基于脉振高频注入的永磁同步压缩机无位置传感器控制

Position sensorless control strategy of PMSM compressor based on pulsating high frequency signal injection

为了提高永磁同步压缩机无位置传感器控制的低速性能,提出采用脉振高频注入法估算低速下的转速与位置,论文讨论了实现脉振高频注入法的关键技术,并在单转子压缩机上进行了实验,结果表明,脉振高频注入法能应用在变频空调低速场合,对不同参数的电机适应性好。

To improve the performance of position observer of sensorless PMSM compressor in low speed operation, pulsating high frequency signal injection was adopted. This paper discusses how to realize the pulsating high frequency signal injection based on PMSM compressor. The effectiveness of the proposed method has been verified by experimental results.