Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
06/2013
06/26/2013CN203026953U Low voltage power capacitor device
06/26/2013CN203026952U Star chain-type STATCOM (static synchronous compensator) device with unbalanced current compensation function
06/26/2013CN203026951U Linear triple harmonic blocking circuit in grid-connected power station system
06/26/2013CN203026950U Wall-mounted active filter
06/26/2013CN203026949U Dynamic harmonic wave treating and compensating module
06/26/2013CN203026948U Rack-mounted active filter
06/26/2013CN203026947U Active power filter
06/26/2013CN203026946U Modular active power filter
06/26/2013CN203026945U Energy-saving device for absorbing harmonic waves in power grid
06/26/2013CN203026944U Intelligent motor electricity-saving device
06/26/2013CN203026943U Mixed load power saving device and power supply system
06/26/2013CN203026942U Current tracking equipment of electric network
06/26/2013CN203026928U Separated type intelligent lightening protection system for wireless communication base station
06/26/2013CN203026838U 无功补偿柜 Reactive power compensation cabinet
06/26/2013CN203026333U Multifunctional electric power electronic reactor
06/26/2013CN103181144A Microgrid control system
06/26/2013CN103181070A Voltage control in a direct current power system
06/26/2013CN103181052A Method for stabilizing an electric grid
06/26/2013CN103181051A A method of operating a maximum power point tracker
06/26/2013CN103181050A Inductive power transfer pick up circuits
06/26/2013CN103181048A Voltage balancing of symmetric hvdc monopole transmission lines after earth faults
06/26/2013CN103180164A Dispatching mobile energy resources to respond to electric power grid conditions
06/26/2013CN103179012A FlexRay network node adopting iCoupler magnetic isolation protecting measures
06/26/2013CN103178766A Novel single-phase magnetically controlled reactor
06/26/2013CN103178765A Magnetically controlled reactor trigger control device based on TC797A
06/26/2013CN103178756A Intelligent control method capable of reducing higher harmonics for pumping unit
06/26/2013CN103178705A Method and device for controlling power-factor correction circuit
06/26/2013CN103178620A Mobile photovoltaic power generation and off-peak electricity energy storage control system for lithium batteries
06/26/2013CN103178614A System and method of controlling operation of electric device
06/26/2013CN103178598A Single phase redundant power supply systems for reducing phase current imbalances
06/26/2013CN103178552A Energy-saving method for distributing load for thermal power generating units by combining dynamic unit combination with equation incremental rate
06/26/2013CN103178551A Offshore oilfield group power grid power optimization control method
06/26/2013CN103178550A Three-phase swarm micro-inverter system with cluster adjuster and control method
06/26/2013CN103178549A Control system and control method for photovoltaic auxiliary grid-connected power generation
06/26/2013CN103178548A Symmetrical fault ride-through control method of double-fed wind generator set
06/26/2013CN103178547A Micro-network system with two-way inverter, and operating method of micro-network system
06/26/2013CN103178546A Low voltage generator used for low voltage ride through testing and voltage control method of low voltage generator
06/26/2013CN103178545A Power grid current harmonic complementary circuit and control method for photovoltaic grid-connected inverter
06/26/2013CN103178544A Start and stop control method for parallelly-connected multi-unit photovoltaic grid-connected inverter system
06/26/2013CN103178543A Double-fed wind generation set high-voltage penetration method capable of realizing inactive support
06/26/2013CN103178542A Distributed power grid-connection interface system and control method thereof
06/26/2013CN103178541A Control method of distributed grid-connected photovoltaic power generation devices and energy storage devices
06/26/2013CN103178540A Microgrid and ceaseless microgrid-connecting method thereof
06/26/2013CN103178539A Direct current voltage deviation slope control method for multi-end flexible direct current power transmission system
06/26/2013CN103178538A Wind power fluctuation suppression method of hybrid energy storage wind power generation system
06/26/2013CN103178537A Coordinated control system and coordinated control method based on feeder line control error
06/26/2013CN103178536A Distribution network energy storage device locating and sizing method based on supply storage capacity
06/26/2013CN103178535A Online prevention and control method for low-frequency oscillation of electric power system on basis of two types of mechanisms
06/26/2013CN103178534A Calculating method for prevention and control strategy of small interference stabilization
