Evaluation on Electrical and Thermal Characteristics of Multi-Stacked HTS Coated Conductor With Various Stabilizers

Transporting large currents through High- Tc (HTS) current leads (CLs) inevitably involves using several HTS tapes in multi-stacked form to obtain a high current density. For safe operation of HTS CLs, the thermal stability of stacked HTS tapes should be considered. In this paper, we investigated el...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2014-06, Vol.24 (3), p.1-4
Main Authors: Young Gun Park, Young Jin Hwang, Jae Young Jang, Hyung Jun Kim, Woo Seung Lee, Hyun Chul Jo, Ho Min Kim, Yong Soo Yoon, Tae Kuk Ko
Format: Article
Language:English
Subjects:
Applied sciences
Coated conductor (CC)
Conductors
current leads (CLs)
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Electronics
Exact sciences and technology
High-temperature superconductors
Materials
minimum quench energy (MQE)
Miscellaneous
Resistance heating
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
stability
stacks
Superconducting devices
Temperature
Temperature measurement
Thermal stability
Various equipment and components
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Summary:Transporting large currents through High- Tc (HTS) current leads (CLs) inevitably involves using several HTS tapes in multi-stacked form to obtain a high current density. For safe operation of HTS CLs, the thermal stability of stacked HTS tapes should be considered. In this paper, we investigated electrical and thermal properties of multi-stacked HTS tapes using 2G coated conductor (CC). Three kinds of commercial CC with different specification of stabilizer were used for the experiment. Each stack sample was fabricated by soldering together CC tapes using In-Bi alloy. To verify the effects of a stabilizer on thermal stability for multi-stacked CC tapes, we performed an experiment of minimum quench energy measurements. In addition, transient electrical and thermal behavior were measured as a function of the external heat input energy. Each stack sample has a heater made of nickel-chromium (Ni-Cr) wire to make the external heat disturbance and a type-E thermocouple to measure the temperature. Based on the test results, electrical and thermal characteristics of multi-stacked CC tapes were evaluated.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2013.2291833