摘要
空间矢量脉冲宽度(SVPWM)调制算法将逆变器和电动机视为一个整体,着眼于使电动机获得幅值恒定的旋转磁场。与正弦脉冲宽度(SPWM)算法相比,SVPWM可使功率开关器件的开关次数减少1/3,直流电压利用率提高15%,能获得较好的谐波抑制效果。本文分析了双三相感应电机常用的SVPWM调制算法,讨论了它们各自的优缺点,并给出了仿真和实验验证。
The algorithm of space vector pulse width modulation （SVPWM） regards the inverter and motor as a whole model to make the motor acquire a rotating magnetic field with constant amplitude. Comparing with the algorithm of sine pulse width modulation （SPWM）, SVPWM can achieve a good harmonic control effect with less than 30 percent action times of the power switching devices and more than 15 percent DC voltage utilization. This paper analyzes the SVPWM＇s common modulation algorithm of the three-phase motor and discusses their advantages and disadvantages. Simulation and experimental verification are given in the last.
出处
《大电机技术》
北大核心
2013年第3期16-18,23,共4页
Large Electric Machine and Hydraulic Turbine
关键词
双三相
脉宽调制
空间解耦
矢量分类
dual three-phase
SVPWM
space decoupling
vector classification
