MULTIPLE PLANE SPOKE STRUCTURE FOR A SUPERCONDUCTING DYNAMELECTRIC INE

摘要

MULTIPLE PLANE SPOKE STRUCTURE FOR A SUPERCONDUCTING DYNAMOELECTRIC MACHINE A multiple plane spoke structure for supporting a superconducting rotor assembly of a dynamoelectric machine. A plurality of generally radially extending support spokes interconnect an ambient temperature rotor portion with a cryogenic temperature rotor portion. The spokes are secured in tension between the two rotor portions and are displaced one from another along the axial length of the rotor member. The spokes are preferably grouped together in sets of at least two each with at least one of the spokes being angularly displaced with respect to the remaining spokes. The proper placement of these groups of spokes is determined by comparing the maximum deflection of the rotor assembly at the operational frequency to the maximum allowable deflection which can be tolerated under steady state conditions. Each spoke projects through radial openings in the core of the field winding structure. These openings are preferably located in the pole portions of the rotor core structure which lie intermediate of next adjacent field winding groups.