一种低成本高可靠性的SPMSM启动方法

Research on SPMSM Low Speed and Heavy Load Start Positionless Vector Control System

永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)是由永磁体励磁产生同步旋转磁场的同步电机,无转子绕组,具有效率高、体积小以及性能优异等特点,广泛应用于高控制精度和高可靠性场合。永磁同步电机可分为凸极永磁同步电机(IPMSM)和隐极永磁同步电机(SPMSM)。相比于IPMSM的MTPA弱磁控制方式,SPMSM更适合id=0的控制方式。从矢量控制方程推导位置状态观测器方程,并运用MATLAB/Simulink环境搭建SPMSM系统的无位置速度矢量状态观测器模型。仿真运行结果表明,采用id=0的矢量状态矩阵观测器控制方式,能有效解决SPMSM在低速启动下的重载启动问题,最低运行频率可以低至5 Hz。

Permanent Magnet Synchronous Motor is a synchronous motor that generates a synchronous rotating magnetic field by permanent magnet excitation.It has no rotor winding,high efficiency,small size,and excellent performance.It is widely used in high control accuracy and high reliability occasions.Permanent magnet synchronous motors can be divided into salient pole PermanentMagnet Synchronous Motors(IPMSM)and hidden pole Permanent Magnet Synchronous Motors(SPMSM).Compared with IPMSM's MTPA field weakening control method,SPMSM is more suitable for id=0 control method.The position state observer equation is derived from the vector control equation and the position-free velocity vector state observer model of the SPMSM system is built using the MATLAB/Simulink environment.The simulation results show that the control mode of the vector state matrix observer with id=0 can effectively solve the SPMSM’s heavy-duty startup problem under low-speed startup,and the minimum operating frequency can be as low as 5 Hz.