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,从而实现过调制策略。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。
Based on study of space vector modulation, a novel over-modulation method of matrix converter is proposed 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 is divided into linear modulation level and over-modulation level. The over modulation strategy is achieved by transforming the voltage modulation coefficient. The simulation results demonstrate that the voltage transfer ratio can be up to 0 . 955 .
出处
《电子器件》
CAS
北大核心
2014年第4期791-794,共4页
Chinese Journal of Electron Devices
基金
四川省应用基础研究项目(2011JY0118)
关键词
空间矢量
过调制
电压传输比
矩阵变换器
space vector
over modulation
voltage transfer ratio
space vector