Details

Autor(en) / Beteiligte

• Yagai, T.
• Takahashi, M.
• Inomata, R.
• Takao, T.
• Onji, T.
• Komagome, T.
• Makida, Y.
• Shintomi, T.
• Hirano, N.
• Hamajima, T.
• Kikuchi, A.
• Nishijima, G.
• Matsumoto, A.

Titel

Demonstration of kA-Class Rutherford Cables Using MgB2 Wires for an Energy Storage Device Suitable for a Liquid Hydrogen Indirect Cooling

Ist Teil von

• IEEE transactions on applied superconductivity, 2022-09, Vol.32 (6), p.1-5

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2022

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• Superconducting Magnetic Energy Storage (SMES) has been a promising option amongst potential other storage devices to support world-wide demands for introducing more renewables into the utility grid. If MgB 2 strands are used for SMES, liquid hydrogen, one of the renewables, could be used not only as a clean energy source but also as a coolant for the superconducting device. For large-scale coil design, mechanically fragile multi-filament strands should be used for their low AC loss feature considering that the transport current inside the coil would be always changing. To realize such a design, we designed and fabricated the large current capacity for AC-use Rutherford cable, together with experimental tests for its feasibility assessment. Based on the latest test results and development of commercial MgB 2 strands with high mechanical strength, and this research and development of kA-class cable at liquid helium temperature for extrapolating the critical current ( I c ) at hydrogen temperature, we believe this approach has the potential to make a practical SMES device with MJ capacity. In this paper, the world's largest-capacity AC cable design and test results including critical current evaluation under several background field strengths are shown, and the stability and current re-distribution are also discussed.