[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.9714/psac.2018.20.4.026

Contact resistance characteristics of 2G HTS coils with metal insulation

Sohn, M.H. (Superconductivity Research Center, Korea Electrotechnology Research Institute)
Ha, H. (Superconductivity Research Center, Korea Electrotechnology Research Institute)
Kim, S.K. (Superconductivity Research Center, Korea Electrotechnology Research Institute)

Publication Information

Progress in Superconductivity and Cryogenics / v.20, no.4, 2018 , pp. 26-30 More about this Journal

Abstract

The turn-to-turn contact resistance of 2G high temperature superconducting (HTS) coils with metal insulation (MI) is closely related to the stability of the coils, current charging rate and delay time [1]. MI coils were fabricated using five kinds of metal tapes such as aluminum (Al) tape, brass tape, stainless steel (SS) tape, copper (Cu)-plated tape and one-sided Cu-plated SS tape. The turn-to-turn contact surface resistances of co-winding model coils using Al tape, brass tape, and SS tape were 342.6, 343.6 and $724.8{\mu}{\Omega}{\cdot}cm^2$ , respectively. The turn-to-turn contact resistance of the model coil using the one-sided Cu-plated SS tape was $248.8{\mu}{\Omega}{\cdot}cm^2$ , which was lower than that of Al and brass tape. Al or brass tape can be used to reduce contact resistance and improve the stability of the coil. Considering strength, SS tape is recommended. For strength and low contact resistance, SS tape with copper plating on one side can be used.

Keywords

contact resistance; metal insulation; no insulation; 2G HTS coil;

Citations & Related Records

Reference

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