CN209088777U - A kind of double-stator permanent magnet motor of interior external stator Length discrepancy - Google Patents
A kind of double-stator permanent magnet motor of interior external stator Length discrepancy Download PDFInfo
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- CN209088777U CN209088777U CN201821780928.6U CN201821780928U CN209088777U CN 209088777 U CN209088777 U CN 209088777U CN 201821780928 U CN201821780928 U CN 201821780928U CN 209088777 U CN209088777 U CN 209088777U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000004323 axial length Effects 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 10
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a kind of double-stator permanent magnet motors of interior external stator Length discrepancy, including the external stator, rotor and inner stator being successively socketed from outside to inside, the external stator includes external stator core and the external stator coil being wrapped in external stator core slot, the inner stator includes inner-stator iron core and the inner stator coil that is wrapped in inner-stator iron core slot, and the axial length of the inner-stator iron core is less than the axial length of external stator core.The electric machine structure of the utility model takes full advantage of the space inside motor, is easily installed, and improves power of motor density.
Description
Technical field
The utility model belongs to technical field of motors, more particularly, to a kind of double-stator permanent magnet electricity of interior external stator Length discrepancy
Machine.
Background technique
Double-stator permanent magnet motor generates rotating excitation field by interior external stator jointly, there is energy exchange gas inside and outside rotor
Gap can more fully utilize motor inner space in the case where outer diameter is certain, realize compared with traditional single stator motor
Bigger power density and higher efficiency.
But existing double-stator permanent magnet motor construction comes with some shortcomings: so far, for double-stator permanent magnet
For the axial topology of motor, interior external stator all uses identical iron core axial length.Such as Publication No.
The Chinese patent literature of CN108282120A discloses a kind of double-stator permanent magnet synchronous generator control system for wind-power electricity generation
System, engine block include casing, are equipped with inner stator and external stator in casing, external stator is paperwrapped in outside inner stator, inner stator
There are gap between external stator, inner stator is overlapped with the axis of external stator, and rotor, rotor are equipped between inner stator and external stator
For cup-shaped structure, inner wall is equipped with interior permanent magnet, and outer wall is equipped with outer permanent magnet.
Publication No. CN108258863A discloses a kind of double-stator structure of permanent magnet synchronous motor.The shell of this structure is set
Between drive end bearing bracket and rear end cap, the first stator is set in the housing circle, and shaft end is annulus end face, and shaft front end passes through front axle
It holds in the axis hole of drive end bearing bracket, seam allowance is equipped on the inside of rear end cap, fixing axle front end is set to the annulus end of shaft by inner bearing
Face inner ring, fixed shaft rear end are set to the seam allowance on the inside of rear end cap, and the second stator is set to fixing axle outer ring, and rear bearing inner ring is set to solid
Dead axle rear end outer ring, rear axle bearing sleeve inner ring are set to rear axle bearing outer-ring, and the front/rear end of rotor core is separately connected shaft end
Annulus end face and rear axle bearing sleeve end face and between the first stator and the second stator.
The inside and outside stator core of above-mentioned two Double-stator motor structure has been all made of identical axial length.But in fact,
Since intermediate rotor is cup-shaped structure, external stator has bigger axial space, the isometric design meeting of interior external stator than inner stator
The difficulty installed is caused, while also the power density of motor can be made not high.
Therefore, the axial topology for how designing Double-stator motor makes it have bigger torque density simultaneously and is easily installed
It is a problem to be solved by those skilled in the art.
Utility model content
In order to solve the problems existing in the prior art, the utility model provides a kind of bimorph transducer of interior external stator Length discrepancy forever
Magneto, structure is simple, easy for installation, improves power of motor density and unit permanent magnetism volume/torque density.
The technical solution adopted in the utility model is as follows:
A kind of double-stator permanent magnet motor of interior external stator Length discrepancy, including external stator, the rotor being successively socketed from outside to inside
And inner stator, the external stator include external stator core and the external stator coil being wrapped in external stator core slot, it is described in
Stator includes inner-stator iron core and the inner stator coil that is wrapped in inner-stator iron core slot, and the axial direction of the inner-stator iron core is long
Degree is less than the axial length of external stator core.
The axial length of inside and outside stator core differs, and inner-stator iron core axial length is shorter than external stator core, meets actual motion
Operating condition is easily installed simultaneously, takes full advantage of the space inside motor, improves the power density of motor.
Preferably, the inner-stator iron core and external stator core is formed by homogeneity silicon steel plate stacking, reduce double
The eddy-current loss of statodyne improves the efficiency of the generator.
Preferably, the rotor includes rotor core, is uniformly mounted on several outer layers of rotor core outer wall forever
Magnet and several internal layer permanent magnets for being uniformly mounted on rotor core inner wall.
