Turn–turn short circuit fault management in permanent magnet machines

Puvan Arumugam; Tahar Hamiti; Chris Gerada

Turn–turn short circuit fault management in permanent magnet machines

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Author(s): Puvan Arumugam ¹ ; Tahar Hamiti ¹ ; Chris Gerada ¹
- Affiliations: 1: Power Electronics Machines and Control (PEMC) Group, Faculty of Engineering, University of Nottingham, Nottingham, UK
Source: Volume 9, Issue 9, November 2015, p. 634 – 641
DOI: 10.1049/iet-epa.2015.0020 , Print ISSN 1751-8660, Online ISSN 1751-8679

Received 22/01/2015, Accepted 01/07/2015, Revised 04/06/2015, Published 01/11/2015

This study presents a systematic study on turn–turn short circuit (SC) fault and ways to manage them to provide a basis for comparison of the various options available. The possible methods to reduce the likelihood of the winding SC fault and the fault mitigation techniques related to such faults are discussed. A finite-element analysis of a surface-mounted permanent magnet machine under application of different mitigation techniques during a turn–turn fault is presented. Both machine and drive structural adaptations for different fault mitigation techniques are addressed. Amongst the investigated fault mitigation techniques, the most promising solution is identified and validated experimentally. It is shown that the shorting terminal method adopting vertical winding arrangement is an effective method in terms of the implementation, reliability and weight.

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