A magnetic force estimating unit (38) for estimating the magnetic force of a permanent magnet of a rotor of a motor (6), a determining unit (39), and a demagnetization responsive timing changing unit (40) are provided in an inverter device (22) or an electric control unit (21). The magnetic force estimating unit (38) performs a determination of the magnetic force with a predetermined rule from detection signals of at least two of the motor rotation number, motor voltage and motor current. The determining unit (39) determines whether or not a demagnetization occurs. In response to the result of determination by the determining unit (39), the demagnetization responsive timing changing unit (40) changes the timing, at which the maximum electric current relative to the phase of the rotor is fed, so that with respect the motor drive by the inverter device the reluctance torque of the motor may be increased.


    Access

    Download


    Export, share and cite



    Title :

    Motor control device for electric automobile


    Contributors:

    Publication date :

    2015-10-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



    Electric automobile motor control device

    MA SHENTONG | European Patent Office | 2015

    Free access

    Electric automobile motor controller, motor control method and electric automobile

    WANG LIBIN / CHEN SANCHENG | European Patent Office | 2020

    Free access

    MOTOR CONTROL DEVICE FOR ELECTRIC AUTOMOBILE

    OZAKI TAKAYOSHI | European Patent Office | 2019

    Free access

    MOTOR CONTROL DEVICE FOR ELECTRIC AUTOMOBILE

    OMORI TAMOTSU | European Patent Office | 2016

    Free access

    Motor control method and device of electric automobile and electric automobile

    DANG LIUJI / LI JINGJING / ZHOU QIANG et al. | European Patent Office | 2020

    Free access