Γ-Z源双级矩阵变换器

Γ-Z-source Two-stage Matrix Converter

针对传统的双极性矩阵变换器(TSMC)电压传输比低的缺点,提出了一种基于Γ-Z源的TSMC拓扑及其调制策略。该拓扑可通过改变变压器的匝数比来调节输出电压范围,与已有的Z源TSMC相比具有电容电压应力更低、所需电容数量少的优点。此处还对Γ-Z源TSMC的电压传输比与r-z源网络参数设计进行了分析,并搭建了一台TMS320F28335和EPM570为控制器的Γ-Z源TSMC实验样机,仿真和实验验证了所提拓扑和控制策略的可行性和优越性。

To deal with the disadvantage of low voltage transfer ratio of traditional two-stage matrix converter（TSMC）, a TSMC topology with F-Z-source and its modulating strategy are presented.This topology can modulate the output voltage range by varying the turns ratio of the transformer, compared with Z-source TSMC ,this topology＇s capacitor voltage stress is lower and needs less capacitance.The voltage transfer ratio of Z-source TSMC and the design of F-Z- source＇s network parameters are analyzed and a F-Z-source experimental prototype with controllers TMS320F28335 and EPM570 is manufactured.The feasibility and advantages of this topology and its modulating strategy are proved by the simulations and experiments.