Pulsed vacuum flashover of Al2O3/epoxy nanocomposite

Author

Yu, Chen ; Yonghong, Cheng ; Jiabin, Zhou ; Zengbin, Wang ; Kai, Wu ; Tanaka, Toshikatsu

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an

fYear

2008

fDate

7-11 Sept. 2008

Firstpage

36

Lastpage

39

Abstract

Research on vacuum surface flashover mechanisms of insulating material under nanosecond pulses is important for the design and manufacture of high power pulse generators. This paper studies the vacuum surface flashover characteristic of Al₂O₃/epoxy nanocomposite filled with different weight proportion of nano-filler. By using a unipolar pulse generator (20 ns rise time and 800 ns full width at half maximum), the flashover characteristic of Al₂O₃/epoxy nanocomposite is investigated. In addition, the thermally stimulated depolarization current (TSDC) is measured. The experimental results can be explained in terms of the different effects of shallow and deep traps.

Keywords

alumina; aluminium compounds; epoxy insulation; flashover; nanocomposites; pulse generators; pulsed power technology; surface discharges; thermally stimulated currents; Al₂O₃; epoxy nanocomposite; high power pulse generators; insulating material; nano-filler; nanosecond pulses; pulsed vacuum flashover; surface flashover; thermally stimulated depolarization current; Aluminum oxide; Coatings; Dielectrics and electrical insulation; Flashover; Gas insulation; Polymers; Protons; Pulse generation; Surface morphology; Vacuum systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on

Conference_Location

Mie

Print_ISBN

978-4-88686-005-7

Electronic_ISBN

978-4-88686-006-4

Type

conf

DOI

10.1109/ISEIM.2008.4664437

Filename

4664437