Development of Low Resistance Tungsten-clad Copper Contacts in an Arc-free Hybrid DC Circuit Breaker

カテゴリ: 部門大会

論文No: 52

グループ名: 【B】令和元年電気学会電力・エネルギー部門大会

発行日: 2019/08/23

タイトル(英語): Development of Low Resistance Tungsten-clad Copper Contacts in an Arc-free Hybrid DC Circuit Breaker

著者名: Xinhao Tian(東京工業大学),Mo Chen(東京工業大学),安岡 康一(東京工業大学)

著者名(英語): Xinhao Tian|Mo Chen|Koichi Yasuoka

キーワード: タングステンクラッド銅接点|低抵抗|ハイブリッド直流遮断器|接点状態,tungsten-clad copper contact,low resistance,hybrid dc circuit breaker,contact conditions

要約(日本語): Compared to the copper contact, the tungsten-clad copper contact can afford a higher current limit for arc-free interruption. However, the contact resistance of W-clad Cu contact is large so it is necessary to reduce it. We focus on the contact conditions, and expect to decrease contact resistance by optimizing these conditions, such as roughness, contact force and so on. Experimental results show that contact resistance drops with the decrease of roughness and the increase of contact force or conducted current, but this drop has a limitation. As a conclusion, we think that smoother surface and larger contact pressure contribute to a lower contact resistance.

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