基于HCCSMO的永磁同步直线电机无传感器控制  

Sensorless Control of Permanent Magnet Synchronous Linear Motor Based on HCCSMO

作　　者：原东昇 周扬[1] 尹忠刚[1] 白聪 YUAN Dong-sheng;ZHOU Yang;YIN Zhong-gang;BAI Cong(Xi'an University of Technology,Xi'an 710048,China)

机构地区：[1]西安理工大学,电气工程学院,陕西西安710048

出　　处：《电力电子技术》2024年第6期32-36,45,共6页Power Electronics

基　　金：国家自然科学基金(52207016,52177194)。

摘　　要：基于滑模观测器(SMO)的永磁同步直线电机(PMSLM)无传感器控制存在抖振和估计反电动势谐波,会造成速度和位置的估计误差。为解决上述问题,提出了一种谐波交叉消除滑模观测器(HCCSMO)。首先采用Sigmoid函数替代符号函数以削弱抖振,然后引入谐波交叉消除二阶广义积分器(SOGI)代替低通滤波器对估计反电动势进行处理,抑制由定位力产生的谐波分量,减小SMO的速度与位置估计误差。仿真与实验结果均表明所提出的方法能够有效抑制SMO的估计误差,提高速度和位置观测精度。The sensorless control of permanent magnet synchronous linear motor(PMSLM)based on sliding mode observer(SMO)suffers from chattering and estimation of back electromotive force harmonic which can cause estimation errors in speed and position.To address the aforementioned issues,the harmonic cross cancellation sliding mode observer(HCCSMO)is proposed.Firstly,the Sigmoid function is used instead of the sign function to weaken chatering.Then,a harmonic cross elimination second-order generalized integrator(SOGI)is introduced instead of a low-pass filter to process the estimated back electromotive force which suppresses the harmonic components generated by the positioning force and reduces the speed and position estimation errors of the sliding mode observer.Simulation and experimental results show that the proposed method can effectively suppress the estimation error of the sliding mode observer and improve the accuracy of speed and position observation.

关 键 词：电机 无传感器控制 谐波交叉消除滑模观测器 

分 类 号：TM3[电气工程—电机]