基于定子参考电压矢量预测的SVPWM直接转矩控制研究  

Research of Direct Torque Control Based on Forecast of Stator Reference Voltage Vector and Space Vector Pulse Width Modulation

作　　者：王磊[1] 王京[1] 张勇军[1] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083

出　　处：《电气传动》2010年第3期36-39,共4页Electric Drive

基　　金：国家"211工程"资助项目(010301)

摘　　要：针对感应异步电动机直接转矩控制(direct torque control,DTC)系统存在转矩和磁链脉动的缺点,推导出一种新的减小脉动的控制策略。通过对定子磁链的估算,获得下一周期的定子参考电压矢量,利用空间电压矢量脉宽调制(SVPWM)技术得到逆变器的开关控制信号。通过Matlab/Simulink仿真研究,验证了此算法的有效性。Considering the disadvantages in flux and torque ripple of direct torque control for asynchronous motor, a new control strategy to reduce the pulse was proposed. With estimating the stator flux, the stator reference voltage vector of next sample period was calculated. The switching control signals of the inverter are generated by space vector pulse-width modulation （SVPWM） technology. Through the simulation research, the effectiveness of this control strategy is proved.

关 键 词：直接转矩控制 空间电压矢量脉宽调制 参考电压矢量 异步电机 

分 类 号：TM343[电气工程—电机]