A simplified high frequency injection method for PMSM sensorless control
A simplified high frequency injection method for PMSM sensorless control
复制标题
PMSM 无传感器控制的简化高频注入方法
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Yongdong Li
中科院分区：
文献类型：
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作者：
Hao Zhu;Xi Xiao;Yongdong Li
提出了一种用于永磁同步电机无位置传感器控制的简化高频注入法。所讨论的高频注入方案利用电机磁凸极特性，其中包含由于磁体饱和而导致的转子位置的信息。高频电压信号被注入到d轴绕组中，以检测磁凸极并估计转子位置。然后用滤波器分析电机d轴电流，提取转子位置信息。该方法省去了信号处理环路中的带通滤波器，避免了带通滤波器的相移和幅值下降。因此，使用比那些常规HF注入方案更少的滤波器。仿真和实验结果的基础上提出的控制策略的分析。
This paper presents a simplified HF injection method for permanent magnet synchronous motor (PMSM) sensorless control. The discussed HF injection scheme utilizes motor magnetic saliency property which contains the information of the rotor position due to magnet saturation. A high frequency voltage signal is injected into the d-axis winding in order to detect the magnetic saliency and estimate the rotor position. Then filters are used to analyze motor d-axis current and to extract rotor position information. In the proposed method, a band pass filter used in signal processing loop is omitted in order to avoid its phase shift and magnitude decrease. Thus fewer filters are used than those conventional HF injection schemes. The simulation and experimental results are presented based on the analysis of the proposed control strategy.