Patent US5672926A successfully refreshed from Google Patents.
US5672926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid-energized electric machine
Assignee: Siemens AG
•
Filing: 1996-02-20
•
Granted: 1997-09-30
•
Expires: 2016-02-20
Abstract
Abstract A hybrid-energized electric machine includes a laminated stator core that has a stator winding and is arranged in a magnetic yoke, where the rotor is divided axially into two rotor halves, and each rotor half has permanent-field poles and non-energized poles arranged in succession in accordance with the pole pitch, where one rotor half is fitted with permanent magnets of one polarity (N) and the other rotor half is fitted with permanent magnets of the other polarity (S), and the permanent-field poles of both rotor halves are offset with respect to each other by one pole pitch, and said electric machine is also provided with an electric field coil designed as a ring coil. Both scattering and line losses can be reduced due to the fact that rotor halves are arranged on the rotor shaft with an axial distance between them, and field coil is inserted into the space between rotor halves.
Inventors
- 👤 Jurgen Brandes
- 👤 Uwe Schuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:13
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2746; H02K21/00; H02K21/02; H02K21/04; H02K21/042; H02K3/00; H02K3/46; H02K3/52; H02K3/527; H02K21/12; H02K21/14; H02K21/20; Y; Y10; Y10S; Y10S174/00; Y10S174/13; Y10S174/14; Y10S174/19; Y10S174/20; Y10S174/21
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
256 words
A hybrid-energized electric machine comprising: a) a magnetic yoke; b) a stator winding: c) a laminated stator core being disposed in the magnetic yoke and supporting the stator winding; d) a rotor shaft; e) a rotor being divided axially into a first rotor half and a second rotor half, forming a space therebetween, said first rotor half including: (i) a first permanent magnet having a first polarity (N); (ii) a first plurality of permanent field poles that are energized by the first permanent magnet; and (iii) a first plurality of non-energized poles that are not energized by the first permanent magnet, wherein the first plurality of permanent field poles and the first plurality of non-energized poles are interspersed according to pole pitch; and said second rotor half including: (i) a second permanent magnet having a second polarity (S); (ii) a second plurality of permanent field poles that are energized by the second permanent magnet; and (iii) a second plurality of non-energized poles that are not energized by the second permanent magnet, wherein the second plurality of permanent field poles and the second plurality of non-energized poles are interspersed according to pole pitch, and the first and second plurality of permanent field poles are offset with respect to each other by one pole pitch; f) an electric field ring coil, wherein said first and second rotor halves are arranged on said rotor shaft with an axial distance between them; and g) a field coil being disposed into said space formed between said first and second rotor halves.
Claim 2
Dependent Claim
256 words
A hybrid-energized electric machine comprising: a) a magnetic yoke; b) a stator winding: c) a laminated stator core being disposed in the magnetic yoke and supporting the stator winding; d) a rotor shaft; e) a rotor being divided axially into a first rotor half and a second rotor half, forming a space therebetween, said first rotor half including: (i) a first permanent magnet having a first polarity (N); (ii) a first plurality of permanent field poles that are energized by the first permanent magnet; and (iii) a first plurality of non-energized poles that are not energized by the first permanent magnet, wherein the first plurality of permanent field poles and the first plurality of non-energized poles are interspersed according to pole pitch; and said second rotor half including: (i) a second permanent magnet having a second polarity (S); (ii) a second plurality of permanent field poles that are energized by the second permanent magnet; and (iii) a second plurality of non-energized poles that are not energized by the second permanent magnet, wherein the second plurality of permanent field poles and the second plurality of non-energized poles are interspersed according to pole pitch, and the first and second plurality of permanent field poles are offset with respect to each other by one pole pitch; f) an electric field ring coil, wherein said first and second rotor halves are arranged on said rotor shaft with an axial distance between them; and g) a field coil being disposed into said space formed between said first and second rotor halves.
Claim 3
Dependent Claim
26 words
The machine according to claim 1, wherein said first and second permanent magnets are disposed on a surface of said first and second rotor halves, respectively.
Claim 4
Dependent Claim
76 words
The machine according to claim 1, further comprising a plurality of receptacle holes provided in the laminated core of each rotor half and extending in a peripheral direction, wherein said first and second permanent magnets are disposed in the plurality of receptacle holes, wherein an arrangement and design of the plurality of receptacle holes is such that a magnetic short-circuit of the first and second permanent magnets inserted into the plurality of receptacle holes is prevented.
Claim 5
Dependent Claim
58 words
The machine according to claim 3, further comprising: a) a plurality of saturation segments; and b) a plurality of secant-like core parts of the laminated rotor core being adjacent to the plurality of receptacle holes towards a periphery of the rotor and being connected to neighboring non-energized pole parts only by means of the plurality of saturation segments.
Claim 6
Dependent Claim
25 words
The machine according to claim 3, further comprising a thermosetting plastic compound securing the first and second permanent magnets in the plurality of receptacle holes.
Claim 7
Dependent Claim
25 words
The machine according to claim 4, further comprising a thermosetting plastic compound securing the first and second permanent magnets in the plurality of receptacle holes.
Claim 8
Dependent Claim
21 words
The machine according to claim 1, further comprising a winding support on which the winding of the field coil is arranged.
Claim 9
Dependent Claim
37 words
The machine according to claim 7, further comprising a wall part, wherein the winding support is enclosed by means of the wall part on a peripheral side that corresponds to a peripheral side of the rotor halves.
Claim 10
Dependent Claim
38 words
The machine according to claim 8, wherein the winding support comprises a side wall that extends radially and said wall part on the peripheral side is connected in one piece to the side wall of the winding support.
Claim 11
Dependent Claim
19 words
The machine according to claim 9, wherein the winding support includes a U-shaped cross section in an axial direction.
Claim 12
Dependent Claim
38 words
The machine according to claim 1, wherein the first and second rotor halves and the field coil are designed as individual modules that can be handled independently of each other and can be mounted on the rotor shaft.
Claim 13
Dependent Claim
25 words
The machine according to claim 7, wherein the winding support is mounted on the rotor shaft in such a way that it is secured rotationally.
Claim 14
Dependent Claim
46 words
The machine according to claim 12, further comprising a plurality of axial projections on the winding support, and a plurality of corresponding recesses, wherein the plurality of axial projections engage in the plurality of corresponding recesses in the laminated cores of one or both rotor halves.
Claim 15
Dependent Claim
20 words
The machine according to claim 12, wherein the winding support is held on the rotor shaft by a force fit.
Claim 16
Dependent Claim
25 words
The machine according to claim 7, wherein the winding support and/or winding that is mounted on winding support is embedded in a thermosetting plastic compound.
References Cited (Backward Citations)
US3047755A
Cited
US3743873A
Cited
US4476408A
Cited
US4339679A
Cited
US4358697A
Cited
US4486679A
Cited
US5030867A
Cited
US5097166A
Cited
US5285563A
Cited
US5281879A
Cited
US5233248A
Cited
EP0620634A1
Cited
US5397975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |