Chen, Q., Xia, Y., Wang, J. orcid.org/0000-0003-4870-3744 et al. (2 more authors) (2022) Short-circuit fault-tolerant control for five-phase fault-tolerant permanent magnet motors with trapezoidal back-EMF. Fundamental Research, 2 (6). pp. 964-973. ISSN 2667-3258
Abstract
When a short-circuit fault occurs in a phase, the faulty phase needs to be removed artificially from the system because of the loss of the capability to generate torque. In this case, both the short-circuit current and phase-loss fault would generate additional torque ripples. In this study, a novel fault-tolerant control strategy is introduced to achieve low torque ripple operation of five-phase fault-tolerant permanent magnet synchronous motors with trapezoidal back electromotive force (FTPMSM-TEMF) in the event of a short-circuit fault. The key concept of this method is to compensate for the torque ripples caused by the short-circuit current and the adverse effect of the phase-loss. Based on the torque expression under fault conditions, the torque ripple caused by the short-circuit current can be offset by injecting a certain pulsating component into the torque expression in the phase-loss condition. This would result in smooth operation under fault conditions. Moreover, to track the fault-tolerant alternating currents, the model of the deadbeat current predictive control is extended and restructured for the fault condition. The effectiveness and feasibility of the proposed fault-tolerant strategy are verified by experimental results.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 The Authors. Publishing Services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Short-circuit fault; Five-phase fault-tolerant permanent magnet synchronous motor; Trapezoidal back electromotive force; Fault-tolerant; Deadbeat current predictive control |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Jan 2022 07:33 |
Last Modified: | 05 Jan 2023 11:02 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.fmre.2021.09.009 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:182739 |