基于Zeta电路的高电压传输比矩阵变换器研究

针对传统矩阵变换器电压传输比低这一问题,提出了一种高电压传输比Zeta交一直一交矩阵变换器的电路拓扑结构.介绍了该拓扑结构的基本构成和工作原理,分析推导了其电压传输比与占空比之间函数关系的解析表达式,阐述了双闭环控制策略的基本思想,最后通过仿真和样机试验证明了该电路的可行性和有效性.该电路的电压传输比可达1.0,甚至更高,这就突破了传统的矩阵变换器电压传输比最大为0.866的限制,且输出电压波形的失真度很小,因此具有很好的研究意义和应用价值.

Study of High Voltage Transfer Ratio Matrix Converter Based on Zeta Circuit

A high voltage transfer ratio Zeta AC-DC-AC matrix converter topology was proposed to resolve the problem of low voltage transfer ratio of conventional matrix converter.The basic configuration of the new topology and its fundamental principle were firstly introduced,the analytic expression on the function of voltage transfer ratio and duty cycle was analyzed,and the rationale of double-loop control strategy was clarified.Finally,the validity and feasibility of the new topologies were tested by digital simul...