基于矩阵变换器的异步电机直接转矩预测控制  

Predictive Direct Torque Control of Induction Motor Fed by Matrix Converter

作　　者：冯波[1] 林桦[1] 邓建[1] 王兴伟[1] 

机构地区：[1]华中科技大学,湖北武汉430074

出　　处：《电力电子技术》2010年第7期35-37,共3页Power Electronics

基　　金：湖北省自然科学基金项目(2009CDB413)~~

摘　　要：针对传统矩阵变换器(Matrix Converter,简称MC)中异步电机直接转矩控制(Direct Torque Control,简称DTC)系统的矢量开关表设计复杂,开关频率不固定的缺点,引入预测DTC策略。通过定子磁链误差和转矩误差计算出定子电压矢量控制指令,使该误差在下一周期趋于零,然后利用MC空间矢量调制技术合成该矢量,以实现对MC的控制。建立了基于预测控制的实验系统,并与矢量控制进行了比较实验,结果表明将预测DTC应用到MC供电的调速系统中是可行的,既保持了DTC控制的快速响应特性,又有与矢量控制相同甚至更优的低频稳态运行性能。For the complexity of switch table and uncertainty of switching frequency in direct torque control（DTC）of in-duction motor fed by matrix converter（MC）a,predictive control strategy is proposed,using torque and flux errors to calcu-late the reference voltage vector instruction that can compensate the errors in next periodt,hen the vector is synthesized by space vector PWM in MC.The experimental system is developed and the experiments which compared with vector control are carried out.The results show its feasible to apply predictive method in system fed by MC,with fast response as DTC and the same or even better performance than vector control at low frequency.

关 键 词：矩阵变换器 直接转矩控制 预测控制 空间矢量调制 

分 类 号：TM46[电气工程—电器]