基于超螺旋滑模观测器的永磁同步电机控制  

Permanent Magnet Synchronous Motor Control Based on Super-Twisting Sliding Mode Observer

作　　者：王海鑫 郭亮[1] WANG Haixin;GUO Liang(School of Information Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学信息科学与工程学院,浙江杭州310018

出　　处：《轻工机械》2024年第6期58-64,共7页Light Industry Machinery

基　　金：国家自然科学基金(52277068);浙江省科技厅重点研发计划(2023C01243);浙江省科技厅重点研发计划(2023C01159)。

摘　　要：针对传统滑模观测器观测精度低、振荡的问题,课题组采用超螺旋滑模观测器代替传统滑模观测器来实现永磁同步电机无位置传感器控制。将转速信息引入低通滤波器的截止频率中,并在转子位置和转速估计模块用锁相环模块替代反正切函数;为了确保改进后的控制系统能够稳定运行,采用了Lyapunov理论对系统的稳定性进行了深入的分析研究;最后,通过一系列的实验进行验证。结果表明:该策略在无位置传感器控制应用中具有有效性,可以有效减弱滑模观测器带来的抖振,改善了永磁同步电机无位置传感器系统观测精度低的问题。To address the issues of low observation accuracy and oscillations in traditional sliding mode observers,a super-twisting sliding mode observer was adopted by research group to replace the traditional sliding mode observer for sensorless control of permanent magnet synchronous motors.The speed information was integrated into the cutoff frequency of the low-pass filter,and a phase-locked loop module was used to replace the arctangent function in the rotor position and speed estimation module.To ensure the stable operation of the improved control system,Lyapunov theory was used to conduct in-depth analysis and research on stability of the system.Through a series of experiments,the effectiveness of this strategy in sensorless control applications has been verified,effectively reducing the chattering caused by sliding mode observer and improving the observation accuracy of sensorless system of permanent magnet synchronous motors.

关 键 词：永磁同步电机 超螺旋滑模观测器 无位置传感器控制 锁相环 LYAPUNOV理论 

分 类 号：TM351[电气工程—电机] TH122[机械工程—机械设计及理论]