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Space charge measurement using PEA technique and signal recovery

Space charge measurement using PEA technique and signal recovery
Space charge measurement using PEA technique and signal recovery
A recurrent problem in high-voltage engineering is the measurement of electric field inside a solid dielectric subjected to high voltages. The electric field can be modified if the space charge is present in the dielectric. The space charge brings an increase in local electric field that may have an effect on the performance of the material. Therefore, the design, longevity, and performance of dielectrics, used as either electrets or insulators, depend on the space charge and the electric field within them. Here a non-destructive experimental technique is considered which gives space charge and electric field distributions inside dielectric samples by using acoustic pulses. However, it is realised that the technique does not give a real representation of the space charge when dispersive materials are considered. This paper presents a frequency domain algorithm to recover the space charge distribution which enables the method to be applied to either dispersive or non-dispersive dielectric materials.
0955-2219
1219-1222
Vazquez, A.
2211cc00-642e-4342-8c33-fb590e69b3a5
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Bosch, R.
536a13d5-d3b0-4fee-b1b7-6283c9951f13
Vazquez, A.
2211cc00-642e-4342-8c33-fb590e69b3a5
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Bosch, R.
536a13d5-d3b0-4fee-b1b7-6283c9951f13

Vazquez, A., Chen, G., Davies, A.E. and Bosch, R. (1999) Space charge measurement using PEA technique and signal recovery. Journal of the European Ceramic Society, 19 (6,7), 1219-1222.

Record type: Article

Abstract

A recurrent problem in high-voltage engineering is the measurement of electric field inside a solid dielectric subjected to high voltages. The electric field can be modified if the space charge is present in the dielectric. The space charge brings an increase in local electric field that may have an effect on the performance of the material. Therefore, the design, longevity, and performance of dielectrics, used as either electrets or insulators, depend on the space charge and the electric field within them. Here a non-destructive experimental technique is considered which gives space charge and electric field distributions inside dielectric samples by using acoustic pulses. However, it is realised that the technique does not give a real representation of the space charge when dispersive materials are considered. This paper presents a frequency domain algorithm to recover the space charge distribution which enables the method to be applied to either dispersive or non-dispersive dielectric materials.

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More information

Published date: 1999
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 253644
URI: http://eprints.soton.ac.uk/id/eprint/253644
ISSN: 0955-2219
PURE UUID: 1c767eb3-b973-451c-beed-db987159149c

Catalogue record

Date deposited: 11 Oct 2000
Last modified: 16 Jul 2019 23:04

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Contributors

Author: A. Vazquez
Author: G. Chen
Author: A.E. Davies
Author: R. Bosch

University divisions

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