改进型永磁同步电机初始位置辨识方法  

Improved initial position identification method for permanent magnet synchronous motor

作　　者：蒯松岩[1] 朱启铭 王玺凯 谭国俊[1] KUAI Songyan;ZHU Qiming;WANG Xikai;TAN Guojun(School of Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学电气工程学院,江苏徐州221116

出　　处：《实验技术与管理》2023年第12期92-98,136,共8页Experimental Technology and Management

基　　金：教育部产学研合作协同育人项目(202102449040);煤炭行业高等教育研究课题(2021MXJG032);江苏省产教融合型一流课程建设项目(2022-70)。

摘　　要：针对传统脉振高频电压注入法辨识表贴式永磁同步电机转子初始位置时,因电机凸极性小、采样电路存在误差而产生无法判别实际转子位置的盲区问题,提出一种改进型脉振高频电压注入方法。将估算d轴定向到三个位置角为0、2π/3、–2π/3 rad的位置上注入高频正弦电压信号,比较三次注入高频电压信号后,估算q轴上的高频响应电流大小,以此来确定转子所在区域对应的初次位置角。再将估算d轴定向到初次位置角上继续注入脉振高频电压,进行闭环控制,利用PI调节器使估算q轴的高频响应电流收敛于零,最后通过极性判断得到转子初始位置。还运用以DSP 28379D为控制核心的实验平台进行了验证实验,实验结果表明,该方法位置辨识精度高,能有效识别转子位置。Aiming at the problem that the traditional pulse vibration high-frequency voltage injection method is unable to identify the rotor initial position of the surface-mounted permanent magnet synchronous motor due to the small convex polarity of the motor and the error in the sampling circuit,an improved pulse vibration high-frequency voltage injection method is proposed.The estimated D-axis is oriented to inject high-frequency sinusoidal voltage signals at three position angles of 0,2π/3,and–2π/3 rad,and the magnitude of the high-frequency response current on the Q-axis is estimated by comparing the three times of the injected high-frequency voltage signals,which is then used to determine the initial position angle corresponding to the rotor location area.Then the estimated D-axis is directed to the initial position angle to continue to inject pulsating high-frequency voltage,closed-loop control,using the PI regulator to make the estimated Q-axis high-frequency response current convergence to zero,and finally through the polarity of the initial position of the rotor.Verification experiments are also carried out using the experimental platform with DSP 28379D as the control core,and the experimental results show that the method has a high position recognition accuracy and can effectively recognize the rotor position.

关 键 词：永磁同步电机 脉振高频电压注入 无位置传感器控制 初始位置检测 

分 类 号：TM301.2[电气工程—电机]