CN101834507A - Brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in fixed ratio - Google Patents
Brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in fixed ratio Download PDFInfo
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- CN101834507A CN101834507A CN200910118989A CN200910118989A CN101834507A CN 101834507 A CN101834507 A CN 101834507A CN 200910118989 A CN200910118989 A CN 200910118989A CN 200910118989 A CN200910118989 A CN 200910118989A CN 101834507 A CN101834507 A CN 101834507A
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Abstract
The invention provides a brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in a fixed ratio. A motor stator is formed by stacking a plurality of magnetic conduction silicon steel sheets; a plurality of 15-time winding slots are arranged on the magnetic conduction silicon sheets; the motor stator consists of X, Y and Z phase windings, each phase has integral phase groups between 2 and 4 and each phase group has 5 winding slots; the motor rotor is formed in such a way that a plurality of arc shaped magnets are pasted to a round magnetic conduction iron ring at equal intervals in sequence, the radial magnetic pole of each arc shaped magnet is opposite to the radial poles of adjacent arc shaped magnets on left and right; and each arc shaped magnet stands for a magnetic pole, and the quantity of the magnetic poles of the motor rotor is the multiple of 14 or 16, therefore the purpose of reducing the instant turning torque of a motor can be achieved.
Description
[technical field]
The present invention relates to a kind of plural pole pair and groove and count the brushless direct-current motor structure of fixed proportion, be meant a kind of pause structure of torque of motor that reduces especially.
[background technology]
Brush-less permanent magnetic formula motor rotor is to be made of a plurality of magnetic poles, and each camber magnet is fixed on the round iron ring of a magnetic conduction, and the magnet radial poles of each camber magnet camber magnet adjacent with the left and right sides is all opposite.Stator is stacked into by a plurality of magnetic conductivity silicon steel sheets, on each sheet magnetic conductivity silicon steel sheet a plurality of winding slots is set, and twines copper cash (enamelled wire) on the winding slot in regular turn.In the motor running process,, be referred to as a torque (cogging torque) because slot effect when rotor rotates with respect to stator, can produce a kind of epitrochanterian power that acts on.Torque is the most obvious in the situation of motor during at low-speed running, can produce noise, the seismism of motor, must see through the mode of restriction motor minimum speed, avoid the problem that shakes.
In U.S. Pat 4774428 a cases, to utilize the quantity of stator winding groove be 3 (2n+1) and the quantity of motor rotor magnetic pole is 3 (2n+1)+1 to disclose three-phase permanent formula motor, or 3 (2n+1)-1, and the winding slot number of each phase-group is the design of 2n+1, be used for reducing the motor torque of pausing, obtain maximum motor running efficient.
The disclosed winding mode of this US4774428, for the quantity of stator winding groove is that the winding slot number of 3 (2n+1) and each phase place is 2n+1, so one of winding mode of whole stator, be that adjacent 2n+1 winding slot formed a phase-group, so that can exist a phase place to have only the situation of a phase-group.For example during n=7, the quantity of stator winding groove is 45, and promptly each phase-group comprises 15 winding slots, each phase place can only have corresponding 46 utmost points of a phase-group or the rotor of 44 utmost points, and this is not that symmetry is exerted oneself for the motor force-output shaft, can cause the motor bearing unbalance stress, be not ideal designs.
In addition, in U.S. Pat 6242822B1, once pointed out to utilize the star-like dislocation winding mode of stator with a stator poles that magnetic cycle is interim, depart from an integer, the merchant that the quantity of just utilizing the stator winding groove and the quantity of motor rotor pole pair are divided by (two opposite camber permanent magnetic irons of adjacent pole constitute a pole pair), it is a non-integer, and the star-like dislocation winding mode of six kinds of outs of phase on the cooperation stator, when motor rotation, can be on stator the increase of multiple, be that mutual counteracting reduces on the contrary, reduce a torque of motor whereby.But the merchant that the quantity of the quantity of stator winding groove and motor rotor pole pair is divided by is that a non-integral scope is too extensive and unrealistic.And star-like wrong winding mode complexity very is different with general winding mode, by hand or the degree of difficulty height that winds the line of machinery, and the manufacturing cost height.And another part U.S. Pat 4774428 cases, the quantity that has promptly proposed the stator winding groove as far back as 1988 is 3 (2n+1) or the design of 3 (2n+1)-1, the merchant that the quantity of the quantity of its stator winding groove and motor rotor magnetic pole is divided by, it also is a non-integer, so the quantity of the stator winding groove of brush-less permanent magnetic formula motor and the quantity of motor rotor magnetic pole, the merchant of being divided by is a non-integer, has been disclosed technology.
