CN101783535A - 20-pole three-phase permanent magnetic synchronous traction machine stator - Google Patents
20-pole three-phase permanent magnetic synchronous traction machine stator Download PDFInfo
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- CN101783535A CN101783535A CN 201010133147 CN201010133147A CN101783535A CN 101783535 A CN101783535 A CN 101783535A CN 201010133147 CN201010133147 CN 201010133147 CN 201010133147 A CN201010133147 A CN 201010133147A CN 101783535 A CN101783535 A CN 101783535A
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Abstract
The invention relates to a 20-pole three-phase permanent magnetic synchronous traction machine stator which comprises stator windings and a stator iron core and is characterized in that the stator iron core is a ring distributed with 21 teeth along the circumferential direction and 21 grooves are arranged among the teeth; the stator windings comprise three phases of A, B and C, each phase of stator windings is provided with 7 windings, each winding is wound on one tooth, three phases of stator windings are provided with 21 windings altogether which are respectively wound on the 21 teeth of the stator iron core, and the front end of each phase of stator windings and the front end of the other phase of stator windings mutually form a 120-degree mechanical angle; and in the three phases of stator windings, the front ends of the A-phase stator windings and the tail ends of the C-phase stator windings are in the same groove, the front ends of the B-phase stator windings and the tail ends of the A-phase stator windings are in the same groove, and the front ends of the C-phase stator windings and the tail ends of the B-phase stator windings are in the same groove. Compared with the prior art, the invention has the advantages of short stator winding end part, no mutual overlapping among the windings, small copper consumption, low manufacture cost and suitability for the machineroom-less structure of a narrow wellhole.
Description
Technical field
The present invention relates to a kind of traction machine stator, refer 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 object of the present invention is to provide 20 pole three-phase permanent magnetic synchronous traction machine stators, 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 present invention 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 present invention 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 invention;
Fig. 2 is a developed winding diagram of the present invention
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
As shown in Figure 1,20 pole three-phase permanent magnetic synchronous traction machine stators of the present invention 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 |
|---|---|---|---|
| CN 201010133147 CN101783535A (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnetic synchronous traction machine stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133147 CN101783535A (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnetic synchronous traction machine stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101783535A true CN101783535A (en) | 2010-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010133147 Pending CN101783535A (en) | 2010-03-19 | 2010-03-19 | 20-pole three-phase permanent magnetic synchronous traction machine stator |
Country Status (1)
| Country | Link |
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| CN (1) | CN101783535A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471014Y (en) * | 2001-04-03 | 2002-01-09 | 江苏白雪电器股份有限公司 | Brushless dc. motor |
| CN2664262Y (en) * | 2003-07-27 | 2004-12-15 | 北京三易同创新技术有限公司 | Low-speed external rotor permanent magnet synchronous motor |
| CN2814787Y (en) * | 2005-07-28 | 2006-09-06 | 胡锦孙 | AC energy-saving permanent-magnet brushless non-gear synchronous elevator tracting machine |
| CN101227108A (en) * | 2007-11-19 | 2008-07-23 | 哈尔滨工业大学 | Polyphase synchronous machine of concentrated winding structure |
| CN201639455U (en) * | 2010-03-19 | 2010-11-17 | 梁昌勇 | 20-pole three-phase permanent magnet synchronous tractor stator |
-
2010
- 2010-03-19 CN CN 201010133147 patent/CN101783535A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2471014Y (en) * | 2001-04-03 | 2002-01-09 | 江苏白雪电器股份有限公司 | Brushless dc. motor |
| CN2664262Y (en) * | 2003-07-27 | 2004-12-15 | 北京三易同创新技术有限公司 | Low-speed external rotor permanent magnet synchronous motor |
| CN2814787Y (en) * | 2005-07-28 | 2006-09-06 | 胡锦孙 | AC energy-saving permanent-magnet brushless non-gear synchronous elevator tracting machine |
| CN101227108A (en) * | 2007-11-19 | 2008-07-23 | 哈尔滨工业大学 | Polyphase synchronous machine of concentrated winding structure |
| CN201639455U (en) * | 2010-03-19 | 2010-11-17 | 梁昌勇 | 20-pole three-phase permanent magnet synchronous tractor stator |
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Application publication date: 20100721 |