Tousizadeh, Mahdi and Che, Hang Seng and Abdel-Khalik, Ayman Samy and Munim, W. N. W. A. and Selvaraj, Jeyraj and Abd Rahim, Nasrudin (2021) Effects of flux derating methods on torque production of fault-tolerant polyphase inductiondrives. IET Electric Power Applications, 15 (5). pp. 616-628. ISSN 1751-8660, DOI https://doi.org/10.1049/elp2.12052.
Full text not available from this repository.Abstract
Fault-tolerant drives have been gaining increasing attention due to the need to enhance the reliability and robustness of electric drive systems, particularly for safety critical applications. However, in postfault control, it is often necessary to derate the machine, that is to reduce the torque and/or flux currents, to satisfy the current constraints of the power electronic devices. For induction motors, there are different approaches to quantify the current components in postfault operation while maintaining a stable operation within the current constraints. The efficiency enhancement of a faulted drive through flux current reduction is one of the methods reported in literature, however, the details of power components, that is, achievable torque and speed, are not addressed. This study broadly investigates the effect of flux and/or torque current partitioning on postfault capability of polyphase (three and more phases) induction machines in terms of achievable torque and speed. It is demonstrated that the magnetising inductance characteristics, which depend on the machine design and its power rating, have a profound effect on the choice of postfault current partitioning, and hence the machine performance. Theoretical discussion is supported with experimental verification using three-phase and symmetrical six-phase induction motors.
| Item Type: | Article |
|---|---|
| Funders: | UMPEDAC - 2018 (MOHE HICOE - UMPEDAC), Ministry of Education Malaysia, University of Malaya (TOP100UMPEDAC) (RU005-2015) (MO013-2016) |
| Uncontrolled Keywords: | Fault tolerance (Engineering); Power electronics devices; Electric motors, induction; Machine performance; |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 07 Apr 2022 04:08 |
| Last Modified: | 07 Apr 2022 04:08 |
| URI: | http://eprints.um.edu.my/id/eprint/28332 |
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