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Method and device for acquiring rotor position based on permanent magnet synchronous drive system

机译:基于永磁同步驱动系统的转子位置获取方法及装置

摘要

A method and device for acquiring a rotor position based on a permanent magnet synchronous drive system. The permanent magnet synchronous drive system includes an inverter and a permanent magnet synchronous motor, wherein the initial speed of the permanent magnet synchronous motor is not zero. The method includes: controlling a bridge arm switch of an inverter periodically; collecting a three-phase current of the permanent magnet synchronous motor at a fixed time within each control period; and after the three-phase current is reversed, sending same to a phase-locked loop system to conduct processing, so as to obtain a phase angle of an induction potential vector, and according to the phase angle of the induction potential vector, acquiring a rotor position angle of the permanent magnet synchronous motor.
机译:一种基于永磁同步驱动系统的转子位置获取方法和装置。永磁同步驱动系统包括逆变器和永磁同步电动机,其中永磁同步电动机的初始速度不为零。该方法包括:周期性地控制逆变器的桥臂开关;以及在每个控制周期内的固定时间收集永磁同步电动机的三相电流;三相电流反向后,送至锁相环系统进行处理,得到感应电势矢量的相角,并根据感应电势矢量的相角,获取永磁同步电动机的转子位置角。

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