Lookup NU author(s): Bogi Jensen,
Professor Barrie Mecrow
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This paper describes a technique for modeling overlapping laminations in magnetic core materials using two-dimensional finite-element (2-D FE) analysis. The magnetizing characteristic of the overlapping region is captured using a simple 2-D FE model of the periodic overlapping geometry and a composite material is created, which has the same magnetization characteristic. The benefit of this technique is that it allows a designer to perform design and optimization of magnetic cores with overlapped laminations using a 2-D FE model rather than a 3-D FE model, which saves modeling and simulation time. The modeling technique is verified experimentally by creating a composite material of a lap joint with a 3-mm overlapping region and using it in a 2-D FE model of a ring sample made up of a stack of 20 laminations. The B-H curve of the simulated ring sample is compared with the B-H curve obtained experimentally and shown to be a close match.
Author(s): Jensen BB, Guest ED, Mecrow BC
Publication type: Article
Publication status: Published
Journal: IEEE Transactions on Magnetics
Print publication date: 01/06/2015
Online publication date: 04/11/2014
Acceptance date: 24/10/2014
ISSN (print): 0018-9464
ISSN (electronic): 1941-0069
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