Effects of zero-sequence transformations and min-max injection on fault-tolerant symmetrical six-phase drives with single isolated neutral

Munim, Wan Noraishah Wan Abdul and Tousizadeh, Mahdi and Che, Hang Seng (2019) Effects of zero-sequence transformations and min-max injection on fault-tolerant symmetrical six-phase drives with single isolated neutral. Journal of Power Electronics, 19 (4). pp. 968-979. ISSN 1598-2092,

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Official URL: http://koreascience.or.kr/article/JAKO201920061453...

Abstract

Recently, there has been increased interest in the study of multiphase machines due to their higher fault-tolerant capability when compared to their conventional three-phase counterparts. For six-phase machines, stator windings configured with a single isolated neutral (1N) provide significantly more post-fault torque/power than two isolated neutrals (2N). Hence, this configuration is preferred in applications where post-fault performance is critical. It is well known that min-max injection has been commonly used for three-phase and multiphase machines in healthy condition to maximize the modulation limit. However, there is a lack of discussion on min-max injection for post-fault condition. Furthermore, the effects in terms of the common-mode voltage (CMV) in modulating signals has not been discussed. This paper investigates the effect of min-max injection in post fault-tolerant control on the voltage and speed limit of a symmetrical six-phase induction machine with single isolated neutral. It is shown that the min-max injection can minimize the amplitude of reference voltage, which maximizes the modulation index and post-fault speed of the machine. This in turn results in a higher post-fault power. © 2019 KIPE.

Item Type: Article
Funders: Malaysian government through the Malaysian Ministry of Higher Education (MOHE) under project number MO013-2016, Universiti Teknologi MARA (UiTM)
Uncontrolled Keywords: Current control; Fault-tolerant; Min-max injection; Multiphase machine; Symmetrical six-phase
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. Juhaida Abd Rahim
Date Deposited: 03 Mar 2020 07:34
Last Modified: 03 Mar 2020 07:34
URI: http://eprints.um.edu.my/id/eprint/23935

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