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    Control apparatus for electric cars propelled by induction motor
    1.
    发明公开
    Control apparatus for electric cars propelled by induction motor 失效
    Regelgerätfürelektrische Fahrzeuge，angetrieben durch einen Induktionsmotor。

    公开(公告)号：EP0059924A1

    公开(公告)日：1982-09-15

    申请号：EP82101599.7

    申请日：1982-03-02

    申请人： Hitachi, Ltd.

    发明人： Tanamachi, Tokunosuke ,  Ibamoto, Masahiko ,  Terunuma, Matsuhiro ,  Tsuboi, Takashi ,  Suzuki, Katsuaki

    IPC分类号： H02P5/40 ,  B60L9/22

    CPC分类号： B60L9/22 ,  B60L9/005 ,  B60L2200/26 ,  B60L2220/12 ,  H02P23/07

    摘要： Power is supplied from a DC electric car line (1) through an L-C filter (3) to a PWM inverter (4). The three-phase AC output from the inverter (4) is applied to an induction motor (5) for driving an electric car. The output frequency of the inverter (4) is determined by adding or subtracting the slip frequency to or from the speed frequency of car. On the other hand, the output voltage of the inverter (4) is controlled by PWM so that the deviation as a result of comparing the current command to motor and the actual motor current is reduced to zero. In this case, an electric oscillation of current flowing from the DC electric car line (1) to the filter (3) is detected by a CT (13) with an air gap, and the electric oscillation is suppressed by adjusting the output voltage or frequency of the inverter.

    摘要翻译： 电力从直流电动汽车线路（1）通过L-C滤波器（3）提供给PWM逆变器（4）。 逆变器（4）的三相交流输出被施加到用于驱动电动汽车的感应电动机（5）。 变频器（4）的输出频率通过将转差频率加到或减小到汽车的转速频率来确定。 另一方面，逆变器（4）的输出电压由PWM控制，使得将电流指令与电动机的比较以及实际的电动机电流的偏差减小到零。 在这种情况下，通过具有气隙的CT（13）检测从直流电车线（1）流向滤波器（3）的电流的电振荡，通过调节输出电压来抑制电振荡 变频器的频率。