Fault-tolerant control of an open-winding brushless doublyfed wind power generator system with dual three-level converter  

作　　者：Shi JIN Long SHI Sul ADEMI Yue ZHANG Fengge ZHANG 

机构地区：[1]School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China [2]Warwick Manufacturing Group,University of Warwick,Coventry CV47AL,Warwick,UK [3]School of Electrical Engineering,Shandong University,Jinan 250061,China

出　　处：《Frontiers in Energy》2023年第1期149-164,共16页能源前沿（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.51537007).

摘　　要：To improve the fault redundancy capability for the high reliability requirement of a brushless doubly-fed generation system applied to large offshore wind farms,the control winding of a brushless doubly-fed reluctance generator is designed as an open-winding structure.Consequently,the two ends of the control winding are connected via dual three-phase converters for the emerging open-winding structure.Therefore,a novel fault-tolerant control strategy based on the direct power control scheme is brought to focus in this paper.Based on the direct power control(DPC)strategy,the post-fault voltage vector selection method is explained in detail according to the fault types of the dual converters.The fault-tolerant control strategy proposed enables the open-winding brushless doubly-fed reluctance generator(BDFRG)system to operate normally in one,two,or three switches fault of the converter,simultaneously achieving power tracking control.The presented results verify the feasibility and validity of the scheme proposed.

关 键 词：open-winding brushless doubly-fed reluctance generator(BDFRG) direct power control faulttolerant control multi-level converter wind power 

分 类 号：TM614[电气工程—电力系统及自动化]