基于抗负载扰动的永磁同步电机双滑模控制

王  宁; 刘兴勇

doi:10.16411/j.cnki.issn1006-7736.2016.02.013

大连海事大学学报 >

2016 , Vol. 42 >Issue 2: 75 - 82

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.02.013

控制

基于抗负载扰动的永磁同步电机双滑模控制

王宁 ,
刘兴勇

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(1.大连海事大学轮机工程学院，辽宁大连 116026；2.国家电网辽宁省电力有限公司朝阳供电公司，辽宁朝阳 122000)

王宁（1983—），男，博士，副教授，博士生导师，E—mail：n.wang.dmu.cn@gmail.com.

收稿日期: 2015-06-23

修回日期: 2015-07-20

网络出版日期: 2015-08-21

基金资助

国家自然科学基金资助项目（51009017；51379002）；交通部应用基础研究基金资助项目（2012-329-255-060）；中国博士后科学基金资助项目（2012M520629）；辽宁省高等学校优秀人才支持计划（LJQ2013055）；中央高校基本科研业务费（2009QN025；2011JC002；3132013025）.

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Load disturbance rejection based dual sliding mode control of permanent magnet synchronous motors

WANG Ning ,
LIU Xing-yong

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(1.Marine Engineering College, Dalian Maritime University, Dalian 116026，China; 2.Chaoyang Power Supply Company, State Grid Liaoning Electric Power Supply Co.,ltd, Chaoyang 122000，China)

Received date: 2015-06-23

Revised date: 2015-07-20

Online published: 2015-08-21

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摘要

为提高永磁同步电机矢量控制系统的抗负载扰动能力，提出一种基于滑模转速控制器和滑模负载转矩观测器的永磁同步电机双滑模控制策略.该控制策略通过在滑模转速控制器的滑模面中加入转速误差的积分项，使系统的静态误差变小，并且通过设计一种改进的指数趋近律，使系统状态变量的收敛速度得以提高.以负载转矩和电机转速为观测对象设计滑模负载转矩观测器，将负载转矩观测值前馈补偿到滑模转速控制器中，使滑模转速控制器不连续项的最小幅值有效减小，从而有效抑制了滑模抖振现象，提高了控制系统的动态鲁棒性能和抗负载扰动能力.仿真结果验证了该控制策略的有效性和优越性.

关键词： 永磁同步电机; 双滑模控制; 抗负载扰动; 滑模观测器; 矢量控制

本文引用格式

王宁 , 刘兴勇 . 基于抗负载扰动的永磁同步电机双滑模控制[J]. 大连海事大学学报, 2016 , 42(2) : 75 -82 . DOI: 10.16411/j.cnki.issn1006-7736.2016.02.013

Abstract

In order to improve the load disturbance rejection of the vector control system of a permanent magnet synchronous motor (PMSM), a double sliding mode control (DSMC) scheme of PMSM was proposed by using incorporating sliding mode speed controller and sliding mode load torque observer. The DSMC scheme can effectively reduce the static error by adding integral term of speed error in sliding surface. Meanwhile, the convergence rate of system state variables can be improved by employing an exponential reaching law. Moreover, the sliding mode load torque observer was designed to estimate load torque and motor speed, which would be further fed forward to the sliding mode speed controller, and the amplitude of the discontinuous item was reduced. In this context, the chattering pertaining to the sliding mode speed controller can be suppressed, and thereby enhancing the dynamic and robust performance with remarkable ability of disturbance rejection. Simulation results demonstrate the effectiveness and superiority of the proposed control scheme.

Key words： permanent magnet synchronous motor (PMSM); dual sliding mode control (DSMC); load disturbance rejection; sliding mode observer; vector control

参考文献

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