A multi-motor electrical system for a motor vehicle or another host system includes a plurality of inverter circuits connected to the battery pack, a plurality of electric motors connected to the battery pack via a corresponding one of the inverter circuits, and an electronic controller. In response to predetermined entry conditions, the controller is configured to perform a method by which the controller monitors respective motor temperatures of the motors, selectively injects respective direct-axis (d-axis) currents into the motors via manipulation of a corresponding d-axis voltage command thereto, and generates an alternating current (AC) battery current via simultaneous operation of the electric motors using the d-axis currents. The controller heats the battery pack using the AC battery current by coordinating an injection of the d-axis currents, such that the respective motor temperatures do not exceed a predetermined motor temperature limit.


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    Title :

    ALTERNATING CURRENT BATTERY HEATING IN ELECTRICAL SYSTEM HAVING MULTIPLE ELECTRIC MOTORS



    Publication date :

    2025-05-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



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