中压多端口电力电子变压器技术研究

Analysis of Medium Voltage Multi-port Power Electronic Transformer Technology

随着智能电网、能源互联网等电网技术的快速发展,多端口电力电子变压器成为交直流混合微电网的核心设备。相关理论和技术的研究得到了越来越广泛的关注。但是,从总体而言,多端口电力电子变压器的技术并不成熟,还有很多需要深入研究的地方。文中主要总结了电力电子变压器不同的拓扑和控制算法,提出在不同的应用场合下如何选取合适的拓扑和控制算法。通过分析多端口电力电子变压器发展历史,对多端口电力电子变压器的电路拓扑、成本、效率、可用率以及控制算法等进行了分析和对比。总结在不同应用场合下如何选取合适的系统拓扑和控制算法。最后对多端口电力电子变压器的发展趋势进行了总结和展望。

With the rapid development of grid technologies such as smart grid and energy internet,multi-port power electronic transformers have become the core equipment of AC/DC hybrid microgrid.Research on related theories and technologies has received more and more attention.However,in general,the technology of multi-port power electronic transformers is not mature,and there are still many places that need to be studied in depth.This paper mainly summarizes the different topology and control algorithm of power electronic transformer,and proposes how to select the appropriate topology and control algorithm in different application situations.By analyzing the development history of multi-port power electronic transformer,the circuit topology,cost,efficiency,availability and control algorithm of multi-port power electronic transformer are analyzed and compared.This paper summarizes how to select the appropriate system topology and control algorithm in different applications.Finally,the development trend of multi-port power electronic transformer is summarized and prospected.