| Patents for H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases (13,094) |
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| 05/21/2008 | CN101183833A Hot pipe technique based frequency conversion power unit |
| 05/21/2008 | CN101183832A Numerical control stepless power regulation device with timing function |
| 05/21/2008 | CN101183609A Condenser type non-contact manifold ring and power supply device using the same |
| 05/20/2008 | US7375996 Reduced rating T-connected autotransformer for converting three phase AC voltages to nine/six phase shifted AC voltages |
| 05/15/2008 | WO2008024410A3 Open-ended control circuit for electrical apparatus |
| 05/15/2008 | US20080112196 Portable, variable power supply |
| 05/14/2008 | EP1921738A2 Method and device to control a dc-ac converter, particularly for a wind energy plant |
| 05/14/2008 | EP1921309A2 Method and arrangement in wind power plant |
| 05/14/2008 | EP1920526A1 Converter circuit comprising distributed energy stores |
| 05/14/2008 | CN201061153Y Full power networking convertor for megawatt wind power generation |
| 05/14/2008 | CN201061144Y Dynamic voltage compensator using three single-phase structure |
| 05/14/2008 | CN201058811Y Cascade power and control system of high-power ozone generating apparatus |
| 05/14/2008 | CN101180785A Inverter operation with over-modulation |
| 05/14/2008 | CN101179894A Current changer and driving mechanism of backlight module |
| 05/14/2008 | CN101179255A H-bridge inverter of AC motor |
| 05/08/2008 | US20080104983 Multiphase Current Supplying Circuit, Driving Apparatus, Compressor, And Air Conditioner |
| 05/08/2008 | DE102006050077A1 Umrichter mit steuerbarem Phasenwinkel Inverter with controllable phase angle |
| 05/07/2008 | CN201057634Y Three power level integrated intermediate and high voltage frequency convertor |
| 05/07/2008 | CN101174814A Stepless gear and method of electric motor |
| 05/07/2008 | CN101174798A Control method for matrix transforming machine and its device |
| 05/07/2008 | CN101174794A Power supply circuit and control circuit for use in the same |
| 05/07/2008 | CN100386962C Improved high-voltage large-power frequency converter |
| 05/07/2008 | CN100386961C Full digitalized vector control type high-voltage large-power frequency converter based on DSP chip |
| 05/06/2008 | US7369417 Method and system for producing controlled frequency power from a variable frequency power source |
| 05/06/2008 | US7368879 Pendulum resonant converter and method |
| 05/06/2008 | US7368832 Circuit and fault tolerant assembly including such circuit |
| 05/06/2008 | US7367296 Bi-directional power electronics circuit for electromechanical valve actuator of an internal combustion engine |
| 05/02/2008 | WO2008051623A2 Soft magnetic alloy and uses thereof |
| 05/01/2008 | US20080099653 Anchor rack having a coupling pawl |
| 04/30/2008 | DE102006050624A1 Reactance connecting device for transformer in electric arc furnace, has induction coil and standalone load switch for adjusting reactance of induction coil under load, where induction coil is provided with multiple tapping points |
| 04/30/2008 | CN201054850Y Electronic transformer for halogen lamp |
| 04/30/2008 | CN201054552Y IGBT direct serial connection breaking high-voltage converter |
| 04/30/2008 | CN201054551Y IGBT direct serially connected feedback high-voltage converter |
| 04/30/2008 | CN201054550Y IGBT direct serially connected high-voltage converter |
| 04/30/2008 | CN201054546Y High-voltage frequency converter for calibration circuit |
| 04/30/2008 | CN201053408Y Household electric fan timely speed-variable device |
| 04/30/2008 | CN101171890A Method and circuit for enabling dimming using triac dimmer |
| 04/30/2008 | CN101171741A Power transforming apparatus and power transforming method |
| 04/30/2008 | CN101170282A Inverter current detecotr |
| 04/30/2008 | CN101170281A Ultrasonic bar electric controlled system |
| 04/30/2008 | CN100385782C Multiple-level serially connected high-voltage inverter |
| 04/29/2008 | US7365451 Power converter |
| 04/29/2008 | US7365262 Electronic musical apparatus for transposing musical piece |
| 04/29/2008 | CA2418561C Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control |
| 04/24/2008 | WO2008047374A2 Switched resonant-tank, cell based power converter |
| 04/24/2008 | WO2008046284A1 An energy feedback power unit |
| 04/24/2008 | US20080094864 Polyphase Current Supplying Circuit and Driving Apparatus |
| 04/24/2008 | DE102006050289A1 Power supply device, has power modules with bypass connected with load branch, where bypass is separated from load branch during error free functioning of inverter branch and is connected with load branch during failure of inverter branch |
