CN202094723U - Fractional-slot double winding structure of servo permanent-magnet synchronous motor - Google Patents
Fractional-slot double winding structure of servo permanent-magnet synchronous motor Download PDFInfo
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- CN202094723U CN202094723U CN2010205501865U CN201020550186U CN202094723U CN 202094723 U CN202094723 U CN 202094723U CN 2010205501865 U CN2010205501865 U CN 2010205501865U CN 201020550186 U CN201020550186 U CN 201020550186U CN 202094723 U CN202094723 U CN 202094723U
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- 238000004804 winding Methods 0.000 title claims abstract description 60
- 230000001360 synchronised Effects 0.000 title claims abstract description 10
- 101700071148 A1X1 Proteins 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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- 239000004020 conductor Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
The utility model relates to a fractional-slot double winding structure of a servo permanent-magnet synchronous motor. The fractional-slot double winding structure is characterized in that the structure has 24 stator slots, 10 poles, and 3 phases, the slot number of each pole and each phase is 4/5 fraction; a stator winding is designed into two sets of three-phase symmetrical windings; the windings of the same phase in the two sets are connected in series, and are introduced out in a star shape connection mode. The first set of the windings are double lap windings with unequal turns, each phase has 8 loops, the turn ratio is 1:2, three phases has 24 loops, and the pitch is 2. The second set of the windings are single-layer windings with the pitch being 2 and the turn ratio being 1, and each phase has 2 loops, three phases has 6 loops, and the slot fullness is equal. Compared with the magnetic potential harmonic of a conventional winding stator, the stator magnetic potential harmonic is reduced by 49.5% by the double winding structure. The ripple torque of the motor is small, the efficiency is high, and the vibration is weak. The output rated torque is raised by 5%, the temperature rise is reduced by 10 degrees, and the output characteristic of the speed regulation is greatly enhanced compared with a conventional winding.
Description
Technical field
The utility model relates to a kind of electric machine structure, specifically a kind of servo permanent magnet synchronous motor fractional-slot double-winding structure.
Background technology
Servo permanent magnet synchronous motor development is very fast, but permanent magnet motor has slot effect, and the ripple torque is big, the harmonic effects of controlled frequency converter of while etc., little at the low regime nominal torque, in order to improve this situation, mainly set about improving from two magnetic fields, one is that the harmonic field amplitude of rotor permanent magnetism is reduced, one is that the harmonics of magnetic force amplitude that stator winding is formed reduces as far as possible, can significantly improve the moment of torsion of low regime like this, efficient improves, and speed governing and output characteristic are improved.The present invention is optimized design from stator winding special construction aspect.
Summary of the invention
The purpose of this utility model just provides a kind of servo permanent magnet synchronous motor fractional-slot double-winding structure.
The harmonics of magnetic force content of its formation is less, to improve the nominal torque of servo permanent magnet synchronous motor in low regime, raises the efficiency, and improves the characteristic of the speed governing and the output of this motor.
The utility model is achieved like this, the stator winding of motor is designed to double-winding structure, and all three phase windings of symmetry of two covers are promptly arranged, and the same phase winding of two cover windings is in series, and star connection is drawn then.The first cover winding is the two windings that change that do not wait circle, and the turn ratio is 1: 2, and every have 8 to enclose mutually, and every phase turn ratio is 12 circles that have, and the turn ratio is 26 circles that have, and 3 24 enclose mutually.The second cover winding is the single layer winding that waits circle, and the turn ratio is 1, every phase 2 circles, and 36 enclose mutually totally, and strict position relation is arranged between the two cover windings, and the moment of span of all coils all is 2.
Winding construction of the present utility model, after the first cover winding is lowered in the stator slot earlier, the following again second cover winding, the technology tradition realizes easily, according to its turn ratio relation, the equal turn numbers in the motor stator slot, copper factor equates, in the magnetic potential that two cover windings form, 5,7,11,13,17,19 subharmonic content are all minimum, obviously improved efficient, improved the characteristic of the speed governing and the output of motor, particularly during low regime, because the minimizing of ripple moment of torsion is obvious, low speed output nominal torque improves, stationarity is improved, and reaches the purpose of utility model.
Description of drawings
Fig. 1 is that the first cover winding of the present utility model is arranged winding diagram.
Fig. 2 is that the second cover winding of the present utility model is arranged winding diagram.
