PMSM转子初始位置分相注入检测法

Individual Phase Injection Detection Method of PMSM Rotor Initial Position

研究适用于永磁同步电动机变频控制器的转子初始位置检测技术,针对基于电机凸极效应及铁心磁饱和特性的矢量注入检测方法在实际应用中面临的问题,提出了分相注入检测法。通过依次向各相定子绕组施加相同的电压,根据响应电流的大小判定转子磁极轴向位置,简化检测过程,消除误差影响,提高检测精度,实验结果验证了本方案的有效性和可行性。

The PMSM rotor initial position detection technology applicable to variable-speed controllers was studied.An individual phase injection detection method was proposed pertinent to the problems in the practical applications by using the vector injection detection method based on the motor salient pole effect and the core magnetic saturation characteristic.By sequentially applying identical voltage to the different phase windings,the axial position of the rotor magnetic pole was determined according to the magnitude of the response currents.The proposed scheme can simplify detection process,eliminate the influence of control error and improve detection accuracy.The experimental results demonstrate the effectiveness and feasibility of the proposed method.