CN105245043B - A kind of step skewed pole formula permanent-magnetic synchronous motor rotor - Google Patents
A kind of step skewed pole formula permanent-magnetic synchronous motor rotor Download PDFInfo
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- CN105245043B CN105245043B CN201510658612.4A CN201510658612A CN105245043B CN 105245043 B CN105245043 B CN 105245043B CN 201510658612 A CN201510658612 A CN 201510658612A CN 105245043 B CN105245043 B CN 105245043B
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Abstract
The purpose of the present invention is to provide a kind of step skewed pole formula permanent-magnetic synchronous motor rotor, mainly solve the problems, such as that structure is complicated, at high cost for existing step skewed pole formula permanent-magnetic synchronous motor rotor.The step skewed pole formula permanent-magnetic synchronous motor rotor includes main shaft, at least two sections of annular permanent magnets are arranged on the main shaft, first is provided with every magnetic baffle ring between adjacent two annular permanent magnet, described first every being provided with location structure on magnetic baffle ring, circumferential positioning is carried out for the annular permanent magnet to its two sides, so that at least two sections of annular permanent magnets described in axial alignment along the main shaft successively deflect predetermined angle θ along the same rotation direction around axis, step skewed pole is realized by the location structure, at least two sections of annular permanent magnet geomeries are identical.Step skewed pole is easily realized every the location structure on magnetic baffle ring by first, reduces the cogging torque of motor, and structure is simple, at low cost, problem the bottleneck that can not processing that can solve the annular magnetic steel of current larger size.
Description
Technical field
The present invention relates to motor fields, and in particular to a kind of step skewed pole formula permanent-magnetic synchronous motor rotor.
Background technique
Skewed-rotor from principle it is considered that almost the same with skewed stator slot, it is common there are two ways to, such as Fig. 1 and figure
Shown in 2.As shown in Figure 1, continuous oblique pole effect and skewed stator slot are essentially identical, but the magnet steel of this shape can greatly improve magnet steel
Production cost, be unfavorable for producing in enormous quantities.As shown in Fig. 2, the oblique pole method of rotor segment not only has preferable slot ripples and tooth
Slot torque weakens effect, and advantageously reduces the processing cost of magnet steel.In order to facilitate manufacture, the effect of oblique pole is usually adopted
With the method for rotor magnetic pole segmentation dislocation method.
The structure realized using the method for step skewed pole and reduce cogging torque of permanent magnet motor, such as Fig. 3 are mentioned in the prior art
Shown to use the oblique pole of surface-mount type magnet steel, but a kind of relatively elaboration of generally acknowledged theory, there is no substantive propositions can be realized tiltedly
The measure of pole.
In the prior art it is also mentioned that a kind of step skewed pole formula permanent-magnetic synchronous motor rotor, structure is as shown in figure 4, the structure
Although preferable tiltedly pole effect can be played, structure is considerably complicated, individually pursues performance in a certain respect and keeps structure excessively multiple
Hydridization is simultaneously undesirable, and excessively complicated structure itself will lead to the uncontrollability of motor performance.
In view of the above-mentioned problems, it is urgent to provide a kind of new step skewed pole formula permanent-magnetic synchronous motor rotors, to solve existing skill
The problem that structure is complicated present in art, at high cost.
Summary of the invention
In view of this, the present invention provide a kind of structure it is simple, it is at low cost, can easily realize that the segmentation of step skewed pole is oblique
Pole permanent magnet synchronous motor rotor.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of step skewed pole formula permanent-magnetic synchronous motor rotor, including main shaft are arranged at least two sections of annulars on the main shaft
It is fixed every being provided on magnetic baffle ring every magnetic baffle ring, described first to be provided with first between adjacent two annular permanent magnet for permanent magnet
Bit architecture carries out circumferential positioning for the annular permanent magnet to its two sides, so that along the axial alignment of the main shaft
At least two sections of annular permanent magnets successively deflect predetermined angle θ along the same rotation direction around axis, are tied by the positioning
Structure realizes step skewed pole, and at least two sections of annular permanent magnet (2) geomeries are identical.
Preferably, the side phase of the described first annular permanent magnet every the two sides of magnetic baffle ring respectively and corresponding thereto
Fitting.
Preferably, the both ends of at least two sections annular permanent magnets are provided with second every magnetic baffle ring, and described second every magnetic
Baffle ring and the main shaft are interference fit；
Described second two sides opposite between magnetic baffle ring and the annular permanent magnet adjacent thereto are bonded setting.
