Steady-state multiphysics analysis of stator bar using finite element method

Article type: Research Article

Authors: Borges, José William Ribeiro^a | Fonseca, Wellington da Silva^a; | Brasil, Fernando de Souza^b | Araújo, Ramon C.F.^a

Affiliations: [a] Federal University of Pará, Belém, Brazil | [b] Eletrobras Eletronorte, Belém, Pará, Brazil

Correspondence: [*] Corresponding author: Wellington da Silva Fonseca, Federal University of Pará, Belém, Brazil. E-mail: fonseca@ufpa.br

Abstract: The electrical insulation is one of the main sources of failures in hydro-generators, therefore it is important to research the insulation system of stator bars. In this paper, it is developed a steady-state multiphysics analysis of a stator bar using the Finite Element Method to assess its steady-state behavior in the electrical, magnetic and thermal domains. Different aspects are analyzed in simulations, such as capacitance, mechanical stress and thermal effects. Numerical results are compared with experimental measurements for validation.

Keywords: Stator bar, finite element method, multiphysics analysis, hydro-generator

DOI: 10.3233/JAE-200012

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 65, no. 3, pp. 513-526, 2021