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Unification of anisotropy and FEM-BE models for distribution transformer optimization

THEMISTOKLIS KEFALAS1,* , MARINA TSILI1, ANTONIOS KLADAS1

Affiliation

  1. Laboratory of Electrical Machines, Electric Power Division, Faculty of Electrical and Computer Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Athens 15780, Greec

Abstract

The paper presents a three-dimensional finite element (3D FEM) anisotropy model, based on a particular scalar potential formulation, for the no load loss evaluation of wound core shell type distribution transformers. The specific 3D FEM anisotropy model is combined with a hybrid finite element-boundary element (FEM-BE) model, used for the calculation of the transformer’s short circuit impedance, and various optimization algorithms in order to minimize the total owing cost (TOC) of a distribution transformer..

Keywords

Transformer, Finite element anisotropy model, Hybrid FEM-BE model.

Submitted at: March 13, 2008
Accepted at: May 14, 2008

Citation

THEMISTOKLIS KEFALAS, MARINA TSILI, ANTONIOS KLADAS, Unification of anisotropy and FEM-BE models for distribution transformer optimization, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 5, pp. 1143-1148 (2008)