Simple fully analytical copper loss model of litz wire made of strands twisted in multiple levels

Kazuhiro Umetani, Jesus Acero, Hector Sarnago, Oscar Lucia, Eiji Hiraki

研究成果: Conference contribution

9 被引用数 (Scopus)

抄録

The Litz wire has been widely utilized as a wire with a low copper loss under high-frequency operation. However, design optimization of the Litz wire is difficult because this wire generally has a complicated structure of thin strands twisted in multiple levels, which hinders both of the analytical and numerical prediction of the copper loss. To overcome this issue, recent studies have proposed the analytical models of the copper loss in the bundle of twisted strands, which is the basic components constituting the Litz wire. This paper constructs a simple analytical copper loss model of the Litz wire based on these preceding insights. In addition to these insights, the proposed model further considers the effect of the inclination angle of the strands to the Litz wire on the proximity effect loss. The proposed model was tested in comparison with the experimentally measured AC resistance of commercially available Litz wires. As a result, the predicted AC resistance showed good agreement with the measured ac resistance, suggesting the effectiveness of the proposed model.

本文言語English
ホスト出版物のタイトル34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1257-1264
ページ数8
ISBN(電子版)9781538683309
DOI
出版ステータスPublished - 2019 5月 24
外部発表はい
イベント34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
継続期間: 2019 3月 172019 3月 21

出版物シリーズ

名前Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
国/地域United States
CityAnaheim
Period19/3/1719/3/21

ASJC Scopus subject areas

  • 電子工学および電気工学

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