Fig. 3 is double winding star connection figure of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further servo 11kW permanent magnet synchronous motor, number of stator slots is 24 grooves, and number of poles is 10 utmost points, and the number of phases is 3 phases, star connection.
As shown in Figure 1, be that the first cover winding of the present utility model is arranged winding diagram, number of stator slots is 24 grooves, and number of poles is 10 utmost points, and the number of phases is 3 phases, and every extremely every phase groove number is a mark 4/5.Only draw the 1st cover winding A1X1 of A phase of Fig. 1 arranges winding diagram, has 8 circle windings, i.e. coil 1-3,
6-8,11-13,
16-18,
Coil saves square and is 2, and from left to right the numbers of turn distribution of 8 circles was pressed the turn ratio 1: 2: 2: 2: 1: 2: 2: 2, first of B phase is overlapped winding B1Y1, and and C first coil number, joint square and the turn ratio of overlapping winding C1Z1 mutually concerned and A1X1 is just the same, wherein
The 2 circle turn ratioes are 1, and all the other 6 circles promptly
6-8,11-13,16-18,
Its turn ratio is 2, and lead-out wire is labeled as A1X1, and wherein 1-3 is expressed as coil and just connects,
The expression coil is reversal connection, the rest may be inferred by analogy, the actual arrangement winding diagram of the A1X1 that only specifically draws among the figure, and in like manner first of the B phase cover winding B1Y1 arranges with the method for the C similar A1X1 of the 1st cover winding C1Z1 mutually, make A1X1, B1Y1,120 ° of C1Z1 winding mutual deviations form symmetrical three phase windings, A1X1, it number is respectively 1,23 that B1Y1, C1Z1 draw wire casing; 17,15; 9,7 grooves; For the purpose of clear and definite and clear, marked B1, Y1, C1, Z1, lead-out wire position among Fig. 1, promptly be respectively 17,15; 9,7 grooves are the lead-out wire position, and all the other coils omit not picture, and this point is known for those skilled in the art, can not cause other misunderstandings.
As shown in Figure 2, be that the 2nd cover winding of the present utility model is arranged winding diagram, number of stator slots, number of poles, the number of phases is consistent with the first cover winding.
The second cover winding A2X2 of A phase has 2 circle windings, promptly
With 21-232 coil
The second cover winding B2Y2 of B phase also has 2 circle windings, promptly
With 13-152 coil
The second cover winding C2Z2 of C phase also has 2 circle windings, promptly
With 5-72 coil
This 6 circle joint square also all is 2, and the turn ratio of every circle number of turn all is 1 (corresponding with the 1st cover winding), and it number is respectively 21,9 that A2X2, B2Y2, C2Z2 draw wire casing; 13,1; 5,17 grooves, A2X2, B2Y2, C2Z2 also are the three-phase symmetric windings of 120 ° of mutual deviations; When rolling off the production line, first cover, three phase windings earlier, second cover, three phase windings again, by this regulation, the first cover winding is a kind of circle (turn ratio is 1: 2) that do not wait, and waits square (the joint square is 2) to be double-deck repeatedly winding, and the second cover winding is a kind of single layer winding that waits circle squares such as (turn ratio are 1) (the joint square also is 2), coil equal turn numbers in each groove of motor stator (the conductor number equates), copper factor is identical.
Fig. 3 is double winding wye connection figure of the present utility model, wherein 1 is the stator outlet box, 2 is the connection of two covers, three phase windings in the stator core, be that A1X1 and A2X2 are connected in series, B1Y1 and B2Y2 are connected in series, C1Z1 and C2Z2 are connected in series, and insert the terminal block in the outlet box at last, are labeled as U, V, W.
Above-mentioned two cover winding technologies tradition are implemented easily, and the servo permanent magnet synchronous motor fractional-slot double-winding structure of Xing Chenging like this to its stator magnet potential analysis, draws:
The harmonics of magnetic force result of calculation contrast table
As seen the utility model the harmonics of magnetic force is all minimum, harmonic content reduces 49.5% than traditional design the harmonics of magnetic force content, improved efficient like this, improved the speed governing and the output characteristic of motor, the ripple moment of torsion reduces obviously, and stationarity is improved, vibrate little, temperature rise reduces by 10 ℃, and low speed output nominal torque improves 5%, reaches the purpose of utility model.
