TY - JOUR
T1 - Experimental evaluation of the effect on AC loss of a polygonal arrangement in YBCO assembled conductors
AU - Ogawa, J.
AU - Fukui, S.
AU - Oka, T.
AU - Sato, T.
AU - Ito, T.
AU - Sugisawa, J.
AU - Tamura, A.
N1 - Funding Information:
Manuscript received August 01, 2010; accepted September 15, 2010. Date of publication November 01, 2010; date of current version May 27, 2011. This work was supported in part by Grant-in-Aid for Scientific Research (C), the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2011/6
Y1 - 2011/6
N2 - The AC transport current loss in a YBCO polygonal arranged assembled conductor depends on its arrangement. The azimuthal magnetic field produced by the currents in neighboring tapes affects the current distribution in each tape, and it is anticipated that the AC loss reduction effect is greatest with a round form. To clarify the AC loss characteristics in a polygonal arranged YBCO assembled conductor, we investigated the influence of tape distances and the angle number in the polygon. To evaluate distance, we measured the AC losses in a YBCO hexagonally assembled conductor which was arranged with distances ranging from 0.2 mm-4.0 mm. To evaluate polygonal shapes, we compared YBCO polygonal assembled conductors which were arranged as a square, pentagon, hexagon, octagon or decagon at a distance of 0.5 mm. The experimental results show that the AC loss reduction effect is greatest when the polygon is arranged as a round shape.
AB - The AC transport current loss in a YBCO polygonal arranged assembled conductor depends on its arrangement. The azimuthal magnetic field produced by the currents in neighboring tapes affects the current distribution in each tape, and it is anticipated that the AC loss reduction effect is greatest with a round form. To clarify the AC loss characteristics in a polygonal arranged YBCO assembled conductor, we investigated the influence of tape distances and the angle number in the polygon. To evaluate distance, we measured the AC losses in a YBCO hexagonally assembled conductor which was arranged with distances ranging from 0.2 mm-4.0 mm. To evaluate polygonal shapes, we compared YBCO polygonal assembled conductors which were arranged as a square, pentagon, hexagon, octagon or decagon at a distance of 0.5 mm. The experimental results show that the AC loss reduction effect is greatest when the polygon is arranged as a round shape.
KW - AC transport current loss
KW - Four-terminal method
KW - Loss reduction effect
KW - Polygonal assembled conductor
KW - Superconducting transmission cable
KW - YBCO
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U2 - 10.1109/TASC.2010.2080659
DO - 10.1109/TASC.2010.2080659
M3 - Article
AN - SCOPUS:79957967230
VL - 21
SP - 3285
EP - 3288
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3 PART 3
M1 - 5613958
ER -