CN102594066B - 6 or 12 magnetic-pole three-phase asynchronous motor - Google Patents
6 or 12 magnetic-pole three-phase asynchronous motor Download PDFInfo
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- CN102594066B CN102594066B CN201210048269.8A CN201210048269A CN102594066B CN 102594066 B CN102594066 B CN 102594066B CN 201210048269 A CN201210048269 A CN 201210048269A CN 102594066 B CN102594066 B CN 102594066B
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Abstract
The invention discloses a 6 or 12 magnetic-pole three-phase asynchronous motor. The motor comprises a stator and a rotor. A stator winding is wound in a stator groove. The numbers of the stator groove are 24, 30 or 42. The numbers of conductors distributed in the each groove in each pole-phase group of the stator winding are the same. For the numbers of the grooves per pole per phase are 2/3, 4/3, 5/3 or 7/3, conductor arrangement modes of the each pole-phase group in the three continuous pole-phase groups are different. For the numbers of the grooves per pole per phase are 5/6 or 7/6, the conductor arrangement modes of the each pole-phase group in the six continuous pole-phase groups are different. According to the invention, the conductor arrangement modes of the each pole-phase group of the stator winding are different. The numbers of conductors distributed in the each groove in the each pole-phase group are the same. When a denominator of the numbers of the grooves per pole per phase is 3 or multiples of 3, three-phase equilibrium can be achieved and the motor can operate normally.
Description
Technical field
The invention belongs to motor manufacturing technology field, be specifically related to a kind of 6 or 12 pole three phase asynchronous motors.
Background technology
Every extremely every phase groove number of threephase asynchronous stator has integer also to have mark.When being mark, denominator can not be 3 or 3 multiple, because regular winding is arranged, cannot obtain three-phase equilibrium or winding coefficient in a basic balance, and motor cannot normally move.For 6 pole three phase asynchronous motors (stators of 24 grooves), every extremely every phase groove number is 24/6/3=4/3, and it is " 211,2 11 ... " that regular winding is arranged samsara rule, or " 121,121 ... ", or " 112,112 ... "; No matter the winding of arranging in which kind of mode, always have one to be " 2 " mutually, two-phase is " 1 " in addition.
For example,, by " 211,211 ... " samsara, U, V, W successively distributing trough number are 2,1,1, and corresponding conductor slot is number as follows:
U phase 1,2 ,-5 ,-6,9,10 ,-13 ,-14,17,18 ,-21 ,-22
V phase 4 ,-8,12 ,-16,20 ,-24
W phase-3,7 ,-11,15 ,-19,23
Like this, U has distributed 12 grooves mutually, accounts for 1/2 of 24 grooves, and V has distributed 6 grooves mutually, accounts for 1/4 of 24 grooves, and W has distributed 6 grooves mutually, accounts for 1/4 of 24 grooves.Therefore, the winding coefficient of three phase windings just differs greatly, and three-phase can not balance, and the motor of making so cannot start, and enables starting but electromagnetic noise is remarkable, motor seriously generates heat or it is unable to move, and in a word, cannot normally move.
But in actual production, for general existing rotor punching, or in order to reduce costs, or in order to meet user's specific (special) requirements, often can run into denominator and be the fractional-slot of 3 or 3 multiple.
Summary of the invention
The invention provides a kind of 6 or 12 pole three phase asynchronous motors, can make three-phase equilibrium in the situation that every extremely every phase groove is counted denominator is 3 or 3 multiple, motor normally moves.
Or 12 pole three phase asynchronous motors, comprise stator and rotor; In described stator slot, there is around the home stator winding;
Described number of stator slots is 24,30 or 42; The conductor number that each utmost point of described stator winding is distributed in group in each groove mutually all equates;
For every extremely every phase groove number, be that 2/3,4/3,5/3 or 7/3, three continuous utmost point conductor arrangement mode that each utmost point is organized mutually in group is mutually all not identical;
For every extremely every phase groove number, be that 5/6 or 7/6, six continuous utmost point conductor arrangement mode that each utmost point is organized mutually in group is mutually all not identical.
