矩阵变换器两种四步换流策略的对比研究

矩阵变换器自诞生以来,其换流策略的研究很多,基于电流方向检测与电压方向检测的四步换流策略都得到广泛的研究和应用.一些研究人员对四步换流的具体过程以及输出波形进行了一定的分析,而很少对它们的难易程度、输出波形的可靠性和波形质量做进一步对比分析.在深入分析换流策略的基础上,结合双向开关对四步换流策略作详细的介绍,在保证换流的可靠性、改善波形质量的基础上,通过MATLAB仿真方法验证了结论的正确性和有效性,并分析比较了两种四步换流方式的优缺点.

Study on four step commutation strategy for matrix converters

Since the beginning of the matrix converter,the commutation strategy research on it is a lot.Based on the direction of current detection and voltage direction of four-step commutation strategy have been extensive research and application.Some researchers have analyzed the four steps in flow process and the output waveform,But few of them,to the difficulty 、the reliability of the output waveform and waveform quality for further analysis and comparison.Based on the deep analysis of the commutation strategy and combined two way switch,this paper presents a detailed introduction to the four step commutation strategy.On the basis of ensuring the reliability of the flow changing and improving the quality of waveform,the correctness and effectiveness of the conclusion are verified by the MATLAB simulation method,and the advantages and disadvantages of two types of four-step commutation modes are analyzed and compared.