Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02J - Circuit arrangements or systems for supplying or distributing electric power; Systems for storing electric energy › 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)
09/2008
09/10/2008CN201113449Y Device for intelligent switching 690V electric power capacitor
09/10/2008CN201113448Y Optical coupler triggered two-channel thyristor switch controlled three-loop reactive compensator
09/10/2008CN201113447Y Integrated intelligent reactive compensator
09/10/2008CN201113446Y Microelectron type low pressure reactive-load compensation centralized control equipment
09/10/2008CN201113445Y Submerged arc furnace low pressure reactive-load compensation special equipment
09/10/2008CN201113444Y High magnetism current compensation power-saving device
09/10/2008CN201113443Y Pure inductive zero sequence filter
09/10/2008CN201113442Y Harmonic harnessing apparatus possessing reactive-load compensation
09/10/2008CN201113441Y Passive dynamic response harmonic harnessing apparatus
09/10/2008CN201113440Y Non- three phase symmetrically power supplied non- industrial frequency amount harnessing equipment
09/10/2008CN201113439Y Large power frequency converter power frequency and variable frequency automatic switching device
09/10/2008CN201113438Y Integrated power save protector constituted by four types of electricity economizer
09/10/2008CN201113437Y Integrated power save protector constituted by four types of electricity economizer
09/10/2008CN201113436Y Integrated power save protector constituted by four types of electricity economizer
09/10/2008CN201113435Y Integrated power save protector constituted by four types of electricity economizer
09/10/2008CN201113434Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113433Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113432Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113431Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113430Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113429Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113428Y Integrated power save protector constituted by three types of electricity economizer
09/10/2008CN201113403Y Elevator large power electronic energy-saving apparatus
09/10/2008CN201113364Y Cable flow equalizing voltage-free adjusting device
09/10/2008CN101262145A Uninterruptible power supply, connected to a grid
09/10/2008CN101262134A Power transmission and parallel network system for large solar power generation system
09/10/2008CN101262133A PWM switch control method and device for three-level PFC circuit
09/10/2008CN101262132A A TCR static passive compensation device with T active power filter structure
09/10/2008CN101262131A A mixed active power filter with online adjustable controller parameter
09/10/2008CN101261896A A novel superconductive controllable reactor
09/10/2008CN101259829A Light rail vehicle auxiliary inverse power supply parallel device and control method thereof
09/10/2008CN100418284C Method for realizing composite power system stabilizer
09/09/2008US7423546 Device, system and method for monitoring a household electric appliance
09/09/2008US7423413 Power supply for a load control device
09/09/2008US7423354 Storage system
09/09/2008CA2350987C System with choke in parallel with a/c line for load conditioning
09/04/2008WO2008084398A3 Method for measuring the mains frequency, and electrical applicance that implements said method
09/04/2008US20080215263 Methods, systems, circuits and computer program products for electrical service demand management
09/04/2008US20080212343 Inverter based storage in dynamic distribution systems including distributed energy resources
09/04/2008US20080212342 Control Method for Direct-Current Transmission
09/04/2008US20080211508 Load Bank
09/04/2008US20080211312 Multiplexed direct current regulation output circuit having balance control circuit
09/04/2008US20080211305 Circuit structure for driving a plurality of cold cathode fluorescent lamps
09/04/2008US20080211303 Interface circuit
09/04/2008US20080211237 Electrical power supply for an aircraft
09/04/2008DE102007010392A1 Fuel cell installation for production and network supply of electricity, has alternate load connected by switch or output controller in case of power failure, in order to be used in fuel cell produced electricity
09/03/2008EP1965483A1 Circuit for connecting an energy generation unit to the power grid
09/03/2008EP1964233A1 A system for producing electric power from renewable sources and a control method thereof
09/03/2008EP1964232A1 Hvdc system
