| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 05/13/2009 | EP2057728A1 Electrical distribution networks |
| 05/13/2009 | EP2057727A2 Method and apparatus for a power line communications test system |
| 05/13/2009 | EP1369985B1 Inverter for transforming a DC voltage into an AC current or an AC voltage |
| 05/13/2009 | CN201238198Y Static non-circular current variable-load phase advancer |
| 05/13/2009 | CN201238197Y Energy-saving power distribution unit for alternating current motor operation |
| 05/13/2009 | CN201238196Y 智能无功功率补偿和谐波滤波电路 Intelligent reactive power compensation and harmonic filtering circuit |
| 05/13/2009 | CN201238195Y Universal electricity-saving device |
| 05/13/2009 | CN201238117Y Lightning-protection electricity-saving protection circuit in single-phase socket |
| 05/13/2009 | CN201238083Y Power cord with power supply noise filter |
| 05/13/2009 | CN101431302A Parallel connection electric power regulating system with cyclic current wave filter |
| 05/13/2009 | CN101431255A Closed loop operation risk analysis method for power system |
| 05/13/2009 | CN101431240A Space-saving integrated AVC system control method considering step power station |
| 05/13/2009 | CN101431239A Method for implementing credible locking of major-minor carrying apparatus of stabilization control device |
| 05/13/2009 | CN101431238A Power distribution network power supply capacity evaluation method considering N-1 criterion |
| 05/13/2009 | CN101431237A Non-cabinet power supply system based on intelligent module |
| 05/13/2009 | CN101431234A Dynamic electric voltage recovery device with fault current limitation function and use method thereof |
| 05/13/2009 | CN101430965A Electricity-saving device and its production and installation method |
| 05/13/2009 | CN101428571A Direct net-attached mode of traction power supply high voltage synthetic compensating gear |
| 05/13/2009 | CN101428570A Direct net suspension mode for implementing homophase traction power supply based on high voltage synthetic compensating gear |
| 05/13/2009 | CN100488025C Energy conserving motor controller |
| 05/12/2009 | US7532987 Fuel-cell power generation system and control method therefor |
| 05/12/2009 | US7532955 Distributed protection system for power distribution systems |
| 05/12/2009 | US7532490 Converter topology and methods for interfacing an electrical machine to electrical power grid |
| 05/12/2009 | US7531910 Wing energy unit |
| 05/12/2009 | CA2402203C Oilwell casing electrical power pick-off points |
| 05/07/2009 | WO2009058297A2 Led light controller system and method |
| 05/07/2009 | WO2009056662A1 System for monitoring photovoltaic solar facilities |
| 05/07/2009 | WO2009056573A1 Photovoltaic inverter unit with option for switching between a power supply system with a fixed frequency and a load variable frequency |
| 05/07/2009 | WO2009056158A1 Method and device for filtering a filter output current and / or voltage of an inverter output |
| 05/07/2009 | WO2009038336A3 Apparatus for improving power quality |
| 05/07/2009 | WO2009031002A3 System for simultaneously producing electric and thermal energy |
| 05/07/2009 | WO2008145982A3 Power system |
| 05/07/2009 | US20090115653 Multi-cell voltage secure data encoding in hybrid vehicles |
| 05/07/2009 | US20090115254 Systems and Methods for Voltage SAG Compensation |
| 05/07/2009 | US20090115252 Power management systems with multiple power sources |
| 05/07/2009 | US20090115251 Charging Device, Electric-Powered Vehicle, and Charging System |
| 05/07/2009 | DE19654830B4 Steuerungssystem für eine Leistungswandlerschaltung A control system for a power converter circuit |
| 05/06/2009 | EP2056421A2 Method and system for power plant block loading |
| 05/06/2009 | EP2056420A1 Power system |
| 05/06/2009 | EP2054988A1 Dc filter and voltage source converter station comprising such filter |
| 05/06/2009 | EP2054987A1 Voltage source converter station |
| 05/06/2009 | EP1926844B1 Method for detecting islanding operation of a distributed generator |
| 05/06/2009 | EP1836391A4 Vanadium redox battery energy storage and power generation system incorporating and optimizing diesel engine generators |
| 05/06/2009 | CN201234167Y Automatic sub-station apparatus for coal mine power supply |
| 05/06/2009 | CN201234165Y Automatic control apparatus for power distribution system |
| 05/06/2009 | CN201234144Y Energy saver for low distribution system |
| 05/06/2009 | CN201234143Y Hybrid active electric filter having highly efficient grid connection function |
| 05/06/2009 | CN201234142Y Bus control apparatus for solar photovoltaic grid connection DC-to-AC converter |
| 05/06/2009 | CN201234141Y Electricity quality intelligent monitoring and resonating device |
| 05/06/2009 | CN201234140Y Non-surge low voltage reactive compensator |
| 05/06/2009 | CN201234139Y Dynamic reactive compensation apparatus for drilling well power distribution network |
| 05/06/2009 | CN201234138Y No-voltage impact operation apparatus when sharing one high voltage switch by TCR, FC |
