A design concept for the construction of a 1000-mva superconducting alternator is determined by consideration of (a) electrical requirements, (b) thermal isolation requirements, (c) mechanical strength, and (d) structural rigidity. The alternator consists of a rotating superconducting field winding and stationary water cooled stator. This study indicates that a superconducting machine will have lower specific weight and smaller physical size, higher critical speed, increased efficiency, lower synchronous reactance, increased I22t, and higher terminal voltage than conventional machines.

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