Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
03/2011
03/03/2011US20110049990 Grid synchronisation
03/03/2011US20110049987 Power tap, terminal apparatus and communication system
03/03/2011US20110049984 Power-consumption control apparatus and method for smart meter
03/03/2011US20110049983 Power Strip System
03/03/2011US20110049981 Electric Shock Proof Socket Circuit
03/03/2011US20110049980 System and method for allocating power to loads
03/03/2011DE102009036002A1 Vorrichtung zur Kompensation von in Stromverläufen auftretenden Oberschwingungen in einem Hochspannungsnetz Device for compensating current waveforms occurring in harmonics in a high voltage network
03/03/2011DE102009028954A1 Electrical line filter for coupling household appliance with electrical supply network, has phase conductor and neutral conductor, where alternating voltage of supply network is supplied between phase conductor and neutral conductor
03/03/2011CA2772160A1 Electrical network of an aircraft and method of operation of the electrical network
03/02/2011EP2290803A1 Systems, methods, and apparatus for operating a power converter
03/02/2011EP2290797A2 Method of converting a DC voltage of a DC source, in particular of a photovoltaic DC source, in an AC voltage
03/02/2011EP2290779A1 Power supply/demand control device and power supply/demand control method
03/02/2011EP2290234A2 Method for operating a wind turbine during a disturbance in the grid
03/02/2011EP2289163A1 A voltage source converter
03/02/2011EP2289156A1 A plant for transmitting electric power
03/02/2011EP2289145A1 Regulation method for a high voltage dc transmission plant with dc link and self-commutated inverters
03/02/2011EP2289144A1 Method for production of an oscillating signal and electrical protection - or measurement instrument having an oscillation identification device
03/02/2011EP2289143A1 Impedance correction
03/02/2011EP2289142A1 Harmonic compensation circuit and method for an led light unit
03/02/2011CN201754510U Novel dynamic real-time low-pressure reactive power compensation device
03/02/2011CN201754509U Intelligent low-voltage reactive compensation device
03/02/2011CN201754508U 触发保护器 Trigger protection
03/02/2011CN201753664U Wind, light, heat energies complementary type intelligent power generation system
03/02/2011CN201753653U Variable-speed hydroelectric generator unit based on power split and confluence
03/02/2011CN201753029U Split-phase-free through power supply device for electrified railway
03/02/2011CN101982918A Direct driving wind power generation system based on double SVPWM current mode convertor and control method thereof
03/02/2011CN101982917A Calculation method of available transmission capacity for power grid scheduling
03/02/2011CN101694942B Maximum power tracing method
03/02/2011CN101673313B Photovoltaic power station mathematical modeling method for transient/dynamic analysis of power system
03/02/2011CN101420127B Harmonic treating apparatus having passive compensation
03/02/2011CN101345420B Demand control unit, predicting method and program of consumed electric power
03/02/2011CN101171195B 电梯系统 Elevator system
03/01/2011US7898112 Apparatuses and methods to connect power sources to an electric power system
03/01/2011US7898111 Power supply methods and systems
03/01/2011US7898104 Apparatus and method for dynamically balancing loading of a polyphase circuit
02/2011
02/24/2011WO2011022390A2 Energy storage systems and associated methods
02/24/2011WO2011022265A1 Ac connected modules with line frequency or voltage variation pattern for energy control
02/24/2011WO2011022253A2 Context-aware smart home energy manager
02/24/2011WO2011021941A1 Method and device for supply of electric power to an installation at sea
02/24/2011WO2011020831A2 Electrical charging device
02/24/2011WO2011020466A2 Power station regulating system
02/24/2011WO2011020303A1 Switch off breaker, switch on-off breaker, switch on-off system, and switch off method for ultra-high voltage alternating current transmission line
02/24/2011WO2011020302A1 Device for inhibiting harmonic amplification on the third winding side of extra-high voltage /ultra-high voltage transformer
02/24/2011WO2010122273A3 System for managing electric energy using inverters
02/24/2011US20110043952 Device for the prevention of serious faults in electrical mains supply networks
02/24/2011US20110043045 Systems and methods for asynchronous sampling data conversion
02/24/2011US20110043039 Universal irrigation controller power supply
02/24/2011US20110043037 Nanostructured high surface area electrodes for energy storage devices
02/24/2011US20110043035 Apparatus and methods for controlling light fixtures and electrical appliances
