Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
03/2013
03/21/2013DE102011082780A1 Local power supply network for e.g. electrical household appliances, has configuration unit for computing combination of power generation units and storage units such that computed combination corresponds to preset optimum decision criteria
03/21/2013CA2848316A1 Stabilization of a dc electric network
03/21/2013CA2847812A1 Optimization of a home automation system using a local power line communication network
03/21/2013CA2847503A1 Peak-cut control device
03/21/2013CA2846208A1 Device for stable subsea electric power transmission to run subsea high speed motors or other subsea loads
03/21/2013CA2844731A1 Sub-synchronous oscillation damping by shunt facts apparatus
03/20/2013EP2571138A1 Electric power supply system
03/20/2013EP2571130A2 Electric power control apparatus and grid connection system having same
03/20/2013EP2571120A1 Connection device for electric power converters
03/20/2013EP2569847A1 Uninterruptible power supply systems and methods using isolated interface for variably available power source
03/20/2013EP2569844A2 Power supply system for marine drilling vessel
03/20/2013EP2569843A1 A plant for transmitting high voltage dc electric power including overvoltage protection
03/20/2013EP2569842A1 A high voltage dc switchyard with semiconductor switches
03/20/2013EP2569841A2 Uninterruptiple power supply systems and methods supporting load balancing
03/20/2013EP2569840A2 Switching device
03/20/2013CN202818218U Intelligent high-speed magnetic controller for adjustable reactor
03/20/2013CN202818183U Large-and-medium sized middle-and-low voltage motor starting circuit, device and motor
03/20/2013CN202817914U Energy storage access system
03/20/2013CN202817901U Intelligent micro electrical network distribution system
03/20/2013CN202817795U Multistage boosting large-power photovoltaic grid-connected power station
03/20/2013CN202817794U Micro power consumption asynchronous wind generator
03/20/2013CN202817793U Grid-connected grid-disconnected integrated photovoltaic inverter power supply
03/20/2013CN202817792U Micro-source gird connection and power quality control system
03/20/2013CN202817791U Distribution controller used for diesel generator parallel operation load
03/20/2013CN202817790U Control cabinet for box-type generator set
03/20/2013CN202817789U Cloud monitor system for monitoring electric energy quality and electric power system
03/20/2013CN202817788U Grid-connected photovoltaic power generation system
03/20/2013CN202817787U Elevator active energy feedback device
03/20/2013CN202817786U Grid-connected inverter power supply, reactive compensation controller and reactive compensation system
03/20/2013CN202817785U Control circuit of monopole three-phase photovoltaic grid-connected system
03/20/2013CN202817784U Photovoltaic grid connected inverter circuit
03/20/2013CN202817783U Super capacitor and storage battery combined energy storage energy management circuit for photovoltaic grid-connected power generation
03/20/2013CN202817782U Power grid peak and trough power supply type energy-saving device
03/20/2013CN202817781U Peak and valley power consumption balance system
03/20/2013CN202817780U Integrated reactive power compensation device based on magnetically controlled reactor
03/20/2013CN202817779U TCR high voltage dynamic compensation arrangement
03/20/2013CN202817778U High-voltage thyristor control type dynamic reactive compensation control system
03/20/2013CN202817777U Low-voltage dynamic frequency division compensation device
03/20/2013CN202817776U Mobile reactive power compensation device
03/20/2013CN202817775U Voltage regulating and capacitance regulating type integrated reactive power compensation device
03/20/2013CN202817774U Low voltage power network reactive compensation telecontrol system
03/20/2013CN202817773U Three-phase static reactive power compensator based on IGBT
03/20/2013CN202817772U Single-phase static reactive power compensator based on IGBT
03/20/2013CN202817771U Three-phase static reactive power compensator based on high-speed self-closed device
03/20/2013CN202817770U Box body structure of wattless compensation device
03/20/2013CN202817769U Mining dynamic reactive power compensation device
03/20/2013CN202817768U Two-control-three type compound switch
03/20/2013CN202817767U Power system reactive power compensation device
03/20/2013CN202817766U Low voltage wattless automatic control system
03/20/2013CN202817765U Reactive compensation integrated apparatus for integrate distribution box
03/20/2013CN202817764U Station control device for high-voltage automatic reactive compensation equipment
