CN208337254U - Motor stator punching sheet, motor stator and motor - Google Patents
Motor stator punching sheet, motor stator and motor Download PDFInfo
- Publication number
- CN208337254U CN208337254U CN201821122072.3U CN201821122072U CN208337254U CN 208337254 U CN208337254 U CN 208337254U CN 201821122072 U CN201821122072 U CN 201821122072U CN 208337254 U CN208337254 U CN 208337254U
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- motor stator
- motor
- stator punching
- arc groove
- rotor
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- 238000004080 punching Methods 0.000 title claims abstract description 62
- 230000005611 electricity Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 54
- 229910052742 iron Inorganic materials 0.000 abstract description 27
- 230000010349 pulsation Effects 0.000 abstract description 9
- 230000001603 reducing effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 14
- 230000004907 flux Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a motor stator is towards piece, motor stator, motor. The motor stator punching sheet comprises a tooth part, wherein an arc groove is formed in the side wall, facing one side of a motor rotor, of the tooth part, the tooth part is provided with a first symmetric shaft in the radial direction of the motor stator punching sheet, the arc groove is symmetric in the circumferential direction of the motor stator punching sheet relative to the first symmetric shaft, and the arc wall of the arc groove is an inferior arc wall. According to the utility model discloses a motor stator is towards piece, motor stator, motor when further reducing the iron loss of motor and rotate the pulsation, promote motor efficiency, makes equivalent air gap increase range is less to can reduce the torque pulsation, reduce the electromagnetic noise of motor.
Description
Technical field
The utility model belongs to technical field of motor manufacture, and in particular to a kind of motor stator punching, motor stator, electricity
Machine.
Background technique
Reluctance type synchronous motor is to be developed to wind equipped with cage modle cast aluminium Lai, rotor by same cage type asynchronous motor,
But it is equipped with reactive tank corresponding with stator poles (the only effect of salient-pole portion, no excitation winding and permanent magnet), is used to
Generate Reluctance synchronous torque.Reluctance type synchronous motor is mainly used for industrial and agricultural production, communications and transportation, national defence, business and household
The fields such as electric appliance, medical appliance equipment.In order to reduce the iron loss and motor torque ripple of stator core, disclose in the prior art
A variety of modes in stator teeth fluting, and these slots are shaping slot or semi-circular groove mostly, and the specific size of slot is closed
System does not further investigate, since slotting position is directly facing rotor air gap, and it is understood that the benchmark of rotor air gap
Size is smaller, and therefore, the slight change of the size of slot will bring completely different technical effect, is based on this, proposes that this is practical new
Type.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of motor stator punching, motor stator, electricity
Machine makes the effective air gap increasing degree while iron loss and rotation pulsation for further decreasing motor, promoting electric efficiency
It is smaller, so as to reduce torque pulsation, reduce the electromagnetic noise of motor.
To solve the above-mentioned problems, the utility model provides a kind of motor stator punching, including teeth portion, the teeth portion direction
Arc groove is configured on the side wall of rotor side, the teeth portion has first pair in the motor stator punching radially
Claim axis, the arc groove is symmetrical in the circumferential direction of the motor stator punching about first symmetry axis, the arc groove
Circular arc wall is minor arc wall.
Preferably, the motor stator punching further includes interconnecting piece, and the interconnecting piece is set to the teeth portion away from motor
The side of rotor, the interconnecting piece have the width W0 in the motor stator punching circumferential direction, and the arc groove has groove width W1,
W1/W0=1~1.25.
Preferably, W1/W0=1~1.15.
Preferably, diameter of the center of circle of motor stator punching described in the distance of center circle of the arc groove in the motor stator punching
Projector distance on face is D0, and the radius of the arc groove is that the teeth portion has pole shoe, and the diameter of the pole shoe is (D0
+ D1-0.5 × DI1)/W1=0.05~0.15.
Preferably, (D0+D1-0.5 × DI1)/W1=1.
Preferably, when the motor stator punching and rotor pairing assemble when, the motor stator punching with it is described
Forming air gap between rotor, the air gap is GAP in the width radially of the motor stator punching, (D0+D1-0.5 ×
DI1)/GAP=0.25~0.5.
Preferably, (D0+D1-0.5 × DI1)/GAP=0.25~0.35.
