直接转矩控制中SVPWM方法的仿真  

Simulation Research on SVPWM Method in Direct Torque Control

作　　者：袁琼珍 高赟[1] 

机构地区：[1]西安科技大学电气与控制工程学院,陕西西安710054

出　　处：《防爆电机》2014年第5期17-20,共4页Explosion-proof Electric Machine

基　　金：陕西省教育厅专项科研项目(2013JK1002)

摘　　要：传统的直接转矩控制具有转矩脉动大、电流畸变严重和开关频率不固定等问题,针对这些问题研究基于空间矢量脉宽调制(SVPWM)的直接转矩控制。在Matlab7.0/Simulink的环境下,建立了基于SVPWM直接转矩控制系统的仿真控制模型,通过与传统直接转矩控制控制系统相比,仿真结果表明采用SVPWM的直接转矩控制系统电机的转矩脉动减小、开关频率恒定及电流畸变小。Traditional direct torque control has the problems of large torque impulse,serious current distortion and unfixed switching frequency. In order to solve these problems,direct torque control based on space vector pulse width modulation（ SVPWM） is researched in this paper. The simulation control model of direct torque control system based on SVPWM is established under Matlab7. 0 /Simulink circumstance. Compared with traditional direct torque control system,the simulation result shows that direct torque control system based on SVPWM has the advantages of small torque impulse of the motor,constant switching frequency,and small current distortion.

关 键 词：异步电机 空间矢量脉宽调制 直接转矩控制 圆形磁链 转矩脉动 

分 类 号：TM301.2[电气工程—电机]