Power losses distribution in the litz-wire winding of an inductor for an induction cooking appliance

Author

Hernandez, P. ; Monterde, F. ; Burdio, J.M. ; Garcia, J.R. ; Llorente, S.

Author_Institution

Dpto. Ingenieria Electronica y Comunicaciones, Zaragoza Univ., Spain

Volume

2

fYear

2002

fDate

5-8 Nov. 2002

Firstpage

1134

Abstract

In this paper the squared-field-derivative method for calculating the losses in the winding of an inductor for induction cooking is derived. It is based on a 2D finite-element eddy-current simulation. For a given geometry just one simulation is needed for the analysis. The equivalent resistance of the winding and the optimum number of strands for a wire diameter and frequency are obtained. The distribution of the resistance inside the winding is obtained too, in order to localize the hot spots of the inductor. Also how the resistance of the winding change due to temperature caused by the variation of the conductivity of the winding material and the permeability of the materials which form the load (cookware).

Keywords

eddy currents; electrical conductivity; finite element analysis; induction heating; inductors; losses; ovens; windings; 2D finite-element eddy-current simulation; equivalent resistance; hot spots; induction cooking appliance; inductor; litz-wire winding; losses; materials permeability; power losses distribution; squared-field-derivative method; winding; wire diameter; Analytical models; Conducting materials; Finite element methods; Frequency; Geometry; Home appliances; Inductors; Solid modeling; Temperature; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]

Print_ISBN

0-7803-7474-6

Type

conf

DOI

10.1109/IECON.2002.1185432

Filename

1185432