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Abstract
In ID analytical models aimed at calculating eddy current losses in magnetic devices subject to high-frequency effects, the “layer copper factor” is classicaly used to take layers composed of several conductors into account. In this paper, we discuss the theoretical base of this factor, showing that the equations used in Dowell’s basic paper are inconsistent with Ampere’s law. As a conclusion, the layer copper factor is re-interpreted as a true empirical correcting factor which can be used to model several 2D effects of the fields inside the windings.
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F Robert
Frederic Robert was born in Brussels in 1972. He received the M.S. degree in electronics and telecommunications engineering in 1995 and the Ph. D. degree in applied sciences in 1999 from the Université Libre de Bruxelles (U.L.B.). Belgium. He is now teaching and research assistant in the Electronics and Microelectronics group (Applied Science Faculty) of the Université Libre de Bruxelles.