US6603231B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid superconducting motor/generator
Assignee: Reliance Electric Technologies LLC
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Filing: 2001-08-17
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Granted: 2003-08-05
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Expires: 2021-08-17
Abstract
Abstract A high temperature superconductor (HTS) synchronous motor or generator includes permanent magnets disposed in the rotor. The permanent magnets can be magnetized after the rotor assembly is manufactured. The permanent magnets reduce flux density perpendicular to the superconducting coil. The magnets can be disposed in the d-axis of the motor. The motor is particularly useful in propulsion applications.
Inventors
- 👤 Viatcheslav V. Dombrovski
- 👤 David I. Driscoll
- 👤 Ira B. Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/02; H02K21/04; H02K21/042; H02K55/00; H02K55/02; H02K55/04; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
66 words
An electromotive device, comprising: a stator; and a rotor, the rotor including at least one superconducting winding and at least one permanent magnet, wherein the rotor includes a central axis, the rotor rotating about the central axis, the superconducting winding having a circumference wherein the circumference contains the permanent magnet or a radial segment extending from the central axis through the circumference intersects the permanent magnet.
Claim 2
Dependent Claim
66 words
An electromotive device, comprising: a stator; and a rotor, the rotor including at least one superconducting winding and at least one permanent magnet, wherein the rotor includes a central axis, the rotor rotating about the central axis, the superconducting winding having a circumference wherein the circumference contains the permanent magnet or a radial segment extending from the central axis through the circumference intersects the permanent magnet.
Claim 3
Dependent Claim
24 words
The electromotive device of claim 1 , wherein the permanent magnet is disposed on a direct axis of a rotor pole of the rotor.
Claim 4
Dependent Claim
29 words
The electromotive device of claim 1 , wherein the superconducting winding and the permanent magnet are disposed between an inner radius and an outer radius from the central axis.
Claim 5
Dependent Claim
51 words
The electromotive device of claim 3 , wherein the inner radius and the outer radius are defined by an inner most distance from an inside surface of the superconducting winding to the central axis and an outer most distance from an outside surface of the superconducting winding to the central axis.
Claim 6
Dependent Claim
23 words
The electromotive device of claim 4 , wherein the stator is disposed in a direct axis of a rotor pole on the rotor.
Claim 7
Dependent Claim
17 words
The electromotive device of claim 1 , wherein the permanent magnet includes rare earth and ferrite materials.
Claim 8
Dependent Claim
24 words
The electromotive device of claim 1 , wherein the permanent magnet is disposed in a quadrature axis of a rotor pole of the rotor.
Claim 9
Dependent Claim
11 words
The electromotive device of claim 1 further comprising a ferromagnetic core.
Claim 10
Dependent Claim
18 words
The electromotive device of claim 1 , wherein the permanent magnet is magnetized after assembly of the rotor.
Claim 11
Dependent Claim
19 words
The electromotive device of claim 9 , wherein the permanent magnet is magnetized or demagnetized by the superconducting winding.
Claim 12
Dependent Claim
19 words
The electromotive device of claim 1 , wherein the permanent magnet is magnetized or demagnetized by the superconducting winding.
Claim 13
Dependent Claim
18 words
The electromotive device of claim 1 , wherein the permanent magnet is disposed to increase used magnetic flux.
Claim 14
Dependent Claim
23 words
The electromotive device of claim 1 , further comprising at least two permanent magnets disposed between a first end and a second end.
Claim 15
Dependent Claim
85 words
A rotor assembly for a synchronous electromechanical machine, the rotor assembly comprising: a superconducting coil; and a permanent magnet, wherein the permanent magnet is disposed so that a cross-sectional plane of the rotor assembly intersects the permanent magnet and the superconducting coil, wherein the cross-sectional plane is perpendicular to a central axis of the rotor assembly, the rotor assembly configured to rotate about the central axis, wherein the superconducting coil is further from the central axis than the permanent magnet or surrounds the permanent magnet.
Claim 16
Dependent Claim
85 words
A rotor assembly for a synchronous electromechanical machine, the rotor assembly comprising: a superconducting coil; and a permanent magnet, wherein the permanent magnet is disposed so that a cross-sectional plane of the rotor assembly intersects the permanent magnet and the superconducting coil, wherein the cross-sectional plane is perpendicular to a central axis of the rotor assembly, the rotor assembly configured to rotate about the central axis, wherein the superconducting coil is further from the central axis than the permanent magnet or surrounds the permanent magnet.
Claim 17
Dependent Claim
28 words
The rotor assembly of claim 14 , wherein the permanent magnet exhibits a high coercive force of more than 1×10 6 A/m at temperatures near 233K or less.
Claim 18
Independent Claim
87 words
A method of operating a rotating electromechanical device, the method comprising: providing a stator field with a stator having a plurality of poles; and providing a rotor field with a rotor, the rotor having at least one permanent magnet and at least one superconducting coil, wherein the permanent magnet either is at least partially located within a cylindrical boundary defined by the superconducting coil and within a same quadrature portion of the rotor or is at least partially located between the superconducting coil and a central axis.
Claim 19
Independent Claim
87 words
A method of operating a rotating electromechanical device, the method comprising: providing a stator field with a stator having a plurality of poles; and providing a rotor field with a rotor, the rotor having at least one permanent magnet and at least one superconducting coil, wherein the permanent magnet either is at least partially located within a cylindrical boundary defined by the superconducting coil and within a same quadrature portion of the rotor or is at least partially located between the superconducting coil and a central axis.
Claim 20
Dependent Claim
45 words
The method of claim 16 , wherein the cylindrical boundary has a first end at a point on a central axis of the rotor and a second end at a point on the central axis of the rotor, the rotor rotating about the central axis.
Claim 21
Dependent Claim
16 words
The method of claim 17 , wherein the permanent magnet does not intersect the central axis.
Claim 22
Dependent Claim
17 words
The method of claim 16 , wherein the permanent magnet is directly attached to a rotor core.
Claim 23
Dependent Claim
14 words
The method of claim 19 , wherein the rotor body is a magnetic material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-08-04 | 2007-02-03 | 2007-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-08-04 | 2011-02-03 | 2011-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-08-04 | 2015-02-03 | 2015-08-05 | $7700.00 | Window Closed / Lapsed |