The step-function approximation of the magnetisation characteristic is used systematically to develop equations describing direct resistance heating of a steel bar. The equations for the inductively heated thick plate follow as a limiting case. Sinusoidal applied current (field) or sinusoidal applied voltage conditions are considered.
Get full access to this article
View all access options for this article.
References
1.
AgarwalP. D., ‘Eddy-current losses in solid and laminated iron’, IEEE Trans., 78 (11), pp. 169–181 (1959)
2.
LammeranerJ. and StallM., Eddy Currents, Illiffe Books Ltd. (1966)
3.
StollR. L., The Analysis of Eddy Currents, Clarendon Press, Oxford (1974)
4.
DaviesE. J. and BowdenA. L., ‘Direct resistance heating of ferromagnetic billets’, 7th International Congress on Electroheat, Warsaw, Paper N628 (1972)
5.
BurkeP. E. and LaversJ. D., ‘Resistance heating of a circular billet — two simple analytic models’, IEEE-I.A.S., Electric Process Heating Conf. Rec. (1977)
6.
LimK. K. and HammondP., ‘Numerical method for determining the electromagnetic field in saturated steel plates’, Proc. IEE, 119 (11), pp. 1667–1674 (1972)
