CN110350746A - Permanent magnet motor - Google Patents
Permanent magnet motor Download PDFInfo
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- CN110350746A CN110350746A CN201910713933.8A CN201910713933A CN110350746A CN 110350746 A CN110350746 A CN 110350746A CN 201910713933 A CN201910713933 A CN 201910713933A CN 110350746 A CN110350746 A CN 110350746A
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- 210000000515 tooth Anatomy 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 12
- 230000003313 weakening effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000002401 inhibitory effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- 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
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The application provides a permanent magnet motor. This permanent-magnet machine includes stator module, and stator module includes stator core (1), and stator core (1) includes stator tooth boots (2), and in the plane of the central axis of perpendicular to stator core (1), the bilateral symmetry of stator tooth boots (2) is provided with two sets of auxiliary grooves, and two sets of auxiliary grooves are located the radial inner periphery side of stator tooth boots (2), and every auxiliary groove of group includes first recess (3) and second recess (4) respectively. According to the permanent magnet motor, the torque capacity of the motor can be effectively improved, the torque fluctuation of the motor is improved, and the harmonic content is greatly weakened.
Description
Technical field
This application involves technical field of motors, and in particular to a kind of magneto.
Background technique
Torque ripple is the inherent characteristic of motor, and which increase torque ripples when motor operation, so as to cause motor
Vibration increases with running noises.Torque ripple is caused by two parts, cogging torque when a part is empty load of motor operation, another
How the fluctuation of the electromagnetic torque due to caused by flux density harmonic wave, weaken the torque wave of magneto when part is motor load operation
Dynamic is industry problems.A kind of effective measures are started with from cogging torque, by stator teeth center open up auxiliary tank to
The frequency for increasing cogging torque reduces its amplitude.
But it has been investigated that, it is this open up mode only and be it is effective in a certain rotor type, when the rotor knot of motor
When structure is inconsistent, effect can be reduced or even be run counter to desire.Although on the other hand this mode can reduce cogging torque, by
It is provided with teeth portion center in auxiliary tank, can acutely weaken the fundamental wave in air gap flux density, the output torque of motor is caused to decline to a great extent,
Cause the decline of motor performance.And this measure is unknown for the weakening of the torque ripple due to caused by flux density harmonic wave effect
It is aobvious.
The least common multiple of pole slot number is improved by auxiliary tank in the prior art to weaken cogging torque, plays certain effect
Fruit, but the fundamental wave that the auxiliary tank also can substantially weaken flux density simultaneously causes torque drop, and due to lacking specific aim, to 3,
5, the weakening effect of 7 inferior crucial harmonic waves is bad, therefore causes the torque ripple improvement of motor unobvious.
Summary of the invention
Therefore, the application technical problems to be solved are to provide a kind of magneto, can effectively improve motor torque
Ability improves motor torque fluctuation, substantially reduced harmonic content.
To solve the above-mentioned problems, the application provides a kind of magneto, including stator module, and stator module includes stator
Iron core, stator core include stator tooth boots, in the plane perpendicular to the central axis of stator core, the two sides pair of stator tooth boots
Title is provided with two groups of auxiliary tanks, and two groups of auxiliary tanks are located at the radially inner circumference side of stator tooth boots, and every group of auxiliary tank respectively includes first
Groove and the second groove.
Preferably, it is as1, the center line institute shape of two the second grooves that the center line of two the first grooves, which is formed by angle,
At angle be as2, wherein as1/as2=0.5~0.8.
Preferably, it is as1 that the center line of two the first grooves, which is formed by angle, the two of the circumferential outer edge of stator tooth boots
Angle between the line at the center of a endpoint and stator core is as3, wherein as1/as3=0.3~0.5.
Preferably, the second groove is located at the outer circumferential of the first groove, and half of the stator tooth boots between two the first grooves
Diameter is r1, and the radius of the stator tooth boots between the first groove and the second groove is r2, wherein r1/r2=0.97~1.
Preferably, the second groove is located at the outer circumferential of the first groove, the stator tooth between the first groove and the second groove
The radius of boots is r2, and the radius of the stator tooth boots of the second groove outer circumferential is r3, wherein r2/r3=0.95~1.
