Superconducting Cryogenic Motors
The recent development of superconducting magnetic bearings of high load-carrying characteristics has led to the design of cryogenic motors which have essentially no internal losses from either mechanical or electrical sources. Small synchronous motors have been operated with the superconducting rotor in liquid helium, helium gas or in high vacuums. This paper will discuss some of the superconducting principles involved in the design of small reversible shaftless motors capable of prolonged high-speed operation while in a high vacuum, Motors of this type offer an unusually high degree of constancy of performance, which makes their use in cryogenic gyroscopes appear attractive, Undoubtedly numerous other applications exist. Only brief reference will be made to the superconducting bearings used in these motors since this subject is discussed in a recent paper by T. A. Buchhold  and also by I. Simon .
KeywordsLiquid Helium Flux Line Magnetic Bearing Rotor Surface General Electric Company
Unable to display preview. Download preview PDF.