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

Superconducting properties of Prototype Pancake Coil using MgB2 Cable

Aug 28, 2017, 1:15 PM
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m E5 - Energy Storage - SMES Mon-Af-Po1.06


Masaru Tomita (Railway Technical Research Institute)


MgB2 wires with Tc ~ 39 K has been developed for the applications such as various coils. Considering hydrogen society in the future, MgB2 coils for the Superconducting Magnetic Energy Storage (SMES) devices under conduction cooling are worth serious consideration. First, the authors evaluated critical current density in commercially available MgB2 wires as a function of magnetic field and temperature (Ic-B-T) under conduction cooling. Ic of these MgB2 wires aligned in straight and curve lines under an external magnetic field up to 3.5 T by superconducting magnets was measured at 20-30 K. And then, the authors analyzed bending strain of MgB2 cable and coil, and designed double-pancake coils for several tens of kJ class SMES system. Finally, the authors produced a prototype pancake coil (200 mm inner diameter, 269 mm outer diameter, and thickness 7 mm) experimentally and evaluated coil properties under an external magnetic field. These results suggest can allow us to construct the robust energy storage system using MgB2 wires.
Acknowledgements: This work was supported by Advanced Low Carbon Technology Research and Development Program (ALCA) of Japan Science and Technology Agency (JST).

Submitters Country Japan

Primary author

Masaru Tomita (Railway Technical Research Institute)


Mr Taiki Onji (Railway Technical Research Institute) Mr Atsushi Ishihara (Railway Technical Research Institute) Mr Yusuke Kobayashi (Railway Technical Research Institute) Mr Tomoyuki Akasaka (Railway Technical Research Institute) Mr Yuuki Arai (Railway Technical Research Institute) Yusuke Fukumoto (Railway Technical Research Institute) Mr Shinya Mizuno (Sophia Univ.) TSUYOSHI YAGAI (Sophia University) Naoki Hirano (Chubu Elctric Power) Yasuhiro Makida (High Energy Accelerator Research Organization (JP)) Takakazu Shintomi (KEK) takataro Hamajima (Tohoku Univ.)

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