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FABRICATION AND PRELIMINARY TEST OF A 72 KILOVA SUPERCONDUCTING FOUR-WINDING POWER TRANSFORMER.

[In Japanese. / En japonais.]

Author(s) : IWAKUMA M.

Type of article: Article

Summary

THE AUTHORS HAVE DESIGNED AND CONSTRUCTED A SUPERCONDUCTING FOUR-WINDING POWER TRANSFORMER IN WHICH MAIN WINDINGS WERE WOUND BY NIOBIUM-TITANIUM WIRES DEVELOPED FOR ALTERNATING CURRENT USE. THE MAXIMUM CAPACITY OF 72 KILOVA WAS ATTAINED WITH HIGH PERFORMANCE OF EFFICIENCY AND VOLTAGE REGULATION. THE LIFTING WEIGHT OF THE TRANSFORMER WAS ABOUT ONE SEVENTH COMPARED WITH CONVENTIONAL ONES. THE AUTHORS INVESTIGATED THE PROCESSES OF QUENCH AND RECOVERY IN MAIN WINDINGS IN AN ACCIDENTAL SHORT-CIRCUIT. IN THIS TEST, INSTANTANEOUS PARTIAL QUENCHES OCCURRED IN THE MAIN WINDINGS, AND TRANSPORT CURRENT WAS SHIFTED FROM THE MAIN COILS TO THE AUXILIARY ONES. IT WAS CONFIRMED THAT THE SHORT-CIRCUIT CURRENT WAS LIMITED BY LOOSE COUPLING BETWEEN THE AUXILIARY WINDINGS.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1988-2195
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 22 - n. 6
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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