天然黒鉛質ブラシ／鋼スリップリングのV-I特性における極端な飽和メカニズムの研究

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2020/02/01

タイトル(英語): Voltage Saturation Mechanism in V-I Characteristics for Natural Graphite Brush and Steel Slip-ring

著者名: 天田　友樹（日本工業大学），上野　貴博（日本工業大学），澤　孝一郎（日本工業大学），森田　登（電動機・ブラシ技術研究所），高橋　和彦（三菱日立パワーシステムズ（株））

著者名(英語): Yuki Amada (Nippon Institute of Technology), Takahiro Ueno (Nippon Institute of Technology), Koichiro Sawa (Nippon Institute of Technology), Noboru Morita (MOTOR & carbonBRUSH Lab. Co. Ltd.), Kazuhiko Takahashi (MITSUBISHI HITACHI POWER SYSTEMS, LTD.)

キーワード: 摺動接点，天然黒鉛質ブラシ，鋼リング，V-I特性，高速大容量同期発電機　　sliding contact，natural graphite brush，steel ring，V-I characteristic，high-speed large power generator

要約(英語): Sliding contact systems are widely applied to power transfer between stationary and moving devices. Natural graphite brush is indispensable for a sliding contact at a high peripheral speed exceeding 50m/s. In addition, steel is applied to slip-rings to ensure mechanical strength. However, the electric contact behavior at high-speed sliding has not yet been sufficiently clarified for steel. In this paper, as a result of our experiments for the electric contact behavior, heavily saturated V-I characteristics have been found. For the heavily saturated characteristics' the reasons for the specific saturation have been analyzed based on the estimation of the true contact point temperature and voltage drop. In conclusion, the saturation of the V-I characteristics is caused by the state transition at the contact point of the steel slip-ring from elastic to plastic, where the tensile strength of steel decreases at the contact point interface. This is also verified from the experimental values and the analysis of the contact point temperature.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.140 No.2 （2020）

本誌掲載ページ: 117-127 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/ieejias/140/2/140_117/_article/-char/ja/