| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 02/18/2009 | EP2026440A2 Method and device for providing controlling power in the energy supply area of an energy supplier for stabilising the frequency of an electric network |
| 02/18/2009 | EP2025037A1 Temperature controller |
| 02/18/2009 | CN201197131Y Magnetic controlled shunt reactor excitation system |
| 02/18/2009 | CN201197080Y Variable-speed constant-frequency double-feedback wind power generation system |
| 02/18/2009 | CN201197079Y Variable-speed constant-frequency wind generator set based on cage type induction machine |
| 02/18/2009 | CN201197078Y Mixing type static idle work generator |
| 02/18/2009 | CN101369732A Multi-parameter automatic presynchronization control method |
| 02/18/2009 | CN101369731A Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus |
| 02/18/2009 | CN101369730A Zero-pharse harmonic reduction device having protection function of overload |
| 02/18/2009 | CN101369729A Control circuit adopting pulse transformer as composite switching capacitor group |
| 02/18/2009 | CN101369723A Protection system for reconfigurable static reactive-power compensation/DC de-icing composite apparatus |
| 02/18/2009 | CN101368543A Upward flowing air energy power generation apparatus |
| 02/18/2009 | CN100463328C Rotating electromagnetic energy transformation device |
| 02/17/2009 | US7492058 Modular uninterruptible power supply with loadsharing between modules |
| 02/12/2009 | WO2009019306A1 Method for controlling electrical loads in a low-voltage network |
| 02/12/2009 | WO2009019080A2 Motor vehicle electric system with a communication flow inside the electric system |
| 02/12/2009 | WO2009019067A1 Estimating a time offset between stationary clocks |
| 02/12/2009 | WO2008144554A3 Photovoltaic ac inverter mount and interconnect |
| 02/12/2009 | WO2008116929A3 Damping multiple modes of electromagnetic oscillations in power distribution systems |
| 02/12/2009 | US20090039933 System and method |
| 02/12/2009 | US20090039894 Stage-Fused Transformer Loop System and Method of Rapid Diagnosis of Fault Cable or Transformer Failure Within The System |
| 02/12/2009 | DE102007037672A1 Energy distribution method comprises applying renewable energy in electric circuit for producing hydrogen, hydrogenating the hydrogen to produce combustible hydrocarbon and applying hydrocarbon in power plant to produce electric current |
| 02/12/2009 | DE102006062424B4 Verfahren zur Rückspeisung elektrischer Energie von Schienenfahrzeugen Process for the recovery of electrical energy from rail cars |
| 02/11/2009 | EP2023459A1 Power controller and vehicle equipped with power controller |
| 02/11/2009 | EP2023456A1 Estimating a time offset between stationary clocks |
| 02/11/2009 | EP2022154A1 Thyristor controlled series capacitor adapted to damp sub synchronous resonances |
| 02/11/2009 | EP2021205A1 System comprising at least two guideway-related guideway components of a track guideway and a transformer station |
| 02/11/2009 | EP1668756A4 Distributed floating series active impedances for power transmission systems |
| 02/11/2009 | EP1232559B1 Energy conserving motor controller |
| 02/11/2009 | CN201194333Y Solar photovoltaic parallel-in system |
| 02/11/2009 | CN201194332Y Chain type wind electricity generation parallel-in system |
| 02/11/2009 | CN201194331Y Novel electric power filter |
| 02/11/2009 | CN201194079Y Full-power management system for ship power plant |
| 02/11/2009 | CN101364738A Tracing and simulating test method for voltage reactive integrated control system |
| 02/11/2009 | CN101364737A Method capable of on-line detecting and controlling reactive compensating capacitor and reactive compensating controller thereof |
| 02/11/2009 | CN101364736A Series hybrid active electric filter device |
| 02/11/2009 | CN101364735A Experiment method for speed adjusting system load frequency adjustment test of gas turbine electricity generating set |
| 02/11/2009 | CN101364734A Safety protection system for electrical power system |
| 02/11/2009 | CN101364733A Electric power digital integrated management system |
| 02/11/2009 | CN101364732A Large power modularized DC power supply apparatus and control method thereof |
| 02/11/2009 | CN101363885A Method for discriminating voltage instability and load angle instability based on thevenin equivalent |
| 02/11/2009 | CN101363406A Wind power generation system with multi-blower fans connection in parallel |
| 02/11/2009 | CN100461607C Parallel-working sine ware inverter |
| 02/11/2009 | CN100461605C Method and inverter for supplying alternating current to a network |
| 02/11/2009 | CN100461581C Comprehensive control device of rotary electro magnetic electric energy quality |
| 02/11/2009 | CN100461580C A harmonic current prediction method for compensating control delay |
| 02/11/2009 | CN100461579C Method for controlling coordination voltage of regional power grid and provincial power grid |
