US5051640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heteropolar excited synchronous machine
Assignee: Siemens AG
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Filing: 1990-04-27
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Granted: 1991-09-24
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Expires: 2010-04-27
Abstract
Abstract A stator-excited synchronous machine with an unwound, toothed rotor has a stator which is subdivided into sectors each of which is wound with an excitation winding. Permanent magnets are disposed between the stator sectors tangentially. The permanent magnets' magnetic fields in the stator sector yokes are directed in the circumferential direction, opposite to those of the adjoining excitation windings.
Inventors
- 👤 Werner Freise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:16
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/02; H02K21/04; H02K21/046; H02K19/00; H02K19/16; H02K19/22; H02K19/24; H02K21/38; H02K21/44
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
155 words
A synchronous machine excited via heteropolarization comprising: a) a stator having a plurality of stator teeth, said stator teeth forming stator slots therebetween, said stator being subdivided into a plurality of stator sectors; b) a toothed, laminated rotor arranged in the inner circumference of the stator, the rotor teeth and the stator teeth forming an air-gap therebetween; c) at least one excitation winding coupled with the stator for generating an excitation magnetic field; d) a power winding formed around at least one of the stator's teeth; e) permanent magnets coupled with the stator generating permanent magnetic fields; and f) said plurality of stator sectors including one of said at least one excitation windings wound around each of said plurality of stator sectors, respectively, said permanent magnets being located between the stator sectors arranged tangentially to the inner circumference and having the permanent magnetic fields oppositely directed to the excitation magnetic fields of the excitation windings.
Claim 2
Dependent Claim
155 words
A synchronous machine excited via heteropolarization comprising: a) a stator having a plurality of stator teeth, said stator teeth forming stator slots therebetween, said stator being subdivided into a plurality of stator sectors; b) a toothed, laminated rotor arranged in the inner circumference of the stator, the rotor teeth and the stator teeth forming an air-gap therebetween; c) at least one excitation winding coupled with the stator for generating an excitation magnetic field; d) a power winding formed around at least one of the stator's teeth; e) permanent magnets coupled with the stator generating permanent magnetic fields; and f) said plurality of stator sectors including one of said at least one excitation windings wound around each of said plurality of stator sectors, respectively, said permanent magnets being located between the stator sectors arranged tangentially to the inner circumference and having the permanent magnetic fields oppositely directed to the excitation magnetic fields of the excitation windings.
Claim 3
Dependent Claim
25 words
A synchronous machine according to claim 1, wherein the stator sectors having the permanent magnets arranged therebetween only extend over a portion of the circumference.
Claim 4
Dependent Claim
20 words
A synchronous machine according to claim 1 further comprising a flywheel of an internal combustion engine integrated with the rotor.
Claim 5
Dependent Claim
19 words
A synchronous machine according to claim 1 further comprising an electronic converter coupling for use as a direct-current motor.
Claim 6
Dependent Claim
54 words
A synchronous machine according to claim 1 wherein the stator sectors have an area with a reduced diameter which runs radially inward from the inner and outer circumferences of the stator sectors while maintaining substantially the same yoke cross-section width, before this area forms an excitation slot around which the excitation windings are wound.
Claim 7
Dependent Claim
20 words
A synchronous machine according to claim 2 further comprising a flywheel of an internal combustion engine integrated with the rotor.
Claim 8
Dependent Claim
19 words
A synchronous machine according to claim 2 further comprising an electronic converter coupling for a use as direct-current motor.
Claim 9
Dependent Claim
19 words
A synchronous machine according to claim 3 further comprising an electronic converter coupling for a use as direct-current motor.
Claim 10
Dependent Claim
53 words
A synchronous machine according to claim 2 wherein the stator sectors have a reduced cross-section area which runs radially inward from the inner and outer circumferences of the stator sections while maintaining substantially the same cross-section width, the reduced cross section area forms an excitation slot around which the excitation windings are wound.
