提高矩阵变换器电压传输比的方法研究

A Study of the Method of Increasing Matrix Converter Voltage Transfer Ratio

矩阵变换器的电压传输比不大于0.866,一直是制约其工程应用的最重要原因之一,因此提高电压传输比的方法研究具有重要的现实意义。两种提高矩阵变换器电压传输比的有效方法是:谐波注入法和一种新型的拓扑结构。这两种方法的可行性和有效性是通过阐述它们的基本原理,对比分析它们的特点并通过仿真研究验证的。仿真结果表明:第一种方法能使电压传输比提高到1.0左右,但其输出电压中的谐波含量都相应增大;第二种方法的电压传输比可以达到甚至超过1.0,并且其输出电压中的谐波含量很小。两种方法所产生谐波的特点及其抑制对策和适用范围的比较研究能为工程应用提供一定的参考作用。

One of the most important reason which restricting engineering application is that matrix converter voltage transfer ratio can not be greater than 0. 866. Therefore, to improve the voltage transfer ratio method has important practical significance. There are three effective methods to improve the matrix converter voltage transfer ratio. They are harmonic in- jection method and a new topology. The feasibility and effectiveness of two methods are proving from analyzing their basic principles, comparing their characteristics and Simulation study. The simulation results show that the first method can in- crease the voltage transfer ratio to 1.0 or so, but the output voltage of the harmonic content is increased accordingly; the second method of the voltage transfer ratio can reach or exceed 1.0, and the output voltage of the harmonic content is small, The comparative research of the two methods can provide some reference for project application.