基于SESO的可控励磁直线同步电动机电流预测控制的研究  

Current predictive control of controlled excitation linear synchronous motor based on SESO

作　　者：李尚 蓝益鹏[1] LI Shang;LAN Yipeng(School of Electric Engineering,Shenyang University of Technology,Shenyang 110870,CHN)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《制造技术与机床》2023年第10期169-176,共8页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金资助项目(51575363)。

摘　　要：对可控励磁直线同步电动机(CELSM)提出基于切换型扩张状态观测器(SESO)的电流预测控制策略。根据可控励磁直线同步电动机工作原理建立数学模型,设计无差拍预测电流控制器(DPCC),并采用扩张状态观测器对总扰动进行观测和补偿。将线性扩张状态观测器(LESO)和非线性扩张状态观测器(NLESO)通过设计合适的切换规则结合为SESO,综合线性与非线性控制策略的优点,在保留LESO收敛速度同时提高观测精度和鲁棒性。最后,采用SIMULINK进行仿真研究,将SESO-DPCC与LESO-DPCC控制策略进行对比。研究结果表明,SESO-DPCC控制策略能使可控励磁直线同步电动机输出的电流和转矩更稳定并具有更好的参数鲁棒性。The current predictive control strategy based on switched extended state observer(SESO)is proposed for controllable excitation linear synchronous motor(CELSM).According to the working principle of the controllable excitation linear synchronous motor,the mathematical model is established,the deadbeat prediction current controller(DPCC)is designed.The extended state observer is used to observe and compensate the total disturbance.In this paper,the linear state extended observer(LESO)and the nonlinear state extended observer(NLESO)are designed,the advantages of the linear and nonlinear control strategies are combined with SESO by designing suitable switching rules.The observation accuracy and robustness are improved while the convergence rate of LESO is preserved.Finally,SIMULINK is used to simulate and compare the SESO-DPCC control strategy with LESO�DPCC control strategy.The results show that the SESO-DPCC control strategy can make the output current and torque of the controllable excitation linear synchronous motor more stable and have better parameter robustness.

关 键 词：无差拍预测电流控制 可控励磁直线同步电动机 ESO 扰动观测 扰动补偿 

分 类 号：TM341[电气工程—电机]