基于定子磁链角度计算的PMLSM直接推力控制  

Direct thrust force control of PMLSM based on stator fluxlinkage angle control

作　　者：蒋頔 张宏伟[1] 崔磊磊 JIANG Di;ZHANG Hongwei;CUI Leilei(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《传感器与微系统》2022年第3期94-97,共4页Transducer and Microsystem Technologies

基　　金：河南省自然科学基金资助项目(162300410349);河南省高等学校青年骨干教师培养计划项目(2019GGJS062)。

摘　　要：针对传统永磁直线同步电机(PMLSM)直接推力控制(DTFC)存在磁链和推力波动大,鲁棒性低等问题,对传统直接推力控制进行了改进。通过分析定子磁链矢量角度的变化与电机磁链和推力的作用,用比例积分(PI)推力控制器替代了两个传统滞环控制器,改善了磁链和推力波动大的缺点。在此基础上,将PI速度控制器用基于Sigmoid函数的积分滑模控制器来替代,以解决传统PI速度控制器鲁棒性低等问题。仿真实验结果表明:改进后的直接推力控制有磁链和推力波动小、抗负载扰动性更强、鲁棒性强等优点。In order to solve the problems of flux linkage,thrust fluctuation and low robustness in traditional direct thrust force control(DTFC)of permanent magnet linear synchronous motor(PMLSM),an improvement is made.By analyzing the change of stator flux vector angle and the effect of motor flux linkage and thrust,proportional integral(PI)thrust controller is used to replace two conventional hysteresis loop controllers,and the shortcoming of large flux linkage and thrust fluctuation is improved.On this basis,PI speed controller is replaced by integral sliding mode controller based on Sigmoid function to solve the low robustness problem of traditional PI speed controller.The simulation results show that the improved direct thrust force control has the advantages of small flux linkage and thrust fluctuation,strong resistance to load disturbance and strong robustness.

关 键 词：永磁直线同步电机 直接推力控制 定子磁链矢量角度 SIGMOID函数 

分 类 号：TM351[电气工程—电机]