H02J 3 - Circuit arrangements for ac mains or ac distribution networks

Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
10/2011
10/26/2011	CN102227074A Power transmission line deicing antifreeze system
10/26/2011	CN102227053A Intelligent modularized electricity distribution system
10/26/2011	CN101692576B Capacitance compensation switch
10/26/2011	CN101507080B DC filter and voltage source converter station comprising such filter
10/26/2011	CN101359830B Electric power noise wave eliminating circuit, power socket having the circuit and electrical apparatus
10/26/2011	CN101297448B A converter station
10/25/2011	US8046110 Control of active power reserve in a wind-farm
10/25/2011	US8046088 Dependent power supplying apparatus and electronic instrument
10/25/2011	US8044654 Adaptive bias current generator methods and apparatus
10/25/2011	US8044539 Intelligent solar energy collection system
10/25/2011	US8044538 Multi-cellular photovoltaic panel system with DC-DC conversion replicated for groups of cells in series of each panel and photovoltaic panel structure
10/25/2011	US8044536 Powering devices having low and high voltage circuits
10/20/2011	WO2011129223A1 Power converter
10/20/2011	WO2011129188A1 Photovoltaic generation system, power conversion device, and collector box
10/20/2011	WO2011129054A1 Electric-power management system, electric-power management method, and section controller
10/20/2011	WO2011129003A1 Power management control system used in natural energy generating system incorporating storage battery
10/20/2011	WO2011128937A1 Power demanding/supplying system and power demanding/supplying method
10/20/2011	WO2011128508A1 Arrangement and method for reactive power compensation
10/20/2011	WO2011128438A2 Method for inputting power and power input system
10/20/2011	WO2011128344A2 Method of balancing an electrical network comprising several generators, distributors and installations
10/20/2011	WO2011127982A1 Common mode choke for dc transmission lines
10/20/2011	WO2011127980A1 Hybrid 2-level and multilevel hvdc converter
10/20/2011	WO2011092302A3 Electric energy grid connecting system and electric energy transmission system and method
10/20/2011	WO2011060953A3 End-to-end energy management system
10/20/2011	US20110258063 Power generation leveling system and power generation leveling method
10/20/2011	US20110257805 Power Generation Systems
10/20/2011	US20110254375 Server and method for detecting work state of power transformers
10/20/2011	US20110254371 Method and apparatus for controlling distribution of power
10/20/2011	US20110254370 Wireless Annunciator For An Electrical Generator
10/20/2011	US20110254368 Power distribution system and method thereof
10/20/2011	US20110254367 Redundant Power Delivery
10/20/2011	DE202011102525U1 Steuereinheit zur Regelung von Wasserstoffelektrolyse, Wasserstoffspeicherung und Stromerzeugung aus Wasserstoffspeichern am Stromnetz Control unit for controlling hydrogen electrolysis, hydrogen storage and electricity generation from hydrogen storage to the mains
10/20/2011	DE102010027793A1 Verfahren und Vorrichtung zum Ermitteln einer überschüssigen Energiemenge eines elektrischen Energiespeichers eines Fahrzeugs Method and device for detecting an excessive amount of energy of an electric energy storage device of a vehicle
10/20/2011	DE102010015562A1 Power generation method using wind propellers/wind turbine for home, involves installing wind propellers and/or wind turbines that can be turned along vertical and horizontal directions, on roof and outer walls of house
10/20/2011	DE102010015440A1 Verfahren zur Stromeinspeisung und Stromeinspeisesystem Method for power supply and current feed
10/20/2011	CA2795315A1 Hybrid 2-level and multilevel hvdc converter
10/19/2011	EP2378114A1 Handy terminal for wind power generation apparatus
10/19/2011	EP2377226A2 Fuel cell device and method for feeding electrical current to electrical network
10/19/2011	EP2377225A2 Method and system for testing wind turbine plants
10/19/2011	EP2377224A2 System and apparatus for power transfer to vessels
10/19/2011	EP2377223A1 Power saving system and method
10/19/2011	EP2377222A2 Hybrid distribution network power restoration control
10/19/2011	EP2377221A1 Feeder automation for an electric power distribution system
10/19/2011	EP2377220A2 System, apparatus and method for power transfer to vessels
10/19/2011	EP2133103B1 Programmable electrical sequencer
10/19/2011	CN202014206U Topology circuit of solar photovoltaic inverter
10/19/2011	CN202014105U Low-voltage ride-through device for photovoltaic grid-connected inverter
10/19/2011	CN202014104U Low-voltage cross-over device for wind power generation
10/19/2011	CN202014103U Wind power generation controlling and inverting system
10/19/2011	CN202014102U Capacitance compensation switching switch
10/19/2011	CN202014101U Automatic switching line for sampling signals of capacitance compensating controller
10/19/2011	CN202014100U Dynamic reactive power compensator for photovoltaic power station grid connected inverter
