Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
04/2011
04/26/2011US7932621 Method and apparatus for an integrated wind-solar energy system utilizing an existing wind turbine infrastructure
04/21/2011WO2011046453A1 Inductively controlled series resonant ac power transfer
04/21/2011WO2011045447A1 Solar generation method and system
04/21/2011WO2011045184A1 District heat prediction
04/21/2011WO2011018267A3 Charging station for electric vehicles having network stabilization
04/21/2011WO2010147949A3 Supplying grid ancillary services using controllable loads
04/21/2011US20110093129 Energy storage at elevated voltage in a radar level gauge
04/21/2011US20110089868 Harmonic compensation circuit and method for an led light unit
04/21/2011US20110089852 Addressable LED Light String
04/21/2011US20110089767 Arrangement related to offshore cable system
04/21/2011US20110089766 Apparatus for phase rotation for a three-phase AC circuit
04/21/2011US20110089765 Power converting apparatus
04/21/2011US20110089759 Home Power Supply System
04/21/2011DE102009045242A1 Verfahren zum Betreiben eines Haushaltsgeräts und Haushaltsgerät zur Durchführung des Verfahrens A method of operating a domestic appliance and home appliance for performing the method
04/21/2011DE102008046606B4 Photovoltaikanlage Photovoltaic system
04/21/2011CA2777873A1 Solar generation method and system
04/20/2011EP2312744A1 Power distribution systems
04/20/2011EP2312720A2 Device for supplying voltage to a work system
04/20/2011EP2312719A1 Investigating timing reliability in relation to control of a power transmission system
04/20/2011EP2312718A2 Electrical equipment management system
04/20/2011EP2311165A1 Low voltage ride through
04/20/2011EP2311164A1 Method and system for controlling a wind power plant comprising a number of wind turbine generators
04/20/2011EP2203965B1 Electrical switchgear, particularly for connecting generators and thrusters in dynamically positioned vessels
04/20/2011EP2151033B1 Power control system
04/20/2011EP1512214B1 Current-compensated choke and circuit arrangement comprising the current-compensated choke
04/20/2011CN201805274U Multifunctional intelligent TTU controller
04/20/2011CN201805239U Device of intelligent switching transformer bank
04/20/2011CN201805238U Intelligent control system for photovoltaic grid-connected power plant
04/20/2011CN201805237U High voltage frequency conversion electricity transmission distributing and adjusting device for wind power generation
04/20/2011CN201805236U Series type LVRT (low voltage ride through) control device of wind generating set
04/20/2011CN201805235U Extra/ultra-high voltage series capacitor compensating device having current transfer branch circuit
04/20/2011CN201805234U Comprehensive voltage reactive power control system with harmonic suppression function
04/20/2011CN201805233U High-voltage SVC (static var compensator) control panel based on DSP (digital signal processor)
04/20/2011CN201805232U Superconductive controllable series capacitance compensator
04/20/2011CN201805231U 动态无功补偿装置 Dynamic reactive power compensation device
04/20/2011CN201805230U Power line capacitance compensation circuit controlled by thyristor
04/20/2011CN201805229U Photoelectric trigger device based on high-pressure thyristor switched capacitor
04/20/2011CN201805228U Special low-voltage active power filter for tobacco industry
04/20/2011CN201805227U Power energy-saving device
04/20/2011CN201805226U Power saving device
04/20/2011CN201805225U IGBT control-based stepless adjusting arc suppression coil
04/20/2011CN201802564U Half direct-driving and full-power wind power generating device
04/20/2011CN201802563U Full-power squirrel-cage set wind power generation apparatus
04/20/2011CN201801247U Energy feedback system of elevator
04/20/2011CN102026447A Daylight lamp constant current driving method and driving circuit thereof
04/20/2011CN102025182A Modular charging/discharging system of power battery pack of multifunctional electromobile
04/20/2011CN102025167A Switch power supply energy-saving aging system
04/20/2011CN102025166A Power-generating interconnected topological structure of transformerless water-turbine generator
04/20/2011CN102025165A Transformerless battery energy storing topological structure
04/20/2011CN102025164A Automatic grid connection system for wind turbine asynchronous generator
04/20/2011CN102025163A Adjusting method for dynamic reactive compensation controller
