WO2008068503B1 - Axial flux electrical machines - Google Patents
Axial flux electrical machinesInfo
- Publication number
- WO2008068503B1 WO2008068503B1 PCT/GB2007/004690 GB2007004690W WO2008068503B1 WO 2008068503 B1 WO2008068503 B1 WO 2008068503B1 GB 2007004690 W GB2007004690 W GB 2007004690W WO 2008068503 B1 WO2008068503 B1 WO 2008068503B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- machine according
- pole support
- cores
- machine
- support unit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
An axial flux electrical machine having a rotor rotatable about an axis and the machine comprising at least one metallic pole support unit (10) arranged to have mounted thereon a plurality of cores (34) of magnetiseable material, such that the pole support unit (10) does not substantially electromagnetically link the cores; wherein the pole support unit (10) is provided in at least a region of the axis (14) and/or in a circumferential region of the machine radially displaced from the axis, wherein the material of the or each pole support unit (10) does not surround the cores; and wherein the force exerted by the or each pole support unit (10) on each core is generally in a radial plane of the machine and applied to the core within a length (L), in an axial direction of the machine, of each core (34).
Claims
1. An axial flux electrical machine having a housing and a rotor 5 rotatable about an axis and the machine comprising at least one metallic pole support unit arranged to have mounted thereon a plurality of cores of magnetiseable material, such that the pole support unit does not substantially electromagnetically link the cores; wherein
10 i: when a rotating shaft comprises the pole support unit, the pole support unit supports each core along a face which is transverse to a radius of the machine in a region of an axis of the machine; and / or ii: when the pole support unit is attached to the housing of 15 the machine, the pole support unit supports each core along a face which is transverse to a radius of the machine in a region of the circumference of the machine. wherein the pole support unit does not provide an electrical path around the cores, alone or in conjunction with the housing; and 20 wherein the force exerted by the or each pole support unit on each core is generally in a radial plane of the machine and applied to the core within a length, in an axial direction of the machine, of each core.
25 2. A machine according to claim 1 in which each of the cores comprises a plurality of discrete laminations.
3. A machine according to claim 2 in which the height of each lamination within the core is substantially equal. 30 37
4. A machine according to claim 2 or 3 in which the width of the laminations varies within the core.
5. A machine according to claim 4 in which the width varies substantially linearly from a narrow end to a wider end.
6. A machine according to any of claims 2 to 5 in which the laminations are insulated from one another.
7. A machine according to claim 1 in which the cores are fabricated from a Soft Magnetic Composite (SMC) .
8. A machine according to any of the preceding claims in which the cores are mounted on a face generally transverse to a radius of the machine on at least one of the pole support units.
9. A machine according to any preceding claim in which at least winding is wound around each of the cores .
10. A machine according to any preceding claim in which the pole support unit comprises a plate having a plurality of substantially flat faces each of which is transverse to a radius of the machine.
11. A machine according to claim 10 in which each of the flat faces comprises an attachment means arranged to attach a core to the pole support unit.
12. A machine according to claim 11 in which the attachment means comprises a threaded bore.
13. A machine according to any preceding claim in which the cores are bolted to the pole support unit.
14. A machine according to any preceding claim in which a further pole support unit is provided in either the region of the axis or in the circumferential region which is not occupied by the first pole support unit.
15. A machine according to any preceding claim in which the pole support unit comprises a plurality of slots each comprising a face in an end region thereof on which a core is mounted.
16. A machine according to claim 15 in which the slots within the pole support unit are open at one end thereof.
17. A machine according to claim 16 in which the open end of the slots is provided at end thereof adjacent an outer circumference of the pole support unit.
18. A machine according to claim 16 in which the open end of the slots is provided at an end thereof adjacent the axis of the machine.
