open access

https://hdl.handle.net/2115/74264

Turn-to-Turn Contact Resistance Measurement of No-Insulation REBCO Pancake Coils

英語

turn-to-turn contact resistance measurement

2019-08

IEEE (Institute of Electrical and Electronics Engineers)

IEEE transactions on applied superconductivity

29(5)

4601605

The turn-to-turn contact resistance (characteristic resistance) is a very important factor to a no-insulation (NI)(RE)Ba-2 Cu3Oy (REBCO) pancake coil. It characterizes the stability and charging delay of NI REBCO pancake coils. However, the ordinary sudden-discharging method cannot measure the turnto-turn contact resistance under different conditions, such as an operating current, a temperature, and an external magnetic field. Although the turn-to-turn contact condition is strongly affected by the pressure inside of the NI REBCO coils, the feature of the contact resistance must he clarified to estimate the stability of NI REBCO coils. In this paper, we have proposed a new method to measure the turn-to-turn contact resistance applying ac current. The theory and the measurement results are also shown. The measured turn-to-turn contact resistance is reasonable, compared with that measured by the ordinary sudden-discharging method. In near future, we will measure the turn-to-turn contact resistance under different conditions by means of the proposed method.

学術雑誌論文

Accepted Manuscript

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1051-8223

AA10791666