Preferably, magneto further includes rotor assembly, and rotor assembly includes rotor core, and peace is provided on rotor core
Tankage is provided with permanent magnet in mounting groove, and the both ends of mounting groove are respectively arranged with air groove, and each air groove is close to pole center line
Side the extension slot of oriented pole center line circumferentially extending is respectively set.
Preferably, company of the radially outer peripheral side of two extension slots close to the endpoint of pole center line and the center of rotor core
It is ar1 that line, which is formed by angle, and it is as2 that the center line of two the second grooves, which is formed by angle, wherein ar1/as2=1.1~
1.4。
Preferably, company of the radially outer peripheral side of two extension slots close to the endpoint of pole center line and the center of rotor core
It is ar1 that line, which is formed by angle, and the line at the center of two endpoints and rotor core of the radially outer peripheral side of permanent magnet is formed
Angle be ar2, wherein ar1/ar2=0.7~1.
Preferably, the circumferential width of the first groove is w1, and the circumferential width of the second groove is w2, wherein w1/w2=0.9~
1.1。
Preferably, the circumferential width of the first groove is w1, and the circumferential width of permanent magnet is wm, wherein w1/wm=0.01~
0.03。
Preferably, stator core includes 9 stator teeths, and rotor core includes 6 groups of mounting grooves, and magneto is 9 slot, 6 pole
Motor.
Magneto provided by the present application, including stator module, stator module include stator core, and stator core includes fixed
Sub- tooth boots, in the plane perpendicular to the central axis of stator core, the two sides of stator tooth boots are symmetrically arranged with two groups of auxiliary tanks,
Two groups of auxiliary tanks are located at the radially inner circumference side of stator tooth boots, and every group of auxiliary tank respectively includes the first groove and the second groove.This Shen
Magneto please is symmetrically arranged each 2 auxiliary tanks in the two sides of stator teeth, does not influence fundamental voltage amplitude, improves tooth socket and turns
The frequency of square pulsation, reduces its amplitude, guarantees the cogging torque for weakening motor under the premise of motor electromagnetic torque, meanwhile, auxiliary
The quantity of slot is 2, can preferably weaken the flux densities harmonic waves such as 3,5,7, and cooperation teeth portion two sides are arranged biggish air gap, further drop
Low torque fluctuation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the magneto of the embodiment of the present application；
Fig. 2 is the first size structure chart of the magneto of the embodiment of the present application；
Fig. 3 is the second dimensional structure figure of the magneto of the embodiment of the present application；
Fig. 4 is rotor field Harmonic Decomposition figure；
Fig. 5 a is the interaction diagram of auxiliary tank in the prior art and harmonic wave；
Fig. 5 b is the auxiliary tank of the magneto of the embodiment of the present application and the interaction diagram of harmonic wave；
Fig. 6 a is the first magnetic structure figure of the auxiliary tank of the magneto of the embodiment of the present application；
Fig. 6 b is second of magnetic structure figure of the auxiliary tank of the magneto of the embodiment of the present application；
Fig. 7 is influence curve figure of the ar1/as2 to harmonic content of the magneto of the embodiment of the present application；
Fig. 8 is influence curve figure of the as1/as2 to harmonic content of the magneto of the embodiment of the present application；
Fig. 9 is the cogging torque curve comparison figure of the magneto of the embodiment of the present application and the magneto of the prior art；
Figure 10 is the electromagnetic torque curve comparison diagram of the magneto of the embodiment of the present application and the magneto of the prior art.
Appended drawing reference indicates are as follows:
1, stator core；2, stator tooth boots；3, the first groove；4, the second groove；5, rotor core；6, mounting groove；7, forever
Magnet；8, air groove；9, extension slot.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to Figure 10, according to an embodiment of the present application, magneto includes stator module, described fixed
Sub-component includes stator core 1, and the stator core 1 includes stator tooth boots 2, in the central axis perpendicular to the stator core 1
In the plane of line, the two sides of the stator tooth boots 2 are symmetrically arranged with two groups of auxiliary tanks, and two groups of auxiliary tanks are located at the stator
The radially inner circumference side of tooth boots 2, auxiliary tank described in every group respectively include the first groove 3 and the second groove 4.
