An investigation into a slight-variation of the transformer effective permeability in LLC resonant converter

Mostafa Noah, Shun Endo, Shota Kimura, Masayoshi Yamamoto, Jun Imaoka, Kazuhiro Umetani, Eiji Hiraki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 引用 (Scopus)

抜粋

In the LLC resonant converter,the transformer core is usually gapped to realize the designed value of magnetizing inductance that allows for soft switching. The air gap length which is in a scale of millimeters may be affected by the humidity and long working hours of the ferrite material, resulting into a variation of the core permeability. Moreover, a slight variation of the transformer core permeability may be encountered with any possible change in the core temperature. In a proper transformer design, the transformer shall operate with an optimum value of effective permeability where the sum of both copper and core losses is minimal. In this paper, the transformer optimal design is presented. Moreover, the influence of the permeability on the transformer's copper and core losses is revealed. Furthermore, with the help of newly derived equations, the effect of the transformer's effective permeability on the LLC converter conduction turn-on and turn-off losses is reported. Along with the theoretical discussion,the analysis is supported with simulation and experimental results utilizing a 250W 200kHz prototype.

元の言語英語
ホスト出版物のタイトル2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe
出版者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9789075815276
DOI
出版物ステータス出版済み - 11 6 2017
イベント19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe - Warsaw, ポーランド
継続期間: 9 11 20179 14 2017

出版物シリーズ

名前2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe
2017-January

その他

その他19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe
ポーランド
Warsaw
期間9/11/179/14/17

All Science Journal Classification (ASJC) codes

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

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  • これを引用

    Noah, M., Endo, S., Kimura, S., Yamamoto, M., Imaoka, J., Umetani, K., & Hiraki, E. (2017). An investigation into a slight-variation of the transformer effective permeability in LLC resonant converter. : 2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe [8099301] (2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe; 巻数 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/EPE17ECCEEurope.2017.8099301