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 logoORCID: https://orcid.org/0000-0001-5039-3533;
  • Item type:Article
    ID code:56741
    Dates:
    Date
    Event
    1 February 2016
    Published
    18 March 2015
    Published Online
    9 March 2015
    Accepted
    Notes:(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:11 Nov 2024 11:05
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/56741
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