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

A Study on Thermal and Electrical Characteristic of Metallic Cladding GdBCO Coil

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 Jimin Kim (Department of Materials Science and Engineering, Korea University, Seoul, Korea)

Description

A no-insulation (NI) winding technique has been utilized in high-temperature superconducting (HTS) coils owing to enhanced thermal and electrical stabilities as well as high mechanical strength. However, the charge-discharge rate of the NI coil is considerably slower than that of completely insulated coils. Although metal-insulation (MI) and partial-insulation (PI) winding techniques have been suggested to ameliorate the slow charge-discharge rate of the NI coil, the current density of MI coils and mechanical strength of PI coils are respectively lower than those of their NI counterparts. Therefore, a metallic cladding (MC) winding technique that utilizes the HTS tape employing a μm-thick metallic cladding layer has recently been developed to resolve the drawbacks of the PI and MI coils. In this study, we examined the charge-discharge rate and thermal/electrical stabilities of the MC GdBCO coil through charge-discharge, sudden discharge and over-current tests. Based on the test results, we discussed the feasibility of the MC winding technique to obtain a thermally stable and mechanically robust HTS magnet with an enhanced overall current density.
Acknowledgement: This work was supported by the Materials and Components Technology Development Program of KEIT [10053590, Development of MgB2 wire and coil with a high critical current and long length for superconducting medical-electric power equipment] and in part by the Korea Basic Science Institute under Grant D37614.

Submitters Country Republic of Korea

Primary authors

Mr Jimin Kim (Department of Materials Science and Engineering, Korea University, Seoul, Korea) Prof. Haigun Lee (Department of Materials Science and Engineering, Korea University, Seoul, Korea)

Co-authors

Dr Jong Cheol Kim (Department of Materials Science and Engineering, Korea University, Seoul, Korea) Mr Young-Gyun Kim (Department of Materials Science and Engineering, Korea University, Seoul, Korea) Ms Hyun Hee Son (Department of Materials Science and Engineering, Korea University, Seoul, Korea) Mr Chang Ju Hyeon (Jeju National University) Prof. Ho Min Kim (Department of Electrical Engineering, Jeju National University, Jeju, Korea)

Presentation Materials

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