Effects of turn-to-turn compactness in the straight sections of HTS racetrack coils on thermal and electrical characteristics

O. J. Kwon, K. L. Kim, Y. H. Choi, H. J. Shin, S. Hahn, Y. Iwasa, Haigun Lee

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The thermal and electrical characteristics of two GdBCO-coated conductor racetrack coils, one insulated with Kapton insulation and the other without turn-to-turn insulation, were investigated by typical voltage-current measurement, charge-discharge, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coils. The test results show that the thermal and electrical stabilities of the racetrack coil without insulation were enhanced considerably with increasing external pressure up to 0.5 MPa, whereas those of the insulated coil were not affected by the pressure. The non-insulated HTS racetrack-type coil with improved turn-to-turn thermal contact in the straight sections may have the potential to be manufactured into field coils for HTS wind turbine generators with highly enhanced thermal and electrical stabilities.

Original languageEnglish
Article number085025
JournalSuperconductor Science and Technology
Volume26
Issue number8
DOIs
Publication statusPublished - 2013 Aug 1

Fingerprint

void ratio
coils
Insulation
insulation
thermal stability
Voltage measurement
Turbogenerators
Electric current measurement
Kapton (trademark)
field coils
Wind turbines
wind turbines
electric contacts
generators
conductors
Hot Temperature
electric potential

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Ceramics and Composites
  • Materials Chemistry
  • Metals and Alloys

Cite this

Effects of turn-to-turn compactness in the straight sections of HTS racetrack coils on thermal and electrical characteristics. / Kwon, O. J.; Kim, K. L.; Choi, Y. H.; Shin, H. J.; Hahn, S.; Iwasa, Y.; Lee, Haigun.

In: Superconductor Science and Technology, Vol. 26, No. 8, 085025, 01.08.2013.

Research output: Contribution to journalArticle

@article{29d3455c0ee249fc982a2a3136697f1f,
title = "Effects of turn-to-turn compactness in the straight sections of HTS racetrack coils on thermal and electrical characteristics",
abstract = "The thermal and electrical characteristics of two GdBCO-coated conductor racetrack coils, one insulated with Kapton insulation and the other without turn-to-turn insulation, were investigated by typical voltage-current measurement, charge-discharge, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coils. The test results show that the thermal and electrical stabilities of the racetrack coil without insulation were enhanced considerably with increasing external pressure up to 0.5 MPa, whereas those of the insulated coil were not affected by the pressure. The non-insulated HTS racetrack-type coil with improved turn-to-turn thermal contact in the straight sections may have the potential to be manufactured into field coils for HTS wind turbine generators with highly enhanced thermal and electrical stabilities.",
author = "Kwon, {O. J.} and Kim, {K. L.} and Choi, {Y. H.} and Shin, {H. J.} and S. Hahn and Y. Iwasa and Haigun Lee",
year = "2013",
month = "8",
day = "1",
doi = "10.1088/0953-2048/26/8/085025",
language = "English",
volume = "26",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
publisher = "IOP Publishing Ltd.",
number = "8",

}

TY - JOUR

T1 - Effects of turn-to-turn compactness in the straight sections of HTS racetrack coils on thermal and electrical characteristics

AU - Kwon, O. J.

AU - Kim, K. L.

AU - Choi, Y. H.

AU - Shin, H. J.

AU - Hahn, S.

AU - Iwasa, Y.

AU - Lee, Haigun

PY - 2013/8/1

Y1 - 2013/8/1

N2 - The thermal and electrical characteristics of two GdBCO-coated conductor racetrack coils, one insulated with Kapton insulation and the other without turn-to-turn insulation, were investigated by typical voltage-current measurement, charge-discharge, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coils. The test results show that the thermal and electrical stabilities of the racetrack coil without insulation were enhanced considerably with increasing external pressure up to 0.5 MPa, whereas those of the insulated coil were not affected by the pressure. The non-insulated HTS racetrack-type coil with improved turn-to-turn thermal contact in the straight sections may have the potential to be manufactured into field coils for HTS wind turbine generators with highly enhanced thermal and electrical stabilities.

AB - The thermal and electrical characteristics of two GdBCO-coated conductor racetrack coils, one insulated with Kapton insulation and the other without turn-to-turn insulation, were investigated by typical voltage-current measurement, charge-discharge, sudden discharge, and over-current tests with respect to external pressures applied to the straight sections of the coils. The test results show that the thermal and electrical stabilities of the racetrack coil without insulation were enhanced considerably with increasing external pressure up to 0.5 MPa, whereas those of the insulated coil were not affected by the pressure. The non-insulated HTS racetrack-type coil with improved turn-to-turn thermal contact in the straight sections may have the potential to be manufactured into field coils for HTS wind turbine generators with highly enhanced thermal and electrical stabilities.

UR - http://www.scopus.com/inward/record.url?scp=84880277988&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880277988&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/26/8/085025

DO - 10.1088/0953-2048/26/8/085025

M3 - Article

VL - 26

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 8

M1 - 085025

ER -