10/19/2011	CN202014099U Intelligent electromechanical integration combination switch
10/19/2011	CN202014098U Special electricity-saving appliance for coating production preparation kettle
10/19/2011	CN202014097U Harmonic wave managing device for substation
10/19/2011	CN202014096U Absorption and compensation device of photovoltaic grid-connected inverter
10/19/2011	CN202014095U Low-voltage active filtering device
10/19/2011	CN202014094U Power transmission line structure of wind power station
10/19/2011	CN202014069U Special-purpose integrated distribution box for intelligent power grid
10/19/2011	CN102224671A Frequency convertor
10/19/2011	CN102224472A Power generation system and method of operating a power generation system
10/19/2011	CN102223126A Variable resistor Crowbar structures for low-voltage ride-through of wind power generation and method for realizing variable resistor Crowbar structures
10/19/2011	CN102223125A Method and device for controlling uninterruptible operation of wind generator system in case of faulted power grid voltage
10/19/2011	CN102223101A Control method for dual-bucking full-bridge grid-connected inverter
10/19/2011	CN102223100A Control method of three-phase grid-connected inverter based on modified proportional resonant regulator
10/19/2011	CN102223037A Novel variable-speed salient-pole synchronous motor and huge rotary frequency converter
10/19/2011	CN102222981A Wind power converter monitoring system and wind power generation system
10/19/2011	CN102222944A High-efficiency wind power generation device
10/19/2011	CN102222939A Grid-connected control method and device by utilizing grid-side converter of doubly-fed wind-driven generator set
10/19/2011	CN102222938A Voltage-frequency comprehensive control method for direct-drive wind generator set
10/19/2011	CN102222937A Photovoltaic grid-connected inverter and grid-connected control method thereof
10/19/2011	CN102222936A Start-stop control method and system for grinder set of grid-connected generator
10/19/2011	CN102222935A Grid-connected full digital monitoring system for controllable high-temperature superconducting magnetic energy storage (SMES) system
10/19/2011	CN102222934A Isolated island detecting method, device and system for photovoltaic grid-connected power generation system
10/19/2011	CN102222933A Network access current control method for single-phase less container load (LCL) filtering grid-connected inverter
10/19/2011	CN102222932A Isolated island detecting device and method based on load characteristic
10/19/2011	CN102222931A Microgrid three-phase grid-connected inverter system and control method thereof
10/19/2011	CN102222930A Intelligent and high efficient wind power farm
10/19/2011	CN102222929A DC (Direct Current) power transmission system with function of unidirectionally transmitting power
10/19/2011	CN102222928A Large-scale centralized energy storage intelligent charge and discharge system for power battery of electric vehicle
10/19/2011	CN102222927A Dynamic voltage restorer based on super-capacitor
10/19/2011	CN102222926A Reactive compensation structure for metallurgical submerged-arc furnace
10/19/2011	CN102222925A Phase current balance method for line current asymmetric compensation of D-STATCOM
10/19/2011	CN102222924A Electric energy adjusting system and electric energy adjuster based on loads of common bus of substation
10/19/2011	CN102222923A Solid relay controlled capacitor compensating device
10/19/2011	CN102222922A STATCOM (static synchronous compensator) control system adopting droop control strategy and control method thereof
10/19/2011	CN102222921A Capacitor clamping-based trilevel railway power regulator
10/19/2011	CN102222920A Reactive compensation control system for electric mining heat furnace
10/19/2011	CN102222919A Power system reactive power optimization method based on improved differential evolution algorithm
10/19/2011	CN102222918A Module group type submerged arc furnace busbar reactive power compensator
10/19/2011	CN102222917A Single-phase boosting device provided with intelligent control compound switch
10/19/2011	CN102222916A Device and method for boosting network voltage at tail end of electrified railway power supply arm
10/19/2011	CN102222915A String additional potential voltage regulation method for sine alternating-current electricity
10/19/2011	CN102222914A Electrical telemechanical host with plant-level automatic power generation function
10/19/2011	CN102222913A Intelligent distribution active filtering device
10/19/2011	CN102222912A Controllable harmonic generation device for test and control method thereof
10/19/2011	CN102222911A Power system interharmonic estimation method based on auto-regression (AR) model and Kalman filtering
10/19/2011	CN102222910A Filtering system
10/19/2011	CN102222909A Method for calculating mixed continuation power flow at voltage stability boundary
10/19/2011	CN102222908A Distribution network reliability estimation method considering prearranged stoppage

1 ... 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 ... 387