Space Charge Behaviour in LDPE after AC Ageing
Space Charge Behaviour in LDPE after AC Ageing
Space charge accumulation after ac ageing and its effect on dc poling has been studied in low-density polyethylene (LDPE). LDPE film samples with thickness of around 180mm were aged at an electric stress of 50kV/mm under 50 Hz ac voltage for various times at ambient temperature. Space charge dynamics in the samples after ageing were monitored using the pulsed electroacoustic (PEA) technique. Except the presence of considerable amount of space charge accumulation in the aged sample, the ageing has also brought a significant influence into the space dynamic under dc poling voltage. The ageing extent was previously investigated by chemical analysis (i.e. Fourier Transform Infrared FTIR and Raman spectrum) revealed little change taken place in the bulk of the material after ac ageing in the time frame studied. This indicates that the space charge measurement may be an effective method for diagnosing the early stage of material deterioration. It also provides additional information about charge mobility and trap depth that can be extracted from space charge profile.
AC ageing, space charge, LDPE
0-7803-8348-6
217-220
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Liu, X
b9b5844e-6141-4535-bbad-48b5abf07d33
2004
Fu, M
22d474b8-9c19-4ccb-9e64-6087ffe0941d
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Liu, X
b9b5844e-6141-4535-bbad-48b5abf07d33
Fu, M, Chen, G and Liu, X
(2004)
Space Charge Behaviour in LDPE after AC Ageing.
2004 IEEE International Conference on Solid Dielectrics, Toulouse, France.
05 - 09 Jul 2004.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Space charge accumulation after ac ageing and its effect on dc poling has been studied in low-density polyethylene (LDPE). LDPE film samples with thickness of around 180mm were aged at an electric stress of 50kV/mm under 50 Hz ac voltage for various times at ambient temperature. Space charge dynamics in the samples after ageing were monitored using the pulsed electroacoustic (PEA) technique. Except the presence of considerable amount of space charge accumulation in the aged sample, the ageing has also brought a significant influence into the space dynamic under dc poling voltage. The ageing extent was previously investigated by chemical analysis (i.e. Fourier Transform Infrared FTIR and Raman spectrum) revealed little change taken place in the bulk of the material after ac ageing in the time frame studied. This indicates that the space charge measurement may be an effective method for diagnosing the early stage of material deterioration. It also provides additional information about charge mobility and trap depth that can be extracted from space charge profile.
Text
ICSD2004-ac_space_charge.pdf
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More information
Published date: 2004
Additional Information:
Event Dates: July 5--9, 2004
Venue - Dates:
2004 IEEE International Conference on Solid Dielectrics, Toulouse, France, 2004-07-05 - 2004-07-09
Keywords:
AC ageing, space charge, LDPE
Organisations:
Electronics & Computer Science, EEE
Identifiers
Local EPrints ID: 260171
URI: http://eprints.soton.ac.uk/id/eprint/260171
ISBN: 0-7803-8348-6
PURE UUID: 38dc757f-e89f-459a-bd76-f6de98cc56a8
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Date deposited: 02 Dec 2004
Last modified: 14 Mar 2024 06:33
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Contributors
Author:
M Fu
Author:
G Chen
Author:
X Liu
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