| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 06/12/2007 | US7230819 Mobile power system |
| 06/12/2007 | US7230809 System for checking synchronization of AC voltage sources before closing a power circuit breaker |
| 06/12/2007 | US7230216 Induction heating method and unit |
| 06/07/2007 | US20070129851 Method and System for Local Load Control |
| 06/07/2007 | US20070126571 Power line communication system having time server |
| 06/06/2007 | EP1792386A1 Digital pulse width modulated controller |
| 06/06/2007 | EP1556934B1 Apparatus and method for modifying a power flux in an electrical transmission line section |
| 06/06/2007 | EP1395889A4 Automatic power factor correction system |
| 06/06/2007 | DE102005056700A1 Verfahren zum Versorgen von elektrischen Schiffs-Bordnetzen mit Fremdenergie Method for supplying electric marine electrical systems with external energy |
| 06/06/2007 | DE102005056699A1 Universal shore connection ship has converter which is installed onboard ship and connected to shore-side power supply line by switched electrical line |
| 06/06/2007 | DE102005055132A1 Vorrichtung zum Umrichten eines elektrischen Stromes und Verfahren zur Reduzierung der Lastwechselbeanspruchung von Leistungshalbleitereinheiten im Bereich der Hochspannungsenergieverteilung und -übertragung Apparatus for converting an electric current and method for reducing the load cycling of power semiconductor devices in the field of high voltage power distribution and transmission |
| 06/06/2007 | CN1977436A Generation facility management system |
| 06/06/2007 | CN1977435A Electric power system protective device |
| 06/06/2007 | CN1976210A System and method for common system and wind turbine control |
| 06/06/2007 | CN1976209A Double-rotor variable speed and frequency conversion wind power generation exciting method and control system thereof |
| 06/06/2007 | CN1976207A Telescopic double-rotor wind motor exciting system and electric power generating machine thereof |
| 06/06/2007 | CN1976206A Telescopic double-rotor electric power generator exciting method and electric power generator thereof |
| 06/06/2007 | CN1976205A Telescopic double-rotor wind electric exciting method and control system, and electric generator thereof |
| 06/06/2007 | CN1976180A Variable speed variable frequency pneumatic electric machine and with excitation control system and control method thereof |
| 06/06/2007 | CN1976178A Double-rotor pneumatic electric machine and variable speed constant frequency excitation control system thereof |
| 06/06/2007 | CN1976162A Dynamic and static state combined electric filtering device |
| 06/06/2007 | CN1320720C Dynamic control method for capacitor switching in low-voltage reactive compensation |
| 06/06/2007 | CN1320719C Method and apparatus for compensating industrial load reactive power dissipation |
| 06/06/2007 | CN1320718C Serial electric energy quality controller |
| 06/05/2007 | US7227281 Causing operation of load in alternate, reduced peak power mode |
| 06/05/2007 | US7227278 Multiple bi-directional input/output power control system |
| 05/31/2007 | WO2007060328A1 Control method and device for a decentralised energy production device and installation comprising at least two production devices which are provided with said control device |
| 05/31/2007 | WO2007060244A2 Method for supplying the electrical on-board power network of ships with external energy |
| 05/31/2007 | WO2007060189A1 Ship with a universal shore connection |
| 05/31/2007 | WO2006121893B1 Power factor correction apparatus and method of producing a power factor correction capacitance for a specified load |
| 05/31/2007 | US20070124619 Power supply system |
| 05/31/2007 | US20070121348 Converter circuit with two converter elements |
| 05/31/2007 | US20070120744 Apparatus for connecting a prime mover driven alternator to a circuit with an existing alternating current |
| 05/31/2007 | US20070120538 Cooperative control apparatus |
| 05/31/2007 | US20070120424 Compensator device for stabilising the power of alternators in electrical power generating plants |
| 05/31/2007 | US20070120422 Method and apparatus for providing power in an electrical system |
| 05/31/2007 | US20070120421 Parallel-tuned pick-up system with multiple voltage outputs |
| 05/30/2007 | EP1791240A2 Power supply system |
| 05/30/2007 | EP1791207A1 power converting apparatus for fuel cell and method thereof |
| 05/30/2007 | EP1790056A1 Load management in an electric power system |
| 05/30/2007 | CN2907030Y Low-harmonic variable-frequency speed regulator with reactive power compensation function |
| 05/30/2007 | CN2907029Y Rotary electromagnetic active and reactive power continuous adjuster |
| 05/30/2007 | CN2907028Y Serial-type combined switch circuit for capacitor bank switching |
| 05/30/2007 | CN2907027Y High-efficiency integrated filtering and compensation power-saving device |
| 05/30/2007 | CN1972061A Apparatus and method of recovering voltage amplitude and phase in drooping method of outer characteristic |
| 05/30/2007 | CN1972060A Hybrid active power filter and its control method |
