Thermal Quench in HTS Double Pancake Race Track Coil

In large scale applications, such as SMES, motors and generators, High Temperature Superconducting (HTS) magnets are constructed with many stacks of the double-pancake coils connected in series. In spite of its higher thermal stability, HTS magnet can experience a severe quench, which can resulted f...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2007-06, Vol.17 (2), p.1603-1606
Main Authors: LEE, Jae-Deuk, KWON, Young-Kil, YU, Inkeun, JO, Young-Sik, BAIK, Seung-Kyu, LEE, Eon-Yong, KIM, Young-Chun, MOON, Tae-Sun, PARK, Heui-Ju, KWON, Woon-Sik, HONG, Jung-Pyo, PARK, Minwon
Format: Article
Language:English
Subjects:
Applied sciences
COILING
Coils (windings)
Conduction cooling
Connection and protection apparatus
COOLING
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Electromagnets
Energy accumulation
Exact sciences and technology
Heaters
High temperature superconductors
HTS magnet
HTS motor
Instruments
Large-scale systems
MAGNETS
Miscellaneous
Protection
QUENCHING MECHANISMS
Race
race-track coil
Samarium
Superconducting coils
Superconducting magnetic energy storage
Superconducting magnets
SUPERCONDUCTIVITY
SUPERCONDUCTORS
thermal quench
Thermal quenching
THERMAL STABILITY
THERMOCOUPLES
Various equipment and components
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Description
Summary:In large scale applications, such as SMES, motors and generators, High Temperature Superconducting (HTS) magnets are constructed with many stacks of the double-pancake coils connected in series. In spite of its higher thermal stability, HTS magnet can experience a severe quench, which can resulted from a very small portion. From HTS magnet design point of view, it is very important to predict the possibility of occurrence quench in the designed magnet to provide a suitable quench protection device. In this paper a highly instrumented HTS race track double-pancake coil was prepared to examine the quench development characteristics. It is wound using the Bi-2223 tape. Many voltage taps, cryogenic thermocouples and heater were installed in the winding. Conduction cooling method is adapted for the convenience of temperature. Quench development in the coil was measured under different operating current. The experimental details and results are presented in this paper.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2007.898184