Possibility for an All-Superconducting Synchronous Motor or Generator.

摘要

It is feasible to construct a complete superconducting rotating synchronous machine having an overall efficiency comparable with the efficiency for an ordinary machine. The extent to which the potential for higher unit torque and smaller size may be realized depends upon factors such as the limiting magnetic field for which a thermally stable stator winding may be designed, the strength of materials available for holding together the rotor and stator windings, and the size of the magnetic shield. While some of these limits can be reasonably well calculated, determination of the limit imposed by conductor design requires a program of testing. Any advantage from size reduction of the machine would be partially offset by the necessity of having a helium refrigerator, with an input power equal to a few per cent of the machine rating. Since the two may be separately located, however, for some applications this disadvantage would not be overriding. (Author)