三相変圧器鉄心の三次元振動解析

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2015/07/01

タイトル(英語): 3D Vibration Analysis on Three Phase Transformer Cores

著者名: 大村　健（JFEスチール（株） スチール研究所 倉敷地区），山口　広（JFEスチール（株） スチール研究所 千葉地区），石垣　雄亮（JFEスチール（株） スチール研究所 京浜地区），岡部　誠司（JFEスチール（株） スチール研究所 倉敷地区），戸田　広朗（JFEスチール（株） スチール研究所 倉敷地区）

著者名(英語): Takeshi Omura (Steel Research Lab., Kurashiki Area, JFE Steel Corporation), Hiroi Yamaguchi (Steel Research Lab., Chiba Area, JFE Steel Corporation), Yusuke Ishigaki (Steel Research Lab., Keihin Area, JFE Steel Corporation), Seiji Okabe (Steel Research Lab., Kurashiki Area, JFE Steel Corporation), Hiroaki Toda (Steel Research Lab., Kurashiki Area, JFE Steel Corporation)

キーワード: 方向性電磁鋼板，三相変圧器，磁歪，鉄心，振動，騒音　　grain-oriented electrical steel sheets，three phase transformer，magnetostriction，iron core，vibration，acoustic noise

要約(英語): The 3D vibration and 3D magnetostriction of a model transformer core made up of grain-oriented electrical steel sheets were studied by using laser Doppler vibrometry, an accelerometer and strain gauges. The following results were obtained. The magnetostriction of the transformer core at the T-joint and the corner area including the joint part displayed several times larger amplitude than that of a single sheet under sinusoidal excitation. The out-of-plane vibration of the transformer core showed a much larger amplitude than the in-plane vibration. It is considered that the out-of-plane vibration was the main cause of acoustic noise. The amplitude of in-plane vibration of the core can be explained for the magnetostriction amplitude in the in-plane direction. On the other hand, the out-of-plane vibration was tens of times larger than the vibration calculated from the magnetostriction amplitude in the out-of-plane direction. Furthermore, the same result, that out-of-plane vibration is larger than in-plane vibration, was also obtained by measuring a practical transformer core, and the frequency spectrum of acoustic noise presented a similar frequency spectrum to that of out-of-plane vibration.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.135 No.7 （2015） 特集：電気機器の低損失・高効率化に向けた電力用磁性材料の評価活用技術

本誌掲載ページ: 414-423 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/ieejfms/135/7/135_414/_article/-char/ja/