CN110034624A - Rotor, motor and mechanical structure - Google Patents
Rotor, motor and mechanical structure Download PDFInfo
- Publication number
- CN110034624A CN110034624A CN201910419758.1A CN201910419758A CN110034624A CN 110034624 A CN110034624 A CN 110034624A CN 201910419758 A CN201910419758 A CN 201910419758A CN 110034624 A CN110034624 A CN 110034624A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 209
- 239000010959 steel Substances 0.000 claims abstract description 209
- 230000005389 magnetism Effects 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 2
- 230000005347 demagnetization Effects 0.000 description 16
- 230000004907 flux Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005406 washing Methods 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
- H02K1/22—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]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of rotor, motor and mechanical structures.Rotor includes rotor body, the first permanent-magnet pole and the second permanent-magnet pole are provided on the rotor body, first permanent-magnet pole and second permanent-magnet pole are alternately arranged along the circumferential direction of the rotor body, first permanent-magnet pole includes the different magnet steel of at least two coercivitys, first permanent-magnet pole is arranged in W type, the the first low-coercivity magnet steel and the first high-coercive force magnet steel of the middle part setting series arrangement of first permanent-magnet pole, the second low-coercivity magnet steel is arranged in the two sides of first permanent-magnet pole.The adjustable magnetic range of the structure of the structure of the rotor of the application compared to the prior art in actual application is bigger, and adjustable magnetic multiple is effectively promoted.
Description
Technical field
The present invention relates to technical field of driving, in particular to a kind of rotor, motor and mechanical structure.
Background technique
Conventional permanent magnet motor provides magnetic flux by permanent magnet, but permanent magnet provides magnetic field and fixes, and motor internal magnetic field is difficult to
It adjusts, efficiency when magneto being made to be difficult to take into account high and low frequency.And in the case where power supply voltage is fixed, limit
The maximum running frequency of motor.
Currently, most magneto all has magnetic field and is difficult to the shortcomings that adjusting, it is straight by input to result in motor maximum speed
The limitation of the factors such as busbar voltage is flowed, motor low speed, high-speed cruising area efficiency are difficult to the problems such as taking into account, in motor operation course
In, low-coercivity magnet steel is influenced by high-coercive force magnet steel, fills that demagnetization current is larger, will increase low-coercivity magnet steel to fill demagnetization difficult
Degree reduces electric efficiency.
In addition, existing part magneto solves the problems, such as to magnetize, electric current is bigger than normal, but it is inclined to equally exist demagnetization current
There is risk of demagnetizing in small, normal operation.Shown in Figure 1, there are also some magnetoes, and it is less than normal to solve demagnetization current
The problem of, but such cascaded structure, magnet steel 1 are high-coercive force magnet steel, magnet steel 2 is low-coercivity magnet steel, and magnet steel 3 is high-coercive force
Magnet steel, for process of demagnetizing when applying larger current, to guarantee the stable magnetism of magnet steel 3, magnet steel 2 cannot apply too big demagnetization electricity
Stream, therefore the demagnetization of magnet steel 2 is limited, causes adjustable magnetic range less than normal.
Summary of the invention
The main purpose of the present invention is to provide a kind of rotor, motor and mechanical structures, to solve in the prior art
Magneto the small problem of adjustable magnetic range.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of rotor, including rotor sheet
Body is provided with the first permanent-magnet pole and the second permanent-magnet pole, first permanent-magnet pole and second permanent-magnet pole on the rotor body
Circumferential direction along the rotor body is alternately arranged, and first permanent-magnet pole includes the different magnet steel of at least two coercivitys, described
First permanent-magnet pole arranges that the first low-coercivity magnet steel and first of series arrangement is arranged in the middle part of first permanent-magnet pole in W type
The second low-coercivity magnet steel is arranged in the two sides of high-coercive force magnet steel, first permanent-magnet pole.
Further, the magnet steel of second permanent-magnet pole is the second high-coercive force magnet steel.
