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)
09/2010
09/30/2010WO2010108928A1 Method and device for alternating use of frequency converters in a wind power plant
09/30/2010WO2010066945A3 Fuel cell device and method for feeding electrical current to electrical network
09/30/2010US20100246101 System and method for altering a user interface of a power device
09/30/2010US20100244574 Charging device, charging system and charging method
09/30/2010US20100244573 Hybrid power delivery system and method
09/30/2010US20100244571 System and method for changing power states of a power device
09/30/2010US20100244563 Under frequency/under voltage detection in a demand response unit
09/30/2010DE202010005543U1 Stromtankstelle Charging Station
09/30/2010DE102009012786A1 Energy supplying method for e.g. proximity sensor used for building automation, involves selecting frequency of base-high frequency-alternating current voltage so that carrier impedance is increased using skin effects and/or self induction
09/30/2010DE102008057563A1 Verfahren und Vorrichtung zum netzkonformen Betreiben einer Mehrzahl von dezentralen mit Verbrauchern/Erzeugern von elektrischer Energie versehenen und an ein elektrisches Niederspannungsnetz angeschlossenen Einheit Method and apparatus for grid-compliant operating a plurality of distributed with consumers / producers of electricity provided and connected to an electrical low voltage power unit
09/30/2010CA2756666A1 Under frequency/under voltage detection in a demand response unit
09/30/2010CA2754643A1 Method for operating a wind turbine
09/29/2010EP2234265A1 Power conversion apparatus, power conditioner, and power generation system
09/29/2010EP2234264A1 Power conditioner and solar photovoltaic power generation system
09/29/2010EP2234237A1 Method for controlling single-phase DC/AC converters and converter arrangement
09/29/2010EP2233737A1 Wind farm
09/29/2010EP2232690A1 Parallel connected inverters
09/29/2010EP2232689A1 Distributed energy conversion systems
09/29/2010EP2232667A1 Method, system and device for controlling wind power plants
09/29/2010EP2232666A1 Harmonic filter with integrated power factor correction
09/29/2010CN201594749U Alternating current motor synchronization grid-connected switching device
09/29/2010CN201594748U Wind energy grid-tied controller
09/29/2010CN201594747U Testing device for simulated operation of marine power management system
09/29/2010CN201594746U Series-output-based electric energy feedback type electronic load
09/29/2010CN201594745U Three-phase current balancer
09/29/2010CN201594744U Intelligent low voltage tune filtering power capacitor
09/29/2010CN201594743U Low-voltage reactive power compensation device
09/29/2010CN201594742U Rapid discharger of low-voltage parallel capacitor
09/29/2010CN201594741U Fast capacitive contactless switch
09/29/2010CN201594740U Encoding and decoding board of valve-base electronic unit
09/29/2010CN201594739U Outdoor full numerical control reactive power compensation device for electric distribution network
09/29/2010CN201594738U Low-voltage dynamic reactive power compensation device for submerged arc furnaces
09/29/2010CN201594737U Power supply filtering plate
09/29/2010CN201594732U Lightning-protection anti-interference filter
09/29/2010CN1942842B Dynamic reactive compensation system and method
09/29/2010CN1893755B Device for equalizing discharge lamp currents in circuits, and system and method therefor
09/29/2010CN101849337A Method and device for determining load flow in an electrical supply grid
09/29/2010CN101847964A Digital sinusoidal voltage amplitude-frequency coherent transducer
09/29/2010CN101847891A Method for monitoring distributed power supply network incorporation in distribution network terminal
09/29/2010CN101847878A Connected grid wind-light complementation control inverting device
09/29/2010CN101847877A Frequency conversion control system of double-fed asynchronous wind power generator
09/29/2010CN101847876A Three-phase photovoltaic grid connected inverter system
09/29/2010CN101847875A Power compensation method for unbalanced direct power control of voltage controlled grid-connected inverter
09/29/2010CN101847874A Wattless current tracking method of static var compensator based on power balance
09/29/2010CN101847873A Novel nonlinear control method for active filter
09/29/2010CN101847872A Two-region interconnected electric power system alternating current interconnection tie power fluctuation peak calculating method
09/29/2010CN101847871A Load flow calculation solvability judging method of node type extension
09/29/2010CN101847870A Wiring method and unit of communication power supply compatible to various AC input modes
09/29/2010CN101847842A Low-voltage sectionalized load transfer device of power system
09/29/2010CN101846041A Direct-current excitation synchronous wind generating set
