TY - JOUR
T1 - Critical Current Measurement in Three-in-One High-Temperature Superconducting Cables
AU - Ohya, M.
AU - Masuda, T.
AU - Nakano, T.
AU - Maruyama, O.
AU - Mimura, T.
AU - Honjo, S.
N1 - Funding Information:
This work was supported in part by the Japanese Ministry of Economy, Trade and Industry and in part by the New Energy and Industrial Technology Development Organization.
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2016/4
Y1 - 2016/4
N2 - This paper discusses the measurement of critical current IC in three-in-one high-temperature superconducting (HTS) cables. It is difficult to measure the IC of long-length HTS cables by simply connecting a dc power supply to both ends of a single cable core. We propose a go-and-return method, in which the HTS conductor layers of two of the three cores are used to carry current in both directions. A current in the opposite direction is induced in the HTS shield layers. However, the current induction is less than that from ac transmission, and magnetic field leaks from each core. As a result, the measured IC value becomes smaller than the sum of the wires' IC. We used a transient electromagnetic simulation, taking into account the IC-B characteristics of the wires. The estimated I-V waveforms for the 30- and 240-m cable systems are comparable with the measured ones. We have established a practical IC measuring technique that can be used with long-length HTS cable.
AB - This paper discusses the measurement of critical current IC in three-in-one high-temperature superconducting (HTS) cables. It is difficult to measure the IC of long-length HTS cables by simply connecting a dc power supply to both ends of a single cable core. We propose a go-and-return method, in which the HTS conductor layers of two of the three cores are used to carry current in both directions. A current in the opposite direction is induced in the HTS shield layers. However, the current induction is less than that from ac transmission, and magnetic field leaks from each core. As a result, the measured IC value becomes smaller than the sum of the wires' IC. We used a transient electromagnetic simulation, taking into account the IC-B characteristics of the wires. The estimated I-V waveforms for the 30- and 240-m cable systems are comparable with the measured ones. We have established a practical IC measuring technique that can be used with long-length HTS cable.
KW - critical current
KW - High-temperature superconductors
KW - power cables
UR - http://www.scopus.com/inward/record.url?scp=84968784394&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84968784394&partnerID=8YFLogxK
U2 - 10.1109/TASC.2016.2533021
DO - 10.1109/TASC.2016.2533021
M3 - Article
AN - SCOPUS:84968784394
SN - 1051-8223
VL - 26
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3
M1 - 7422025
ER -