| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 04/03/2013 | CN103023420A Instantaneous power detection and load identification based induction motor cooperative control system |
| 04/03/2013 | CN103023391A Soft-starting current-limiting compensation and harmonic filtering integration method of high-voltage high-power motor |
| 04/03/2013 | CN103023361A Energy conversion system and operation method thereof and photovoltaic power generation system |
| 04/03/2013 | CN103023344A Universal smart grid power electronic device |
| 04/03/2013 | CN103023343A Three-phase 24-pulse traction rectifier transformer |
| 04/03/2013 | CN103023290A Mid-voltage variable frequency driving system and total harmonic distortion compensation control method |
| 04/03/2013 | CN103023117A Electric vehicle charging system with high power quality |
| 04/03/2013 | CN103023074A Active real-time scheduling method for large power grid based on model predictive control |
| 04/03/2013 | CN103023073A Method for mixedly optimizing and dispatching hydropower station group, power stations and units |
| 04/03/2013 | CN103023072A Method for optimizing and controlling machine side converter of permanent magnet synchronous wind power generation system |
| 04/03/2013 | CN103023071A Motor-side converter control system for direct-drive permanent magnet synchronous wind power system |
| 04/03/2013 | CN103023070A Hybrid-clamped three-electric-level three-phase four-wired photovoltaic system based on 3D-SPWM (three-dimensional sinusoidal pulse width modulation) |
| 04/03/2013 | CN103023069A Fault ride-through control method for inversion type new energy power supply |
| 04/03/2013 | CN103023068A Hybrid inverter for power supply system |
| 04/03/2013 | CN103023067A Direct-driven wind power generation system based on public direct current bus |
| 04/03/2013 | CN103023066A Optimal configuration method suitable for energy storage power of electrical power system with wind electricity |
| 04/03/2013 | CN103023065A Wind power short-term power prediction method based on relative error entropy evaluation method |
| 04/03/2013 | CN103023064A High-voltage inverter low-voltage ride through method |
| 04/03/2013 | CN103023063A Grid-connection feedback device of high-voltage inverter and control method of grid-connection feedback device |
| 04/03/2013 | CN103023062A Method and systems for operating a power generation and delivery system |
| 04/03/2013 | CN103023061A Method for operating a wind farm, wind farm controller and wind farm |
| 04/03/2013 | CN103023060A Photovoltaic inverter and harmonic suppression method |
| 04/03/2013 | CN103023059A Energy conversion system, operating method thereof and photovoltaic power generation system |
| 04/03/2013 | CN103023058A Control method for high-voltage direct-current flexible system for supplying power to passive network |
| 04/03/2013 | CN103023057A Voltage-type PWM (pulse-width modulation) rectifier output power control method under power grid unsymmetrical fault |
| 04/03/2013 | CN103023056A Micro-grid control method and micro-grid control device |
| 04/03/2013 | CN103023055A Method for stabilizing wind-solar generation system output power fluctuation with composite energy storage technology |
| 04/03/2013 | CN103023054A Electric-power-distributed energy storage device and control system thereof |
| 04/03/2013 | CN103023053A Battery stack control system and control method thereof |
| 04/03/2013 | CN103023052A Intelligent quick dynamic hybrid reactive compensation system |
| 04/03/2013 | CN103023051A Intelligent high-precision dynamic reactive compensation control system |
| 04/03/2013 | CN103023050A Reactive compensation device with variable capacitor module and variable capacitor module |
| 04/03/2013 | CN103023049A Dynamic power factor compensation and harmonic suppression mechanism of drilling machine |
| 04/03/2013 | CN103023048A Compensation method for self-adaption reactive power |
| 04/03/2013 | CN103023047A Device and method for dynamic reactive power compensation energy saving of oil pumping unit |
| 04/03/2013 | CN103023046A Zero passage switching filtering reactive compensation device based on digital signal processor (DSP) chip control |
| 04/03/2013 | CN103023045A On-pole idle self-compensating device |
| 04/03/2013 | CN103023044A Combination switch with intelligent zero-crossing switching function |
| 04/03/2013 | CN103023043A Two-phase STATCOM (Static Synchronous Compensator) management device on traction side of electrified railway, and control method of device |
| 04/03/2013 | CN103023042A Three-phase capacitor switching type reactive compensator |
| 04/03/2013 | CN103023041A Active/reactive power control system of intelligent wind power station |
| 04/03/2013 | CN103023040A Secondary low-pressure dynamic compensation device for remote wireless monitoring of high-power submerged arc furnace |
| 04/03/2013 | CN103023039A Secondary low-pressure dynamic energy-saving compensation device for remote wireless monitoring of submerged arc furnace |
| 04/03/2013 | CN103023038A Method and arrangement in connection with a cascade-fed asynchronous generator |
| 04/03/2013 | CN103023037A Method and system for solving voltage instability of grid power at receiving end through direct-current delay interlocking |
| 04/03/2013 | CN103023036A Method and system for solving voltage instability through direct-current frequency modulation and low-voltage load shedding coordination |
| 04/03/2013 | CN103023035A Optimal configuration method of multi-energy supplementary power generation system |
| 04/03/2013 | CN103023034A Active power filter with water cooling technology |
