CN109672312A - Permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor Download PDFInfo
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- CN109672312A CN109672312A CN201910123818.5A CN201910123818A CN109672312A CN 109672312 A CN109672312 A CN 109672312A CN 201910123818 A CN201910123818 A CN 201910123818A CN 109672312 A CN109672312 A CN 109672312A
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- stator punching
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 abstract description 7
- 230000005291 magnetic effect Effects 0.000 description 26
- 230000004907 flux Effects 0.000 description 19
- 238000004804 winding Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses present invention firstly provides a kind of stator punching, including stator punching ontology, annular is laid with stator tooth, the ratio between the internal diameter Di1 of the stator punching ontology and outer diameter D 1 are as follows: K on the stator punching ontology1=Di1/D1=0.50-0.55.The invention also discloses a kind of permanent magnet synchronous motors, by adjusting the structure of stator punching, the ratio between the internal-and external diameter of stator punching ontology is limited, under gas length certain situation, diameter of stator bore size also just determines rotor diameter size, and the rotary inertia of motor rotor can approximate representation are as follows:In formula, ρ is rotor material density, LefFor armature computational length, D1For stator outer diameter, Di1Diameter of stator bore, it follows that rotor moment of inertia and Proportional coefficient K1Biquadratic it is directly proportional, can effectively reduce the rotary inertia of rotor, improve dynamic responding speed, and reduce the load of the support end of motor, reduce small size air conditioner compressor motor vibration noise.
Description
Technical field
The invention belongs to technical field of motors, are specifically a kind of permanent magnet synchronous motor.
Background technique
Permasyn morot is mainly made of each component such as rotor, end cap and stator.Permasyn morot is determined
Minor structure and the structure of common induction conductivity are closely similar, and the maximum of rotor structure and asynchronous motor is not both in rotor
On be placed with the permanent magnet pole of high quality, according to the difference for the position for placing permanent magnet on rotor, permasyn morot is logical
Often it is divided into surface-type rotor structure and built-in rotor structure.
In recent years, country continues Promote Sustainable Development strategy, also gradually payes attention to the protection of natural environment.Correspondingly,
Various energy conservation and environmental protection technologies are in Rapid development stage.As the electric energy of clean energy resource, it is more and more applied to production life
Among work.New-energy automobile, parking electric air-conditioning etc., have also welcome rapid development period.New-energy automobile, caravan and truck
Air conditioner on car compressor be that battery capacity and use are certainly existed under existing battery technology using direct battery power
The contradiction that electric equipment needs to continue a journey for a long time, this requires the design of electrical motor of more high energy efficiency.Meanwhile interior environment requires to have
Very high comfort level, it is desirable that compressor operation is steady, quiet, this just proposes the vibration noise performance of compressor electric motor higher
Requirement.
Existing vehicle mounted electric DRIVEN BY AIR CONDITIONING COMPRESSOR motor, stator module mostly use three-phase integral pitch winding, rotor set
Part uses surface-type rotor magnetic circuit structural, and magnet steel protrudes outside rotor core, is fastened on rotor surface with stainless steel magnetic shield.Also have
Winding motor and rotor magnetic steel built-in motor are concentrated using fractional-slot in part, but usually borrow domestic air conditioning design of electrical motor, not
Special designing is carried out for the working environment of air conditioning for automobiles, is unable to satisfy that electric car is efficient, steady, mute etc. to be required.
Existing vehicle-mounted air conditioner compressor driving motor has following disadvantage:
1) due to being limited by motor space, need all to do volume as far as possible it is small, this also restrict motor outer diameter and
Number of stator slots；But MgO-ZrO_2 brick it is smaller when, motor slot ripples electromotive force number is lower, and numerical value is larger, these can all make
The induced electromotive force that winding generates cannot get good sinusoidal waveform, increase the added losses of motor；In addition, integer slot winding electricity
The cogging torque of machine is larger, increases the difficulty of electric motor starting, and influences the steady of motor operation.
2) it not carrying out according to the specific operation of vehicle-mounted air conditioner compressor for design, the inside and outside diameter ratio of motor stator is big, by
It is limited to stator outer diameter, stator stack height is also higher, causes rotor moment of inertia big, while bringing bigger vibration and noise, also not
Conducive to the dynamic response of motor.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of permanent magnet synchronous motor, by being adjusted to stator punching,
It can be effectively reduced rotor moment of inertia, while reducing rotor to the load of axis support end, reduce small size compressor of air conditioner
Motor oscillating noise.
