Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
05/2012
05/24/2012WO2012067747A2 Data alignment in large scale electrical system applications
05/24/2012WO2012067368A2 Method and device for multifunctional power conversion employing a charging device and having reactive power control
05/24/2012WO2012066915A1 Control device for electrical storage device, electrical storage device, and method for charging/discharging electrical storage device
05/24/2012WO2012066651A1 Power management system and power management method
05/24/2012WO2012065359A1 Islanding detection system for distributed generation based on power frequency carrier and detecting method thereof
05/24/2012WO2012065355A1 Nickel-metal hydride battery energy storage monitoring system
05/24/2012WO2012065348A1 Grid-connected inverter and ac harmonic filtering method for inverter
05/24/2012WO2012065199A2 Apparatus and method for controlling electrical loads
05/24/2012WO2012041317A3 Photovoltaic power plant
05/24/2012WO2012035433A3 System and method for power grid management
05/24/2012WO2012021759A3 Parallel redundant power distribution
05/24/2012US20120127763 Electric power supply system comprising power modules coupled in parallel
05/24/2012US20120126629 Controller, power inverter, photovoltaic power supply system, and method for controlling deactivation of at least one photovoltaic module
05/24/2012US20120126628 Frequency converter
05/24/2012US20120126623 Portal for harvesting energy from distributed electrical power sources
05/24/2012US20120126622 Autotransformer Traction Power Supply System Equipped With 2x27.5KV Outdoor Modularized Electric Apparatus In Electrified Railway
05/24/2012DE102010061721A1 Energieversorgungsnetzwerk für ein Luft- oder Raumfahrzeug, Verfahren zur Versorgung elektrischer Verbraucher mit Energie und Luft- oder Raumfahrzeug Energy supply network for an aircraft or spacecraft method to supply electrical consumers with energy and aircraft or spacecraft
05/24/2012DE102010052136A1 Schaltungsanordnungen für elektronisch gesteuerte DC-Netze Circuits for electronically controlled DC-nets
05/24/2012DE102010051675A1 Windenergieanlage und Verfahren zum Betreiben einer Windenergieanlage mit Temperaturüberwachung des Transformators Wind turbine and method for operating a wind turbine with temperature monitoring of transformer
05/24/2012DE102010044047A1 Energy converter of uninterruptible power supply (UPS) for electric vehicle e.g. electric bicycle, has control unit that performs synchronization of alternating voltage based on information exchanged by other energy converter
05/24/2012DE102007041793B4 Verfahren und Vorrichtung zur Bestimmung der Verluste eines Energiewandlers, insbesondere eines Stromrichters oder Synchrongenerators, sowie dazugehöriger Energiewandler Method and apparatus for determining losses of an energy converter, in particular a converter or synchronous generator, as well as related energy converter
05/24/2012CA2814723A1 Method for connecting a photovoltaic installation to a power supply grid
05/24/2012CA2814112A1 Controller for hybrid energy storage
05/23/2012EP2456037A2 Enhanced plant level support of grid reconstruction
05/23/2012EP2456036A1 Power control system, method, device and program
05/23/2012EP2456034A2 Photovoltaic assembly and photovoltaic module
05/23/2012EP2454796A2 Smart and scalable power inverters
05/23/2012EP2454795A2 Method and apparatus for identifying redeployed distributed generator components
05/23/2012EP2454794A2 Apparatus for conversion of an electric quantity comprising a neutral point reactor
05/23/2012EP2454793A2 Method for operating a domestic appliance and domestic appliance
05/23/2012EP2454792A2 Domestic appliance and method for operating a domestic appliance
05/23/2012EP2454791A2 Domestic appliance comprising a communication unit, system of appliances and method for operating a domestic appliance
05/23/2012EP1665494B1 Method for operating or controlling a wind turbine and method for providing primary control power by means of wind turbines
05/23/2012CN202231668U Intelligent capacitance increase compensation device
05/23/2012CN202231667U Energy saver of die casting machine
05/23/2012CN202231653U Combined switch used for MCR dynamic reactive compensation and motor soft start
05/23/2012CN202231465U Optical storage type electric automobile charging station
05/23/2012CN202231445U Solar AC photovoltaic assembly
05/23/2012CN202231444U Wide area dynamic wind power grid connected adjusting system based on superconductive energy storage apparatus
05/23/2012CN202231443U Valve block
05/23/2012CN202231442U Hybrid reactive power compensation device
05/23/2012CN202231441U Active power factor correction circuit
05/23/2012CN202231440U Low-noise energy-saving three-phase intelligent combination switch
05/23/2012CN202231439U Reactive power compensating and filtering integrated system for electric drilling machine
05/23/2012CN202231438U Compact power filter
05/23/2012CN202231437U Single-phase power supply filter easy to change impedance matching
