An inverter for an electric vehicle drive has a bridge including a plurality of power switching devices having respective insulated gate terminals and emitter terminals. A PWM circuit determines switching commands for controlling the bridge. A plurality of gate drivers receive the switching commands and provide gate drive signals to respective gate terminals. A plurality of gate capacitors are each thermally coupled to a respective switching device and are electrically connected between the respective gate and emitter terminals. Each gate capacitor has a negative temperature coefficient adapted to counter changes in a switching speed of the switching devices over a predetermined range of temperature. As a result, a consistent switching speed is maintained so that power loss and switching device reliability are optimal across the full temperature range.


    Access

    Download


    Export, share and cite



    Title :

    Sensorless temperature compensation for power switching devices


    Contributors:
    LU XI (author) / CHEN CHINGCHI (author) / DEGNER MICHAEL W (author) / XU ZHUXIAN (author) / ZOU KE (author)

    Publication date :

    2018-11-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / H03K PULSE TECHNIQUE , Impulstechnik



    SENSORLESS TEMPERATURE COMPENSATION FOR POWER SWITCHING DEVICES

    LU XI / CHEN CHINGCHI / DEGNER MICHAEL W et al. | European Patent Office | 2018

    Free access

    PIECEWISE TEMPERATURE COMPENSATION FOR POWER SWITCHING DEVICES

    LU XI / CHEN CHINGCHI / DEGNER MICHAEL W et al. | European Patent Office | 2018

    Free access


    Sensorless Optimal Switching Impact/Force Controller

    Roveda L. / Riva D. / Bucca G. et al. | BASE | 2021

    Free access

    Sensorless Load Compensation Apparatus and Method of Elevator

    JEONG HYEON HO / CHUNG MOO TAEK | European Patent Office | 2024

    Free access