| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 07/30/2008 | EP1949520A1 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 |
| 07/30/2008 | EP1580862B1 Master/slave control of parallel connected solar battery modules |
| 07/30/2008 | CN201092937Y Structure for installing transformer on engine room rear in wind power generation system |
| 07/30/2008 | CN101233662A Communication system for inductive power transfer system |
| 07/30/2008 | CN101232268A Control method for inhibiting input electric network power fluctuation in wind power generation system |
| 07/30/2008 | CN101232188A Method for controlling reactive-load compensation capacitor and capable of on-line detecting and reactive-load compensation controller thereof |
| 07/30/2008 | CN101232187A Positive and negative order double ring stacking control method of electric power distribution static state synchronous compensator based on instantaneous power balance |
| 07/30/2008 | CN101232186A High frequency pulse filter with preposition protective circuit |
| 07/30/2008 | CN101232185A Enterprise power distribution network synthesis energy saving method |
| 07/30/2008 | CN101232184A Single line power transmission system |
| 07/30/2008 | CN101232183A Method for evaluating limit transmitted power applied in electric network on-line scheduling decision |
| 07/30/2008 | CN101232182A Three-dimensional coordinated electric network energy managing system and method for controlling and evaluating electric network |
| 07/30/2008 | CN101232181A Power distribution network energy saving and consume reducing integrated management system based on multi intelligent body and management method thereof |
| 07/30/2008 | CN101232180A Power distribution system load obscurity model building device and method |
| 07/30/2008 | CN101231523A Control system and method for sensibility charge |
| 07/30/2008 | CN100407540C 注入式混合型有源电力滤波器的复合控制方法 Complex control method injection type hybrid active power filter |
| 07/30/2008 | CN100407539C 大功率有源滤波器的控制方法 The control method of active power filter |
| 07/30/2008 | CN100407531C 可改变输电线路段中相线阻抗的转换设备及方法 Transmission line section can be changed in the phase impedance conversion apparatus and method |
| 07/29/2008 | US7406364 Method and system to calculate a demand for energy |
| 07/29/2008 | US7405991 Semiconductor device voltage supply for a system with at least two, especially stacked, semiconductor devices |
| 07/29/2008 | US7405497 Integrated power supply system |
| 07/29/2008 | US7405496 Transfer circuit topology for redundant power generator regulators and inverting DC drives |
| 07/29/2008 | US7405490 Wind turbine for producing electrical power and a method of operating the same |
| 07/29/2008 | CA2232562C Electrical power distribution and communication system for an underwater cable |
| 07/26/2008 | CA2619159A1 Automatic transfer switch with monitor mode and method employing the same |
| 07/26/2008 | CA2619151A1 Transfer switch with generator maintenance indicator |
| 07/26/2008 | CA2619132A1 Transfer switch with generator runtime counter |
| 07/24/2008 | WO2008086608A1 Multiple generator wind turbine and method of operation |
| 07/24/2008 | WO2008070852A3 Modular power converters usable alone or in a multiphase power converter |
| 07/24/2008 | WO2008067299A3 Method and system for isolating disturbances to the power distribution system |
| 07/24/2008 | US20080177423 Automatic energy management and energy consumption reduction, especially in commercial and multi-building systems |
| 07/24/2008 | US20080174183 Active Filter |
| 07/24/2008 | US20080174182 Method for operating a multi-cell power supply having an integrated power cell bypass assembly |
| 07/24/2008 | US20080174181 Dual power supply system |
| 07/24/2008 | US20080174180 Method for the operation of a wind farm |
| 07/24/2008 | US20080174178 Field bus interface |
| 07/24/2008 | US20080174177 System and method for supplying power for actuators on board an aircraft |
| 07/24/2008 | US20080174116 Feed converter system |
| 07/24/2008 | DE112005003686T5 Intelligente Stromüberwachungseinheit Intelligent Power Management |
| 07/24/2008 | CA2675883A1 Multiple generator wind turbine and method of operation |
| 07/23/2008 | EP1947545A2 Power supply circuit for changing loads with three phases |
| 07/23/2008 | EP1946436A1 Power converters |
| 07/23/2008 | EP1946125A1 Method and apparatus for verifying the accuracy of state estimation calculations |
| 07/23/2008 | CN201091063Y Solar energy photovoltaic power generation parallel in power station |
| 07/23/2008 | CN201091054Y Closed loop type system intelligent electricity-saving device |
| 07/23/2008 | CN201090293Y Organic materials biogas power generation system |
| 07/23/2008 | CN101227092A Method for recognizing harmonic source in electric power distribution network |
| 07/23/2008 | CN101227091A Intelligent power utilization system |
| 07/23/2008 | CN100405689C System for providing voltage support to a load connected to a utility power network |
