| Patents for H02P 13 - Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output (981) |
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| 05/12/2010 | CN201467058U Voltage regulating and energy saving circuit of power transformer |
| 05/12/2010 | CN201467057U Electronic transformer on-load voltage regulation converter |
| 05/12/2010 | CN1402098B Volt-second clamp circuit power supply device |
| 05/12/2010 | CN101707469A Transformer operation control system based on RISC chip |
| 05/05/2010 | EP2181499A1 Method and device to compensate for an asymmetrical dc bias current in a power transformer connected to a high voltage converter |
| 05/05/2010 | CN101702511A Intelligent oil-immersed transformer |
| 04/29/2010 | WO2010045995A2 Method for parallel control of transformers having step switches |
| 04/29/2010 | DE102008053193A1 Verfahren zur Parallelsteuerung von Transformatoren mit Stufenschaltern A method for parallel control of transformers with tap changers |
| 04/28/2010 | CN201444617U Electromagnetic voltage-stabilizing and electricity-saving device |
| 04/28/2010 | CN201444443U Transformer capable of controlling part of voltage |
| 04/28/2010 | CN101010848B Method and device for electric power flow control in high-voltage grid |
| 04/21/2010 | CN201440360U Reactor for accurate tuning used for passive filter |
| 04/21/2010 | CN101697474A Remote automatic control method of high-voltage shut reactor considering safety of system voltage |
| 04/14/2010 | CN1766667B Method for measuring switch time of multi-contact switch and switch time measuring circuit |
| 04/14/2010 | CN101694808A Transcoding method for denary shift of transformer on-load tap-changer and transcoder |
| 04/08/2010 | DE202009014788U1 Selbstregulierender Transformator Self-regulating transformer |
| 04/07/2010 | CN101692577A 磁控电抗器 Magnetic chokes |
| 04/01/2010 | DE102008049234A1 Electrical machine for use as e.g. electric motor, in motor vehicle, has winding functionally separated from electrical machine, where winding is partly arranged in recess of stator and/or in yoke of stator and/or at exterior of stator |
| 03/31/2010 | CN201435709Y Drive transformer circuit simultaneously providing control power supply |
| 03/31/2010 | CN201435287Y Adjustable inductor used for resonance circuit |
| 03/30/2010 | CA2422689C Wide ratio autotransformer-type current ranging |
| 03/24/2010 | CN201430069Y Efficient and energy-saving transformer |
| 03/16/2010 | CA2428475C Thyristor tap changer |
| 02/17/2010 | CN201409110Y Controllable transformer |
| 02/10/2010 | CN201402985Y Low-voltage cabinet dry-type magnetically controlled reactor |
| 02/04/2010 | DE102009031818A1 Dynamisches Auskopplungssystem Dynamic coupling system |
| 02/03/2010 | CN201398172Y Novel MCR magnetic control box |
| 01/20/2010 | CN201387564Y Control circuit |
| 01/20/2010 | CN101630937A Control method and control device of extra-high voltage controllable shunt reactor |
| 12/30/2009 | CN201374676Y Energy-saving control device of low-frequency transformer |
| 12/30/2009 | CN101615882A Real-time closed-loop automatic control method for power transformer |
| 12/23/2009 | CN201369705Y Transformer with partial winding voltage adjustment |
| 12/23/2009 | CN101609742A Self-energy-taking rapid-response controllable reactor |
| 12/17/2009 | DE102008028139A1 Electrical network i.e. three-phase electrical network, managing method for coupling power station with local network, involves increasing or decreasing load current in branches by changing current supplied to superconductive secondary coil |
| 12/16/2009 | CN101604951A Method for adapting transformer for different voltage stages and system thereof |
| 12/16/2009 | CN100570767C Controlled reactor with compensation winding |
| 12/16/2009 | CN100570766C External electric supply controllable reactor |
| 12/16/2009 | CN100570765C Self-feeding controllable transductor |
| 11/25/2009 | CN201352491Y Adjustable magnetic hollow filter reactor |
| 11/19/2009 | WO2009137908A1 Voltage regulation system |
| 11/19/2009 | CA2724382A1 Voltage regulation system |
| 11/17/2009 | CA2174568C Interconnection system for transmitting power between electrical systems |
| 11/12/2009 | DE102008015819B3 Regulator for regulating alternating voltage, has secondary winding comprising non-switchable section and multiple switchable sections, where number of windings of non-switchable section and switchable sections is equal |
| 10/28/2009 | CN201333582Y Winding coil current modulation welding machine |
| 10/28/2009 | CN101567658A Rotating transformer exciting circuit based on sinusoidal pulse width modulation (SPWM) |
| 10/28/2009 | CN100554037C Outer rear-view mirror unit for a motor-vehicle with shape memory actuating means |
| 10/21/2009 | CN201332380Y Controlling and triggering device for magnetic valve type adjustable reactor |
| 10/21/2009 | CN100553110C Controller for inductive load current |
| 10/21/2009 | CN100553092C Device for minimizing transformer saturation caused by power transfer in a communication system |
