CN103001365A - Double-layer fractional-slot winding structure of permanent-magnet synchronous motor - Google Patents
Double-layer fractional-slot winding structure of permanent-magnet synchronous motor Download PDFInfo
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- CN103001365A CN103001365A CN2011102685283A CN201110268528A CN103001365A CN 103001365 A CN103001365 A CN 103001365A CN 2011102685283 A CN2011102685283 A CN 2011102685283A CN 201110268528 A CN201110268528 A CN 201110268528A CN 103001365 A CN103001365 A CN 103001365A
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Abstract
Disclosed is a double-layer fractional-slot winding structure of a permanent-magnet synchronous motor. A double-layer structured winding is arranged in a stator iron core and is a fractional-slot distribution winding, each pair of poles forms two branches in each phase, and each branch at least comprises a first element and a second element which are opposite in winding direction. Span of the first element is equal to three slot pitches, span of the second element is equal to four slot pitches, turns of the first element is one second of those of the second element, the first element and windings of other phases share a same slot, and the first element and the second element are spaced by a slot pitch. The fractional-slot distribution winding can be automatically off line, phase-to-phase insulation can be conveniently added, and the double-layer fractional-slot winding structure has the advantages of good counter potential waveforms, small toothed slot torque, low uniformly used copper for ends, and high power density. Compared with conventional fractional-slot concentric type fractional-slot windings, the double-layer fractional-slot winding structure is small in end size, few in copper usage, uniform in magnetic loop, low in noise and particularly applicable to batch production of high-performance high-voltage alternating-current motor windings having high technical requirements.
Description
Technical field
The present invention relates to electricity field, relate in particular to three phase alternating current motor, particularly a kind of double-layer fractional slot permanent magnet synchronous motor winding structure.
Background technology
In the prior art, the three phase alternating current motor of batch production generally adopts single layer winding or concentric type two layer winding.Wherein the concentric type two layer winding always exists length apart from winding, and every phase winding is less to the excitatory coupling ratio of all magnetic poles, and the end size of motor is large, many with copper, the shortcomings such as manufacturing cost and material cost height; And the ability that the single layer winding motor suppresses harmonic wave a little less than, the shortcoming such as the form factor of the back-emf of motor is little, and harmonic loss and torque fluctuations are large, and the motor number of teeth is many, and electromagnetic coupled is inhomogeneous, and electromagnetic noise is obvious.
Summary of the invention
The object of the present invention is to provide a kind of double-layer fractional slot permanent magnet synchronous motor winding structure, described this double-layer fractional slot permanent magnet synchronous motor winding structure will solve in the prior art that three phase alternating current motor winding electric magnetic coupling is inhomogeneous, electromagnetic noise obviously, the material cost is high, suppress that the harmonic wave ability is weak, the counter potential waveform coefficient is little, harmonic loss and torque fluctuations are large, move jiggly technical problem.
This double-layer fractional slot permanent magnet synchronous motor winding structure of the present invention, comprise and be provided with the double-decker winding in the stator core, described double-decker winding is the fractional-slot distributed winding, wherein, every pair of utmost point forms two branch roads of every phase, every branch road is comprised of first element and second element at least, the direction of winding of described the first element and described the second element is opposite, the span of the first element is 3 slot pitches, the span of the second element is 4 slot pitches, the number of turn of the first element is half of the number of turn of the second element, and the first element and all the other phase windings be groove altogether, the second element and the first element 1 slot pitch of being separated by.
Further, described the second element is arranged on separately in the radial core groove.
Further, described winding all coils parts number is 2/3 of corresponding stator punching groove number.
Operation principle of the present invention is: in the two layer winding, the back-emf direction that all elements of homophase produce is identical, and three phase windings are symmetrical, realize the reasonable electromagnetic coupled of electric machine rotor; The short distance winding of different spans has produced the magnetic linkage effect of Concentrical winding, the span of the second element is than short 1 slot pitch of the outer coil element in the conventional fractional-slot Concentrical winding, not only saved end copper, and relatively conventional fractional-slot Concentrical winding has improved the ability of motor inhibition harmonic wave; Number of slots is not the integral multiple of number of pole-pairs, and the teeth groove of motor is one of four parts of conventional integer groove layer winding, moves more steady; In lower line process, with all coils element of coil winding machine difference coiling three phase windings, rear with on the three-phase winding inserter all coils element phase-splitting of three phase windings being drawn in the armature slot successively, the efficient that rolls off the production line of the efficient that rolls off the production line and conventional one way winding electric machine is close first.
