CURRENT DISTRIBUTION OF AC SURFACE DISCHARGES AND ASSOCIATED CHEMISTRY - CentraleSupélec Access content directly
Journal Articles Journal of Electrostatics Year : 2006

CURRENT DISTRIBUTION OF AC SURFACE DISCHARGES AND ASSOCIATED CHEMISTRY

Abstract

It is shown that ac discharges propagating at an air / dielectric interface, though of planar structure, behave, till a critical voltage Vcrit, as corona discharges in an air gap, with similar propagation fields for the filamentary discharge components and similar glow components. This leads to consider the surface discharges as gas discharges propagating above the dielectric surface. Beyond Vcrit, the retention of charges by the dielectric surface becomes ineffective, due to the gas heating in the filamentary channels and to the heat subsequently transferred from these channels to the surface. In return, the surface gives its energy excess back to the discharge, so opening the way, on the surface, to leader-like discharges of higher conductivity, needing about 10 times lower fields to propagate.
Fichier principal
Vignette du fichier
OdicJE06.pdf (285.89 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-00221383 , version 1 (28-01-2008)

Identifiers

  • HAL Id : hal-00221383 , version 1

Cite

Emmanuel Odic, Alice Goldman, Max Goldman, Marielle Dhainaut, Rémi Dussart. CURRENT DISTRIBUTION OF AC SURFACE DISCHARGES AND ASSOCIATED CHEMISTRY. Journal of Electrostatics, 2006, 64 (7-9), pp.477-484. ⟨hal-00221383⟩
228 View
426 Download

Share

Gmail Mastodon Facebook X LinkedIn More