66kV級30MVA三相ハイブリッド鉄心変圧器の試作による損失低減効果の実証

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2020/04/01

タイトル(英語): Demonstration of Loss Reduction Effect of 66kV-Classed 30MVA Three Phase Hybrid-Core Transformer by Trial Manufacture

著者名: 小林　千絵（（株）日立製作所），栗田　直幸（（株）日立製作所），西水　亮（（株）日立製作所），山岸　明（（株）日立製作所），大原　伸也（（株）日立製作所），小木　瑞（（株）日立製作所），高橋　晃一（（株）日立製作所），田中　雄一郎（（株）日立製作所），桑原　正尚（（株）日立産機システム）

著者名(英語): Chie Kobayashi (Hitachi, Ltd.), Naoyuki Kurita (Hitachi, Ltd.), Akira Nishimizu (Hitachi, Ltd.), Akira Yamagishi (Hitachi, Ltd.), Shinya Ohara (Hitachi, Ltd.), Mizuki Ogi (Hitachi, Ltd.), Koichi Takahashi (Hitachi, Ltd.), Yuichiro Tanaka (Hitachi, Ltd.), Masanao Kuwabara (Hitachi Industrial Equipment Systems Co., Ltd.)

キーワード: アモルファス巻鉄心，珪素鋼板積鉄心，自重応力，鉄損，漂遊損，電力効率　　amorphous wound core，silicon steel stacked core，self-weight stress，iron loss，stray loss，power efficiency

要約(英語): To realize larger-capacity “Hybrid-core transformer: HBT”, this research has assembled a 30-MVA three-phase trial HBT and evaluated the loss performances. The hybrid-core consisting of the wound amorphous- and the stacked silicon steel-cores, is expected having advantages of lower iron loss of the iron-based amorphous material and the higher mechanical strength and saturation magnetic flux density of the silicon steels simultaneously. Three-dimensional finite-element method analysis revealed that the silicon steel core prevented over-saturation of the amorphous core. The hybrid configuration enabled the design to have an approximately 10% higher magnetic flux density than configurations with only an amorphous core. We then assembled a prototype 30-MVA three-phase HBT designed on the basis of our investigation results. Operation tests demonstrated that the HBT has 62%-reduced iron loss and 0.10%-higher 50%-loaded power efficiency from the conventional silicon steel core transformer.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.140 No.4 （2020） 特集：最近の電線・ケーブル技術

本誌掲載ページ: 323-330 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/140/4/140_323/_article/-char/ja/