Described stator winding around formula be double-layer overlapped around, the pitch of stator winding is short pitch.
For every extremely every phase groove number, be 2/3,4/3,5/3 or 7/3, the conductor arrangement mode circulation primary that every 3 utmost points are organized mutually; For every extremely every phase groove number, be 5/6 or 7/6, the conductor arrangement mode circulation primary that every 6 utmost points are organized mutually.
Preferably, the gas length of described stator and rotor is 1～1.6 times of standard air gap value; Can eliminate the impact that the difference at respective conductors arrangement mode middle slot phase angle causes.
Preferably, close and close 0.6～1 times of being the close value of corresponding standard magnetic of yoke magnetic of the close and yoke magnetic tooth magnetic close and rotor of the tooth magnetic of described stator; Can alleviate noise of motor and vibration.
The present invention is not identical by the conductor arrangement mode that each utmost point of stator winding is organized mutually, the conductor number that each utmost point is distributed in group in each groove mutually all equates, can make three-phase equilibrium in the situation that every extremely every phase groove is counted denominator is 3 or 3 multiple, motor normally moves.
Accompanying drawing explanation
Fig. 1 is the stator of 24 groove 6 pole three phase asynchronous motors and the schematic diagram of stator winding thereof.
Fig. 2 is 24 groove 6 pole three phase asynchronous motors, and every extremely every phase groove number is 4/3, the winding distribution diagram of arranging by " 211 121 112,211 121 112 ".
Fig. 3 is 24 groove 12 pole three phase asynchronous motors, and every extremely every phase groove number is 2/3, the winding distribution diagram of arranging by " 110 101 011,110 101 011 ".
Fig. 4 is 30 groove 6 pole three phase asynchronous motors, and every extremely every phase groove number is 5/3, the winding distribution diagram of arranging by " 221 212 122,221 212 122 ".
Fig. 5 is 30 groove 12 pole three phase asynchronous motors, and every extremely every phase groove number is 5/6, the winding distribution diagram of arranging by " 111,110 111,101,111,011 110,111 101,111 011111 ".
Fig. 6 is 42 groove 6 pole three phase asynchronous motors, and every extremely every phase groove number is 7/3, the winding distribution diagram of arranging by " 322 232 223,322 232 223 ".
Fig. 7 is 42 groove 12 pole three phase asynchronous motors, and every extremely every phase groove number is 7/6, the winding distribution diagram of arranging by " 211,111 121,111,112,111 111,211 111,121 111112 ".
Embodiment
In order more specifically to describe the present invention, below in conjunction with the drawings and the specific embodiments, technical scheme of the present invention is elaborated.
A pole three phase asynchronous motor, comprises stator and rotor; As shown in Figure 1, in stator slot, have around the home stator winding, stator winding around formula be double-layer overlapped around, the pitch of stator winding is short pitch, number of stator slots is 24, every extremely every phase groove number is 4/3.
The conductor number that each utmost point of stator winding is distributed in group in each groove mutually all equates; Three continuous utmost points conductor arrangement mode that each utmost point is organized mutually in group is mutually all not identical; The conductor arrangement mode circulation primary that every 3 utmost points are organized mutually.
The winding distribution diagram of Fig. 2 for arranging by " 211 121 112,211 121 112 "; It can be " 121 112 211; 121 112 211 ", " 112 211 121,112 211 121 ", " 211,112 121,211 112 121 ", " 121 211 112; 121 211 112 ", " 112 121 211,112 121 211 " totally 6 kinds that the winding of effect same is arranged samsara.On the basis of these 6 kinds of arrangements, can derive a plurality of variants, for example based on " 211 121 112; 211 121 112 ", arrange, can derive " 111 211 122; 111 211 122 ", that primary " 2 " in " 211121112211121112 " are moved on in last position in fact, i.e. " 111,211,122 111211122 "; In like manner, can obtain various arrangement modes such as " 112 111 221,112 111 221 ".
