インパルス電流が酸化亜鉛(ZnO)素子バリスタ電圧変化に及ぼす影響

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: 2015/06/01

タイトル(英語): Change of Varistor Voltage of Metal-oxide Varistor Influenced by Impulse Currents

著者名: 塚本　直之(音羽電機工業(株)),石井　勝(東京大学大学院工学系研究科先端電力エネルギー・環境技術教育研究センター)

著者名(英語): Naoyuki Tsukamoto (Otowa Electric Co., Ltd.), Masaru Ishii (APET, Graduate School of Engineering, The University of Tokyo)

キーワード: 酸化亜鉛素子,バリスタ,ZnO,サージ耐量,SPD,FDTD　　MOV,Varistor,ZnO,surge withstand capability,surge protective device,FDTD

要約(英語): It was reported so far that degradation of varistor voltage of metal-oxide varistors (MOVs) was observed when short-tailed impulse currents such as 4/10μs or 8/20μs impulses were applied, whereas after application of impulse currents having rather long duration such as 2ms rectangular current, degradation of varistor voltage was not observed. In this study, it is found that degradation of varistor voltage occurs after application of 10/350μs impulse current having longer duration than short-tailed impulses. The charge transfer value per unit cross section area is found to be related to degradation of varistor voltages, though its effect is dependent on impulse current waveforms. The behaviour of degradation of varistor voltage inside of MOV elements stressed by short-tailed impulse currents is partially explained by non-uniformity of current distribution in the elements, which is confirmed by numerical electromagnetic analysis.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.135 No.6 （2015）

本誌掲載ページ: 400-407 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/135/6/135_400/_article/-char/ja/