It preferably, further include being placed on described first every magnetic baffle ring, at least institute at two sections of annular permanent magnets and both ends
Second is stated every the sheath outside magnetic baffle ring, the sheath with described first every magnetic baffle ring, at least two sections of annular permanent magnets and
Described the second of both ends is interference fit every magnetic baffle ring.
Preferably, described first is to be interference fitted with the main shaft every magnetic baffle ring.
Preferably, the location structure include be set to described first every the first side of magnetic baffle ring two the first convex ribs and
Be set to described first every magnetic baffle ring second side two the second convex ribs, described two first convex ribs and described two second convex ribs
Line pass through described first every the center of magnetic baffle ring, and the angle between two lines is in the predetermined angle θ；
With described first every be provided on the opposite annular permanent magnet in the first side of magnetic baffle ring respectively with it is described two
First groove of the first convex ribs cooperation, is provided with described first every on the opposite annular permanent magnet of second side of magnetic baffle ring
The second groove cooperated respectively with described two second convex ribs.
Preferably, the predetermined angle θ passes through formula
It obtains,
Wherein, Z is number of stator slots；P is number of pole-pairs；N is magnet steel axial segmentation number；LCM (Z, 2p) indicate number of stator slots Z and
The least common multiple of motor pole number 2p.
Preferably, the annular permanent magnet is for clearance fit and Nian Jie with the main shaft by binder with the main shaft.
Preferably, sheath material is nickel-base alloy, titanium alloy or carbon fibre material.
The beneficial effects of the present invention are:
Step skewed pole formula permanent-magnetic synchronous motor rotor provided by the invention is arranged at least two sections of annulars forever on main shaft
Magnet, between adjacent annular permanent magnet setting first every magnetic baffle ring, and by first every the location structure on magnetic baffle ring to annular
Permanent magnet carries out circumferential positioning so that along main shaft axial alignment at least two sections of annular permanent magnets along around the same of axis
One rotation direction successively deflects predetermined angle, to easily realize step skewed pole, reduces the cogging torque of motor, structure letter
It is single, at low cost, problem the bottleneck that can not processing that can solve the annular magnetic steel of current larger size.
Detailed description of the invention
By referring to the drawings to the description of the embodiment of the present invention, the above and other purposes of the present invention, feature and
Advantage will be apparent from, in the accompanying drawings:
Fig. 1 is rotor continuous oblique pole schematic diagram；
Fig. 2 is the oblique pole schematic diagram of rotor segment；
Fig. 3 is a kind of existing step skewed pole implementation method schematic diagram；
Fig. 4 is existing another step skewed pole formula permanent-magnetic synchronous motor rotor schematic diagram；
Fig. 5 is the cross-sectional view for the step skewed pole formula permanent-magnetic synchronous motor rotor that the specific embodiment of the invention provides；
Fig. 6 is the explosive view for the step skewed pole formula permanent-magnetic synchronous motor rotor that the specific embodiment of the invention provides；
Fig. 7 be the specific embodiment of the invention provide annular permanent magnet and first every magnetic baffle ring matching chart.
In figure, 1, main shaft；11, first segment axis；12, second segment axis；13, third section axis；2, annular permanent magnet；21, first
Groove；22, the second groove；3, first every magnetic baffle ring；31, the first convex ribs；32, the second convex ribs；4, second every magnetic baffle ring；5, it protects
Set.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in datail description of the invention.Do not have for a person skilled in the art
The present invention can also be understood completely in the description of these detail sections.In order to avoid obscuring essence of the invention, well known method, mistake
There is no narrations in detail for journey, process, element.
Step skewed pole formula permanent-magnetic synchronous motor rotor provided by the invention includes main shaft, and at least two sections of rings are arranged on main shaft
Shape permanent magnet, first is provided between adjacent two annular permanent magnet every magnetic baffle ring, and first every being provided with location structure on magnetic baffle ring,
Circumferential positioning is carried out for the annular permanent magnet to its two sides, so that at least two sections of annular permanent magnets of the axial alignment along main shaft
Body successively deflects predetermined angle θ along the same rotation direction around axis.It is convenient every the location structure on magnetic baffle ring by first
It realizes step skewed pole, reduces the cogging torque of motor, structure is simple, and it is at low cost, it can solve the annular magnetic of current larger size
The bottleneck that steel can not be processed problem.