Visible in figure, U, V, W tri-phase windings are divided 24 grooves number equally, and every have 8 grooves mutually, and corresponding conductor slot is number as follows:
U phase 1,2 ,-5,9 ,-13 ,-14,17 ,-21
V phase 4 ,-8,11,12 ,-16,20 ,-23 ,-24
W phase-3,6,7 ,-10,15 ,-18 ,-19,22
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 211 " and " 121 " and " 112 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 100%～160% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 60%～100% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
Gas length is very large on motor performance and operational reliability impact.On the one hand, for reducing exciting current, improve power factor, reducing stray loss, air gap can not be too large; On the other hand, reliable for guaranteeing motor, to avoid non-uniform air-gap and cause that stator and rotor wipe mutually, air gap again can not be too little.At present, domestic small and middle induction motors standard air gap value is as shown in table 1.
Table 1
Magnetic flux density is the important parameter of motor electromagnetic design, all influential to property indices such as the efficiency of motor, power factor, starting torque, breakdown torque, starting current, vibration and noises.For example: stator teeth magnetic flux density (being called for short " stator tooth magnetic is close ")=every utmost point main flux/stator tooth cross-section is long-pending.Magnetic flux density, as a parameter of design of electrical motor, can be adjusted as required, makes it increase or reduce.The method of adjusting can be both the size that changes main magnetic flux, also can be to change magnetic circuit sectional area, the former is that winding parameter by changing design of electrical motor (such as coil turn, wire gauge, way in parallel, winding pitch, winding type etc.) is adjusted, and the latter is magnetic structure by changing motor stator punching, rotor punching (such as the shape of three circle sizes, groove number, groove and size etc.) thereby changes that stator tooth cross-section is long-pending, stator yoke sectional area, rotor tooth sectional area, rotor yoke sectional area.At present, the close value of domestic small and middle induction motors standard magnetic is as shown in table 2.
Table 2
A pole three phase asynchronous motor, number of stator slots is 24, every extremely every phase groove number is 2/3; The winding distribution diagram of Fig. 3 for arranging by " 110 101 011,110 101 011 ".When being " 0 ", this takes turns " sky " mutually; For example, while groove numbers 1 and 2 being distributed to U ,-W, V by " 110 ", U be " 1 " mutually, and W is " 2 " mutually, V phase bye (being this round regardless of joining conductor slot number to V phase).It can be " 110 011 101; 110 011 101 ", " 101 110 011,101 110 011 ", " 101 011 110,101 011110 ", " 011 110 101; 011 110 101 ", " 011 101 110,011 101 110 " totally 6 kinds that the winding of effect same is arranged samsara.On the basis of these 6 kinds of arrangements, can derive a plurality of variants.Visible in figure, U, V, W tri-phase windings are divided 24 grooves number equally, and every have 8 grooves mutually, and corresponding conductor slot is number as follows:
U phase 1 ,-3 ,-7,9,13 ,-15 ,-19,21
V phase-4,6,10 ,-12 ,-16,18,22 ,-24
W phase-2 ,-5,8,11 ,-14 ,-17,20,23
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 110 " and " 101 " and " 011 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 110%～160% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 60%～90% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
A pole three phase asynchronous motor, number of stator slots is 30, every extremely every phase groove number is 5/3; The winding distribution diagram of Fig. 4 for arranging by " 221 212 122,221 212 122 ".It can be " 221 122 212; 221 122 212 ", " 212 221 122,212 221 122 ", " 212 122 221,212 122 221 ", " 122 221 212; 122 221 212 ", " 122 212 221,122 212 221 " totally 6 kinds that the winding of effect same is arranged samsara.On the basis of these 6 kinds of arrangements, can derive a plurality of variants.Visible in figure, U, V, W tri-phase windings are divided 30 grooves number equally, and every have 10 grooves mutually, and corresponding conductor slot is number as follows:
