Title :
The layer copper factor, although widely used and useful, has no theoretical base [SMPS transformers]
Author :
Robert, Frédéric ; Mathys, P. ; Schauwers, Jean-Pierre
Author_Institution :
Dept. of Electron., Univ. Libre de Bruxelles, Belgium
Abstract :
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
Keywords :
losses; power transformers; switched mode power supplies; transformer windings; 1D analytical models; 2D field effects modelling; SMPS transformers; empirical correcting factor; high-frequency effects; layer copper factor; magnetic devices; ohmic losses; Analytical models; Conductors; Copper; Frequency; Hafnium; Inductors; Magnetic devices; Magnetic losses; Switched-mode power supply; Transformer cores;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.880549
