Development of 2 kA high-temperature-superconductor current lead system for AC applications

Journal Article · Mon Jul 01 04:00:00 EDT 1996 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.511424· OSTI ID:287609

Yasukawa, Y; Takita, K ^[1]; Hiue, H ^[2]

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1. Fuji Electric Corporate Research and Development, Ltd., Ichihara, Chiba (Japan)
2. Fuji Electric Co., Ltd., Tokyo (Japan); and others

High-temperature-superconductor (HTS) current leads are suitable for AC applications because of lower AC loss during operation as well as their lower thermal conductivity. The authors have designed, fabricated and tested a 2 kA HTS current lead system. It is composed of copper leads for the higher temperature region and HTS elements (BSCCO-2223) for the lower temperature region. The copper section is cooled with cold nitrogen gas, while the HTS section is cooled by solid state heat conduction. Tests demonstrated the current lead system can successfully conduct a current of 2,000 Arms at 50 Hz. In order to investigate to evaluate the performance of the current lead system, measurements such as the steady state boil-off rate of cooling gas at various operating currents and the characteristics of current sharing in each HTS element were made. Tests of a.c. behavior in HTS elements were also carried out.

• OSTI ID: 287609
• Report Number(s): CONF-950691--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt1 Vol. 32; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
BISMUTH OXIDES
CALCIUM OXIDES
CONDUCTOR DEVICES
COPPER OXIDES
DESIGN
HIGH-TC SUPERCONDUCTORS
PERFORMANCE
STRONTIUM OXIDES