The University of Southampton
University of Southampton Institutional Repository

Anomalous phenomena in solid dielectrics under high electric fields

Anomalous phenomena in solid dielectrics under high electric fields
Anomalous phenomena in solid dielectrics under high electric fields
Solid dielectrics have been used extensively in electrical and electronic industries. In the power industry, ultra high voltage transmission and cost saving of power equipment often result in that the dielectrics are operating under high electric fields. On the other hand, reduction in size for modern electronic systems also requires that the dielectrics operate reliably under high electric fields. It is therefore imperative to understand the response of dielectric materials to the high electric fields. In addition to high conduction current, power loss and potential breakdown, it has been observed over the years there are several anomalous phenomena occurred under high electric fields. These are surface potential cross-over phenomenon in corona charged dielectrics, discharging current flowing in the same direction as charging current, space charge fast decaying and transient space charge limited current. In the present paper all these phenomena have been experimentally demonstrated but most importantly a bipolar charge injection model has been used to understand the observed phenomena under high dc fields. Preliminary simulations based the model reveal that the presence of bipolar charges is the key to explain these anomalous phenomena.
954-60
IEEE
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Chen, G. (2009) Anomalous phenomena in solid dielectrics under high electric fields. In 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials. IEEE. pp. 954-60 . (doi:10.1109/ICPADM.2009.5252255).

Record type: Conference or Workshop Item (Paper)

Abstract

Solid dielectrics have been used extensively in electrical and electronic industries. In the power industry, ultra high voltage transmission and cost saving of power equipment often result in that the dielectrics are operating under high electric fields. On the other hand, reduction in size for modern electronic systems also requires that the dielectrics operate reliably under high electric fields. It is therefore imperative to understand the response of dielectric materials to the high electric fields. In addition to high conduction current, power loss and potential breakdown, it has been observed over the years there are several anomalous phenomena occurred under high electric fields. These are surface potential cross-over phenomenon in corona charged dielectrics, discharging current flowing in the same direction as charging current, space charge fast decaying and transient space charge limited current. In the present paper all these phenomena have been experimentally demonstrated but most importantly a bipolar charge injection model has been used to understand the observed phenomena under high dc fields. Preliminary simulations based the model reveal that the presence of bipolar charges is the key to explain these anomalous phenomena.

Full text not available from this repository.

More information

Published date: 2009
Additional Information: Imported from ISI Web of Science
Organisations: EEE

Identifiers

Local EPrints ID: 270259
URI: https://eprints.soton.ac.uk/id/eprint/270259
PURE UUID: 07c8104d-269e-40d4-b29d-4277baefd3a9

Catalogue record

Date deposited: 21 Apr 2010 07:46
Last modified: 13 Mar 2019 18:01

Export record

Altmetrics

Contributors

Author: G. Chen

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×