Secondly,based on the mathematical model of high frequency injection for salient pole PMSM, A high frequency signal injection method is used to estimate the rotor position of PMSM.

• 其次,在分析凸极永磁同步电动机数学模型的基础上,阐述了采用高频电压信号注入法进行转子磁极位置估计的原理。