Using Self-Triggered Sustaining Pre-Ionization to Obtain Nanosecond Jitter in a MV Pulsed Gas Switch

An efficient self-triggered sustaining pre-ionization method is implemented and verified in a four-electrode gas switch. Two stages of the trigger gap discharge-capacitance discharge determined by its charging voltage and sustaining arcing driven by switch leak current are analyzed and measured. The...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2021-12, Vol.49 (12), p.4034-4037
Main Authors: Wang, Tianchi, Huang, Tao, Wang, Haiyang, Li, Junna, Chen, Wei, Du, Yingchao
Format: Article
Language:English
Subjects:
Breakdown
Breakdown time delay
Capacitance
Delay effects
Discharge
Discharges (electric)
Electric breakdown
Electric potential
gas spark switch
Ionization
Jitter
nanosecond pulse
pre-ionization
Preionization
Switches
Time lag
Vibration
Voltage
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Summary:An efficient self-triggered sustaining pre-ionization method is implemented and verified in a four-electrode gas switch. Two stages of the trigger gap discharge-capacitance discharge determined by its charging voltage and sustaining arcing driven by switch leak current are analyzed and measured. The influence of trigger gap jitter on switch jitter is eliminated by invalidating the capacitance discharge stage and making only the sustaining arcing illumination work. The switch is operated under a peak voltage of 200-800 kV with a pulse rise time of around 100 ns. It can close stably near or after the peak time with a breakdown voltage jitter of less than 0.65%. A breakdown time delay jitter of less than 1 ns can also be obtained if only the peak leak current is higher than 20 A per 0.1 MPa.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2021.3127946