
| 11/12/2009 | US20090279328 Hvdc system and method to control a voltage source converter in a hvdc system |
| 11/12/2009 | US20090278506 System and method for dynamic power management of a mobile device |
| 11/12/2009 | US20090278405 Systems and methods for multiple source power conversion |
| 11/12/2009 | DE102008022077A1 Schaltung zur Speisung einer Antriebsmaschine mit mehreren Wicklungssystemen Circuit for supplying a driving machine with several winding systems |
| 11/12/2009 | CA2723892A1 Method and system for managing a power grid |
| 11/11/2009 | EP2115547A1 Switching technique for efficient electrical power utilization |
| 11/11/2009 | EP2115298A1 Multiple generator wind turbine and method of operation |
| 11/11/2009 | CN201345551Y Parallel control system of integrated diesel generating set of relay |
| 11/11/2009 | CN201345550Y A three-phase non-office amplifying power harmonic power-supply apparatus |
| 11/11/2009 | CN201345549Y High voltage dynamic filter compensation device |
| 11/11/2009 | CN201345548Y Dynamic reactive power compensation intelligent composite switch |
| 11/11/2009 | CN201345547Y Reactive power compensation device for power system |
| 11/11/2009 | CN201345546Y Compensation device for regulating three-phase unbalanced current and power factor |
| 11/11/2009 | CN201345545Y Circuit for detecting parallel resonance fundamental wave |
| 11/11/2009 | CN201345544Y Comprehensive power quality controller of voltage type harmonic source |
| 11/11/2009 | CN201345506Y Intellectualized power distribution cabinet |
| 11/11/2009 | CN201345498Y Main connection for high voltage standby transformer of generating sets to lead wire |
| 11/11/2009 | CN201344675Y Wind-solar complementary ground-source heat pump air-conditioner unit |
| 11/11/2009 | CN101577509A Photovoltaic conversion system |
| 11/11/2009 | CN101577485A Wide band filter |
| 11/11/2009 | CN101577434A Control method of restraining output DC component of grid-connected photovoltaic inverter |
| 11/11/2009 | CN101577433A Method for inquiring heavy load of ship power station power management |
| 11/11/2009 | CN101577432A Reactive power compensation method and control device adopting same |
| 11/11/2009 | CN101577431A Comprehensive household electricity-saving appliance |