Analytical modelling of the transient thermal field of a tubular bus in nominal rating

Jerzy Gołębiowski , Marek Zaręba

Abstract

Purpose The purpose of this paper is to analyse the dynamics of a thermal field generated in a tubular bus with rated current by using two models of electrical resistivity of copper. Design/methodology/approach The boundary-initial problem of the modified heat equation was formulated for the tubular bus. Analytical solutions were obtained by means of Green’s functions as the kernels of the integral operator inverse to the corresponding differential operator. The results were presented graphically and verified using the finite element method. The calculations were made by considering the example of the Storm Power Components tubular bus (USA). Findings Analytical field models were used to determine time- and space-variable heating curves, time constants and steady-state current ratings. Research limitations/implications This paper is related to the structure of a hollow cylinder. Other bus sections can be taken into account by using the coordinate systems of different curvilinear orthogonal symmetry. Originality/value Using the analytical method, the influence of the variable (temperature dependent) electrical resistivity on some important parameters and characteristics of the tubular bus was investigated. The system was considered as an element with distributed parameters.
Autor Jerzy Gołębiowski (WE/KEEE)
Jerzy Gołębiowski
- Katedra Elektrotechniki Teoretycznej i Metrologii
, Marek Zaręba (WE/KEEE)
Marek Zaręba
- Katedra Elektrotechniki Teoretycznej i Metrologii
Tytuł czasopisma/seriiCompel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, ISSN 0332-1649, (N/A 40 pkt)
Rok wydania2019
Tom38
Nr2
Paginacja642-656
Objętość publikacji w arkuszach wydawniczych0,70
Klasyfikacja ASJC Computational Theory and Mathematics1703; Computer Science Applications1706; Electrical and Electronic Engineering2208; Applied Mathematics2604
DOIDOI:10.1108/COMPEL-02-2018-0078
Identyfikator wewnętrzny000045465
Języken angielski
Punktacja (całkowita)40
Żródło punktacjijournalList
PunktacjaPunktacja MNiSW = 40.0, 13-03-2020, ArticleFromJournal
Wskaźniki publikacji Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0,731; Impact Factor WoS: 2018 = 0,705 (2) - 2018=0.685 (5)
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