The present invention and prior art are compared, and its effect is actively with obvious.The present invention is symmetrical with double-deck three phase windings, can satisfy the reasonable electromagnetic coupled of electric machine rotor, guarantees the coupling that every phase winding is excitatory to all magnetic poles.The short distance winding of different spans has produced the magnetic linkage effect of Concentrical winding, the span of the second element is than short 1 slot pitch of the outer coil element in the conventional fractional-slot Concentrical winding, not only saved end copper, and relatively conventional fractional-slot Concentrical winding has improved the ability of motor inhibition harmonic wave, relatively conventional integer groove winding Effective Raise the form factor of winding back emf, reduced harmonic loss and the torque fluctuations of motor; Number of slots is not the integral multiple of number of pole-pairs, and the teeth groove of motor is one of four parts of conventional integer groove layer winding, moves more steady.The invention solves in the prior art that three phase alternating current motor winding electric magnetic coupling is inhomogeneous, electromagnetic noise obviously, the material cost is high, suppress that the harmonic wave ability is weak, the counter potential waveform coefficient is little, harmonic loss and torque fluctuations are large, move jiggly technical problem.
Description of drawings
Fig. 1 is the expansion schematic diagram of double-layer fractional slot permanent magnet synchronous motor winding structure of the present invention.
Fig. 2 is the radially schematic diagram of double-layer fractional slot permanent magnet synchronous motor winding structure of the present invention.
Embodiment
Embodiment 1
As depicted in figs. 1 and 2, double-layer fractional slot permanent magnet synchronous motor winding structure of the present invention, comprise stator core 100, be provided with the double-decker winding in the described stator core 100, described double-decker winding is the fractional-slot distributed winding, in the present embodiment, the number of pole-pairs of winding is 4, and phase place is A, B and C three-phase, the parts number of winding is 36, the sequence number of element is followed successively by 1 to 36, and wherein, every pair of utmost point forms two branch roads of every phase, every branch road is comprised of 2 elements at least, form a branch road such as element 1 and element 2, the direction of winding of element 1 and element 2 is opposite, and the span of element 1 is 3 slot pitches, the span of element 2 is 4 slot pitches, the number of turn of element 1 is half of the number of turn of element 2, every element 1 in mutually all with all the other windings in mutually groove altogether, element 1 and element 21 slot pitch of being separated by.
Further, element 2 is arranged on separately in the radial core groove.
Further, be provided with two component outlines in any one radial core groove.
Further, the number of teeth of stator punching is 36, and all windings have large and small 24 elements.Described winding all coils parts number is 2/3 of corresponding stator punching groove number.
The operation principle of present embodiment is: in the two layer winding, the back-emf direction that all elements of homophase produce is identical, and three phase windings are symmetrical, realize the reasonable electromagnetic coupled of electric machine rotor; The short distance winding of different spans has produced the magnetic linkage effect of Concentrical winding, the span of element 2 is than short 1 slot pitch of the outer coil element in the conventional fractional-slot Concentrical winding, not only saved end copper, and relatively conventional fractional-slot Concentrical winding has improved the ability of motor inhibition harmonic wave; Number of slots is not the integral multiple of number of pole-pairs, and the teeth groove of motor is one of four parts of conventional integer groove layer winding, moves more steady; In lower line process, with all coils element of coil winding machine difference coiling three phase windings, rear with on the three-phase winding inserter three-phase all coils element being drawn in the armature slot successively, the efficient that rolls off the production line of the efficient that rolls off the production line and conventional one way winding electric machine is close first.
Claims (3)
1. double-layer fractional slot permanent magnet synchronous motor winding structure, described double-decker winding is the fractional-slot distributed winding, it is characterized in that: every pair of utmost point forms two branch roads of every phase, every branch road is comprised of first element and second element at least, the direction of winding of described the first element and described the second element is opposite, the span of the first element is 3 slot pitches, the span of the second element is 4 slot pitches, the number of turn of the first element is half of the number of turn of the second element, the first element and all the other phase windings be groove altogether, the second element and the first element 1 slot pitch of being separated by.
2. double-layer fractional slot permanent magnet synchronous motor winding structure as claimed in claim 1, it is characterized in that: described the second element is arranged on separately in the radial core groove.
