| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 09/30/2009 | CN101546913A Multifunctional high-power electronic load and control method thereof |
| 09/30/2009 | CN101546912A Same power network line loss classifying and assessing method |
| 09/30/2009 | CN101546472A Integrated universal simulation test system and implement method for electric network scheduling and electric quantity collection |
| 09/30/2009 | CN100546147C Method for optimizing and allocating capacitor of reactive compensator |
| 09/29/2009 | US7595568 Ignition system for a gas turbine engine |
| 09/29/2009 | US7595567 Thermostat device with line under frequency detection and load shedding capability |
| 09/29/2009 | US7595563 Method of operating a wind power installation and a wind power installation |
| 09/29/2009 | CA2440865C Connecting circuit and method for connecting a generator to the electricity grid making use thereof |
| 09/24/2009 | WO2009116641A1 Power conversion device |
| 09/24/2009 | WO2009115895A1 Arrangement related to offshore cable system |
| 09/24/2009 | WO2009115024A1 A power saving device for alternating current electrical appliances and a manufacturing method thereof |
| 09/24/2009 | WO2009060321A3 Intelligent infrastructure power supply control system |
| 09/24/2009 | US20090236916 Power conditioner |
| 09/24/2009 | US20090236910 Point of use and network control of electrical appliances and method |
| 09/24/2009 | US20090236909 Adaptive Power Strip |
| 09/23/2009 | EP2104216A1 Electric power generating system with a plurality of electric power sources parallely feeding a DC voltage line which supplies power to an AC grid |
| 09/23/2009 | EP2104200A1 Method for controlling a multi-string inverter for photovoltaic systems |
| 09/23/2009 | EP2102959A2 Method for measuring the mains frequency, and electrical applicance that implements said method |
| 09/23/2009 | EP2102958A2 Load balancing arrangement |
| 09/23/2009 | EP2102730A1 Power supply control device |
| 09/23/2009 | EP1802866B1 Wind park with robust reactive power adjustment system and method for the operation thereof |
| 09/23/2009 | EP1269598B1 Distributed internal fault bypass in a modular uninterruptible power supply |
| 09/23/2009 | CN201315492Y Compensation circuit for improving power factor |
| 09/23/2009 | CN201315491Y Intelligent composite switch |
| 09/23/2009 | CN201315490Y 10kV line optimal reactive power compensation control system |
| 09/23/2009 | CN201315489Y Intelligent reactive power compensating distribution box |
| 09/23/2009 | CN201315488Y Power grid harmonic disturbance source identification system |
| 09/23/2009 | CN201315487Y Electrical power saving device |
| 09/23/2009 | CN101542865A Power generating device and method for operating the same |
| 09/23/2009 | CN101542864A Method for operating a wind turbine connected to a utility grid during utility grid disturbance, wind turbine and wind park |
| 09/23/2009 | CN101542863A Method and apparatus for a power line communications test system |
| 09/23/2009 | CN101540582A Motor economic operation controller |
| 09/23/2009 | CN101540511A Novel grid-connected converter system |
| 09/23/2009 | CN101540510A Method for eliminating secondary pulsation interference on middle DC side in two-stage grid-connected system |
| 09/23/2009 | CN101540509A Voltage reactive power control method of substation |
| 09/23/2009 | CN101540508A Reconfigurable device of static var compensation (SVC) and direct-current thawing |
| 09/23/2009 | CN101540507A Compensating three-phase active power factor correcting circuit |
| 09/23/2009 | CN101540506A Novel digital reactive power compensation controller |
| 09/23/2009 | CN101540505A Building method of multistage multi-region interconnected network data model |
| 09/23/2009 | CN101540504A Current analytical device and method on basis of step-length variable neural network |
| 09/23/2009 | CN101540483A Method and device for modular configuration of low-voltage power distribution system |
| 09/23/2009 | CN100544157C Dispersed power supply system |
| 09/23/2009 | CN100544156C Electric voltage idle work regulation switch control method |
| 09/23/2009 | CN100544155C Harmonic based on APF and SVC and reactive-load dynamic state compensating system and frequency-dividing phase-splitting electrical current control method |
| 09/22/2009 | US7592716 Information handling system including a battery that reduces a voltage fluctuation |
| 09/22/2009 | US7592715 Multiple sources of operating power to a load |
| 09/17/2009 | WO2009114334A2 System and method for load sharing in multi-module power supply systems |
| 09/17/2009 | WO2009112605A1 Method of operation of a wind turbine to guarantee primary or secondary regulation in an electric grid |
| 09/17/2009 | WO2009112175A1 Electrical charging and/or discharging device |
| 09/17/2009 | WO2009087275A3 Electric power supply apparatus for use in vessels |
| 09/17/2009 | WO2009063220A3 Active network management |
