摘要
本文提出了一种基于双向Z源双输出双级矩阵变换器的全新拓扑结构,该拓扑结构是由双向Z源网络与五桥臂双输出双级矩阵变换器拓扑相结合而形成,并提出了一种适用于该拓扑结构的调制策略.加入双向Z源网络结构能够以单级变换实现升降压控制,提高了系统效率,该网络结构与常规Z源网络结构比较,在增加一个开关器件反向并联在整流级就可以有效抑制不正常的工作状态,并允许能量的双向流动,提高电压传输比.双向Z源网络相对于其他Z源网络能够工作在负载大范围变动的场合,网络电感可以设计的很小,可以有效地减少了系统的体积和质量.本文搭建了双向Z源双输出双级矩阵变换器的仿真模型,通过仿真实验验证该拓扑结构的正确性,并通过仿真结果验证了该调制策略的可行性.
This paper presents a novel topology of bi-directional Z-source bi-output bi-stage matrix converter,which is formed by the combination of bi-directional Z-source network and five-leg bi-output bi-stage matrix converter.The bi-directional Z-source network structure can realize the step-up and step-down control by single-stage transformation and improve the system efficiency.Compared with the conventional Z-source network structure,adding a switch device in reverse parallel at the rectifier stage can effectively suppress the abnormal working state,permit the bi-directional flow of energy and improve the voltage transmission ratio.Compared with other Z-source networks,bi-directional Z-source networks can work in situations where the load varies widely.The network inductance can be designed very small,which can effectively reduce the volume and quality of the system.The simulation model of bi-directional Z-source dualoutput dual-stage matrix converter is built.The correctness of the topology is verified by simulation experiments,and the feasibility of the modulation strategy is verified by simulation results.
出处
《电力系统装备》
2019年第16期14-16,共3页
Electric Power System Equipment
关键词
双输出双级矩阵变换器
双向Z源网路
dual-output two-stage matrix converter
bidirectional Z-source network
