GB1110340A - Improvements in dynamoelectric machines - Google Patents
Improvements in dynamoelectric machinesInfo
- Publication number
- GB1110340A GB1110340A GB3876765A GB3876765A GB1110340A GB 1110340 A GB1110340 A GB 1110340A GB 3876765 A GB3876765 A GB 3876765A GB 3876765 A GB3876765 A GB 3876765A GB 1110340 A GB1110340 A GB 1110340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- flux
- coil
- coils
- damping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
Abstract
1,110,340. Permanent - magnet alternators; securing coils. GARRETT CORPORATION. 10 Sept., 1965, No. 38767/65. Heading H2A. In a planar air-gap machine with axiallyspaced rotary field structures, one of the structures has flux-producing means permanently magnetized in the axial direction and another is magnetically passive, providing a flux return path, the armature winding comprising a coil wound around one of the field structures with a portion of it located in the air gap. As shown in Fig. 8, an axially-magnetized annular magnet or set of magnets 3 (e.g. of alloy or barium ferrite) is secured to an iron flux-return disc 2 mounted on a shaft 1; spaced along the shaft is a further iron disc 2<SP>1</SP> providing the return circuit for flux across the planar air gap. Preferably, the assembly 2, 3 is encased in a shell 6, 8 (with thickened hub 7) of copper or aluminium to provide damping; preferably, fan blades 10 extend from back plate 8. Disc 2<SP>1</SP> is similarly clad and may also have fan blades. (For low-speed machines, only the damping on 2<SP>1</SP> need be present). The damping on disc 2<SP>1</SP> may be constituted by forming the air gap face of the disc into a pattern of axiallydirected protuberances, and casting aluminium or alloy in the intervening spaces, the damping being continued around the edge and rear face, where fan blades are provided. The air gap face thus formed may be further covered by a thin sheet of magnetic material to collect and distribute the flux uniformly (Figs. 6, 7, not shown). A stator comprising two coils 22 is fitted around the assembly 2<SP>1</SP>, 14, 15. Each coil is wound from round wire, the wires of each layer being located in the grooves between wires of an adjacent layer; the winding is then bonded. The outer portions of the two coils may be mounted between a plate 29 and vertical bars 28 of non-magnetic material, Fig. 13. In alternative coil-mounting arrangements, two non-magnetic brackets, which may be combined in one piece, are cemented to the coil, and the assembly is supported in a jig for drilling mounting holes in the brackets (Figs. 14, 15, not shown); alternatively, a plastics mounting-block may be used instead of brackets. Preferably, the ends of the coils are curved, in the plane of disc 2<SP>1</SP>, to follow the circular contour of the disc. For a two-phase machine two coil sets at right angles are provided, and for three-phase, three sets at 60- degree intervals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3876765A GB1110340A (en) | 1965-09-10 | 1965-09-10 | Improvements in dynamoelectric machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3876765A GB1110340A (en) | 1965-09-10 | 1965-09-10 | Improvements in dynamoelectric machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1110340A true GB1110340A (en) | 1968-04-18 |
Family
ID=10405571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3876765A Expired GB1110340A (en) | 1965-09-10 | 1965-09-10 | Improvements in dynamoelectric machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1110340A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003034575A2 (en) * | 2001-10-18 | 2003-04-24 | Vlaamse Instelling Voor Technologisch Onderzoek (Vito) | An axial flux permanent magnet generator / motor |
WO2007031751A1 (en) * | 2005-09-15 | 2007-03-22 | Wee Keong Khoo | Reinforced discs for magnetic bearings and electrical machines |
-
1965
- 1965-09-10 GB GB3876765A patent/GB1110340A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003034575A2 (en) * | 2001-10-18 | 2003-04-24 | Vlaamse Instelling Voor Technologisch Onderzoek (Vito) | An axial flux permanent magnet generator / motor |
WO2003034575A3 (en) * | 2001-10-18 | 2003-12-18 | Vito | An axial flux permanent magnet generator / motor |
US7157829B2 (en) | 2001-10-18 | 2007-01-02 | Vlaamse Instelling Voor Technologisch Onderzoek (V.I.T.O) | Axial flux permanent magnet generator/motor |
WO2007031751A1 (en) * | 2005-09-15 | 2007-03-22 | Wee Keong Khoo | Reinforced discs for magnetic bearings and electrical machines |
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