Fixed‐point technique in computing nonlinear eddy current problems

• Wieslaw Peterson ^[1]
  1. [1] Department of Electrical Engineering, Technical University of Bialystok, Polonia
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 22, Nº 2, 2003, págs. 231-252
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • Eddy currents are investigated in a ferromagnetic bar exposed to a transverse magnetic field. Such an open boundary field problem is analysed applying the Galerkin finite element method coupled with a separation of variables. A steady state is considered, introducing time periodic conditions. The resultant system of nonlinear equations is solved using an iterative procedure based on Brouwer's fixed‐point theorem referred to the nonlinear material reluctivity. Numerical results are presented for a massive conductor made of cast steel and cast iron. The eddy‐current distribution and characteristics of power losses are illustrated in a graphic form.