A closed-form formula for 2-D ohmic losses calculation in SMPS transformer foils.

A new formula aimed at calculating ohmic losses in switch-mode power supply (SMPS) transformers is presented. It is based on intensive two-dimensional (2-D) finite element method (FEM) simulations, the results of which have been summarized in a closed-form formula following a ?semi-empirical? approa...

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Detalhes bibliográficos
Publicado no:	IEEE Transactions on power electronics 16, 3 (2001).
Autor principal:	Robert, F.
Formato:	Artigo
Idioma:	English
Assuntos:	1-D models. 2-D FEM simulations. 2-D models. 2-D ohmic losses calculation. Dowell's formula. Maxwell equations. SMPS transformer foils. Closed-form formula. Edge effect. Foil windings. Losses underestimation. Magnetomotive force. One-dimensional models. Skin effect. Stand-alone tool. Switch-mode power supply. Two-dimensional finite element method simulations.