作　　者： ; ; ;

机构地区： 华南理工大学

出　　处： 《微特电机》 2008年第5期49-51,共3页

摘　　要： 为了减小传统直接转矩控制的磁链和转矩脉动,采用参考电压矢量计算模块和空间电压矢量调制(SVM)模块取代滞环比较器和开关矢量表,并利用Matlab/Simulink仿真软件建立矢量调制的异步电动机直接转矩控制系统模型。磁链环节电压矢量经过简单计算得出,转矩环节电压矢量被有效的分解后由转矩PI控制器和转子转速与定子磁链乘积给出。仿真结果表明,该直接转矩控制系统设计正确,达到了良好的控制效果。 An improved direct torque control system was proposed and modeled in the Matlab/Simulink for decreasing the flux and torque ripple. It was based on the strategy of reference voltage vector computation and space vector modulation substituting for basic hysteresis controller and switching table. Voltage vector for torque was decomposed reasonably, while one for flux was implemented simply. Two parts of it were implemented by PI controller and product of rotor speed and stator flux respectively. The validity and performance were proved well by simulation.

关 键 词： 直接转矩控制 参考电压矢量 矢量调制 仿真

领　　域： [电气工程]