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Quench Detection Method of HTS Model Coil Using a Series-Type Thermocouple

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9 Author(s)
Daewon Kim ; Dept. of Electr. Eng., Changwon Nat. Univ., Changwon, South Korea ; Jin-Geun Kim ; A-Rong Kim ; Minwon Park
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This paper proposes a quench detection method applied to a HTS coil and also discusses the results of tests on an HTS BSCCO wire and an HTS YBCO coil. A series-type thermocouple was fabricated to detect quench, where several thermocouples were welded in series. As the series-type thermocouple has many points of detection, variation in temperature was detected at each point by using thermo-electromotive force. The feasibility of the proposed method was investigated through the quench detection tests on the YBCO coil. This method has advantages such as a simple structure and cost effectiveness and also protects the HTS coil by detecting partial quench and its propagation.

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Applied Superconductivity, IEEE Transactions on  (Volume:21 ,  Issue: 3 )