Application of IPTs to HTS cable conductor for uniform current distribution between their layers

Multi-layer HTS cables are apt to experience unequal current distribution among their layers, which is a main reason of the occurrence of ac losses. In this study, the application of IPTs, which are known to control the impedance among paths of a circuit using a magnetic shield effect, were proposed...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2005-06, Vol.15 (2), p.1739-1742
Main Authors: CHOI, Young-Sun, YIM, Seong-Woo, JUNGWOOK SIM, KIM, Hye-Rim, SOHN, Song-Ho, HWANG, Si-Dole
Format: Article
Language:English
Subjects:
AC loss
Applied sciences
Cable shielding
Cables
Circuits
Conductors
Conductors (devices)
Critical current
Current distribution
Current sharing
Electric connection. Cables. Wiring
ELECTRICAL CONDUCTORS
Electrical engineering. Electrical power engineering
Electronics
Exact sciences and technology
High temperature superconductors
HTS cable
Impedance
IPTs
Magnetic circuits
Magnetic shielding
Materials
Multilayers
Power cables
R&D
Research & development
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
SHIELDS (MAGNETIC)
Superconducting cables
Superconducting devices
Superconducting tapes
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TAPE
uniform current distribution
Various equipment and components
WIRE AND CABLE
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Summary:Multi-layer HTS cables are apt to experience unequal current distribution among their layers, which is a main reason of the occurrence of ac losses. In this study, the application of IPTs, which are known to control the impedance among paths of a circuit using a magnetic shield effect, were proposed to solve the problems of HTS cables. A 2 layer HTS cable conductor and IPTs were fabricated using Bi-2223/Ag tapes with a 115 A critical current. The inner layer of the HTS cable conductor was composed of 10 HTS tapes with a pitch length of 18 cm and the tapes of the outer layer were placed straightly without winding pitch. Applying various magnitudes of currents to IPTs, we investigated the current sharing performance between layers of the HTS cable conductor. The applied current was distributed uniformly into the layers successfully. In addition, the performance of IPTs was examined under various conditions for the practical application in detail. From the results, the application of IPTs to HTS cables was considered to be a useful method to reduce ac losses.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2005.849270