| 05/06/2009 | CN201234137Y High-pass filter capable of parameter changing |
| 05/06/2009 | CN201234136Y Dual power source electricity supply system |
| 05/06/2009 | CN201234027Y Filter socket having leakage protection |
| 05/06/2009 | CN201234026Y Electric power socket capable of time division electricity fee metering |
| 05/06/2009 | CN201233816Y Combination switch |
| 05/06/2009 | CN201232606Y Sail type wind power generation system |
| 05/06/2009 | CN101427437A Method for monitoring the electrical energy quality in an electrical energy supply system, power quality field device and power quality system |
| 05/06/2009 | CN101425689A Intelligent remote electricity control system |
| 05/06/2009 | CN101425688A Method and system for power plant block loading |
| 05/06/2009 | CN101425687A Automatic control method for transformer economic operation and standby automatic throwing integrated apparatus |
| 05/06/2009 | CN101425686A Electrical power system on-line safety and stability evaluation forecast failure collection adaptive selection method |
| 05/06/2009 | CN101425685A Internal bridge connecting and protection implementing method for linkage standby electricity supply mode |
| 05/06/2009 | CN100486093C Control structure of full power type AC-DC-AC converter for wind power generation |
| 05/06/2009 | CN100486090C Voltage source and current source with capacitor |
| 05/06/2009 | CN100486075C Three-level medium voltage converter for megawatt wind power generation |
| 05/06/2009 | CN100486074C Control method for the mixing compensation system of the active power filter and parallel capacitor |
| 05/06/2009 | CN100486073C Method for evaluating non-linear dynamic state with loading voltage characteristics |
| 05/05/2009 | US7528504 Automatic power adapter |
| 05/05/2009 | US7528496 Method for operating or controlling a wind turbine and method for providing primary control power by means of wind turbines |
| 05/05/2009 | CA2476909C Modular ac voltage supply and algorithm for controlling the same |
| 04/30/2009 | WO2009054942A2 Methods, circuits, and computer program products for generation following load management |
| 04/30/2009 | WO2009052843A1 Electrical switchgear, particularly for connecting generators and thrusters in dynamically positioned vessels |
| 04/30/2009 | WO2007056116A3 Power distribution load shedding system and method of use |
| 04/30/2009 | US20090108829 Control integrated circuit with combined output and input |
| 04/30/2009 | US20090108678 Power system with method for adding multiple generator sets |
| 04/30/2009 | US20090108676 Power system with method for adding multiple generator sets |
| 04/29/2009 | EP2053730A1 Single-phase inverter circuit for conditioning and converting dc electrical energy into ac electrical energy |
| 04/29/2009 | EP2052451A1 Model-based method for monitoring a power supply network, and system for carrying out said method |
| 04/29/2009 | CN201230215Y Apparatus for balancing single-phase load of electrified railway by SVG |
| 04/29/2009 | CN201230214Y Medium and high voltage bidirectional reactive automatic regulating apparatus |
| 04/29/2009 | CN201230213Y Magnet controlled voltage regulating reactive automatic compensation device |
| 04/29/2009 | CN201230212Y Novel intelligent reactive compensation apparatus |
| 04/29/2009 | CN201230211Y Integrated voltage regulating apparatus for electricity transmission line |
| 04/29/2009 | CN201230210Y Power supply filter |
| 04/29/2009 | CN101421898A Emergency power system using fuel cell, and distribution panel |
| 04/29/2009 | CN101421684A Power converting device, and control method therefor |
| 04/29/2009 | CN101420129A Accelerated power type electric power system stabilizer |
| 04/29/2009 | CN101420128A Dynamic passive compensation system and controlling method thereof |
| 04/29/2009 | CN101420127A Harmonic treating apparatus having passive compensation |
| 04/29/2009 | CN101420126A Distribution network electric energy quality composite control system and controlling method thereof |
| 04/29/2009 | CN101420125A Zero phase sequence resistance adjusting apparatus and method for zero phase sequence filter |
| 04/29/2009 | CN101418776A Method for controlling the warning lights of turbines in a wind park |
| 04/29/2009 | CN100483917C Renewable energy feed-back parallel network circuit and its control device |
| 04/29/2009 | CN100483889C Method and apparatus for multifrequency power distribution |
| 04/29/2009 | CN100483888C Economic adjusting and control method for top layer of the static mixed automatic voltage control |
| 04/29/2009 | CN100483887C Distributive analysis method of power system low frequency vibration |
| 04/28/2009 | US7526366 Electrical power control system, and method for setting electric state variables and/or parameters in a current conductor |
| 04/28/2009 | US7525292 Compensator device for stabilising the power of alternators in electrical power generating plants |