一种永磁同步电机转子位置检测及标定方法

摘要

针对永磁电力推进系统转子位置检测应用需求,采用旋转变压器和数字转换芯片AD2S1210作为位置检测的技术方案.对旋转变压器常规信号调理电路进行了改进,降低了信号失真,抑制了高频干扰,提高了检测精度.采用测量绕组电压过零点与旋转变压器检测信号过零点的相位差,实现转子位置初始角的标定.最后,实验验证了位置检测系统中调理电路的有效性和转子位置初始角标定的精确性.%According to the application requirement of rotor position detection in permanent magnet electric propulsion system,the resolver and digital converter AD2S1210 are used as the technical route.The conventional signal conditioning circuit of the resolver is improved,the signal distortion is decreased,the high frequency interference is suppressed,and the detection accuracy is improved.By measuring the phase difference between the zero crossing point of the winding voltage and the zero crossing point of the detection signal of the resolver,the initial angle of the rotor position is calibrated.Finally,the experimental results verify the effectiveness of the conditioning circuit and the accuracy of the initial angle calibration in the position detection system.