CN202183714U - 8/16 pole-changing multi-speed three-phase asynchronous motor - Google Patents
8/16 pole-changing multi-speed three-phase asynchronous motor Download PDFInfo
- Publication number
- CN202183714U CN202183714U CN 201120287145 CN201120287145U CN202183714U CN 202183714 U CN202183714 U CN 202183714U CN 201120287145 CN201120287145 CN 201120287145 CN 201120287145 U CN201120287145 U CN 201120287145U CN 202183714 U CN202183714 U CN 202183714U
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- punching
- pole
- phase asynchronous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses an 8/16 pole-changing multi-speed three-phase asynchronous motor including a stator and a rotor coupled with the stator. A product value of a slot number of stator punching of the stator and a tooth width of the stator is 29 to 32 times of a yoke height of the stator. A product value of a slot number of rotor punching of the rotor and a tooth width of the rotor is 29 to 32 times of a yoke height of the rotor. Through a reasonable arrangement of a mutual proportion of slot numbers, tooth widths and yoke heights of the stator punching and the rotor punching of the stator and the rotor of the three-phase asynchronous motor, structures of the stator punching and the rotor punching of the stator and the rotor are uniform, magnetic flux density in tooth parts and yoke parts of the stator and the rotor is distributed reasonably and in a balanced manner. Thus, the iron loss of the punching is lowered effectively, the radiation of the motor and the winding temperature rise are decreased, the phase spread harmonic content in a winding is reduced, and the electromagnetic noise in the running of the motor is lowered. Therefore, the 8/16 pole-changing multi-speed three-phase asynchronous motor meets requirements of comprehensive performance of vibration, noise, efficiency, moment and the like completely.
Description
Technical field
The utility model belongs to the design of electrical motor technical field, is specifically related to a kind of 8/16 pole-changing multi-speed 3-phase asynchronous motor.
Background technology
At present, domestic threephase asynchronous technology be widely used in 2 utmost points, 4 utmost points, 6 utmost points, 8 utmost points, 10 utmost points, 12 utmost points etc. each extremely in.In the prior art, 6 pole three phase asynchronous motors, the groove number of stator punching and the product of the stator facewidth are high 10～18 times of stator yoke, and the groove number of rotor punching and the product of the rotor facewidth are high 7～16 times of rotor yoke; 8 pole three phase asynchronous motors, the groove number of stator punching and the product of the stator facewidth are high 15～25 times of stator yoke, and the groove number of rotor punching and the product of the rotor facewidth are high 8～23 times of rotor yoke; 10 pole three phase asynchronous motors, the groove number of stator punching and the product of the stator facewidth are high 24～27 times of stator yoke, and the groove number of rotor punching and the product of the rotor facewidth are high 9～24 times of rotor yoke; 12 pole three phase asynchronous motors, the groove number of stator punching and the product of the stator facewidth are high 25～28 times of stator yoke, and the groove number of rotor punching and the product of the rotor facewidth are high 10～26 times of rotor yoke; And, adopt the threephase asynchronous rotor punching of a certain number of poles of existing 6～12 utmost points at present mostly for the rotor punching of 8/16 pole-changing multi-speed 3-phase asynchronous motor.
Fig. 1 (a) adopts the structural representation of 8 pole three phase asynchronous motor stator punchings as 8/16 pole-changing multi-speed 3-phase asynchronous motor stator punching for prior art; When the magnetic flux density of 16 utmost point stator teeths be a reasonable value (for example: in the time of 15500 Gausses); The magnetic flux density of 16 utmost point stator yoke portions then is 4620～7710 Gausses; Promptly the stator yoke portion magnetic flux density during 16 utmost points is 0.3～0.5 times of the stator teeth magnetic flux density (and the stator yoke portion magnetic flux density during 8 utmost points is 0.6～1.0 times of the stator teeth magnetic flux density; Can accept), cause 16 utmost point stator magnetic circuits uneven.
