异步电机直接转矩控制的仿真研究

作者：周 伟，陈 浩，庄圣贤* 日期：2010-09-08/span> 浏览：2997 查看PDF文档

异步电机直接转矩控制的仿真研究
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周 伟，陈 浩，庄圣贤*

（西南交通大学 电气工程学院，四川 成都 610031） 

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。
关键词：异步电动机；直接转矩控制；Matlab/Simulink
中图分类号：TH13；TP273 文献标识码：A 文章编号：1001-4551(2010)07-0014-05

imulation research of asynchronous motor direct torque control
ZHOU Wei, CHEN Hao, ZHUANG Shengxian
(College of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China)
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Abstract: 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 electromagnetic torque controller was presented and the traditional stator voltage vector choice form was taken place by a new one. The main modules 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 indicate the correctness of the model and rapid dynamical response of the whole system.
Key words: asynchronous motor; direct torque control(DTC); Matlab/Simulink