CN108900055A - A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement - Google Patents
A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement Download PDFInfo
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- CN108900055A CN108900055A CN201811036928.XA CN201811036928A CN108900055A CN 108900055 A CN108900055 A CN 108900055A CN 201811036928 A CN201811036928 A CN 201811036928A CN 108900055 A CN108900055 A CN 108900055A
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- 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
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- 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
-
- 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
- H02K1/17—Stator cores with permanent magnets
-
- 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
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a kind of carnassial tooth stator/rotor permanent magnet vernier motors of uneven arrangement, it is related to magneto direct driving motor technical field.It includes stator and rotor part, stator includes stator yoke, stator canine tooth, stator carnassial tooth, winding and stator permanent magnet, rotor includes rotor yoke, rotor tooth and rotor permanent magnet, the stator canine tooth being connect with stator yoke spatially uneven arrangement, stator canine tooth splits into stator carnassial tooth in end, stator permanent magnet is placed in the slot formed by stator carnassial tooth, and winding is placed in the slot formed by stator canine tooth, rotor permanent magnet be placed on by rotor tooth form at slot in.The constraint of the present invention decoupling magneto winding number of pole-pairs and rotor number of pole-pairs, so that the motor is suitble to Ultra-Low Speed operation, weaken slot ripples torque, so that the motor operation is steady, air gap flux density is improved, so that the motor increases torque density, the occasions such as lathe turntable, joint of robot that this motor is suitable for directly driving, it may replace speed reducer, market application prospect is wide.
Description
Technical field
The present invention relates to magneto direct driving motor technical fields, and in particular to a kind of carnassial tooth of uneven arrangement turns surely
Sub- permanent magnetism vernier motor.
Background technique
With the raising of China's manufacturing industry level, straight drive system is gradually favored in industry manufacture.Conventional ADS driving side
In case, in order to obtain the driving output of low speed high torque, motor polygamy closes speed reducer and uses, and speed reducer belongs to precision machinery portion
The problems such as part, difficulty of processing is big, at high cost, and that there are transmission efficiencies is low, transmission accuracy difference and obvious vibration noise.In order to
Solve the problems, such as that speed reducer is brought, direct driving motor obtains the extensive concern of industry in recent years, wherein using fractional-slot concentratred winding
The permanent magnet direct driving motor of scheme in semiconductor machining, is cut by laser, and obtains Preliminary Applications in detection device.For fractional-slot
For concentratred winding motor, number of pole-pairs and slot number have stringent the constraint relationship, it is desirable that number of pole-pairs is limited close to the 1/2 of slot number
Slot number limit continuing growing for number of pole-pairs, make it unsuitable for Ultra-Low Speed operation；In addition only having on rotor has magnet, limits
Air gap flux density further increases, and makes it unsuitable for using to the more demanding occasion of torque density, as robot, lathe turn
Platform etc..
It is a kind of to utilize magnetic field modulation in order to further increase the torque density of direct driving motor and reduce the applicable revolving speed of motor
The vernier motor of principle work starts to obtain the attention of some scholars.Vernier motor is worked using the harmonic wave of magnetic field modulation,
The constraint relationship of rotor number of pole-pairs and slot number has been decoupled, so that can be designed that more rotor numbers of pole-pairs under limited slot number,
It is suitable for Ultra-Low Speed operation.The technical characteristic that the present invention utilizes mainly has：Non-homogeneous tooth, carnassial tooth, stator/rotor permanent magnet body are and current
Having invention has notable difference.Being closer to of retrieving of being now the theme with vernier motor patent display of the invention is as follows,
The difference for introducing the present invention and existing patent, to illustrate originality and novelty of the invention.
A kind of permanent magnet direct-driven vernier motor disclosed in Chinese invention patent application number 201210013796.5, using uniform
Tooth and non-carnassial tooth structure have significant difference with non-homogeneous tooth proposed by the present invention and carnassial tooth.
A kind of disk type permanent-magnet cursor motor and China disclosed in Chinese invention patent application number 201210014193.7 are practical
A kind of disk-type low-speed high-torque permanent-magnet cursor motor disclosed in new patent application number 201220020263.5 belongs to disc type electricity
Machine scope, it is obvious with motor mechanism difference proposed by the present invention.
A kind of stator permanent magnetic type vernier reducing detent force disclosed in Chinese invention patent application number 201310445593.8
Concentrated magnetic disclosed in electric machine structure, Chinese invention patent application number 201610960409.7 replaces pole vernier magneto and its answers
With belonging to linear motor field, have notable difference with rotary motor configuration proposed by the present invention.
