| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 01/07/2009 | CN201178023Y Super high voltage magnetic controlling type parallel reactor excitation equipment |
| 01/07/2009 | CN101341642A High voltage DC system |
| 01/07/2009 | CN101340111A Uninterrupted switching system of commercial power and generated power and method thereof |
| 01/07/2009 | CN101340100A Cyclic supplying power generation system of multiple combinations |
| 01/07/2009 | CN101340099A Super capacitor and accumulator hybrid energy-storing series type dynamic voltage restorer |
| 01/07/2009 | CN101340098A Dynamic reactive compensating method |
| 01/07/2009 | CN101340097A Intelligent modularized reactive compensator |
| 01/07/2009 | CN101340096A Electric reactive compensating controller |
| 01/07/2009 | CN101340095A Reactive layered self-adapting control method for power distribution network |
| 01/07/2009 | CN101340094A Automatic switching reactive compensator of tunable reactor type capacitor |
| 01/07/2009 | CN101340093A Low frequency voltage energy-saving electric appliance of ore furnace |
| 01/07/2009 | CN101340092A Novel power-saving device of ore furnace |
| 01/07/2009 | CN101340091A Apparatus for enhancing power factor of ore furnace |
| 01/07/2009 | CN101340090A Method of determining voltage stability margin for load shedding within an electrical power system |
| 01/07/2009 | CN101340089A Harmonic suppression apparatus of ore furnace |
| 01/07/2009 | CN101340088A Selecting and ordering method for conductive wire of extra-high voltage AC line |
| 01/07/2009 | CN101339644A Method of calculating electric power consumption saving effect in energy-saving drive support method and system |
| 01/07/2009 | CN100449925C Method for determining reverse current device work voltage |
| 01/07/2009 | CN100449923C Frequency transformer capable of continuously operating during power-off |
| 01/07/2009 | CN100449904C Method for operating frequence converter of a generator |
| 01/06/2009 | US7474995 Valuing and optimizing scheduling of generation assets |
| 01/06/2009 | US7474080 Method and apparatus for providing economic analysis of power generation and distribution |
| 01/06/2009 | US7474016 System and method for responding to abrupt load changes on a power system |
| 01/06/2009 | CA2452352C System and method for calibration of data in an electric power monitoring system |
| 01/02/2009 | DE102007030451A1 Stromversorgungsvorrichtung A power supply apparatus |
| 01/02/2009 | CA2636524A1 Method of determining voltage stability margin for load shedding within an electrical power system |
| 01/01/2009 | US20090006122 System and method for creating a cost-effective and efficient retail electric power exchange/energy service provider load optimization exchange and network therefor |
| 01/01/2009 | US20090003481 System, Device and Method |
| 01/01/2009 | US20090003020 Cross current control for power converter system |
| 01/01/2009 | US20090001725 Method for operation of a converter system |
| 12/31/2008 | WO2008141092A3 Dynamic voltage sag correction |
| 12/31/2008 | WO2008107767A3 System for providing or receiving electric power from a parked vehicle |
| 12/31/2008 | EP2009778A1 System interconnection power conditioner and system interconnection power supply system |
| 12/31/2008 | EP2009763A2 Electricity supply device |
| 12/31/2008 | EP2009760A2 Power system stabilizer and method |
| 12/31/2008 | EP2008352A1 Method for monitoring the electrical energy quality in an electrical energy supply system, power quality field device and power quality system |
| 12/31/2008 | EP1649573B1 Method for determining a charge characteristic indicating electric primary components |
| 12/31/2008 | CN201174615Y Travelling emergency power supply stations for regional burst power breaking |
| 12/31/2008 | CN201174600Y AC integrated power source apparatus of mobile communication base station |
| 12/31/2008 | CN201174599Y ATS switching control apparatus of 3 input integrated electric power |
| 12/31/2008 | CN201174598Y Transient anti-harmonic type reactive power auto-compensation apparatus |
| 12/31/2008 | CN201174597Y 10kV reactive compensating capacitor switch |
| 12/31/2008 | CN201174596Y High-resistance controllable reactive compensating apparatus |
| 12/31/2008 | CN201174595Y Selection type reactive compensating controller having diagnosis function |
| 12/31/2008 | CN201174594Y Digital reactive compensating controller |
| 12/31/2008 | CN201174593Y Reactive and grouped compensation device for capacitor |
| 12/31/2008 | CN201174592Y Active filter for power source |
| 12/31/2008 | CN201174591Y Synthetic energy saving system of enterprise power distribution network |
| 12/31/2008 | CN201174590Y Synthetic energy saving system of urban power distribution network |
| 12/31/2008 | CN201174587Y Electric, electronic (communication) apparatus and earthing dispenser for large earthing resistance of network |
