基于模糊控制的异步电动机直接转矩控制系统研究  

Research on the direct torque control system of asynchronous motor based on fuzzy control

作　　者：周贤娟[1] 冯梅琳[1] 韩树人[1] 

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《江西理工大学学报》2014年第3期51-55,共5页Journal of Jiangxi University of Science and Technology

基　　金：江西省教育厅基金项目(GJJ10480);国家大学生创新创业训练计划项目(201210407027)

摘　　要：针对传统的异步电动机直接转矩控制中存在低速运行时电动机转矩脉动较大的问题,提出了一种基于模糊控制的直接转矩控制系统模型.该模型采用三输入单输出的结构,将磁链相位角、磁链幅值误差和转矩误差作为模糊变量,并对其进行模糊分级,以此达到优化空间电压矢量选择的目的.并在Matlab/simulink中进行仿真,结果表明该方法有效的减小了转矩脉动,同时有更好的速度响应.In the direct torque control of traditional asynchronous motor, there lies a big problem of its ripple when it is running at a low speed. Hence a model is put forward of direct torque control based on fuzzy control. The model adopts the structure of the three inputs and single output with the flux linkage phase angle and flux linkage amplitude error and the torque error as fuzzy variables. Fuzzy classification is also used for them to achieve the goal of optimization of space voltage vector selection. And Matlab/simulink is used in the simulation. The results show that this method effectively reduces the torque ripple, and at the same time a better speed in response can be achieved.

关 键 词：模糊控制 直接转矩控制 转矩脉动 异步电动机 

分 类 号：TP89[自动化与计算机技术—检测技术与自动化装置]