Performance parameters of power transformers using 3D magnetic field calculations

Abstract

Today's challenges in the design of power transformers necessitate, among other things, very accurate calculation of the performance parameters of the transformer (such as losses, impedance, shielding, s.c. forces, etc.), reduction of load losses, and preventing overheating and local hot spots. Presented in this paper are theoretical and experimental studies conducted to precisely assess the need and projected benefits of these calculations based on the 3D determination of the leakage field of the transformer. Also presented are results of the already achieved objectives in winding loss calculation and magnetic shielding design. Copyright © 1984 by The Institute of Electrical and Electronics Engineers, Inc.