03/20/2013CN202817763U Intelligent wattles optimization compensation system based on multistage network dynamic domain control electrical network
03/20/2013CN202817762U Water cooling thyristor valve block type submerged arc furnace short net compensating arrangement
03/20/2013CN202817761U Three-phase motor electricity-saving device
03/20/2013CN202817760U Intelligent reactive-power compensation capacitor and intelligent reactive-power compensation system network
03/20/2013CN202817759U Concentration and dispersion combined circuit compensation system
03/20/2013CN202817758U 一种电容柜电路 A capacitive circuit cabinet
03/20/2013CN202817757U Household electricity-saving appliance
03/20/2013CN202817756U Active power filter
03/20/2013CN202817755U Thyristor closed-loop control low-pass passive filter
03/20/2013CN202817753U Microgrid system structure based on comprehensive application and research
03/20/2013CN202817707U A protective circuit of an intelligent low-voltage reactive compensation control system
03/20/2013CN202817690U Anti-misreport island detection system
03/20/2013CN202816623U Feeder line automatic voltage regulation device
03/20/2013CN202816588U Filtering type power-transformer integration system
03/20/2013CN202816571U Magnetic controlled reactor iron core structure for inhibiting harmonic
03/20/2013CN102986113A Charge/discharge control apparatus
03/20/2013CN102986110A A multi-terminal DC transmission system and method and means for control thereof
03/20/2013CN102986109A Power control method, program, and power control device
03/20/2013CN102985318A System and method for subsea power distribution network
03/20/2013CN102983795A TBEA compensation soft starting device used for large power cage type motor
03/20/2013CN102983770A Four-leg parallel inverter and method for compensating zero-sequence current on site with inverter
03/20/2013CN102983668A Flywheel battery generator set
03/20/2013CN102983634A Capacitor-inverter absorption method for regenerative braking energy of vehicle
03/20/2013CN102983620A Auxiliary convertor and parallel connection control method thereof
03/20/2013CN102983595A Interface device for distributed power generation system and power grid and control method of interface device
03/20/2013CN102983594A Control method of grid closed loop operation impact current
03/20/2013CN102983593A Seamless handover control method for microgrid based on intelligent switch
03/20/2013CN102983592A Crowbar device for low voltage ride-through of wind generator set and control method of device
03/20/2013CN102983591A Solar power station with temperature sensors, humidity sensors and illumination sensors on coastal mud flat
03/20/2013CN102983590A System and method for controlling direct power of open-winding brushless double-fed wind driven generator
03/20/2013CN102983589A Control method of grid friendly type distributed power source based on hybrid energy storage
03/20/2013CN102983588A Photovoltaic grid-tied inversion system based on novel grid-tied control algorithm
03/20/2013CN102983587A Wind power generation system with overspeed protection and operation method thereof
03/20/2013CN102983586A High voltage direct current transmission (HVDC) and unified power flow controller (UPFC) system based on three-level inverter voltage source current converter
03/20/2013CN102983585A Control method of intelligent energy storage system
03/20/2013CN102983584A Unified power flow controller used for unbalanced system
03/20/2013CN102983583A Reactive capacitance compensation cabinet
03/20/2013CN102983582A Voltage reactive-power unified compensator and control method and control system thereof
03/20/2013CN102983581A 无功补偿控制装置 Reactive power compensation control device
03/20/2013CN102983580A Intelligent mixed type high-pressure dynamic reactive compensation device
03/20/2013CN102983579A High-power dynamic switching unit and implementation method thereof
03/20/2013CN102983578A Medium voltage distribution network reactive power counterbonification method
03/20/2013CN102983577A Convertible static compensator provided with modular multilevel converter structure
03/20/2013CN102983576A Single-phase equivalent circuit of power module for reactive compensation system
03/20/2013CN102983575A Reactive compensation system
03/20/2013CN102983574A On-line weight-changeable control method for multipurpose mixed integer coordinating secondary voltage
03/20/2013CN102983573A Security constraint economic dispatch method based on security domains
03/20/2013CN102983572A Extraction method for harmonic and reactive current
03/20/2013CN102983571A Harmonic transfer type three-phase harmonic elimination circuit