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Demagnetizing Factors for Various Geometries Precisely Determined Using 3-D Electromagnetic Field Simulation

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3 Author(s)
Pugh, B.K. ; Univ. of Dayton, Dayton, OH, USA ; Kramer, D.P. ; Chen, C.H.

Recent research results demonstrate that demagnetizing factors for various geometries can be precisely determined by employing 3-D electromagnetic field simulation. Using a technique developed by the authors, the demagnetizing factor resulting from the simulations match very well with experimental results for several series of samples with various geometries. The simulation technique developed by this project was also used for a spherical magnet using various field conditions, which has further proved the accuracy of this technique, whose results agree precisely with the theoretical analyses and mathematical calculation. Such simulation provides advantages over other methods including mathematical calculation and experimental measurement. Since any geometry with any dimensions can be simulated using the electromagnetic field simulation, the simulated results of “N” values can be stored in a data bank for any application using open-circuit measurements in the future.

Published in:

Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 10 )

Date of Publication:

Oct. 2011

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