Preliminary study on AC superconducting machines

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1988Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Magnetics, volume 24, pages 1,473-1,476 (issn: 0018-9464, eissn: 1941-0069,

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Authors: M. Yamamoto; T. Ishigohka; T. Shimohka; N. Mizukami; M. Yamaguchi;

doi: 10.1109/20.11522

Preliminary study on AC superconducting machines

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Abstract

Issues involved in developing AC superconducting machines are reviewed with respect to the development of a superconducting coil and the overcurrent protection system of a superconducting transformer. A 4-kVA superconducting coil using 100-A-class 50/60-Hz superconductors was made and tested. As an extension of the 4 kVA coil, a model superconducting transformer was made and examined. The transformer has a novel quench-protection system with an auxiliary coil on the low-voltage side only. The behavior of the overcurrent protection system is described and experimentally confirmed. >

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