CN110022013A - A kind of poles oblique and the asymmetric rotor of salient pole and high-performance permanent magnet motor - Google Patents
A kind of poles oblique and the asymmetric rotor of salient pole and high-performance permanent magnet motor Download PDFInfo
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- CN110022013A CN110022013A CN201910458903.7A CN201910458903A CN110022013A CN 110022013 A CN110022013 A CN 110022013A CN 201910458903 A CN201910458903 A CN 201910458903A CN 110022013 A CN110022013 A CN 110022013A
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- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- 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
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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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 present disclosure proposes a kind of poles oblique and the asymmetric rotor of salient pole and high-performance permanent magnet motor, the oblique pole of magnetic pole are implemented in a magnetic pole pole span, and salient pole is arranged in magnetic pole side, have asymmetry in circumferencial direction.The rotor design of high-performance permanent magnet motor, which can not only reduce torque pulsation, can also effectively avoid the decline of output torque after reduction torque pulsation, realize low torque ripple, the high torque density operation of motor, the performance of motor is substantially improved, it is specific: 1) to reduce cogging torque；2) it generates sinusoidal or quasi sine counter electromotive force and reduces torque pulsation；3) adjacent pole is axially non-overlapping, avoids torque density decaying excessive；Asymmetric field spider structure, it is superimposed reluctance torque and the maximum value of permanent-magnet torque under same or similar current phase angle, to make up torque loss caused by the oblique pole of magnetic pole by the utilization rate for improving two kinds of moment components, guarantee to keep high torque density while motor low torque ripple.
Description
Technical field
This disclosure relates to magneto correlative technology field, in particular to a kind of poles oblique and salient pole is not right
The rotor and high-performance permanent magnet motor of title.
Background technique
The statement of this part only there is provided background technical information relevant to the disclosure, not necessarily constitutes first skill
Art.
With the development of rare earth permanent-magnetic material, magneto is significant due to its high efficiency, high power density, high reliability etc.
Advantage is widely applied in every field such as electric car, wind-power electricity generation, Ship Propelings.Since the structure of magneto is a variety of
Multiplicity, therefore to the optimization design of permanent magnet motor structure, magneto various aspects of performance can be made to be promoted to greatest extent.
According to placement location of the permanent magnet on rotor, it is broadly divided into surface-mounted permanent magnet machine, surface embedded type Permanent Magnet and Electric
Machine and interior permanent magnet machines.Wherein, surface embedded type magneto has saliency compared with surface-mounted permanent magnet machine, because
This electromagnetic torque not only has permanent-magnet torque, can also generate reluctance torque, therefore generate higher torque density and efficiency, and
With preferable weak magnetic speed control performance；Compared with built-in permanent magnetic motor, structure is simple and manufacturing cost is lower；Therefore, surface
Embedded magneto has extraordinary application prospect because of its preferable comprehensive performance.
But there are also problems for surface embedded type magneto: although 1) surface embedded type magneto electromagnetic torque comprising
Two kinds of moment components of permanent-magnet torque and reluctance torque, but two kinds of moment components are not fully used in traditional design, because
45 degree of current phase angles of maximum value phase difference are respectively reached for permanent-magnet torque and reluctance torque.2) because of saliency, surface is embedding
Higher torque pulsation can be generated by entering formula magneto.The torque pulsation inhibited method of magneto has been widely studied, for example,
Rotor circumferential direction piecemeal, rotor pole arc cut pole, oblique pole, rotor surface fluting, asymmetric magnetic barrier etc..Particularly, oblique pole technology is suppression
A kind of effective ways of torque pulsation processed have many documents and have carried out deep discussion and research to this method.Most start
The magnetic pole for obtaining excursion motor from simulation analysis has the conclusion for weakening cogging torque, then has scholar on the basis of theory analysis
On propose the determination method of some deviation angles.With continuously improving for method, effect is become better and better.But oblique pole method tool
There are some disadvantages, for example reduces the torque density of motor.And for motor, torque density often pulse more by specific torque
It is important, so, improvement cause because of the oblique pole of permanent magnet magneto torque density decline the problem of be worth going into seriously.But at present
Documents and materials display reduce torque pulsation but holding torque density design of electrical motor technology it is difficult to realize.
