Analysis on Electrical and Thermal Characteristics of a No-Insulation HTS Coil Considering Heat Generation in Steady and Transient States

This paper presents the design process of an equivalent circuit simulation (ECS) method and its analysis results to evaluate the delayed response time and thermal stability behavior of no-insulation (NI) second-generation high-temperature superconducting (2G HTS) coils. The electrical and thermal ch...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2019-08, Vol.29 (5), p.1-6
Main Authors: Quach, Huu Luong, Kim, Ji Hyung, Chae, Yoon Seok, Moon, Jae Hyung, Ko, Jung Hyup, Chae, Sang Heon, Ahn, Jin Hong, Kim, Eel-Hwan, Kim, Se Ho, Jin, Young Gyu, Kim, Hyung-Wook, Jo, Young-Sik, Kim, Ho Min
Format: Article
Language:English
Subjects:
Circuit design
Coils
Computer simulation
Delayed response time
Equivalent circuits
Heat generation
High temperature
High-temperature superconductors
Insulation
Integrated circuit modeling
Mathematical model
Mathematical models
no-insulation coil
Numerical models
Overcurrent
Response time
Simulation
Stability analysis
steady-state simulation
Superconductivity
Thermal stability
thermal stability behavior
Transient analysis
transient-state simulation
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Summary:This paper presents the design process of an equivalent circuit simulation (ECS) method and its analysis results to evaluate the delayed response time and thermal stability behavior of no-insulation (NI) second-generation high-temperature superconducting (2G HTS) coils. The electrical and thermal characteristics of NI HTS coil were introduced by many researchers through the simulation method base on ECS model, but the feature of heat generation by superconducting and stabilizer layer was not considered in the previous studies. In this study, we analyze the electrical and thermal characteristics considering heat generation of NI HTS coil in both steady and transient states. First, an electrical ECS model was proposed to numerically analyze the characteristics of the NI 2G HTS coil in steady and transient states. A steady-state simulation was performed under rated operating-current shooting to estimate the magnetic-field response performance of the NI HTS coil. The transient-state simulation was performed under an overcurrent shooting to analyze the thermal quench behavior. In addition, the simulation results of the NI HTS coil were discussed and compared with the experimental ones to validate the simulation approach based on the proposed equivalent electric-circuit model.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2019.2898543