GB2325350A - Hexagonal conductors in stator windings for electric machines - Google Patents
Hexagonal conductors in stator windings for electric machines Download PDFInfo
- Publication number
- GB2325350A GB2325350A GB9809643A GB9809643A GB2325350A GB 2325350 A GB2325350 A GB 2325350A GB 9809643 A GB9809643 A GB 9809643A GB 9809643 A GB9809643 A GB 9809643A GB 2325350 A GB2325350 A GB 2325350A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stator
- electric machines
- hexagonal
- conductors
- stator windings
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
Abstract
The stator (6) for electric machines comprises, in conventional fashion, axially extending grooves (12) for accommodating the stator winding (11), the latter being formed by profile wire (16) having a hexagonal cross section. The flat sides of the wires rest close against one another, so that no cavities are formed and the groove filling is improved as compared with conventional stator windings. An alternator application is disclosed.
Description
1 Stator for electric machines State of the art 2325350 The invention
relates to a stator for electric machines according to the generic type of the main claim. In known stator windings, the profile of the wire is round, so that there is always an intermediate space between the wires. This has the disadvantage that the groove cross section is not optimally filled. Single-wire windings with rectangular or square profile conductors, which increase the fill factor of the grooves, have already been used in electric machines (DE-AS 12 03 374). However, these solutions are very costly, since the conductors are individually fitted and connected.
Advantages of the invention In contrast, the stator for electric machines according to the invention having the characterising features of the main claim offers the advantage that the use of space in the stator groove is improved in cases where entire coils are fitted. This also increases the efficiency of the generator. It has also been found that the improved use of space in the groove considerably reduces the subsequent groove closure work. Furthermore, unproved heat dissipation to the groove surface results from the small intermediate spaces. Further advantages of the invention will be clear from the following description and drawings.
2 5 Drawings An embodiment of the invention is reproduced in the drawings and in the following description. In the drawings, Figure 1 is a perspective view of a
2 generator and Figure 2 shows a section of a stator pack with a groove for the stator winding.
Description of the embodiment
In the machine according to Figure 1, the basic structure of a threephase clawpole generator is shown. The reference I designates the slipring bearing bracket, 2 designates the rectifier and 3 a power diode of the rectifier. Also visible is an excitation diode 4 and controller, brush holder and carbon brushes, indicated by the reference 5. In addition, the drawing shows the stator 6, the rotor 7 and the fan 8, the belt pulley 9 and the drive bearing bracket 10.
Fig. 2 shows a greatly enlarged section of the stator pack 6 and in particular a cross section of a groove 12 for the stator winding 11 extending axially on the is internal circumference of the laminated sheet pack 6. The groove 12 is lined laterally with insulating paper 13 and is provided at the groove opening 15 with groove sealing paper 14.
In accordance with the invention, the winding wire for the coils of the stator winding I I manufactured from a plurality of closed turns is formed by a profile wire 16 having a hexagonal cross section, as many wires 16 as possible being fitted in each groove 12 with their flat sides 16a almost abutting, so that no or no significant intermediate spaces are produced. In this manner, substantially improved groove filling is attained as compared with conventional wires having a circular cross section, in which cavities are always formed between the wires. There is no need to implement any modifications to the existing winding machines as compared with the use of conventional wires. It has also been found that the groove closure work can be significantly reduced as compared with conventional designs.
3
Claims (3)
1. Stator for electric machines, more particularly for generators of.. motor vehicles, with axially extending grooves (12) for accommodating the stator winding (11), which is formed by coils having a plurality of closed turns of a winding wire, characterised in that the profile of the winding wire (16) is hexagonal.
2. Stator according to claim 1, characterised in that the winding profile wires (16) rest against one another with their flat sides (16a) almost Without an intermediate space.
3.