09/03/2008CN101258671A Equipment used for transferring electric energy
09/03/2008CN101258670A Equipment used for transferring electric energy
09/03/2008CN101257275A Single feed synchronous wind-driven generator group
09/03/2008CN101257222A Mobile area burst stop current failure emergency electric power safeguard system
09/03/2008CN101257215A Three-phase four-wire photovoltaic parallel network generating system
09/03/2008CN101257214A Large-sized variable speed permanent magnetism wind power generation system
09/03/2008CN101257213A Reactive-load compensation method for high capacity high electric impedance distributing transformator attrition experiment
09/03/2008CN101257209A Islet operation detecting method of photovoltaic parallel network generating system
09/03/2008CN101256550A Parallelization estimation system for complex electric network phase synchronization
09/03/2008CN101256396A Intelligent control circuit of electro-heat water boiler
09/03/2008CN100416996C Power factor correction circuit adopting coupled induction
09/03/2008CN100416979C Auxiliary power supply and method for providing auxiliary power supply
09/03/2008CN100416972C System for providing assured power to a critical load
09/03/2008CN100416970C Variable-speed constant-frequency doubly-fed generator system and its parallel network controlling method
09/03/2008CN100416969C Power supply system for island networks
09/03/2008CN100416968C Capacitor switching and monitoring system based on single chip microcomputer and configuration
09/03/2008CN100416967C Electric wire netting arc extinguishing system
09/03/2008CN100416443C Formula based programmable voltage wattless automatic control device
09/02/2008US7420826 Parallel inverters and controlling method thereof
09/02/2008US7420354 Method and apparatus for controlling power drawn from an energy converter
09/02/2008US7420293 Electrical appliance energy consumption control methods and electrical energy consumption systems
08/2008
08/28/2008WO2008103059A1 Flux control system for active voltage conditioning
08/28/2008WO2008102542A1 Power generating device and method for operating the same
08/28/2008WO2008031587A3 Drive energy supply in rail vehicles
08/28/2008US20080205093 Apparatus for Electrical Power Transmission
08/28/2008US20080205092 Inverter and programming device thereof
08/28/2008DE112006000329T5 Versatzkorrektur bei einem Rückkopplungssystem für einen spannungsgesteuerten Oszillator Offset correction in a feedback system for a voltage controlled oscillator
08/28/2008DE102007008243A1 Protective device parameterization method for ship electrical system, involves transmitting value to protective device for parameterization of protective device, via communication connection, and setting parameter to preset value
08/27/2008EP1961104A1 Converter system comprising converter modules that can be plugged together
08/27/2008EP1960260A1 Hybrid propulsion system for a watercraft
08/27/2008EP1633030B1 Generator system
08/27/2008CN201107679Y Micro computer controlled domestic electricity saving means
08/27/2008CN101252321A Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation
08/27/2008CN101252283A Medium voltage system inductive dynamic reactive-load adjusting device
08/27/2008CN101252282A Three-phase four-wire system dynamic reactive-load generator circuit
08/27/2008CN101252281A Method and system for testing electric voltage reactive-load integrated control functions
08/27/2008CN101252280A On-line evaluating method of urban network max power supply capability
08/27/2008CN101252277A Startup method of idle load long line
08/27/2008CN100414811C Power supply apparatus
08/27/2008CN100414807C Current-sharing control method and system for parallel modular inverse power supply
08/27/2008CN100414806C On-the-spot surge-free reactive compensator for motor
08/27/2008CN100414805C Solid synchronous voltage source for filtering
08/27/2008CN100414470C Stationary reactive compensator monitoring system up position machine software layout method and graphic interface structure
08/26/2008US7418428 System and method for controlling delivering of a commodity
08/26/2008US7418315 Power generation system
08/26/2008US7417339 Fast transition power supply
08/26/2008US7417337 Method and system for facilitating no-break power transfer
08/26/2008US7417336 Combination current hysteresis and voltage hysteresis control for a power converter
08/21/2008WO2008098370A1 Generator power plant protection system and method
08/21/2008WO2008032225A3 Refrigeration monitor unit
08/21/2008US20080197709 Cogeneration system
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