The utility model also provides a kind of motor stator, including multiple above-mentioned motor stator punchings.
The utility model also provides a kind of motor, including above-mentioned motor stator.
A kind of motor stator punching provided by the utility model, motor stator, motor, by rectangular channel in the prior art,
Half slot is improved to the arc groove with minor arc wall, increases equivalent magnetic resistance, reduces maximum flux density, it is fixed can be substantially reduced motor
The iron loss of son, improves electric efficiency；It is fixed to turn when the motor stator punching is assembled in motor and the rotor is aligned
Effective air gap increases between son, and the amplitude of stator teeth and rotor radial suction accordingly reduces, simultaneously as the minor arc wall is in institute
It is in flat for stating in the circumferential direction of motor stator punching, keeps the effective air gap increasing degree smaller, so as to reduce torque arteries and veins
It is dynamic, and torque pulsation is radially and tangentially declining, and reduces the electromagnetic noise of motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the motor stator punching of the utility model embodiment；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the signal in the motor of another embodiment of the utility model under the relative rotation state of rotor and stator
Figure；
Fig. 4 is the schematic diagram in Fig. 3 under rotor and stator aligned condition；
Fig. 5 is the change curve of motor torque output and iron loss with (D0+D1-0.5 × DI1)/GAP；
Fig. 6 is the change curve of motor torque output and iron loss with W1/W0；
Fig. 7 is the change curve of motor torque and ripple factor with (D0+D1-0.5 × DI1)/W1.
Appended drawing reference indicates are as follows:
1, teeth portion；11, arc groove；2, interconnecting piece；3, portion is gripped；10, motor stator；20, rotor.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to 7, embodiment according to the present utility model provides a kind of motor stator punching, especially suitable
For in synchronous magnetic resistance motor, including teeth portion 1, the teeth portion 1 towards being configured with arc groove 11 on the side wall of rotor side,
The teeth portion 1 has the first symmetry axis in the motor stator punching radially, and the arc groove 11 is about described first pair
Claim axis symmetrical in the circumferential direction of the motor stator punching, the circular arc wall of the arc groove 11 is minor arc wall namely the circular arc
Slot 11 is in the circumferential direction of the motor stator punching in flat.By rectangular channel in the prior art, semicircle in the technical solution
Slot is improved to the arc groove 11 with minor arc wall, increases equivalent magnetic resistance, reduces maximum flux density, can be substantially reduced motor stator
Iron loss, improve electric efficiency；When the motor stator punching is assembled in motor and the rotor is aligned, rotor
Between effective air gap increase, the amplitude of stator teeth and rotor radial suction accordingly reduces, simultaneously as the minor arc wall is described
In flat in the circumferential direction of motor stator punching, keep the effective air gap increasing degree smaller, so as to reduce torque pulsation,
And torque pulsation is radially and tangentially declining, and reduces the electromagnetic noise of motor.
The design alternative of the groove width of the arc groove 11 for iron loss, flux density amplitude and torque output influence very
Greatly, when groove width is too small, the less effective of iron loss is reduced, because the magnetic line of force can circulate from the side of the slot, is still generated higher
Flux density amplitude, and it is wider when, the teeth portion 1 pole shoe power output part also due to saturation and effective air gap increase and make
The output degradation of torque, in order to which more balanced solves the problems, such as this, it is preferable that the motor stator punching further includes connecting
Socket part 2, the interconnecting piece 2 are set to the side that the teeth portion 1 deviates from rotor, and the interconnecting piece 2 has in the motor
The width W0 of stator punching circumferential direction, the arc groove 11 have groove width W1, as shown in fig. 6, T1 is to use the arc groove in figure
The torque output of 11 motor stator punching, T0 are the torque output for not using the motor stator punching of the arc groove 11,
Pfe1 is using the iron loss of the motor stator punching of the arc groove 11, and Pfe0 is the motor stator for not using the arc groove 11
The iron loss of punching, solid line represent the ratio of torque output T1 and T2 with the change curve of W1/W0, chain-dotted line represent iron loss Pfe1 with
The ratio of Pfe0 with W1/W0 change curve, it can be seen that the ratio of the ratio and Pfe1 of the T1 and T2 and Pfe0 with
There is downward trend in W1/W0, and as W1/W0=1~1.25, iron loss can be decreased obviously, while torque output decline is unobvious,
Play preferable reduction iron loss effect, when W1/W0 is greater than 1.5, torque output rapid decrease.Further, W1/W0=1
When~1.15, iron loss reducing effect and torque output are all more ideal.
