Loss Analysis of Transformer Core Using FEM Method Taking Account of Anisotropy

摘要

A new method to analyze the losses of core of power transformers is proposed. Epstein frame and specimens that are sheared at different angles to rolling direction to measure B-H curves and Wt-B curves of grain-oriented silicon steel sheets are used with this method to take account of anisotropy of the core. The computational results using both the conventional and proposed methods of the iron loss of a three-phase transformer are compared to validate the new proposal.