Summary of the invention
The disclosure to solve the above-mentioned problems, proposes a kind of poles oblique and the asymmetric rotor of salient pole, applies forever
On magneto such as surface embedded type magneto, torque pulsation can not only be reduced, moreover it is possible to effectively avoid after reducing torque pulsation
The problem of output torque declines.
Disclosure second aspect also proposed a kind of a kind of Permanent Magnet and Electric based on poles oblique and the asymmetric rotor of salient pole
Machine effectively combines magnetic pole misalignment and asymmetric field spider, realizes low torque ripple, the high torque density operation of motor, effectively
Improve motor performance index.
The disclosure adopts the following technical scheme that
One or more embodiments provide a kind of poles oblique and the asymmetric rotor of salient pole, including rotor core and set
The magnetic pole on rotor core is set, each magnetic pole includes the salient pole being disposed alternately on rotor core and rotor slot, the rotor
Segment permanent magnet body is set in slot, and each section of permanent magnet extends along rotor shaft direction to be arranged, and is successively pressed on rotor core circumference
The angular misalignment of setting arranges.
One or more embodiments provide a kind of inclination of rotor magnetic pole and the asymmetric magneto of salient pole, including above-mentioned
A kind of poles oblique and the asymmetric rotor of salient pole, stator and shaft, the rotor and stator coaxial arrangement, rotor is by turning
There are gaps between stator interior, the rotor and stator for axis setting.
The sloping magnetic poles that the disclosure is obtained by using permanent magnet segmentation dislocation method, applying can have in magneto
The weakening slot effect of effect reduces cogging torque, while reducing counter electromotive force harmonic content, and it is anti-electronic to generate sinusoidal or quasi sine
Gesture and reduce torque pulsation so that motor output torque is more steady.
Compared with prior art, the disclosure has the beneficial effect that
The magneto based on a kind of poles oblique and the asymmetric rotor of salient pole that the disclosure proposes, so that surface is embedded in
The torque pulsation of formula magneto declines torque density not while reduction, and specific: 1) disclosure is by using magnetic pole
It is segmented dislocation method, can effectively weaken slot effect, reduces cogging torque, while reducing counter electromotive force harmonic content, is produced
It gives birth to sinusoidal or quasi sine counter electromotive force and reduces torque pulsation, so that motor output torque is more steady；2) magnetic pole segment fault
Position is realized in a magnetic pole pole span, keeps adjacent pole axially non-overlapping, avoids torque density decaying excessive；3) by using not
Symmetrical field spider structure, is superimposed reluctance torque and the maximum value of permanent-magnet torque under same or similar current phase angle,
45 degree of current phase angles being less than in traditional design, thus oblique to make up magnetic pole by the utilization rate for improving two kinds of moment components
Torque loss caused by pole guarantees to keep high torque density while motor low torque ripple.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is the embedded permanent magnet motor structure schematic diagram of existing conventional surface；
Fig. 2 is the skewed-rotor schematic diagram of the embodiment of the present disclosure 1；
Fig. 3 is the equivalent magnetic pole and equivalent salient pole schematic diagram of the embodiment of the present disclosure 1；
Fig. 4 is that the asymmetrical rotor of the embodiment of the present disclosure 2 influences the schematic diagram of motor torque；
Fig. 5 is the rotor schematic three dimensional views of the embodiment of the present disclosure 1；
Fig. 6 is the permanent magnet motor structure top view of the embodiment of the present disclosure 2；
Fig. 7 is that embodiment of the present disclosure conventional motors (basic model) and example motor (proposing model) back-emf comparison is illustrated
Figure；
Fig. 8 is the example motor of the embodiment of the present disclosure 2 and the cogging torque contrast schematic diagram of conventional motors；
Fig. 9 is torque seperated schematic diagram when 2 motor permanent magnet of embodiment of the present disclosure example is not close to salient pole；
Figure 10 is torque seperated schematic diagram when 2 motor permanent magnet of embodiment of the present disclosure example is close to salient pole；
Figure 11 is the example motor of the embodiment of the present disclosure 2 and the permanent-magnet torque contrast schematic diagram of conventional motors；
Figure 12 is the example motor of the embodiment of the present disclosure 2 and the electromagnetic torque contrast schematic diagram of conventional motors；
Wherein: 1, stator, 2, stator winding, 3, salient pole, 3-1,3-2, salient pole second side, 4, permanent magnet, 5, rotor,
5-1, rotor slot, 5-2, rotor core, 6, field axis, 7, shaft, 8, first end face, 9, second end face.
