基于分类算法的空间电压矢量PWM过调制策略研究  

The Research of Over-modulation Strategies for SVPWM Based on Classification Algorithm

作　　者：曹兴[1] 朱荣伍[1] 

机构地区：[1]中国矿业大学信息与电气学院

出　　处：《变频器世界》2011年第3期54-58,共5页The World of Inverters

摘　　要：在电压源型PWM逆变器中使用过调制技术可以提高电压利用率。本文采用了一种基于分类算法的SVPWM过调制技术。该方法仅需要简单的线性计算,就可实现线性SVPWM和六阶梯波之间的线性平滑过渡,并且可有效补偿六边形外电压矢量损失,避免了传统SVPWM算法中大量的三角函数运算和求根运算,节省处理器运算时间。MATLAB仿真结果验证了该算法的有效性和正确性。Operating voltage-source pulse width-modulated （PWM） inverters in the overmodulation region extends their voltage ranges. An over-modulation Strategy for Space Voltage Vector PWM based on classification algorithm is applied. The technique only requires simple linear computation for the smooth transitions through the entire operat- ing range up to square wave operation, and the voltage vector loss outside the hexagon is compensated. A large number of rooting and trigonometric function computations in the conventional SVPWM methods are avoided and it requires less computational time. The correctness and effectiveness of this method is verified by the result of MATLAB emulation.

关 键 词：电压源型逆变器 分类算法 空间矢量脉宽调制 过调制 

分 类 号：TM46[电气工程—电器]