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Title: Superconducting electrical machine with two part rotor with center shaft capable of handling bending loads

Patent ·
OSTI ID:1568250

A superconducting electrical machine includes a rotor and a stator. The stator defines a cavity. The rotor is configured to rotate about a longitudinal axis. The rotor is disposed at least partially within the cavity. The rotor includes a shaft configured to rotate with the rotor, a rotor active section including at least a rotor torque tube and a superconductor, and a first re-entrant end attaching the shaft to the rotor active section. At most a threshold fraction of a bending force applied to the shaft is communicated to the rotor active section.

Research Organization:
Kato Engineering Inc., North Mankato, MN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0005140
Assignee:
Kato Engineering Inc. (North Mankato, MN)
Patent Number(s):
10,270,311
Application Number:
14/662,084
OSTI ID:
1568250
Resource Relation:
Patent File Date: 03/18/2015
Country of Publication:
United States
Language:
English

References (9)

Cantilevered field winding support for a superconducting AC machine patent October 1981
Internal torque tube for superconducting motor patent March 1999
In-shaft reverse brayton cycle cryo-cooler patent December 2008
Torque transmission assembly for superconducting rotating machines patent December 2009
Low heat leak, high torque power shaft for cryogenic machines patent September 2010
Dual armature motor/generator with flux linkage patent December 2011
Superconducting Electrical Machines patent-application July 2008
Electrical Machinery Incorporating Double Helix Coil Designs For Superconducting and Resistive Windings patent-application December 2009
Dual armature motor/generator with flux linkage between dual armatures and a superconducting field coil patent-application October 2010