高频脉振注入在永磁同步电机无感控制中的应用  

Sensorless Control of Permanent Magnet Synchronous Motor based on High-frequency Pulse Vibration Injection

作　　者：乐江源[1] 谢潇非 LE Jiangyuan;XIE Xiaofei(School of Physics and Electronic Information,Gannan Normal University,Ganzhou 341000,China)

机构地区：[1]赣南师范大学物理与电子信息学院,江西赣州341000

出　　处：《赣南师范大学学报》2024年第6期75-78,共4页Journal of Gannan Normal University

基　　金：江西省教育厅科技项目(460939)。

摘　　要：随着电机转速增加,反电动势也随之增大.在低速运行阶段,传统的无位置传感器控制技术在永磁同步电机(PMSM)中,由于信噪比较低,会导致对电机转子位置和速度的检测精度下降.为了不依赖位置传感器获取转子位置信息,永磁同步电机采用了基于高频脉冲电压注入的方法.通过注入高频电压至q轴,捕获转子误差信息.利用q轴高频电流响应实时追踪转子位置,理论、仿真与实验结果验证,该策略能提升低速下的转子位置估算精度,表现优异的鲁棒性.As the motor speed increases,the back EMF also increases.In the low-speed operation stage,the traditional sensorless control technology in the permanent magnet synchronous motor(PMSM)will lead to the reduction of the detection accuracy of the motor rotor position and speed due to the low signal-to-noise ratio.In order to obtain rotor position information without relying on position sensors,permanent magnet synchronous motors use a method based on high-frequency pulse voltage injection.By injecting a high-frequency voltage into the Q-axis,rotor error information is captured.The Q-axis high-frequency current response is used to track the rotor position in real time,and the theoretical,simulation and experimental results verify that the strategy can enhance the accuracy of rotor position estimation at low speed and has excellent robustness.

关 键 词：反电动势 高频脉振注入 无位置传感器 

分 类 号：TM28[一般工业技术—材料科学与工程]