| 07/23/2008 | CN100405688C Method for determining a charge characteristic indicating electric primary components |
| 07/22/2008 | US7402990 Reduction of energization transients in a three phase power system |
| 07/22/2008 | CA2405812C A power load-leveling system and packet electrical storage |
| 07/17/2008 | WO2008084398A2 Method for measuring the mains frequency, and electrical applicance that implements said method |
| 07/17/2008 | WO2008084285A2 Reactive power control for operating a wind farm |
| 07/17/2008 | WO2008063452A3 Method of communicating a command for load shedding of a load control system |
| 07/16/2008 | EP1943566A1 Initializing an estimation of dynamic model parameters |
| 07/16/2008 | CN201087927Y Solar grid power generation system |
| 07/16/2008 | CN201087926Y Intelligent combination switch for reactive-load compensation |
| 07/16/2008 | CN101223359A Power control of a wind park |
| 07/16/2008 | CN101222151A Mutually independent and redundant vehicle mounted power distribution network |
| 07/16/2008 | CN101222143A Passive electric filtering compensation controller |
| 07/16/2008 | CN101222142A Imbalance compensation and ant colony optimization method of static reactive compensator |
| 07/16/2008 | CN101222141A Method for selecting capacity and installation position of active electric power wave filter |
| 07/16/2008 | CN101222140A Forecast accident power system voltage stabilization fast on-line analyzing and preventing control method |
| 07/16/2008 | CN100403651C Thyrister valve photoelectric triger plate for stationary reactive power compensator |
| 07/16/2008 | CN100403642C Power converter |
| 07/16/2008 | CN100403619C Distribution-type real-time voltage power-less optimized controlling method |
| 07/16/2008 | CN100403618C Transient state stabilizing analysis and control method for power system |
| 07/15/2008 | US7400065 Electrical power distribution system and method with active load control |
| 07/15/2008 | US7400062 Rack level power management |
| 07/15/2008 | US7400061 Soft switched secondary side post regulator for DC to DC converter |
| 07/15/2008 | CA2342484C Method and apparatus for supplying power to a load circuit from alternate electric power sources |
| 07/15/2008 | CA2291832C Source-transfer switching system and method |
| 07/10/2008 | WO2008081189A1 Power systems |
| 07/10/2008 | US20080164850 Shore power transfer switch |
| 07/10/2008 | US20080164766 Current bypass for distributed power harvesting systems using dc power sources |
| 07/10/2008 | US20080164765 Regulator Circuit with Multiple Supply Voltages |
| 07/10/2008 | US20080164759 Redundant power supply architecture with voltage level range based load switching |
| 07/10/2008 | US20080164757 Electrical component capable of providing power and method of using same |
| 07/10/2008 | DE102006049337A1 Controlling and regulating circuit for primary- and secondary regulation, utilizes real rotating mass or imaginary rotating mass in network for output-power cum frequency control or regulation |
| 07/09/2008 | EP1941335A1 Active network filter |
| 07/09/2008 | CN201084867Y A wireless remote-control system of electric power active filter |
| 07/09/2008 | CN201084636Y A capacitor bank fling-cut special vacuum switch |
| 07/09/2008 | CN100401625C Active passive mixed single phase power factor correcting circuit |
| 07/09/2008 | CN100401612C Noise suppressor |
| 07/09/2008 | CN100401611C Four-way power supply equalization switched transformer station wiring method |
| 07/09/2008 | CN100400862C Wind power plant comprising a reactive power module for supporting a power supply system and corresponding method |
| 07/08/2008 | US7397225 Apparatus for controlling the power of an AC voltage supplying an electrical consumer by phase control and method for reducing harmonics |
| 07/08/2008 | CA2354426C Method and system for connecting and synchronizing a supplemental power source to a power grid |
| 07/03/2008 | WO2008077654A1 Electrical power usage controller |
| 07/03/2008 | US20080158917 Modular uninterruptible power supply with loadsharing between modules |
| 07/03/2008 | US20080157822 Zero-crossing point detection circuit |
| 07/03/2008 | US20080157728 Reactive-power control apparatus and reactive-power compensator using the same |
| 07/03/2008 | US20080157724 Large transient detection for electric power generation |
| 07/03/2008 | US20080157697 Apparatus for controlling lamp source and electric equipment and power socket therof |
| 07/03/2008 | US20080157596 Power distribution device of power storage apparatus |
| 07/03/2008 | US20080157595 Power supply apparatus with soft start control |
| 07/03/2008 | US20080157594 Electric power generation system with multiple engines driven by a common prime mover |
| 07/03/2008 | US20080157592 Electric power generation system with current-controlled power boost |
| 07/03/2008 | US20080157538 Methods of synchronizing a plurality of generators |