As shown in fig. 7, PK1 is using the ripple factor of the motor stator punching of the arc groove 11 in figure, PK0 is not
Using the ripple factor of the motor stator punching of the arc groove 11, solid line represents the ratio of torque output T1 and T2 with (D0+
D1-0.5 × DI1)/W1 change curve, chain-dotted line represent the ratio of ripple factor PK1 and PK0 with (D0+D1-0.5 × DI1)/
The change curve of W1, it is preferable that the center of circle of motor stator punching described in the distance of center circle of the arc groove 11 is in the motor stator
Projector distance on the sagittal plane of punching is D0, and the radius of the arc groove 11 is D1, and the teeth portion 1 has pole shoe, the pole
The diameter of boots is DI1, (D0+D1-0.5 × DI1)/W1=0.05~0.15；Further, (D0+D1-0.5 × DI1)/W1
=1.Specific restriction has been carried out to the groove width W1 of the arc groove and groove depth (D0+D1-0.5 × DI1) in the technical solution, when
When (D0+D1-0.5 × DI1) value is excessive or W1 is too small, it will lead at the arc groove 11 there are the mutation of apparent air gap, hold
Easily lead to the rising of torque pulsation；When the groove depth (D0+D1-0.5 × DI1) of the arc groove and the ratio of groove width W1 are in 0.05
When~0.15, the arc groove 11 can be effectively improved the sine degree of air gap magnetic density waveform, avoid the peak of sine wave from protruding, make
Increase at 3 subharmonic, and torque pulsation can be further decreased, when compared to the motor stator punching for not using the arc groove 11
Improve 20% or so.
As shown in figure 5, solid line represents the ratio of torque output T1 and T2 with the change of (D0+D1-0.5 × DI1)/GAP in figure
Change curve, chain-dotted line represents the ratio of iron loss Pfe1 and Pfe0 with the change curve of (D0+D1-0.5 × DI1)/GAP, can see
There is downward trend with (D0+D1-0.5 × DI1)/GAP to the ratio and Pfe1 of the T1 and T2 and the ratio of Pfe0, when
When the arc groove 11 is deeper, effective air gap increasing degree is excessive, can seriously affect torque output.And the variation of iron loss with
After the groove depth increase to a certain extent of the arc groove 11, although flux density can reduce, due to flux density can in a tooth by
To significantling change for effective air gap, change frequency is also increasing, therefore can't decline to a great extent again.When the motor stator rushes
When piece and rotor pairing are assembled, air gap is formed between the motor stator punching and the rotor, the air gap is described
The width radially of motor stator punching is GAP, the depth capacity of the arc groove 11 and the ratio (D0+D1- of the GAP
0.5 × DI1)/GAP=0.25~0.5 when, motor stator 10 iron loss decline it is more obvious, while torque output decline it is unknown
Aobvious, when the ratio is greater than 0.5, iron loss decline is unobvious, and torque output then starts to accelerate decline.Further, as (D0
+ D1-0.5 × DI1)/GAP=0.25~0.35, the value of iron loss and torque output is more suitable namely better effect.
The utility model also provides a kind of motor stator, including multiple above-mentioned motor stator punchings.
