Electrical insulation of high voltage inductor with co-axial electrode at floating voltage

Aracil, Jaime Cabanes, Lopez-Roldan, Jose, Coetzee, Jacob Carl, Tang, Tee, & Darmann, Frank (2014) Electrical insulation of high voltage inductor with co-axial electrode at floating voltage. IEEE Transactions on Dielectrics and Electrical Insulation, 21(3), pp. 1053-1060.

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Inductive fault current limiters (FCLs) have several advantages, such as significant current limitation, immediate triggering and relatively low losses. Despite these advantages, saturated core FCLs have not been commercialized due to its large size and associated high costs. A major remaining challenge is to reduce the footprint of the device. In this paper, a solution to reduce the overall footprint is proposed and discussed. In arrangements of windings on a core in reactors such as FCLs, the core is conventionally grounded. The electrical insulation distance between high voltage winding and core can be reduced if the core is left at floating potential. This paper shows the results of the investigation carried out on the insulation of such a coil-core assembly. Two experiments were conducted. In the first, the behavior of the apparatus under high voltage conditions was assessed by performing power frequency and lightning impulse tests. In the second experiment, a low voltage test was conducted during which voltages of different frequencies and pulses with varying rise times were applied. A finite element simulation was also carried out for comparison and further investigation

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3 citations in Scopus
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2 citations in Web of Science®

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ID Code: 74377
Item Type: Journal Article
Refereed: Yes
Keywords: Inductors, Dielectric breakdown, Insulation
DOI: 10.1109/TDEI.2014.6832248
ISSN: 1070-9878
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: © IEEE
Deposited On: 24 Jul 2014 01:57
Last Modified: 24 Jul 2014 22:46

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