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

Wang, Tianchi; Huang, Tao; Wang, Haiyang; Li, Junna; Chen, Wei; Du, Yingchao

doi:10.1109/tps.2021.3127946

Cited by 5 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shielding effect of the trigger plane will weaken the electric field near the hole. On the one hand, trigger electrodes are protected from the erosion caused by the main gap discharge current [23]. On the other hand, charged particles in the trigger gap arcing channel cannot drift out [21].…”

Section: Switch Gap Configurationsmentioning

confidence: 99%

See 1 more Smart Citation

Comparative study of pulsed breakdown processes and mechanisms in self-triggered four-electrode pre-ionized switches

Wang¹,

Sun²,

Yang³

et al. 2022

Plasma Sci. Technol.

Self Cite

View full text Add to dashboard Cite

This work investigates the pulsed breakdown processes and mechanisms of self-triggered pre-ionized switches with a four-electrode structure in nitrogen through ICCD (Intensified Charge Coupled Device) photographs. The diameter of the trigger plane hole mainly determines the switch’s electric field distribution. Two configurations with minimum and maximum trigger plane holes are adopted for comparison. In the switch with a minimum trigger plane hole, the maximum electric field distributes at the surfaces of the main electrodes. Though charged particles in the triggering spark channel cannot drift out, homogeneous discharges can be stimulated from both the cathode and anode surfaces through UV (ultraviolet) illumination. Two sub-gaps are likely to break down simultaneously. In the switch with a maximum trigger plane hole, the maximum electric field locates near the trigger electrodes. Discharges in both sub-gaps initiate from the trigger electrodes in the form of a positive or negative streamer. Due to lower breakdown voltage and electric field threshold for discharge initiation, the cathode side sub-gap breaks down first. The analysis of two extreme examples can be referenced in the future design and improvement of self-triggered four-electrode switches with different structures of trigger electrodes.

show abstract

Section: Switch Gap Configurationsmentioning

confidence: 99%

“…The trigger gap will share a large portion (>50%) of the switch voltage and break down at the very beginning under a pulsed voltage with a rise time of about 100 ns. Therefore, a jitter-free continuous pre-ionization driven by the switch leak current through R Cc , R aA and the trigger gap is generated [23].…”

Section: Switch Gap Configurationsmentioning

confidence: 99%

Comparative study of pulsed breakdown processes and mechanisms in self-triggered four-electrode pre-ionized switches

Wang¹,

Sun²,

Yang³

et al. 2022

Plasma Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

Time delay statistics modeling of megavolt self-triggered pre-ionized switch under nanosecond pulses

Wang,

Chen,

2024

Physics of Plasmas

View full text Add to dashboard Cite

This paper establishes and validates a semi-quantitative calculation model for the breakdown time delay and jitter of a megavolt self-triggered pre-ionized switch under nanosecond pulses. The calculated error for the time delay ranges from 0.6% to 12.6%, and the observed variation trend in jitter is deemed reliable. The influence mechanisms of the breakdown time delay and jitter, as predicted by the model, align with experimental results. Notably, a jitter offset effect is identified in the pulsed breakdown process due to the time-varying electric field. The study predicts and confirms that the optimal breakdown time for the trigger gap under pulsed pre-ionization mode is ∼70% of the peak time of the input pulse and the gradient resistor should not exceed 4 kΩ under continuous pre-ionization mode to maintain the intensity of the switch leak current. This model is an extension of the Donaldson model, including the pre-ionization source with an inherent jitter and the formative time delay under nanosecond pulses. This framework may serve as a reference for analyzing time jitter statistics of other megavolt pulsed gas switches.

show abstract

Probability Calculation Model for 1 + n-Type Multistage Gas Spark Switch With High Reliability and Compactness

Shang

Gao

et al. 2023

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

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

Cited by 5 publications

References 9 publications

Comparative study of pulsed breakdown processes and mechanisms in self-triggered four-electrode pre-ionized switches

Comparative study of pulsed breakdown processes and mechanisms in self-triggered four-electrode pre-ionized switches

Time delay statistics modeling of megavolt self-triggered pre-ionized switch under nanosecond pulses

Probability Calculation Model for 1 + n-Type Multistage Gas Spark Switch With High Reliability and Compactness

Contact Info

Product

Resources

About