基于模糊PI控制器SRM的DITC系统研究

Fuzzy PI Controller for Direct Instantaneous Torque Control System of SRM

开关磁阻电机(SRM)的转矩脉动是其主要的缺点。采用了直接瞬时转矩控制(DITC)的方法来抑制开关磁阻电动机的转矩脉动。但开关磁阻电动机的非线性难以构成高性能的调速系统,因此又提出了模糊控制理论与常规PI调节器相结合而构建的模糊PI复合控制方法,并将该控制器应用于DITC系统进行了仿真研究。仿真实验结果表明,DITC方法能够有效减小SRM的转矩脉动,而且模糊PI控制器能够使系统动态响应快、超调小、动静态性能优越、鲁棒性强。

The serious defect of switched reluctance motor （SRM） is torque tipple. Direct instantaneous torque control （DITC） method was adopted to reduce the torque tipple of SRM. Aiming at SRM with non-linear control system speed controller system, a fuzzy-PI control method composed of fuzzy control theory and conventional PI controller was introduced. Simulation result shows that this method of DITC can effectively ,＇educe the torque tipple of SRM and fuzzy-PI controller greatly raise response speed, small overshoot, dynamic and static performance and strong robustness.