TY - GEN
T1 - The impact of electrode area and surface roughness on the pulsed breakdown strength water
AU - Wetz, D.
AU - Mankowski, J.
AU - Kristiansen, M.
PY - 2007
Y1 - 2007
N2 - Experimental results are presented on the degree to which electrode surface area and surface roughness impacts the dielectric strength of water. A 2 mm water gap was tested under pulsed conditions with maximum electric fields in excess of 1 MV/cm and maximum currents of more than 5 kA. Six different pairs of stainless steel electrodes, each having a unique Bruce profile and thus a different effective surface area, were used to achieve a uniform electric field across the gap. The differing electrode pair profiles, with effective areas ranging from 0.5 cm2 to 76 cm2, were designed to minimize the change in gap capacitance. Prior to each test, a different roughness average, ranging from 0.26 μm to 1.96 μm, was applied to the electrodes. Conclusions are made as to the effect both electrode surface area and surface roughness has on the holdoff voltage of water dielectric systems. In addition, shadowgraph images of pre-breakdown events are presented.
AB - Experimental results are presented on the degree to which electrode surface area and surface roughness impacts the dielectric strength of water. A 2 mm water gap was tested under pulsed conditions with maximum electric fields in excess of 1 MV/cm and maximum currents of more than 5 kA. Six different pairs of stainless steel electrodes, each having a unique Bruce profile and thus a different effective surface area, were used to achieve a uniform electric field across the gap. The differing electrode pair profiles, with effective areas ranging from 0.5 cm2 to 76 cm2, were designed to minimize the change in gap capacitance. Prior to each test, a different roughness average, ranging from 0.26 μm to 1.96 μm, was applied to the electrodes. Conclusions are made as to the effect both electrode surface area and surface roughness has on the holdoff voltage of water dielectric systems. In addition, shadowgraph images of pre-breakdown events are presented.
UR - http://www.scopus.com/inward/record.url?scp=45149085294&partnerID=8YFLogxK
U2 - 10.1109/PPC.2005.300544
DO - 10.1109/PPC.2005.300544
M3 - Conference contribution
AN - SCOPUS:45149085294
SN - 078039190X
SN - 9780780391901
T3 - Digest of Technical Papers-IEEE International Pulsed Power Conference
SP - 1163
EP - 1166
BT - 2005 IEEE Pulsed Power Conference, PPC
Y2 - 13 June 2005 through 17 June 2005
ER -