Fig. 1 (b) adopts the structural representation of 10 pole three phase asynchronous motor rotor punchings as 8/16 pole-changing multi-speed 3-phase asynchronous motor rotor punching for prior art; When 16 utmost point rotor tooth portion magnetic flux densities be a reasonable value (for example: in the time of 15500 Gausses); The magnetic flux density of 16 utmost point rotor yokes then is 2770～7400 Gausses; Promptly the rotor yoke magnetic flux density during 16 utmost points is 0.18～0.48 times of rotor tooth portion magnetic flux density (and the rotor yoke magnetic flux density during 8 utmost points is 0.36～0.96 times of rotor tooth portion magnetic flux density; Can accept reluctantly), cause 16 utmost point rotor magnetic circuits uneven.If adopt 8 pole three phase asynchronous motor rotor punching structures, then the magnetic flux density of rotor yoke will be lower, and magnetic circuit will be more uneven.It is thus clear that; The threephase asynchronous rotor punching of some numbers of poles of adopting existing 6～12 utmost points is as the rotor punching of 8/16 pole-changing multi-speed 3-phase asynchronous motor; Can cause the magnetic circuit distributed pole uneven; The magnetic flux density of stator teeth magnetic circuit is too saturated and magnetic flux density stator yoke portion magnetic circuit is low excessively, and magnetic material is used fully; Sometimes for the magnetic flux density that makes the stator teeth magnetic circuit meets the demands, the core length that extends of having to causes the waste of material, the increase of cost.There is the above-mentioned magnetic circuit unbalanced problem that distributes equally in rotor magnetic circuit.
In the prior art; The slot-number ratio Q1/Q2 that threephase asynchronous rotor commonly used cooperates has 36/28,48/44,54/58,72/58,72/86,72/84,90/72,90/106 etc., is applied to that every extremely every phase groove number is non-integer mostly in 8/16 pole-changing multi-speed 3-phase asynchronous motor; For example, number of stator slots Q1=90, then the every extremely every phase groove number of stator (during 8 utmost points: q=Q1/m/2P=90/3/8=15/4, during 16 utmost points: q=Q1/m/2P=90/3/16=15/8) be non-integer.When every extremely every phase groove number was non-integer, the harmonic wave content in the winding was abundant unusually, and electromagnetic noise is remarkable during the motor operation; Because the increase of harmonic wave content causes the increase of motor harmonic leakage reactance, stray loss to increase, motor starting moment, maximum moment and motor operational efficiency descend simultaneously; In addition, when every extremely every phase groove number is non-integer, be asymmetric geometry between three phase windings, cause the stator winding rule to increase man-hour, error rate increases.
Though can to satisfy the every extremely every phase groove number of stator be the condition of integer as Q1=48, of the prior art 48/44 be threephase asynchronous be 4 utmost points or 8 pole three phase asynchronous motors, 8 utmost point stator punchings of the prior art, Q1 * bt1=(15～25) hj1; 8 utmost point rotor punchings, Q2 * bt2=(8～23) hj2; Bt1 is the stator facewidth, and hj1 is that stator yoke is high, and bt2 is the rotor facewidth, and hj2 is that rotor yoke is high; The ratio that the product of the ratio that the groove number of 4 utmost point stator punchings and the product of the stator facewidth and stator yoke are high and the groove number of 4 utmost point rotor punchings and the rotor facewidth and rotor yoke are high is then littler.Stator teeth magnetic flux density and stator yoke portion magnetic flux density are extremely unbalanced, and rotor tooth portion magnetic flux density and rotor yoke magnetic flux density are also extremely unbalanced, make magnetic material can not get utilizing fully.
In addition, the threephase asynchronous stator punching of some numbers of poles that adopts existing 6～12 utmost points also possibly produce electromagnetic noise as 8/16 pole-changing multi-speed 3-phase asynchronous motor stator laminating structure, and produces bad phenomenon such as additional torque during operation.
Summary of the invention
The utility model provides a kind of 8/16 pole-changing multi-speed 3-phase asynchronous motor; Solved the existing existing above-mentioned technological deficiency of 8/16 pole-changing multi-speed 3-phase asynchronous motor, satisfied of the requirement of 8/16 pole-changing multi-speed 3-phase asynchronous motor combination properties such as vibration, noise, efficient, moments.
A kind of 8/16 pole-changing multi-speed 3-phase asynchronous motor comprises stator and the rotor that cooperates with it;
The groove number of the stator punching of described stator and the product value of the stator facewidth are high 29～32 times of stator yoke, and stator yoke portion magnetic flux density is 1.15～1.25 times of stator teeth magnetic flux density when making 8 utmost points; Stator yoke portion magnetic flux density is 0.58～0.64 times of stator teeth magnetic flux density during 16 utmost points;
The groove number of the rotor punching of described rotor and the product value of the rotor facewidth are high 29～32 times of rotor yoke, and the rotor yoke magnetic flux density is 1.15～1.25 times of rotor tooth portion magnetic flux density when making 8 utmost points; The rotor yoke magnetic flux density is 0.58～0.64 times of rotor tooth portion magnetic flux density during 16 utmost points.