02/24/2011US20110043034 Extension cord with wireless timing function
02/24/2011DE202010015217U1 Steuereinheit zum kombinierten Betrieb von Photovoltaikanlage und Wärmepumpe Control unit for combined operation of photovoltaic system and heat pump
02/24/2011DE102009038033A1 Elektrische Ladevorrichtung Electrically charging apparatus
02/24/2011CA2770747A1 Energy storage systems and associated methods
02/24/2011CA2769622A1 Electrical charging apparatus
02/23/2011EP2288018A2 Method for operating an energy-producing device, in particular a wind energy plant and wind energy plant
02/23/2011EP2288016A1 Wind energy assembly with adjustable speed characteristics curve
02/23/2011EP2287991A1 Optimizing power consumption of data centres
02/23/2011EP2286499A1 An electrical generator network and a local electrical system
02/23/2011CN201752076U V2G intelligent charging and discharging device
02/23/2011CN201752075U Charge-discharge and energy storage circuit
02/23/2011CN201752074U Domestic solar energy power-supply system device
02/23/2011CN201752073U Device for increasing creep distance of post insulator
02/23/2011CN201752072U High-pass filter
02/23/2011CN101981779A System stabilization device, method, and wind-power generation system
02/23/2011CN101980436A Grid-connected photovoltaic inverter device and control method for improving conversion efficiency thereof
02/23/2011CN101980409A Grid-connected photovoltaic inverter
02/22/2011US7894946 Apparatus for managing an energy consuming load by compiling load state data from other loads
02/22/2011US7893563 Electrical distribution feeder system and method of operation
02/17/2011WO2011019550A2 System and method for associating a load demand with a variable power generation
02/17/2011WO2011018848A1 Current output system and current output control method
02/17/2011US20110040421 Installation for the production and storage of renewable energy
02/17/2011DE102009050042A1 Ladestation für Elektrofahrzeuge mit Netzstabilisierung Charging station for electric vehicles with power stabilization
02/17/2011DE102009036816A1 Steuerung von Ladestationen Control of charging stations
02/17/2011DE102009028500A1 Method for operating rechargeable energy storage i.e. accumulator, of e.g. hybrid vehicle, involves providing control device for selecting operating modes from different operation modes of rechargeable energy storage
02/17/2011DE102009017157B4 Verfahren zur Versorgung eines elektrischen Schiffs-Bordnetzes mit Fremdenergie, Schiff mit einer derartigen Fremdenenergieversorgung sowie Nachrüstverfahren hierfür Method for supplying an electric boat electrical system with external energy, ship with such a stranger energy supply and retrofit method therefor
02/17/2011CA2715524A1 Solar panel with inverter and connector therefor
02/16/2011EP2284974A1 Method for operating and regulating a wind energy assembly and method for providing control power with wind energy assembly
02/16/2011EP2284639A1 Power converter assembly for solar power plant
02/16/2011EP2284382A2 Power supply system
02/16/2011EP2283400A2 Method for operating a modular automation device
02/16/2011CN201750232U Mobile intelligent electric line voltage regulating device
02/16/2011CN201750218U Automatic generation control system for wind power generation
02/16/2011CN201750165U Power control system for power plant
02/16/2011CN201750164U Multi-converter based wind generator set
02/16/2011CN201750163U Three-phase energy saving feedback load
02/16/2011CN201750162U Low-voltage through simulation system of wind power generating system
02/16/2011CN201750161U Solar energy comprehensive grid-connected system
02/16/2011CN201750160U Solar energy power supply grid-connected integrated device
02/16/2011CN201750159U Storage battery power conditioning system
02/16/2011CN201750158U Common capacitance screen signal switching device
02/16/2011CN201750157U Dynamic bifurcation control system based on DSP
02/16/2011CN201750156U Low voltage compensation control device of submerged-arc furnace
02/16/2011CN201750155U No-inrush-current high-speed tracking reactive power compensator
02/16/2011CN201750154U High-voltage dynamic reactive power compensation intelligent phase selection switching controller
02/16/2011CN201750153U Dynamic reactive compensation filter circuit
02/16/2011CN201750152U Power distribution unit for improving active power of series electric tracer heating system
02/16/2011CN201750151U Active power filter device
02/16/2011CN201750150U Centralized power supply system of computer room
02/16/2011CN201750149U System for controlling loading capacity of outward service channel in power network supply area
02/16/2011CN201750148U Saddle node bifurcation controller of power system based on linear feedback control