具有参数自适应功能的永磁同步电机无位置传感器控制  

Sensor Less Control of Permanent Magnet Synchronous Motor with Online Parameter Adaptive Function

作　　者：秦铭珠 李玉玲[1] QIN Mingzhu;LI Yuling(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电工技术》2022年第15期67-70,共4页Electric Engineering

摘　　要：永磁同步电机运行过程中,电机参数在不同工况下会发生变化而影响转子位置的获取,从而影响电机控制系统的效率和性能,因此对电机参数的在线辨识非常必要。提出了基于递推最小二乘法的在线参数辨识无位置传感器控制方法,该方法对定子交轴电感进行在线辨识,并将结果反馈到滑模观测器,同时更新电流控制器参数,实现了电机控制的参数自适应功能。基于永磁同步电机系统的实验结果表明,该控制方法下系统有良好的稳定性和动态性能。During the operation of PMSM,the motor parameters will change under different working conditions and affect the rotor position acquisition,thus affecting the efficiency of the control system.Therefore,online identification of motor parameters is important.To solve this problem,an parameter identification based on recursive least square method combined with sensorless control system is proposed in this paper.This method identifies the quadrature-axis inductance of the stator online,and feeds the result back to the sliding mode observer and updates the current controller parameters,thus realizing the parameter self-adaptation function of the motor control.The experimental results based on the permanent magnet synchronous motor system show that the system has good stability and dynamic performance under this control method.

关 键 词：永磁同步电机 在线参数辨识 滑模观测器 递推最小二乘法 

分 类 号：TM341[电气工程—电机]