CN108683275A - Direct driving motor - Google Patents
Direct driving motor Download PDFInfo
- Publication number
- CN108683275A CN108683275A CN201810529916.4A CN201810529916A CN108683275A CN 108683275 A CN108683275 A CN 108683275A CN 201810529916 A CN201810529916 A CN 201810529916A CN 108683275 A CN108683275 A CN 108683275A
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- slot
- punching
- driving motor
- 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.)
- Pending
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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
-
- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
Abstract
The invention discloses a kind of direct driving motor, including stator and rotor, stator includes stator core, and the stator core includes the stator punching of multiple superpositions, and rotor includes rotor core, and rotor core includes the rotor punching of multiple superpositions；Stator punching includes the stator yoke of circular ring shape and multiple stator tooths for extending to center of circle direction of radial direction along stator yoke, stator slot is formed between two adjacent stator tooths, the outer circumference portion of stator yoke is arranged with stator technology groove and stator locating slot, the boss ratio d/D of stator punching is 0.5 0.8, the internal-round gear of stator tooth is 1.8 2.5 away from the ratio between arc length S and facewidth b, and the ratio between the facewidth b of stator tooth and the width c of the stator yoke are 0.8 2；The rotor punching includes multiple rotor tooths of the rotor yoke of circular ring shape and the radially outward circumferencial direction extension along the rotor yoke, and rotor slot is formed between adjacent two rotor tooths；The stator slot and the rotor slot are coordinated using nearly slot.
Description
Technical field
The present invention relates to technical field of motors, and in particular to a kind of direct driving motor.
Background technology
DDR (directly driving rotation) motor is that motor is directly connected in load by one kind under drive system control, realization pair
The motor of load directly driven.Its feature is that torque is big, positioning accuracy is high, stable movement, fast response time, vibration is low, makes an uproar
Sound is few, energy saving, long lifespan, the excellent motor characteristic such as easy to maintenance.Direct driving motor mostly uses conventional motors technical solution at present
Distributed winding, number of stator slots are much larger than number of magnetic poles to design feature as follows, magnetic pole arc angle, and Gas-gap Magnetic Field Resonance Wave content is big.It is empty
Between air-gap harmonic magnetic field can cause back-emf harmonic wave and torque pulsation, strong influence direct driving motor steadily control and operation,
Especially it is embodied in the control performance of the low speed segment of direct driving motor.In addition because motor gas-gap magnetic field harmonics will produce harmonic wave exciting
Power, it is relatively low so as to cause electric efficiency, vibration is big, electromagnetic noise is big.
In addition traditional large inertia high-speed direct-drive rotor generally uses nonmagnetic steel set or high strength fibre line, by Surface Mount
Magnetic shoe fixation prevents its high speed from being fallen off by centrifugation, and either manufacturing process is complicated or because nonmagnetic steel covers intersity limitation for such structure
System, steel bushing thickness reach 1.5mm or more generally in 0.5mm or more so as to cause the air gap of magneto, are keeping motor demagnetization energy
Power and air-gap field density, it is necessary to permanent magnetism body thickness is thickeied, to bring the utilization rate of permanent magnet relatively low and air-gap field distortion
It is difficult to reach effective sinusoidal magnetic field, Gas-gap Magnetic Field Resonance Wave content is big.
And improves Gas-gap Magnetic Field Resonance Wave generally use rotor magnetic pole at present and cut arc, skewed-rotor, improve the skills such as winding layout
Art scheme, although preferable air-gap field waveform and winding back emf waveform can be obtained to a certain extent, for high-precision,
High efficiency, high torque density direct driving motor be difficult to reach using above-mentioned Technological improvement plan.Its basic reason be stator and
There are problems for the cooperation of rotor tooth socket.It can be seen that a kind of optimization tooth socket fit of design and stator and rotor magnetic circuit waveform is straight
Drive the production problem that motor is urgently to be resolved hurrily.
Invention content
In view of this, the purpose of the present invention is to provide a kind of direct driving motor, by optimizing tooth socket fit and stator and turning
Sub- magnetic circuit waveform, to overcome, back-emf distortion is serious, harmonic content is big, torque pulsation is big, motor in existing direct-drive motor technology
The problems such as control accuracy and unstable operation.
