ANOMALY DETECTION DEVICE FOR A PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR
    2.
    发明公开
    ANOMALY DETECTION DEVICE FOR A PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR 审中-公开
    ÖRENGSNKENNUNGSVORRICHTUNGFÜREINEN SYNCHRONEN PERMANENTMAGNETELEKTROMOTOR

    公开(公告)号:EP2472716A1

    公开(公告)日:2012-07-04

    申请号:EP10811984.3

    申请日:2010-08-27

    IPC分类号: H02P5/74 H02P21/00 H02P27/04

    摘要: Under a condition that rotor rotation speeds (ωes are equal, winding wire currents Id, Iq are equal, and winding wire inductances Ld, Lq are equal in first and second electric motors 1, 2, a magnet temperature anomaly detector 30 provided in a microcomputer 5 calculates a change ratio d(|Φml-Φmr - Φmr|)/dt of a magnetic flux difference between the first and second electric motors 1, 2 based on the difference Vql* - Vqr* between a q-axis voltage command value Vqr* corresponding to the first electric motor 1 and a q-axis voltage command value Vqr corresponding to the second electric motor 2, and then when the change ratio d(|Φml - Φmr|)/dt of the magnetic flux difference is more than a predetermined threshold Sh1, it is determined that a permanent magnet of at least any one of the electric motors 1, 2 has a temperature anomaly.

    摘要翻译: 在转子旋转速度(ées相等的情况下,绕组线电流Id,Iq相等,并且绕组线电感Ld,Lq在第一和第二电动机1,2中相等,设置在微计算机中的磁体温度异常检测器30 5根据q轴电压之间的差值Vql * -Vqr *计算第一和第二电动机1,2之间的磁通差的变化率d(| | ml-| mr-| mr |)/ dt 对应于第一电动机1的指令值Vqr *和对应于第二电动机2的q轴电压指令值Vqr,然后当磁通量的变化率d(| | ml-| mr |)/ dt 差异超过预定阈值Sh1,则确定电动机1,2中的至少任一个的永久磁铁具有温度异常。