3. double-layer fractional slot permanent magnet synchronous motor winding structure as claimed in claim 1, it is characterized in that: winding all coils parts number is 2/3 of corresponding stator punching groove number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102685283A CN103001365A (en) | 2011-09-13 | 2011-09-13 | Double-layer fractional-slot winding structure of permanent-magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102685283A CN103001365A (en) | 2011-09-13 | 2011-09-13 | Double-layer fractional-slot winding structure of permanent-magnet synchronous motor |
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| CN103001365A true CN103001365A (en) | 2013-03-27 |
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| CN2011102685283A Pending CN103001365A (en) | 2011-09-13 | 2011-09-13 | Double-layer fractional-slot winding structure of permanent-magnet synchronous motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723027A (en) * | 2014-01-02 | 2014-04-16 | 东南大学 | Stepless speed regulating system for magnetic gear motor rotation |
| CN104333192B (en) * | 2014-10-23 | 2017-03-22 | 华域汽车电动系统有限公司 | 60-slot 8-electrode double-layer fractional-slot winding structure |
| CN106787336A (en) * | 2016-12-30 | 2017-05-31 | 卧龙电气集团股份有限公司 | The pole ultra-high efficient motor of 36 groove of three-phase 4 |
| CN108959819A (en) * | 2018-07-27 | 2018-12-07 | 国家电网有限公司 | A kind of the unit motor choosing method and device of unconventional winding electric machine |
| CN109792181A (en) * | 2016-09-27 | 2019-05-21 | 罗伯特·博世有限公司 | Stator for motor |
| CN113113980A (en) * | 2021-04-13 | 2021-07-13 | 刘晓艳 | Motor slot-staggering split-phase combined stator winding and winding harmonic slot-staggering coefficient calculation method |
| CN113839497A (en) * | 2021-08-26 | 2021-12-24 | 天津工业大学 | Design method of low-harmonic double-three-phase fractional slot permanent magnet synchronous motor |
| CN114337036A (en) * | 2022-02-22 | 2022-04-12 | 小米汽车科技有限公司 | Flat wire stators and motors |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02311160A (en) * | 1989-05-26 | 1990-12-26 | Toshiba Corp | Two sides linear motor |
| CN101567595A (en) * | 2009-05-27 | 2009-10-28 | 泰豪科技股份有限公司 | Composite voltage regulating three-phase permanent magnet electricity generator |
| CN102025248A (en) * | 2009-09-18 | 2011-04-20 | 德昌电机(深圳)有限公司 | Motor used for power system of electric vehicle |
| CN202260733U (en) * | 2011-09-13 | 2012-05-30 | 华域汽车电动系统有限公司 | Double-layer fractional slot permanent magnet synchronous motor winding structure |
-
2011
- 2011-09-13 CN CN2011102685283A patent/CN103001365A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02311160A (en) * | 1989-05-26 | 1990-12-26 | Toshiba Corp | Two sides linear motor |
| CN101567595A (en) * | 2009-05-27 | 2009-10-28 | 泰豪科技股份有限公司 | Composite voltage regulating three-phase permanent magnet electricity generator |
| CN102025248A (en) * | 2009-09-18 | 2011-04-20 | 德昌电机(深圳)有限公司 | Motor used for power system of electric vehicle |
| CN202260733U (en) * | 2011-09-13 | 2012-05-30 | 华域汽车电动系统有限公司 | Double-layer fractional slot permanent magnet synchronous motor winding structure |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723027A (en) * | 2014-01-02 | 2014-04-16 | 东南大学 | Stepless speed regulating system for magnetic gear motor rotation |
| CN103723027B (en) * | 2014-01-02 | 2016-02-24 | 东南大学 | The continuous speed regulation system of magnetic gear motor transmission |
| CN104333192B (en) * | 2014-10-23 | 2017-03-22 | 华域汽车电动系统有限公司 | 60-slot 8-electrode double-layer fractional-slot winding structure |
| CN109792181A (en) * | 2016-09-27 | 2019-05-21 | 罗伯特·博世有限公司 | Stator for motor |
| CN106787336A (en) * | 2016-12-30 | 2017-05-31 | 卧龙电气集团股份有限公司 | The pole ultra-high efficient motor of 36 groove of three-phase 4 |
| CN106787336B (en) * | 2016-12-30 | 2019-07-23 | 卧龙电气集团股份有限公司 | 36 slot of three-phase, 4 pole motor |
| CN108959819A (en) * | 2018-07-27 | 2018-12-07 | 国家电网有限公司 | A kind of the unit motor choosing method and device of unconventional winding electric machine |
| CN113113980A (en) * | 2021-04-13 | 2021-07-13 | 刘晓艳 | Motor slot-staggering split-phase combined stator winding and winding harmonic slot-staggering coefficient calculation method |
| CN113839497A (en) * | 2021-08-26 | 2021-12-24 | 天津工业大学 | Design method of low-harmonic double-three-phase fractional slot permanent magnet synchronous motor |
| CN113839497B (en) * | 2021-08-26 | 2023-11-21 | 天津工业大学 | A design method for low harmonic dual three-phase fractional slot permanent magnet synchronous motor |
| CN114337036A (en) * | 2022-02-22 | 2022-04-12 | 小米汽车科技有限公司 | Flat wire stators and motors |
| CN114337036B (en) * | 2022-02-22 | 2022-11-18 | 小米汽车科技有限公司 | Flat wire stators and motors |
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Application publication date: 20130327 |