Open AccessProximity effect in a thin two-layer tubular conductor caused by a parallel filament
Author(s) -
Dragan Filipovic,
Tatijana Dlabač
Publication year - 2022
Publication title -
serbian journal of electrical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.133
H-Index - 5
eISSN - 2217-7183
pISSN - 1451-4869
DOI - 10.2298/sjee2201057f
Subject(s) - conductor , current density , protein filament , current (fluid) , layer (electronics) , electrical conductor , geometry , distribution (mathematics) , mechanics , materials science , mathematics , condensed matter physics , mathematical analysis , physics , electrical engineering , composite material , engineering , quantum mechanics
In this paper, we determine in a closed form the current distribution in a thin two-layer tubular conductor with a sinusoidal current in the presence of a filament with an equal but opposite current. The method of treating the problem consists in solving an integral equation for the current density in one layer which enables to find the current density in the other layer by imposing equality of the tangential components of the electric fields at the layer interface. An important factor, the AC to DC resistance ratio for the conductor is also found in a closed form. Some numerical examples, for current distribution and resistance ratio, versus frequency or geometry parameters, are presented.