Fault tolerance type permanent magnetic vernier motor disclosed in Chinese invention patent application number 201210192651.6, patent of invention Shen
It please a kind of magneticfocusing stator permanent magnetic type vernier motor, application number of invention patent disclosed in numbers 201210539414.2
201310444664.2 a kind of stator permanent magnetic type vernier motor of disclosed circumference uniform distribution module, application number of invention patent
201410340588.5 disclosed mixing magnetic material fault tolerant permanent magnet vernier motor, application number of invention patent 201610547957.7 are public
The permanent magnetism vernier motor and application number of invention patent opened are one kind disclosed in 201610800718.8 across two tooth concentratred winding verniers
Magneto, use is unilateral permanent magnet (permanent magnetism is on stator or rotor) and uniform toothing, and proposed by the present invention
Stator/rotor permanent magnet body and non-homogeneous tooth feature difference are obvious.
Axial-magnetic-fielddouble-stator double-stator vernier motor disclosed in Chinese invention patent application number 201310069614.0, belongs to axial direction
Magnetic field electric motor scope, and double-stator structure is used, it is different from motor magnetic circuit proposed by the present invention, and structure has notable difference.
A kind of stator/rotor permanent magnet type vernier motor disclosed in Chinese invention patent application number 201310615118.0, use
It is also carnassial tooth structure, but the uniform tooth feature that its canine tooth uses, and points out that the invention has carnassial tooth number in detail in the claims
1 more than the slot number formed than carnassial tooth, rotor slot is trapezoidal two features, and the present invention does not have the two features, splits gear ratio and split
Slot number it is small also can, rotor slot be non-dovetail groove also may be used.
Based on the above situation, the carnassial tooth stator/rotor permanent magnet vernier motor for designing a kind of uneven arrangement is particularly necessary.
Summary of the invention
In view of the shortcomings of the prior art, object of the present invention is to be that the carnassial tooth for providing a kind of uneven arrangement turns surely
Sub- permanent magnetism vernier motor, it is reasonable in design, the constraint of magneto winding number of pole-pairs and rotor number of pole-pairs is decoupled, so that should
Motor is suitble to Ultra-Low Speed operation, weakens slot ripples torque, so that the motor operation is steady, improves air gap flux density, so that should
Motor increases torque density, use easy to spread.
To achieve the goals above, the present invention is to realize by the following technical solutions：A kind of uneven arrangement is split
Tooth stator/rotor permanent magnet vernier motor, including stator and rotor part, the stator include stator yoke, stator canine tooth, stator carnassial tooth,
Winding and stator permanent magnet, rotor include rotor yoke, rotor tooth and rotor permanent magnet, and the stator canine tooth connecting with stator yoke is in sky
Between upper uneven arrangement, and stator canine tooth splits into stator carnassial tooth in end, and stator permanent magnet is placed on to be formed by stator carnassial tooth
Slot in, winding is placed in the slot formed by stator canine tooth, and rotor tooth is connected on rotor yoke, rotor permanent magnet be placed on by
Rotor tooth form at rotor slot in.
Preferably, the stator canine tooth is circumferentially in uneven arrangement, the mechanical angle difference of adjacent big between cog
It is not alternateθ 1Withθ 2, whereinθ 1It is not equal toθ 2, which weakens cogging torque, it is suppressed that and torque harmonic wave, so that should
Motor can export stable torque.
Preferably, each stator canine tooth splits into m stator carnassial tooth in end, wherein m >=2 define stator canine tooth
Number is NS, the sum of stator carnassial tooth is NL, then have NL=m×NS；Definition is N by the carnassial tooth slot number that stator carnassial tooth is formedLS, stator
The carnassial tooth sum of carnassial tooth has N 1 or fewer than carnassial tooth slot 1 more than carnassial tooth slotLS=NL±1。
Preferably, the winding is placed in the slot formed by stator canine tooth, stator permanent magnet is placed on by stator
Carnassial tooth formed slot in, rotor permanent magnet be placed on by rotor tooth form at rotor slot in, the motor utilize magnetic field modulation principle
It works, wherein definition winding number of pole-pairs is PW, the big number N of teeth of statorS, rotor permanent magnet number of pole-pairs NRFormula P should be metW=
|mNS -NR|, in carnassial tooth stator/rotor permanent magnet motor proposed by the present invention, NRIt can take close to mNS, wherein m >=2, therefore same
The number N of teeth of sampleSUnder, motor proposed by the present invention can possess more rotor numbers of pole-pairs, and it is suitble to Ultra-Low Speed to run, and due to
Carnassial tooth number m can realize decoupling not by the constraint of conventional motors with flexible setting, rotor number of pole-pairs and the number of teeth.
