基于空间矢量调制的异步电机直接转矩控制  

Direct Torque Control of Induction Motors Based on Space Vector Modulation

作　　者：魏欣[1] 陈大跃[1] 赵春宇[1] 

机构地区：[1]上海交通大学仪器系,上海200030

出　　处：《系统仿真学报》2006年第2期405-408,415,共5页Journal of System Simulation

基　　金：教育部重点科技项目(02097)

摘　　要：对一种基于空间矢量调制(SVM)技术的异步电机直接转矩控制(DTC)系统进行了建模与仿真研究。基于SVM的DTC方案可以有效地减小转矩波动。在SVM-DTC中使用了两个PI控制器,可以得到能够准确补偿当前定子磁链与转矩误差的参考电压矢量。然后,利用SVM技术将参考电压矢量转换为相应的PWM开关信号。给出在MATLAB/Simulink下对这种SVM-DTC系统的仿真结果,说明了模型的有效性。A model of direct torque control （DTC） of induction motor drives based on space vector modulation （SVM） was established, and its simulation research was performed. The torque ripple could be significantly reduced by SVM-based DTC scheme. The synthesized reference voltage vector that could exactly compensate current flux and torque errors was generated by using two PI controllers. Aiterwards, the reference voltage vector could be converted into corresponding PWM signals by using SVM technique. The SVM-DTC was simulated in MATLAB/Simulink. Simulation results show the validity of the model.

关 键 词：直接转矩控制 空间矢量调制 异步电机 仿真 MATLAB 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]