| 04/03/2013 | CN103023033A Transformerless hybrid active power amplifier and implementation and control methods thereof |
| 04/03/2013 | CN103023032A Simulation device for distribution network power quality study |
| 04/03/2013 | CN103023031A Low-voltage six-phase power distribution system |
| 04/03/2013 | CN103023030A Portable household power saver |
| 04/03/2013 | CN103023029A Automatic parallel off and parallel control device for sectionalized power supply of single busbar |
| 04/03/2013 | CN103023028A Rapid grid failure positioning method based on dependency graph of entities |
| 04/03/2013 | CN103023027A Method for establishing equivalent model of external characteristics of wind power plant of doubly fed induction generator (DFIG) |
| 04/03/2013 | CN103023026A Quick system rebuilding method of large area power grid blackout |
| 04/03/2013 | CN103023025A System and method for multi-element renewable energy supplementary power generation of garbage disposal yard |
| 04/03/2013 | CN103023024A Computing method for transmission grid active loss reduction by automatic voltage control |
| 04/03/2013 | CN103023023A Comprehensive evaluation method based on multi-stress for electric energy quality of monitoring points of electrified railway |
| 04/03/2013 | CN103023022A Simulating calculation method for transmission section power limit based on real-time monitoring data of line |
| 04/03/2013 | CN103023021A Decoupling control method for nonlinear power of double-fed wind power generation system |
| 04/03/2013 | CN103023020A Facilities administration control and time schedule (FACTS) equipment cluster control system and control method thereof |
| 04/03/2013 | CN103023019A Method and system for analyzing reserve capacity of power grid |
| 04/03/2013 | CN103023018A Electrical power system multi-target optimal power flow implementation method and device |
| 04/03/2013 | CN103023017A Power supply method and device |
| 04/03/2013 | CN103023016A Repeating and simulating method for automatic generation control of power grid |
| 04/03/2013 | CN103023015A Online virtual measuring method of distribution circuit impedance |
| 04/03/2013 | CN103023014A Simulation method of integrated defense system for enhancing coal enterprise power system power supply reliability |
| 04/03/2013 | CN103023013A Method for calculating three-phase load flow of active distribution network |
| 04/03/2013 | CN103020335A Method for automatically converting distribution network geographic wiring diagram into region orthogonal diagram |
| 04/03/2013 | CN102354977B Feeder fault handling method |
| 04/03/2013 | CN102332721B Method for predicting harmonic current of hybrid active power filter based on optimal linear prediction theory |
| 04/03/2013 | CN102280883B Wide area pattern analysis method for dynamic simulation validation of power system |
| 04/03/2013 | CN102270849B Method for suppressing neutral current of transformer |
| 04/03/2013 | CN102222925B Phase current balance method for line current asymmetric compensation of D-STATCOM |
| 04/03/2013 | CN102185308B Power system state estimating method for taking zero injection measurement equality constraint into consideration |
| 04/03/2013 | CN102136737B Doubly-fed wind power converter low-voltage traversing topological structure and control method thereof |
| 04/03/2013 | CN102136728B Flexible combiner and control method thereof |
| 04/03/2013 | CN102122820B Cellular power supply network, intelligent gateway thereof and power supply control method |
| 04/03/2013 | CN102118026B ETAP-based harmonic and negative sequence power flow method for large-scale power grid |
| 04/03/2013 | CN101964525B Method for estimating state of distribution network for supporting large-scale current measurement |
| 04/03/2013 | CN101963319B Wind power grid electric energy complementary street lamp lighting system |
| 04/03/2013 | CN101924393B Method and system for estimating load model parameters of electric system on line |
| 04/03/2013 | CN101826728B Dynamic reactive power compensation device and control method thereof |
| 04/03/2013 | CN101783514B Correction method and circuit of AC load power factor |
| 04/03/2013 | CN101632211B Power-line sag calculation by way of power-system state estimation |
| 04/03/2013 | CN101483344B Wind power installation and method of operating it |
| 04/02/2013 | US8413035 Power control apparatus and method for realizing efficient load factor with lower contracted power limit |
| 04/02/2013 | US8412387 Apparatus for controlling a power using a smart device and method thereof |
| 04/02/2013 | US8411472 Power conversion device |
| 04/02/2013 | US8410635 Systems and methods for deactivating a matrix converter |
| 04/02/2013 | US8410633 Dynamic load shedding system for a standby generator |
| 04/02/2013 | US8410632 Power adapter having multi-DC power connectors |
| 03/28/2013 | WO2013042893A2 System for preventing disasters caused by power supply and demand mismatches |
| 03/28/2013 | WO2013042520A1 Electric power information control system |
| 03/28/2013 | WO2013042509A1 Mechanical parking facility and power supplying method for mechanical parking facility |
| 03/28/2013 | WO2013042493A1 Electric power demand forecast system and method |
| 03/28/2013 | WO2013042475A1 Battery control system, battery control device, battery control method and recording medium |
| 03/28/2013 | WO2013042474A1 Battery control system, battery control device, battery control method, and recording medium |
| 03/28/2013 | WO2013042363A1 Charging system, server device, and server device program |