In order to achieve the above objectives, the invention provides the following technical scheme:
The invention proposes a kind of permanent magnet synchronous motors, including stator and rotor, and the stator core of the stator is using fixed
Sub- punching is made, and the stator punching includes stator punching ontology, and annular is laid with stator tooth on the stator punching ontology,
The ratio between the internal diameter Di1 of the stator punching ontology and outer diameter D 1 are as follows:
K1=Di1/D1=0.50-0.55
The both ends of the rotor are respectively equipped with clump weight, and the clump weight is positioned close to the outer circle region of the rotor.
Further, the ratio between the internal diameter Di1 of the stator punching ontology and outer diameter D 1 are as follows:
K1=Di1/D1=0.53.
Further, the ratio between the wide L2 of facewidth L1/ yoke of the stator punching ontology are as follows:
K2=L1/L2=0.95-1.05.
Further, the ratio between the wide L2 of facewidth L1/ yoke of the stator punching ontology are as follows:
K2=L1/L2=0.992.
Further, it corresponds to be equipped with the stator tooth in the outer circle of the stator punching ontology and radially-inwardly be recessed
Groove, the centerline collineation of the center line of the groove and the corresponding stator tooth；The slot bottom of the groove is arc-shaped and institute
It is concentric to state stator punching ontology.
Further, the ratio between the outer circumference of the sum of all arc length of slot bottom of the groove and the stator punching ontology
Are as follows:
K3=Z*L3/ π D1=0.4-0.5
Wherein, Z is the quantity of stator tooth；L3 is the slot bottom arc length of groove.
Further, the ratio between the outer circumference of the sum of all arc length of slot bottom of the groove and the stator punching ontology
Are as follows:
K3=Z*L3/ π D1=0.435.
Further, the ratio between the wide L2 of yoke of the radial depth L4 of the groove and the stator punching ontology are as follows:
K4=L4/L2=0.2-0.25.
Further, the ratio between the wide L2 of yoke of the radial depth L4 of the groove and the stator punching ontology are as follows:
K4=L4/L2=0.236.
The beneficial effects of the present invention are:
Permanent magnet synchronous motor of the invention, by adjusting the structure of stator punching, by limiting in stator punching ontology
The ratio between outer diameter K1, under gas length certain situation, diameter of stator bore size also just determines rotor diameter size, motor rotor
Rotary inertia can approximate representation are as follows:
In formula, ρ is rotor material density, LefFor armature computational length, D1For stator outer diameter, Di1Thus diameter of stator bore may be used
Know, rotor moment of inertia and Proportional coefficient K1Biquadratic it is directly proportional, compared to it is traditional by the ratio between internal-and external diameter of motor be arranged
More than or equal to 0.60, to can effectively reduce the rotary inertia of rotor, dynamic responding speed is improved, and reduce the branch of motor
The load at end is supportted, small size air conditioner compressor motor vibration noise is reduced.
By limit the stator facewidth and yoke it is wide between ratio, in conjunction with actual electromagnetic field distribution inside motor and loss point
Analysis, is optimized by electromagnetic field, reduces the stator facewidth, increases groove area, and bigger line footpath copper wire can be used, and reduces copper loss；Make stator
Teeth portion, the distribution of yoke portion flux density in the reasonable scope, while meeting support strength requirement of the yoke portion to motor；
It is found through experiment that magnetic flux stator tooth toward stator yoke flow when, stator outer peripheral surface meeting corresponding with stator teeth
There are part magnetic flux density low ebb positions；And it is found by quantitative analysis, the value of magnetic flux density lowermost extent often insufficient stator
The 1% of teeth portion flux density, secondary lowermost extent magnetic flux density also insufficient teeth portion flux density 20%；This part iron core magnetic conductivity is not filled
Divide and utilizes；By optimizing magnetic circuit, under the premise of guaranteeing that stator and compressor cylinder interference fit intensity are enough, in stator outer circle
The groove being radially-inwardly recessed is processed, the access of certain area can be formed, is conducive to compressor internal oil passages and recycles；
By the way that clump weight is arranged in two ends of rotor, and clump weight is positioned close to the outer circle region of rotor, makes counterweight part
Divide center of gravity far from axis of rotation, linearly increases counterbalance moment, the weight of weight material is made to be fully used.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the structural schematic diagram of permanent magnet synchronous motor embodiment of the present invention；
Fig. 2 is the stator winding figure of the present embodiment；
Fig. 3 is the structural schematic diagram of stator punching；
Fig. 4 is the structural schematic diagram of the rotor of the present embodiment；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is the distribution map of magnet steel；
Fig. 7 is different K1When cogging torque waveform diagram；
Fig. 8 be stator outer circle not grooving when Distribution of Magnetic Field；
Distribution of Magnetic Field when Fig. 9 is stator outer circle grooving；
Figure 10 is stator yoke flux density curve comparison before and after grooving (heavy line is no grooving).