In engineering, the selection of step skewed pole motor axial direction segments is often less, when producing in enormous quantities, it is contemplated that processing
Convenience, also it is not recommended that the axial segmentation number of rotor is excessive.Meanwhile magnetic is also limited in terms of high speed rotor of motor structural strength
Steel shaft is to segments.The axial segmentation number of motor can be selected according to the actual conditions of rotor core, it is not necessary to excessively pursuit high score
Number of segment: axial segmentation number is small, still can produce to each harmonic, cogging torque and torque pulsation in the oblique reasonable situation of polar angle
It is raw preferably to slacken effect.In mass production, the processing cost of magnet steel can be substantially reduced.
Illustrate the embodiment of step skewed pole formula permanent-magnetic synchronous motor rotor of the invention referring to Fig. 5 and Fig. 6.
Axial segments is two sections in the present embodiment, as shown in Figure 5 and Figure 6, two sections of annular permanent magnets is arranged on main shaft 1
2, first is provided with every magnetic baffle ring 3 between adjacent two annular permanent magnet 2.First, every being provided with location structure on magnetic baffle ring 3, is used for
Circumferential positioning is carried out to the annular permanent magnet 2 of its two sides, so that wherein an annular permanent magnet 2 is relative to another annular permanent magnet
Body 2 deflects predetermined angle θ around axis, to realize step skewed pole.
Location structure is unlimited, can be realized to the circumferentially positioned of annular permanent magnet 2, in a preferred embodiment,
As shown in fig. 7, location structure include be set to first every 3 first side of magnetic baffle ring two the first convex ribs 31 and be set to first
Every two second convex ribs 32 of 3 second side of magnetic baffle ring, the line of two the first convex ribs 31 and two the second convex ribs 32 passes through
One every the center of magnetic baffle ring 3, and the angle between two lines is in predetermined angle θ.
With first every be provided on the opposite annular permanent magnet 2 in the first side of magnetic baffle ring 3 respectively with two the first convex ribs 31
First groove 21 of cooperation, with first every be provided on the opposite annular permanent magnet 2 of second side of magnetic baffle ring 3 respectively with two the
Second groove 22 of two convex ribs 32 cooperation.It is realized by the cooperation of convex ribs and groove to the circumferentially positioned of two annular permanent magnets 2, knot
Structure is simple, and it is convenient to realize.
Further, the side of the first annular permanent magnet 2 every the two sides of magnetic baffle ring 3 respectively and corresponding thereto is affixed
It closes.With convex ribs first every magnetic baffle ring 3 not only it is possible to prevente effectively from permanent magnet axial direction leakage field, but also can more conveniently realize forever
The oblique pole of magnet solves the problems, such as that magneto is tiltedly extremely difficult.
Further, the both ends of two annular permanent magnets 2 are provided with second every magnetic baffle ring 4, second every magnetic baffle ring 4 and and its
Opposite two sides are bonded setting between adjacent annular permanent magnet 2, thus, it realizes every magnetic and determines every magnetic baffle ring 4 by second
Position.
As a preferred method, first every magnetic baffle ring 3 and second every magnetic baffle ring 4 with main shaft 1 be interference fit, annular
Permanent magnet 2 is for clearance fit and Nian Jie with main shaft 1 by binders such as glue with main shaft 1.
It further, further include being placed on first to keep off every the second of 3, two sections of annular permanent magnets 2 of magnetic baffle ring and both ends every magnetic
Sheath 5 outside ring 4, sheath 5 are every magnetic baffle ring 4 every the second of 3, two sections of annular permanent magnets 2 of magnetic baffle ring and both ends with first
Interference fit.By 5 protective effect of sheath, p-m rotor is safely operated.
The structure of main shaft 1 is preferably, including three sections of axis being sequentially reduced from one end to two one end diameters, respectively first segment
Axis 11, second segment axis 12 and third section axis 13, wherein third section axis 13 from close to second segment axis 12 one end to the other end according to
It is secondary be arranged second every magnetic baffle ring 4, annular permanent magnet 2, first every magnetic baffle ring 3, annular permanent magnet 2, second every magnetic baffle ring 4, it is close
The second of second segment axis 12 is bonded every magnetic baffle ring 4 with the side of second segment axis 12.One end face of sheath 5 and separate second segment axis 12
Second every magnetic baffle ring 4 lateral surface flush, other end and the side of first segment axis 11 fit.