The magneto of the application is symmetrically arranged each 2 auxiliary tanks in the two sides of stator teeth, does not influence fundamental wave width
Value can be improved the frequency of cogging torque pulsation, reduce its amplitude, guarantee the tooth for weakening motor under the premise of motor electromagnetic torque
Slot torque, meanwhile, the quantity of auxiliary tank is 2, can preferably weaken the flux densities harmonic waves such as 3,5,7, the setting of cooperation teeth portion two sides compared with
Big air gap, further decreases torque ripple.
Several stator teeths are circumferentially uniformly distributed on stator core 1, stator teeth is in the part close to rotor outer periphery edge
It axially extends to form wider tooth boot portion, tooth boot portion two sides are symmetrically respectively provided with 2 groups of auxiliary tanks, including the first groove 3 and
Two grooves 4, the number of teeth of stator are z, then the number of auxiliary tank is 4z, and the frequency of cogging torque is z and rotor pole when no auxiliary tank
The least common multiple of number 6, and after being provided with auxiliary tank, the frequency of cogging torque is the least common multiple of (4z+z) and rotor number of poles 6
Number, ripple frequency significantly improve, and imply the reduction of cogging torque amplitude, as shown in Figure 2,3.
In addition, rotor field Harmonic Decomposition is as shown in figure 4, comprising odd numbers subwaves such as 1 (fundamental wave), 3,5,7, in the prior art
Slot in the middle part of stator tooth, auxiliary tank will increase the air gap at this, to weaken rotor field, although which can weaken it is humorous
Wave amplitude, but can also weaken the amplitude of fundamental wave simultaneously, as shown in Figure 5 a, arrow indicates the weakening effect to amplitude, fundamental wave meeting
Substantially weakened, is declined to a great extent so as to cause electromagnetic torque.In the application, the first groove 3 and the second groove 4 are arranged on teeth portion
Two sides, tooth middle part is constant, therefore smaller on the influence of the amplitude of fundamental wave, and as shown in the arrow in Fig. 5 b, auxiliary tank can substantially weaken
The amplitude of harmonic wave.On the other hand, the number of auxiliary tank is 2 in the application, can further weaken 5 times and 7 magnetic harmonic waves are (in Fig. 5 b
It for 3 subharmonic, is not shown for 5,7 times).
After the above scheme using the application, relative to existing for teeth portion opens up the technology of auxiliary tank, this Shen
The electromagnetic torque of magneto please promotes 8%, and cogging torque reduces 50%, and torque ripple reduces by 50%, and motor performance is substantially
It is promoted.
It is as1, the center line of two second grooves 4 that the center line of two first grooves 3, which is formed by angle,
Being formed by angle is as2, wherein as1/as2=0.5~0.8.As1 characterizes the circumferential position of the first groove 3, influences to assist
Slot characterizes the circumferential position of the second groove 4, influences auxiliary tank to 5,7 etc. compared with high order to the inhibiting effect of 3,5 subharmonic, as2
The inhibiting effect of harmonic wave, research shows that can preferably inhibit the crucial harmonic waves such as 5,7 when as1/as2=0.5~0.8, to tooth socket
The weakening effect of torque is preferable, as shown in Figure 8.
It is as1 that the center line of two first grooves 3, which is formed by angle, the circumferential outer edge of the stator tooth boots 2
Two endpoints and the stator core 1 center line between angle be as3, wherein as1/as3=0.3~0.5.
As3 characterizes the circumferential width of stator tooth boots 1, influences flux density wave under the magnetic line of force quantity for being able to enter stator teeth and the tooth
Width, studies have shown that can guarantee the amplitude of fundamental wave by weakening lesser while allowing the first groove when as1/as3=0.3~0.5
3 substantially weaken 3,5 subharmonic.
Second groove 4 is located at the outer circumferential of first groove 3, described between two first grooves 3
The radius of stator tooth boots 2 is r1, and the radius of the stator tooth boots 2 between first groove 3 and second groove 4 is
R2, wherein r1/r2=0.97~1.