Specific embodiment:
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.It should be noted that not conflicting
In the case where, the feature in embodiment and embodiment in the disclosure can be combined with each other.Below in conjunction with attached drawing to embodiment
It is described in detail.
Embodiment 1
In the technical solution disclosed in one or more embodiments, as it can be seen in figures 5 and 6, a kind of poles oblique and convex
Pole asymmetric rotor, including rotor core 5-2 and the magnetic pole being arranged on rotor core 5-2, each magnetic pole includes being arranged alternately
Segment permanent magnet body 4, each section of 4 edge of permanent magnet are set in the salient pole 3 and rotor slot 5-1, the rotor slot 5-1 on rotor core
7 direction of shaft extend arrangement, and on rotor core 5-2 circumference successively by setting angular misalignment arrangement.The disclosure passes through
The sloping magnetic poles that dislocation method obtains are segmented using permanent magnet 4, slot effect can effectively be weakened in magneto by applying,
Cogging torque is reduced, while reducing counter electromotive force harmonic content, sinusoidal or quasi sine counter electromotive force is generated and reduces torque pulsation,
So that motor output torque is more steady.
It is as shown in Figure 1 traditional symmetric rotor structure, the permanent magnet of existing symmetrical rotor structure is from rotor
One end face is to extend according to shaft to other end, if the geometric center lines for defining each magnetic pole are field axis 6, permanent magnetism
Body opposing polarities axisymmetrical.Each section of permanent magnet 4 along rotor shaft direction extend arrangement refer to permanent magnet according to rotor shaft direction from
First end face 8 is aligned to second end face 9.On rotor core circumference successively by setting angular misalignment arrangement, refer to each section forever
Magnet 4 is staggered certain angle in rotor core circumferencial direction, can be structure as shown in figures 2 and 5.It is illustrated with Fig. 2,
One magnetic pole includes a rotor slot 5-1 and a salient pole 3, after permanent magnet segmentation is staggered, relative to 6 Fig. 2 of field axis
Middle permanent magnet 4 is left-right asymmetry, forms the asymmetric structure of permanent magnet 2.
As a further improvement, the shape of each section of permanent magnet 4 can be identical, and radially projecting can be rectangle.When
When radially projecting's rectangle, by stepping biasing cogging torque can be made to minimize, each section of permanent magnet with segmented shape along turn
Axis side extends arrangement, and is successively pressed after the angular misalignment set arranges on rotor core circumference into a ladder, can be Fig. 5 institute
The structure shown.
As a further improvement, at least one side of salient pole extends along rotor shaft direction.As shown in figure 5, salient pole in figure
Two side faces 3-1 extends along rotor shaft direction, and state straight up and down is presented, and the permanent magnet of different two rotor slot 5-1 is axial without folded
Add.
As a further improvement, as shown in figure 5, setting asymmetric structure, salient pole first side 3-1 for salient pole 3
With the stepped interaction of segmentation permanent magnet being obliquely installed, salient pole second side 3-1 extends along rotor shaft direction, salient pole second side
3-1 is in contact with the side of every section of permanent magnet.
Rotor slot 5-1 is formed between two neighboring salient pole, the structure of rotor slot 5-1 is determined by the structure of salient pole, when
The setting of salient pole side is adapted with the structure of permanent magnet 4 into a ladder, and the structure of rotor slot 5-1 is and the ladder-like phase in salient pole side
The space that the formation permanent magnet of adaptation can be set is set as forming stair-stepping structure, mono- lateral edge rotor shaft direction of rotor slot 5-1
Extend, the other side rotor slot 5-1 reserves permanent magnet inclined spaces.
