| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 07/09/2009 | WO2009083447A2 Apparatus and method for operating a wind turbine under low utility grid voltage conditions |
| 07/09/2009 | WO2009083445A1 Apparatus and method for controlling the reactive power from a cluster of wind turbines connected to a utility grid |
| 07/09/2009 | US20090177331 Energy-Saving Service Offering Method And Apparatus Therefor |
| 07/09/2009 | US20090174372 Analog Output Circuit, Data Signal Line Driving Circuit, Display, and Potential Writing Method |
| 07/09/2009 | US20090174262 Power supply and controller circuits |
| 07/09/2009 | US20090174261 Redundant power supply system |
| 07/09/2009 | US20090174259 Natural Energy Power Supplying Apparatus |
| 07/09/2009 | US20090173589 System and Method for Generating Electricity from Automobile Traffic |
| 07/08/2009 | EP2076952A1 System for generating, converting, distributing and electrically starting on board an aircraft |
| 07/08/2009 | EP1839257A4 Reducing the cost of distributed electricity generation through opportunity generation |
| 07/08/2009 | CN201270419Y Solar photovoltaic grid connected grid connected electricity generation plant |
| 07/08/2009 | CN201270418Y Box type high voltage passive automatic compensation apparatus |
| 07/08/2009 | CN201270417Y Voltage adjusting inductive passive automatic compensation apparatus |
| 07/08/2009 | CN101479910A Hvdc system and method to control a voltage source converter in a hvdc system |
| 07/08/2009 | CN101479908A Demand control device |
| 07/08/2009 | CN101478168A Method for optimizing electric grid hydroelectricity rotation backup in real-time scheduling |
| 07/08/2009 | CN101478167A Soft grid connection control method for wind-driven generator set |
| 07/08/2009 | CN101478166A Minimum energy compensation control and analysis method for three-phase electric system DVR |
| 07/08/2009 | CN101478165A Three phase power compensator for electrical railway |
| 07/08/2009 | CN101478164A Control method for independent and grid connected dual mode operated inverter |
| 07/08/2009 | CN101478163A High low voltage automatic control filtering compensation method |
| 07/08/2009 | CN101478162A Minimum zero-sequence component compensation control method for three-phase bridge type DVR |
| 07/08/2009 | CN101478161A Active electric filter compensation current control model and method under arbitrary electric grid voltage |
| 07/08/2009 | CN101478160A Electric system tide optimization method for high-efficient processing complex electric control appliance |
| 07/08/2009 | CN101478159A Transient stabilized constraint tide optimization process based on differential equality constraint conversion order reduction |
| 07/08/2009 | CN101478158A Analysis method for DVR compensation policy |
| 07/08/2009 | CN101478157A Automatic electricity generation control system and load prediction automatic integrated optimization method |
| 07/08/2009 | CN101478156A CPS test punishment sharing system based on UCPS |
| 07/08/2009 | CN101478155A Electronic energy saving device |
| 07/08/2009 | CN100511912C Current source type photovoltiac parallel-in system and control device and method thereof |
| 07/08/2009 | CN100511911C A method and a device for selecting and dimensioning measures in case of instability in an electrical power system |
| 07/08/2009 | CN100511910C Current and DC side voltage control method for injected mixed active power filter |
| 07/08/2009 | CN100511905C Method and apparatus for ground fault protection |
| 07/07/2009 | US7558087 Multilevel AC/DC converter for traction applications |
| 07/07/2009 | US7558086 Inverter control circuit with a resonant frequency modulation function |
| 07/07/2009 | US7558085 Power converter with an adjustable output cable |
| 07/07/2009 | US7557467 Portable photographing apparatus and power switching control method |
| 07/07/2009 | US7557463 Image forming apparatus having power supply apparatus |
| 07/07/2009 | US7557462 Light emitting diode flexible printed circuit having a switching unit for switching between a series mode and a parallel mode |
| 07/07/2009 | CA2443613C Method for operating a wind energy plant |
| 07/02/2009 | WO2009082375A1 Harmonic filter with integrated power factor correction |
| 07/02/2009 | WO2009082326A1 Method, system and device for controlling wind power plants |
| 07/02/2009 | WO2009081205A2 Grid synchronisation |
| 07/02/2009 | WO2009080122A1 A control arrangement, a controle device, a method, a computer program and a computer readable medium |
| 07/02/2009 | US20090171509 Electric Power Flow Control |
| 07/02/2009 | US20090168468 Converter Station |
| 07/02/2009 | US20090167095 Connection and disconnection sequence for variable speed wind turbine having an exciter machine and a power converter not connected to the grid |
| 07/02/2009 | US20090167093 Systems and Circuits with Multirange and Localized Detection of Valid Power |
| 07/02/2009 | US20090167088 Method and device for preventing the disconnection of an electric power generating plant from the electrical grid |
