永磁电机转子位置推定电压和时间自学习方法

A Self-learning Method for Detection Voltage and Detection Time of the Initial Position of Permanent Magnet Synchronous Motor Rotor

永磁同步电机转子初始位置对于系统控制来说,影响到了控制精度和控制效率。永磁同步电机转子初始位置的学习,本质上利用电机饱和特性,实现的技术大多是等幅脉宽的高频信号注入。本文所要解决的技术问题在于根据永磁同步电机的物理特性,提供一种永磁同步电机转子初始位置推定电压和推定时间自学习方法,所述方法可以快速、有效的针对不同类型永磁同步电机自适应出一个合理的注入信号方式,避免因磁通不饱和导致初始位置推定偏差过大,或者因推定电压过大而导致过流的现象出现。

The initial position of the rotor of permanent magnet synchronous motor affects the control accuracy and efficiency of the system control.The self-learning of the initial position of the rotor of permanent magnet synchronous motor essentially uses the saturation characteristics of the motor,and the technology frequently used is high frequency signal injection with constant pulse width.The technical problem to be solved in this paper is to provide a self-learning method for detection voltage and detection time of the initial position of the permanent magnet synchronous motor according to its physical characteristics.The method can quickly and effectively adapt a reasonable injection signal for different types of permanent magnet synchronous motor to avoid excessive initial position detection deviation due to unsaturation of the motor,or excessive detection voltage resulting in over-current fault.