In the optimized technical scheme, the groove number of described stator punching and the product value of the stator facewidth equal or approach the groove number of described rotor punching and the product value of the rotor facewidth; Make the magnetic circuit relative equilibrium of stator punching and rotor punching, and make magnetic material be fully utilized, thereby reduce cost, reduce iron loss, improve performance.
In the optimized technical scheme, the slot-number ratio of described stator punching and described rotor punching is 48/44,96/72,96/108 or 144/120; Make the every extremely every phase groove number of stator (q=Q1/m/2P, Q1=96 for example, m=3,2P=16 q=96/3/16=2) is integer, electromagnetic noise when having reduced the motor operation has reduced the harmonic wave content in the winding.
In the optimized technical scheme, the punching tooth of described stator punching is a parallel teeth.
In the optimized technical scheme, when the groove number of the described stator punching groove number less than described rotor punching, the skewed slot distance of described rotor is the tooth pitch of described stator punching; When the groove number of the described stator punching groove number greater than described rotor punching, the skewed slot distance of described rotor is the tooth pitch of described rotor punching; Can weaken the slot ripples of motor stator rotor.
In the optimized technical scheme, described rotor is a cage rotor.
The utility model is through the reasonable setting to the high mutual ratio of groove number, the facewidth and the yoke of the punching of threephase asynchronous rotor; Make rotor punching even structure; Stator teeth and yoke portion magnetic flux density, rotor tooth portion and yoke portion magnetic flux distribution are rationally balanced; Effectively reduce punching iron loss, reduced that the motor feels hot and reduced winding temperature rise; Reduced the harmonic wave content in the winding, electromagnetic noise when having reduced the motor operation satisfies the requirement of 8/16 pole-changing multi-speed 3-phase asynchronous motor to combination properties such as vibration, noise, efficient, moments fully.
Description of drawings
Fig. 1 (a) adopts 8 pole three phase asynchronous motor stator punchings as 8/16 pole-changing multi-speed 3-phase asynchronous motor stator laminating structure sketch map for prior art.
Fig. 1 (b) adopts 10 pole three phase asynchronous motor rotor punchings as 8/16 pole-changing multi-speed 3-phase asynchronous motor rotor punching structural representation for prior art.
Fig. 2 (a) is the stator laminating structure sketch map of the utility model 8/16 pole-changing multi-speed 3-phase asynchronous motor.
Fig. 2 (b) is the rotor punching structural representation of the utility model 8/16 pole-changing multi-speed 3-phase asynchronous motor.
Embodiment
In order to describe the utility model more particularly, be elaborated below in conjunction with accompanying drawing and embodiment technical scheme to the utility model.
As shown in Figure 2, a kind of 8/16 pole-changing multi-speed 3-phase asynchronous motor comprises stator and the rotor that cooperates with it.
The groove number of the stator punching of stator and the product value of the stator facewidth are high 30 times of stator yoke, that is: Q1 * bt1=30hj1, and the punching tooth of stator punching is a parallel teeth; The height hj1 of the yoke portion relative stator facewidth bt1 that can reflect stator punching is less, makes that the magnetic circuit of stator teeth and yoke portion is balanced, and magnetic material can be fully utilized.
The groove number of the rotor punching of rotor and the product value of the rotor facewidth are high 30 times of rotor yoke, that is: Q2 * bt2=30hj2, and rotor is a cage rotor; The relative rotor facewidth of the height hj2 of the yoke portion bt2 that can reflect rotor punching is less, makes that the magnetic circuit of rotor tooth portion and yoke portion is balanced, and magnetic material can be fully utilized.
The harmonic analysis of stator winding when table 1 is 8 8/16 pole-changing multi-speed 3-phase asynchronous motor, 8 utmost points for prior art 90 groove spans; The harmonic analysis of stator winding when table 2 is 8 8/16 pole-changing multi-speed 3-phase asynchronous motor, 8 utmost points for this execution mode 96 groove spans; The harmonic analysis of stator winding when table 2 is 8 8/16 pole-changing multi-speed 3-phase asynchronous motor, 16 utmost points for this execution mode 96 groove spans.