[summary of the invention]
The object of the present invention is to provide a kind of plural pole pair and groove to count the brushless direct-current motor structure of fixed proportion, can reduce the motor torque of pausing really.
A kind of plural pole pair of the present invention and groove are counted the brushless direct-current motor structure of fixed proportion, have motor rotor and motor stator, it is characterized in that: this motor stator is stacked into by a plurality of magnetic conductivity silicon steel sheets, being provided with a plurality of on the magnetic conductivity silicon steel sheet is the winding slot of 15 multiples, motor stator is made up of three phase place coilings of X Y Z, the phase-group of the integer of each phase place promising 2～4, the winding slot number of each phase-group is 5 grooves; Motor rotor is on average pasted in regular turn on a circular magnetic conduction iron ring by a plurality of camber magnet and is formed, and the magnet radial poles of the camber magnet that each camber magnet is adjacent with the left and right sides is all opposite, a camber magnet is represented a magnetic pole, and the quantity of magnetic pole is 14 or 16 multiple.
Wherein, the quantity ratios of the quantity of this motor rotor magnetic pole and stator winding groove can be 14n: 15n, and n is the integer more than or equal to 2.
Wherein, the quantity ratios of the quantity of this motor rotor magnetic pole and stator winding groove can be 16n: 15n, and n is the integer more than or equal to 2.
Wherein, the phase-group of same phase place is non-conterminous mutually, and the phase-group of same phase place is apart from one another by 10 winding slots.
Wherein, in the phase-group of each same phase place, the direction of winding difference of adjacent stator winding groove, when still adjacent wire casing did not belong to the phase-group of same phase, its direction of winding was identical.
Wherein, in the phase-group of each same phase place, when the direction of winding of first winding slot when being clockwise, the direction of winding of second winding slot is that the direction of winding of counterclockwise the 3rd winding slot is for clockwise, the direction of winding of the 4th winding slot is that the direction of winding of the 5th winding slot is clockwise counterclockwise.
Wherein, in the phase-group of each same phase place, when the direction of winding of first winding slot when being counterclockwise, the direction of winding of second winding slot is that the direction of winding of clockwise the 3rd winding slot is for counterclockwise, the direction of winding of the 4th winding slot is that the direction of winding of the 5th winding slot is counterclockwise clockwise.
A kind of plural pole pair of the present invention and groove are counted the brushless direct-current motor structure of fixed proportion, and its advantage and effect are: motor configuration of the present invention can effectively reduce the motor torque of pausing.
[description of drawings]
Figure 1 shows that the STRUCTURE DECOMPOSITION figure of the embodiment of the invention.
Figure 2 shows that the motor configuration vertical view of the embodiment of the invention.
Figure 3 shows that the expanded view of Fig. 2.
Concrete label is as follows among the figure:
The round iron ring of 1---motor rotor 10---camber magnet 11---
2---motor stator 20---silicon steel sheet 21---winding slot
22---line body
[embodiment]
Please consult shown in Figure 1ly simultaneously, the present invention mainly is made up of motor rotor 1 and motor stator 2.Wherein, motor rotor 1 includes the round iron ring 11 of a plurality of camber magnet 10 and a magnetic conduction, each camber magnet 10 is fixed on the round iron ring 11, and the magnet radial poles of the camber magnet 10 that each camber magnet 10 is adjacent with its left and right sides is all opposite, wherein, a camber magnet 10 is represented a magnetic pole;
Said motor rotor 1 number of magnetic poles and stator 2 winding slots 21 quantity are than being two kinds of 14n: 15n and 16n: 15n, and wherein, n is for greater than 2 or equal 2 integer.
Please consult shown in Fig. 2,3, said motor rotor 1 number of magnetic poles and stator 2 winding slots 21 quantity are than two kinds of 14n: 15n and 16n: 15n again, and wherein, n is the integer more than or equal to 2.Promptly
During n=2, motor configuration is 28 utmost points, 30 grooves and 32 utmost points, 30 grooves;
During n=3, motor configuration is 42 utmost points, 45 grooves and 48 utmost points, 45 grooves;
During n=4, motor configuration is 56 utmost points, 60 grooves and 64 utmost points, 60 grooves;
By that analogy.