Preferably, sheath 5 is made of materials such as nickel-base alloy, titanium alloy or carbon fibre materials.Two annular permanent magnets 2
It is all made of NdFeB material, geomery is the same, parallel magnetization, and magnetizing direction is vertical with groove direction is all obtained thereon.
In addition, predetermined angle θ passes through formula
It is preliminary to obtain and optimize,
Wherein, Z is number of stator slots；P is number of pole-pairs；N is magnet steel axial segmentation number；LCM (Z, 2p) indicate number of stator slots Z and
The least common multiple of motor pole number 2p.In addition, predetermined angle θ can also be obtained by empirical value.
It is understood that the quantity of annular permanent magnet 2 is not limited to be two sections, can be configured according to specific requirements.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
It will also be appreciated that example embodiment is provided, so that the disclosure is comprehensive, and its range is sufficiently conveyed
To those skilled in the art.Many specific details (such as particular elements, the example of device and method) are presented to provide to this
Disclosed comprehensive understanding.It will be apparent to one skilled in the art that do not need using specific detail, example embodiment can be with much not
Same form is carried out, and example embodiment is understood not to limit the scope of the present disclosure.In some example embodiments,
Well-known device structure and widely-known technique are not described in.
When an element or layer are mentioned as in another element or layer "upper", " being engaged to ", " being connected to " or " coupled
To " another element or when layer, can directly on another element or layer, directly be engaged, be connected or coupled to another element or
Layer, or intermediary element or layer may be present.In contrast, when an element be mentioned as " direct " another element or layer "upper",
When " being bonded directly to ", " being directly coupled to " or " being directly coupled to " another element or layer, intermediary element may not be present
Or layer.Other words for describing relationship between element should be explained in a similar manner (for example, " between " with " directly exist
Between ", " neighbouring " and " being directly adjacent to " etc.).As used herein, term "and/or" includes one or more associated listed
Any or all combinations in project.
Although term first, second, third, etc. can be used for describing each component, assembly unit, region, floor and/or area herein
Section, but these component, assembly units, region, layer and/or section should not be limited by these terms.These terms can be only used for by
One component, assembly unit, region, layer or section are distinguished with another element, region, layer or section.Such as " first ", " second "
Term and other numerical value terms do not mean that order or sequence when used herein, unless clearly indicated by the context.Thus, below
First element, component, region, layer or the section of discussion are referred to alternatively as second element, component, region, layer or section, without departing from
The introduction of example embodiment.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For, the invention can have various changes and changes.All any modifications made within the spirit and principles of the present invention are equal
Replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of step skewed pole formula permanent-magnetic synchronous motor rotor, including main shaft (1), it is characterised in that: be arranged on the main shaft (1)
There are at least two sections of annular permanent magnets (2), is provided with first between adjacent two annular permanent magnet (2) every magnetic baffle ring (3), it is described
First carries out determining for circumferential direction every being provided with location structure on magnetic baffle ring (3), for the annular permanent magnet (2) to its two sides
Position so that along the main shaft (1) axial alignment at least two sections of annular permanent magnets (2) along around the same rotation side of axis
To predetermined angle θ is successively deflected, step skewed pole is realized by the location structure.
2. step skewed pole formula permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that: described first keeps off every magnetic
The side of the annular permanent magnet (2) of the two sides of ring (3) respectively and corresponding thereto fits.
3. step skewed pole formula permanent-magnetic synchronous motor rotor according to claim 2, it is characterised in that: at least two sections of rings
The both ends of shape permanent magnet (2) are provided with second
It is full of cooperation；
Described second two sides opposite between magnetic baffle ring (4) and the annular permanent magnet (2) adjacent thereto are bonded setting.
4. step skewed pole formula permanent-magnetic synchronous motor rotor according to claim 3, it is characterised in that: further include be placed on it is described
First every magnetic baffle ring (3), at least described second shield every magnetic baffle ring (4) outside at two sections of annular permanent magnets (2) and both ends
It covers (5), the sheath (5) is with described first every magnetic baffle ring (3), at least institute at two sections of annular permanent magnets (2) and both ends
It is to be interference fitted that second, which is stated, every magnetic baffle ring (4).
5. step skewed pole formula permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that: described first keeps off every magnetic
Ring (3) and the main shaft (1) are interference fit.