| 12/31/2008 | CN201174525Y Movable low-voltage grid-connected generating system vehicle group |
| 12/31/2008 | CN201174512Y Electric power distribution cabinet having electricity saving function |
| 12/31/2008 | CN201174314Y Conjugated serial reactor |
| 12/31/2008 | CN101336529A Communication structure for solar inverters |
| 12/31/2008 | CN101336504A Method for smoothing alternating electric current from a number of power generating units and wind power plant including a number of wind mills with variable rotational speed |
| 12/31/2008 | CN101335457A Power system stabilizer and method |
| 12/31/2008 | CN101335456A Power distributing reactive optimizing compensation system based on GPRS and control method thereof |
| 12/31/2008 | CN101335455A Dynamic reactive compensator |
| 12/31/2008 | CN101335454A System for remotely controlling energy distribution at local sites |
| 12/31/2008 | CN101335453A STATCOM controlling method |
| 12/31/2008 | CN101335452A Single phase filter for eliminating railway harmonic and composite control method thereof |
| 12/31/2008 | CN101333919A Energy-saving oil pumping machine |
| 12/31/2008 | CN100448134C Parellel inversion power system for railway |
| 12/30/2008 | US7471529 Universal three phase controllers for power converters |
| 12/30/2008 | US7471065 Multi-series battery control system |
| 12/30/2008 | US7471014 Method and apparatus distributing power to a load in a powered device |
| 12/30/2008 | CA2396448C Method and apparatus for determining the internal impedance of a distribution transformer and sensing dc current through an ac power meter |
| 12/25/2008 | US20080315685 Energy Converter System With Reactive-Power-Management |
| 12/25/2008 | US20080315684 Square-wave modulated voltage dip restorer |
| 12/24/2008 | WO2008154918A1 Inverter unit without transformer for thin-film solar panels |
| 12/24/2008 | WO2008154749A1 Appliance and method for monitoring a phase line of a section of an electrical energy grid line |
| 12/24/2008 | EP2005568A1 Space-saving inverter with reduced switching losses and increased life |
| 12/24/2008 | EP2005552A1 A device and a method for control of power flow in a transmission line |
| 12/24/2008 | EP2004987A1 A system for generating electric energy |
| 12/24/2008 | DE102007027347A1 Einrichtung und Verfahren zur Erzeugung elektrischer Energie in Kleinkraftwerksanlagen Apparatus and method for generating electrical energy in small power plants |
| 12/24/2008 | CN201170792Y Apparatus for measuring AC parameter |
| 12/24/2008 | CN101330219A Multifunctional photovoltaic parallel inverting device |
| 12/24/2008 | CN101330218A Control device and method for SCR detection as well as control device and method for power supply changeover |
| 12/24/2008 | CN101330217A Low-voltage reactive compensator capable of saving energy of electric arc furnace |
| 12/24/2008 | CN101330216A Secondary low-voltage compensation apparatus for improving submerged arc resistance furnace power factor |
| 12/24/2008 | CN101330215A TCR type SVC system debugging method for regulating and controlling voltage of transformer substation |
| 12/24/2008 | CN101330214A TCR type SVC voltage control method for transformer substation |
| 12/24/2008 | CN101330213A Display apparatus for active electric power filter |
| 12/24/2008 | CN101330212A Method for designing integrated platform for power pool safety stabilization synthesis defense integrating EMS and WAMS |
| 12/24/2008 | CN101330211A Micro-electric network system capable of generating and using electricity using renewable energy resources comprehensively |
| 12/24/2008 | CN101330210A Device and method for formulating employing plan of power station |
| 12/24/2008 | CN100446378C Dynamic capacity compensation controller and its switching mode |
| 12/24/2008 | CN100446377C TCR controller |
| 12/24/2008 | CN100446376C Control system and control method for cogeneration system |
| 12/24/2008 | CN100446371C Multiple-output circuit device with settable power supply priority order |
| 12/24/2008 | CN100446310C Fuel-cell power generation system and control method therefor |
| 12/24/2008 | CA2692022A1 Appliance and method for monitoring a phase line of a section of an electrical energy grid line |
| 12/23/2008 | US7468565 Electrical load control device |
| 12/23/2008 | CA2323869C A method and a device for damping power oscillations in transmission lines |
| 12/18/2008 | WO2008154220A2 Integrated multiple fuel renewable energy system |
| 12/18/2008 | WO2008153735A2 Power system with multiple generator units |
| 12/18/2008 | WO2008153376A1 Power flow controller |
| 12/18/2008 | WO2008151587A1 Device for feeding electric energy into a power grid and dc converter for such a device |
| 12/18/2008 | WO2008131777A3 Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed |
| 12/18/2008 | US20080313021 Power demand and supply-adjustment system and method |