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It better understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The stator core of the permanent magnet synchronous motor of the present embodiment, including stator and rotor 4, stator uses stator punching system
At.As shown in figure 3, the stator punching of the present embodiment, including stator punching ontology 1, annular is laid on stator punching ontology 1
Stator tooth 2, the internal diameter D of stator punching ontology 1i1With outer diameter D1The ratio between are as follows:
K1=Di1/D1=0.50-0.55.
Preferably, the internal diameter D of the stator punching ontology 1 of the present embodimenti1With outer diameter D1The ratio between are as follows:
K1=Di1/D1=0.53.
The both ends of the rotor of the present embodiment are respectively equipped with clump weight 7, and clump weight 7 is positioned close to the outer circle region of rotor,
Make counterweight part center of gravity far from axis of rotation, linearly increase counterbalance moment, the weight of weight material is made to be fully used.
By adjusting the structure of stator punching, pass through the ratio between the internal-and external diameter of restriction stator punching ontology K1, in gas length
Under certain situation, diameter of stator bore size also just determines rotor diameter size, and the rotary inertia of motor rotor can approximate representation
Are as follows:
In formula, ρ is rotor material density, LefFor armature computational length, D1For stator outer diameter, Di1Thus diameter of stator bore may be used
Know, rotor moment of inertia and Proportional coefficient K1Biquadratic it is directly proportional, compared to it is traditional by the ratio between internal-and external diameter of motor be arranged
More than or equal to 0.60, to can effectively reduce the rotary inertia of rotor, dynamic responding speed is improved, and reduce the branch of motor
The load at end is supportted, small size air conditioner compressor motor vibration noise is reduced.
The parameters such as rotary inertia value, cogging torque peak value when analysis compares different K1 are as follows:
| K1 | 0.53 | 0.55 | 0.62 |
| Rotary inertia kg m^2 | 0.000217232 | 0.000244784 | 0.000399322 |
| Cogging torque peak value N*m | 0.3898 | 0.4416 | 0.9482 |
And different K are obtained by emulation1Cogging torque waveform diagram when value, as shown in fig. 7, respectively K1 value be 0.53,
0.55,0.62 when cogging torque comparison of wave shape, wherein fine line indicate K1Cogging torque waveform when=0.53, dotted line indicate
K1Cogging torque waveform when=0.55, heavy line indicate K1Cogging torque waveform when=0.62.
In addition, within the compressor, different designs are to vibration noise performance for the present embodiment also permanent magnet synchronous motor application
It influences as follows:
Emulation data and actual tests data can prove that, work as K1When value is 0.53 and 0.55, to motor cogging torque
There is very big weakening, so that the vibration noise of motor is reduced, the K of the present embodiment1Value preferably 0.53.
Further, the ratio between the wide L2 of facewidth L1/ yoke of stator punching ontology 1 are as follows: K2=L1/L2=0.95-1.05.It is preferred that
, the ratio between wide L2 of facewidth L1/ yoke of stator punching ontology 1 are as follows: K2=L1/L2=0.992.It is wider than yoke that conventional motor designs the facewidth
It is big, i.e. K2> 1.Actual electromagnetic field distribution and loss analysis, are optimized by electromagnetic field inside the present embodiment combination motor, are reduced
The stator facewidth increases groove area, and bigger line footpath copper wire can be used, and reduces copper loss；It is distributed in stator teeth, yoke portion flux density rationally
In range, while meeting support strength requirement of the yoke portion to motor.
By comparing with the wide L2=1.5 of conventional design facewidth L1/ yoke, under nominal operating conditions, motor copper, iron loss are poor
It is different to be as follows:
| K2=1.5 | K2=0.992 | |
| Copper loss W | 36.1136 | 24.7188 |
| Iron loss W | 9.9689 | 13.0674 |
| Sum W | 46.0825 | 37.7862 |
Motor copper, iron loss reduce about 18%, to achieve the purpose that promote motor energy efficiency.