| 09/17/2009 | WO2009042414A3 Virtual branch load management |
| 09/17/2009 | US20090234600 Load calculation control method and apparatus |
| 09/17/2009 | US20090234510 Method For Controlling A Cluster Of Wind Turbines Connected To A Utility Grid, Method For Planning The Strategy Of A Utility Grid Including A Wind Turbine Cluster Connected To The Grid And Wind Turbine Cluster |
| 09/17/2009 | US20090230928 Connecting a Prime Mover Driven Alternator to a Circuit With an Existing Alternating Current |
| 09/17/2009 | US20090230772 System and method for load sharing in multi-module power supply systems |
| 09/17/2009 | US20090230767 Power supply system, multiple dwelling, and computer program |
| 09/17/2009 | CA2718406A1 Capacitor bank monitor and method of use thereof |
| 09/16/2009 | EP2101392A2 Wind turbine energy storage and frequency control |
| 09/16/2009 | EP2101387A1 Controlling distribution of electrical power |
| 09/16/2009 | EP2101039A1 Continuous operation and power supply of an acid gas reinjection facility |
| 09/16/2009 | CN201312128Y Loss-reducing and electricity-saving automatic switching device for power transformer |
| 09/16/2009 | CN201312127Y Calcium carbide furnace reactive power compensator |
| 09/16/2009 | CN201312126Y Motor compensation electricity-saving control device of textile dust filtering fan motor |
| 09/16/2009 | CN201312125Y Composite power factor compensation harmonic elimination controller |
| 09/16/2009 | CN101534065A Asymmetric direct power control method of grid-connected three-phase voltage source converter |
| 09/16/2009 | CN101534015A Three-phase photovoltaic grid-connected inverting control method and device thereof |
| 09/16/2009 | CN101534014A Power conversion device and power generation conversion system |
| 09/16/2009 | CN101534013A 风轮机能量存储及频率控制 Wind turbine energy storage and frequency control |
| 09/16/2009 | CN101534012A Intelligent integrated comprehensive low-pressure distribution box |
| 09/16/2009 | CN101534011A Control method for distribution network active filtering quiescent reactive compensation |
| 09/16/2009 | CN101534010A Method for solving the local boundary of cut-set voltage stability regions on the basis of perturbation |
| 09/16/2009 | CN101534009A Analysis method for operating characteristics of power-frequency variable directional protection of AC-DC interconnected power grid |
| 09/16/2009 | CN101534008A Method for reducing influence of voltage sag on electric equipment |
| 09/16/2009 | CN101533995A Intelligent ice melting device for electric system |
| 09/16/2009 | CN101533428A Electro-magnetic transient off-line non-real time parallel simulation system and simulation method |
| 09/16/2009 | CN100541999C Power conversion apparatus |
| 09/16/2009 | CN100541968C Power factor compensation method for correcting unbalance in three phases of current |
| 09/16/2009 | CN100541967C Series-parallel isolation passive power filter |
| 09/16/2009 | CN100541966C Network harmonic and flash comprehensive inhibitor |
| 09/16/2009 | CN100541965C Determined 2-layered planning model based transmission network planning method |
| 09/15/2009 | US7589505 Power supply with reliable voltage feedback control independent of any ground voltage difference |
| 09/15/2009 | US7589438 Source phase sensitive transfer method and apparatus |
| 09/15/2009 | US7589435 Reporting power requirements of a powered device |
| 09/15/2009 | US7589299 Electronic power control for cooktop heaters |
| 09/15/2009 | CA2558253C Dynamic reactive compensation system and method |
| 09/15/2009 | CA2397649C Auxiliary electrical power generation system and method of operating same |
| 09/11/2009 | WO2009111355A2 Distributed wind turbine electric generation system |
| 09/11/2009 | WO2009110648A1 Converter for hvdc |
| 09/11/2009 | WO2009109700A2 Vibration dampening arrangement |
| 09/11/2009 | WO2009043318A3 A method of extension of the regulation range of electric power supplied to the electricity grid and an energy system with an extended regulation range |
| 09/11/2009 | WO2009003959A3 Inverter system and control method |
| 09/10/2009 | US20090228154 System and method for monitoring and managing electrical power transmission and distribution networks |
| 09/10/2009 | US20090225483 Electric circuit breaker |
| 09/10/2009 | US20090224769 Multi-Series Battery Control System |
| 09/10/2009 | US20090224607 variable rotor speed wind turbine, wind park, method of transmitting electric power and method of servicing or inspecting a variable rotor speed wind turbine |
| 09/10/2009 | US20090224606 Distributed wind turbine electric generation system |
| 09/10/2009 | US20090224601 Semiconductor device |
| 09/10/2009 | US20090224599 Paralleled hvdc bus electrical power system architecture |
| 09/10/2009 | DE102008012325A1 Einrichtung zum Anschließen einer einphasigen Versorgungsleitung an ein dreiphasiges Versorgungsnetz Means for connecting a single-phase supply line to a three phase supply network |