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Observations on the Resistive Losses and the Electrostatic Field Distribution in anInsulating Nanocomposite
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-7269-5241
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-9241-8030
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2011 (English)Conference paper, Published paper (Refereed)
Abstract [en]

It has been reported that adding insulating nanoparticles to an epoxy like polymers increases its dielectric breakdown strength. Thermal runaway can act as one of several precursors to the electrical breakdown process, and resistive losses can be an underlying cause of the temperature increase. In this paper, to examine the influence of nanoparticles on the breakdown strength, the magnitude of the electric field distribution and its corresponding resistive losses around insulating Al2O3-nanoparticles has been determined for linear and non-linear epoxy polymer media w.r.t. filling degree of particles. The dc-E-field distribution has been ascertained using both analytical and numerical methods. It was observed that nanoparticle addition to a polymer creates both "no heating" regions and "significant heating" regions in the close vicinity of the interface.

Place, publisher, year, edition, pages
2011. 6050440- p.
Keyword [en]
Analytical and numerical methods, Breakdown strengths, Dielectric breakdown strength, Electric field distributions, Electrical breakdown process, Electrostatic field, Epoxy polymers, Filling degree, Nanoparticle addition, Resistive loss, Temperature increase, Thermal runaways, Underlying cause
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-81001DOI: 10.1109/URSIGASS.2011.6050440Scopus ID: 2-s2.0-81255127885ISBN: 978-142445117-3 (print)OAI: oai:DiVA.org:kth-81001DiVA: diva2:496954
Conference
2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011; Istanbul; Turkey; 13-20 August 2011
Note

QC 20140909

Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2014-09-09Bibliographically approved

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Jonsson, B. Lars G.Norgren, Martin

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