doi:10.16186/j.cnki.1673-9787.2020120041

Received:2020/12/14

Revised:2021/05/12

Published:2022/07/15

Direct instantaneous torque control strategy at 9 regions for reducing torque ripple of switched reluctance motor

QU Ziyu, HUANG Chaozhi, CHEN Jun, LIU Xiping, LIU Wei

School of Electrical Engineering and Automation， Jiangxi University of Science and Technology， Ganzhou 341000，Jiangxi，China

Abstract: To solve the serious torque ripple of switched reluctance motor (SRM) at low speed,an improved method of nine regions direct instantaneous torque control ( DITC) was proposed. Based on the estimation of SRM instantaneous torque and the analysis of the three-level state of asymmetric drive circuit,the two-phase exchange region was divided into two parts,and the DITC of three-phase SRM was divided into nine regions from the original six regions. The different hysteresis control strategies were implemented to reduce the torque ripple during the operation of the motor according to the characteristics. In addition , in the speed loop,PI control and fuzzy PD control were combined to form a fuzzy PID controller,and the response time and overshoot of the system were improved. Finally,the simulation model of MATLAB/Simulink was established to prove the effectiveness of the proposed control method in this paper.

Key words:switched reluctance motor;direct instantaneous torque control;torque ripple reduction;nine regions hysteresis control

减小开关磁阻电机转矩脉动的九区间DITC控制策略_屈资喻.pdf