Optionally, permanent magnet of the segment permanent magnet body 4 along the both ends of rotor shaft direction contacts setting with salient pole 3 respectively.That is Fig. 3
In shown position in, uppermost one section of permanent magnet topmost contacts setting, one section of permanent magnetism of the lowermost with the salient pole 3 in left side
Body contacts setting with 3 bottom of salient pole on right side.
As shown in figure 3, the tilt angle of segment permanent magnet body 4 determines the degree that permanent magnet is staggered, adjacent two sections of permanent magnetism
The determination method of the tilt angle of body 4 are as follows: cogging torque is by the interaction between rotor permanent magnet 4 and stator tooth slot structure
It generates, cogging torque can be made to minimize by stepping biasing.The tilt angle of adjacent two sections of permanent magnets 4 is equal to:
In formula, θskewingFor the inclination angle between adjacent two step, HCF is greatest common divisor function, and Q is number of stator slots, and p is
Number of pole-pairs, n are ladder-like permanent magnetism solid offsetting step number, and offset step number is that segments subtracts n=6 in 1, Fig. 3.
The 3 two dimensional equivalent figure of permanent magnet 4 and asymmetric salient pole of rotor tilt is obtained as shown in Figure 3, is every section of oblique pole in figure
Angle is θskew, θ in figuredqIt is θ in figure for the electrical angle of d-axis and quadrature axismThe radian of one section of permanent magnet is θ in figurepmIt is one
Total pole span angle (radian) of pole magnetic pole 4 and salient pole 3, θ in figurer(i)For maximum salient pole radian, d in figureeFor d-axis, q in figureeFor
Quadrature axis.Stair-stepping permanent magnet 4 interacts into a ladder with 3 first side 3-1 of salient pole in figure, and 3 second side 3-2 of salient pole is straight line
Type extends along 7 direction of shaft.
Further, torque is seriously degenerated in order to prevent, in a permanent magnet pole away from interior, creates a constraint
nθskewing+θm≤θpm (2)
In formula, θmPitch angle between adjacent permanent magnet, θpmFor permanent magnet pole elongation.
Further, it is illustrated in figure 2 rotor magnetic pole step skewed pole schematic diagram, the segments n of permanent magnet can be set, this
It is only the numerical value for being convenient for illustrating setting that the rotor magnetic pole is segmented into 7 ends by embodiment 1, according to institute's formula (1) and formula (2)
It can obtain, the adjacent two sections of permanent magnet deviation angles of grading excursion rotor described in this example 1 are 5 degree.
Embodiment 2
The present embodiment provides a kind of inclined magneto of rotor magnetic pole, including rotor, stator and shaft, the rotor and
Stator coaxial arrangement, rotor are arranged between stator interior, the rotor and stator by shaft there are gap, and the rotor is adopted
With a kind of poles oblique described in embodiment 1 and asymmetric rotor.
As shown in fig. 6, stator includes stator core and stator slot, stator winding 2, the stator are set in the stator slot
Winding 2 and 5 periphery of rotor form radial clearance 18.
Stator slot circumferentially arranged at equal intervals in the inner circumferential of stator 1, prolong from stator core side to rotor shaft direction
It is stretched into convex shape.Stator can be common six slot structure.
The present embodiment 2 makes reluctance torque and the maximum value of permanent-magnet torque in phase by using asymmetric field spider structure
It is superimposed under same or similar current phase angle, to be caused by the utilization rate for improving two kinds of moment components to make up the oblique pole of magnetic pole
Torque loss, guarantee motor low torque ripple while keep high torque density.
A kind of poles oblique described in this magneto Application Example 1 and asymmetric rotor of salient pole reaches above-mentioned effect
The principle of fruit is as follows:
If Fig. 4 creation asymmetrical rotor structure keeps rotor permanent magnet 4 close to rotor with salient pole 3, so that reluctance torque and forever
The maximum value of magnetic torque is superimposed at same current phase angle, to obtain maximum output torque.Upper figure explanation is in permanent magnetism in Fig. 4
When the rotor of motor is symmetric rotor, the maximum value of reluctance torque and permanent-magnet torque can not fold everywhere at same current phase angle
Add, but differ 45 electrical angles, so that torque utilization rate does not reach maximum.Following figure explanation is in using embodiment 1 in Fig. 4
Rotor structure, rotor permanent magnet 4 is close to rotor with salient pole 3, so that reluctance torque and the maximum value of permanent-magnet torque are in identical electricity
It flows and is superimposed at phase angle, to obtain maximum output torque by the utilization rate for improving two kinds of moment components.This embodiment 2
Torque loss caused by the oblique pole of magnetic pole is made up by asymmetrical rotor, guarantees to keep high torque (HT) while motor low torque ripple
Density.
