Izvorni znanstveni članak

https://doi.org/10.31534/engmod.2018.1-2.si.02_bdny

Computation of Carson formulas using piecewise approximation of kernel function

Ivan Krolo orcid.org/0000-0002-9342-304X ; Department of Electric Power Engineering, University of Split, Split, CROATIA
Slavko Vujević orcid.org/0000-0002-1898-1746 ; Department of Electric Power Engineering, University of Split, Split, CROATIA
Tonći Modrić orcid.org/0000-0002-1411-1591 ; Department of Electric Power Engineering, University of Split, Split, CROATIA

Sažetak

Novel approach for the high-accurate computation of Carson formulas is presented. Carson formulas are used for computation of per-unit length (pul) self and mutual impedances of infinitely long parallel conductors. Numerical algorithm described in this paper uses a piecewise approximation of the kernel function which appears in the Carson formula corrections. Approximated kernel function is multiplied by the rest of the integrands in the impedance correction expressions and analytically integrated. By using the proposed algorithm, highaccurate results with the desired computed n-digit accuracy can easily be obtained. Results computed by the proposed algorithm are compared with the two most commonly used approximation methods for large frequency range.

Ključne riječi

Carson formulas; mutual impedance; numerical algorithm; piecewise approximation; self-impedance

Hrčak ID:

206312

URI

https://hrcak.srce.hr/206312

Datum izdavanja:

7.9.2018.

Posjeta: 1.841 *