Affiliations: Federal University of Pará, University Campus Belém, Belém-Pará, Brazil
Correspondence:
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Corresponding author: Wellington da S. Fonseca, Federal University of Pará - UFPA, University Campus Belém, Belém, Pará 66075-110, Brazil. Tel.: +55 91 3231 8372; Fax: +55 91 3231 9287; E-mail:fonseca@ufpa.br
Abstract: The main objective of this paper is to assist in the
investigation of electromagnetic forces, structural deformation, stresses,
and Safety factor when energizing unloaded transformers. The methodology is
based on modeling of a single-phase 50 MVA transformer subjected to inrush
currents through finite element method (FEM). In this perspective, the
conditions of inrush currents are used to estimate the magnetic field
density dispersion in the transformer and to find the values of forces in
axial and radial directions. These components are distributed along the
energized windings for observing the loads in high-voltage windings. Thus,
this article will contributes with the investigations of a structural
Analysis on transformers when subjected to inrush current.
