Analysis of electromagnetic-mechanical stresses on the winding of a transformer under inrush currents conditions
| Autor: | Wellington da S. Fonseca, Diorge de Souza Lima, Newton Sure Soeiro, Marcus Vinícius Alves Nunes, Adry K. F. Lima |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
020209 energy 02 engineering and technology 01 natural sciences law.invention law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Transformer 010302 applied physics Safety factor business.industry Mechanical Engineering Electrical engineering Structural engineering Condensed Matter Physics Inrush current Finite element method Electronic Optical and Magnetic Materials Magnetic field Mechanics of Materials Electromagnetic coil Physics::Space Physics Structural deformation business Voltage |
| Zdroj: | International Journal of Applied Electromagnetics and Mechanics. 50:511-524 |
| ISSN: | 1875-8800 1383-5416 |
| DOI: | 10.3233/jae-150044 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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