U phase 1,2 ,-6 ,-7,11 ,-16 ,-17,21,22 ,-26
V phase 5 ,-9 ,-10,14,15 ,-20,24,25 ,-29 ,-30
W phase-3 ,-4,8 ,-12 ,-13,18,19 ,-23,27,28
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 221 " and " 212 " and " 122 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 100%～150% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 70%～100% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
A pole three phase asynchronous motor, number of stator slots is 30, every extremely every phase groove number is 5/6; The winding distribution diagram of Fig. 5 for arranging by " 111,110 111,101 111,011 110,111 101,111 011111 ".It can be " 011,111 101,111 110,111 111,011 111,101 111110 " etc. totally 720 kinds that the winding of effect same is arranged samsara.On the basis of these 720 kinds of arrangements, can derive a plurality of variants.Visible in figure, U, V, W tri-phase windings are divided 30 grooves number equally, and every have 10 grooves mutually, and corresponding conductor slot is number as follows:
U phase 1 ,-4,6 ,-9,11,16 ,-18,21 ,-23 ,-28
V phase 3,8 ,-10,13 ,-15 ,-20,22 ,-25,27 ,-30
W phase-2,5 ,-7 ,-12,14 ,-17,19,24 ,-26,29
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 111110 " and " 111101 " and " 111011 " and " 110111 " and " 101111 " and " 011111 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 120%～160% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 60%～80% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
A pole three phase asynchronous motor, number of stator slots is 42, every extremely every phase groove number is 7/3; The winding distribution diagram of Fig. 6 for arranging by " 322 232 223,322 232 223 ".It can be " 322 223 232; 322 223 232 ", " 232 322 223,232 322 223 ", " 232 223 322,232 223 322 ", " 223 232 322; 223 232 322 ", " 223 322 232,223 322 232 " totally 6 kinds that the winding of effect same is arranged samsara.On the basis of these 6 kinds of arrangements, can derive a plurality of variants.Visible in figure, U, V, W tri-phase windings are divided 42 grooves number equally, and every have 14 grooves mutually, and corresponding conductor slot is number as follows:
U phase 1,2,3 ,-8 ,-9,15,16 ,-22 ,-23 ,-24,29,30 ,-36 ,-37
V phase 6,7 ,-13 ,-14,19,20,21 ,-27 ,-28,34,35 ,-40 ,-41 ,-42
W phase-4 ,-5,10,11,12 ,-17 ,-18,25,26 ,-31 ,-32 ,-33,38,39
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 322 " and " 232 " and " 223 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 110%～160% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 70%～95% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
A pole three phase asynchronous motor, number of stator slots is 42, every extremely every phase groove number is 7/6; The winding distribution diagram of Fig. 7 for arranging by " 211,111 121,111 112,111 111,211 111,121 111112 ".It can be " 211,111 111,112 111,121 111,211 112,111 121111 " etc. totally 720 kinds that the winding of effect same is arranged samsara.On the basis of these 720 kinds of arrangements, can derive a plurality of variants.Visible in figure, U, V, W tri-phase windings are divided 42 grooves number equally, and every have 14 grooves mutually, and corresponding conductor slot is number as follows:
W phase-3,6 ,-9 ,-10,13 ,-16,20 ,-23,27 ,-30,33,34 ,-37,40
So just obtain three-phase equilibrium or winding coefficient in a basic balance, meet the requirements of the normal operation of motor.The impact causing in order to eliminate the difference at " 211111 " and " 121111 " and " 112111 " and " 111211 " and " 111121 " and " 111112 " arrangement middle slot phase angle, in present embodiment, in order to optimize magnetic Circuit Design, making the gas length between rotor is 120%～160% of standard air gap value, the magnetic flux density that makes rotor tooth portion and yoke portion is 70%～90% of the close value of corresponding standard magnetic, to meet the specific (special) requirements of user to noise of motor and vibration.
