The invention relates to an active discharge closed-loop control circuit for a motor controller of an electric vehicle. The active discharge closed-loop control circuit comprises a bus capacitor arranged between the positive electrode and the negative electrode of a direct-current bus, a discharge resistor and a switch tube which are connected in series at the two ends of the bus capacitor in parallel, and a sampling comparison control assembly for controlling the PWM duty ratio of the switch tube, wherein the sampling comparison control assembly sequentially comprises a voltage sampling comparison unit, a current sampling comparison unit and a PWM duty ratio control unit. Compared with the prior art, the active discharge closed-loop control circuit has the advantages of double closed-loop control, stable discharge power and the like.

    本发明涉及一种电动汽车电机控制器主动放电闭环控制电路,包括设置在直流母线正极和负极间的母线电容以及并联在母线电容两端串联连接的放电电阻器和开关管,该控制电路还包括控制开关管的PWM占空比的采样比较控制组件,该采样比较控制组件依次包括电压采样比较单元、电流采样比较单元和PWM占空比控制单元。与现有技术相比,本发明具有双闭环控制、放电功率稳定等优点。


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    Titel :

    Active discharge closed-loop control circuit of electric vehicle motor controller


    Weitere Titelangaben:

    一种电动汽车电机控制器主动放电闭环控制电路


    Beteiligte:
    NIE SU (Autor:in) / ZHU ZHIYONG (Autor:in)

    Erscheinungsdatum :

    2021-05-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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