高周波変圧器用ラップ接合アモルファス巻鉄心の鉄損算定

• 栗田 直幸

  (株) 日立製作所 研究開発グループ

• 畠山 智行

  (株) 日立製作所 研究開発グループ

• 木村 守

  (株) 日立製作所 研究開発グループ

書誌事項

タイトル別名

• Iron loss estimation of amorphous wound core with lap-joint for high-frequency transformers

抄録

  To investigate loss-reduction schemes for the lap-joint amorphous wound core of the high-frequency transformer (HFT) of the isolated DC-DC converter used in the HVDC grid system, we tested the frequency, f performance of iron loss, P_i, of two types of amorphous HFTs up to 6 kHz. Their cores had the same specifications except for the mean magnetic path length. From the P_i-difference between them, the loss density in the laminated part of the amorphous foils, W_u, and the net loss induced by the crossing flux at the lap-joint part, P_L, could be estimated separately. By parameter-fitting with the iron loss equation, it was revealed that W_u had an eddy-current loss coefficient that was close to that of the previously studied results for as-cast amorphous foils, and P_L increased in proportion to square of f. We also discuss the impact of the lap-joint structure on the total loss of HFT in an electromagnetic analysis.

収録刊行物

• 日本磁気学会論文特集号

  日本磁気学会論文特集号 2 (1), 20-24, 2018-05-01

  公益社団法人 日本磁気学会

キーワード

• offshore wind farm
• DC collection
• over-lapped structure
• in-plane eddy current
• unloaded loss

詳細情報

• CRID: 1390001205826218624
• NII論文ID: 130006731077
• DOI: 10.20819/msjtmsj.18tr205
• ISSN: 24320471
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可