Further, the groove 3 for being equipped with and being radially-inwardly recessed is corresponded with stator tooth 2 in the outer circle of stator punching ontology 1,
The centerline collineation of the center line of groove 3 and corresponding stator tooth 2.The slot bottom of the groove 3 of the present embodiment is arc-shaped to be rushed with stator
Piece ontology 1 is concentric.And the ratio between the sum of all arc length of slot bottom of groove 3 and the outer circumference of stator punching ontology 1 are as follows: K3=
Z*L3/πD1=0.4-0.5, wherein Z is the quantity of stator tooth 3；L3 is the slot bottom arc length of groove 3.Preferably, all grooves
The ratio between the sum of 3 arc length of slot bottom and the outer circumference of stator punching ontology 1 are as follows: K3=Z*L3/ π D1=0.435.The present embodiment
Groove 3 radial depth L4 and stator punching ontology 1 the ratio between the wide L2 of yoke are as follows: K4=L4/L2=0.2-0.25.Preferably,
The radial depth L4 of groove 3 and the ratio between the wide L2 of yoke of stator punching ontology 1 are as follows: K4=L4/L2=0.236.
It is found through experiment that magnetic flux stator tooth toward stator yoke flow when, stator outer peripheral surface meeting corresponding with stator teeth
There are part magnetic flux density low ebb positions；And it is found by quantitative analysis, the value of magnetic flux density lowermost extent often insufficient stator
The 1% of teeth portion flux density, secondary lowermost extent magnetic flux density also insufficient teeth portion flux density 20%；This part iron core magnetic conductivity is not filled
Divide and utilizes；By optimizing magnetic circuit, under the premise of guaranteeing that stator and compressor cylinder interference fit intensity are enough, in stator outer circle
The groove being radially-inwardly recessed is processed, the access of certain area can be formed, is conducive to compressor internal oil passages and recycles.When grooving, to the greatest extent
It is likely to reduced the influence to motor magnetic circuit, in case motor performance is by unnecessary loss.
It is compared from the angle of Distribution of Magnetic Field, takes Distribution of Magnetic Field when magnet steel face stator teeth to compare, grooving position
It is respectively positioned on the most weak region magnetic field strength B (1.15e-4~2.49e-1), influence on Harmonic Armature is minimized after making grooving.It is right
Than analysis flux density variation: after grooving, flux density increases flux density lower part when region belongs to not grooving, and high-magnetodensity section curve is basic
It is constant, it is maintained at the normal use section of silicon steel sheet；To make grooving to influence on Harmonic Armature minimum, as shown in Fig. 8 to Figure 10.
Wherein, Fig. 8 be stator outer circle not grooving when Distribution of Magnetic Field, Fig. 9 be stator outer circle grooving when Distribution of Magnetic Field, Figure 10 is grooving
Front and back stator yoke flux density curve comparison (heavy line is no grooving).
Further, the copper wire of the stator winding of stator is directly wound on stator tooth 2, shortens the length of winding overhang connection
Degree reduces material cost, using the mechanical production of high-volume, convenient for improving production efficiency and reducing human cost.Correspondingly, fixed
Sub- copper loss also decreases, and is conducive to the promotion of electric efficiency.
Further, rotor 4 includes rotor core 5, and 5 annular of rotor core is laid with magnet steel 6, and magnet steel 6 is towards stator
Outside and stator inner wall between be equipped with ferromagnetic material made of pole shoe.Protection of the permanent magnet by pole shoe, rotor magnetic circuit
Reluctance torque caused by the asymmetry of structure also contributes to improving the overload capacity and power density of motor, and is easy to
Weak magnetism speed expansion.The magnet steel 6 of the present embodiment uses rectangle magnet steel, and more traditional surface-mount type magnet steel more saves material cost.
Further, the permanent magnet synchronous motor MgO-ZrO_2 brick of the present embodiment are as follows:
Q=Z/ (2mp)=1/2
Wherein, q is MgO-ZrO_2 brick；
Z is number of stator slots, and Z=12；
M is the stator number of phases, and m=3；
P is number of pole-pairs, and 2P=8.
Rotor punching uses fractional-slot concentratred winding.So that the slot ripples electromotive force that series conductor incudes in a phase winding
Phase is different, is weakened so that it be made to synthesize electromotive force because of vector synthesis, therefore can obtain better electromotive force sinusoidal waveform.Together
When take fractional-slot concentratred winding to advantageously reduce cogging torque, magnetic field position locating for each notch of stator is different, so respectively
It is also different from the cogging torque phase of generation, thus, the effect of superposition not only increases fundamental wave cogging torque periodicity, and having can
The effect cancelled out each other can be generated, and the tooth socket number and position under traditional each magnetic pole of integer slot winding electric machine are identical
, they are identical in all extremely lower cogging torque phases generated, and the cogging torque of 2p pole, which stacks up, makes total cogging torque
It greatly increases.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (9)
1. a kind of permanent magnet synchronous motor, including stator and rotor (4), it is characterised in that: the stator core of the stator is using fixed
Sub- punching is made, and the stator punching includes stator punching ontology (1), and annular is laid on the stator punching ontology (1)
Stator tooth (2), it is characterised in that: the ratio between the internal diameter Di1 of the stator punching ontology (1) and outer diameter D 1 are as follows:
K1=Di1/D1=0.50-0.55
The both ends of the rotor are respectively equipped with clump weight (7), and the clump weight (7) is positioned close to the outer circle area of the rotor
Domain.
