DocumentCode
1413167
Title
Ohmic losses calculation in SMPS transformers: numerical study of Dowell´s approach accuracy
Author
Robert, Frederic ; Mathys, Pierre ; Schauwers, Jean-Pierre
Author_Institution
Univ. Libre de Bruxelles, Belgium
Volume
34
Issue
4
fYear
1998
fDate
7/1/1998 12:00:00 AM
Firstpage
1255
Lastpage
1257
Abstract
The paper compares two methods for ohmic losses calculation in switch-mode power supply transformers: Dowell´s 1D approach and 2D finite element method simulations (validated by measurements). Dowell´s method underestimates losses at the fundamental frequency for foil windings, whereas harmonic losses are generally overestimated (depending on conductor type). More significant differences are found with high leakage inductance transformers
Keywords
finite element analysis; harmonics; inductance; magnetic leakage; switched mode power supplies; transformer windings; transformers; 2D finite element method; Dowell´s 1D approach; SMPS transformers; conductor type; foil windings; harmonic losses; high leakage inductance transformers; ohmic losses calculation; switch-mode power supply; Conductors; Electromagnetic fields; Finite element methods; Magnetic analysis; Magnetic fields; Power system harmonics; Power system simulation; Switched-mode power supply; Transformers; Wire;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.706513
Filename
706513
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