Claim 11
Dependent Claim
53 words
A synchronous machine according to claim 3 wherein the stator sectors have a reduced cross-section area which runs radially inward from the inner and outer circumferences of the stator sectors while maintaining substantially the same cross-section width, the reduced cross section area forms an excitation slot around which the excitation windings are wound.
Claim 12
Dependent Claim
53 words
A synchronous machine according to claim 4 wherein the stator sectors have a reduced cross-section area which runs radially inward from the inner and outer circumferences of the stator sectors while maintaining substantially the same cross-section width, the reduced cross section area forms an excitation slot around which the excitation windings are wound.
Claim 13
Dependent Claim
21 words
The synchronous machine according to claim 1 further comprising a clutch part of an internal combustion engine integrated with the rotor.
Claim 14
Dependent Claim
24 words
The synchronous machine according to claim 1 further comprising a flywheel and a clutch part of an internal combustion engine integrated with the rotor.
Claim 15
Dependent Claim
19 words
The synchronous machine according to claim 1 further comprising an electronic converter coupling for use as a direct-current generator.
Claim 16
Dependent Claim
23 words
The synchronous machine according to claim 1 further comprising an electronic converter coupling for use as a direct-current motor and a direct-current generator.
Claim 17
Dependent Claim
21 words
The synchronous machine according to claim 2 further comprising a clutch part of an internal combustion engine integrated with the rotor.
Claim 18
Dependent Claim
24 words
The synchronous machine according to claim 2 further comprising a flywheel and a clutch part of an internal combustion engine integrated with the rotor.
Claim 19
Dependent Claim
19 words
The synchronous machine according to claim 2 further comprising an electronic converter coupling for use as a direct-current generator.
Claim 20
Dependent Claim
23 words
The synchronous machine according to claim 2 further comprising an electronic converter coupling for use as a direct-current motor and a direct-current generator.
Claim 21
Dependent Claim
19 words
The synchronous machine according to claim 3 further comprising an electronic converter coupling for use as a direct-current generator.
Claim 22
Dependent Claim
19 words
The synchronous machine according to claim 3 further comprising an electronic converter coupling for use as a direct-current motor.
Claim 23
Dependent Claim
23 words
The synchronous machine according to claim 3 further comprising an electronic converter coupling for use as a direct-current motor and a direct-current generator.
Claim 24
Dependent Claim
19 words
The synchronous machine according to claim 12 further comprising an electronic converter coupling for use as a direct-current motor.
Claim 25
Dependent Claim
23 words
The synchronous machine according to claim 12 further comprising an electronic converter coupling for use as a direct-current motor and a direct-current generator.
Claim 26
Dependent Claim
19 words
The synchronous machine according to claim 13 further comprising an electronic converter coupling for use as a direct-current motor.
Claim 27
Dependent Claim
23 words
The synchronous machine according to claim 13 further comprising an electronic converter coupling for use as a direct-current motor and a direct-current generator.
Claim 28
Dependent Claim
88 words
The synchronous machine according to claim 1, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot base.
Claim 29
Dependent Claim
88 words
The synchronous machine according to claim 1, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot opening.
Claim 30
Dependent Claim
88 words
The synchronous machine according to claim 2, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot base.
Claim 31
Dependent Claim
88 words
The synchronous machine according to claim 3, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot base.
Claim 32
Dependent Claim
88 words
The synchronous machine according to claim 4, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot base.
Claim 33
Dependent Claim
88 words
The synchronous machine according to claim 5, wherein: a) said power winding has a number "m" of phase windings, and m=2 through 4; b) said stator slots each have a base and an opening; c) a number "q" of said stator slots is provided per pole/phase winding, and q=1; and d) said stator teeth are disposed to alternately slant relative to a radial line of symmetry extending from a center of the synchronous machine such that a cross-section of said stator slots alternately widens toward the slot base.
Claim 34
Dependent Claim
19 words
The synchronous machine according to claim 12 further comprising an electronic converter coupling for use as a direct-current generator.
Claim 35
Dependent Claim
19 words
The synchronous machine according to claim 13 further comprising an electronic converter coupling for use as a direct-current generator.
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) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |