Improvement of Transformer Core Loss by Use of Low-Loss Electrical Steel

  • Zvonimir Valković


The results of an experimental investigation of the influence of high permeability grain-oriented (HGO) steel on transformer core loss are presented. The power losses of cores assembled with HGO material of grade M2H and with conventional grain-oriented material of grade M5 are compared. The aim of the investigation was to determine the influence of a number of parameters (e.g. single-phase and three-phase core forms, different corner and T-joint designs, core proportions, core dimensions, a number of laminations per stagger layer, overlap length) on the amount of loss reduction in the cores of HGO material.


Power Loss Core Loss Electrical Steel Core Dimension Loss Reduction 
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    A.J. Moses, Problems in the use of high permeability silicon iron transformer cores, J. Magn. Mat., vol. 19, No. 1–3, 1982.Google Scholar
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    Z. Valković, Influence of transformer core design on power losses, IEEE Trans. Magn., vol. MAG-18, No.2, 1982.Google Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • Zvonimir Valković
    • 1
  1. 1.Institut Rade KončarZagrebYugoslavia

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