电压空间矢量脉宽调制技术的原理与特征分析

Principle and Characteristic Analysis of Space Vector PWM

文章首先对电压空间矢量的概念进行了数学上的分析,然后在简述变频调速中常用的电压空间矢量脉宽调制技术的基础上,详细分析了该脉宽调制技术的几何特征,同时着重指出了两电平电压型逆变器电压空间矢量脉宽调制技术的特征与不同的调制区域。

Firstly this paper makes the mathematical analysis on the concept of space voltage vector. Then based on the explanation of space voltage pulse width modulation frequently used in the variable frequency drive, the geometric character istics of this modulation are elaborated. Finally it points out the characteristics of this technique used in the two-leved voltage source inverter and the different modulation region.