FE-Based Application for the Evaluation of Core-Losses in Distribution Transformers

This paper describes a finite-element (FE) based application for the numerical evaluation of core-losses in distribution transformer. The specific application is centered around a method that permits the generation of software applications for a variety of user/customer defined problems and makes use of the FE method in order to solve them. A variety of problems are considered such as electromagnetic or thermal, steady state or transient, linear or non-linear, and two-dimensional (2-D) or three-dimensional (3-D). The present manuscript focuses on one such application and more specifically on the problem of core-losses evaluation in oil-immersed, wound core, distribution transformers, both single-phase and three-phase. Finally, the core-losses of a single-phase wound core transformer are computed using the “CORELOSS” application and they are compared with results obtained with a commercial FE package.