Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801572 | Journal of Magnetism and Magnetic Materials | 2008 | 6 Pages |
Abstract
Rare earth permanent magnets are very sensitive to temperature as an overheating can lead to a partial or a total demagnetization. It is then necessary to determine the losses in the permanent magnets to design with accuracy an electromagnetic system. In fact, if the permanent magnet experiences a high frequency magnetic field, significant losses appear. In the literature, these losses are calculated assuming the permanent magnet to be a bulk conductive material. In this work, we aim at verifying this assumption and we give a method to determine the equivalent conductivity. Then, we present a comparison between calculated and measured characteristics of two permanent magnet samples.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A. Benabou, S. Georges, S. Clénet,