A stator for electric machines substantially as herein described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29708729U DE29708729U1 (en) | 1997-05-16 | 1997-05-16 | Stand for electrical machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9809643D0 GB9809643D0 (en) | 1998-07-01 |
| GB2325350A true GB2325350A (en) | 1998-11-18 |
| GB2325350B GB2325350B (en) | 1999-07-28 |
Family
ID=8040447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9809643A Expired - Fee Related GB2325350B (en) | 1997-05-16 | 1998-05-06 | Stator for electric machines |
Country Status (6)
| Country | Link |
|---|---|
| BR (1) | BR9801633A (en) |
| DE (1) | DE29708729U1 (en) |
| ES (1) | ES2143950B1 (en) |
| FR (1) | FR2763439B1 (en) |
| GB (1) | GB2325350B (en) |
| IT (1) | IT1303071B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009027467A1 (en) * | 2009-07-06 | 2011-01-13 | Robert Bosch Gmbh | Electric machine and method for producing the electrical machine with at least one winding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3343451A1 (en) * | 1983-12-01 | 1985-06-13 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Cable for a superconducting magnet |
| EP0244923A2 (en) * | 1986-05-08 | 1987-11-11 | Century Electric, Inc. | Method of winding a field coil with flattened round wire and field coil produced by said method |
| JPH03222305A (en) * | 1990-01-29 | 1991-10-01 | Toshiba Corp | Helical coil |
| JPH05151835A (en) * | 1991-11-27 | 1993-06-18 | Mitsubishi Electric Corp | Oxide superconductive wire material and manufacture thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6500897A (en) * | 1964-02-03 | 1965-08-04 | ||
| US4743082A (en) * | 1984-01-04 | 1988-05-10 | Kei Mori | Light conducting optical fiber bundle |
| US4988055A (en) * | 1988-05-25 | 1991-01-29 | Nippondenso Co., Ltd. | Coil assembly for polygonal wire |
| JP2611419B2 (en) * | 1989-03-15 | 1997-05-21 | 株式会社デンソー | Multi-coil winding method with different wire diameter |
| JPH03265437A (en) * | 1989-04-13 | 1991-11-26 | Sanyo Electric Co Ltd | Armature coil for motor, manufacture thereof and molding jig therefor |
| DE9017866U1 (en) * | 1990-09-24 | 1992-07-30 | Dipl.-Ing. Dr. Ernst Vogelsang Gmbh & Co Kg, 4352 Herten, De | |
| FR2675523A1 (en) * | 1991-04-22 | 1992-10-23 | Scetauroute | Stay cable, in particular for cable-stayed bridge, consisting of a bundle of identical strands each formed by several wires (filaments) |
| ES1018732Y (en) * | 1991-06-26 | 1992-09-16 | Mecanismos Auxiliares Industriales, S.A. M.A.I.S.A. | PERFECTED ELECTRIC CABLE. |
-
1997
- 1997-05-16 DE DE29708729U patent/DE29708729U1/en not_active Expired - Lifetime
-
1998
- 1998-05-04 FR FR9805601A patent/FR2763439B1/en not_active Expired - Fee Related
- 1998-05-06 GB GB9809643A patent/GB2325350B/en not_active Expired - Fee Related
- 1998-05-07 IT IT98MI000993 patent/IT1303071B1/en active IP Right Grant
- 1998-05-14 BR BR9801633A patent/BR9801633A/en not_active Application Discontinuation
- 1998-05-14 ES ES9801012A patent/ES2143950B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3343451A1 (en) * | 1983-12-01 | 1985-06-13 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Cable for a superconducting magnet |
| EP0244923A2 (en) * | 1986-05-08 | 1987-11-11 | Century Electric, Inc. | Method of winding a field coil with flattened round wire and field coil produced by said method |
| JPH03222305A (en) * | 1990-01-29 | 1991-10-01 | Toshiba Corp | Helical coil |
| JPH05151835A (en) * | 1991-11-27 | 1993-06-18 | Mitsubishi Electric Corp | Oxide superconductive wire material and manufacture thereof |
Non-Patent Citations (3)
| Title |
|---|
| Dialog Abstract Accession No 004320168 & DE003343451A (KERNFORSCHUNGSZENT) * |
| Dialog Abstract Accession No 008826183 & JP030222305A (TOSHIBA) * |
| Dialog Abstract Accession No 009536085 & JP05151835A (MITSUBISHI) * |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1303071B1 (en) | 2000-10-23 |
| BR9801633A (en) | 1999-03-30 |
| GB9809643D0 (en) | 1998-07-01 |
| ES2143950A1 (en) | 2000-05-16 |
| FR2763439B1 (en) | 2001-02-09 |
| GB2325350B (en) | 1999-07-28 |
| ITMI980993A1 (en) | 1999-11-07 |
| DE29708729U1 (en) | 1998-09-10 |
| FR2763439A1 (en) | 1998-11-20 |
| ES2143950B1 (en) | 2000-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20090506 |