SUPERCONDUCTING ELECTRICAL MACHINE WITH DOUBLE RE-ENTRANT ENDS FOR MINIMIZING HEAT LEAK

摘要

A superconducting electrical machine includes at least one re-entrant end including at least two segments. The at least two segments are continuous. At least one re-entrant end may be included in a stator of the superconducting electrical machine, the stator being disposed substantially coannular with a longitudinal axis. At least one re-entrant end may also be included in a rotor of the superconducting electrical machine, the rotor being configured to rotate about a longitudinal axis. A first segment is substantially perpendicular to a plane parallel to the longitudinal axis, and a second segment is coannular with the longitudinal axis. Heat distal from rotor windings and/or stator windings encounters a thermal resistance provided by the at least two segments as the heat travels towards the rotor windings and/or stator windings.

主权项

1. A superconducting electrical machine, comprising:
a rotor configured to rotate about a longitudinal axis, the rotor comprising:
a rotor winding configured to superconduct when a temperature of the rotor winding is no greater than a superconducting temperature;a drive end;a non-drive end; andtwo re-entrant ends, of which a first re-entrant end is disposed proximate to the drive end, and a second re-entrant end is disposed proximate to the non-drive end, each of the two re-entrant ends comprising:
at least two rotor segments, wherein the rotor segments are continuous, a first rotor segment is substantially perpendicular to a plane parallel to the longitudinal axis, and a second rotor segment is coannular with the longitudinal axis; wherein heat distal from the rotor winding encounters thermal resistance provided by the at least one re-entrant end as the heat travels towards the rotor winding.