| 02/11/2009 | CN100461578C Evaluation method for static voltage stability of the power system based on the dynamic continuous tide |
| 02/10/2009 | US7490013 Power grid failure detection system and method |
| 02/10/2009 | US7489989 System for dispatching and controlling of generation in large-scale electric power systems |
| 02/10/2009 | US7489988 Generator control system, generating apparatus control method, program and record medium |
| 02/10/2009 | US7489051 Adaptive power system with improved efficiency and distribution space reduction |
| 02/10/2009 | CA2519394C Power converter |
| 02/05/2009 | WO2009018407A1 Method and device for improving power factor and harmonics through active control of electric applicances |
| 02/05/2009 | WO2009016340A1 Control methods for vsc active rectifier/inverters under unbalanced operating conditions |
| 02/05/2009 | WO2009016113A1 Controlling a power system |
| 02/05/2009 | WO2009016038A2 Controlling distribution of electrical power |
| 02/05/2009 | WO2009015670A1 Energy transmission system, particularly for offshore oil installations |
| 02/05/2009 | US20090037030 Graphical interface for configuring a power supply controller |
| 02/05/2009 | US20090033156 Efficient operating point for double-ended inverter system |
| 02/05/2009 | US20090033155 Semiconductor integrated circuits |
| 02/05/2009 | US20090033153 Scalable distributed redundancy |
| 02/05/2009 | US20090033152 Controlling inrush current from a power supply to a load |
| 02/04/2009 | EP2020506A2 Method for calculating a regulation reserve and wind energy facility with a control unit for same method |
| 02/04/2009 | CN201191764Y Electric electricity-saving controller |
| 02/04/2009 | CN101359833A Harmonic reactive compensating apparatus and control method thereof |
| 02/04/2009 | CN101359832A Improved apparatus special for ore furnace low-pressure reactive compensation |
| 02/04/2009 | CN101359831A Modular active electric filter device |
| 02/04/2009 | CN101359830A Electric power noise wave eliminating circuit, power socket having the circuit and electrical apparatus |
| 02/04/2009 | CN101359829A Power angle stabilizing determination method for electrical power system |
| 02/04/2009 | CN100459365C Digital allocation method of the electric power transfer system |
| 02/04/2009 | CN100459364C Wind farm and method for operating same |
| 02/04/2009 | CN100459363C Method for recognizing oscillation in electric supply network |
| 02/04/2009 | CN100459362C No distortion digital differential filtering method |
| 02/04/2009 | CN100459361C Hybrid active power filter and its control method |
| 02/04/2009 | CN100458637C Low harmonic current power regulating method and apparatus |
| 02/03/2009 | US7485979 Method and system for controlling power generator having hydraulic motor drive |
| 02/03/2009 | CA2542193C Electrical power distribution control systems and processes |
| 02/03/2009 | CA2122438C Control procedure of a power converter device for supplying a continuous current to an electric arc furnace |
| 01/31/2009 | CA2615375A1 Traffic signal transfer switch with interlock constructions |
| 01/31/2009 | CA2615314A1 Traffic signal transfer switch with housing constructions |
| 01/29/2009 | WO2009015066A2 Modular vehicle power system |
| 01/29/2009 | WO2008145807A3 Regulation system |
| 01/29/2009 | WO2008145578A3 Device for high-voltage direct current transmission |
| 01/29/2009 | WO2008141963A3 Static var compensator apparatus |
| 01/29/2009 | WO2008084285A3 Reactive power control for operating a wind farm |
| 01/29/2009 | US20090027035 Output Regulation Circuit of a Power Converter without Current Sensing Loss and Method Thereof |
| 01/29/2009 | US20090027033 System and method for integrated temperature measurement in power over ethernet applications |
| 01/29/2009 | US20090027002 Power control interface & energy storage between a wind farm and a power transmission system |
| 01/28/2009 | EP2019467A1 Automated Load Balancing for distribution substation feeders |
| 01/28/2009 | EP2018694A2 Detecting faults in power systems |
| 01/28/2009 | EP1316132B1 System and device for monitoring at least one household electric user, in particular a household appliance |
| 01/28/2009 | EP1202594B1 Electricity generation equipment management system |
| 01/28/2009 | CN201188545Y Modularization inductance adjusting device |
| 01/28/2009 | CN201188544Y Intelligent phase-splitting reactive power compensating circuit |
| 01/28/2009 | CN201188543Y Automatic tracking tuning filter |
| 01/28/2009 | CN201188542Y Apparatus for dynamically adjusting current quality |
| 01/28/2009 | CN101355317A Power converter and power unit |
| 01/28/2009 | CN101355254A Non-principal shaft half directly-drive permanent magnet wind generating set and control method thereof |
| 01/28/2009 | CN101355253A Apparatus for generating to feed civil electricity using motion equipment |