Design and test of a simplified and reliable cryogenic system for high speed superconducting generator applications

T. Zhang, K. Haran, E. T. Laskaris, J. W. Bray

Research output: Contribution to journalArticlepeer-review

Abstract

Under the contract with Air Force Research Lab (AFRL), General Electric has successfully tested a high speed, superconducting generator for a Multimegawatt Electric Power System (MEPS). As the first successful full-power test of a superconducting generator for the Air Force, the demonstration tested the generator's load up to 1.3 MW and over 10,000 rpm. A key component of the generator system is a closed loop cryo-refrigeration system to cool the field excitation coil at liquid neon temperature. This paper reports the design and tests of the cryogenic system, including the liquid neon dewar, cryogenic cooling loop for the high temperature superconducting (HTS) field coil and the cryostat. Performance data during both short-term load run and long-term non-load run were presented. Also, some key issues to design a reliable cryogenic system for a superconducting generator were discussed.

Original languageEnglish (US)
Pages (from-to)380-383
Number of pages4
JournalCryogenics
Volume51
Issue number7
DOIs
StatePublished - Jul 2011
Externally publishedYes

Keywords

  • Cryogenic
  • High power density
  • High temperature superconducting
  • Superconducting generator

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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