05/23/2012CN202231436U High performance alternating current three-phase power supply filter
05/23/2012CN202231435U PDU power supply
05/23/2012CN202231434U Intelligent power saver
05/23/2012CN102474199A Power conversion apparatus, grid connection apparatus, and grid connection system
05/23/2012CN102474196A 发电系统 Power generation systems
05/23/2012CN102474132A Utilization-time changing support device, and method therefor
05/23/2012CN102474131A Comprehensive monitoring and control system for smart grid and microgrid
05/23/2012CN102474117A Method of efficiently managing power
05/23/2012CN102474106A 配电系统 Distribution system
05/23/2012CN102474105A 电力系统的供求控制装置、供求控制程序及其存储介质 Supply and demand of electric power system control device, supply and demand control program and storage medium
05/23/2012CN102474104A Power supply system, power supply method, program, recording medium, and power supply controller
05/23/2012CN102474103A Power conversion apparatus, grid connection apparatus, and grid connection system
05/23/2012CN102474102A Method and apparatus for identifying redeployed distributed generator components
05/23/2012CN102474101A Device for inverting an electric parameter, having a star point reactor
05/23/2012CN102474100A 电力传输系统中的功率或电压振荡阻尼 Power transmission system power or voltage oscillation damping
05/23/2012CN102474099A 用于控制ac系统的方法和设备 Method for controlling the ac system and apparatus
05/23/2012CN102474098A 具有通信单元的家用电器、电器系统以及家用电器的操作方法 Household appliances have a communication unit, electrical systems, and methods of operation of household appliances
05/23/2012CN102468678A Power grid optimized direct current charging system
05/23/2012CN102468653A System and method for controlling electric energy quality stability of power distribution network
05/23/2012CN102468652A 无功功率控制系统及其控制方法 Reactive power control system and control method
05/23/2012CN102468651A Filter for specific frequency current bypass
05/23/2012CN102466765A 电源逆变装置及其电源相位检测电路 Power inverter device and the power phase detection circuit
05/23/2012CN102466741A 可编程节能电子负载 Programmable energy-saving electronic load
05/23/2012CN102465832A Low-voltage ride-through distributed power supply system and wind generating set
05/23/2012CN101977006B Method for controlling double-fed wind driven generator in power grid faults
05/23/2012CN101958683B Method for acquiring redundant stator voltage signal of double-fed wind turbine
05/23/2012CN101950962B System and method for saving energy and shaving peak by coordinating cogeneration set and wind energy generator set
05/23/2012CN101924487B Voltage control method of three-phase inverter in distributed generation system
05/23/2012CN101895130B Solution method of local boundary of injection space voltage stability region having wind power station
05/23/2012CN101854065B Control method of cascade boost chopper
05/23/2012CN101854064B Engine network side combination control algorithm based on energy of doubly-fed induction wind power generation system
05/23/2012CN101841156B Interlaced hysteresis loop tracking and compensating current generator and control method thereof
05/23/2012CN101752873B Protection method of DC electricity transmission high-voltage convertor station
05/23/2012CN101752870B Method for analysis of available power supply capacity of medium voltage distribution network
05/23/2012CN101741141B Embedded ship power station management system
05/23/2012CN101713803B Portable resistor-type current phase shifter
05/23/2012CN101710710B Wind-power-station power output counterbalance system and working method thereof
05/23/2012CN101699691B Multi-order multi-parameter adjustable electrical load device
05/23/2012CN101673954B Phase-locked loop and phase locking method of grid voltage phase measurement in grid-connection
05/23/2012CN101626162B Electricity management terminal with power factor compensation function
05/23/2012CN101540505B Building method of multistage multi-region interconnected network data model
05/23/2012CN101507078B Current balancer and low-voltage power distribution system
05/23/2012CN101479908B Demand control device
05/23/2012CN101440783B Operation control method of wind power generation
05/23/2012CN101326696B A converter station and a method for control thereof
05/23/2012CN101232180B Power distribution system load obscurity model building device and method
05/23/2012CN101015108B Electric control and supply system
05/23/2012CA2758681A1 System and method for communicating over power lines
05/22/2012US8183798 Variable light control system and method using momentary circuit interrupt
05/22/2012US8183715 Reverse current preventing circuit and power source switching apparatus
05/22/2012US8183713 System and method of providing power using switching circuits
05/22/2012US8183712 Method and system for organizing and optimizing electricity consumption
05/22/2012US8183711 Power extraction from signal sinks
05/18/2012WO2012063800A1 Electrical power control system and method for electrical power control