27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Thermal Quench Characteristics of 2G HTS Race Track Field Coil with Kapton Polyimide Insulation and Smart Insulation Materials

30 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m G3 - Stability of Conductors and Coils Wed-Af-Po3.11

Speaker

Mr Chang Ju Hyeon (Jeju National University)

Description

As a turn-to-turn insulation material on second generation high-temperature superconducting (2G HTS) coils, the smart insulation (SI) with a metal–insulator transition (MIT) materials, which have a resistivity variability on temperature, i.e., resistivity of MIT materials is decreased with temperature increase, may enhance not only the thermal stability but also current control performance of 2G HTS coils. Thus, it is expected to redeem No-insulation winding technique which has a delay of target magnetic field by bypassed current. This paper presents thermal quench characteristics of 2G HTS race track coil insulated with Kapton polyimide insulation (KPI) and SI materials, respectively for the rotor field winding of 1-HP-Class HTS rotating machine integrated with a contactless HTS excitation device. The constant-current experiment with heater activation and an over-current experiment with pulse current were performed to investigate thermal behaviors in quench state of respective 2G HTS coil insulated with KPI and SI materials and to verify the standout thermal performance of SI material as a turn-to-turn insulation. Finally, the applicability of SI material on 2G HTS coil system was discussed on the basis of above experimental results.
Acknowledgement: This work was supported in part by the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), grant funded by the Ministry of Trade, Industry & Energy, and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP), Republic of Korea. (Nos. 20164030201230 and 2016R1A2B4007324)

Submitters Country Republic of korea

Primary authors

Ho Min Kim (Jeju National University) Mr Chang Ju Hyeon (Jeju National University)

Co-authors

Mr Huu Luong Quach (Jeju National University) Hyung-Wook Kim (Korea Electrotechnology Research Institute) Dr Seog-Whan Kim (Korea Electrotechnology Research Institute) Young-Sik Jo (Korea Electrotechnology Research Institute) Ji Hyung Kim (Jeju National University)

Presentation Materials

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