Second groove 4 is located at the outer circumferential of first groove 3, first groove 3 and second groove 4
Between the radiuses of the stator tooth boots 2 be r2, the radiuses of the stator tooth boots 2 of 4 outer circumferential of the second groove is r3,
Wherein r2/r3=0.95~1.
R1, r2, r3 are smaller, then air gap is smaller, and magnetic resistance is smaller, and rotor field fundamental wave, harmonic amplitude are bigger, and electromagnetic torque is just
Bigger, torque ripple caused by harmonic wave is also bigger, and r1/r2=0.97~1 can make the air gap in the middle part of tooth small, the air gap of two sides
Greatly, further weaken higher hamonic wave on the basis of the first groove 3 and the second groove 4.Due to tooth boots shoulder radial thickness compared with
It is thin, it is extremely easily saturated, therefore r2/r3=0.95~1 is allow to weaken the magnetic saturation phenomenon of tooth boots shoulder, reduces space harmonics
Distortion, i.e., reduction armature-reaction with the motor feels hot.
The magneto further includes rotor assembly, and the rotor assembly includes rotor core 5, on the rotor core 5
It is provided with mounting groove 6, permanent magnet 7 is provided in the mounting groove 6, the both ends of the mounting groove 6 are respectively arranged with air groove 8,
The extension slot 9 of the oriented pole center line circumferentially extending is respectively set close to the side of pole center line for each air groove 8.
Rotor core is overrided to form by soft magnetic materials thin slice.Array mounting groove 6, peace in mounting groove 6 are provided on rotor core
Equipped with permanent magnet 7.Mounting groove 6 extends to form extension slot 9 to pole center line close to the part of rotor outer periphery edge.Extension slot 9 is adjusted
Whole width of the permanent magnet towards air gap, width can not form greatly biggish air gap flux density, and can not effectively guide the magnetic line of force
Play the effect of stator teeth auxiliary tank into stator, width is small, which to make the more magnetic line of force concentrate in together, causes magnetic full
With, cause rotor iron loss to increase, calorific value increase, and reduce electromagnetic torque.As shown in figures 6 a and 6b, one of to implement
Rotor in example causes the magnetic line of force not by stator teeth auxiliary tank using the scheme of the prior art without extension slot 9
Modulation, auxiliary tank can not play the effect for reducing cogging torque, inhibiting harmonic wave, and by being rationally arranged two in the technology of the present invention
The angle of a extension slot 9 keeps the auxiliary tank of stator teeth best to the inhibiting effect of harmonic wave.
The radially outer peripheral side of two extension slots 9 is close to the endpoint of pole center line and the center of the rotor core 5
Line to be formed by angle be ar1, it is as2 that the center line of two second grooves 4, which is formed by angle, wherein ar1/
As2=1.1~1.4.Ar1 characterizes the width in rotor flux face, and it is wide that as2 characterizes the magnetic flux face that can be acted on by auxiliary tank
Degree, studies have shown that when ar1/as2=1.1~1.4 can guarantee to have magnetic line of force lines more as far as possible can be by the first groove 3 and the
The modulation of two grooves 4, it is preferable to the inhibiting effect of harmonic wave, as shown in Figure 7.
The radially outer peripheral side of two extension slots 9 is close to the endpoint of pole center line and the center of the rotor core 5
Line to be formed by angle be ar1, in two endpoints and the rotor core 5 of the radially outer peripheral side of the permanent magnet 7
It is ar2 that the line of the heart, which is formed by angle, wherein ar1/ar2=0.7~1.Extension slot 9 has adjusted permanent magnet 7 towards air gap
Width, width can not form greatly biggish air gap flux density, and width is small, which to make the more magnetic line of force concentrate in together, leads to magnetic saturation,
Rotor iron loss is caused to increase, calorific value increases, and reduces electromagnetic torque.Because permanent magnet 7 is magnetomotive force sources, studies have shown that
Ar1/ar2=0.7~1 can guarantee that the magnetic line of force of pole shoe is relatively uniform.
