Back to Search Start Over

Experimental Investigation on the Breakdown Voltage Jitter of Corona-Stabilized Switch at Low Repetition Rate.

Authors :
Gao, Pengcheng
Zeng, Bo
Cheng, Jie
Su, Jiancang
Li, Rui
Zhao, Liang
Source :
IEEE Transactions on Plasma Science; Aug2017 Part 3, Vol. 45 Issue 8, Part 3, p2351-2357, 7p
Publication Year :
2017

Abstract

Studies have been taken into the breakdown voltage jitter of corona-stabilized switch at high repetition rate up to several kHz. It is thought that the gas recovery affect the jitter of breakdown voltage directly at high repetition rate, because the gas switch will breakdown at a low voltage if the gas cannot fully recover. The breakdown voltage jitter is called voltage jitter in the following paper. However, based on the experimental results, the voltage jitter still exists at low repetition rate, even at single-shot mode. This is not explained by the previous studies. In this paper, voltage jitter below 100 Hz of a corona-stabilized switch is investigated experimentally. A corona-stabilized switch is introduced, using a cylindrical electrode as the cathode and a plane electrode as the anode. The gas used between the electrodes is SF6. A negative pulse with a maximum width of 30~\mu \texts is used to charge this switch. The tested factors include gas pressure, gap space, repetition rate, and switch geometry. Experimental results show that voltage jitter is mainly affected by the gas pressure and switch geometry. It is seen that voltage jitter decreases as gas pressure increases and a suitable cathode geometry presents a low voltage jitter. Critical volume is a region close to the highly stressed electrode, where the presence of an electron will lead to an electron avalanche which attains a critical size and hence leads to a stabilizing corona. Critical volume is introduced to explain the experimental results. It is found that less voltage jitter can be achieved with a smaller and more concentrated critical volume, as well as efficient corona stabilization. The results indicate that voltage jitter may be reduced by optimize the critical volume at low repetition rate. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
00933813
Volume :
45
Issue :
8, Part 3
Database :
Complementary Index
Journal :
IEEE Transactions on Plasma Science
Publication Type :
Academic Journal
Accession number :
125754888
Full Text :
https://doi.org/10.1109/TPS.2017.2725985