Study on high temperature superconducting coil for SMES

We have been undertaking studies regarding high temperature superconducting wire application to a coil for superconducting magnetic energy storage (SMES). As a result, we succeeded in developing an SMES coil using Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O silver-sheathed multifilamentary wire. In liquid...

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Bibliographic Details
Main Authors: Kanamori, Y., Uno, S., Suzawa, C., Watanabe, M., Isojima, S.
Format: Conference Proceeding
Language:English
Subjects:
Bismuth
Energy storage
Magnetic liquids
Nitrogen
Samarium
Strontium
Superconducting coils
Superconducting filaments and wires
Superconducting magnetic energy storage
Temperature
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Summary:We have been undertaking studies regarding high temperature superconducting wire application to a coil for superconducting magnetic energy storage (SMES). As a result, we succeeded in developing an SMES coil using Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O silver-sheathed multifilamentary wire. In liquid nitrogen this coil, comprising 10 pancake coils, has an energy storage capacity of 100 J with DC of 34.2 A and can operate without difficulty at a peak triangular current of 34.2 A with 2 Hz, simulating SMES operation. However, 100 J is too small for practical SMES use. To increase this amount, we investigated liquid neon as a coolant, as well as the magnetic and tensile stress dependence of the wire's critical current density in liquid neon. In addition, we measured the cooling ability and dielectric breakdown voltage of liquid neon.
DOI:10.1109/PESW.1999.747426