TY - JOUR
T1 - Void ratios and mechanical losses in simulated CIC conductors with non-metallic conduit materials
AU - Takao, Tomoaki
AU - Yamaguchi, Yoshio
AU - Obama, Junichi
AU - Seki, Yoshitaka
AU - Miyagi, Daisuke
AU - Yamanaka, Atsuhiko
N1 - Funding Information:
Manuscript received October 20, 2003. This work was supported in part by the Research Organization for Advanced Science and Technology, Sophia University, Japan. T. Takao, Y. Yamaguchi, J. Obama, and Y. Seki are with Department of Electrical and Electronics Engineering, Faculty of Science and Technology, Sophia University, Tokyo, Japan (e-mail: takao@eco.ee.sophia.ac.jp). D. Miyagi is with Okayama University, Okayama, Japan (e-mail: miyagi@elec.okayama-u.ac.jp). A. Yamanaka is with the Research Center, Toyobo Company, Ltd., Shiga, Japan (e-mail: Atsuhiko_Yamanaka@kt.toyobo.co.jp). Digital Object Identifier 10.1109/TASC.2004.830563
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/6
Y1 - 2004/6
N2 - We have fabricated cable-in-conduit conductors (CICCs) with two kinds of nonmetallic conduit materials. Difference of frictional coefficients on surfaces of the materials vary by factors of two or three, and void ratios of the conductors are from 14% to 42%. We wound these CICCs on same-shaped bobbins, and measured the AC losses of the CICC coils. In spite of the fact that the coil shape, the superconducting wire, and background magnetic fields were the same, the measured losses were not, and depended on conduit materials and void ratios. According to the experimental results, in order to decrease the losses, a conduit material with high frictional coefficient is desirable. It is also shown that the losses decrease with the decrease of the void ratios in the CICCs.
AB - We have fabricated cable-in-conduit conductors (CICCs) with two kinds of nonmetallic conduit materials. Difference of frictional coefficients on surfaces of the materials vary by factors of two or three, and void ratios of the conductors are from 14% to 42%. We wound these CICCs on same-shaped bobbins, and measured the AC losses of the CICC coils. In spite of the fact that the coil shape, the superconducting wire, and background magnetic fields were the same, the measured losses were not, and depended on conduit materials and void ratios. According to the experimental results, in order to decrease the losses, a conduit material with high frictional coefficient is desirable. It is also shown that the losses decrease with the decrease of the void ratios in the CICCs.
KW - AC loss
KW - Cable-in-conduit-cable
KW - Friction
KW - Mechanical loss
KW - Void ratio
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U2 - 10.1109/TASC.2004.830563
DO - 10.1109/TASC.2004.830563
M3 - Article
AN - SCOPUS:4344657296
VL - 14
SP - 1310
EP - 1312
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 2
ER -