Table 1: the harmonic data of stator winding during prior art 8/16 pole-changing multi-speed 3-phase asynchronous motor 8 utmost points
| V | KQV | PHAN | Kqv+ | Kqv- | Kyv | Fv+ | Fv- |
| 2 | .046 | 112 | 0 | .04643 | .52992 | 0 | 5.720903 |
| 4 | .955 | 44 | .95512 | 0 | .89879 | 100 | 0 |
| 8 | .033 | 88 | 0 | .03341 | .78801 | 0 | 1.533629 |
| 10 | .044 | 20 | .04351 | 0 | .34202 | .693452 | 0 |
| 14 | .054 | 64 | 0 | .05414 | -.69466 | 0 | -1.251758 |
| 16 | .034 | -4 | .03366 | 0 | -.9703 | -.951153 | 0 |
| 20 | .192 | 220 | 0 | .19196 | -.64279 | 0 | -2.874658 |
| 22 | .06 | -28 | .05961 | 0 | -.13917 | -.175707 | 0 |
| 26 | .039 | 196 | 0 | .03931 | .82904 | 0 | .583982 |
| 28 | .138 | 128 | .13779 | 0 | .99939 | 2.291507 | 0 |
| 32 | .035 | 172 | 0 | .03468 | .46947 | 0 | .237048 |
| 34 | .038 | 104 | .03775 | 0 | -.06976 | -.03609 | 0 |
| 38 | .076 | 148 | 0 | .07604 | -.92718 | 0 | -.864489 |
| 40 | .035 | 80 | .03547 | 0 | -.98481 | -.406935 | 0 |
| 44 | .089 | -56 | 0 | .08898 | -.27564 | 0 | -.259734 |
| 46 | .089 | 56 | .08898 | 0 | .27564 | .248441 | 0 |
| 50 | .035 | -80 | 0 | .03547 | .98481 | 0 | .325548 |
Table 2: the harmonic data of stator winding during this execution mode 8/16 pole-changing multi-speed 3-phase asynchronous motor 8 utmost points
| V | KQV | PHAN | Kqv+ | Kqv- | Kyv | Fv+ | Fv- |
| 4 | .958 | 37.5 | .95766 | 0 | .86603 | 100 | 0 |
| 20 | .205 | 187.5 | 0 | .20533 | -.86603 | 0 | -4.288254 |
| 28 | .158 | 82.5 | .15756 | 0 | .86603 | 2.350352 | 0 |
| 44 | .126 | 232.5 | 0 | .12608 | -.86603 | 0 | -1.196841 |
Table 3: the harmonic data of stator winding during this execution mode 8/16 pole-changing multi-speed 3-phase asynchronous motor 16 utmost points
| V | KQV | PHAN | Kqv+ | Kqv- | Kyv | Fv+ | Fv- |
| 8 | .837 | 255 | 0 | .83652 | .86603 | 0 | 100 |
| 16 | .433 | -30 | .43301 | 0 | -.86603 | -25.881905 | 0 |
| 32 | .25 | -60 | 0 | .25 | .86603 | 0 | 7.471462 |
| 40 | .224 | 15 | .22414 | 0 | -.86603 | -5.358984 | 0 |
During by 8/16 pole-changing multi-speed 3-phase asynchronous motor, 8 utmost points of the visible prior art of table 1 (during 16 utmost points; Owing to can not satisfy the primary condition of the three phase windings symmetry of KqpA=KqpB=KqpC; So can't normally move) harmonic content in the stator winding is abundant unusually, and number of pole-pairs V=50 is with in the interior harmonic wave, except that number of pole-pairs is 4 first-harmonic; Also contain low-order harmonic 2; High order harmonic component 8,10,14,16,20,22,26,28,32,34,38,40,44,46,50 is applied to then cause in the motor motor harmonic leakage reactance, stray loss, vibration and electromagnetic noise to increase, and motor starting moment, maximum moment and operational efficiency descend.
And the harmonic content in the stator winding is very little during by 8/16 pole-changing multi-speed 3-phase asynchronous motor, 8 utmost points of visible this execution mode of table 2, and V=50 is with in the interior harmonic wave, except that number of pole-pairs is 4 first-harmonic, does not have low-order harmonic, also has only 20,28,44 in the high order harmonic component.
And the winding coefficient KqpA=KqpB=KqpC of the motor during 16 utmost points; Satisfied the primary condition of three phase windings symmetries; Harmonic content during therefore by 8/16 pole-changing multi-speed 3-phase asynchronous motor, 16 utmost points of visible this execution mode of table 3 in the stator winding is also less, and V=50 is with in the interior harmonic wave, except that number of pole-pairs is 8 first-harmonic; Do not have low-order harmonic, have only 16,32,40 in the high order harmonic component yet; Therefore, this execution mode has overcome the performance bad phenomenon of prior art 8/16 pole-changing multi-speed 3-phase asynchronous motor, has fully satisfied the requirement of 8/16 pole-changing multi-speed 3-phase asynchronous motor to combination properties such as vibration, noise, efficient, moments.