To achieve the above object, the present invention provides a kind of direct driving motor, including stator and rotor, the stator include stator
Iron core, the stator core include the stator punching of multiple superpositions, and the rotor includes rotor core, and the rotor core includes
The rotor punching of multiple superpositions；The stator punching includes the stator yoke of circular ring shape and along the radial to the center of circle of the stator yoke
Multiple stator tooths that direction extends form stator slot between adjacent two stator tooths, and the outer circumference portion of the stator yoke sets up separately
There are stator technology groove and stator locating slot, the boss ratio d/D of the stator punching is 0.5-0.8, the inner circle of the stator tooth
The ratio between tooth pitch arc length S and facewidth b are that the ratio between the width of 1.8-2.5, the facewidth b of the stator tooth and the stator yoke c are 0.8-
2；The rotor punching includes multiple turns of the rotor yoke of circular ring shape and the radially outward circumferencial direction extension along the rotor yoke
Sub- tooth forms rotor slot between adjacent two rotor tooths；The stator slot and the rotor slot are coordinated using nearly slot.
Preferably, the internal diameter of the stator punching is 20-650mm, outer diameter 40-750mm.
Preferably, the facewidth of the stator tooth is 2-25mm, and the width of the stator yoke is 2.5-30mm, corresponding described
The arc length of stator tooth is 4-60mm.
Preferably, the quantity of the stator slot is 6-72, and is 3 common multiple；The quantity of the rotor slot is 2-78, and
For 2 common multiple；The quantity of the stator slot and the difference of the quantity of the rotor slot are not more than 6.
Preferably, the quantity of the stator technology groove is 2-12, width 5-20mm, depth 1.5-10mm, described
It is equipped with the first salient point and the first symmetrical groove body in stator technology groove, the height of first salient point is 0.5-3.5mm, described first
The highest point of salient point is not less than 0.75mm at a distance from the circumference of the stator punching.
Preferably, the bottom of the rotor slot is plane；Or the bottom of the rotor slot is curved surface, and the curved surface
On same central axis, eccentricity is more than 50mm in the center of circle of the inner periphery of the center of circle and the rotor punching.
Preferably, rotor technology groove is equipped in the rotor slot.
Preferably, the second salient point and the second symmetrical groove body, the height of second salient point are equipped in the rotor technology groove
For 0.5-3.5mm, the highest point of second salient point is not less than 0.75mm at a distance from the circumference of the rotor punching, described turn
The width of sub- technology groove is 5-20mm, depth 1.5-10mm.
Preferably, the described second symmetrical groove body is plane；Or the second symmetrical groove body is curved surface, and the curved surface
On same central axis, eccentricity is more than 50mm in the center of circle of the inner periphery of the center of circle and the rotor punching.
Preferably, two adjacent rotor tooth forms at angle between teeth angle, θ be 5-15 °.
The present invention direct driving motor by rational stator tooth (slot) and rotor slot cooperation, rotor magnetic pole cut arc optimization and
The magnetic structure Optimum combinatorial design of stator and rotor, obtains good magnetic field path, and then obtains ideal air-gap field
Waveform and back-emf sinusoidal waveform reduce vibration noise of motor to reduce motor harmonic wave exciting force, reduce torque arteries and veins
It is dynamic to obtain good control and stable movement performance.
Further, direct driving motor of the invention by optimize stator and rotor magnetic circuit, it is gentle in reasonable magnetic structure
Groove area big as possible is obtained under gap magnetic field conditions, in the case of same groove utilization rate, the copper wire that big specification can be used carries out
Coiling reduces copper wastage and iron loss to reduce the resistance of motor, improves electric efficiency and specific volume power density and turns
Square density exports, and improves the straight performance for driving electric rotating machine (DDR).
