CN205319913U - Dipolar asynchronous starting permanent magnet synchronous motor stator winding - Google Patents
Dipolar asynchronous starting permanent magnet synchronous motor stator winding Download PDFInfo
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- CN205319913U CN205319913U CN201521000653.6U CN201521000653U CN205319913U CN 205319913 U CN205319913 U CN 205319913U CN 201521000653 U CN201521000653 U CN 201521000653U CN 205319913 U CN205319913 U CN 205319913U
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Abstract
The utility model discloses a dipolar asynchronous starting permanent magnet synchronous motor stator winding, its characteristics are that the stator number of slots is 36 grooves, the number of poles is the dipolar, the number of phases is 3 looks, stator winding A, B, C is three symmetrical, 120 electrical degrees of mutual deviation, stator winding constitutes by 3 layers at the inslot, each layer all is an individual layer chain winding, the pitch of same layer line circle is the same, every coil number of turns of same layer line circle is also the same, the coil pitch and the number of turns on different layers all are inequality, there are 3 kinds of pitches and 3 kinds of numbers of turns respectively, total conductor number of every inslot all is the same. The utility model discloses an advantage does: three -phase winding is delta connection, and it is short that this kind of winding stator magnetic potential harmonic content is less than 2%, stator winding end portion, does not have back electromotive force's 3 times and 3 odd number times number of times harmonic circulating current during delta connection, adopts star - - - and delta connection starts, starts smoothly, and work is steady, the permanent magnetic energy reinforce of permanent magnet.
Description
Technical field
The utility model relates to a kind of motor alternating current winding, especially a kind of two pole asynchronous starting synchronous permanent-magnet motor machine stator windings.
Background technology
Without the need to speed governing occasion, the popularization of energy-saving electric machine is also of practical significance very much, asynchronous starting permanent magnet synchronous electric motivation is arisen at the historic moment with regard to this, but the cage-shaped structure of asynchronous starting permanent magnet synchronous electric motivation is different from common asynchronous machine, also there is permanent magnet in rotor simultaneously, therefore it is also poor to start the energy common asynchronous machine of force rate, and normal asynchronous is except the general Y-system of small power motor directly starts, all the other mostly are star-delta and start, permanent magnet synchronous electric motivation is often then Y-system, therefore starting current multiple is bigger when starting, especially two pole asynchronous starting permanent magnet synchronous electric motivations startups are more difficult, start and pull-in performance to improve two pole asynchronous starting permanent magnet synchronous electric motivations, there were many prioritization schemes in permanent magnet rotor structure in the past, do not go to relate at this, and it is long to there is stator winding end in stator winding at present, stator the harmonics of magnetic force is many, counter-electromotive force harmonic wave content height, in order to avoid counter-electromotive force in trilateral connection to produce circulation, Y-system can only be adopted to work, the outstanding problems such as star-delta method startup can not be adopted, limit the popularization of two pole asynchronous starting permanent magnet synchronous electric motivations as energy-saving electric machine, to this, optimize two pole asynchronous starting synchronous permanent-magnet motor machine stator windings, become an important improvement aspect.
Summary of the invention
The purpose of this utility model is to be optimized for two pole asynchronous starting synchronous permanent-magnet motor machine stator windings, overcomes current this kind of motor stator winding and only adopts Y-system, star-delta method thus can not be adopted to start, and stator winding end is long, stator winding the harmonics of magnetic force content is big, counter-electromotive force harmonic wave content is big, affect the problem such as startability and the permanent magnetic energy power of permanent magnet, invent a kind of two novel pole asynchronous starting synchronous permanent-magnet motor machine stator windings, this kind of winding end is short, stator the harmonics of magnetic force content is less than 2.0%, counter potential harmonic wave is not containing the harmonic wave of 3 times and the odd-multiple number of times of 3, during trilateral connection, without counter-electromotive force circulation in trilateral, star-delta starting method can be adopted, limiting starting current multiple, improve startability and pull-in performance, reduce permanent magnet eddy-current heating, effectively prevent from permanent magnet to lose efficacy to demagnetize.
