Development of a 500 kVA-class oxide-superconducting power transformer operated a liquid-nitrogen temperature.

Author(s) : FUNAKI K., IWAKUMA M., KAJIKAWA K., et al.

Type of article: Article

Summary

The authors have designed and constructed a 500 kVA-class oxide-superconducting power transformer. The windings are cooled by liquid nitrogen or subcooled nitrogen in a G-FRP cryostat of 785 millimeters in diameter and 1210 millimeters in height, that has a room-temperature space for an iron core with the diameter of 314 millimeters. The primary and secondary windings are three-stand and six-strand parallel conductors of a bismuth-2223 multi-filamentary tape with silver sheath, respectively. The strand 0.22 millimeter thick and 3.5 millimeter wide has 61 filaments with no twisting.

Details

Original title: Development of a 500 kVA-class oxide-superconducting power transformer operated a liquid-nitrogen temperature.
Record ID : 1999-2088
Languages: English
Source: Cryogenics - vol. 38 - n. 2
Publication date: 1998/02

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Indexing

Themes: Applications of liquified gases;
Superconduction
Keywords: BSCCO; Liquid nitrogen; Transformer; Superconductor; Loss; Performance; Development