中国电机工程学报2025，Vol.45Issue(17)：6752-6763,中插13,13.DOI:10.13334/j.0258-8013.pcsee.240530
一种适用于IIOS型光伏直流汇集系统的新型短路故障容错拓扑
A Novel Short-circuit Fault-tolerant Topology for IIOS Photovoltaic DC Collection System
摘要
Abstract
The photovoltaic(PV)DC boosting collection system with input-independent output-series(IIOS)type is prone to short-circuit fault on the DC side,which will seriously affect the stable operation of the collection system.In extreme cases,a large number of switching devices in the system may be damaged.In order to solve this problem,this paper proposes a new short-circuit fault-tolerant topology,which can ensure the normal operation of the collection system during low-voltage side short-circuit fault,and can quickly remove the fault current during medium-voltage side short-circuit fault.Compared with the existing schemes,the proposed topology significantly reduces the number of switching devices,reduces device stress,improve the fault tolerance of low-voltage side short-circuit fault,realizes the soft switching of some semiconductor devices,and effectively improves the operation efficiency and reliability of the collection system.In this paper,the working principle and control strategy of the proposed topology are analyzed in detail,and its effectiveness is verified by simulation and experiment.关键词
独立输入串联输出/光伏/直流汇集/短路故障Key words
input-independent output-series(IIOS)/photovoltaic/DC collection/short circuit fault分类
信息技术与安全科学引用本文复制引用
郭珂,刘朋超,莫智荣,禄子昂,杨小林,李淞轩..一种适用于IIOS型光伏直流汇集系统的新型短路故障容错拓扑[J].中国电机工程学报,2025,45(17):6752-6763,中插13,13.基金项目
国家自然科学基金项目(52107177).Project Supported by National Natural Science Foundation of China(52107177). （52107177）
