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Eddy Current Loss Estimation of Edge Burr-Affected Magnetic Laminations Based on Equivalent Electrical Network—Part II: Analytical Modeling and Experimental Results

Hamzehbahmani, Hamed; Anderson, Philip; Hall, Jeremy; Fox, David

Eddy Current Loss Estimation of Edge Burr-Affected Magnetic Laminations Based on Equivalent Electrical Network—Part II: Analytical Modeling and Experimental Results Thumbnail


Authors

Hamed Hamzehbahmani

Philip Anderson

Jeremy Hall

David Fox



Contributors

Abstract

In Part I of this two-part paper, fundamental concepts of interlaminar fault and its consequences on magnetic cores were presented. An equivalent configuration, which was proved by FEM modelling, was proposed for magnetic cores with interlaminar fault. In this Part II paper, based on the equivalent configuration of the core and equivalent circuit of eddy current path, an analytical model is developed to estimate eddy current power loss of magnetic cores with interlaminar faults in a wide range of magnetizing frequency. Important factors, such as skin effect, nonuniform flux density distribution, complex relative permeability and nonlinear relation of B (H), which are often neglected in the literature, are highlighted. Packs of two, three, and four Epstein-size laminations of conventional grain oriented were shorted together artificially to measure the extra power loss caused by the interlaminar fault and support the analytical modeling. It was found that in the magnetic cores affected by interlaminar fault, the skin effect is a determinant factor in the magnetic properties determinations, even at low frequencies.

Citation

Hamzehbahmani, H., Anderson, P., Hall, J., & Fox, D. (2013). Eddy Current Loss Estimation of Edge Burr-Affected Magnetic Laminations Based on Equivalent Electrical Network—Part II: Analytical Modeling and Experimental Results. IEEE Transactions on Power Delivery, 29(2), 651-659. https://doi.org/10.1109/tpwrd.2013.2279634

Journal Article Type Article
Acceptance Date Aug 22, 2013
Online Publication Date Nov 8, 2013
Publication Date Nov 8, 2013
Deposit Date Aug 13, 2018
Publicly Available Date Feb 5, 2019
Journal IEEE Transactions on Power Delivery
Print ISSN 0885-8977
Electronic ISSN 1937-4208
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 29
Issue 2
Pages 651-659
DOI https://doi.org/10.1109/tpwrd.2013.2279634

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