Application of Electric Vector Potential to Calculate Eddy Current Losses in Power Transformer Tanks

The present paper describes an implementation of the electric vector potential formulation for the eddy current problem using edge elements, and then presents an application of the developed computer code on an actual ABB transformer tank. The computed result corresponds quite closely with measured tank loss, and the qualitative result indicates that the code can be used to predict potential problem areas due to eddy currents in transformer tanks.