19. A machine according to any preceding claim in which each core is I shaped in plan.
20. A machine according to any preceding claim in which cores have connected thereto a magnetic flux enhancing member.
21. A machine according to claim 20 in which the magnetic flux enhancing member is fabricated from any of the following: iron, Soft
Magnetic Composite (SMC) . 39
22. A machine according to claim 20 or 21 in which each of the cores on the rotating shaft is connected to the magnetic flux enhancing member.
23. A machine according to any of claims 20 to 22 in which each of the cores on the stator is connected to the magnetic flux enhancing member.
24. A machine according to any preceding claim which comprises a plurality of rotors .
25. A machine according to claim 24 in which the rotors are all arranged about the axis.
26. A machine according to any preceding claim which comprises a plurality of stators.
27. A machine according to claim 26 in which the stators are all arranged about the axis.
28. A machine according to any preceding claim in which any one stator or rotor comprises a single pole support unit.
29. A machine according to claim 28 in which each core is arranged within the pole support unit such that the pole support unit lies along substantially a central region of the core.
30. A machine according to any preceding claim in which at least one stator and/or rotor comprises a plurality of pole support units. 40
31. A machine according to claim 30 in which at least one stator and/or rotor comprises two pole support units.
32. A machine according to claim 31 in which each core is arranged within the pole support units such that each of the two pole support units is arranged at end region of the cores .
33. A machine according to any preceding claim which is any one of the following: a permanent magnet machine; an induction motor machine; a switched reluctance motor machine.
34. A machine according to any of claims 1 to 33 which comprises two rotors arranged on either side of a stator.
35. A machine according to claim 34 which is a permanent magnet machine.
36. A machine according to claim 34 or 35 which comprises a first and a second flux enhancing member each having a plurality of magnets mounted thereon and being arranged about the axis such that the faces of the flux enhancing members on which the magnets are mounted face toward one another, the flux enhancing members and the magnets each providing a rotor, between the two flux enhancing members there is provided a stator comprising the pole support unit, and at least one coil being wound around each of the cores within the pole support unit.
37. A machine according to any of claims 1 to 33 which comprises two stators arranged either side of a rotor.
38. A machine according to claim 37 which comprises two pole support units and a first and second flux enhancing member each having a 41
plurality of cores connected thereto and being arranged about the axis, each of the cores having at least one coil wound therearound and being mounted upon one of the pole support units, between the two flux enhancing members there is provided a rotor arranged to rotate about the axis and comprising a plurality of magnets.
39. A machine according to claim 37 or 39 which comprises a permanent magnet machine.
40. A machine according to claim 37 which comprises four pole support units and a first and a second flux enhancing member each having a plurality of cores connected thereto and being arranged about the axis, each of the cores having at least one coil wound therearound and being mounted upon one of the pole support units, between the two flux enhancing members there is provided a rotor comprising a flux enhancing member at a central region thereof having mounted on either side thereof a plurality of cores, each mounted upon one of the pole support units and having at least one coil wound therearound.
41. A machine according to claim 40 which comprises an induction machine .
42. A machine according to claims 1 to 33 which comprises a single stator and a single rotor.
43. A machine according to claim 42 in which comprises two pole support units and in which the stator comprises a flux enhancing member having mounted thereon a plurality of cores, each core having wound therearound at least one coil and being mounted on one of the pole support units and in which the rotor also comprises a flux enhancing member having mounted thereon a plurality of cores, each core having at 42
least one coil wound therearound and being mounted upon the other of the pole support units, wherein the rotor and the stator are arranged such that the cores of the rotor and the stator are adjacent one another.
44. A machine according to claim 43 which is an induction machine.
45. A machine according to claim 37 which comprises three pole support units and in which each stator comprises a flux enhancing member having mounted thereon a plurality of cores, each core having at least one coil wound therearound and being mounted upon one of the pole support units, the stators being arranged on the axis such that the cores face on another, the rotor being mounted between the stators and comprising the third pole support unit having mounted thereon a plurality of cores.
