The layer copper factor, although widely used and useful, has no theoretical base [SMPS transformers]

In 1D analytical models aimed at calculating ohmic losses in magnetic devices subject to high-frequency effects, the "layer copper factor" is classically used to take layers composed of several conductors into account. The authors show that this well-known factor, introduced by Dowell in 1...

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Published in2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018) Vol. 3; pp. 1633 - 1638 vol.3
Main Authors Robert, F., Mathys, P., Schauwers, J.-P.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2000
Subjects
Analytical models
Conductors
Copper
Frequency
Hafnium
Inductors
Magnetic devices
Magnetic losses
Switched-mode power supply
Transformer cores
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Summary:In 1D analytical models aimed at calculating ohmic losses in magnetic devices subject to high-frequency effects, the "layer copper factor" is classically used to take layers composed of several conductors into account. The authors show that this well-known factor, introduced by Dowell in 1966, has no theoretical base due to an error in Dowell's original demonstration. However it is re-interpreted as an empirical correcting factor modeling 2D effects of the fields.
ISBN:0780356926
9780780356924
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2000.880549