Further, the outer layer permanent magnet is identical as the axial length of external stator core, the internal layer permanent magnet with
The axial length of inner-stator iron core is identical.That is axial length of the axial length of internal layer permanent magnet again smaller than outer layer permanent magnet.
Further, the internal layer permanent magnet and outer layer permanent magnet are symmetrical along rotor core.What is be mutually aligned is interior
Layer permanent magnet is consistent with the magnetizing direction of outer layer permanent magnet, is radial direction or parallel magnetization, adjacent internal layer permanent magnet and adjacent
Outer layer permanent magnet magnetizing direction it is opposite.
Preferably, there are outer air gaps between the external stator core and rotor, between the rotor and inner-stator iron core
There are interior air gap, the external stator core, rotor and inner-stator iron core are arranged concentrically.
The outer air gap and interior air gap of the utility model setting can carry out energy exchange, have higher power density, can
To realize bigger single-machine capacity, the radial spacing of air gap and the axial length of inside and outside air gap can be adjusted according to specific working condition requirement
Than.
The inner-stator iron core is related with the inside and outside diameter of stator to the selection of the axial length of external stator core, can basis
The loading condition of motor selects suitable length ratio.
The inner stator coil and external stator coil is separately mounted in the slot of inside and outside stator core.External stator coil
Axial effective length is identical as external stator core length, and inner stator coil axial direction effective length is identical as inner-stator iron core length.
The pole slot cooperation of inside and outside stator can be configured as needed, inner stator coil and external stator coil around component
It is not mounted on inside and outside stator core in suitable form, such as overlapping integral pitch winding, fractional-slot winding form.Coil around
Group is fixed, generates rotating excitation field after being passed through electric current.
The magnetic field that electric current generation is passed through in the magnetic field of permanent magnet generation and inside and outside stator coil passes through domestic and foreign work air gap phase
Interaction generates electromagnetic torque.
The utility model has the following beneficial effects:
1, inner-stator iron core axial length is shorter than external stator core axial length, is easily installed, and takes full advantage of in motor
The space in portion.
2, internal layer permanent magnet axial length and inner-stator iron core are axially isometric, less than the volume of outer layer permanent magnet, save
The dosage of total permanent magnet, reduces manufacturing cost.
3, the pole slot cooperation of inside and outside stator and winding configuration can be respectively set and optimize, and search out profile error solution.
4, inside and outside layer stator core axial length can optimize respectively, obtain globally optimal solution, improve power of motor
Density and unit permanent magnetism volume/torque density.
5, structure is simple, material especially permanent magnet handling ease.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double-stator permanent magnet motor of external stator Length discrepancy in the utility model；
Fig. 2 is 1/8 axial sectional diagrammatical view illustration of the utility model.
In figure: 1, electric machine stand, 2, external stator core, 3, external stator coil, 4, inner stator coil, 5, outer layer permanent magnet,
6, internal layer permanent magnet, 7, inner-stator iron core, 8, rotor core, 9, default submounts, 10, stator end cap.
Specific embodiment
It is clear in order to be more clear the purpose of this utility model, technical solution and advantageous effects, below in conjunction with attached
The technology contents and specific embodiment of the utility model are described in further detail in figure.It should be understood that being retouched in this specification
The specific embodiment stated is not intended to limit the utility model just for the sake of explaining the utility model.
As shown in Figure 1, a kind of double-stator permanent magnet motor of interior external stator Length discrepancy, comprising: electric machine stand 1, external stator iron
It is core 2, external stator coil 3, inner stator coil 4, outer layer permanent magnet 5, internal layer permanent magnet 6, inner-stator iron core 7, rotor core 8, interior
Stator support 9 and stator end cap 10.
External stator core 2 and electric machine stand 1 are fixed, and inner-stator iron core 7 and default submounts 9 are fixed, and default submounts 9 are logical
Stator end cap 10 is crossed to fix with 1 phase of electric machine stand.Outer layer permanent magnet 5 is mounted on rotor core 8 close to external stator core 2 one
Side, internal layer permanent magnet 6 are mounted on rotor core 8 close to 7 side of inner-stator iron core, outer layer permanent magnet 5,6 and of internal layer permanent magnet
Rotor core 8 collectively constitutes rotor.
External stator core 2 and 7 axial length of inner-stator iron core differ, and 7 axial length of inner-stator iron core is shorter than external stator iron
Core 2 meets actual operating mode while being easily installed, and takes full advantage of the space inside motor, and the power for improving motor is close
Degree.External stator core 2 and inner-stator iron core 7 are formed by silicon steel plate stacking simultaneously, to inhibit the eddy-current loss of motor, are improved
The efficiency of motor.In the present embodiment, external stator core 2 and inner-stator iron core 7 are flushed close to 10 side of stator end cap, but simultaneously
It is not limited to a kind of this positional relationship.According to the loading condition of motor, the positional relationship of external stator core 2 and inner-stator iron core 7 can
Do adjustment appropriate.In addition, external stator core 2 and 7 axial length of inner-stator iron core can also optimize combination respectively, reach
Globally optimal solution.
