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    • 10. 发明授权
    • Motor driving system and controlling method of the same
    • 电机驱动系统及其控制方法相同
    • US08115423B2
    • 2012-02-14
    • US12227555
    • 2006-08-10
    • Hideto HanadaHiroyuki Oyanagi
    • Hideto HanadaHiroyuki Oyanagi
    • H02P1/54
    • H02P3/18B60L11/18H02P5/74Y02T10/642Y02T10/7005
    • A plurality of current sensors are provided to correspond to a plurality of inverter circuits for driving a plurality of motor generators, respectively. Zero point adjustment of each current sensor is executed in a non-energized state recognized based on a stop of operation of the corresponding inverter circuit and when noise influence is determined to be small based on stops of operations of the other inverter circuits in the same casing. As a result, it is possible to avoid a risk of performing the zero point adjustment in a state in which an output of the current sensor is not exactly a value corresponding to zero current due to the noise influence from the other inverter circuits. In this way, it is possible to highly accurately execute the zero point adjustment of the current sensor for measuring motor driving current.
    • 提供多个电流传感器以对应于分别用于驱动多个电动发电机的多个逆变器电路。 每个电流传感器的零点调整在基于相应的逆变器电路的停止操作识别的非通电状态下执行,并且当噪声影响被确定为小时,基于在同一壳体中的其它逆变器电路的停止操作 。 结果,可以避免在由于来自其它逆变器电路的噪声影响而导致电流传感器的输出不是正好相当于零电流的值的状态下进行零点调整的风险。 以这种方式,可以高精度地执行用于测量电动机驱动电流的电流传感器的零点调整。