一种改进的矩阵式变换器空间矢量调制策略  

An Improved Space Vector Modulation Method of Matrix Converter

作　　者：张磊[1] 孙进[1] 王佑民 

机构地区：[1]空军工程大学 [2]93502部队

出　　处：《微特电机》2013年第6期30-33,共4页Small & Special Electrical Machines

基　　金：陕西省自然科学基金项目(2012K10-20)

摘　　要：针对矩阵变换器调制策略电压传输比低的问题,在深入研究矩阵式变换器空间矢量调制策略的基础上,提出了一种通过改变电压调制系数提高电压传输比的空间矢量过调制策略。根据电压矢量轨迹与空间矢量六边形位置的关系,将电压空间矢量调制区域分为线性调制区和过调制区,通过改变电压调制系数,从而实现过调制。最后建立MATLAB/Simulink仿真,结果表明空间矢量过调制策略可以有效提高电压传输比到0.955。Basod on study of space vector modulation, a novel over-modulation method of matrix converter was pro- posed for the problem of low voltage transfer ratio of matrix converter. According to the relation of the voltage space vector trace and hexagon trace vector, the control level was divided into linear modulation level and over-modulation level. The o- ver modulation strategy was achieved by transforming the voltage modulation coefficient. The simulation results demonstrate that the vnltu~ transfer r^tln o^n I~ ra^eaA ,,n t~ fi O^g

关 键 词：矩阵变换器 空间矢量过调制 电压传输比 

分 类 号：TM921.2[电气工程—电力电子与电力传动]