A power conversion device may include a first inverter to which a first end of each phase winding is coupled; a second inverter to which a second end of each phase winding is coupled; a plurality of switching elements provided in the first and second inverters; a control circuit structured to perform n-phase conduction control on the first and second inverters; and a detection circuit structured to detect a failure in the switching elements. The control circuit is structured such that, when the detection circuit has detected a failure in any of the plurality of switching elements, the control circuit changes the control of the first and second inverters from the n-phase conduction control to m-phase conduction control using m phases of the n phases different from the phase of a winding coupled to the failed switching element, m being an integer not smaller than two and smaller than n.


    Access

    Download


    Export, share and cite



    Title :

    Power conversion device, motor drive unit, and electric power steering device


    Contributors:
    WADA EIJI (author)

    Publication date :

    2020-02-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge / 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



    POWER CONVERSION DEVICE, MOTOR DRIVE UNIT, AND ELECTRIC POWER STEERING DEVICE

    KITAMURA TAKASHI / WADA EIJI | European Patent Office | 2018

    Free access

    POWER CONVERSION DEVICE, MOTOR DRIVE UNIT, AND ELECTRIC POWER STEERING DEVICE

    OHASHI HIROMITSU | European Patent Office | 2018

    Free access

    POWER CONVERSION DEVICE, MOTOR DRIVE UNIT, AND ELECTRIC POWER STEERING DEVICE

    OHASHI HIROMITSU | European Patent Office | 2018

    Free access

    POWER CONVERSION DEVICE, MOTOR DRIVE UNIT, AND ELECTRIC POWER STEERING DEVICE

    WADA EIJI / OHASHI HIROMITSU | European Patent Office | 2019

    Free access

    POWER CONVERSION DEVICE, MOTOR DRIVE UNIT, AND ELECTRIC POWER STEERING DEVICE

    GHADERI AHMAD | European Patent Office | 2018

    Free access