Resistive losses of conductors carrying SMPS current waveforms

Author

Femia, K. ; Lamberti, P. ; Spagnuolo, G. ; Vitelli, M.

Author_Institution

DIIIE, Salerno Univ., Italy

fYear

2002

fDate

3-4 June 2002

Firstpage

47

Lastpage

52

Abstract

The study of 2-D skin-effect and proximity-effect transient problems by means of a formulation based on a magnetic vector potential A and on a scalar potential φ is presented. As an application of the proposed method, the equivalent per-unit length resistance of conductors carrying typical switch-mode power supplies (SMPS) nonsinusoidal current waveforms has been evaluated. The analysis clearly reveals that it depends both on switching frequency and duty-cycle and is rather different from DC and AC sinusoidal equivalent parameters. Some examples of evaluation of proximity losses in two adjacent conductors are also provided.

Keywords

conductors (electric); losses; skin effect; switched mode power supplies; transient analysis; 2-D skin-effect; AC sinusoidal equivalent parameters; DC sinusoidal equivalent parameters; SMPS current waveforms; adjacent conductors; conductors; duty-cycle; equivalent per-unit length resistance; magnetic vector potential; nonsinusoidal current waveforms; proximity-effect transient problems; resistive losses; scalar potential; switching frequency; Conductivity; Conductors; Current distribution; Frequency; Magnetic flux; Permeability; Proximity effect; Skin effect; Switched-mode power supply; Switching converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Power Electronics, 2002. Proceedings. 2002 IEEE Workshop on

ISSN

1093-5142

Print_ISBN

0-7803-7554-8

Type

conf

DOI

10.1109/CIPE.2002.1196714

Filename

1196714