Method and apparatus for diagnosing a motor control circuit in a hybrid vehicle
    9.
    发明授权
    Method and apparatus for diagnosing a motor control circuit in a hybrid vehicle 有权
    用于诊断混合动力车辆中的电机控制电路的方法和装置

    公开(公告)号:US08054083B2

    公开(公告)日:2011-11-08

    申请号:US12392603

    申请日:2009-02-25

    IPC分类号: G01R31/00

    摘要: A hybrid electric vehicle (HEV) has an algorithm for executing a method for diagnosing a high-voltage (HV) fault condition aboard the HEV. The HEV includes a high-voltage (HV) battery, an auxiliary power module (APM), a power inverter module (PIM), and a three-phase motor/generator unit (MGU). A controller executes the method to thereby measure a DC output current from the HV battery, a DC inlet current into the APM, and a pair of AC phase currents in the MGU. The method further includes calculating a DC inlet current into the PIM using the AC phase currents, diagnosing the HV fault condition using the DC output currents and the DC inlet currents, and executing a control action in response to the diagnosed condition. The method can include shutting off the APM to determine whether the APM is the root cause of the HV fault condition.

    摘要翻译: 混合电动汽车(HEV)具有执行用于诊断HEV上的高压(HV)故障状况的方法的算法。 HEV包括高压(HV)电池,辅助电源模块(APM),电力逆变器模块(PIM)和三相电动机/发电机组件(MGU)。 控制器执行该方法,从而测量来自HV电池的直流输出电流,进入APM的直流入口电流和MGU中的一对AC相电流。 该方法还包括使用AC相电流计算进入PIM的直流入口电流,使用DC输出电流和DC入口电流诊断HV故障状况,以及响应于诊断条件执行控制动作。 该方法可以包括关闭APM以确定APM是否是HV故障状态的根本原因。