Motor parameter identification method based on high-frequency voltage injection method considering phase resistance

The invention discloses a motor parameter identification method based on a high-frequency voltage injection method considering phase resistance, and relates to the field of permanent magnet synchronous motor control. According to the method, a current signal for identification is obtained by filtering high-frequency components in a signal through coordinate transformation, mathematical calculation and first-order low-pass filtering, and then the initial position of a magnetic pole, stator phase resistance, direct-axis inductance and quadrature-axis inductance can be accurately identified finally in a closed-loop tracking mode. 本发明公开了一种基于考虑相电阻的高频电压注入法的电机参数辨识方法，涉及永磁同步电机控制领域，该方法通过向永磁同步电机中注入高频正弦电压，然后采集电机实时相电流，经过坐标变换、数学计算以及一阶低通滤波滤除信号中的高频成分得到用于辨识的电流信号、和，然后利用闭环跟踪的方式，最终可以准确辨识出磁极初始位置、定子相电阻、直轴电感和交轴电感。