| 07/02/2009 | US20090167082 Driving system having changeable output phase |
| 07/02/2009 | US20090167080 Current balancing for multi-phase converters |
| 07/02/2009 | US20090166142 Tunnel type power generating apparatus and method of generating power using the same |
| 07/02/2009 | DE102007062797A1 Elektrogerät Household appliances |
| 07/01/2009 | EP2075891A1 Electric power system |
| 07/01/2009 | EP2075890A1 Method for fast frequency regulation using a power reservoir |
| 07/01/2009 | EP2075463A2 Wind power installation and method of operating it |
| 07/01/2009 | CN201266839Y Mounting structure for voltage equalizing resistance and capacitance on DC side of high-pressure laminating bus bar |
| 07/01/2009 | CN101473507A Power compensator and method for providing black startup through the compensator |
| 07/01/2009 | CN101471569A Solar power generating system |
| 07/01/2009 | CN101471568A High voltage 6600V-26A,SFH-300K energy-saving system technology device |
| 07/01/2009 | CN100508347C Device for covering the peak load |
| 07/01/2009 | CN100508327C Photovoltaic three-phase grid control method for fast and steadily implementing maximal power tracing |
| 07/01/2009 | CN100508326C Device for the prevention of serious faults in electrical mains supply networks |
| 07/01/2009 | CN100508325C Three-phase unbalance load compensation method |
| 06/30/2009 | US7554274 System and method for lighting control network recovery from master failure |
| 06/25/2009 | WO2009078075A1 Aerogenerator system |
| 06/25/2009 | WO2009076968A2 Event-based control system for wind turbine generators |
| 06/25/2009 | WO2009027520A3 Modular converter system with interchangeable converter modules |
| 06/25/2009 | WO2008115479A3 System and method for creating a networked infrastructure distribution platform of fixed hybrid solar wind energy generating devices and sheets |
| 06/25/2009 | US20090164393 Power system stabilization system |
| 06/25/2009 | US20090160260 Electrical Generation Protection System |
| 06/25/2009 | US20090160257 Method for automatic operating voltage detection |
| 06/25/2009 | US20090160253 System and Method of Providing Power Using Switching Circuits |
| 06/25/2009 | US20090160250 Self-Coupled Transformer Boostbuck Circuit |
| 06/25/2009 | DE102007062287A1 Verfahren zum Herstellen eines Druckprodukts A method for producing a printed product |
| 06/25/2009 | DE102007056618A1 Solar collector plant, has transfer device for transferring direct current produced by sunbeams into alternating current, and alternator and internal combustion engine connected to common shaft of direct current electric motor |
| 06/25/2009 | CA2697236A1 Wind turbine generator |
| 06/24/2009 | EP2073336A1 Electrical device for managing several electric consumer branch pipes |
| 06/24/2009 | EP1548278B1 Wind energy plant with a self powered control device with an active power and reactive power regulation module |
| 06/24/2009 | EP1273091B1 An improved electrical substation |
| 06/24/2009 | CN201263090Y Diesel-electric set digital joint control apparatus for oil drilling rig |
| 06/24/2009 | CN201263089Y Automatic switching reactive compensator of adjustable reactor type capacitor |
| 06/24/2009 | CN101465552A Control system and method for operating a wind farm in a balanced state |
| 06/24/2009 | CN101465551A Generator system with intelligent processing of position signal |
| 06/24/2009 | CN101465550A Sdelayed time processing and compensating system for wide domain damped control of electric power system |
| 06/24/2009 | CN101465549A Reconstruction configuration method for two six-pulse parallel connection commutation group valve |
| 06/24/2009 | CN101465548A Micro power consumption quick discharge device for AC capacitor |
| 06/24/2009 | CN101465547A Optimum tide solvability identification method for electric power system |
| 06/24/2009 | CN101465546A Electric energy quality synthesis evaluation system |
| 06/24/2009 | CN101465545A Detection method for hyposynchronous resonance of series complement system |
| 06/24/2009 | CN101465544A Real time collection and monitoring system for electrification side control performance standard check |
| 06/24/2009 | CN101465543A Power economizer for low matching system |
| 06/24/2009 | CN101465542A Low-frequency oscillation real time monitoring algorithm for electric power system |
| 06/24/2009 | CN100505470C Flexible AC transmitting system based on flywheel energy storage |
| 06/24/2009 | CN100505469C Flexible AC double-feed type wind generating and transmitting system |
| 06/23/2009 | US7550954 Method and circuit for a voltage supply for real time clock circuitry based on voltage regulated charge pump |
| 06/23/2009 | US7550952 Electric power control apparatus, power generation system and power grid system |
| 06/23/2009 | US7550875 Power converter and related method capable of providing multiple output voltages |
| 06/23/2009 | US7550871 Power adapter featuring multiple power outputs |
| 06/23/2009 | US7550870 Method and apparatus for remote power management and monitoring |