Claims (1)
1. 6 or 12 pole three phase asynchronous motors, comprise stator and rotor, have around the home stator winding in described stator slot; It is characterized in that:
Described number of stator slots is 24,30 or 42; The conductor number that each utmost point of described stator winding is distributed in group in each groove mutually all equates;
For every extremely every phase groove number, be that 2/3,4/3,5/3 or 7/3, three continuous utmost point conductor arrangement mode that each utmost point is organized mutually in group is mutually all not identical, and the conductor arrangement mode circulation primary organized mutually of every 3 utmost points;
For every extremely every phase groove number, be that 5/6 or 7/6, six continuous utmost point conductor arrangement mode that each utmost point is organized mutually in group is mutually all not identical, and the conductor arrangement mode circulation primary organized mutually of every 6 utmost points;
Described stator winding around formula be double-layer overlapped around, the pitch of stator winding is short pitch, described stator and the gas length of rotor are 1～1.6 times of standard air gap value, and the tooth magnetic of described stator is close and yoke magnetic tooth magnetic close and rotor is close and close 0.6～1 times of being the close value of corresponding standard magnetic of yoke magnetic;
For 24 groove 6 pole three phase asynchronous motors, every extremely every phase groove number is 4/3, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 211 121 112 211 121 112 ";
For 24 groove 12 pole three phase asynchronous motors, every extremely every phase groove number is 2/3, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 110 101 011 110 101 011 110 101 011 110 101011 ";
For 30 groove 6 pole three phase asynchronous motors, every extremely every phase groove number is 5/3, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 221 212 122 221 212 122 ";
For 30 groove 12 pole three phase asynchronous motors, every extremely every phase groove number is 5/6, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 111,110 111,101 111,011 110,111 101,111 011111 ";
For 42 groove 6 pole three phase asynchronous motors, every extremely every phase groove number is 7/3, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 322 232 223 322 232 223 ";
For 42 groove 12 pole three phase asynchronous motors, every extremely every phase groove number is 7/6, and the winding conductor arrangement mode that its utmost point is organized is mutually: " 211,111 121,111 112,111 111,211 111,121 111112 ".
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| JP5940421B2 (en) * | 2012-09-25 | 2016-06-29 | 株式会社デンソー | Rotating electric machine stator |
| US9608501B2 (en) | 2012-12-13 | 2017-03-28 | Mitsubishi Electric Corporation | Rotary electric machine |
| WO2017056296A1 (en) * | 2015-10-01 | 2017-04-06 | 三菱電機株式会社 | Three-phase induction motor |
| CN108347106A (en) * | 2018-05-09 | 2018-07-31 | 江苏富丽华通用设备股份有限公司 | A kind of rotor punching of low-noise low vibration magneto |
| CN109599974B (en) * | 2018-12-24 | 2020-06-30 | 浙江大学 | Three-phase single-layer winding motor with span of 2 |
| CN113014019A (en) * | 2019-12-20 | 2021-06-22 | 丹东山川电机有限公司 | Winding and winding method and wire inserting method for 48-slot 12-pole three-phase asynchronous motor |
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| CN2798398Y (en) * | 2005-05-27 | 2006-07-19 | 耿贞祥 | Y 80 series three phase 6 electrode power-driven machine |
| CN1288820C (en) * | 2004-10-26 | 2006-12-06 | 泰豪科技股份有限公司 | Three-phase lap winding having fractional slot and fractional turn |
| CN202135026U (en) * | 2010-08-10 | 2012-02-01 | 株式会社安川电机 | Generator and wind generating system |
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|---|---|---|---|---|
| CN1288820C (en) * | 2004-10-26 | 2006-12-06 | 泰豪科技股份有限公司 | Three-phase lap winding having fractional slot and fractional turn |
| CN2798398Y (en) * | 2005-05-27 | 2006-07-19 | 耿贞祥 | Y 80 series three phase 6 electrode power-driven machine |
| CN202135026U (en) * | 2010-08-10 | 2012-02-01 | 株式会社安川电机 | Generator and wind generating system |
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