The utility model is achieved like this, a kind of two pole asynchronous starting synchronous permanent-magnet motor machine stator windings, it is characterized in that: number of stator slots 36 groove, extremely several 2 poles, the number of phases 3 phase, stator winding A, B, C three-phase symmetrical, differ from 120 ° of electrical angles mutually, stator winding is formed by 3 layers in groove, each layer is all a kind of individual layer chain type winding, the pitch of same layer coil is identical, each coil turn of same layer coil is also identical, the coil pitch of different layers is all not identical with the number of turn, there are 3 kinds of pitches and 3 kinds of numbers of turn respectively, total conductor number in each groove is identical, coarse pitch coil pitch is Y1=1-16, middle pitch coil pitch Y2=1-10, little pitch coil pitch Y3=1-4, pitch coil ratio from big to small is 5:4:1, and often the coil of mutually large, medium and small pitch is all 6 circles, often has 18 circles mutually, parallel branch number a=1, and A phase winding is coarse pitch coil winding a1x1, middle pitch coil winding a2x2, little pitch coil winding a3x3The winding of these three kinds of pitches is in series, coarse pitch coil, pitch Y1=1-6, totally 6 circle, and often enclosing the number of turn is 5n circle, n=1,2,3 ... natural number, arranges as follows: 1-16,2-17,3-18; 36-21,35-20,34-19, from the 1st groove and the 19th groove outlet line, line end is labeled as a respectively1, x1, a1x1It is called coarse pitch coil winding, it is positioned at notch, namely the 3rd layer; Middle pitch coil, pitch Y2=1-10, totally 6 circle, often enclosing the number of turn is 4n circle, n=1,2,3 ... natural number, arranges as follows: 4-13,5-14,6-15,33-24,32-23,31-22; From the 4th groove and the 22nd groove outlet line, line end is labeled as a respectively2, x2, a2x2It is called middle pitch coil winding, it is positioned at groove middle level, namely the 2nd layer; Little pitch coil, pitch Y3=1-4, totally 6 circle, often enclosing the number of turn is 1n circle, n=1,2,3 ... natural number, arranges as follows: 7-10,8-11,9-12,30-27,29-26,28-25; From the 7th groove and the 25th groove outlet line, line end is labeled as a respectively3, x3, a3x3It is called little pitch coil winding, it is positioned at trench bottom, namely the 1st layer; A, B, C three-phase windings is symmetrical, differ from 120 ° of electrical angles mutually, B phase, C phase winding structure and the number of turn are completely identical with A phase winding, three-phase windings is trilateral connection, this kind of wound stator the harmonics of magnetic force content is less than 2%, without the odd-multiple times harmonic circulation of the 3 of counter-electromotive force times and 3 during trilateral connection, adopts star-delta to start.
Advantage of the present utility model is: parallel branch number a=1, avoid magnetic in permanent-magnet machine asymmetric cause parallel branch number a=2 time circulation, little pitch coil first embeds bottom land, pitch coil in the embedding of middle level, finally embed coarse pitch coil, coarse pitch coil is positioned at notch, the stator winding end of such three kinds of individual layer chain coils composition forms three three-dimensional end faces, substantially reduce the defect that two-pole machine general winding end is very long, tip lengths shortens 20%, this kind of wound stator mmf wave is close to sinusoidal simultaneously, the harmonics of magnetic force content is less than 2%, and counter-electromotive force does not have the harmonic wave of odd-multiple number of times of 3 times and 3 yet, therefore three-phase windings does not have circulation when being connected into trilateral, star-delta connection can be adopted to start, owing to magnetic potential sine is good, not only permanent magnet is produced eddy current little, permanent magnet magnetic ability maintains, and make the humorous wave resistance of rotor cage little, electric current is big, start, pull in improved performance, reach the object of invention.
Accompanying drawing explanation
Fig. 1 is stator winding coarse pitch coil layout drawing (A phase) of the present utility model.
Fig. 2 is pitch coil layout drawing in stator winding of the present utility model (A phase).
Fig. 3 is the little pitch coil layout drawing of stator winding of the present utility model (A phase).
Fig. 4 is stator winding trilateral connection schematic diagram of the present utility model.
Embodiment
For the purpose of clearer, it is described in more detail in conjunction with specific embodiments.