Description of the drawings
Fig. 1 is the structural schematic diagram of the stator and rotor punching of the direct driving motor of the present invention；
Fig. 2 is the structural schematic diagram of the stator punching of the direct driving motor of the present invention；
Fig. 3 is the close-up schematic view of the stator punching of the direct driving motor of the present invention；
Fig. 4 is the structural schematic diagram of the rotor punching of the direct driving motor of the present invention；
Fig. 5 is the close-up schematic view I of the rotor punching of the direct driving motor of the present invention；
Fig. 6 is the close-up schematic view II of the rotor punching of the direct driving motor of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
As depicted in figs. 1 and 2, direct driving motor of the invention, including stator and rotor, the stator include stator core,
The stator core includes the stator punching 1 of multiple superpositions, and the rotor includes rotor core, and the rotor core includes multiple
The rotor punching 2 of superposition；The stator yoke 13 of stator punching 1 including circular ring shape and along the radial to center of circle side of the stator yoke 13
To multiple stator tooths 11 of extension, stator slot 12, the outer circumference of stator yoke 13 are formed between adjacent two stator tooths 11
Equipped with stator technology groove 14 and stator locating slot 15, the boss ratio d/D of stator punching 1 is 0.5-0.8, the inner circle of stator tooth 11
The ratio between tooth pitch arc length S and facewidth b are 1.8-2.5, and the ratio between the facewidth b of stator tooth 11 and the width c of stator yoke 13 are 0.8-2；Such as
Shown in Fig. 3, the rotor yoke of rotor punching 2 including circular ring shape and the radially outward circumferencial direction along the rotor yoke extend multiple
Rotor tooth 22 forms rotor slot 21 between adjacent two rotor tooths 22；Stator slot 12 and rotor slot 21 are coordinated using nearly slot, i.e.,
Number of stator slots and rotor slot number are close, and rotor slot number is slightly less than number of stator slots, and between the two cooperatively form virtual magnetic
Watts 3.The present invention direct driving motor by rational stator tooth (slot) and rotor slot cooperation, rotor magnetic pole cut arc optimization and stator
With the magnetic structure Optimum combinatorial design of rotor, good magnetic field path is obtained, and then obtains ideal air-gap field waveform
With back-emf sinusoidal waveform, reduces vibration noise of motor to reduce motor harmonic wave exciting force, reduce torque pulsation and obtain
To good control and stable movement performance.
The internal diameter d of the stator punching 1 of the present invention is 20-650mm, outer diameter D 40-750mm；The facewidth b of stator tooth 11 is
The width c of 2-25mm, stator yoke 13 are 2.5-30mm, and the arc length of corresponding stator tooth 11 is 4-60mm；The quantity N of stator slot 12
For 6-72, and the common multiple that N is 3, two stator tooths, 11 angles are 360 °/N；The quantity of rotor slot 21 is 2-78, and is 2
Common multiple；The quantity of stator slot 12 and the difference of the quantity of rotor slot 21 are not more than 6.
As shown in figure 3, the quantity of the stator technology groove 14 of the present invention is 2-12, width 5-20mm, depth 1.5-
10mm, stator technology groove 14 is interior to be equipped with the first salient point 141 and the first symmetrical groove body 142, and the height of the first salient point 141 is 0.5-
The highest point of 3.5mm, the first salient point 141 are not less than 0.75mm at a distance from the circumference of stator punching 1.The effect of stator technology groove
For the full circle of original excircle is divided into arc section, stress release is effectively guaranteed inner circle to technology groove after outer circle punching press
With the concentricity of outer circle；First salient point 141 is welded in stator technology groove 14, and the first salient point 141 has been effectively ensured and has been less than stator
The outer circle 0.75mm or more of punching 1, solder joint are stored in welding groove.The quantity of stator locating slot 15 is usually arranged as 1~5,
Its radius is 2~8mm, and stator locating slot 15 is in one-shot punching using wherein 1~2 stator locating slot 15 and stator punching 1
The skewed stator slot Sk met the requirements is adjusted out in outer circle cooperation under specific iron core thickness, and general Sk values are between 0~1.5.
Self-clinching wedge may be used in stator punching 1 or self-clinching circle riveting point mode forms the stator core met the requirements.
As shown in figure 4, the bottom plane of the rotor slot 21 of the present invention；Or the bottom of the rotor slot is curved surface, and institute
The center of circle of the center of circle of curved surface and the inner periphery of rotor punching 2 is stated on same central axis, eccentricity is more than 50mm, rotor slot 21
It is interior to be equipped with rotor technology groove 23, as shown in figure 5, the second salient point 231 and the second symmetrical groove body 232 are equipped in rotor technology groove 23,
The height of second salient point 231 is 0.5-3.5mm, and the highest point of the second salient point 231 is not less than at a distance from the circumference of rotor punching 2
The width of 0.75mm, rotor technology groove 23 are 5-20mm, depth 1.5-10mm；Second symmetrical groove body 232 be plane or curved surface,
And the center of circle of the inner periphery of the center of circle of curved surface and rotor punching 2, on same central axis, eccentricity is more than 50mm.Rotor punching
It is 5-15 ° that 2 adjacent two rotor tooths 22 formation, which prevent the angle between teeth that magnetic shoe falls off, angle, θ,；It can not also be set in rotor slot 21
There is rotor technology groove, as shown in Figure 6.