09/29/2010CN101413472B Free style electric generating apparatus of river water stream
09/29/2010CN101345500B Photovoltaic power generation system with grid-connected generation, independent power generation and UPS function
09/29/2010CN101123352B Rear change converter of wind power generation system and its loop current control method
09/29/2010CN101064431B Method for replacing 10kV distributing transformer with charge
09/28/2010US7804198 Electrical harmonic suppression system and enclosure for the same
09/28/2010US7804196 Multiple input/output power converter and fuel cell vehicle with same
09/28/2010US7804191 Method and system for collective control of lights
09/28/2010US7804190 Method and apparatus for resistive power distribution
09/28/2010US7804189 Efficient DC distribution system, topology, and methods
09/23/2010WO2010106520A2 A preconditioned air unit with variable frequency driving
09/23/2010WO2010105658A1 Method for preventing overvoltages, reactive power compensator, control system and computer program products
09/23/2010WO2010085988A3 Wind turbine with lvrt capabilities
09/23/2010WO2010083164A3 Distribution system analysis using meter data
09/23/2010WO2009136975A3 Method and system for managing a power grid
09/23/2010US20100237703 Photovoltaic power plant with minimized power collection losses
09/23/2010DE102009031179A1 System for producing electricity, is provided with device for generating alternating current, which has switching point connected with alternating power
09/23/2010DE102009011778A1 Energieversorgungssystem Power supply system
09/22/2010EP2230695A2 Photovoltaic greenhouse structure
09/22/2010EP2086102B1 Inverter for converting an electric direct current into an alternating current or an alternating voltage
09/22/2010EP2067230B1 Apparatus for feeding electrical energy into an energy supply system and dc voltage transformer for such an apparatus
09/22/2010EP2047577B1 Method and system of real time management and modulation of electricity consumption
09/22/2010CN201590802U Intelligent power saving device
09/22/2010CN201590777U power supply apparatus from viaduct type solar power station to cultivation garden under the viaduct on coastal beach
09/22/2010CN201590771U Multipurpose large-power controllable power source
09/22/2010CN201590764U Mine hoist high voltage variable frequency power unit with voltage self adaptation
09/22/2010CN201590683U Distributed local control structure of control and protection system of converter station
09/22/2010CN201590666U Synchronization device based on liquid crystal type synchronoscope
09/22/2010CN201590665U Common-mode choke circuit structure applied to energy feedback device and provided with damping resistor
09/22/2010CN201590664U Universal static var compensator three-phase optical fiber isolation triggering system
09/22/2010CN201590302U Self-adjusting reactor
09/22/2010CN101842956A Control method for a universal power condition system
09/22/2010CN101841167A Flyback converter leakage inductance energy absorption feedback circuit of photovoltaic grid-connected inverter
09/22/2010CN101841166A Double DSP control method for photovoltaic grid-connected inverter
09/22/2010CN101841165A Soft switching control method for flyback single-stage photovoltaic grid-connected inverter
09/22/2010CN101841164A Grid-connected system
09/22/2010CN101841163A Grid-connected wind-light combined power generation system and power generation method thereof
09/22/2010CN101841162A Microcomputer-controlled automatic switching system for economic operation of 6kV to 20kV transformers connected in parallel
09/22/2010CN101841161A Power monitoring and energy saving system
09/22/2010CN101841159A Split-phase compensation self-healing type reactive compensation capacitor
09/22/2010CN101841158A 10kV dynamic voltage restorer based on cascade of power units
09/22/2010CN101841157A Intelligent electric power regulator and method for uniformly allocating power thereof
09/22/2010CN101841156A Interlaced hysteresis loop tracking and compensating current generator and control method thereof
09/22/2010CN101841154A Voltage stability margin real-time evaluation and optimum control method after grid major failure
09/22/2010CN101841153A Polyphase source supply circuit, and control circuit and method thereof
09/22/2010CN101840465A Multi-scheme comprehensive evaluation method for automatic low-frequency load reduction of large electric network
09/22/2010CN101839218A Direct-drive wind generating set
09/22/2010CN101837743A Automotive vehicle
09/22/2010CN101526957B Pattern-model integrated version management method applied in power automatization system
09/21/2010US7801794 Efficient electricity system
09/21/2010US7800330 Method for regulating a voltage or a current of an RLC filter, a recording medium and vehicles for this method
1 ... 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 ... 387