Superconducting rotating machines with stationary field coils

Details Superconducting rotating machines with stationary field coils Superconducting rotating machines with stationary field coils

Filed on

2006-06-30

Date issued

2009-02-10

Examiner

Zarroli, Michael C (Department: 2839)

Patent Class

Electrical generator or motor structure

SubClass

Dynamoelectric

SubSubClass

Rotary

Other Related Categories

C310S168000, C310S268000

Type

Reexamination Certificate

Status

active

Patent number

07489060

Description

ABSTRACT:
A machine includes a shaft adapted to rotate about a longitudinal axis and formed of a magnetic material and a rotor assembly rotationally engaged with the shaft The rotor assembly includes a pair of rotor disks comprising a magnetic material, each of the rotor disks having a number of magnetic poles, the magnetic poles being spaced apart circumferentially. The rotor disks are coupled to the shaft for rotation about the shaft and generation of a rotating permeance wave. The machine further includes a stator assembly that includes a magnetic core stator disposed between the rotor disks, a number of armature windings supported on the magnetic core stator, and a stationary superconducting field coil disposed between the magnetic core stator and the shaft. The stationary superconducting field coil is configured as a stationary magneto-motive force (MMF) source for the rotating permeance wave produced by the rotor assembly to produce a rotating magnetic field.

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“Development of World's First Practical-Level Liquid Nitrogen-Cooled Supercondcutor Motor,” Jan. 20, 2005, 4 pages.

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