The circumferential width of first groove 3 is w1, and the circumferential width of second groove 4 is w2, wherein w1/w2=
0.9~1.1.
The circumferential width of first groove 3 is w1, and the circumferential width of the permanent magnet 7 is wm, wherein w1/wm=0.01
~0.03.
The position of 4 the two of the first groove 3 and the second groove mutually restrains, and w1 is big, and w2 will certainly reduce, and vice versa,
Studies have shown that the ratio of the two meet it is best to the inhibiting effect of harmonic wave when w1/w2=0.9~1.1.W1, w2 are bigger to harmonic wave
Weakening effect it is better, also more severe to the reduction of electromagnetic torque, the utilization rate of permanent magnet is lower.In addition, when the first groove 3 with
When the width ratio of permanent magnet 7 meets w1/wm=0.01~0.03, it can guarantee (to guarantee under the premise of permanent magnet utilization rate
The amplitude of fundamental wave), amplitude peak reduces space flux density harmonic wave.
The stator core 1 includes 9 stator teeths, and the rotor core 5 includes 6 groups of mounting grooves 6, the magneto
For 9 slot, 6 pole motor.
Research is indicated, when above-mentioned structure stator assembly and rotor assembly is applied to 9 slot, 6 pole motor, effect is especially prominent
Out.
Using the magneto of application scheme, the comparison of cogging torque and the prior art is as shown in Figure 9, it is evident that
In technical scheme, the ripple frequency of cogging torque is higher, and amplitude is smaller.
It is as shown in Figure 10 using the torque curve of the magneto of application scheme and the comparison of the prior art, it is evident that
Technical scheme has bigger average torque and smaller torque ripple.
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 application, not to limit the application, it is all in spirit herein and
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within principle.Above only
It is the preferred embodiment of the application, it is noted that for those skilled in the art, do not departing from this Shen
Several improvements and modifications please can also be made, these improvements and modifications also should be regarded as the guarantor of the application under the premise of technical principle
Protect range.
Claims (11)
1. a kind of magneto, which is characterized in that including stator module, the stator module includes stator core (1), described fixed
Sub- iron core (1) includes stator tooth boots (2), in the plane of the central axis perpendicular to the stator core (1), the stator tooth
The two sides of boots (2) are symmetrically arranged with two groups of auxiliary tanks, and two groups of auxiliary tanks are located at the radially inner circumference of the stator tooth boots (2)
Side, auxiliary tank described in every group respectively include the first groove (3) and the second groove (4).
2. magneto according to claim 1, which is characterized in that the center line institute shape of two first grooves (3)
At angle be as1, it is as2 that the center line of two second grooves (4), which is formed by angle, wherein as1/as2=0.5~
0.8。
3. magneto according to claim 1 or 2, which is characterized in that the center line institute of two first grooves (3)
The angle of formation is as1, two endpoints of the circumferential outer edge of the stator tooth boots (2) and the center of the stator core (1)
Line between angle be as3, wherein as1/as3=0.3~0.5.
4. magneto according to claim 1, which is characterized in that second groove (4) is located at first groove
(3) outer circumferential, the radius of the stator tooth boots (2) between two first grooves (3) are r1, first groove
(3) radius of the stator tooth boots (2) between second groove (4) is r2, wherein r1/r2=0.97~1.
5. magneto according to claim 1 or 4, which is characterized in that it is recessed that second groove (4) is located at described first
The radius of the outer circumferential of slot (3), the stator tooth boots (2) between first groove (3) and second groove (4) is
R2, the radius of the stator tooth boots (2) of the second groove (4) outer circumferential are r3, wherein r2/r3=0.95~1.
6. magneto according to claim 1, which is characterized in that the magneto further includes rotor assembly, described
Rotor assembly includes rotor core (5), is provided with mounting groove (6) on the rotor core (5), setting in the mounting groove (6)
Have permanent magnet (7), the both ends of the mounting groove (6) are respectively arranged with air groove (8), and each air groove (8) is in magnetic pole
The extension slot (9) of the oriented pole center line circumferentially extending is respectively set in the side of heart line.
