An electric drive system includes a direct current (DC) power supply, a rotary electric machine connectable to a load, a power inverter module (PIM), and a controller. The PIM includes a bulk capacitor connected to the DC power supply, along with a plurality of power switches. Each power switch has an output side connected to the electric machine and an input side connected to the bulk capacitor. The controller executes a method to estimate an internal temperature of the bulk capacitor as an estimated internal temperature. This occurs in response to an enabling condition. The controller then selectively derates the electric machine in response to the estimated internal temperature.


    Access

    Download


    Export, share and cite



    Title :

    SELECTIVE MOTOR DERATING USING ESTIMATED INTERNAL TEMPERATURE OF INVERTER BULK CAPACITOR


    Contributors:
    DAY DYLAN M (author) / FROM MATTHEW (author) / KIM YOUNG J (author) / BERRY DANIEL J (author)

    Publication date :

    2024-07-18


    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



    Derating vehicle electric drive motor and generator components

    HENDRICKSON MATTHEW / XIE BO | European Patent Office | 2015

    Free access

    Derating vehicle electric drive motor and generator components

    HENDRICKSON MATTHEW / XIE BO | European Patent Office | 2017

    Free access

    Adaptives Derating

    ENGELHARDT TOBIAS | European Patent Office | 2018

    Free access

    Brake power derating

    KURAS BRIAN D / SHARMA ANKIT / COWPER LANCE M | European Patent Office | 2022

    Free access

    BRAKE POWER DERATING

    KURAS BRIAN D / SHARMA ANKIT / COWPER LANCE M | European Patent Office | 2021

    Free access