Title :
High-Accurate Numerical Computation of Internal Impedance of Cylindrical Conductors for Complex Arguments of Arbitrary Magnitude
Author :
Vujevic, Slavko ; Lovric, Dino ; Boras, Vedran
Author_Institution :
Fac. of Electr. Eng., Mech. Eng. & Naval Archit., Univ. of Split, Split, Croatia
Abstract :
In this paper, a numerical model is proposed for computing the per-unit-length internal impedance of tubular cylindrical conductors for complex arguments of arbitrary magnitudes. The proposed model either numerically solves the exact formula for internal impedance consisting of modified Bessel functions or utilizes asymptotic approximations of modified Bessel functions when applicable. It is shown that the results obtained by the proposed model are highly accurate and numerically stable. The proposed model is also applicable for solid cylindrical conductors.
Keywords :
Bessel functions; conductors (electric); electric impedance; asymptotic approximations; complex argument; cylindrical conductor; internal impedance; modified Bessel functions; Approximation methods; Computational modeling; Conductors; Impedance; Mathematical model; Skin effect; Large complex arguments; modified Bessel functions; solid cylindrical conductor; tubular cylindrical conductor;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2014.2352398