Thermal analysis of HTS air-core transformer used in voltage compensation type active SFCL

Song, Meng; Tang, Yuejin; Li, J.; Zhou, You; Chen, Lei; Ren, Li

doi:10.1016/j.physc.2010.05.182

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…이트륨바륨구리산화물(YBa2Cu3O7-x, YBCO)은 대표적인 고온 초전도체로서 한류기(fault current limiter) [1], 3상 동축형 초전도 케이블 [2], 변압기 [3], 전력망 [4], 마이크로스트립 공진기 [5], 나노와 이어 방사선검출기 [6] [7], 열현미경(thermal microscopy) [8], 초전효과법 (pyroelectric method) [9] 등이 있는데, 그 중에서 펨토초 레이저를 이용한 열반사율 측정법 [10] …”

Section: 서 론unclassified

A Femtosecond Laser Metrology on the Thermal Conductivity of a Nanoscale Superconductor Material

Kim

2015

Journal of the Korean Society for Nondestructive Testing

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김윤영 Yun Young Kim 주요용어: 열전도율, 초전도체, 나노재료, 레이저평가법Abstract The present study investigates the thermal characteristics of a nanoscale superconductor material. A thin-film of YBa2Cu3O7-x was deposited on a SrTiO3 substrate by using a pulsed-laser deposition technique and characterized using an ultrafast laser system. In order to extract a thermal conductivity value, a numerical solution for a transient one-dimensional heat conduction equation was obtained using a finite-difference method. The curve-fit shows a value 1.2 W/mK, which is relatively lower than those of bulk materials. This research provides a material property of superconductor thin-film required for the thermal design of micro or nanodevices.

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Section: 서 론unclassified

A Femtosecond Laser Metrology on the Thermal Conductivity of a Nanoscale Superconductor Material

Kim

2015

Journal of the Korean Society for Nondestructive Testing

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“…The thermal contact resistance is critical in the cryogen-free cooling system by thermal conduction. The thermal analyses for conduction cooled HTS coils have been performed in previous studies [6][7][8]. The thermal analysis considering the thermal contact resistance, especially in contacts among HTS tapes of a HTS coil unlike previous studies, is performed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Thermal and structural analysis of a cryogenic conduction cooling system for a HTS NMR magnet

In¹,

Hong²,

Yeom³

et al. 2016

Progress in Superconductivity and Cryogenics

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The superconducting NMR magnets have used cryogen such as liquid helium for their cooling. The conduction cooling method using cryocoolers, however, makes the cryogenic cooling system for NMR magnets more compact and user-friendly than the cryogen cooling method. This paper describes the thermal and structural analysis of a cryogenic conduction cooling system for a 400 MHz HTS NMR magnet, focusing on the magnet assembly. The highly thermo-conductive cooling plates between HTS double pancake coils are used to transfer the heat generated in coils, namely Joule heating at lap splice joints, to thermal link blocks and finally the cryocooler. The conduction cooling structure of the HTS magnet assembly preliminarily designed is verified by thermal and structural analysis. The orthotropic thermal properties of the HTS coil, thermal contact resistance and radiation heat load are considered in the thermal analysis. The thermal analysis confirms the uniform temperature distribution for the present thermal design of the NMR magnet within 0.2 K. The mechanical stress and the displacement by the electromagnetic force and the thermal contraction are checked to verify structural stability. The structural analysis indicates that the mechanical stress on each component of the magnet is less than its material yield strength and the displacement is acceptable in comparison with the magnet dimension.

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Parameter design and performance simulation of a 10kV voltage compensation type active superconducting fault current limiter

Chen

Tang

Song

et al. 2013

Physica C: Superconductivity

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Thermal analysis of HTS air-core transformer used in voltage compensation type active SFCL

Cited by 7 publications

References 3 publications

A Femtosecond Laser Metrology on the Thermal Conductivity of a Nanoscale Superconductor Material

A Femtosecond Laser Metrology on the Thermal Conductivity of a Nanoscale Superconductor Material

Thermal and structural analysis of a cryogenic conduction cooling system for a HTS NMR magnet

Parameter design and performance simulation of a 10kV voltage compensation type active superconducting fault current limiter

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