Original scientific paper

A hybrid algorithm for computation of rectangular conductor internal impedance

Vedran Boras ; University of Split, Faculty of Natural Sciences and Mathematics, Department for Polytechnic, Teslina 12, 21 000 Split, Croatia
Slavko Vujević orcid.org/0000-0002-1898-1746 ; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Ruđera Boškovića 32, 21 000 Split, Croatia
Dino Lovrić ; University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Ruđera Boškovića 32, 21 000 Split, Croatia

Abstract

A hybrid algorithm for the computation of rectangular conductor per unit length internal impedance is developed. Up to a switching frequency, the internal impedance is computed using a two-dimensional analytical formula developed by Giacoletto. For these frequencies, 150 terms of Giacoletto infinite sum give a sufficiently good approximation. For higher frequencies, it is shown that the rectangular conductor can be quite accurately approximated by a cylindrical conductor. The proposed hybrid algorithm, for higher frequencies, features improved accuracy and speed when compared to the Giacoletto formula truncated after a small number of terms.

Keywords

cylindrical conductor; exponential approximation; internal impedance; rectangular conductor

Hrčak ID:

83909

URI

https://hrcak.srce.hr/83909

Publication date:

29.6.2012.

Article data in other languages: croatian

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