Contribution to the finite element analysis of eddy‐currents in multi‐conductor windings surrounded by magnetically non‐linear media

• Áron Szucs ^[1] ; Antero Arkkio ^[1] ; Tapani Jokinen ^[1]
  1. [1] Helsinki University of Technology, Finlandia
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 18, Nº 4, 1999, págs. 668-674
• Idioma: inglés
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• Resumen

  • In the finite element analysis of electrical machines the multi‐conductor winding in a stator slot is usually modeled simply by a single conductor with constant current density. The size of a finite element problem due to the precise modeling of eddy currents in the multi‐conductor windings can be much larger compared to the single conductor model. The paper investigates a new FEM approach for the consideration of eddy‐currents in multi‐conductor windings surrounded by nonlinear media, a case typical in electrical machinery. The method, called elimination of inner nodes, is evaluated in the paper as a possible solution for multi conductor eddy current problems. The paper presents examples and concludes in what circumstances the method of elimination is efficient.