2. permanent magnet synchronous motor according to claim 1, it is characterised in that: the internal diameter Di of the stator punching ontology (1)
The ratio between 1 and outer diameter D 1 are as follows:
K1=Di1/D1=0.53.
3. permanent magnet synchronous motor according to claim 1 or 2, it is characterised in that: the facewidth of the stator punching ontology (1)
The ratio between wide L2 of L1/ yoke are as follows:
K2=L1/L2=0.95-1.05.
4. permanent magnet synchronous motor according to claim 3, it is characterised in that: the facewidth L1/ of the stator punching ontology (1)
The ratio between wide L2 of yoke are as follows:
K2=L1/L2=0.992.
5. permanent magnet synchronous motor according to claim 1 or 2, it is characterised in that: the outer circle of the stator punching ontology (1)
It is upper to correspond the groove (3) for being equipped with and being radially-inwardly recessed with the stator tooth (2), the center line of the groove (3) with it is corresponding
The stator tooth (2) centerline collineation.
6. permanent magnet synchronous motor according to claim 5, it is characterised in that: the slot bottom of the groove (3) is arc-shaped and institute
It is concentric to state stator punching ontology (1)；The sum of all arc length of slot bottom of the groove (3) and the stator punching ontology (1)
The ratio between outer circumference are as follows:
K3=Z*L3/ π D1=0.4-0.5
Wherein, Z is the quantity of stator tooth (3)；L3 is the slot bottom arc length of groove (3).
7. permanent magnet synchronous motor according to claim 6, it is characterised in that: the arc of the slot bottom of all grooves (3)
The sum of long the ratio between the outer circumference with the stator punching ontology (1) are as follows:
K3=Z*L3/ π D1=0.435.
8. permanent magnet synchronous motor according to claim 6, it is characterised in that: the radial depth L4 of the groove (3) and institute
State the ratio between the wide L2 of yoke of stator punching ontology (1) are as follows:
K4=L4/L2=0.2-0.25.
9. permanent magnet synchronous motor according to claim 8, it is characterised in that: the radial depth L4 of the groove (3) and institute
State the ratio between the wide L2 of yoke of stator punching ontology (1) are as follows:
K4=L4/L2=0.236.
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| CN2019100909924 | 2019-01-30 | ||
| CN201910090992 | 2019-01-30 |
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| CN201910123818.5A Pending CN109672312A (en) | 2019-01-30 | 2019-02-19 | Permanent magnet synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417226A (en) * | 2019-07-31 | 2019-11-05 | 吴晓婷 | A kind of electric-tool machine that multistage yoke is wide |
| CN113036971A (en) * | 2021-03-05 | 2021-06-25 | 江苏聚磁电驱动科技有限公司 | Single-wire multilayer winding distribution structure of motor and high-performance motor applying same |
| CN113872348A (en) * | 2021-10-14 | 2021-12-31 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration plant |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
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| JP2009240146A (en) * | 2008-03-05 | 2009-10-15 | Panasonic Corp | Rotor of brushless dc motor, compressor equipped with rotor, and apparatus with compressor mounted thereon |
| CN105071559A (en) * | 2015-09-15 | 2015-11-18 | 浙江伟康电机有限公司 | Stator punching sheet applied to external rotor permanent-magnet brushless motor of impeller type washing machine |
| CN106067700A (en) * | 2016-07-25 | 2016-11-02 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator punching and motor |
| CN106300723A (en) * | 2016-11-08 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor assembly, motor and use the compressor of this motor |
| CN107659008A (en) * | 2017-11-13 | 2018-02-02 | 安徽美芝精密制造有限公司 | Electric machine assembly, compressor and the refrigeration plant of compressor |
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| CN113036971A (en) * | 2021-03-05 | 2021-06-25 | 江苏聚磁电驱动科技有限公司 | Single-wire multilayer winding distribution structure of motor and high-performance motor applying same |
| CN113872348A (en) * | 2021-10-14 | 2021-12-31 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration plant |
| CN113872348B (en) * | 2021-10-14 | 2023-11-17 | 广东美芝制冷设备有限公司 | Stator structure, motor structure, compressor structure and refrigeration equipment |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
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