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Prediction of flux loss in a Nd-Fe-B ring magnet considering magnetizing process


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Title: Prediction of flux loss in a Nd-Fe-B ring magnet considering magnetizing process
Authors: Fukunaga, Hirotoshi / Koreeda, H / Yanai, Takeshi / Nakano, M / Yamashita, F
Issue Date: 1-Jan-2010
Publisher: IOP Publishing
Citation: Journal of Physics: Conference Series, 200(8), 082006; 2010
Abstract: We developed a technique to predict flux loss of a magnet with a complicated magnetization pattern using the finite element method. The developed method consists of four steps. At first, the distribution of magnetization under magnetizing field is analyzed (Step 1), and a demagnetization curve of each element is deduced from the result of the first step (Step 2). After removing the magnetizing field, the distributions of magnetization at room and elevated temperatures are analyzed by using demagnetization curves determined in Step 2 (Step 3). Based on a physical model, the distribution of flux loss due to exposure at the elevated temperature is predicted by using the result obtained in Step 3 (Step 4). We applied this technique to a ring magnet with 10 poles, and large flux loss values were predicted at the transition regions between magnetic poles.
Description: International Conference on Magnetism, ICM 2009; Karlsruhe; 26 July 2009 through 31 July 2009
URI: http://hdl.handle.net/10069/24973
ISSN: 17426588
DOI: 10.1088/1742-6596/200/8/082006
Rights: © 2010 IOP Publishing Ltd. / This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics: Conference Series. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at http://dx.doi.org/10.1088/1742-6596/200/8/082006.
Type: Journal Article
Text Version: author
Appears in Collections:Conference Paper

Citable URI : http://hdl.handle.net/10069/24973

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