Title :
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
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;
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
DOI :
10.1109/ISEIM.2008.4664437
