永磁同步曳引电动机转子位置整定的新方法

A New Method on Detectincj Rotor Position of the PMSM

介绍了电梯用永磁同步电动机转子位置整定的一种新方法。该方法是基于定子铁芯饱和情况下的凸极效应．通过在永磁同步电动机定子线圈中注入高频电流的方法．推算出转子磁极的位置和方向。同时论述了用增量型编码器来记录转子的磁极位置的原理。由于不松开抱闸．也就不需要拆卸曳引钢丝绳或在轿厢中放置平衡载重．极大地提高了现场调试和维护的效率。通过仿真和试验．说明该方法是可行的。

This paper presents a new method of detecting initial rotor position for a permanent magnet synchronous traction machine. Considering the small saliency caused by the saturation of the stator iron, the proposed algorithm calculates the standstill rotor position and the direction of magnetization by injecting high frequency current to the stator of the machine. Meanwhile, recording the rotor position with an incremental encoder is discussed. Because there is no need to remove the traction ropes or put the balance weights in the car, this method improves the adjusting and/or maintaining efficiency at site. The simulations and experiments verify the feasibility of this method.