06/26/2013CN103178533A Controlling method and controller for variable participation frequency of temperature control load
06/26/2013CN103178532A Identification method for oscillation influence of generator control device on electric system
06/26/2013CN103178531A Active power transfer type intelligent combined capacitor
06/26/2013CN103178530A Intelligent high-voltage thyristor switched capacitor (TSC) reactive compensation device
06/26/2013CN103178529A Phase-splitting control method and device of magnetic control type quick response dynamic reactive power compensation system
06/26/2013CN103178528A Capacitor compensation cabinet with isolated busbar chamber
06/26/2013CN103178527A Voltage deviation adjustor
06/26/2013CN103178526A Composite filter
06/26/2013CN103178525A Method for rapidly retraining harmonic oscillation of electric power system
06/26/2013CN103178524A Digital filter used for active power filter
06/26/2013CN103178523A Large-current power supply loop
06/26/2013CN103178522A Network voltage stability and continuity load flow calculation method considering characteristics of distributed generation
06/26/2013CN103178521A Method, for analyzing power system power oscillation disturbance source, based on SCADA (supervisory control and data acquisition) historical data search
06/26/2013CN103178520A Method, for monitoring power system power oscillation in real time, based on SCADA (supervisory control and data acquisition) data
06/26/2013CN103178519A Method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data
06/26/2013CN103178518A Process for evaluating transient stability of electric power system according to trace and trace sensitivity
06/26/2013CN103178517A Multilevel topological analysis method for power system
06/26/2013CN103178516A Node merge method based dynamic network topology analysis method
06/26/2013CN103178515A Method for determining a voltage bounding range
06/26/2013CN103178514A Control method for controlled reactor to strengthen the stability of power grid
06/26/2013CN103176141A Power source burn-in test and energy feedback system for motors
06/26/2013CN102355006B Joint wind-solar-storage joint grid-connected power generation coordination control method
06/26/2013CN102290829B Full-system large-scale wind power control method with low generating cost
06/26/2013CN102222936B Start-stop control method and system for grinder set of grid-connected generator
06/26/2013CN102195463B Method and system for starting network-side converter of full-power wind generating set
06/26/2013CN102130606B Multifunctional control device of wind power generator based on integrated gate commutated thyristor
06/26/2013CN101839218B Direct-drive wind generating set
06/26/2013CN101837743B Automotive vehicle
06/25/2013US8471534 Fault ride through switch for power generation system
06/25/2013US8471526 Protection device for secondary batteries, and battery pack and electronic equipment employing same
06/25/2013US8471492 Wireless adaptation of lighting power supply
06/25/2013US8471407 Spring-powered emergency electrical supply
06/25/2013US8471403 Power supply arrangement of an elevator
06/25/2013CA2743480C Improved dc bus regulator
06/25/2013CA2697236C Wind turbine generator
06/21/2013CA2799366A1 Method of controlling reactive power in a wind farm
06/20/2013WO2013090670A1 Methods and systems for operating a power converter
06/20/2013WO2013090587A1 Methods and systems for controlling a power conversion device
06/20/2013WO2013088877A1 Power demand amount calculation system, power demand amount calculation method, power demand amount calculation apparatus, program, and recording medium
06/20/2013WO2013088844A1 Power supply tap and power control system
06/20/2013WO2013088799A1 Power supply system and power conditioner for charging and discharging
06/20/2013WO2013088798A1 Electric power supply system
06/20/2013WO2013088611A1 Distributed power generation system and method for controlling distributed power generation system
06/20/2013WO2013088584A1 Display terminal, power control system, and display method
06/20/2013WO2013088573A1 Method for controlling electric power leveling, electric power leveling control device, and program
06/20/2013WO2013088464A1 Power consumption prediction device, vehicle control device, vehicle, power consumption prediction method, and vehicle control method
06/20/2013WO2013088238A2 Inductive power transfer system and method
06/20/2013WO2013087122A1 Method for generating a signal indicating an oscillation in an electrical energy supply network
06/20/2013WO2013087110A1 Converter in delta configuration
06/20/2013WO2013087085A1 Method for active control of frequency and voltage in a power supply grid with decentralized power supply systems
06/20/2013WO2013041484A3 Method and device for detecting isolated operation of power generation installations