Control Parameters Design Procedure for Multi-Converters DC Power System Considering Dynamic Interaction Between Converters  

作　　者：Xueshen Zhao Lin Zhu Li Guo Xialin Li Zhi Wang Hao Lu Chengshan Wang 

机构地区：[1]Key Laboratory of Smart Grid of Ministry of Education,Tianjin University,Tianjin 300072,China

出　　处：《CSEE Journal of Power and Energy Systems》2025年第2期724-738,共15页中国电机工程学会电力与能源系统学报(英文)

基　　金：supported in part by the National Key Research and Development Program of China under Grant 2020YFB1506800;in part by the China Postdoctoral Science Foundation under Grant 2021M692378;in part by the National Natural Science Foundation of China under Grant 51977142.

摘　　要：Due to dynamic interaction between converters, design of control parameters of multi-converters medium-voltage DC (MVDC) power system is much more complicated than of a single-converter situation. Open-loop and closed-loop transfer functions considering control-loops dynamic interaction between converters are developed, which are suitable for studying influence of control parameters on system stability. With the above transfer functions, a system-level control parameter design proce-dure for dynamic stability (e.g., oscillation frequency and damping factor) of system is proposed. If there are many converters, computational burden of system-level control parameters design procedure will be huge. For this reason, a control parameter sharing method is further proposed in this paper, which is based on dynamic interaction mechanism between converters. In this sharing method, control parameters of equivalent reduced-order model of the system are shared with each converter, so calculation burden of control parameters of system is reduced significantly. Consequently, dynamic stability of the system can be designed by equivalent reduced-order model. Experiments are conduced to validate the system-level control parameter design procedure.

关 键 词：Control parameters design procedure dynamic interaction medium-voltage DC(MVDC)power system sharing principle 

分 类 号：TM721[电气工程—电力系统及自动化]