A kind of two pole asynchronous starting synchronous permanent-magnet motor machine stator windings, motor stator groove number is 36 grooves, and extremely number is 2 poles, the number of phases is 3 phases, and rotating speed is 3000 revs/min, and motor power is 55Kw, stator wire gauge be 2-Φ 1.3,8-1.4 and around, three is overlapping waded, every line of rabbet joint number 10, connection is 1 Δ, stator core cylindrical Φ 400mm, stator core inner circle Φ 225mm, stator core length 180mm, stator winding coil is arranged as shown in Figure 1
Figure 1A phase winding coarse pitch coil, Y1=1-16, totally 6 figure, often enclosing the number of turn is 5 circles, arranges as follows: 1-16,2-17,3-18; 36-21,35-20,34-19, from the 1st groove and the 19th groove outlet line, line end is labeled as a respectively1, x1,
Pitch coil in Fig. 2 A phase winding, Y2=1-10, totally 6 circle, often enclosing the number of turn is 4 circles, arranges as follows: 4-13,5-14,6-15,33-24,32-23,31-22; From the 4th groove and the 22nd groove outlet line, line end is labeled as a respectively2, x2,
The little pitch coil of Fig. 3 A phase winding, Y3=1-4, totally 6 circle, often enclosing the number of turn is 1 circle, arranges as follows: 7-10,8-11,9-12,30-27,29-26,28-25; From the 7th groove and the 25th groove outlet line, line end is labeled as a respectively3, x3, in the bottom of groove under little pitch coil, at the middle part of groove under middle pitch coil, at notch under coarse pitch coil, groove is formed three stackings around, turns ratio is followed successively by 5:4:1 from coarse pitch to little pitch, Fig. 1, Fig. 2, Fig. 3 only depicts the layout of A phase winding coil, B phase, C phase winding coil layout drawing omits and does not draw, three-phase A, B, C winding differs from 120 ° of electrical angles mutually, form three-phase symmetrical structure, therefore motor 36 groove is three layers, every line of rabbet joint number is all 5+4+1=10, the connection of three-phase windings is as shown in Figure 4, parallel branch number is 1, because the winding a that A phase winding is made up of three kinds of coils1x1, a2x2, a3x3, so the winding b that corresponding B phase winding is also made up of three kinds of coils1y1, b2y2, b3y3, the winding c that C phase winding is also made up of three kinds of coils1z1, c2z2, c3z3, wherein b1y1, b2y2, b3y3, c1z1, c2z2, c3z3Coil layout drawing omits, and not shown draws, and when therefore A, B, C three-phase symmetric winding is often in parallel, circuitry number is 1, trilateral connection is a as shown in Figure 41-x1-a2-x2-a3-x3-b1-y1-b2-y2-b3-y3-c1-z1-c2-z2-c3-z3-a1Form trilateral connection, from a1z3Tie point draws leading-out terminal mark A, from b1x3Tie point draws leading-out terminal mark B, from c1y3Tie point draws leading-out terminal mark C, during startup, then starts as common mouse cage asynchronous machine star-delta connection. Common pitch Y=1-14 double-layer lap around winding coefficient computation formula isCounter-electromotive force 3 subharmonic content can be obtained accordingly and reach 6.41%, very big circulation is had during trilateral connection, therefore trilateral connection can not be adopted, stator repeatedly the harmonics of magnetic force content be greater than 3.5%, and the utility model three-phase windings, by its deployment scenarios in groove, the universal calculation equation of its winding coefficient can be written as
Accordingly can analytical calculation go out its 3 times and 3 odd number multiple harmonic winding factor be zero, its harmonic wave total content is less than 2%, and harmonic wave content reduces 43.5%, thus this kind three stacking around the technique effect that reaches of stator winding be:
1. stator winding end is three-dimensional three end faces, is that Y=1-14 normal conventional double-layer lap winding tip lengths shortens 20% than pitch;
2. stator winding the harmonics of magnetic force content than pitch be Y=1-14 double-layer lap around, reduce 43.5%, beneficial temperature rise reduces, and permanent magnet eddy current reduces, and permanent magnetic energy power improves;
3. counter-electromotive force 3 times and 3 odd-multiple times harmonic winding coefficient be zero, three-phase windings trilateral connection, star-delta connection starts, and starting current is little, and permanent magnet degaussing effect is reduced by the ability that starts, and also makes the permanent magnetic energy power of permanent magnet improve;
4. stator magnetic potential sine improves, and makes the humorous wave resistance of rotor cage little, and electric current is big, and pull in improved performance.
Visible, three stackings of the present utility model are short around stator winding end, harmonic wave content is little, trilateral connection aspergillus ficuum, star-delta connection can be adopted, start, performance of pulling in is greatly improved, overcoming current two pole asynchronous starting permanent magnet synchronous electric motivations adopts pitch to be that the Y=1-14 common double stator winding end that repeatedly winding exists is excessively long, stator the harmonics of magnetic force is many, counter-electromotive force harmonic wave content height, in order to avoid counter-electromotive force in trilateral connection to produce circulation, Y-system can only be adopted to work, star-delta method startup work and poor performance of pulling in can not be adopted, thus limit two pole asynchronous starting permanent magnet synchronous electric motivations the outstanding technical problem such as apply, reach the object of invention.
