SPMSM高频方波电压注入无传感器矢量控制仿真分析

Simulation Analysis of High Frequency Square Wave Voltage Injection Based Sensorless Vector Control over SPMSM

永磁同步电机(PMSM)具有高效率、高功率因数以及高功率密度等优点,在电力传动领域得到了广泛的应用。针对表贴式永磁同步电机(SPMSM)调速系统在零速和低速下,基于传统旋转高频电压注入和脉振高频电压注入的无传感器矢量控制技术存在转子位置估计精度较差的问题,在分析SPMSM饱和凸极性基础上,提出了基于高频方波注入的SPMSM无传感器矢量控制方法,仿真结果表明,该方法能够克服上述两种传统高频电压注入无传感器矢量控制方法的不足,具有转子位置估计精度较高以及调速动态性能较好的优点。

Permanent magnet synchronous motor(PMSM)has the advantmges of high efficiency,high power factor and high power density,which is widely used in the field of electrical drives.In terms of the problem of poor rotor position estimation accuracy in sensorless control technology for traditional rotating high frequency voltage injection method and pulsation high frequency voltage injection method in surface mounted permanent magnet synchronous motor(SPMSM)speed reg u I at i on system at zero speed and low speed,a sensorless control tech no logy of SPMSM based on high frequency square wave voltage injection method is proposed based on the analysis of rotor saliency of surface mounted permanent magnet synchronous motor.The simulation results show that the proposed method can overcome the shortcomings of the above two traditional sensorless control techniques,and has the advantmges of high accuracy of rotor position estimation and good dynamic performance of speed regulation.