Typology and working mechanism of a hybrid power router based on power-frequency transformer electromagnetic coupling with converters  

作　　者：Jinmu Lai Xin Yin Xianggen Yin Jiaxuan Hu Fan Xiao 

机构地区：[1]School of Electrical and Information Engineering,Zhengzhou University,Zhengzhou 450001,Henan Province,People’s Republic of China [2]School of Automation,Wuhan University of Technology,Wuhan 430070,Hubei Province,People’s Republic of China [3]School of Electrical and Electronic Engineering,Huazhong University of Science and Technology(HUST),Wuhan 430074,Hubei Province,People’s Republic of China [4]State Grid Hubei Electric Power Research Institute,Wuhan 430077,Hubei Province,People’s Republic of China

出　　处：《Protection and Control of Modern Power Systems》2023年第3期80-96,共17页现代电力系统保护与控制（英文）

基　　金：supported in part by the National Natural Science Foundation of China(Grant No.52007010);in part by State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Grant No.AEET 2022KF003).

摘　　要：The power router(PR)is a promising piece of equipment for realizing multi-voltage level interconnection and flex-ible power control in the future distribution power grid.In this paper,a hybrid PR(HPR)topology based on power-frequency transformer electromagnetic coupling with converters is proposed for the medium distribution power grid.The power-frequency transformer is used to undertake power transmission,voltage conversion,and other main tasks,while the power electronic converters are combined to achieve active control.Equivalent magnetic and electrical circuit models are established to help discuss the operating principle of the proposed HPR.Additionally,the power flow and control principle of the HPR in different operating conditions are analyzed,with the control system design scheme presented.The theoretical analysis results are verified by MATLAB/Simulink+Plecs simulation and a controller hardware-in-the-loop study,as well as a down-scale experimental test,indicating that the proposed HPR is flexible in active voltage support and current control.

关 键 词：Power router Power-frequency transformer Power electronic converter Hybrid Working mechanism 

分 类 号：TM712[电气工程—电力系统及自动化]