| 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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| 02/06/2008 | CN201018419Y Multi-level frequency conversion driving apparatus with energy conservation unit |
| 02/06/2008 | CN201018418Y Liftable current type AC-AC convertor |
| 02/06/2008 | CN201018417Y Frequency converter suitable for intermediate frequency AC permanent-magnet generator |
| 02/06/2008 | CN201018408Y High power factor low harmonic power source switching device |
| 02/06/2008 | CN201017254Y Direct current constant voltage constant current source special for high voltage velocity modulated valve device |
| 02/06/2008 | CN201017251Y Electric capacity voltage dividing type DC voltage-stabilized power supply |
| 02/06/2008 | CN101120504A Safety interlock and protection circuit for permanent magnet motor drive |
| 02/06/2008 | CN101119090A High voltage synchronous machine whole digitization vector control device |
| 02/06/2008 | CN101119074A Electric network electric voltage drop generator |
| 02/06/2008 | CN101119073A Control method for direct power converter |
| 02/06/2008 | CN101117097A Gate circuit transistor controlling series transformer type electrified railway dragging net pressure-regulating-apparatus |
| 02/06/2008 | CN100367646C Single/three phase impedance source up/down voltage A/A converter |
| 02/06/2008 | CN100367641C Power source |
| 02/06/2008 | CN100367592C Detecting and protecting method and device for exception of circuit |
| 02/05/2008 | US7327587 System and method for power conversion |
| 01/31/2008 | WO2007139800A3 Carrier-based pulse-width modulation (pwm) control for matrix converters |
| 01/31/2008 | US20080025058 Automatic power adapter |
| 01/31/2008 | DE10228988B4 Resonant schaltender Umrichter Resonant switching inverter |
| 01/30/2008 | EP1882400A2 Method and circuit for enabling dimming using triac dimmer |
| 01/30/2008 | EP1882297A1 Variable-frequency drive with regeneration capability |
| 01/30/2008 | EP1882296A1 Variable speed drive for a chiller system |
| 01/30/2008 | EP1247329B1 Method for controlling bi-directional switches in matrix converters |
| 01/30/2008 | CN101114799A Power supply equipment using half-bridge type circuit |
| 01/30/2008 | CN101114798A Power source adapting device and method |
| 01/30/2008 | CN100364683C Die cushion drive system |
| 01/24/2008 | US20080019155 Uninterruptible power supply with low leakage current |
| 01/24/2008 | US20080019154 Power factor correction control circuit |
| 01/24/2008 | DE102007021930A1 Switching method for main power switch of inverter system, involves two intermediating voltage converter unit, each intermediate voltage circuits have precharging device, which are linked with auxiliary voltage source |
| 01/24/2008 | DE102006027716B3 Ansteuerung mit Wechselrichtern bei geringen Schaltverlusten Control with inverters at low switching losses |
| 01/23/2008 | CN201011711Y Frequency convertor voltage current signal providing circuit |
| 01/23/2008 | CN101110564A Air conditioner with plurality of indoor units and its control method |
| 01/23/2008 | CN101110563A One with many air conditioner |
| 01/23/2008 | CN101110562A Air conditioner with plurality of indoor units and its operating control method |
| 01/23/2008 | CN101110553A Power supply apparatus using coil |
| 01/23/2008 | CN100364223C Power supply system and air conditioning device |
| 01/23/2008 | CN100364200C Power converter |
| 01/22/2008 | US7321835 Method for improving the mode of operation of a matrix converter |
| 01/22/2008 | US7321500 Electric power converter |
| 01/17/2008 | WO2008006683A1 Method for switching on an inverter system having a plurality of link-voltage converter units |
| 01/17/2008 | WO2008006406A1 External electrical energy supply for a field device |
| 01/17/2008 | WO2004091087B1 Energy saving electrical power control device and method |
| 01/17/2008 | US20080013353 Frequency converter assembly and method of using frequency converter assembly |
| 01/17/2008 | US20080013346 Active clamp resonance control |
| 01/17/2008 | DE102006033046A1 Anordnung und Verfahren zum Versorgen von Verbrauchern in einem Schienenfahrzeug Arrangement and method for supplying consumers in a railway vehicle, |
| 01/17/2008 | DE102006016501A1 Power semiconductor module e.g. insulated gate bipolar transistor six pack, for use in condenser less voltage link frequency converter, has one connection pin connected with negative direct current cable using additional cable |
| 01/16/2008 | CN201008126Y High-power intelligent voltage regulating device |
| 01/16/2008 | CN201008125Y Active clamp magnetic integrated transducer |
| 01/16/2008 | CN201007962Y Electric tools speed regulation switch |