46. A machine according to claim 45 which is a switched reluctance machine.
47. A machine according to claim 42 which comprises two pole support units and in which the stator comprises a flux enhancing member having mounted thereon a plurality of cores, each core having wound therearound at least one coil and being mounted on one of the pole support units and in which the rotor also comprises a flux enhancing member having mounted thereon a plurality of cores, each core being mounted on the second of the pole support units, wherein the rotor and the stator are arranged such that the cores of the rotor and the stator are adjacent one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07848444A EP2132857A2 (en) | 2006-12-07 | 2007-12-07 | Axial flux electrical machines |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0624449.5 | 2006-12-07 | ||
| GBGB0624449.5A GB0624449D0 (en) | 2006-12-07 | 2006-12-07 | Axial flux machine |
| GB0700240.5 | 2007-01-08 | ||
| GBGB0700240.5A GB0700240D0 (en) | 2006-12-07 | 2007-01-08 | Axial flux machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2008068503A2 WO2008068503A2 (en) | 2008-06-12 |
| WO2008068503A3 WO2008068503A3 (en) | 2008-08-07 |
| WO2008068503B1 true WO2008068503B1 (en) | 2008-10-02 |
Family
ID=37711714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB2007/004690 WO2008068503A2 (en) | 2006-12-07 | 2007-12-07 | Axial flux electrical machines |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2132857A2 (en) |
| GB (2) | GB0624449D0 (en) |
| WO (1) | WO2008068503A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014103415U1 (en) * | 2014-07-24 | 2015-10-27 | Ebm-Papst St. Georgen Gmbh & Co. Kg | electric motor |
| RU2589730C1 (en) * | 2015-07-29 | 2016-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный технологический университет" (ФГБОУ ВПО "КубГТУ") | Three-input axial generator plant |
| RU2633359C1 (en) * | 2017-01-11 | 2017-10-12 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Stabilized three-input axial generator plant |
| CN110838764A (en) * | 2018-08-16 | 2020-02-25 | 奥的斯电梯公司 | Motor stator assembly, synchronous motor and passenger transportation device |
| EP3940932A4 (en) * | 2019-08-26 | 2022-06-08 | Midea Welling Motor Technology (Shanghai) Co., Ltd | Motor and fan |
| EP4122087A4 (en) * | 2020-03-18 | 2024-04-10 | David Calley | Electrical machine having shaped soft metal composite components with axial and radial airgaps |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866321A (en) * | 1985-03-26 | 1989-09-12 | William C. Lamb | Brushless electrical machine for use as motor or generator |
| US6037696A (en) * | 1993-12-29 | 2000-03-14 | Samot Engineering (1992) Ltd. | Permanent magnet axial air gap electric machine |
| JP3702825B2 (en) * | 2001-09-07 | 2005-10-05 | 日産自動車株式会社 | Stator support structure for rotating electrical machines |
| KR100649404B1 (en) * | 2001-11-29 | 2006-11-27 | 야마하하쓰도키 가부시키가이샤 | Axial gap type dynamo-electric machine |
| DE10253072A1 (en) * | 2002-11-07 | 2004-05-27 | Brose Fahrzeugteile Gmbh & Co. Kg, Coburg | Component with coils forming part of e.g. permanent magnet motor drive for vehicle actuator, has carrier with radially-projecting bridges and insertion sections for coils |
-
2006
- 2006-12-07 GB GBGB0624449.5A patent/GB0624449D0/en not_active Ceased
-
2007
- 2007-01-08 GB GBGB0700240.5A patent/GB0700240D0/en not_active Ceased
- 2007-12-07 EP EP07848444A patent/EP2132857A2/en not_active Withdrawn
- 2007-12-07 WO PCT/GB2007/004690 patent/WO2008068503A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008068503A3 (en) | 2008-08-07 |
| GB0624449D0 (en) | 2007-01-17 |
| GB0700240D0 (en) | 2007-02-14 |
| EP2132857A2 (en) | 2009-12-16 |
| WO2008068503A2 (en) | 2008-06-12 |
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