The utility model also provides a kind of motor, especially a kind of synchronous magnetic resistance motor, including above-mentioned motor stator.To make
Problem is clear, carries out principle elaboration now in conjunction with motor in the prior art, specific as shown in Figure 3, Figure 4, the motor packet
Motor stator 10, rotor 20 are included, the rotor 20 is located in the accommodating chamber of the motor stator 10 formation, the electricity
Air gap is formed between the teeth portion 1 and the rotor 20 of machine stator 10, synchronous magnetic resistance motor on its rotor punching due to not having
Any excitation or permanent magnet, the excitation field of motor stator 10 is when the tooth socket by the rotor 20 acts on, fluctuation
Can be larger, therefore harmonic content is higher, therefore iron loss is high compared to magneto, especially in higher rotation speed.And motor
Iron loss generate the change frequency for having magnetic field for mainly caused by the variation in magnetic field, influencing iron loss size and amplitude two because
Element, and it is square proportional with amplitude.It finds under study for action, synchronous magnetic resistance motor relies on the magnetic line of force (dotted line in such as Fig. 3, Fig. 4
Shown in closed line) bending when the tangential magnetic pull that is formed generate torque output.I.e. when Magnetic field line's spirality, can generate one should
The magnetic line of force tends to the power F (showing in Fig. 3) straightened；Rotor is described with the reduction of Magnetic field line's spirality degree in rotary course
F can reduce；When the teeth portion of the motor stator is aligned with the corresponding position of the rotor, magnetic pull will be reduced to 0.But
Since aligned position is more, the area for participating in magnetic conduction is maximum, flux density highest, this will lead to iron loss and increases that is, generating torque
In the process, when output torque, aligned position is few, and flux density is not high, and iron loss is little instead；When without output torque, aligned position is more,
Flux density is high, and iron loss is big instead.Based on problem above in the prior art, the utility model uses motor stator punching above-mentioned
Corresponding motor stator is formed, to increase equivalent magnetic resistance when aligned position, flux density is reduced, to reduce iron loss.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (9)
1. a kind of motor stator punching, which is characterized in that including teeth portion (1), side of the teeth portion (1) towards rotor side
It is configured on wall arc groove (11), the teeth portion (1) has the first symmetry axis in the motor stator punching radially, described
Arc groove (11) is symmetrical in the circumferential direction of the motor stator punching about first symmetry axis, the circle of the arc groove (11)
Arc wall is minor arc wall.
2. motor stator punching according to claim 1, which is characterized in that further include interconnecting piece (2), the interconnecting piece
(2) it is set to the side that the teeth portion (1) deviates from rotor, the interconnecting piece (2) had in the motor stator punching week
To width W0, the arc groove (11) have groove width W1, W1/W0=1~1.25.
3. motor stator punching according to claim 2, which is characterized in that W1/W0=1~1.15.
4. motor stator punching according to claim 2, which is characterized in that electricity described in the distance of center circle of the arc groove (11)
Projector distance of the center of circle of motor stator punching on the sagittal plane of the motor stator punching is D0, the half of the arc groove (11)
Diameter is D1, and the teeth portion (1) has a pole shoe, and the diameter of the pole shoe is DI1, (D0+D1-0.5 × DI1)/W1=0.05~
0.15。
5. motor stator punching according to claim 4, which is characterized in that (D0+D1-0.5 × DI1)/W1=1.
6. motor stator punching according to claim 4, which is characterized in that when the motor stator punching and rotor
When pairing assembly, air gap is formed between the motor stator punching and the rotor, the air gap is in the motor stator punching
Width radially be GAP, (D0+D1-0.5 × DI1)/GAP=0.25~0.5.
7. motor stator punching according to claim 6, which is characterized in that (D0+D1-0.5 × DI1)/GAP=0.25~
0.35。
8. a kind of motor stator, including multiple motor stator punchings, it is characterised in that the motor stator punching is claim 1
To motor stator punching described in any one of 7.
9. a kind of motor, including motor stator, which is characterized in that the motor stator is motor stator according to any one of claims 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821122072.3U CN208337254U (en) | 2018-07-16 | 2018-07-16 | Motor stator punching sheet, motor stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821122072.3U CN208337254U (en) | 2018-07-16 | 2018-07-16 | Motor stator punching sheet, motor stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208337254U true CN208337254U (en) | 2019-01-04 |
Family
ID=64783989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821122072.3U Active CN208337254U (en) | 2018-07-16 | 2018-07-16 | Motor stator punching sheet, motor stator and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208337254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832737A (en) * | 2018-07-16 | 2018-11-16 | 珠海格力电器股份有限公司 | Motor stator punching sheet, motor stator and motor |
-
2018
- 2018-07-16 CN CN201821122072.3U patent/CN208337254U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832737A (en) * | 2018-07-16 | 2018-11-16 | 珠海格力电器股份有限公司 | Motor stator punching sheet, motor stator and motor |
| CN108832737B (en) * | 2018-07-16 | 2024-04-19 | 珠海格力电器股份有限公司 | Motor stator punching sheet, motor stator and motor |
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