| 10/15/2009 | DE102008011609A1 Standby-circuit for transformer power supply unit in small device for household and industry, has switching device adjusting normal operation of transformer and standby-operation of transformer during existence of control signals |
| 10/14/2009 | CN201328102Y Secondary-side control device of transformer |
| 10/14/2009 | CN201328101Y Safe and reliable outer exciting magnetic control electric reactor device |
| 09/23/2009 | CN100544187C Intelligent type inductive coil electric parameter N steps tuning method as well as product |
| 09/09/2009 | CN101527516A Voltage varying-regulating circuit, voltage varying-regulating set and intelligent electricity-saving device |
| 09/08/2009 | US7586216 Redundant electrical brake and protection system for electric generators |
| 09/02/2009 | CN201303309Y Multi-functional energy-saving transformer for oil pumping unit in oil field |
| 08/19/2009 | CN201294482Y Economic operation intelligent control device for distribution transformer |
| 08/19/2009 | CN201293951Y Full-automatic AC voltage compensator |
| 08/12/2009 | CN101507099A A drive system for a tap changer |
| 07/15/2009 | EP1325394B1 Wide ratio autotransformer-type current ranging |
| 06/25/2009 | DE102007021691A1 Method for controlling alternating voltage comprises using a secondary number of turns of a transformer which is proportional to the rotary angle of a controller and reversibly proportional to the potential difference along a turn |
| 05/27/2009 | CN201247683Y Controller for loading capacitance-regulating distribution transformer |
| 05/27/2009 | CN101442288A Intelligent charger |
| 05/27/2009 | CN101442261A Single-phase universal multifunctional intelligent electricity-saving device |
| 05/26/2009 | CA2605280C Method and device for prevention and protection of electrical transformer against explosion and fire |
| 05/06/2009 | EP2054998A1 A drive system for a tap changer |
| 04/30/2009 | US20090109712 Capacitor based energy storage |
| 04/29/2009 | CN201230299Y Combination type multi-stage loaded capacity regulating box type transformer plant |
| 04/29/2009 | CN201230213Y Magnet controlled voltage regulating reactive automatic compensation device |
| 04/22/2009 | CN101416134A Universal input device for a tap changer |
| 04/08/2009 | CN201219240Y Illumination energy-saving voltage stabilizer without bypass power-off |
| 04/08/2009 | CN101403933A Full-automatic alternating current voltage compensator |
| 03/25/2009 | CN201213083Y Dry type magnet controlled reactor |
| 03/18/2009 | CN101388277A Transformer and mutual inductance value regulating method |
| 03/11/2009 | CN101383220A Dry magnet controlled reactor |
| 03/05/2009 | WO2009026968A1 Method and device to compensate for an asymmetrical dc bias current in a power transformer connected to a high voltage converter |
| 03/05/2009 | WO2009026629A1 Transformer control circuit |
| 03/04/2009 | EP2031750A2 Switching device for switching between two voltage levels of a voltage provider |
| 02/25/2009 | CN101373143A Method for detecting LVDT sensor signal |
| 02/18/2009 | CN201197131Y Magnetic controlled shunt reactor excitation system |
| 01/21/2009 | CN201185404Y Control device for intelligently monitoring and detecting power supply real time |
| 01/14/2009 | CN101345508A Controllable afterflow method and excitation system of magnetic controlled shunt reactor |
| 01/14/2009 | CN101345122A Direct current flux control type adjustable reactor |
| 01/07/2009 | CN201178305Y Excitation branch over-voltage protection apparatus of magnetic control type parallel reactor |
| 01/07/2009 | CN101340153A Arc extinguishing compensating type AC voltage regulating and stabilizing apparatus |
| 12/31/2008 | CN201174679Y Energy saving controller for loaded pressure regulating switch |
| 12/31/2008 | CN201174600Y AC integrated power source apparatus of mobile communication base station |
| 12/24/2008 | CN100446377C TCR controller |
| 12/10/2008 | CN101320954A Combination type multilevel loaded capacity-regulation box type transformer station |
| 11/26/2008 | CN100438317C Method for controlling high voltage transformer of microwave oven |
| 11/26/2008 | CN100437411C System for voltage stabilization of power supply lines |
| 11/20/2008 | US20080286725 Electrical Power Converter for a Simulated Weapon Device |
| 11/19/2008 | CN101309011A Magnet controlled voltage regulating imaginary power automatic compensation method and device |
| 11/13/2008 | DE10331866B4 Einrichtung zur Steuerung einer Spulenanordnung mit elektrisch variierbarer Induktivität, sowie Schaltnetzteil Means for controlling a coil arrangement with electrically diversifiable inductance and switching power supply |
| 11/05/2008 | EP1987409A2 Universal input device for a tap changer |
| 11/05/2008 | CN201146469Y High-power stepless voltage-regulating apparatus |
| 11/05/2008 | CN101299541A Supervoltage magnetic-controlled shunt reactor excitation equipment |
| 10/22/2008 | CN201138787Y Magnetic excitation switching apparatus for electricity driving vibration platform |
| 10/15/2008 | CN201134780Y Novel electric voltage regulating equipment |
| 10/15/2008 | CN101286723A Control method for parellel reactor with ultra-high/extra-high voltage magnetic control type |