Development of high-speed interruption technology for DC arc by polymer ablation and aerosol particle mixing using water-absorbing polymer ablation

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K18717
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 21:Electrical and electronic engineering and related fields
• Research Institution: Kanazawa University
• Principal Investigator: Tanaka Yasunori 金沢大学, 電子情報通信学系, 教授 (90303263)
• Co-Investigator(Kenkyū-buntansha): 石島 達夫 金沢大学, 電子情報通信学系, 教授 (00324450) ; 中野 裕介 金沢大学, 電子情報通信学系, 助教 (60840668)
• Project Period (FY): 2021-07-09 – 2023-03-31
• Keywords: 熱プラズマ / アーク / 遮断器 / ポリマーアブレーション / 消弧

Outline of Final Research Achievements

In this study, in order to develop an innovative high-current interrupting method, we propose a new high-speed interrupting technology for DC arcs by aerosol particle mixing that utilizes polymer and water-absorbing polymer ablation. A pressing issue in the introduction of DC power supply is the development of technology for reliably interrupting large DC currents in the event of an accident. In this study, we are trying to apply polymer ablation, which is ablated when an arc contacts a polymer, to arc attenuation, and to apply an aerosol mixture system in which nano- and micro-sized polymer particles are mixed to high-current arc interruption. A numerical analysis model for the induced thermal plasma was constructed together with a basic experimental device for polymer irradiation experiments.

Free Research Field

熱プラズマ工学

Academic Significance and Societal Importance of the Research Achievements

ポリマーアブレーションおよびナノ・マイクロポリマのエアロゾル混合系とアークとの相互作用の検討例はほとんどなく未知である。溶発による吸熱作用とポリマ材料混入によるアークの熱力学輸送特性の変化や圧力上昇，乱流ガス流発生による急速混合効果も期待できる。既存のDusty plasmaとエアロゾルの合成領域であり，学術的に非常に興味深い未踏域である。さらにここにアーク遮断に有効なH2Oを大量に吸水する新しいポリマPAAゲル利用を提案し，そこからのマイクロ粒子の放出を利用し，アークプラズマの減衰効果を一気に高める革新的な構想である。