Application of extremum co-energy principle for homogenizing current distribution in parallel-connected windings in transformers: Design optimization of winding turn allocation among winding layers

Tomohide Shirakawa, Kazuhiro Umetani, Eiji Hiraki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Parallel-connected windings are widely utilized for power transformers to reduce the copper loss. However, this reduction effect is often hindered by the proximity effect, which causes concentrated current distribution in parallel-connected windings. This paper addresses this issue by proposing a design optimization method of winding turn allocation among winding layers. This optimization method is based on the recently proposed insight on the proximity effect, referred to as the extremum co-energy principle. Experiment on a planar transformer with four primary winding layers was carried out to verify the proposed method. As a result, the proposed method successfully optimized the allocation of the winding turns to minimize the AC resistance.

Original languageEnglish
Title of host publication2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe
PublisherInstitute of Electrical and Electronics Engineers Inc.
PagesP1-P10
Volume2017-January
ISBN (Electronic)9789075815276
DOIs
Publication statusPublished - Nov 6 2017
Event19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe - Warsaw, Poland
Duration: Sep 11 2017Sep 14 2017

Other

Other19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe
CountryPoland
CityWarsaw
Period9/11/179/14/17

Keywords

  • Design
  • Ohmic losses
  • Passive component
  • Transformer

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

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    Shirakawa, T., Umetani, K., & Hiraki, E. (2017). Application of extremum co-energy principle for homogenizing current distribution in parallel-connected windings in transformers: Design optimization of winding turn allocation among winding layers. In 2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe (Vol. 2017-January, pp. P1-P10). [8099115] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/EPE17ECCEEurope.2017.8099115