| 01/15/2008 | US7319600 Apparatus for supplying power and liquid crystal display having the same |
| 01/15/2008 | US7319206 Method and apparatus for receiving a universal input voltage in a welding power source |
| 01/10/2008 | DE102006042385B3 Converter frequency changer controlling method involves determining voltage, which drops over series connection, where power semiconductors of quantity are switched-off and remaining power semiconductors of other quantity are switched-on |
| 01/10/2008 | DE102006031662A1 Stromrichterschaltungsanordnung für eine Hochvoltgleichspannungsverbindung Converter circuit arrangement for a high voltage direct voltage connection |
| 01/09/2008 | EP1876696A2 Converter switching assembly for a high voltage direct current connection |
| 01/09/2008 | EP1875593A2 Method and device for using wind energy |
| 01/09/2008 | EP1875513A2 Controllable semiconductor diode, electronic component and indirect voltage converter |
| 01/09/2008 | CN201004605Y Special middle frequency conversion power supply device |
| 01/09/2008 | CN201003466Y 1.5MW direct-drive type variable speed constant frequency wind-driven generator group |
| 01/09/2008 | CN201003465Y 1.5MW double-feedback type variable speed constant frequency wind-driven generator group |
| 01/09/2008 | CN101102085A Power converter circuit for a high-voltage direct voltage connection |
| 01/09/2008 | CN101102047A An integrated power-saving protection control system |
| 01/09/2008 | CN101102046A An integrated power-saving protection control system |
| 01/09/2008 | CN101102045A An integrated power-saving protection control system |
| 01/09/2008 | CN101102044A An integrated power-saving protection control system |
| 01/09/2008 | CN100361380C Induction heating or melting power supply utilizing a tuning capacitor |
| 01/08/2008 | US7317998 Method for the calculation and the assessment of the frequency spectrum of a matrix converter |
| 01/08/2008 | US7317625 Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction |
| 01/08/2008 | US7317292 AC motor control method and control device |
| 01/03/2008 | WO2008002566A2 High voltage power supply |
| 01/03/2008 | WO2008000908A1 Multi-function passive frequency mixer |
| 01/03/2008 | WO2008000907A1 Passive amplification of signals |
| 01/03/2008 | WO2008000906A1 Multi-function passive frequency mixer |
| 01/03/2008 | WO2008000626A1 Hvdc system and method to control a voltage source converter in a hvdc system |
| 01/03/2008 | DE102006029502A1 Sine wave light-adjusting apparatus for lamp, has negative semi-period flywheel unit, connected with energy-storing unit and lighting unit, which is controlled by microprocessor to conduct during negative semi-period of sine wave voltage |
| 01/03/2008 | DE102004042312B4 Stromversorgungseinrichtung A power supply device |
| 01/03/2008 | CA2656526A1 High voltage power supply |
| 01/02/2008 | EP1482621B1 Uninterruptive power source apparatus |
| 01/02/2008 | CN201001089Y Power supply device |
| 01/02/2008 | CN201001087Y Electricity-saving equipment dedicated for intelligent heating |
| 01/02/2008 | CN201001086Y Electricity supply system |
| 01/02/2008 | CN101098108A Electric power transformation device and method |
| 01/02/2008 | CN101098107A High-voltage frequency converter of power unit series |
| 01/02/2008 | CN101098079A Electric power supply apparatus and method of synchronously operating power converter |
| 01/02/2008 | CN100359778C Voltage compensation device |
| 01/01/2008 | US7315464 Drive system and AC conversion device |
| 01/01/2008 | US7315463 Apparatus and method for multi-phase transformers |
| 01/01/2008 | US7315462 Stabilized power supply |
| 01/01/2008 | US7315151 Method and apparatus for electronic power control |
| 12/27/2007 | WO2007147678A2 Method of controlling a three level converter |
| 12/27/2007 | US20070295703 Method And Apparatus For Receiving A Universal Input Voltage In A Welding Power Source |
| 12/26/2007 | EP1870994A1 Power supply for electrostatic precipitator |
| 12/26/2007 | EP1870993A1 Method of controlling a three level converter |
| 12/26/2007 | EP1692757B8 Device for power adjustment by phase control and method for reduction of harmonic waves |
| 12/26/2007 | CN200997570Y Electric transformer |
| 12/26/2007 | CN200997569Y Frequency-variable and voltage-adjusting power supply |
| 12/26/2007 | CN200997568Y Electric switch controlling structure of power supplier |
| 12/26/2007 | CN200997567Y Power-supply adapter |
| 12/26/2007 | CN200997566Y Electric transformer |
| 12/26/2007 | CN101093963A Power supply for electrostatic precipitator |
| 12/26/2007 | CN101093962A AC frequency conversion device in large power of traction system of coal cutter |
| 12/25/2007 | US7313007 Power factor correction controller |