6 axial length of internal layer permanent magnet is axial isometric with inner-stator iron core 7, less than the axial length of outer layer permanent magnet 5, section
The dosage for having saved total permanent magnet, reduces manufacturing cost.
As shown in Fig. 2, external stator coil 3 and inner stator coil 4 distinguish coiling in outer stator core 2 and inner-stator iron core 7
On, wherein the winding configuration of inner stator coil 4 and external stator coil 3 can be respectively arranged design for real work situation, such as hand over
The forms such as folded integral pitch winding, fractional-slot winding.Coil windings are fixed, form rotating excitation field after being passed through electric current, drive rotor
The excitation field rotation that permanent magnet generates on iron core 8.Due to using outer layer permanent magnet 5 and the common excitation of internal layer permanent magnet 6, so
The utility model have the advantages that double-stator permanent magnet motor efficiently and high power density.
Internal layer permanent magnet 6 and 5 structure of outer layer permanent magnet are simple, easy to process, and the mode that magnetizes is radial direction or parallel magnetization, phase
The internal layer permanent magnet being mutually aligned is consistent with the magnetizing direction of outer layer permanent magnet, adjacent internal layer permanent magnet and adjacent outer layer permanent magnetism
The magnetizing direction of body is opposite.Inside and outside two working gas gaps are respectively kept between rotor and inside and outside stator core, inside and outside air gap
Length can optimize combination respectively, upgrade convenient for the capacity of motor.
Content described in this specification embodiment is only the explanation to utility model, is not to the utility model
It is limited, the protection scope of the utility model is not construed as being only limitted to particular content described in embodiment, practical at this
Made any modification, replacement and change etc., are all contained in the protection scope of the utility model within novel spirit and principle
It is interior.
Claims (8)
1. a kind of double-stator permanent magnet motor of interior external stator Length discrepancy, including be successively socketed from outside to inside external stator, rotor and
Inner stator, which is characterized in that the external stator includes external stator core and the external stator line being wrapped in external stator core slot
Circle, the inner stator include inner-stator iron core and the inner stator coil that is wrapped in inner-stator iron core slot, the inner stator iron
The axial length of core is less than the axial length of external stator core.
2. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 1, which is characterized in that described is outer fixed
Sub- iron core and inner-stator iron core are formed by silicon steel plate stacking.
3. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 1, which is characterized in that the rotor
Including rotor core, uniformly it is mounted on several outer layer permanent magnets of rotor core outer wall and is uniformly mounted in rotor core
Several internal layer permanent magnets of wall.
4. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 3, which is characterized in that the outer layer
Permanent magnet is identical as the axial length of external stator core, and the internal layer permanent magnet is identical as the axial length of inner-stator iron core.
5. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 3, which is characterized in that the internal layer is forever
Magnet and outer layer permanent magnet are symmetrical along rotor core.
6. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 3, which is characterized in that each outer layer is forever
Magnet is consistent with the magnetizing direction of corresponding internal layer permanent magnet, and adjacent outer layer permanent magnet and adjacent internal layer permanent magnet magnetize
It is contrary.
7. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 1, which is characterized in that the external stator
There are outer air gaps between iron core and rotor, and there are interior air gap between the rotor and inner-stator iron core, the external stator core turns
Son and inner-stator iron core are arranged concentrically.
8. the double-stator permanent magnet motor of interior external stator Length discrepancy according to claim 1, which is characterized in that the inner stator
Coil and external stator coil windings form are overlapping integral pitch winding or fractional-slot winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780928.6U CN209088777U (en) | 2018-10-31 | 2018-10-31 | A kind of double-stator permanent magnet motor of interior external stator Length discrepancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821780928.6U CN209088777U (en) | 2018-10-31 | 2018-10-31 | A kind of double-stator permanent magnet motor of interior external stator Length discrepancy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209088777U true CN209088777U (en) | 2019-07-09 |
Family
ID=67121688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821780928.6U Active CN209088777U (en) | 2018-10-31 | 2018-10-31 | A kind of double-stator permanent magnet motor of interior external stator Length discrepancy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209088777U (en) |
-
2018
- 2018-10-31 CN CN201821780928.6U patent/CN209088777U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310013 No. 866 Tong Road, Xihu District, Zhejiang, Hangzhou, Yuhang Co-patentee after: Shanghai Electric Wind Power Group Co., Ltd Patentee after: ZHEJIANG University Address before: 310013 No. 866 Tong Road, Xihu District, Zhejiang, Hangzhou, Yuhang Co-patentee before: SHANGHAI ELECTRIC WIND POWER GROUP Co.,Ltd. Patentee before: ZHEJIANG University |