Electrical breakdown of short non-uniform air gaps

M. G. Hogg; I. V. Timoshkin; S. J. Macgregor; M. P. Wilson; M. J. Given; T. Wang

doi:10.1109/PPC.2013.6627482

Electrical breakdown of short non-uniform air gaps

M. G. Hogg, I. V. Timoshkin, S. J. Macgregor, M. P. Wilson, M. J. Given, T. Wang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

19 Citations (Scopus)

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Abstract

The breakdown voltage of air in highly divergent electric fields in not very short gaps (a few mm and above) is typically higher for negative energisation compared to positive energisation. Volumetric negative space charge, created by attachment of electrons to electronegative molecules in the case of negative energisation, reduces the field in the vicinity of the sharp cathode, resulting in higher breakdown voltages. This paper investigates self-breakdown voltages in short, mm and sub-mm gaps formed by point and plane electrodes and filled with atmospheric air at pressures 0.5-3.5 atm (abs). It is expected that space charge effects will change self-breakdown voltages for positive and negative energisation modes resulting in their different functional behaviour as compared with larger inter-electrode gaps.

Original language	English
Title of host publication	Digest of Technical Papers-IEEE International Pulsed Power Conference
Place of Publication	Piscataway, NJ
Publisher	IEEE
Number of pages	4
ISBN (Print)	9781467351676
DOIs	https://doi.org/10.1109/PPC.2013.6627482
Publication status	Published - 4 Dec 2013
Event	2013 19th IEEE Pulsed Power Conference, PPC 2013 - San Francisco, CA, United Kingdom Duration: 16 Jun 2013 → 21 Jun 2013

Conference

Conference	2013 19th IEEE Pulsed Power Conference, PPC 2013
Country/Territory	United Kingdom
City	San Francisco, CA
Period	16/06/13 → 21/06/13

Keywords

atmospheric air
electrical breakdown
electronegative molecules
interelectrode gaps
negative space charge
non-uniform
self-breakdown voltages
space charge effects

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10.1109/PPC.2013.6627482

Electrical Breakdown of Short Non-uniform Air Gaps Accepted author manuscript, 641 KB

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title = "Electrical breakdown of short non-uniform air gaps",

abstract = "The breakdown voltage of air in highly divergent electric fields in not very short gaps (a few mm and above) is typically higher for negative energisation compared to positive energisation. Volumetric negative space charge, created by attachment of electrons to electronegative molecules in the case of negative energisation, reduces the field in the vicinity of the sharp cathode, resulting in higher breakdown voltages. This paper investigates self-breakdown voltages in short, mm and sub-mm gaps formed by point and plane electrodes and filled with atmospheric air at pressures 0.5-3.5 atm (abs). It is expected that space charge effects will change self-breakdown voltages for positive and negative energisation modes resulting in their different functional behaviour as compared with larger inter-electrode gaps.",

keywords = "atmospheric air, electrical breakdown, electronegative molecules, interelectrode gaps, negative space charge, non-uniform, self-breakdown voltages, space charge effects",

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note = "(c) 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works; 2013 19th IEEE Pulsed Power Conference, PPC 2013 ; Conference date: 16-06-2013 Through 21-06-2013",

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Hogg, MG, Timoshkin, IV , Macgregor, SJ, Wilson, MP, Given, MJ & Wang, T 2013, Electrical breakdown of short non-uniform air gaps. in Digest of Technical Papers-IEEE International Pulsed Power Conference., 6627482, IEEE, Piscataway, NJ, 2013 19th IEEE Pulsed Power Conference, PPC 2013, San Francisco, CA, United Kingdom, 16/06/13. https://doi.org/10.1109/PPC.2013.6627482

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AU - Hogg, M. G.

AU - Timoshkin, I. V.

AU - Macgregor, S. J.

AU - Wilson, M. P.

AU - Given, M. J.

AU - Wang, T.

N1 - (c) 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works

PY - 2013/12/4

Y1 - 2013/12/4

N2 - The breakdown voltage of air in highly divergent electric fields in not very short gaps (a few mm and above) is typically higher for negative energisation compared to positive energisation. Volumetric negative space charge, created by attachment of electrons to electronegative molecules in the case of negative energisation, reduces the field in the vicinity of the sharp cathode, resulting in higher breakdown voltages. This paper investigates self-breakdown voltages in short, mm and sub-mm gaps formed by point and plane electrodes and filled with atmospheric air at pressures 0.5-3.5 atm (abs). It is expected that space charge effects will change self-breakdown voltages for positive and negative energisation modes resulting in their different functional behaviour as compared with larger inter-electrode gaps.

AB - The breakdown voltage of air in highly divergent electric fields in not very short gaps (a few mm and above) is typically higher for negative energisation compared to positive energisation. Volumetric negative space charge, created by attachment of electrons to electronegative molecules in the case of negative energisation, reduces the field in the vicinity of the sharp cathode, resulting in higher breakdown voltages. This paper investigates self-breakdown voltages in short, mm and sub-mm gaps formed by point and plane electrodes and filled with atmospheric air at pressures 0.5-3.5 atm (abs). It is expected that space charge effects will change self-breakdown voltages for positive and negative energisation modes resulting in their different functional behaviour as compared with larger inter-electrode gaps.

KW - atmospheric air

KW - electrical breakdown

KW - electronegative molecules

KW - interelectrode gaps

KW - negative space charge

KW - non-uniform

KW - self-breakdown voltages

KW - space charge effects

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UR - http://www.ece.unm.edu/ppps2013/

U2 - 10.1109/PPC.2013.6627482

DO - 10.1109/PPC.2013.6627482

M3 - Conference contribution book

AN - SCOPUS:84888588223

SN - 9781467351676

BT - Digest of Technical Papers-IEEE International Pulsed Power Conference

PB - IEEE

CY - Piscataway, NJ

T2 - 2013 19th IEEE Pulsed Power Conference, PPC 2013

Y2 - 16 June 2013 through 21 June 2013

ER -

Electrical breakdown of short non-uniform air gaps

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