The target of asymmetrical rotor design is determined as maximum average torque, bound variable is 4 width of rotor permanent magnet, rotor
3 width of salient pole and rotor permanent magnet 4 are to 3 deviation angle of rotor with salient pole.How the numerical value of above-mentioned bound variable, Ke Yichong are set
Divide using moment component to obtain maximum electromagnetic torque.All excitations can be obtained first using by freezing magnetic conductivity method
Generated total torque obtains reluctance torque after then removing permanent magnet, subtracts reluctance torque finally by total torque and obtains forever
Magnetic torque, the numerical value for converting bound variable see whether to meet design object by finite element software.
The effect of the improvement structure of undeclared the present embodiment, has carried out simulation analysis, specific as follows:
Emulation uses the magneto of 4 magnetic pole pole, 6 stator slot as example motor or to propose model, according to along shaft
Total electrical angle that direction extends the permanent magnet dislocation of the two ends of rotor of arrangement is 30 °.Same magnetic pole phase is obtained according to segments
5 ° of setting of adjacent two permanent magnets dislocation.Permanent magnet after step skewed pole is close to rotor with salient pole, forms asymmetrical rotor structure,
So that reluctance torque and the maximum value of permanent-magnet torque are superimposed to promote electromagnetic torque at same or similar current phase angle, solution
Determined magneto because tiltedly extremely caused by torque density decline problem.Basic motor and basic model are using symmetric rotor structure
Conventional motors.
As shown in Fig. 7-Figure 12, basic model shown in figure is the conventional motors before improving, after proposing that model is improvement
Motor.Due to rotor magnetic pole step skewed pole be arranged, as shown in Figure 7 it can be seen that motor back-emf, example motor it is anti-
Potential obviously tends to sinusoidalization than conventional motors.Such as Fig. 8 it can be seen that the cogging torque of motor, the cogging torque of this example motor
It is obviously smaller than conventional motors.It is illustrated in figure 9 conventional motors torque stalling characteristic figure, permanent-magnet torque torque and reluctance torque difference
Reach 45 degree of current phase angles of maximum value phase difference, two kinds of moment components do not make full use of；It is as shown in Figure 10 the present embodiment
Torque stalling characteristic figure, permanent-magnet torque torque and reluctance torque respectively reach 30 degree of current phase angles of maximum value phase difference, are promoted
The utilization rate of two kinds of moment components, the torque lost by oblique pole are compensated.It can be by the optimization design of rotor with salient pole
One step reduces the current angle of two kinds of moment component maximum values difference, further promotes output torque.
As shown in figure 11 it can be seen that the permanent-magnet torque figure of motor, this example motor is due to permanent-magnet torque caused by oblique pole
It pulses smaller than conventional motors, shows the validity of disclosure poles oblique technology, but average torque also becomes smaller, illustrate if single
It is pure that using the oblique pole technology of magnetic pole, there are limitations.It is as shown in figure 12 electromagnetic torque comparison diagram, basic model is conventional motors electricity
Magnetic torque, proposition model are the torque of this example motor electromagnetic, and the torque pulsation of this example motor electromagnetic is more obvious than conventional motors to become smaller,
Output torque identical with basic model is kept simultaneously, shows disclosure asymmetry salient pole technology by promoting moment component benefit
The validity of output torque is improved with rate.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure
The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.
Claims (10)
1. a kind of poles oblique and the asymmetric rotor of salient pole, it is characterized in that: including rotor core and setting on rotor core
Magnetic pole, each magnetic pole includes the salient pole being disposed alternately on rotor core and rotor slot, and segmented is arranged in the rotor slot
Permanent magnet, each section of permanent magnet extends along rotor shaft direction to be arranged, and successively by the angular misalignment of setting on rotor core circumference
Arrangement.
