基于转矩角简化的异步电动机SVM-DTC研究  

Research on Induction Motor SVM-DTC based on Torque Angle Simplification

作　　者：郑慧丽[1,2] 张兰红[2] 

机构地区：[1]江苏大学,镇江212013 [2]盐城工学院,盐城224051

出　　处：《微特电机》2014年第11期58-62,66,共6页Small & Special Electrical Machines

摘　　要：为了减小基本直接转矩控制(DTC)的磁链和转矩脉动,采用空间矢量调制(SVM)与直接转矩控制相结合(SVM-DTC)的方法。从直接转矩控制的基本原理出发,分析了SVM-DTC中目标电压矢量求取的关键点,提出了基于转矩角简化的目标电压矢量的求取方法,分析了SVM-DTC实现要解决的关键问题并给出了解决方法。仿真与实验结果表明,与基本DTC相比,采用基于转矩角简化的SVM-DTC可以大大减小电机磁链和转矩脉动,有效提高异步电动机系统的动、静态性能。A method was used to decrease the flux and torque ripple in basic direct torque control（Basic-DTC） bycombining the space vector modulation（SVM） with direct torque control strategy. The key point to obtain objective voltagevector in SVM-DTC was analyzed from the fundamental principle of DTC. The method to obtain the objective voltage vectorbased on torque angle simplification was proposed. Key problems of SVM-DTC realization were analyzed and the solutionswere presented. Simulation and experimental results indicate that flux and torque ripple decrease greatly in SVM-DTCbased on torque angle simplification compared with Basic-DTC. The static and dynamic performance of induction motor sys-tem is improved effectively by using SVM-DTC based on torque angle simplification.

关 键 词：异步电动机 直接转矩控制 空间矢量调制 转矩角 

分 类 号：TM343[电气工程—电机]