Simulation of heat distribution in electric contacts of a hybrid DC switch

カテゴリ: 部門大会

論文No: 51

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): Simulation of heat distribution in electric contacts of a hybrid DC switch

著者名: Chomrong Ou(東京工業大学),Yinming Huang(東京工業大学),Koichi Yasuoka(東京工業大学)

著者名(英語): Ou Chomrong|Huang Yinming|Yasuoka Koichi

キーワード: シミュレーション|熱配布|電極接点|ハイブリッド直流スイッチ,Simulation,Heat distribution,Electric contacts,Hybrid DC switch

要約(日本語): A hybrid DC switch is a potential DC current interrupting device. Unlike conventional switches such as a mechanical switch and a semiconductor switch, the hybrid DC switch has a low-contact resistance and interrupt DC current rapidly. A copper based Tungsten (Cu-W) contact pair that have 1 mm-thickness of Tungsten material on the top of copper contacts can interrupt DC current up to 400 A without arc discharge after contact opening. However, a tungsten (W) and copper (Cu) contact pairs only interrupt DC current up 300 A and 120 A, respectively. This work compares physical phenomena of Cu, W and Cu-W contacts on heat distribution, electric potential and current during contact opening. The information of the comparison is used to explain how Cu-W contacts can interruption DC current higher than W and Cu contacts in case of without arc discharge.

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