低频信号注入法的永磁同步电机无速度传感器控制被引量：1

Speed sensorless control of permanent magnet synchronous motor based on low-frequency signal injection

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摘要针对永磁同步电机(PMSM)无速度传感器矢量控制方法中低速时反电动势过小,无法获得准确的估计转速的问题,采用在d轴注入低频定子电流的方法来估计电机转速。仿真结果证明了该无速度传感器估算方法在永磁同步电机低速运行中的正确性和有效性,并且具有控制结构简单且对参数误差不敏感的特点。 To solve the problem of the too small back-EMF to get the estimated speed at low speed in the permanentmagnet synchronous motor （PMSM） sensorless vector eontrol, the method of injecting low-frequency current signal at d-axis is used to estimate speed. The simulation results show the validity and effectivity of this method at low speed and this method is simple at control structure and insensitive to motor parameter errors.

作者徐艳平郜亚秋钟彦儒

机构地区西安理工大学自动化与信息工程学院

出处《电气传动自动化》 2010年第1期13-16,共4页 Electric Drive Automation

关键词永磁同步电机无速度传感器低频信号注入矢量控制 permanent magnet synchronous motor speed sensorless low-frequency signal injection vector control

分类号 TM341 [电气工程—电机]

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参考文献4

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