Claims (1)
1. servo permanent magnet synchronous motor fractional-slot double-winding structure, it is characterized in that number of stator slots 24 grooves, number of poles 10 utmost points, the number of phases 3 phases, every extremely every phase groove number is a mark 4/5, fractional slot winding is made of two cover three-phase symmetric windings, and after they were in series with phase winding, star connection was drawn, the first cover winding A1X1 of A phase, 8 turn coil are arranged, i.e. coil 1-3
-6,6-8,11-13,
-15,16-18,
-20,
-1, coil joint square is 2, and wherein 1-3 is expressed as coil and just connects,
-15 expression coil reversal connections, the rest may be inferred by analogy, and the number of turn distribution of this 8 circle was pressed the turn ratio 1: 2: 2: 2: 1: 2: 2: 2; Coil number, joint square and the turn ratio relation of first cover winding B1Y1 of B phase and the C first cover winding C1Z1 mutually are just the same with A1X1, A1X1, and B1Y1, C1Z1 forms the three-phase symmetric winding A1X1 of 120 ° of mutual deviations, and it number is respectively 1,23 that B1Y1, C1Z1 draw wire casing; 17,15; 9,7 grooves; The second cover winding A2X2 of A phase has 2 turn coil, i.e. coil
-11,21-23; B2Y2 also has 2 turn coil, i.e. coil
-3,13-15; C2Z2 also has 2 turn coil, i.e. coil
-19,5-7; Second cover, three phase windings 6 circle joint squares also all are 2, and the turn ratio of every circle number of turn all is 1, and it number is respectively 21,9 that A2X2, B2Y2, C2Z2 draw wire casing; 13,1; 5,17 grooves, A2X2, B2Y2, C2Z2 also are the three-phase symmetric windings of 120 ° of mutual deviations; Coil equal turn numbers in each groove of motor stator, copper factor is identical, in the first cover winding in A1X1 and the second wife's winding A2X2 be in series, B1Y1 and B2Y2 are in series, C1Z1 and C2Z2 are in series, then the three-phase star connection becomes U, V, W mark to draw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205501865U CN202094723U (en) | 2010-09-30 | 2010-09-30 | Fractional-slot double winding structure of servo permanent-magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205501865U CN202094723U (en) | 2010-09-30 | 2010-09-30 | Fractional-slot double winding structure of servo permanent-magnet synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN202094723U true CN202094723U (en) | 2011-12-28 |
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| CN2010205501865U Expired - Fee Related CN202094723U (en) | 2010-09-30 | 2010-09-30 | Fractional-slot double winding structure of servo permanent-magnet synchronous motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593978A (en) * | 2012-02-27 | 2012-07-18 | 山东大学 | Double-winding permanent-magnet brushless servo motor for servo press machine |
| CN102611230A (en) * | 2012-03-27 | 2012-07-25 | 国电联合动力技术(宜兴)有限公司 | Improved direct drive generator stator centralized double-winding coil |
| CN102857002A (en) * | 2012-10-09 | 2013-01-02 | 天津市松正电动汽车技术股份有限公司 | Double-winding motor and six-phase motor for magnetic circuit decoupling |
| CN105186726A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Brushless motor |
| CN105375666A (en) * | 2014-12-04 | 2016-03-02 | 深圳市高瓴科技有限公司 | Novel super power motor |
-
2010
- 2010-09-30 CN CN2010205501865U patent/CN202094723U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593978A (en) * | 2012-02-27 | 2012-07-18 | 山东大学 | Double-winding permanent-magnet brushless servo motor for servo press machine |
| CN102611230A (en) * | 2012-03-27 | 2012-07-25 | 国电联合动力技术(宜兴)有限公司 | Improved direct drive generator stator centralized double-winding coil |
| CN102857002A (en) * | 2012-10-09 | 2013-01-02 | 天津市松正电动汽车技术股份有限公司 | Double-winding motor and six-phase motor for magnetic circuit decoupling |
| CN105375666A (en) * | 2014-12-04 | 2016-03-02 | 深圳市高瓴科技有限公司 | Novel super power motor |
| CN105186726A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Brushless motor |
| CN105186726B (en) * | 2015-07-16 | 2018-06-19 | 博格思众（常州）电机电器有限公司 | Brushless motor |
| US10218239B2 (en) | 2015-07-16 | 2019-02-26 | Bergstrom, Inc. | Brushless motor having terminal fixing blocks |
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