| 05/30/2007 | CN1972059A A micro power network system |
| 05/30/2007 | CN1972057A A method for judging multi-fault based on line fault state and real power on control section |
| 05/30/2007 | CN1972055A Wind turbine over-voltage protection |
| 05/29/2007 | US7225086 Alternating-source peak-shift power application system, method and program product |
| 05/29/2007 | US7224131 High efficiency lighting system |
| 05/29/2007 | US7224084 Interface circuit |
| 05/29/2007 | US7224081 Voltage control for wind generators |
| 05/24/2007 | WO2007057408A1 Apparatus for converting an electrical current and method for reducing the load-change stress of power semiconductor units in the high-voltage energy distribution and transmission sector |
| 05/24/2007 | WO2006121425A3 System and method for electrical power conversion |
| 05/24/2007 | WO2006042482B1 Wiring diagram for watt and blind current component compensation in the earth fault point and phase-to-ground voltage equalization under failure-free network condition |
| 05/24/2007 | US20070115701 Electric power converter |
| 05/24/2007 | US20070114978 System for transmission of electric power |
| 05/24/2007 | CA2629845A1 Apparatus for converting an electric current and method for reducing the load variation load on power semiconductor units in the field of high-voltage power distribution and transmission |
| 05/23/2007 | EP1788688A2 Apparatus for synchronizing uninterruptible power supplies |
| 05/23/2007 | EP1787377A2 System consisting of a number of modules for monitoring and controlling an electrical installation |
| 05/23/2007 | CN2904425Y Low voltage power capacitance combined electric appliance |
| 05/23/2007 | CN2904424Y 智能化低压电力电容器 Intelligent low-voltage power capacitors |
| 05/23/2007 | CN2904423Y Intelligent low voltage power capacitor based on contactor |
| 05/23/2007 | CN2904422Y Dynamic load monitoring controller |
| 05/23/2007 | CN2903773Y Intelligent central air conditioner electricity saver |
| 05/23/2007 | CN1967961A Method for merging low-frequency wind generating set into electric network |
| 05/23/2007 | CN1967960A Coherency generating sets of electric power system and polymeric method of asynchronous motor group parameter |
| 05/23/2007 | CN1966810A Power supply method for washing machine and drying machine |
| 05/23/2007 | CN1317801C Wind power generating and network electricity complementary power supply for pumping unit |
| 05/23/2007 | CN1317800C Comprehesive power filter harmonic current predicting method based on weighted first order local thereory |
| 05/23/2007 | CN1317799C power transformer having harmonic suppression function and based on harmonic paraphase principle |
| 05/22/2007 | US7222111 Multi-utility energy control and facility automation system with dashboard having a plurality of interface gateways |
| 05/22/2007 | US7221132 Power supply circuit |
| 05/22/2007 | CA2568502A1 Apparatus for synchronizing uninterruptible power supplies |
| 05/22/2007 | CA2280385C Control arrangement and method for high-speed source-transfer switching system |
| 05/18/2007 | WO2007054729A1 Power converters |
| 05/18/2007 | WO2007053965A1 Method and apparatus for verifying the accuracy of state estimation calculations |
| 05/18/2007 | CA2629179A1 Power converters |
| 05/17/2007 | US20070112471 Method for determination of load characteristic which indicates the load of electrical primary components |
| 05/17/2007 | US20070108841 External power distribution architecture of a power supply |
| 05/16/2007 | CN2901661Y Power saving device for AC welder |
| 05/16/2007 | CN2901660Y Digital control circuit modularization of high voltage reactive power compensator |
| 05/16/2007 | CN2901659Y 1.14KV line power supply system |
| 05/16/2007 | CN2901658Y 节电器 Saver |
| 05/16/2007 | CN1965456A Switching apparatus and method for varying an impedance of a phase line of a segment of an electrical power line |
| 05/16/2007 | CN1964154A Reactive-load compensation device to regulate unbalance |
| 05/16/2007 | CN1964153A System and method for controlling power flow of electric power generation system |
| 05/16/2007 | CN1964152A A system to control and manage micro power network |
| 05/16/2007 | CN1316738C Electronic switch |
| 05/16/2007 | CN1316714C Transformer substation system |
| 05/16/2007 | CN1316713C Power system monitor and equipment information forming device |
| 05/16/2007 | CN1316709C Fast tracking low-voltage reactive compensator |
| 05/15/2007 | US7218089 Method and apparatus for implementing same phase power supply scheme |
| 05/15/2007 | US7218015 Method of providing a constant AC voltage to a remote variable load |
| 05/15/2007 | US7218014 Wind energy system, as well as a method for operating such a wind energy system |
| 05/10/2007 | WO2007052349A1 Electric power supply system and autonomous type distributed control system for electric power supply network and control method |
| 05/10/2007 | WO2007051334A1 Initializing an estimation of dynamic model parameters |
| 05/10/2007 | WO2007002853A3 High speed ramp generator |
| 05/10/2007 | US20070106427 Power plant operation control system and a power plant maintaining and managing method |