Claims (6)
1. a pole-changing multi-speed 3-phase asynchronous motor comprises stator and the rotor that cooperates with it, it is characterized in that:
The groove number of the stator punching of described stator and the product value of the stator facewidth are high 29～32 times of stator yoke;
The groove number of the rotor punching of described rotor and the product value of the rotor facewidth are high 29～32 times of rotor yoke.
2. 8/16 pole-changing multi-speed 3-phase asynchronous motor according to claim 1 is characterized in that: the groove number of described stator punching and the product value of the stator facewidth equal the groove number of described rotor punching and the product value of the rotor facewidth.
3. 8/16 pole-changing multi-speed 3-phase asynchronous motor according to claim 1 is characterized in that: the slot-number ratio of described stator punching and described rotor punching is 48/44,96/72,96/108 or 144/120.
4. 8/16 pole-changing multi-speed 3-phase asynchronous motor according to claim 1 is characterized in that: the punching tooth of described stator punching is a parallel teeth.
5. 8/16 pole-changing multi-speed 3-phase asynchronous motor according to claim 1 is characterized in that: when the groove number of the described stator punching groove number less than described rotor punching, the skewed slot distance of described rotor is the tooth pitch of described stator punching; When the groove number of the described stator punching groove number greater than described rotor punching, the skewed slot distance of described rotor is the tooth pitch of described rotor punching.
6. 8/16 pole-changing multi-speed 3-phase asynchronous motor according to claim 1 is characterized in that: described rotor is a cage rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120287145 CN202183714U (en) | 2011-08-09 | 2011-08-09 | 8/16 pole-changing multi-speed three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120287145 CN202183714U (en) | 2011-08-09 | 2011-08-09 | 8/16 pole-changing multi-speed three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202183714U true CN202183714U (en) | 2012-04-04 |
Family
ID=46176735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120287145 Expired - Fee Related CN202183714U (en) | 2011-08-09 | 2011-08-09 | 8/16 pole-changing multi-speed three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202183714U (en) |
-
2011
- 2011-08-09 CN CN 201120287145 patent/CN202183714U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203086307U (en) | Permanent magnet synchronous motor with ventilation structure | |
| CN103208894B (en) | Automatic start type synchronous magnetic resistance motor and rotor thereof | |
| CN202142926U (en) | Motor rotor and motor with same | |
| CN107294243B (en) | Low-torque-fluctuation built-in permanent magnet motor rotor and motor magnetic density optimization method | |
| CN202076902U (en) | Stator/rotor punching structure of 20 pole three-phase asynchronous motor | |
| CN104600879A (en) | Stator structure of low-speed pole-slot matched permanent magnet motor based on oriented silicon steel plate | |
| Yazdanpanah et al. | Analytical design of a radial-flux PM generator for direct-drive wind turbine renewable energy application | |
| CN106026448A (en) | Brushless motor for EPS | |
| Yetgin et al. | Efficiency optimization of slitted–core induction motor | |
| CN106026464A (en) | Motor rotor and permanent-magnet synchronous motor | |
| Patel et al. | Performance comparison of permanent magnet synchronous motor and induction motor for cooling tower application | |
| CN104022611B (en) | A kind of self-starting Rare-earth PMSM Rotor Structure | |
| CN202183714U (en) | 8/16 pole-changing multi-speed three-phase asynchronous motor | |
| CN202076900U (en) | Stator/rotor punching sheet structure of 16-pole three-phase asynchronous motor | |
| CN201656716U (en) | 14-Pole three-phase asynchronous motor | |
| CN206595871U (en) | A kind of magnetic structure of permanent-magnet synchronous brushless electric machine | |
| CN201667594U (en) | 24-pole three-phase asynchronous motor | |
| CN201656715U (en) | 18-pole 3-phase asynchronous motor | |
| CN201113576Y (en) | Six pole electric motor stator stamping | |
| CN201113570Y (en) | Two pole electric motor stator stamping | |
| CN205882878U (en) | Stator core , stator assembly and motor | |
| CN204408034U (en) | A kind of assembled stator structure of monodentate of low speed proximal pole groove magneto | |
| CN204886612U (en) | Slot combination structure of 30 sextupole threephase asynchronous machine stators and rotor | |
| CN204408032U (en) | A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto | |
| CN106558932A (en) | A kind of rotor structure for improving 2 pole self-starting Air-gap Flux Density in Permanent Magnet Machines waveforms |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20140809 |
|
| EXPY | Termination of patent right or utility model |