基于超螺旋算法的永磁同步电动机直接转矩自抗扰控制  

Active disturbance rejection controller of direct torque for permanent magnet synchronous motor based on super-twisting sliding mode

作　　者：杨明晖 李生权 李喆 冯波 李娟 YANG Minghui;LI Shengquan;LI Zhe;FENG Bo;LI Juan(College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China)

机构地区：[1]扬州大学电气与能源动力工程学院,江苏扬州225127

出　　处：《江苏大学学报（自然科学版）》2022年第6期680-684,696,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(61903322);新能源电力系统国家重点实验室开放基金资助项目(LAPS19003);江苏省“六大人才高峰”高层次人才选拔培养计划项目(KTHY2018038);扬州市优秀青年自然科学基金资助项目(YZ2017099)。

摘　　要：针对传统永磁同步电动机直接转矩控制存在较大的定子磁链、电磁转矩脉动以及电动机在低速运行段控制效果差等不足,提出了基于超螺旋滑模的自抗扰控制调速方法.首先将传统直接转矩控制系统中的磁链环和转矩环上的滞环控制器替换成超螺旋滑模控制器,以解决由滞环控制引起的定子磁链、电磁转矩脉动的问题;其次将控制系统中速度环采用的PI控制器替换成自抗扰控制器,以改善控制系统在低速运行段控制效果不佳以及转速超调的问题.给出了PMSM数学模型.完成了基于DTC的PMSM调速设计,包括基于STSM的转矩和磁链控制器设计和自抗扰速度控制器的设计.在Matlab/Simulink环境下进行了仿真试验.结果表明:在相同条件下所设计的调速系统没有超调量,相较于传统系统其快速性与抗干扰能力提升近70%,转矩脉动降低近0.8 N·m,定子磁链脉动也获得了有效抑制.To solve the problems of permanent magnet synchronous motor(PMSM) with big stator flux linkage and electromagnetic torque ripple and unsatisfying control performance in the traditional direct torque control(DTC) at low speed condition, a novel active disturbance rejection controller(ADRC) was proposed based on super-twisting sliding mode(STSM). The Bang-Bang control method of torque loop in the traditional DTC method was replaced by STSM control to reduce the problems of stator flux linkage and electromagnetic torque ripple caused by Bang-Bang control. ADRC was adopted to replace the PI controller for improving the effect of control system at low speed and solving the problem of speed overshoot, and the mathematical model of PMSM was provided. The designs of PMSM speed control based on DTC were completed with the design of torque and flux controller based on STSM and the design of active disturbance rejection speed controller. The effectiveness and the superiority of the proposed speed control method were verified by the simulation with Matlab/Simulink. The results show that under the same conditions, the proposed speed control system has no overshoot, and the rapidity and the anti-disturbance ability of the system are improved by nearly 70% in contrast to traditional system. The torque ripple is approximately reduced by 0.8 N·m, and the stator flux ripple can also be effectively suppressed.

关 键 词：永磁同步电动机 直接转矩控制 自抗扰控制 超螺旋滑模 调速控制 扩张状态观测器 干扰抑制 

分 类 号：TM341[电气工程—电机] TM301.2