Title :
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
fDate :
3/1/1993 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
