贴面式永磁同步电机无传感器控制系统研究

针对贴面式永磁同步电机提出了一种无传感器控制策略．根据定子铁心的非线性磁化特性，检测转子初始位置，这种方法不需要电机参数和额外的硬件设施．系统运行时，由闭环磁通观测器估算转子位置、速度．仿真结果表明，系统具有良好的暂态、稳态性能．

Sensorless control for surface permanent magnet synchronous motor

In this paper,a new approach to a sensorless speed control and an initial rotor position estimation for a surface permanent magnet synchronous motor (SPMSM) drive is presented.At a rotating condition,speed and rotor position estimation of SPMSM drive are obtained through an observer with compensation by only measuring the phase voltages and currents.The initial rotor position is performed by using the nonlinear magnetization characteristics of the stator core caused by the magnet of the rotor.Experimental results of simulation show that whether steady state or transient state,the can always beachieved in the system expected results.