Experimental test and numerical analysis to estimate permissible transport current considering protection of high-Tc superconducting tapes in adiabatic condition

Young Jae Kim, Ki Sung Chang, Min Cheol Ahn, Tae Kuk Ko

Research output: Contribution to journalArticle

Abstract

High-Tc superconducting (HTS) wires have showed good capabilities as an alternative conductor for superconducting magnet. The HTS wires have more current carrying capability within high external magnetic field and its stability against external disturbance is much higher than the low temperature superconducting (LTS) wires. But the HTS wire has slower normal zone propagation (NZP) velocity which makes HTS magnets hard to be protected from unexpected hot spot. This paper presents experimental test and numerical analysis about the relation between transport current and rate of temperature rise in a hot spot. A sample which contained a HTS wire, a heater, and temperature sensor was fabricated and an experimental test on measuring normal zone propagation and temperature of the HTS wire was conducted. A numerical model was also built to estimate transient temperature rise of a winding pack model which was representing practical winding of HTS magnets. The numerical model and its numerical estimation results are expected to be a guideline about designing proper protection technique and operating current for HTS magnets.

Original languageEnglish
Article number5680945
Pages (from-to)1665-1669
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 2
DOIs
Publication statusPublished - 2011 Jun 1

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Superconducting tapes
adiabatic conditions
Superconducting wire
tapes
numerical analysis
Numerical analysis
Superconducting magnets
wire
superconducting magnets
estimates
Numerical models
Temperature
propagation velocity
temperature sensors
Temperature sensors
heaters
temperature
disturbances
conductors
Magnetic fields

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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abstract = "High-Tc superconducting (HTS) wires have showed good capabilities as an alternative conductor for superconducting magnet. The HTS wires have more current carrying capability within high external magnetic field and its stability against external disturbance is much higher than the low temperature superconducting (LTS) wires. But the HTS wire has slower normal zone propagation (NZP) velocity which makes HTS magnets hard to be protected from unexpected hot spot. This paper presents experimental test and numerical analysis about the relation between transport current and rate of temperature rise in a hot spot. A sample which contained a HTS wire, a heater, and temperature sensor was fabricated and an experimental test on measuring normal zone propagation and temperature of the HTS wire was conducted. A numerical model was also built to estimate transient temperature rise of a winding pack model which was representing practical winding of HTS magnets. The numerical model and its numerical estimation results are expected to be a guideline about designing proper protection technique and operating current for HTS magnets.",
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Experimental test and numerical analysis to estimate permissible transport current considering protection of high-Tc superconducting tapes in adiabatic condition. / Kim, Young Jae; Chang, Ki Sung; Ahn, Min Cheol; Ko, Tae Kuk.

In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 2, 5680945, 01.06.2011, p. 1665-1669.

Research output: Contribution to journalArticle

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