04/20/2011CN102025162A Three-level-half-bridge-based high speed railway power regulator
04/20/2011CN102025161A Five-level dual-buck parallel active power filter (APF) and dual-frequency half-wave control method thereof
04/20/2011CN102025160A Intelligent combined power capacitor
04/20/2011CN102025159A Comprehensive evaluation method and system of stability of quiescent voltage
04/20/2011CN102025158A Directly-coupled series compensation device and compensation method thereof
04/20/2011CN102025157A Command current extraction method and compensating current generation method for active power filter
04/20/2011CN102025156A Transformer rectifying system of reversible cold rolling mill
04/20/2011CN102025155A DC (direct current) distribution-based microgrid system
04/20/2011CN102025154A Intelligent power consumption management system
04/20/2011CN102025153A Method for accurately calculating maximum power supply capacity of medium voltage distribution network
04/20/2011CN102025152A Electric energy quality evaluation method of electrified railway accessed power system
04/20/2011CN102025151A Method for acquiring power flow cross section data of online operation state of power grid
04/20/2011CN102025150A Method and system for demand response in a distribution network
04/20/2011CN102025149A 能量管理系统及能量管理方法 Energy management systems and energy management
04/20/2011CN102025148A Power-line network system with data relay function
04/20/2011CN102025147A Self-adaptive low-voltage power saving system
04/20/2011CN102022283A Double power generator combined wind power generator unit driven directly by ultra-large wind wheel
04/20/2011CN102022275A Wind generating set with bottom driving
04/20/2011CN102022272A Intelligent gradient stable high-quality and high-power wind generating set
04/20/2011CN101621202B Controller of high-voltage chain type static and synchronous compensator
04/20/2011CN101572440B Power grid code analysis and test method
04/20/2011CN101567564B Voltage and power regulator based on the composite energy storage of storage battery and super capacitor
04/20/2011CN101534010B Method for solving the local boundary of cut-set voltage stability regions on the basis of perturbation
04/20/2011CN101465545B Detection method for hyposynchronous resonance of series complement system
04/20/2011CN101436780B Self-healing control method for urban power distribution network
04/20/2011CN101237148B Low-frequency surge detection and protection method for power system
04/20/2011CA2717953A1 String and system employing direct current electrical generating modules and a number of string protectors
04/19/2011US7929322 Voltage sag generator device
04/19/2011US7928715 Switching regulator
04/19/2011US7928604 Universal system for controlling automated transfer switches in response to external stimuli
04/19/2011US7928600 Power source device and magnetic resonance imaging apparatus using the same
04/14/2011WO2011043967A2 Method and apparatus of stored energy management in battery powered vehicles
04/14/2011WO2011043891A2 System and apparatus for interconnecting an array of power generating assemblies
04/14/2011WO2011042943A1 Specification selection device of power storage system and specification selection method of power storage system
04/14/2011WO2011042787A1 Electric power distribution system
04/14/2011WO2011042786A1 Energy storage system
04/14/2011WO2011042785A1 Electric power management system
04/14/2011WO2011042781A1 Power supply system
04/14/2011WO2011042567A1 Reactive-power-capable inverter
04/14/2011WO2011006796A3 Device for inverting an electric parameter, having a star point reactor
04/14/2011US20110087382 Process for managing and curtailing power demand of appliances and components thereof
04/14/2011US20110084556 System and apparatus for interconnecting an array of power generating assemblies
04/14/2011US20110084551 Photovoltaic system with managed output
04/14/2011DE102009049082A1 Integriertes Energie- und Parkmanagement für Elektrofahrzeuge Integrated Energy and park management for electric vehicles
04/14/2011DE102009048784A1 Verfahren zur Stromversorgung eines Stromverbrauchers A method for supplying power to a power consumer
04/13/2011EP2309639A1 Reactive power-capable inverter
04/13/2011EP2309614A2 Utility-interactive inverter system architecture and method of operation thereof
04/13/2011EP2158671B1 Inverter unit without transformer for thin-film solar panels
04/13/2011CN201797473U Reactive compensation soft start device based on variable reactance