A closed-form formula for 2D ohmic losses calculation in SMPS transformer foils
- 1 January 1999
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1, 199-205 vol.1
- https://doi.org/10.1109/apec.1999.749510
Abstract
A new closed-form formula aimed at calculating ohmic losses in switch-mode power supply transformers is presented. It is based on intensive 2D finite element method simulation. Only valid for one-layer-foil windings at the moment, it accurately covers cases where the classical Dowell's formula significantly underestimated the losses.Keywords
This publication has 4 references indexed in Scilit:
- Edge effect analysis in a high-frequency transformerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Ohmic losses calculation in SMPS transformers: numerical study of Dowell's approach accuracyIEEE Transactions on Magnetics, 1998
- A novel approach for minimizing high-frequency transformer copper lossesIEEE Transactions on Power Electronics, 1988
- Effects of eddy currents in transformer windingsProceedings of the Institution of Electrical Engineers, 1966