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Eddy Current Loss Estimation of Edge Burr-Affected Magnetic Laminations Based on Equivalent Electrical Network—Part I: Fundamental Concepts and FEM Modeling

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

Eddy Current Loss Estimation of Edge Burr-Affected Magnetic Laminations Based on Equivalent Electrical Network—Part I: Fundamental Concepts and FEM Modeling Thumbnail


Authors

Hamed Hamzehbahmani

Philip Anderson

Jeremy Hall

David Fox



Contributors

Abstract

Cutting and punching of the electrical steel can cause edge burrs which lead to interlaminar short circuits between the laminations. In this paper, based on an equivalent electric circuit of the eddy current path, an analytical method has been developed to estimate the eddy current power loss of the magnetic cores, caused by the interlaminar faults, in a wide range of flux density and magnetizing frequency. Important factors, such as skin effect, nonuniform flux density distribution, complex relative permeability, and the nonlinear relation of B (H), which are often neglected in the literature, are highlighted. Fundamental concepts of the interlaminar fault and its consequences, the effect of interlaminar faults on the configuration of magnetic cores, and finite-element method verification are presented in this Part I paper. Modeling of eddy current, together with experimental results of eddy current measurements of packs of shorted laminations, are reported in Part II.

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 I: Fundamental Concepts and FEM Modeling. IEEE Transactions on Power Delivery, 29(2), 642-650. https://doi.org/10.1109/tpwrd.2013.2272663

Journal Article Type Article
Acceptance Date Jun 29, 2013
Online Publication Date Jul 30, 2013
Publication Date Jul 30, 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 642-650
DOI https://doi.org/10.1109/tpwrd.2013.2272663

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