Preferably, the shape of the stator carnassial tooth includes rectangle, trapezoidal, semicircle and sinusoidal.
Preferably, the stator yoke, stator canine tooth, stator carnassial tooth, rotor yoke, rotor tooth are all made of permeability magnetic material system
At including silicon steel sheet, pure iron, electrical sheet, permalloy.
Preferably, the shape of the stator permanent magnet, rotor permanent magnet include rectangle, it is trapezoidal, semicircle, sinusoidal
Shape and Halbach shape, stator permanent magnet, rotor permanent magnet magnetizing direction it is unified radially inward or radially,
The permanent magnet material of use includes neodymium iron boron, ferrite, SmCo.
Beneficial effects of the present invention：(1) non-homogeneous toothing is used, it is suppressed that cogging torque fluctuation, so that it is defeated to change motor
Torque is steady out, is suitable for directly driving operation.
(2) carnassial tooth structure is used, the constraint of number of stator teeth and rotor number of pole-pairs has been decoupled, so that can under the limited number of teeth
To design the more motors of number of pole-pairs, it is suitable for the ultralow revolving speed applications such as lathe turntable, joint of robot.
(3) stator/rotor permanent magnet body structure is used, air-gap field intensity is enhanced, so that the output torque of motor is higher than routine
Motor is suitable for the use of the occasions such as the joint of robot more demanding to torque density.
(4) by the way that three non-homogeneous tooth, carnassial tooth and stator/rotor permanent magnet body features combine, it is difficult that other motors are realized
With the high torque density being provided simultaneously with, low torque fluctuation and suitable Ultra-Low Speed run three advantages, in the big torque field of Ultra-Low Speed
Conjunction has boundless prospect.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the non-homogeneous toothing schematic diagram that the present invention uses；
Fig. 3 is the carnassial tooth structural schematic diagram that the present invention uses；
Fig. 4 is rectangle, trapezoidal, the semicircle and sinusoidal carnassial tooth structural schematic diagram that the present invention uses；
Fig. 5 is rectangle, trapezoidal, semicircle, sinusoidal and the Halbach shape magnet structure schematic diagram that the present invention uses；
Fig. 6 is that the permanent magnet that uses of the present invention magnetizes schematic diagram；
Fig. 7 is cogging torque waveform diagram of the invention；
Fig. 8 is counter potential waveform figure of the invention；
Fig. 9 is counter potential waveform Fourier analysis figure of the invention；
Figure 10 is electromagnetic torque waveform diagram of the invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig.1-10, present embodiment uses following technical scheme：A kind of carnassial tooth rotor of uneven arrangement
Permanent magnetism vernier motor, including stator and rotor part, the stator include stator yoke 1, stator canine tooth 2, stator carnassial tooth 3, winding 4
With stator permanent magnet 5, rotor includes rotor yoke 6, rotor tooth 7 and rotor permanent magnet 8, and the stator canine tooth 2 connecting with stator yoke 1 exists
Spatially uneven arrangement, and stator canine tooth 2 splits into stator carnassial tooth 3 in end, stator permanent magnet 5 is placed on by stator carnassial tooth
In 3 slots formed, winding 4 is placed in the slot formed by stator canine tooth 2, and rotor tooth 7 is connected on rotor yoke 6, rotor permanent magnet
Body 8 is placed in the rotor slot formed by rotor tooth 7.
In order to inhibit cogging torque to fluctuate, keep torque output more stable, present embodiment is using uneven arrangement
Stator canine tooth, Fig. 2 give the schematic diagram of this canine tooth.Flute profile in figure is used only to illustrate that the non-homogeneous tooth of this motor is special
Sign, does not constitute the constraint of this motor；Stator canine tooth 2 is circumferentially in uneven arrangement, and the mechanical angle of adjacent big between cog is poor
It is respectively alternateθ 1Withθ 2, whereinθ 1It is not equal toθ 2, which weakens cogging torque, it is suppressed that and torque harmonic wave, so that
The motor can export stable torque.
