Time Lag of Secondary ESD in Millimeter-Size Spark Gaps

Wan, Fang; Pilla, Viswa; Li, Jing; Pommerenke, David; Shumiya, Hideki; Araki, Kiyomichi

doi:10.1109/temc.2013.2275922

Cited by 19 publications

(6 citation statements)

References 21 publications

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“…The reduced statistical time lag in humid air relating to the point (iv) above had been known for a long time for metallic electrodes (e.g. [31,32]), and is also observed with dielectric-bounded gaps (e.g. [33]).…”

Section: Discussionmentioning

confidence: 71%

“…[33]). The detachment of electrons from the more abundant negative ions in humid air (also see appendix C) is a possible cause for the observed reduction of the statistical time lag [32]. If seed electrons are not provided at a sufficient rate (thus increasing the statistical time lag t s ), the PDIV will indeed be overestimated by t s • ∆U/∆t, where ∆U/∆t is the rate of rise of the electrode voltage.…”

Section: Discussionmentioning

confidence: 99%

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On the influence of humidity on the breakdown strength of air—with a case study on the PDIV of contacting enameled wire pairs

Färber,

Šefl,

Franck

2023

J. Phys. D: Appl. Phys.

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The partial discharge inception voltage (PDIV) in contacting enameled wire pairs exhibits a marked decrease with increased air humidity. While existing literature mentions several potential mechanisms for this reduction, a comprehensive quantitative assessment of the associated effects is lacking. This research paper addresses this knowledge gap by providing a quantitative estimation of the combined impact of water on the gas’s ionization yield (effective ionization coefficient) and the modification of the gap electric field caused by water absorption into the bulk of the insulating coating and the associated microscopic and macroscopic polarization processes (dielectric permittivity). However, a comparison of the theoretical predictions with experimental data reveals that these factors alone cannot fully account for the observed reduction in PDIV. Therefore, the study explores additional mechanisms mentioned in the literature, with particular focus on the development of a semi-conductive layer on the insulation coating in humid atmospheres. The numerical simulations of the surface charge dynamics within this layer suggests that the frequency-dependent decrease in PDIV under high-humidity atmospheres can indeed be attributed to the modification of the gap electric field due to the accumulation of surface charge in the semi-conductive layer.

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Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

On the influence of humidity on the breakdown strength of air—with a case study on the PDIV of contacting enameled wire pairs

Färber,

Šefl,

Franck

2023

J. Phys. D: Appl. Phys.

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“…Discharge ignition induces a rapid increase of the discharge current, typically in the nanosecond range, particularly for high over-voltage configurations [33]. Ionization in the air gap and sheaths formation governs the discharge development in its first steps.…”

Section: Discharge Parametersmentioning

confidence: 99%

Electrical Parameters of Nanosecond Dielectric Barrier Discharges (nsDBD)

Dobbelaar

Bessières

Arnaud‐Cormos

et al. 2022

IEEE Trans. Plasma Sci.

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In this study, an electrical device is proposed to generate plasmas in nanosecond dielectric barrier discharge (nsDBD) configuration and to measure the electrical parameters of the discharge over a large bandwidth. Electrical parameters were experimentally determined using a common dielectric barrier discharge equivalent circuit extended here to high frequencies. An efficient synchronization procedure based on a comparison to circuit simulation results was proposed. Discharge current pulses with rise times less than 1 ns and amplitudes up to 50 A were measured. The energy deposited into the plasma and the discharge resistance were determined as a function of time. In addition, circuit simulations support the experimental approach. The nsDBD was accurately modeled by a resistance of the plasma channel following a Rompe and Weizel law in series with a resistance for the discharge spreading along the dielectric surface and a sheath capacitance.

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“…As the applied voltage increases, the mean

false(μ false)

and variance

false(δ^{2} false)

decrease, but it is not decreased linearly. The more the applied voltage exceeds the DC breakdown voltage, the more electrons will be able to initiate a breakdown, then the time lag is shorter [4, 5]. However, as the applied voltage increases to an even higher value, the time lag decreases to a constant value which is a formative time lag.…”

Section: Time Lag Probability Distribution Analysismentioning

confidence: 99%

Effect of secondary discharge on the repeatability of contact discharge method

Wan

Wang

2017

Electron. lett.

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Submillimetre gaps caused by buttons, switches exist in the electronic device. IEC 61000-4-2 indicates that contact discharge method will be used if these floating metals could be touched in its normal use. Secondary discharge happens when conduct contact discharge on these floating metals. The influence of the secondary discharge on the repeatability of contact discharge method using experimental method is analysed. At same applied voltage, the secondary discharge current varies largely, causing bad repeatability. The time lag is the main parameter that influences the secondary discharge greatly. The time lag distribution is also analysed.

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Time Lag of Secondary ESD in Millimeter-Size Spark Gaps

Cited by 19 publications

References 21 publications

On the influence of humidity on the breakdown strength of air—with a case study on the PDIV of contacting enameled wire pairs

On the influence of humidity on the breakdown strength of air—with a case study on the PDIV of contacting enameled wire pairs

Electrical Parameters of Nanosecond Dielectric Barrier Discharges (nsDBD)

Effect of secondary discharge on the repeatability of contact discharge method

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