The present invention provides a permanent-magnet three-phase duplex motor and an electric power steering apparatus that includes that motor that can ensure motor performance that is equal to normal levels when failure of one system occurs, without increasing motor body dimensions. A permanent-magnet three-phase duplex motor according to the present invention is provided with two systems, namely a system that includes a first three-phase winding and a first inverter circuit, and a system that includes a second three-phase winding and a second inverter circuit, and a controlling apparatus is configured such that when one system fails, the controlling apparatus stops operation of the inverter circuit of the failed system, and controls operation of the inverter circuit of the normal system to increase the driving current that is supplied from the inverter circuit of the normal system, and the first three-phase winding and the second three-phase winding are configured such that magnetic fields that act on the permanent magnets in a demagnetizing direction when the increased driving current is supplied from the inverter circuit of the normal system are equal to magnetic fields that normally act on the permanent magnets in the demagnetizing direction.


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    Title :

    PERMANENT MAGNET THREE-PHASE DUPLEX MOTOR AND ELECTRIC POWER STEERING DEVICE


    Additional title:

    DREIPHASIGER PERMANENTMAGNETDUPLEXMOTOR UND ELEKTRISCHE SERVOLENKVORRICHTUNG
    MOTEUR DUPLEX TRIPHASÉ À AIMANT PERMANENT ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE


    Contributors:

    Publication date :

    2018-10-24


    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 / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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