Current distribution in exciting coil conductors in cross-field heating systems

Author

Namjoshi, K.V. ; Biringer, P.P.

Author_Institution

Dept. of Electr. Eng., Toronto Univ., Ont., Canada

Volume

29

Issue

2

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1570

Lastpage

1573

Abstract

The current distribution in the exciting coils of double-sided iron-backed cross-field heating systems is analyzed. The finite-difference method is used to calculate the internal resistance of the winding. The internal resistance is used as a criterion in studying the effect of the load on the winding current distribution. The concept of equivalent surface current density shows the influence of such parameters as the winding cross section and the skin depth. Equivalent surface current density is obtained by placing virtual current sources at the interface of the winding conductor and the air gap. Impedance values calculated using the two methods are in agreement

Keywords

coils; current distribution; electromagnetic devices; finite difference methods; induction heating; metallurgical industries; conductor-air gap interface; cross-field heating systems; current distribution; equivalent surface current density; exciting coil conductors; finite-difference method; impedance values; induction heating; internal resistance; skin depth; virtual current sources; winding cross section; Conductors; Current density; Current distribution; Electric resistance; Heat engines; Iron; Permeability; Resistance heating; Skin; Surface resistance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.250704

Filename

250704