Design Theory for a Fully Superconducting Synchronous Motor or Generator.

摘要

The possibility of a high torque rotating machine in which both the field and the armature winding are superconducting has occasionally been suggested,and was recently discussed by the author. A more detailed consideration is given here,along with a conceptual design. Although some of the major design problems for such a machine would undoubtedly be mechanical in nature,involving supporting structures,only the overall electric and magnetic design is presently considered. In the design of novel apparatus it is often instructive to examine the apparatus ab initio. For this reason the analysis is developed in terms of basic electromagnetic field theory,but with the following,more or less,standard simplifications:end effects in the machine are neglected,and the current in the windings is assumed to flow only along the machine axis,which is the z direction. Therefore,the magnetic field is two-dimensional in the cylindrical coordinates R and theta and assumed to arise from current sheets at the two windings,which implies that the thickness,or build-up,of each winding is small compared with its diameter. (Author)