New approach to calculate core losses in power transformers based on combination of FEM simulation and post processing algorithm

In the past there have been several approaches to build a model of power transformers. Nevertheless, it is difficult to estimate the behavior of power transformers regarding losses especially core losses. Core losses are mainly responsible for no-load losses in power transformers which should be investigated concerning COMMISSION REGULATION (EU) No 548/2014 with regards to small, medium and large power transformers. Hence, a FEM (finite element method) model and simulation of a single phase power transformer combined with a post processing algorithm to calculate its power consumption without load is proposed. The transformer is an air cooled core type setup. Based on construction plans provided by the manufacturer of the power transformer a realistic model is realized. In a first step a 2D…