The embodiment of the invention is during with n=3, motor configuration is that the motor winding mode of 42 utmost points, 45 grooves describes, for convenience of description, round motor rotor 1 is expanded into rectilinear (as shown in Figure 3) with motor stator 2 structures, it is to be made up of three phase places of XYZ, each phase place has 3 phase-group, the X phase place comprises X1, X2, three phase-group of X3, the Y phase place comprises Y1, Y2, three phase-group of Y3, the Z phase place comprises Z1, Z2, three phase-group of Z3, each phase-group comprises 5 adjacent winding slots 21, and synchronous phase-group is apart from one another by 10 winding slots 21.With the X phase place is example, the winding mode of X phase place is begun by the X1 phase-group, the X1 phase-group since No. 1 winding slot 21 with line body 22 (as enamelled wire) clockwise direction coiling (+), X12 winding slot 21 is with coiling (-) counterclockwise, X13 winding slot 21 wind the line in a clockwise direction (+), X14 winding slot 21 is with coiling (-) counterclockwise, and X15 winding slot 21 winds the line (+) in a clockwise direction, finishes first phase-group X1 coiling of X phase place.Because of the phase-group coiling of same phase place need be apart from one another by 10 winding slots 21, therefore line body 22 (as enamelled wire) skips to first winding slot 21 (i.e. No. 16 winding slots) of X2 phase-group, coiling (+) in a clockwise direction again, X217 winding slot 21 is with counterclockwise coiling (-), X218 winding slot 21 is with clockwise coiling (+), X219 winding slot 21 is with counterclockwise coiling (-), and X220 winding slot 21 is finished second phase-group X2 coiling of X phase place with clockwise coiling (+).The line body 22 (as enamelled wire) of X phase place is pulled to first winding slot 21 (i.e. No. 31 winding slots) of X3 phase-group more then, coiling (+) in a clockwise direction again, X332 winding slot 21 is with counterclockwise coiling (-), X333 winding slot 21 is with clockwise coiling (+), X334 winding slot 21 is with counterclockwise coiling (-), the X335 winding slot is with clockwise coiling (+), and the coiling of the X1 of X phase place, X2, X3 phase-group is afterwards promptly finished.And the Y1 of Y phase place, Y2, Y3 and Z phase place organize the winding mode of X1, X2, X3 phase-group of the winding mode of Z1, Z2, Z3 such as X phase place identical, so repeat no more, the ordering of its phase-group is X1 → Y1 → Z1 → X2 → Y2 → Z2 → X3 → Y3 → Z3.
By above-mentioned design, thereby make motor rotor 1 comprise the round iron ring 11 of 42 magnet and a magnetic conduction, totally 42 magnetic poles.Each arc-shaped magnet 10 is fixed on the round iron ring 11 of magnetic conduction, and the magnet radial poles of each arc-shaped magnet 10 arc-shaped magnet 10 adjacent with the left and right sides is all opposite.
Therefore, motor stator of the present invention is stacked into by a plurality of magnetic conductivity silicon steel sheets, and being provided with a plurality of on the magnetic conductivity silicon steel sheet is the winding slot of 15 multiples, and motor stator is made up of three phase place coilings of X Y Z, the phase-group of the integer of each phase place promising 2～4, the winding slot number of each phase-group is 5 grooves; Motor rotor is on average pasted in regular turn on a circular magnetic conduction iron ring by a plurality of camber magnet and is formed, and the magnet radial poles of the camber magnet that each camber magnet is adjacent with the left and right sides is all opposite, wherein, a camber magnet is represented a magnetic pole, the quantity of magnetic pole is 14 or 16 multiple, reaches really whereby to reduce the pause purpose of torque of motor.
Claims (7)
1. plural pole pair and groove are counted the brushless direct-current motor structure of fixed proportion, have motor rotor and motor stator, it is characterized in that: this motor stator is to be stacked into by a plurality of magnetic conductivity silicon steel sheets, the winding slot of 15 multiples is set on the magnetic conductivity silicon steel sheet, motor stator also is made up of the coiling of three phase places of X Y Z, the phase-group of the integer of each phase place promising 2～4, the winding slot number of each phase-group is 5 grooves; And motor rotor is on average pasted in regular turn by a plurality of camber magnet and is formed on a circular magnetic conduction iron ring, and the magnet radial poles of the camber magnet that each camber magnet is adjacent with the left and right sides is all opposite, a camber magnet is represented a magnetic pole, and the quantity of magnetic pole is 14 or 16 multiple.
