Yepes, Alejandro G. and Abdel-Azim, Wessam E. and Shawier, Abdullah and Abdel-Majeed, Mahmoud Said and Che, Hang Seng and Abdel-Khalik, Ayman Samy and Ahmed, Shehab and Doval-Gandoy, Jesus (2023) Online control strategy for tolerating resistance asymmetry with minimum copper loss in the full torque range for symmetrical six-phase AC drives. IEEE Transactions on Power Electronics, 38 (1). pp. 151-164. ISSN 0885-8993, DOI https://doi.org/10.1109/TPEL.2022.3204911.
Full text not available from this repository.Abstract
Multiphase drives exhibit remarkable advantages (e.g., fault tolerance) over three-phase ones. Six-phase drives are particularly attractive, given their moderate complexity and suitability for off-the-shelf three-phase converters. Regarding the stator winding arrangement, the symmetrical one offers superior postfault capabilities in most scenarios. On the other hand, resistance asymmetry in the stator phases or connections may arise due to different causes. The conventional full-range minimum-loss strategy (FRMLS) generates stator-current references under open-phase (infinite resistance) faults so that torque ripple is prevented while minimizing the losses for each torque (d-q current) value and maximizing the torque range; however, this method is unsuitable for unequal resistances of finite value. This article proposes an FRMLS for setting the current references to reach these goals in symmetrical six-phase drives with any resistance asymmetry. The optimum references are found online depending on the resistances, without lookup tables. The phase currents are individually limited by an iterative algorithm, so that minimum stator copper loss (SCL) is achieved over the maximum admissible torque range. In this manner, unlike the conventional FRMLS, minimum SCL and maximum torque range are attained even for finite resistance imbalance. The currents in phases affected by high resistances are suitably reduced. Experimental results are provided.
| Item Type: | Article |
|---|---|
| Funders: | Malaysian Ministry of Higher Education (MOHE) through Fundamental Research Grant Scheme (Grant No: FP090-2020), Science and Technology Development Fund (STDF) (Grant No: 37066), Government of Galicia (Grant No: ED431F 2020/07 & GPC-ED431B 2020/03), Innovation and Universities under the Ramon y Cajal (Grant No: RYC2018-024407-I), Spanish Government (Grant No: PID2019-I05612RB-I00/AEI/10.13039/501100011033) |
| Uncontrolled Keywords: | Fault tolerance; High-resistance connections; Multiphase drives; Resistance asymmetry; Six-phase machine; Variable speed drives |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Nov 2023 09:14 |
| Last Modified: | 29 Nov 2023 09:14 |
| URI: | http://eprints.um.edu.my/id/eprint/39139 |
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