Design is scientific and reasonable for the direct driving motor of the present invention, and shape is combined by the stator and rotor punching of structure of the embodiment of the present invention
At motor, stator winding mode, instead of traditional fraction winding method, significantly reduces and produced by concentratred winding mode
Turn-to-turn in journey, pressure resistance are bad and other issues.Motor gas-gap can obtain preferable air-gap field waveform, and harmonic content is relatively low, around
Sinusoidal is presented in group back-emf.Electric efficiency can be effectively improved, motor control and traveling comfort is improved, reduces
Torque pulsation reduces motor oscillating and noise.Groove face big as possible is obtained under reasonable magnetic structure and air gap magnetic field conditions
Product, in the case of same groove utilization rate St, the copper wire that big specification can be used carries out coiling, to reduce the resistance of motor, drop
Low copper wastage and iron loss improve electric efficiency and specific volume power density and torque density output, improve straight drive electric rotating
The performance of machine (DDR).
Obviously, those skilled in the art can make to the present invention without departing from the spirit and scope of the present invention
Embodiment various modifications and change.In this manner, if these modifications and changes be in the present invention claim and its
In the range of equivalent form, then the present invention, which also aims to, covers these modifications and changes.Word " comprising " is not excluded for not wanting in right
The presence for the other element or steps listed in asking.The simple thing that certain measures are recorded in mutually different dependent claims
Do not indicate that the combination of these measures is consequently not used for making a profit in fact.Any reference numeral in claim should not be regarded as limited to
Range.
Claims (10)
1. a kind of direct driving motor, which is characterized in that including stator and rotor, the stator includes stator core, the stator iron
Core includes the stator punching of multiple superpositions, and the rotor includes rotor core, and the rotor core includes the rotor of multiple superpositions
Punching；The stator punching include circular ring shape stator yoke and along the stator yoke it is radial extend to center of circle direction it is multiple
Stator tooth, forms stator slot between adjacent two stator tooths, the outer circumference portion of the stator yoke be arranged with stator technology groove and
The boss ratio d/D of stator locating slot, the stator punching is 0.5-0.8, and the internal-round gear of the stator tooth is away from arc length S and the facewidth
The ratio between b is 1.8-2.5, and the ratio between the facewidth b of the stator tooth and the width c of the stator yoke are 0.8-2；The rotor punching packet
Multiple rotor tooths of the rotor yoke of circular ring shape and the radially outward circumferencial direction extension along the rotor yoke are included, adjacent two turn
Rotor slot is formed between sub- tooth；The stator slot and the rotor slot are coordinated using nearly slot.
2. direct driving motor according to claim 1, which is characterized in that the internal diameter of the stator punching is 20-650mm, outside
Diameter is 40-750mm.
3. direct driving motor according to claim 1, which is characterized in that the facewidth of the stator tooth is 2-25mm, described fixed
The width of sub- yoke is 2.5-30mm, and the arc length of the corresponding stator tooth is 4-60mm.
4. direct driving motor according to claim 1, which is characterized in that the quantity of the stator slot is 6-72, and is 3 public affairs
Multiple；The quantity of the rotor slot is 2-78, and is 2 common multiple；The quantity of the quantity of the stator slot and the rotor slot
Difference be not more than 6.
5. direct driving motor according to claim 1, which is characterized in that the quantity of the stator technology groove is 2-12, wide
Degree is 5-20mm, depth 1.5-10mm, is equipped with the first salient point and the first symmetrical groove body in the stator technology groove, described first
The height of salient point is 0.5-3.5mm, and the highest point of first salient point is not less than at a distance from the circumference of the stator punching
0.75mm。
6. direct driving motor according to claim 1, which is characterized in that the bottom of the rotor slot is plane；Or it is described
The bottom of rotor slot is curved surface, and the center of circle of the inner periphery of the center of circle of the curved surface and the rotor punching is in same central axis
On, eccentricity is more than 50mm.
