TY - JOUR
T1 - Turn-to-Turn Contact Resistance Measurement of No-Insulation REBCO Pancake Coil
T2 - External Field Dependence
AU - Noguchi, So
AU - Mori, Shunpei
AU - Mato, Takanobu
AU - Tatsuta, Takahiro
AU - Nishikawa, Daisuke
AU - Miyamoto, Kohei
AU - Inoue, Ryota
AU - Ueda, Hiroshi
AU - Kim, Seokbeom
N1 - Funding Information:
Manuscript received November 27, 2020; revised February 12, 2021 and March 5, 2021; accepted March 16, 2021. Date of publication March 31, 2021; date of current version April 16, 2021. This work was supported by JSPS KAKENHI under Grant 20H02125. (Corresponding author: So Noguchi.) So Noguchi, Shunpei Mori, and Takanobu Mato are with the Graduate School of Information Science and Technology, Hokkaido University, Sapporo 060-0814, Japan (e-mail: noguchi@ssi.ist.hokudai.ac.jp).
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2021/8
Y1 - 2021/8
N2 - The characteristics of no-insulation high-temperature superconducting (HTS) manet is dominated by the magnitude of the turn-to-turn contact resistance. A few techniques have been proposed to increase the turn-to-turn contact resistance. The relation between the turn-to-turn contact resistance and the magnet stability has also been investigated in simulations. Although the turn-to-turn contact resistance measurement was only the sudden-discharging method before, we proposed a low-frequency-AC current (LFAC) method. Using our proposed method, it is possible to measure the turn-to-turn contact resistance under various conditions. In a previous paper, we measured it when charging DC current to a single pancake coil. In this paper, the turn-to-turn contact resistance was measured by the LFAC method when an external field of 1-3 T was applied to a single pancake coil. The coil strain was also measured, and the relation of the turn-to-turn contact resistance and the coil strain was also discussed.
AB - The characteristics of no-insulation high-temperature superconducting (HTS) manet is dominated by the magnitude of the turn-to-turn contact resistance. A few techniques have been proposed to increase the turn-to-turn contact resistance. The relation between the turn-to-turn contact resistance and the magnet stability has also been investigated in simulations. Although the turn-to-turn contact resistance measurement was only the sudden-discharging method before, we proposed a low-frequency-AC current (LFAC) method. Using our proposed method, it is possible to measure the turn-to-turn contact resistance under various conditions. In a previous paper, we measured it when charging DC current to a single pancake coil. In this paper, the turn-to-turn contact resistance was measured by the LFAC method when an external field of 1-3 T was applied to a single pancake coil. The coil strain was also measured, and the relation of the turn-to-turn contact resistance and the coil strain was also discussed.
KW - No-insulation winding technique
KW - REBCO pancake coil
KW - turn-to-turn contact resistance measurement
UR - http://www.scopus.com/inward/record.url?scp=85103781082&partnerID=8YFLogxK
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U2 - 10.1109/TASC.2021.3070232
DO - 10.1109/TASC.2021.3070232
M3 - Article
AN - SCOPUS:85103781082
SN - 1051-8223
VL - 31
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 5
M1 - 9392348
ER -