| 04/23/2008 | EP1914872A1 Wind farm |
| 04/23/2008 | EP1913681A1 Commutation technique for an ac-to-ac converter |
| 04/23/2008 | EP1913454A1 A voltage regulation device |
| 04/23/2008 | CN201051718Y Power unit module with energy feedback device |
| 04/23/2008 | CN201051717Y No contact binary transformer voltage-adjusting power supply |
| 04/23/2008 | CN201051714Y Integrated intelligent environmental power supply device for powering different power devices |
| 04/23/2008 | CN201051713Y A power supply drive board for wind volume varying air-conditioner end |
| 04/23/2008 | CN101166003A Electric tool and power supply power supply system using same |
| 04/23/2008 | CN100384074C Five-level high-voltage frequency converter |
| 04/22/2008 | US7362598 Synchronous rectifier gate drive shutdown circuit |
| 04/22/2008 | US7362077 Pre-charge method for isolated boost converter |
| 04/17/2008 | WO2008044374A1 Method for detecting turn-off of thyristor |
| 04/16/2008 | EP1911150A1 Electric power generation system using a permanent magnet dynamoelectric machine for starting a combustion turbine and for generating uninterruptible excitation power |
| 04/16/2008 | EP1911141A2 Method for improving the operation of a power control circuit and an advanced power control circuit |
| 04/16/2008 | EP1910124A1 Multilevel converter and method of converting a supply voltage |
| 04/16/2008 | EP1606872B1 Power supply unit for a gas discharge process |
| 04/16/2008 | CN201048356Y Quiet power supply of electric clipper |
| 04/16/2008 | CN201048355Y Combined voltage regulator capable of full range control |
| 04/16/2008 | CN201048286Y Open circuit feed circuit |
| 04/16/2008 | CN101162873A Pressure regulating on-off circuit |
| 04/16/2008 | CN101162871A Method for prompting the range of air conditioner accommodating electric network electric voltage and frequency and device thereof |
| 04/10/2008 | WO2008043039A2 Unified control of single and three-phase power converters |
| 04/10/2008 | WO2008042167A2 Power controller having current limited rms voltage regulated output |
| 04/10/2008 | WO2008040131A1 Method and switching arangement for the feedback of commutation energy of three-phase current drive systems with a current intermediate circuit converter |
| 04/09/2008 | EP1909373A1 Wind power plant |
| 04/09/2008 | EP1908163A1 A variable rotor speed wind turbine, wind park, method of transmitting electric power and method of servicing or inspecting a variable rotor speed wind turbine |
| 04/09/2008 | CN101160708A Matrix converter apparatus |
| 04/09/2008 | CN101159425A Elevator staircase group frequency conversion drive united power supply energy-saving operation method and apparatus |
| 04/08/2008 | US7355868 Current sense method for bridgeless boost (BLB) PFC circuit using single current transformer |
| 04/03/2008 | US20080080214 Rectifier circuit and radio communication device using the same |
| 04/03/2008 | US20080080213 Method for smoothing input current to a power delivery system having regeneration capability |
| 04/03/2008 | US20080079400 Generator with high phase order |
| 04/03/2008 | DE102006043941A1 Antriebsenergieversorgung bei Schienenfahrzeugen Driving power supply for rail vehicles |
| 04/02/2008 | EP1906191A2 Three-phase switching assembly and method for operating the switching assembly |
| 04/02/2008 | CN201044424Y Non-sensor vector control frequency converter |
| 04/02/2008 | CN201044423Y Double-power frequency converter |
| 04/02/2008 | CN201044422Y Intelligent general frequency converter |
| 04/02/2008 | CN201044421Y High-voltage pressure regulating return circuit device |
| 04/02/2008 | CN201044420Y Signal experiment intelligent electric power |
| 04/02/2008 | CN201044419Y Multi-interface direct current programmable power supply |
| 04/02/2008 | CN201044416Y Frequency converter special for draught fan and water pump |
| 04/02/2008 | CN201043512Y Inner rotor type aerogenerator starting with low wind velocity |
| 04/02/2008 | CN201042180Y Household electrostatic defrosting device |
| 04/02/2008 | CN101156306A Energy saving electrical power control device and method |
| 03/27/2008 | WO2008036009A1 Hvdc converter |
| 03/27/2008 | WO2007133289A3 Electronic control transformer using dc link voltage |
| 03/27/2008 | DE102006042384A1 Umrichter und Verfahren zur Steuerung eines Umrichters Inverter and method for controlling a converter |
| 03/26/2008 | CN201042099Y Electronic transformer of low-voltage safe lamp for machine tool lighting |
| 03/26/2008 | CN201041984Y Dual three level phase shift high-voltage high-power frequency converter |
| 03/26/2008 | CN201041982Y 功率电子设备 Power Electronics |
| 03/26/2008 | CN101151796A High-phase order generator |
| 03/26/2008 | CN101151791A Bridgeless boost converter with PFC circuit |