Modeling and Computation of Losses in Conductors and Magnetic Cores of a Large Air Gap Transformer Dedicated to Contactless Energy Transfer

Author

Sibué, Jean-Romain ; Meunier, Gérard ; Ferrieux, Jean-Paul ; Roudet, James ; Périot, Robert

Author_Institution

Grenoble-INP, Grenoble Electr. Eng. Lab., UJF, St. Martin d´´Hères, France

Volume

49

Issue

1

fYear

2013

fDate

Jan. 2013

Firstpage

586

Lastpage

590

Abstract

This paper focuses on the study of the losses in conductors and magnetic cores of a large air gap transformer dedicated to contactless energy transfer. It is composed of two E -shaped cores and two windings. In order to estimate the losses, homogenization method and three-dimensional finite-element method (3D-FEM) have been used. Indeed, the equivalent complex properties of the windings composed of Litz wire, and magnetic core in ferrite have been calculated from homogenization method. Then, they have been implemented in 3D-FEM simulations to compute copper and iron losses with accuracy and by considering working condition of the magnetic component. Theoretical approach is validated by experimental results for a prototype of 1.6 kW-100 kHz.

Keywords

air gaps; finite element analysis; losses; transformer cores; transformer windings; 3D-FEM simulations; E-shaped cores; Litz wire; conductors; contactless energy transfer; copper losses; equivalent complex properties; frequency 100 kHz; homogenization method; iron losses; large air gap transformer; magnetic component; magnetic cores; power 1.6 kW; three-dimensional finite-element method; windings; Conductors; Finite element methods; Magnetic cores; Magnetic flux; Permeability; Solid modeling; Windings; Finite-element method (FEM); homogenization; large air gap transformer; losses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2211031

Filename

6256732