摘要
直接转矩控制(DTC)可以有效地抑制开关磁阻电动机的转矩脉动,但是当前三相开关磁阻电动机(SRM)的直接转矩控制方法并不适用于任意相的开关磁阻电动机。为实现四相8/6极开关磁阻电动机的直接转矩控制,在分析开关磁阻电动机数学模型的基础上,介绍了开关磁阻电动机直接转矩控制方法的基本原理,在Matlab/Simulink环境下利用基本模块建立了8/6极开关磁阻电动机的直接转矩控制仿真模型。基于功率变换电路的状态,给出了8/6极开关磁阻电动机电压矢量的选取规则,介绍了磁链矢量的计算方法以及扇区的判断方法,并利用Matlab/Simulink中的二维查表模块建立了开关表。最后,加入了速度PID控制器,并对该模型进行了仿真研究。研究结果表明,该控制方法是正确且有效的。
Direct torque control（DTC） can effectively reduce the torque ripple of switched reluctance motor（SRM）, but the current direct torque control method of three-phase switched reluctance motor can not be applied to arbitrary phase SRM. In order to realize the direct torque control of four-phase 8/6 SRM, based on the analysis of the mathematical model of SRM, the basic principle of DTC of SRM was introduced, and the simulation model of DTC of 8/6 SRM was built in Matlab/Simulink environment. On the basis of the states of the power conversion circuit, the selection rules of voltage vector were given, the calculation method of flux vector and the judgement method of flux sector were introduced, and the switch table was built through 2D lookup table in Matlab/Simulink. Finally, the model was simulated with speed PID control. The results indicate that the proposed method is correct and effective.
出处
《机电工程》
CAS
2013年第3期333-338,342,共7页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(61273086)
浙江省自然科学基金资助项目(LY12E07001)
关键词
四相8
6极开关磁阻电动机
直接转矩控制
电压矢量
扇区判断
four-phase 8/6 switched reluctance motor（SRM）
direct torque control（DTC）
voltage vector
sector judgment
