架橋度の異なる2層シリコーンゲル中における電気トリー現象とその絶縁耐力

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: 2023/04/01

タイトル(英語): Electrical Treeing Phenomena in Two-Layer Silicone Gel with Different Crosslinking Degrees and its Dielectric Strength

著者名: 黒田　理紗（愛媛大学），全　現九（愛媛大学），井堀　春生（愛媛大学）

著者名(英語): Risa Kuroda (Ehime University), Hyeon-Gu Jeon (Ehime University), Haruo Ihori (Ehime University)

キーワード: 電気トリー，シリコーンゲル，絶縁耐力，傾斜材料　　electrical treeing，silicone gel，dielectric strength，gradient material

要約(英語): Silicone gel is widely used to encapsulate power modules, and improvement of its dielectric strength has been required. So, the purpose of our research is to improve dielectric strength of silicone gel encapsulant, and we focus on crosslinking degree of silicone gel. Previous studies have shown that growth mechanism of electrical tree changes with crosslinking degree of silicone gel. This suggests the possibility that the presence of the interface by different crosslinking degrees inhibits the tree growth. In this paper, we have investigated the tree growth and breakdown characteristics in silicone gel - crosslinking degrees graded layer materials. The interfaces in our study are arrange as being vertical to the line of electric force. Consequently, it was clarified that barrier effect of interface by different crosslinking degrees and the relaxation of electric field in low crosslinking degree region retards on tree growth, which improves the dielectric strength.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.143 No.4 （2023） 特集：2022年基礎・材料・共通部門大会

本誌掲載ページ: 166-172 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/143/4/143_166/_article/-char/ja/