It is worth noting that, in order to decouple the relationship between slot number and number of pole-pairs, present embodiment uses carnassial tooth knot
Structure, as shown in Fig. 3.Each stator canine tooth 2 splits into m stator carnassial tooth 3 in end, wherein m >=2 define stator canine tooth 2
Number be NS, the sum of stator carnassial tooth 3 is NL, then have NL=m×NS；Definition is N by the carnassial tooth slot number that stator carnassial tooth 3 is formedLS,
The carnassial tooth sum of stator carnassial tooth 3 has N 1 or fewer than carnassial tooth slot 1 more than carnassial tooth slotLS=NL± 1, the carnassial tooth shape in figure is
For illustrating the carnassial tooth feature of this motor, and should not carnassial tooth shape constraint.
It is worth noting that, the winding 4 is placed in the slot formed by stator canine tooth 2, stator permanent magnet 5 is placed on
In the slot formed by stator carnassial tooth 3, rotor permanent magnet 8 is placed in the rotor slot formed by rotor tooth 7, which utilizes magnetic field
Modulation principle works, wherein definition winding number of pole-pairs is PW, the big number N of teeth of statorS, rotor permanent magnet number of pole-pairs NRYing Man
Sufficient formula PW=|mNS -NR|.In conventional fractional-slot concentratred winding motor, in order to obtain biggish torque, NRIt should be as far as possible
Close to NS/ 2, and in carnassial tooth stator/rotor permanent magnet motor proposed by the present invention, NRIt can take close to mNS, wherein m >=2, therefore
Same number N of teethSUnder, motor proposed by the present invention can possess more rotor numbers of pole-pairs, and it is suitble to Ultra-Low Speed to run, and by
In carnassial tooth number m decoupling can be realized not by the constraint of conventional motors with flexible setting, rotor number of pole-pairs and the number of teeth.
The shape of the stator carnassial tooth 3 includes rectangle, trapezoidal, semicircle and sinusoidal, such as Fig. 4, and carnassial tooth is only used
Illustrate carnassial tooth shape, does not limit the number of carnassial tooth.
The stator yoke 1, stator canine tooth 2, stator carnassial tooth 3, rotor yoke 6, rotor tooth 7 are all made of permeability magnetic material and are made,
It include silicon steel sheet, pure iron, electrical sheet, permalloy.
In addition, the shape of the stator permanent magnet 5, rotor permanent magnet 8 includes rectangle, trapezoidal, semicircle, sinusoidal
It is used only to illustrate the shape of permanent magnet with Halbach shape, such as figure in Fig. 5, does not limit shape each section composition line
The dimension scale of item.Stator permanent magnet 5, rotor permanent magnet 8 magnetizing direction it is unified radially inward or radially
(Fig. 6), structure shown in figure are only used to surface magnetizing direction, do not constitute the restriction to electric machine structure of the present invention, and the present apparatus is adopted
Permanent magnet material includes neodymium iron boron, ferrite, SmCo.
Present embodiment illustrates embodiment with motor shown in FIG. 1, wherein big number N of teethS=24, carnassial tooth numberm=4,θ 1
=13.5 °,θ 2=16.5 °, using rectangle carnassial tooth, rectangular permanent magnet, DW310 silicon steel sheet and N45 Nd-Fe-B permanent magnet.Two stators
Angle between canine tooth 2θ 1It is not equal toθ 2, cogging torque fluctuation is reduced, cogging torque waveform is as shown in Fig. 7, the peak Qi Feng
It is worth about 0.5Nm, which is 102Nm, and cogging torque fluctuation accounts for the 5 ‰ of nominal torque.The present embodiment uses non-
Uniform tooth feature effectively improves cogging torque fluctuation.
The big number N of teeth of the motor stator of the structureSIt is 24, carnassial tooth number m=4, carnassial tooth sum NL =m×NS=96, rotor permanent magnet
Number of pole-pairs NR=86, according to magnetic field modulation principle, winding number of pole-pairs PW=| NL -NR|=10.For NS=24 conventional fractional slot collection
Middle winding electric machine, to be advisable close to 13, and for the motor that the present embodiment proposes, rotor number of pole-pairs can achieve rotor number of pole-pairs
86, the relationship of the big number of teeth and rotor number of pole-pairs has been decoupled, the more motors of number of pole-pairs has been can be designed that, is suitable for Ultra-Low Speed occasion
It uses.Fig. 8 gives the unloaded back-emf of this motor, and Fig. 9 gives the Fourier analysis of back-emf, the results showed that the motor
Back-emf three-phase symmetrical and sine degree is high, harmonic wave total amount THD is about 3%, and good sine wave back-emf demonstrates the motor
The feasibility of principle and the superiority of electromagnetic signature；Figure 10 gives the torque profile in the case of nominal load, in outer diameter
145mm, under the size of axial length 50mm, torque reaches 102Nm, straight much higher than the fractional-slot concentratred winding largely used at present
Motor is driven, electromagnetic torque fluctuation is about 5 ‰, and output torque is very steady.
