Title :
A closed-form formula for 2D ohmic losses calculation in SMPS transformer foils
Author :
Robert, Frédéric ; Mathys, Pierre ; Schauwers, Jean-Pierre
Author_Institution :
Univ. Libre de Bruxelles, Belgium
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 :
finite element analysis; foils; losses; power transformers; switched mode power supplies; transformer windings; 2D finite element method simulation; 2D ohmic losses calculation; SMPS transformer foils; closed-form formula; one-layer-foil windings; switch-mode power supply; Analytical models; Conductors; Current density; Finite element methods; Frequency; Numerical simulation; Power system simulation; Proximity effect; Skin; Switched-mode power supply;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-5160-6
DOI :
10.1109/APEC.1999.749510