6. step skewed pole formula permanent-magnetic synchronous motor rotor according to any one of claims 1 to 5, it is characterised in that: described
Location structure include be set to described first every (3) first side of magnetic baffle ring two the first convex ribs (31) and be set to described the
One every magnetic baffle ring (3) second side two the second convex ribs (32), described two first convex ribs (31) and described two second convex ribs
(32) line passes through described first every the center of magnetic baffle ring (3), and the angle between two lines is in the predetermined angle θ；
With described first every being provided on the opposite annular permanent magnet (2) in the first side of magnetic baffle ring (3) respectively with described two
The first groove (21) of a first convex ribs (31) cooperation, with described first every the opposite annular of second side of magnetic baffle ring (3)
The second groove (22) respectively with the cooperation of described two second convex ribs (32) is provided on permanent magnet (2).
7. step skewed pole formula permanent-magnetic synchronous motor rotor according to any one of claims 1 to 5, it is characterised in that: described
Predetermined angle θ passes through formula
It obtains,
Wherein, Z is number of stator slots；P is number of pole-pairs；N is magnet steel axial segmentation number；LCM (Z, 2p) indicates number of stator slots Z and motor
The least common multiple of number of poles 2p.
8. step skewed pole formula permanent-magnetic synchronous motor rotor according to any one of claims 1 to 5, it is characterised in that: described
Annular permanent magnet (2) is for clearance fit and Nian Jie with the main shaft (1) by binder with the main shaft (1).
9. step skewed pole formula permanent-magnetic synchronous motor rotor according to claim 4, it is characterised in that: sheath (5) material is
Nickel-base alloy, titanium alloy or carbon fibre material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510658612.4A CN105245043B (en) | 2015-10-13 | 2015-10-13 | A kind of step skewed pole formula permanent-magnetic synchronous motor rotor |
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| CN201510658612.4A CN105245043B (en) | 2015-10-13 | 2015-10-13 | A kind of step skewed pole formula permanent-magnetic synchronous motor rotor |
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| CN105245043B true CN105245043B (en) | 2019-01-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207382B (en) * | 2015-11-10 | 2018-07-03 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of rotor and the motor including the rotor |
| CN105610291A (en) * | 2016-02-05 | 2016-05-25 | NuAge电动动力系统有限责任公司 | Ultra-low temperature permanent-magnet synchronous motor immersed into liquefied natural gas for operation |
| JP7091822B2 (en) * | 2018-05-15 | 2022-06-28 | トヨタ自動車株式会社 | Rotor |
| CN109639085A (en) * | 2019-01-28 | 2019-04-16 | 西安广源机电技术有限公司 | A kind of magnet brushless |
| CN113541357B (en) * | 2021-07-26 | 2022-09-27 | 珠海格力电器股份有限公司 | Motor rotor sheath, rotor structure and motor comprising same |
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| CN202634111U (en) * | 2012-05-14 | 2012-12-26 | 浙江大学 | Subsection skewed-pole type permanent magnet synchronous motor rotor |
| CN202737714U (en) * | 2012-06-06 | 2013-02-13 | 春城控股集团有限公司 | Brushless permanent magnetism direct current motor with sectional offset high speed rotor magnetic pole |
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| CN204030764U (en) * | 2014-09-03 | 2014-12-17 | 安徽江淮汽车股份有限公司 | A kind of rotor punching and the oblique pole permanent magnet synchronous motor rotor of segmentation |
| CN205160231U (en) * | 2015-10-13 | 2016-04-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Segmentation is utmost point formula PMSM rotor to one side |
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| JP3872460B2 (en) * | 2003-08-19 | 2007-01-24 | 三菱電機株式会社 | Sintered ring magnet, method of manufacturing the same, and motor using the sintered ring magnet |
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|---|---|---|---|---|
| CN202634111U (en) * | 2012-05-14 | 2012-12-26 | 浙江大学 | Subsection skewed-pole type permanent magnet synchronous motor rotor |
| CN202737714U (en) * | 2012-06-06 | 2013-02-13 | 春城控股集团有限公司 | Brushless permanent magnetism direct current motor with sectional offset high speed rotor magnetic pole |
| CN104158318A (en) * | 2014-07-30 | 2014-11-19 | 合肥工业大学 | Method for reducing cogging torque of permanent magnet motor |
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