Yepes, Alejandro G. and Abdel-Majeed, Mahmoud Said and Che, Hang Seng and Abdel-Khalik, Ayman Samy and Ahmed, Shehab and Doval-Gandoy, Jesus (2023) DC-signal injection for stator-resistance estimation in symmetrical six-phase induction motors under open-phase fault. IEEE Transactions on Industrial Electronics, 70 (6). pp. 5444-5453. ISSN 0278-0046, DOI https://doi.org/10.1109/TIE.2022.3192695.
Full text not available from this repository.Abstract
Multiphase machines are often chosen due to their enhanced fault tolerance. Six-phase ones are especially convenient because they may be fed by off-the-shelf three-phase converters. In particular, those with symmetrical windings offer superior postfault capabilities. On the other hand, estimation of the stator resistance is important for purposes such as thermal monitoring and preserving control performance. Resistance estimation by dc-signal injection provides low sensitivity to parameter deviations compared with other techniques. It has previously been shown that the dc signal can be added in the nontorque-producing (x-y) plane of a six-phase machine to avoid the torque disturbances that typically arise in three-phase machines. However, extending this method to the case of an open-phase fault (OPF) is not straightforward because of the associated current restrictions. This article addresses dc-signal injection in a symmetrical six-phase induction motor with an OPF. It is shown that, in contrast to healthy operation, the postfault dc injection should be carefully performed so that minimum copper loss, peak phase current, and zero-sequence braking torque are achieved. A solution that attains optimum performance in all these aspects simultaneously is proposed. Adapted controller and resistance estimation are also presented. Experimental results confirm the theory.
| Item Type: | Article |
|---|---|
| Funders: | Malaysian Ministry of Higher Education (MOHE) through Fundamental Research Grant Scheme (FP090-2020) |
| Uncontrolled Keywords: | Resistance; Estimation; Stator windings; Torque; Harmonic analysis; Torque measurement; Windings; Fault tolerance; multiphase drives; signal injection; six-phase machine; stator resistance; variable-speed drives |
| Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science 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: | 23 Nov 2023 00:20 |
| Last Modified: | 23 Nov 2023 00:20 |
| URI: | http://eprints.um.edu.my/id/eprint/38250 |
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