Central-tapped node linked modular fault tolerance topology for SRM applications
Hu, Yihua and Gan, Chun and Cao, Wenping and Li, Wuhua and Finney, Stephen (2016) Central-tapped node linked modular fault tolerance topology for SRM applications. IEEE Transactions on Power Electronics, 31 (2). pp. 1541-1554. ISSN 0885-8993 (https://doi.org/10.1109/TPEL.2015.2414664)
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Abstract
Electric vehicles (EVs) and hybrid electric vehicles (HEVs) can reduce greenhouse gas emissions while switched reluctance motor (SRM) is one of the promising motor for such applications. This paper presents a novel SRM fault diagnosis and fault tolerance operation solution. Based on the traditional asymmetric half-bridge topology for SRM driving, the central tapped winding of SRM in modular half bridge configuration are introduced to provide fault diagnosis and fault tolerance functions, which are set idle in normal conditions. The fault diagnosis can be achieved by detecting the characteristic of the excitation and demagnetization currents. An SRM fault tolerance operation strategy is also realized by the proposed topology, which compensates for the missing phase torque under the open-circuit fault, and reduces the unbalanced phase current under the short-circuit fault due to the uncontrolled faulty phase. Furthermore, the current sensor placement strategy is also discussed to give two placement methods for low cost or modular structure. Simulation results in Matlab/Simulink and experiments on a 750 W SRM validate the effectiveness of the proposed strategy, which may have significant implications and improve the reliability of EVs/HEVs.
ORCID iDs
Hu, Yihua, Gan, Chun, Cao, Wenping, Li, Wuhua and Finney, Stephen ORCID: https://orcid.org/0000-0001-5039-3533;-
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Item type: Article ID code: 56741 Dates: DateEvent1 February 2016Published18 March 2015Published Online9 March 2015AcceptedNotes: (c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Subjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 24 Jun 2016 14:50 Last modified: 16 Oct 2024 00:24 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/56741