To prevent, in a rail vehicle, the degradation of a SiC-MOSFET occurring when power is supplied to an APS in a state in which a converter to which the SiC-MOSFET is applied is stopped. [Solution] In an electric vehicle, this power conversion device converts the AC power, which is acquired from an overhead contact line and stepped down by a transformer, to a DC power by performing the switching control of a plurality of power semiconductor elements using parasitic diodes as free-wheeling diodes. The power conversion device has a control unit for performing the drive control of the gates of the plurality of power semiconductor elements. During stopping of the electric vehicle, the control unit does not perform the switching control but conducts current in the reverse direction of the power semiconductor elements and applies a predetermined voltage pulse for converting the AC power to the DC power to the power semiconductor elements.


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    Title :

    POWER CONVERSION DEVICE AND POWER CONVERSION METHOD


    Additional title:

    LEISTUNGSUMWANDLUNGSVORRICHTUNG UND LEISTUNGSUMWANDLUNGSVERFAHREN
    DISPOSITIF DE CONVERSION DE PUISSANCE ET PROCÉDÉ DE CONVERSION DE PUISSANCE


    Contributors:

    Publication date :

    2024-03-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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