2. plural pole pair according to claim 1 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: the quantity ratios of the quantity of this motor rotor magnetic pole and stator winding groove can be 14n: 15n, and n is the integer more than or equal to 2.
3. plural pole pair according to claim 1 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: the quantity ratios of the quantity of this motor rotor magnetic pole and stator winding groove can be 16n: 15n, and n is the integer more than or equal to 2.
4. plural pole pair according to claim 1 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: the phase-group of same phase place is non-conterminous mutually, and the phase-group of same phase place is apart from one another by 10 winding slots.
5. plural pole pair according to claim 1 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: in the phase-group of each same phase place, the direction of winding difference of adjacent stator winding groove, when but adjacent wire casing did not belong to the phase-group of same phase, its direction of winding was identical.
6. plural pole pair according to claim 5 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: in the phase-group of each same phase place, when the direction of winding of first winding slot when being clockwise, the direction of winding of second winding slot is that the direction of winding of counterclockwise the 3rd winding slot is clockwise, the direction of winding of the 4th winding slot is that the direction of winding of the 5th winding slot is clockwise counterclockwise.
7. plural pole pair according to claim 5 and groove are counted the brushless direct-current motor structure of fixed proportion, it is characterized in that: in the phase-group of each same phase place, when the direction of winding of first winding slot when being counterclockwise, the direction of winding of second winding slot is that the direction of winding of clockwise the 3rd winding slot is counterclockwise, the direction of winding of the 4th winding slot is that the direction of winding of the 5th winding slot is counterclockwise clockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101189895A CN101834507B (en) | 2009-03-11 | 2009-03-11 | Brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in fixed ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101189895A CN101834507B (en) | 2009-03-11 | 2009-03-11 | Brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in fixed ratio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834507A true CN101834507A (en) | 2010-09-15 |
| CN101834507B CN101834507B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101189895A Expired - Fee Related CN101834507B (en) | 2009-03-11 | 2009-03-11 | Brushless direct-current motor structure with a plurality of magnetic pole pairs and slots in fixed ratio |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163902A (en) * | 2011-03-23 | 2011-08-24 | 高林发 | Staggered multi-driving direct-current brushless motor |
| CN102201707A (en) * | 2011-06-02 | 2011-09-28 | 姚乐洁 | Direct current machine |
| JP2013099109A (en) * | 2011-10-31 | 2013-05-20 | Asmo Co Ltd | Dc motor, and winding method for dc motor |
| WO2018076989A1 (en) * | 2016-10-27 | 2018-05-03 | 东莞市翰硕塑胶有限公司 | Dc three-phase brushless motor for household fans |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774428A (en) * | 1987-05-15 | 1988-09-27 | Synektron Corporation | Compact three-phase permanent magnet rotary machine having low vibration and high performance |
| CN1178609A (en) * | 1995-11-20 | 1998-04-08 | 昆腾公司 | D. C. brushless motor with minimized net radial forces and low cogging torque |
| US7105973B2 (en) * | 2003-07-21 | 2006-09-12 | Kollmorgen Corporation | Highly efficient permanent magnet brushless motor |
| CN101018002B (en) * | 2006-12-28 | 2013-03-27 | 李平 | Small three-phase high-performance square wave permanent magnetic DC low-speed brushless motor |
-
2009
- 2009-03-11 CN CN2009101189895A patent/CN101834507B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163902A (en) * | 2011-03-23 | 2011-08-24 | 高林发 | Staggered multi-driving direct-current brushless motor |
| CN102163902B (en) * | 2011-03-23 | 2013-09-11 | 曾绍洪 | Staggered multi-driving direct-current brushless motor |
| CN102201707A (en) * | 2011-06-02 | 2011-09-28 | 姚乐洁 | Direct current machine |
| CN102201707B (en) * | 2011-06-02 | 2013-04-03 | 姚乐洁 | Direct current machine |
| JP2013099109A (en) * | 2011-10-31 | 2013-05-20 | Asmo Co Ltd | Dc motor, and winding method for dc motor |
| WO2018076989A1 (en) * | 2016-10-27 | 2018-05-03 | 东莞市翰硕塑胶有限公司 | Dc three-phase brushless motor for household fans |
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| Publication number | Publication date |
|---|---|
| CN101834507B (en) | 2012-11-28 |
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