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Title: Superconducting electrical machine with rotor and stator having separate cryostats

Patent ·
OSTI ID:1479676

A superconducting electrical machine includes a rotor and a stator. The rotor includes rotor windings configured to superconduct when cooled in a rotor cryostat to a temperature no greater than a rotor superconducting temperature. The stator includes a stator windings configured to superconduct when cooled in a stator cryostat to a temperature no greater than a stator superconducting temperature. The rotor cryostat surrounds the rotor and is configured to allow transport of a first coolant through a plurality of conduits adjacent to the rotor windings in order to draw heat from the rotor windings and reduce the temperature of the rotor windings to a temperature no greater than the rotor superconducting temperature. The stator cryostat surrounds the stator and is configured to allow transport of a second coolant through a plurality of conduits adjacent to the stator windings in order to draw heat from the stator windings and reduce the temperature of the stator windings to a temperature no greater than the stator superconducting temperature.

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):
10,079,534
Application Number:
14/662,054
OSTI ID:
1479676
Resource Relation:
Patent File Date: 2015 Mar 18
Country of Publication:
United States
Language:
English

References (8)

Arrangement for cooling an electric machine patent August 1980
Superconducting electric rotating machine and its thermal insulation patent February 1989
Synchronous machine having superconductive stator and rotor windings patent March 1989
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
Super Conducting Apparatus and Vacuum Container for the Same patent-application June 2010

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