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Effect of Artificial Burrs on Local Power Loss in a Three-Phase Transformer Core

Mazurek, Rafal; Hamzehbahmani, Hamed; Moses, Anthony; Anderson, Philip; Anayi, Fatih; Belgrand, Thierry

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Authors

Rafal Mazurek

Hamed Hamzehbahmani

Anthony Moses

Philip Anderson

Fatih Anayi

Thierry Belgrand



Contributors

Abstract

The increase in losses due to burrs occurring on cut edges of electrical steel laminations in transformer cores is difficult to quantify. Artificial burrs were applied to a 350 kVA, three-phase, five packet, transformer core. Total core loss, flux density distribution and local loss near the burrs were measured. Burrs applied to a portion of a packet of laminations in one limb caused the flux distribution to become more nonuniform than normal throughout the whole core. Local losses increased significantly outside the burr region. The loss increased to over 1000 W/kg in the severely burred region at 1.8 T, 50 Hz. Measured flux distribution data was used in simplified eddy current calculations to predict the total and localized losses. The predicted and measured localised losses in the burred regions followed similar trends but did not agree well in magnitude probably due to the errors caused by the simplifications and assumptions which were necessary in the eddy current analysis.

Citation

Mazurek, R., Hamzehbahmani, H., Moses, A., Anderson, P., Anayi, F., & Belgrand, T. (2012). Effect of Artificial Burrs on Local Power Loss in a Three-Phase Transformer Core. IEEE Transactions on Magnetics, 48(4), 1653-1656. https://doi.org/10.1109/tmag.2011.2173668

Journal Article Type Article
Acceptance Date Oct 13, 2011
Online Publication Date Mar 12, 2012
Publication Date Mar 12, 2012
Deposit Date Aug 13, 2018
Publicly Available Date Feb 5, 2019
Journal IEEE Transactions on Magnetics
Print ISSN 0018-9464
Electronic ISSN 1941-0069
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 48
Issue 4
Pages 1653-1656
DOI https://doi.org/10.1109/tmag.2011.2173668

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