Comparison of Power Loss and Magnetic Flux Distribution in Octagonal Wound Transformer Core Configurations

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Çınar M. A., Alboyacı B., Şengül M.

JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY, vol.9, no.4, pp.1290-1295, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 4
  • Publication Date: 2014
  • Doi Number: 10.5370/jeet.2014.9.4.1290
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1290-1295
  • Keywords: Transformer, Octagonal wound core, Joint gap, Flux distribution, Core loss, STEP-LAP JOINTS, ELECTRICAL MACHINES, PERFORMANCE
  • Kocaeli University Affiliated: Yes


In this paper, various configurations of octagonal wound transformer core topology, which has previously proved advantages on conventional wound cores, are studied. Each configuration has different joint types and different placement of joint zones on the core. Magnetic flux distributions and power losses of each configuration are analyzed and compared. Comparisons are based on both 2D&3D finite element simulations and experimental studies. The results show that, joint types and their placements on the core cause local flux accumulations and dramatically affect power loss of the core.