异步电机直接转矩控制的仿真研究  

Simulation research of asynchronous motor direct torque control

作　　者：周伟[1] 陈浩 庄圣贤[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《机电工程》2010年第7期14-17,52,共5页Journal of Mechanical & Electrical Engineering

摘　　要：在异步电动机α-β坐标系下介绍了异步电动机的数学模型、直接转矩控制(DTC)系统的工作原理和基本组成。针对直接转矩控制系统存在的转矩脉动问题,给出了一种新型的定子磁链控制器和转矩控制器,采用新型的电压矢量选择表代替传统的电压矢量选择表。并在Matlab/Simulink平台上搭建了异步电动机直接转矩控制调速系统的仿真模型,并对仿真模型中的主要模块进行了描述,简要说明了空间电压矢量的选择对转矩和磁链的作用和影响。仿真结果验证了该模型的正确性和整个系统的快速动态响应特性。The mathematics model of asynchronous motor,the basic components and principle of direct torque control（DTC） were introduced based on asynchronous motor α-β coordinate system.Aiming at the electromagnetic torque ripple of DTC,a novel stator flux and electro-magnetic torque controller was presented and the traditional stator voltage vector choice form was taken place by a new one.The main mod-ules of the simulation system were described and how the choice of space voltage vector affects the motor＇s flux and electromagnetic torque was illustrated.The simulation model of asynchronous motor DTC speed regulation system was established on Matlab/Simulink.The results indi-cate the correctness of the model and rapid dynamical response of the whole system.

关 键 词：异步电动机 直接转矩控制 MATLAB/SIMULINK 

分 类 号：TH13[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]