EP0276624A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Switched reluctance motor
Assignee: Emerson Electric Co
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Filing: 1987-12-17
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Granted: —
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Expires: 2007-12-17
Abstract
Abstract A switched reluctance motor includes a stator having a central bore for rotation of a rotor therein. The stator has four equally spaced teeth extending radially inwardly from the yoke of the stator to define the central bore. A rotor assembly for rotation in the central bore of the stator is included. The rotor assembly has three teeth extending radially outwardly from the central axis of the motor to terminate in close proximity to the stator teeth. Stator windings associated with the stator teeth generate a magnetic field in the central bore to cause rotation of the rotor assembly.
Inventors
- 👤 Ilija Jovan Obradovic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 03:20
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/10; H02K19/103; H02K1/00; H02K1/06; H02K1/22; H02K1/24; H02K1/246; H02K1/28; H02K1/30; H02K7/00; H02K7/003; H02K7/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A switched reluctance motor comprising: a stator having a central bore for rotation of a rotor therein, said stator having four equally spaced teeth extending radially inwardly from the yoke of the stator to define the central bore; a rotor assembly for rotation in the central bore of the stator, said rotor assembly having three teeth extending radially outwardly from the central axis of the motor to terminate in close proximity to the stator teeth; and stator windings associated with the stator teeth to generate a magnetic field in the central bore to cause rotation of the rotor assembly.
Claim 2
Dependent Claim
99 words
A switched reluctance motor comprising: a stator having a central bore for rotation of a rotor therein, said stator having four equally spaced teeth extending radially inwardly from the yoke of the stator to define the central bore; a rotor assembly for rotation in the central bore of the stator, said rotor assembly having three teeth extending radially outwardly from the central axis of the motor to terminate in close proximity to the stator teeth; and stator windings associated with the stator teeth to generate a magnetic field in the central bore to cause rotation of the rotor assembly.
Claim 3
Dependent Claim
24 words
The switched reluctance motor as set forth in claim 1 wherein the teeth of the stator and the rotor assembly have generally rounded corners.
Claim 4
Dependent Claim
35 words
The switched reluctance motor as set forth in claim 1 wherein the rotor assembly comprises a stack of laminations and means for compressing the stack to secure the stack together against radial deformation during operation.
Claim 5
Dependent Claim
24 words
The switched reluctance motor as set forth in claim 3 wherein the compressing means includes a tension rod extending axially through the lamination stack.
Claim 6
Dependent Claim
44 words
The switched reluctance motor as set forth in claim 4 further including rotor shaft segments axially disposed on each side of the rotor stack, said tension rod being secured to both rotor shaft segments to define the axis of rotation of the rotor assembly.
Claim 7
Dependent Claim
32 words
The switched reluctance motor as set forth in claim 5 wherein the transverse cross-sectional area of the tension rod is substantially less than the transverse cross-sectional area of the rotor shaft segments.
Claim 8
Dependent Claim
39 words
The switched reluctance motor as set forth in claim 1 wherein the gaps between the teeth of the stator at the central bore are generally the same width as the width of the rotor teeth at the same location.
Claim 9
Dependent Claim
33 words
The switched reluctance motor as set forth in claim 1 further including means for energizing the stator windings so that the mmf through each tooth of the stator is unidirectional for that tooth.
Claim 10
Dependent Claim
31 words
The switched reluctance motor as set forth in claim 1 further including means for energizing the stator windings so that the pole associated with each winding has a predetermined, unchanging polarity.
References Cited (Backward Citations)
No citation records indexed.
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