Claims (1)
1. a pole asynchronous starting synchronous permanent-magnet motor machine stator winding, it is characterized in that: number of stator slots 36 groove, extremely several 2 poles, the number of phases 3 phase, stator winding A, B, C three-phase symmetrical, differ from 120 ° of electrical angles mutually, stator winding is formed by 3 layers in groove, each layer is all a kind of individual layer chain type winding, the pitch of same layer coil is identical, each coil turn of same layer coil is also identical, the coil pitch of different layers is all not identical with the number of turn, there are 3 kinds of pitches and 3 kinds of numbers of turn respectively, total conductor number in each groove is identical, coarse pitch coil pitch is Y1=1-16, middle pitch coil pitch Y2=1-10, little pitch coil pitch Y3=1-4, pitch coil ratio from big to small is 5:4:1, and often the coil of mutually large, medium and small pitch is all 6 circles, often has 18 circles mutually, parallel branch number a=1, and A phase winding is coarse pitch coil winding a1x1, middle pitch coil winding a2x2, little pitch coil winding a3x3The winding of these three kinds of pitches is in series, coarse pitch coil, pitch Y1=1-6, totally 6 circle, and often enclosing the number of turn is 5n circle, n=1,2,3 ... natural number, arranges as follows: 1-16,2-17,3-18; 36-21,35-20,34-19, from the 1st groove and the 19th groove outlet line, line end is labeled as a respectively1, x1, a1x1It is called coarse pitch coil winding, it is positioned at notch, namely the 3rd layer; Middle pitch coil, pitch Y2=1-10, totally 6 circle, often enclosing the number of turn is 4n circle, n=1,2,3 ... natural number, arranges as follows: 4-13,5-14,6-15,33-24,32-23,31-22; From the 4th groove and the 22nd groove outlet line, line end is labeled as a respectively2, x2, a2x2It is called middle pitch coil winding, it is positioned at groove middle level, namely the 2nd layer; Little pitch coil, pitch Y3=1-4, totally 6 circle, often enclosing the number of turn is 1n circle, n=1,2,3 ... natural number, arranges as follows: 7-10,8-11,9-12,30-27,29-26,28-25; From the 7th groove and the 25th groove outlet line, line end is labeled as a respectively3, x3, a3x3It is called little pitch coil winding, it is positioned at trench bottom, namely the 1st layer; A, B, C three-phase windings is symmetrical, differ from 120 ° of electrical angles mutually, B phase, C phase winding structure and the number of turn are completely identical with A phase winding, three-phase windings is trilateral connection, this kind of wound stator the harmonics of magnetic force content is less than 2%, without the odd-multiple times harmonic circulation of the 3 of counter-electromotive force times and 3 during trilateral connection, adopts star-delta to start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000653.6U CN205319913U (en) | 2015-12-07 | 2015-12-07 | Dipolar asynchronous starting permanent magnet synchronous motor stator winding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521000653.6U CN205319913U (en) | 2015-12-07 | 2015-12-07 | Dipolar asynchronous starting permanent magnet synchronous motor stator winding |
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| CN205319913U true CN205319913U (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521000653.6U Withdrawn - After Issue CN205319913U (en) | 2015-12-07 | 2015-12-07 | Dipolar asynchronous starting permanent magnet synchronous motor stator winding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375728A (en) * | 2015-12-07 | 2016-03-02 | 泰豪科技股份有限公司 | Two-pole asynchronous starting permanent-magnet synchronous motor stator winding |
| CN110571997A (en) * | 2019-09-18 | 2019-12-13 | 江苏富丽华通用设备股份有限公司 | Three-phase asynchronous motor stator winding turn number distribution method for fan |
| CN110832747A (en) * | 2017-07-04 | 2020-02-21 | 三菱电机株式会社 | Rotating electric machine and linear motor |
-
2015
- 2015-12-07 CN CN201521000653.6U patent/CN205319913U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375728A (en) * | 2015-12-07 | 2016-03-02 | 泰豪科技股份有限公司 | Two-pole asynchronous starting permanent-magnet synchronous motor stator winding |
| CN105375728B (en) * | 2015-12-07 | 2018-01-26 | 泰豪科技股份有限公司 | Two pole asynchronous starting permasyn morot stator winding |
| CN110832747A (en) * | 2017-07-04 | 2020-02-21 | 三菱电机株式会社 | Rotating electric machine and linear motor |
| CN110571997A (en) * | 2019-09-18 | 2019-12-13 | 江苏富丽华通用设备股份有限公司 | Three-phase asynchronous motor stator winding turn number distribution method for fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20180126 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20180126 |