A control device includes a gate-signal generating unit that outputs a gate signal to an inverter circuit and a voltage-vector generating unit that generates a voltage command to the gate-signal generating unit on the basis of a torque command PTR from an upper unit, rotating speed FM of an alternating-current electric motor, and a direct-current voltage value EFC applied to the inverter circuit. The voltage-vector generating unit calculates, on basis of a modulation rate, which is a ratio of the direct-current voltage value EFC and a voltage amplitude command in the voltage command, a PWM current distortion rate serving as an index representing a degree of a current harmonic caused by PWM control, generates the voltage amplitude command value on the basis of the calculated PWM current distortion rate, and outputs the voltage amplitude command value to the gate-signal generating unit.


    Access

    Download


    Export, share and cite



    Title :

    Control device of alternating-current electric motor


    Contributors:

    Publication date :

    2018-10-16


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



    DRIVE CONTROL DEVICE OF ALTERNATING-CURRENT MOTOR

    TSUKIMA MITSURU / KITANAKA HIDETOSHI | European Patent Office | 2016

    Free access

    Alternating-Current Motor Drive for Electric Vehicles

    Krauthamer, S. / Rippel, W. E. | NTRS | 1982


    CONTROL DEVICE FOR ALTERNATING CURRENT ELECTRIC VEHICLE

    MATSUMOTO TAKEO / MATSUDA KOTARO | European Patent Office | 2017

    Free access

    Drive device for an alternating current motor and an electric motor vehicle

    IWAJI YOSHITAKA / KANEKO DAIGO / YAMAMOTO KOUKI | European Patent Office | 2016

    Free access

    Rotating speed control method and device of alternating current motor, alternating current motor and storage medium

    SHI XIAOTING / ZHANG KAI / GU MINGLEI et al. | European Patent Office | 2023

    Free access