7. magneto according to claim 6, which is characterized in that the radially outer peripheral side of two extension slots (9) is leaned on
It is ar1 that the line at the center of the endpoint and rotor core (5) of nearly pole center line, which is formed by angle, two described second
It is as2 that the center line of groove (4), which is formed by angle, wherein ar1/as2=1.1~1.4.
8. magneto according to claim 6, which is characterized in that the radially outer peripheral side of two extension slots (9) is leaned on
It is ar1 that the line at the center of the endpoint and rotor core (5) of nearly pole center line, which is formed by angle, the permanent magnet
(7) it is ar2 that the line at the center of the two endpoints and rotor core (5) of radially outer peripheral side, which is formed by angle, wherein
Ar1/ar2=0.7~1.
9. magneto according to claim 6, which is characterized in that the circumferential width of first groove (3) is w1, institute
The circumferential width for stating the second groove (4) is w2, wherein w1/w2=0.9~1.1.
10. magneto according to claim 6 or 9, which is characterized in that the circumferential width of first groove (3) is
W1, the circumferential width of the permanent magnet (7) are wm, wherein w1/wm=0.01~0.03.
11. magneto according to claim 6, which is characterized in that the stator core (1) includes 9 stator teeths,
The rotor core (5) includes 6 groups of mounting grooves (6), and the magneto is 9 slot, 6 pole motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713933.8A CN110350746B (en) | 2019-08-02 | 2019-08-02 | Permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713933.8A CN110350746B (en) | 2019-08-02 | 2019-08-02 | Permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN110350746A true CN110350746A (en) | 2019-10-18 |
| CN110350746B CN110350746B (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910713933.8A Active CN110350746B (en) | 2019-08-02 | 2019-08-02 | Permanent magnet motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
| CN112165192A (en) * | 2020-09-30 | 2021-01-01 | 安徽美芝精密制造有限公司 | Motor structure and compressor |
| CN112583148A (en) * | 2020-12-22 | 2021-03-30 | 哈尔滨理工大学 | Weaken stator structure of in-wheel motor tooth's socket torque |
| CN113595276A (en) * | 2021-07-28 | 2021-11-02 | 华中科技大学 | Permanent magnet motor tooth socket torque reduction method and device |
| CN114123559A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Stator assembly and motor |
| US11496015B2 (en) * | 2019-06-03 | 2022-11-08 | GM Global Technology Operations LLC | Electric machine with stator tooth tip profile for reducing winding-based power losses |
| FR3128073A1 (en) | 2021-10-12 | 2023-04-14 | Nidec Psa Emotors | Stator of rotating electric machine |
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| CN1194735A (en) * | 1996-05-24 | 1998-09-30 | 松下电器产业株式会社 | Motor |
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| US11496015B2 (en) * | 2019-06-03 | 2022-11-08 | GM Global Technology Operations LLC | Electric machine with stator tooth tip profile for reducing winding-based power losses |
| CN111293799A (en) * | 2020-02-27 | 2020-06-16 | 南京奥特佳新能源科技有限公司 | Permanent magnet motor with optimized back electromotive force sine waveform and stator thereof |
| CN112165192A (en) * | 2020-09-30 | 2021-01-01 | 安徽美芝精密制造有限公司 | Motor structure and compressor |
| CN112583148A (en) * | 2020-12-22 | 2021-03-30 | 哈尔滨理工大学 | Weaken stator structure of in-wheel motor tooth's socket torque |
| CN113595276A (en) * | 2021-07-28 | 2021-11-02 | 华中科技大学 | Permanent magnet motor tooth socket torque reduction method and device |
| CN113595276B (en) * | 2021-07-28 | 2022-08-02 | 华中科技大学 | Permanent magnet motor tooth socket torque reduction method and device |
| FR3128073A1 (en) | 2021-10-12 | 2023-04-14 | Nidec Psa Emotors | Stator of rotating electric machine |
| CN114123559A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Stator assembly and motor |
| CN114123559B (en) * | 2021-11-11 | 2023-04-07 | 珠海格力电器股份有限公司 | Stator assembly and motor |
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