An improved design of a dc-dc converter using an integrated magnetic component

Author

Kerim, Aiman ; Ferrieux, Jean Paul ; Roudet, James ; Catellani, Stéphane ; Benqass, Hassan

Author_Institution

Grenoble Electr. Eng. Lab. ENSIEG, Grenoble

fYear

2008

fDate

24-28 Feb. 2008

Firstpage

614

Lastpage

618

Abstract

This paper presents a detailed analysis of an integrated magnetic structure. A generalized analytical designing formula of an integrated magnetic component is introduced. An improved numerical method is applied to estimate the proximity losses due to currents waveforms in an integrated magnetic half-bridge dc/dc converter, which are not sinusoidal. This method is based on the homogenizing of the electric conductors with a complex permeability. This improved method of homogenizing Litz wires is applied to an integrated structure using finite elements software. Computer simulation results are presented for 1 kW, 48-V integrated current-doubler rectifier. A prototype has been implemented and tested. Experimental results confirm the theoretical study and simulation

Keywords

DC-DC power convertors; bridge circuits; conductors (electric); finite element analysis; Litz wires; complex permeability; computer simulation; electric conductors; finite elements software; integrated current-doubler rectifier; integrated magnetic component; integrated magnetic half-bridge dc-dc converter; power 1 kW; proximity losses; voltage 48 V; Computer simulation; Conductors; DC-DC power converters; Finite element methods; Magnetic analysis; Permeability; Prototypes; Rectifiers; Software prototyping; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Conference_Location

Austin, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-1873-2

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2008.4522784

Filename

4522784