Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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PARAMETERS OF THE SKIN-LAYER OF MASSIVE FERROMAGNETIC CONDUCTORS IN STEADY STATE WITH SINUSOIDAL ELECTROMAGNETIC FIELD

Nosov G.V. 1 Kosilova D.Y. 1
1 Tomsk Polytechnic University
A method for determining the parameters of the skin-layer of massive ferromagnetic conductors with their heating and non-linear magnetic properties, which can be used for engineering calculations ferromagnetic electromagnetic screens, rotors of dynamo-electric generators and the heated parts in the induction heating devices. The magnetization curve represented by a broken line, wherein the surface conductor layer is divided into several layers with constant values of the differential magnetic permeability, temperature and conductivity. For each layer, the resulting linear problem is solved analytically for the known diffusion equations of sinusoidal electromagnetic field in the conducting half-space. This determines the power loss of heat, magnetic flux, magnetic energy and temperature under adiabatic heating. The obtained parameters allow to find the equivalent thickness of the skin-layer with the average temperature, resistance and internal inductance of a massive conductor.