7. direct driving motor according to claim 1, which is characterized in that be equipped with rotor technology groove in the rotor slot.
8. direct driving motor according to claim 7, which is characterized in that be equipped with the second salient point and the in the rotor technology groove
The height of two symmetrical groove bodies, second salient point is 0.5-3.5mm, highest point and the rotor punching of second salient point
The distance of circumference is not less than 0.75mm, and the width of the rotor technology groove is 5-20mm, depth 1.5-10mm.
9. direct driving motor according to claim 8, which is characterized in that the second symmetrical groove body is plane；Or it is described
Second symmetrical groove body is curved surface, and the center of circle of the inner periphery of the center of circle of the curved surface and the rotor punching is in same central axis
On, eccentricity is more than 50mm.
10. direct driving motor according to claim 1, which is characterized in that two adjacent rotor tooth forms between cog
The angle, θ at angle is 5-15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529916.4A CN108683275A (en) | 2018-05-29 | 2018-05-29 | Direct driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529916.4A CN108683275A (en) | 2018-05-29 | 2018-05-29 | Direct driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108683275A true CN108683275A (en) | 2018-10-19 |
Family
ID=63808599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810529916.4A Pending CN108683275A (en) | 2018-05-29 | 2018-05-29 | Direct driving motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108683275A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022068052A1 (en) * | 2020-09-29 | 2022-04-07 | 安徽美芝精密制造有限公司 | Electric motor, compressor and refrigeration device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201252457Y (en) * | 2008-09-09 | 2009-06-03 | 何雪峰 | Rare earth permanent single-phase synchronous generator with high-precision voltage stabilization |
| CN201466935U (en) * | 2009-07-20 | 2010-05-12 | 沈建生 | Outer rotor three-phase asynchronous motor |
| CN203301332U (en) * | 2012-12-31 | 2013-11-20 | 浙江迈雷科技有限公司 | Permanent magnet synchronous motor used for air conditioning compressor |
| CN203352305U (en) * | 2013-05-31 | 2013-12-18 | 中山大洋电机制造有限公司 | Motor stator punching sheet and plastic packaging motor using same |
| CN104810941A (en) * | 2014-01-28 | 2015-07-29 | 环一军 | Stator sheet of motor of washing machine |
| CN204696815U (en) * | 2015-07-03 | 2015-10-07 | 宁波华誉电机有限公司 | Permanent-magnetic synchronous motor stator structure |
| CN107332370A (en) * | 2017-08-18 | 2017-11-07 | 苏州德迈科电机技术有限公司 | A kind of magnetic structure of intelligence equipment high-performance permanent magnet synchronous servo motor |
-
2018
- 2018-05-29 CN CN201810529916.4A patent/CN108683275A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201252457Y (en) * | 2008-09-09 | 2009-06-03 | 何雪峰 | Rare earth permanent single-phase synchronous generator with high-precision voltage stabilization |
| CN201466935U (en) * | 2009-07-20 | 2010-05-12 | 沈建生 | Outer rotor three-phase asynchronous motor |
| CN203301332U (en) * | 2012-12-31 | 2013-11-20 | 浙江迈雷科技有限公司 | Permanent magnet synchronous motor used for air conditioning compressor |
| CN203352305U (en) * | 2013-05-31 | 2013-12-18 | 中山大洋电机制造有限公司 | Motor stator punching sheet and plastic packaging motor using same |
| CN104810941A (en) * | 2014-01-28 | 2015-07-29 | 环一军 | Stator sheet of motor of washing machine |
| CN204696815U (en) * | 2015-07-03 | 2015-10-07 | 宁波华誉电机有限公司 | Permanent-magnetic synchronous motor stator structure |
| CN107332370A (en) * | 2017-08-18 | 2017-11-07 | 苏州德迈科电机技术有限公司 | A kind of magnetic structure of intelligence equipment high-performance permanent magnet synchronous servo motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022068052A1 (en) * | 2020-09-29 | 2022-04-07 | 安徽美芝精密制造有限公司 | Electric motor, compressor and refrigeration device |
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Application publication date: 20181019 |
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