A Novel Fault Indicator for Local Demagnetization in Fractional-Slot Permanent Magnet Synchronous Motor using Winding Function Theory

Golzar, Milad; Kandukuri, Surya Teja; Huynh, Khang; Choux, Martin Marie Hubert; Versland, Alf Magne
Journal article, Peer reviewed
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https://hdl.handle.net/11250/2731921
Date
2020
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Golzar, M., Kandukuri, S. T., Huynh, K., Choux, M. M. H. & Versland, A. M. (2020). A Novel Fault Indicator for Local Demagnetization in Fractional-Slot Permanent Magnet Synchronous Motor using Winding Function Theory. Proceedings of the European Conference of the Prognostics and Health Management Society, 5(1). Retrieved from: https://papers.phmsociety.org/index.php/phme/article/view/1240  
Abstract
Local demagnetization is an irreparable failure mode in permanent magnet synchronous motors (PMSMs), resulting in reduced motor efficiency and high cogging torque. These effects are particularly disadvantageous to fractional-slot wound PMSMs used in industrial applications, such as robotics and automations, that require high power density and precise operation. In this article, a diagnostic indicator is developed for detecting local demagnetization fault in fractional-slot wound PMSMs based on winding function theory, utilizing back-electromotive force (back-EMF) as a medium for fault detection. Further, the developed indicator is validated in a commercial fractional-slot wound PMSM of an in-house experimental setup.
Publisher
Prognostics and Health Management Society
Journal
Proceedings of the European Conference of the Prognostics and Health Management Society
Copyright
© 2020 The Author(s)
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