In conclusion non-homogeneous tooth, carnassial tooth and stator/rotor permanent magnet body structure, cogging torque that the present embodiment uses can be low
To the 5 ‰ of nominal torque, rated speed can reach 123kNm/m down to 60rpm, torque density3, electromagnetic torque fluctuation can drop
Down to 5 ‰.
For the motor that present embodiment proposes because its torque ripple is small, torque density is big, and normal speed is low, is suitable for low
Fast big torque applications, have decoupled the constraint of magneto winding number of pole-pairs and rotor number of pole-pairs, so that the motor is suitble to surpass
Low speed operation, weakens slot ripples torque, so that the motor operation is steady, improves air gap flux density, so that the motor increases
Torque density can replace speed reducer suitable for applications such as the lathe turntable, the joint of robot that directly drive, have wide
Market application prospect.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement, which is characterized in that including stator and rotor part, institute
Stating stator includes stator yoke (1), stator canine tooth (2), stator carnassial tooth (3), winding (4) and stator permanent magnet (5), and rotor includes turning
Sub- yoke (6), rotor tooth (7) and rotor permanent magnet (8), the stator canine tooth (2) being connect with stator yoke (1) spatially non-homogeneous row
Column, and stator canine tooth (2) is split into stator carnassial tooth (3) in end, stator permanent magnet (5) is placed on to be formed by stator carnassial tooth (3)
Slot in, winding (4) is placed in the slot formed by stator canine tooth (2), and rotor tooth (7) is connected on rotor yoke (6), and rotor is forever
Magnet (8) is placed in the rotor slot formed by rotor tooth (7).
2. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The stator canine tooth (2) stated is in circumferentially uneven arrangement, and the mechanical angle difference of adjacent big between cog is respectively alternate θ1And θ2,
Wherein θ1Not equal to θ2。
3. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The stator canine tooth (2) stated splits into m stator carnassial tooth (3) in end, wherein m >=2, the number for defining stator canine tooth (2) are
NS, the sum of stator carnassial tooth (3) is NL, then have NL=m × NS。
4. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 3, which is characterized in that institute
The carnassial tooth slot number that the stator carnassial tooth (3) stated is formed is NLS, the carnassial tooth sum of stator carnassial tooth (3) 1 or compares carnassial tooth more than carnassial tooth slot
Slot few 1, that is, have NLS=NL±1。
5. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The winding (4) stated is placed in the slot formed by stator canine tooth (2), and definition winding number of pole-pairs is PW, number of rotor teeth NR, then have
PW=| NL-NR|。
6. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The shape for the stator carnassial tooth (3) stated includes rectangle, trapezoidal, semicircle and sinusoidal.
7. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The shape of the stator permanent magnet (5), rotor permanent magnet (8) stated includes rectangle, trapezoidal, semicircle, sinusoidal and Halbach
Shape.
8. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The stator yoke (1) stated, stator canine tooth (2), stator carnassial tooth (3), rotor yoke (6), rotor tooth (7) are all made of permeability magnetic material and are made,
Permeability magnetic material includes silicon steel sheet, pure iron, electrical sheet, permalloy.
9. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that institute
The magnetizing direction of the stator permanent magnet (5), rotor permanent magnet (8) stated it is unified radially inward or radially.
10. a kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement according to claim 1, which is characterized in that
The permanent magnet material of the stator permanent magnet (5), rotor permanent magnet (8) includes neodymium iron boron, ferrite, SmCo.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811036928.XA CN108900055A (en) | 2018-09-06 | 2018-09-06 | A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement |
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| CN201811036928.XA CN108900055A (en) | 2018-09-06 | 2018-09-06 | A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement |
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| CN114977558A (en) * | 2022-06-10 | 2022-08-30 | 合肥工业大学 | Method for selecting slot number matching of double-stator true fraction slot permanent magnet synchronous motor |
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| CN114421658A (en) * | 2022-01-29 | 2022-04-29 | 西安交通大学 | Axial staggered permanent magnet motor |
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