CN201639455U - 20-pole three-phase permanent magnet synchronous tractor stator - Google Patents
20-pole three-phase permanent magnet synchronous tractor stator Download PDFInfo
- Publication number
- CN201639455U CN201639455U CN2010201549780U CN201020154978U CN201639455U CN 201639455 U CN201639455 U CN 201639455U CN 2010201549780 U CN2010201549780 U CN 2010201549780U CN 201020154978 U CN201020154978 U CN 201020154978U CN 201639455 U CN201639455 U CN 201639455U
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- stator winding
- phase
- stator
- head end
- pole
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- Expired - Fee Related
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Abstract
The utility model relates to a 20-pole three-phase permanent magnet synchronous tractor stator which comprises stator windings and a stator core. The 20-pole three-phase permanent magnet synchronous tractor stator is characterized in that the stator core is a ring which is provided with 21 teeth along the circumferential direction; 21 grooves are arranged among the teeth; the stator windings comprise an A phase stator winding, a B phase stator winding and a C phase stator winding; each phase stator winding comprises 7 coils; each coil is wound on one tooth; the 21 coils of the three phase stator windings are respectively wounded on the 21 teeth of the stator core; a 120-degree mechanical angle is formed between the head end of each phase stator winding and the head end of another phase stator winding; the head end of the A phase stator winding and the tail end of the C phase stator winding share one groove; the head end of the B phase stator winding and the tail end of the A phase stator winding share one groove; and the head end of the C phase stator winding and the tail end of the B phase stator winding share one groove. Compared with the prior art, the 20-pole three-phase permanent magnet synchronous tractor stator has the advantages that the end part of the stator winding is short, the windings can not be mutually overlapped, copper loss is small, and the manufacture cost is low, and the 20-pole three-phase permanent magnet synchronous tractor stator can be applicable to the machine room-less structure of a narrow well.
Description
Technical field
The utility model relates to a kind of traction machine stator, refers in particular to 20 pole three-phase permanent magnetic synchronous traction machine stators.
Background technology
Present 20 pole three-phase permanent magnetic synchronous traction machine stator grooves have respectively: 45 grooves, 72 grooves, 90 grooves, and for 45 groove structures, winding pitch y=2,72 groove structures, winding pitch y=4,90 groove structures, winding pitch y=5.Obviously, these winding pitches y＞1 exists winding overhang to overlap mutually, makes stator winding end long, copper loss is big, and problems such as manufacturing cost height are more seriously because stator end is oversize, the traction machine axial dimension just can't reduce, and for no machine room, narrow hoistway space is used very difficulty.
Summary of the invention
The purpose of this utility model is to provide 20 pole three-phase permanent magnetic synchronous traction machine stators, and stator winding end is short, and winding can not overlap mutually, and copper loss is little, low cost of manufacture, and, go for the no machine room structure of narrow hoistway.
The utility model is achieved in that and comprises stator winding, stator core, its special feature is that stator core is along circumferentially being distributed with 21 teeth, stator winding is by A, B, C three phase compositions, every phase stator winding has 7 coils, each coil is wrapped on the tooth, totally 21 coil branches of threephase stator winding is wrapped on 21 teeth of stator core, the head end of each phase stator winding with another mutually the stator winding head end be in 120 the degree mechanical angles, the A phase stator winding head end of above-mentioned threephase stator winding and C be the same groove of stator winding tail end mutually, B phase stator winding head end and A be the same groove of stator winding tail end mutually, and C phase stator winding head end and B be the same groove of stator winding tail end mutually.
Because number of poles 2p=20, embody and face mutually that electrical degree is between two grooves: α=10 * 360 ÷ 21=171.43
Advantage
20 pole three-phase permanent magnetic synchronous traction machine stators that the utility model proposes have following advantage:
1, because the rotor number of poles is 20, and number of stator slots is 21, pole span τ=Z/2p=21/20=1.05 groove, (obviously, chording factor is near 1 for (1.05-1)=8.57 of τ-y)=171.43, chording factor ky=cos (8.57/2)=0.9972 for short distance angle β=α.
2 each coil all on a tooth, i.e. pitch y=1, winding can not overlap mutually, the winding overhang size is little, copper loss is little, low cost of manufacture.
3 winding overhang sizes are little, and the permanent magnetic synchronous traction machine axial dimension can obtain compression, and the no machine room that makes traction machine be used for narrow hoistway space becomes possibility.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a developed winding diagram of the present utility model
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
As shown in Figure 1,20 pole three-phase permanent magnetic synchronous traction machine stators of the present utility model comprise stator winding 1, stator core 2, its special feature is that stator core 2 circumferentially is distributed with 21 teeth 3 for the edge, form 21 grooves 4 between tooth and the tooth, stator winding 1 is by A, B, C threephase stator winding is formed, every phase stator winding has 7 coils, each coil is wrapped on the tooth, totally 21 coil branches of threephase stator winding is wrapped on 21 teeth 3 of stator core 2, the head end of each phase stator winding with another mutually the stator winding head end be in 120 the degree mechanical angles, be equivalent to 7 grooves at interval, the A phase stator winding head end of above-mentioned threephase stator winding and C be the same groove of stator winding tail end Z mutually, B phase stator winding head end and A be the same groove of stator winding tail end X mutually, and C phase stator winding head end and B be the same groove of stator winding tail end Y mutually.
The present embodiment introduction be the stator of outer-rotor structure, the design according to the utility model provides also can be implemented on the stator of inner rotor core.
Claims (1)
1. pole three-phase permanent magnetic synchronous traction machine stator, comprise stator winding, stator core, it is characterized in that stator core is along the ring that circumferentially is distributed with 21 teeth, between the tooth 21 grooves, stator winding is by A, B, C three phase compositions, every phase stator winding has 7 coils, each coil is wrapped on the tooth, totally 21 coil branches of threephase stator winding is wrapped on 21 teeth of stator core, the head end of each phase stator winding with another mutually the stator winding head end be in 120 the degree mechanical angles, the A phase stator winding head end of above-mentioned threephase stator winding and C be the same groove of stator winding tail end mutually, B phase stator winding head end and A be the same groove of stator winding tail end mutually, and C phase stator winding head end and B be the same groove of stator winding tail end mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201549780U CN201639455U (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnet synchronous tractor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201549780U CN201639455U (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnet synchronous tractor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639455U true CN201639455U (en) | 2010-11-17 |
Family
ID=43083961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201549780U Expired - Fee Related CN201639455U (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnet synchronous tractor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783535A (en) * | 2010-03-19 | 2010-07-21 | 梁昌勇 | 20-pole three-phase permanent magnetic synchronous traction machine stator |
-
2010
- 2010-03-19 CN CN2010201549780U patent/CN201639455U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783535A (en) * | 2010-03-19 | 2010-07-21 | 梁昌勇 | 20-pole three-phase permanent magnetic synchronous traction machine stator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130319 |