基于模糊PI的直接转矩控制在开关磁阻电机中的研究与仿真  

Research and Simulation of Direct Torque Control Based on Fuzzy PI in Switched Reluctance Motor

作　　者：蔡健 康乔乔 Cai Jian;Kang Qiaoqiao

机构地区：[1]齐鲁工业大学电气工程与自动化学院

出　　处：《变频器世界》2019年第12期82-85,共4页The World of Inverters

摘　　要：开关磁阻电机(Switched Reluctance Motor,SRM)近年来发展迅速,并且应用范围广泛。但是作为一个非线性、强耦合系统,开关磁阻电机的转矩脉动成为其突出的缺点。转矩脉动同时带来的噪音和转速波动影响到电机的正常使用,为了抑制开关磁阻电机的转矩脉动,本文从直接转矩控制策略出发,提出了一种直接转矩控制(Direct Torque Control,DTC)和模糊PI控制相结合的方案,并进行仿真研究。仿真结果表明DTC方法能按预定的要求将转矩脉动范围控制在滞环限内,转矩波形明显优于电流斩波控制下的转矩波形,提升了电机的动态性能,加强了电机的稳定性和可控性。Switched Reluctance Motor(SRM) has developed rapidly in recent years and has a wide range of applications. However, as a nonlinear, strongly coupled system, the torque ripple of a switched reluctance motor becomes a prominent disadvantage. The noise and speed fluctuation caused by torque ripple affect the normal use of the motor. In order to suppress the torque ripple of the switched reluctance motor, this paper proposes a direct torque control(DTC) based on the direct torque control strategy, A scheme combining direct torque control and fuzzy PI control is proposed and simulated. The simulation results show that the DTC method can control the torque ripple range within the hysteresis limit according to the predetermined requirements, and the torque waveform is obviously better than the torque waveform under the current chopping control. The dynamic performance of the motor is improved, and the stability and controllability of the motor are enhanced.

关 键 词：直接转矩控制 开关磁阻电机 滞环控制器 转矩脉动抑制 

分 类 号：TM352[电气工程—电机]