摘要
针对以电压源逆变器(VSI)馈电的永磁同步电机(PMSM)驱动系统,提出一种基于超扭曲算法的直接转矩控制。该控制策略结合滑模控制、直接转矩控制和空间矢量调制的原理,克服了PI型控制的空间矢量调制-直接转矩控制(DTC-SVM)鲁棒性差与传统滑模控制的DTC-SVM存在抖振的缺点,从而获得良好的稳态与动态性能,同时保证逆变器开关频率近似恒定。实验结果表明,所提方法不仅可以有效减小磁链和转矩脉动,还对系统参数变化具有较强的鲁棒性能。
In this paper, a direct torque control using super twisting algorithm is proposed for voltage source inverter（ VSI）-permanent magnet synchronous motor（ PMSM） drive system. The principles of sliding mode control, direct torque control, and space vector modulation are combined to ensure high performance operation, both in the steady state and under transient conditions in this approach with approximately constant switching frequency. It solves the problems of poor robustness in direct torque control with space vector modulation （ DTC- SVM） controlled by proportional plus integral controller and chattering in DTC-SVM controlled by slide mode controller. The experiment verified that the proposed method could decrease flux and torque ripples and be robust to parameter variation.
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第15期89-99,共11页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目资助(51407127)
关键词
永磁同步电机
空间矢量调制
直接转矩控制
超扭曲算法
Permanent magnet synchronous motor, space vector modulation, direct torque control, super twisting algorithm
