Analysis and Real-Time Calculation of Postfault Current of Standard Surface-Mounted PMSM Drives With Dysfunctional Power Switches

被引:0
|
作者
Zhang, Zeliang [1 ]
Hu, Yihua [2 ]
Luo, Guangzhao [3 ]
Xu, Hui [4 ]
Gong, Chao [5 ]
机构
[1] Univ York, Dept Elect Engn, York YO10 5DD, N Yorkshire, England
[2] Kings Coll London, Dept Engn, London WC2R 2LS, England
[3] Northwestern Polytech Univ, Sch Automat, Xian 710072, Peoples R China
[4] Leeds Beckett Univ, Leeds LS1 3HE, W Yorkshire, England
[5] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2R3, Canada
基金
英国工程与自然科学研究理事会;
关键词
Circuit faults; Switches; Fault tolerant systems; Fault tolerance; Inverters; Integrated circuit modeling; Rails; Open circuits; permanent magnet synchronous motor (PMSM); power switches; FIELD-ORIENTED CONTROL; SYNCHRONOUS MOTORS; DIAGNOSIS; CONVERTERS; OPERATION; FAILURE; DESIGN; FAULTS;
D O I
10.1109/TPEL.2023.3277913
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Fault diagnosis and fault-tolerant control significantly rely on the knowledge of fault mechanisms and postfault states. Regarding open circuits in permanent magnet synchronous motor drives, the postfault states, especially phase voltages, depend on whether the faulty phase is conducting. Under the open-switch fault featuring dysfunctional power switches, the faulty phase is possible to conduct through the still functional diodes. In contrast, the open-phase fault completely blocks the faulty phase. However, the mechanism and effects of the open-switch conduction have not been thoroughly studied, which obscures the boundary between the open-switch fault and the open-phase fault, and fails to realize effective diagnosis and optimal fault-tolerant control. This article not only reveals the mechanism of the open-switch conduction, but also proposes a model that can calculate the postfault conducting current in real time. The proposed model provides an estimation value of the postfault current for further utilization and validates the correctness of the analysis. First, equivalent circuits are analyzed to explain the conduction condition. Subsequently, switching states fulfilling the conditions are studied, and finally, the mathematical model of the postfault current is built. The analysis and model are experimentally validated.
引用
收藏
页码:10104 / 10115
页数:12
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