2. a kind of poles oblique as described in claim 1 and the asymmetric rotor of salient pole, it is characterized in that: the salient pole at least one
A side extends along rotor shaft direction.
3. a kind of poles oblique as claimed in claim 2 and the asymmetric rotor of salient pole, it is characterized in that: the first side of the salient pole
Face and the stepped interaction of segmentation permanent magnet being obliquely installed, salient pole second side extend along rotor shaft direction.
4. a kind of poles oblique as described in claim 1 and the asymmetric rotor of salient pole, it is characterized in that: each section of permanent magnet
Shape it is identical, each section of permanent magnet is arranged along rotor shaft direction, and by setting angular misalignment arrangement after it is stepped.
5. a kind of poles oblique as claimed in claim 4 and the asymmetric rotor of salient pole, it is characterized in that: each section of permanent magnet
Shape radially projecting is rectangle.
6. a kind of poles oblique as described in any one in claim 1-5 and the asymmetric rotor of salient pole, it is characterized in that: along shaft
The permanent magnet at direction segment permanent magnet body both ends contacts setting with salient pole respectively.
7. a kind of poles oblique as claimed in claim 6 and the asymmetric rotor of salient pole, it is characterized in that: same magnetic pole adjacent two
The tilt angle of a permanent magnet dislocation are as follows:
In formula, θskewingInclination angle between two adjacent permanent magnets, HCF are greatest common divisor function, and Q is number of stator slots, p
For number of pole-pairs, n is ladder-like permanent magnetism solid offsetting step number, and offset step number is that permanent magnet segments subtracts 1.
8. a kind of rotor magnetic pole inclination and the asymmetric magneto of salient pole, it is characterized in that: including any one of claim 1-7 institute
A kind of poles oblique and the asymmetric rotor of salient pole, stator and shaft stated, the rotor and stator coaxial arrangement, rotor pass through
There are gaps between stator interior, the rotor and stator for shaft setting.
9. a kind of rotor magnetic pole inclination as claimed in claim 8 and the asymmetric magneto of salient pole, it is characterized in that:
The stator includes stator core and stator slot, and stator winding, the stator winding and rotor outer periphery is arranged in the stator slot
Form radial clearance.
10. the Permanent Magnet and Electric of a kind of rotor magnetic pole inclination as claimed in claim 8 and the asymmetric magneto of salient pole
Machine, it is characterized in that: stator slot circumferentially arranged at equal intervals in the inner circumferential of stator, from stator core side to rotor shaft direction
Extend.
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| CN201910458903.7A CN110022013B (en) | 2019-05-29 | 2019-05-29 | Rotor with inclined magnetic poles and asymmetric salient poles and high-performance permanent magnet motor |
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| CN201910458903.7A CN110022013B (en) | 2019-05-29 | 2019-05-29 | Rotor with inclined magnetic poles and asymmetric salient poles and high-performance permanent magnet motor |
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| CN110994828A (en) * | 2019-12-18 | 2020-04-10 | 杭州易泰达科技有限公司 | Rotor oblique pole structure for improving running characteristic of synchronous reluctance motor |
| CN111106681A (en) * | 2019-11-29 | 2020-05-05 | 南京航空航天大学 | Four-phase sine wave electro-magnetic doubly salient motor |
| CN112448502A (en) * | 2019-09-05 | 2021-03-05 | 中车时代电动汽车股份有限公司 | Surface-mounted rotor of vehicle permanent magnet driving motor |
| WO2022041296A1 (en) * | 2020-08-28 | 2022-03-03 | 李天德 | Energy-saving member |
| CN114829286A (en) * | 2019-12-16 | 2022-07-29 | 株式会社日立制作所 | Hoist and elevator |
| CN115580045A (en) * | 2022-11-11 | 2023-01-06 | 杭州恒业电机制造有限公司 | Oblique pole permanent magnet structure, permanent magnet stator, permanent magnet rotor and manufacturing method thereof |
| CN116992722A (en) * | 2023-08-01 | 2023-11-03 | 山东大学 | Rotor salient pole optimization method and system for switched reluctance motor |
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