Further, the coercivity phase of the coercivity of the first high-coercive force magnet steel and the second high-coercive force magnet steel
It is same or different.
Further, the coercivity phase of the coercivity of the first low-coercivity magnet steel and the second low-coercivity magnet steel
It is same or different.
Further, the coercivity of the first low-coercivity magnet steel is higher than the coercivity of the second low-coercivity magnet steel
1~3 times, the remanent magnetism of the first low-coercivity magnet steel is 1~1.2 times of the second low-coercivity magnet steel remanent magnetism.
Further, second permanent-magnet pole is arranged in "-" type or V-type or W type, and about second permanent-magnet pole
Pole center line is symmetrical arranged.
Further, the coercivity of the first low-coercivity magnet steel is higher than the coercivity of the second low-coercivity magnet steel
When within 1.5 times, magnet steel size 1.15H1 > H2 > 1.05H1,1.4L2 > L1 > 1.3L2, and H1*L1 > H2*L2,2.5H3 > H2 >
2H3,2.5L3 > L2 > 2L3, wherein H1 is the width of the second low-coercivity magnet steel, and L1 is the second low-coercivity magnet steel
Length, H2 is the width of the first low-coercivity magnet steel, and L2 is the length of the first low-coercivity magnet steel, and H3 is described
The width of first high-coercive force magnet steel, L3 are the length of the first high-coercive force magnet steel.
Further, the coercivity of the first low-coercivity magnet steel is higher than the coercivity of the second low-coercivity magnet steel
When within 1.5~3 times, 1.05H1 > H2 > H1,1.4L2 > L1 > 1.1L2, and H1*L1 > H2*L2,4H3 > H2 > 2.5H3,3L3 > L2 >
2L3, wherein H1 is the width of the second low-coercivity magnet steel, and L1 is the length of the second low-coercivity magnet steel, and H2 is institute
The width of the first low-coercivity magnet steel is stated, L2 is the length of the first low-coercivity magnet steel, and H3 is first high-coercive force
The width of magnet steel, L3 are the length of the first high-coercive force magnet steel.
Further, the interpolar width of first permanent-magnet pole and second permanent-magnet pole is that the second low-coercivity magnet steel is wide
1.5~3 times of degree.
Further, the outer edge of the rotor body is provided with cutting portion, and setting is fluted at the cutting portion, described
Between first permanent-magnet pole and second permanent-magnet pole, the end of second permanent-magnet pole is provided between magnetic groove
Gap, the depth of the groove are H, and the bottom of the groove is H5 at a distance from the rotor body edge, and described second is high strong
The width of stupid power magnet steel is H4, the side and the side every magnetic gap that the second high-coercive force magnet steel extends along its length
The maximum spacing of wall is H6, and the angle of the first low-coercivity magnet steel and the pole center line of first permanent-magnet pole is a, institute
The angle for stating the interpolar center line of the first low-coercivity magnet steel and first permanent-magnet pole and second permanent-magnet pole is a1, described
The angle of the interpolar center line of the pole center line of first permanent-magnet pole and the first permanent-magnet pole and second permanent-magnet pole is θ, wherein
0.12a < a1 < 0.13a, a < 0.92 θ, 0.8H5 < H < H5, H4-H6 < 0.5H4.
Further, the interpolar of the pole center line of first permanent-magnet pole and the first permanent-magnet pole and second permanent-magnet pole
The angle of center line is θ, and the side of first permanent-magnet pole is provided with every bore, and the side every bore and described first is forever
The minimum angle of the pole center line of magnetic pole is θ 1, the side every bore and the pole center line of first permanent-magnet pole
Maximum angle is θ 2, the line at the center of the second low-coercivity magnet steel and first end point and the rotor body and described the
The angle of the pole center line of one permanent-magnet pole is θ 3, wherein 0.55 θ < θ 1 < 0.6 θ, θ 3- θ 2 < θ 2- θ 1 < 0.15 θ, 0.7 θ < θ 3 <
0.75θ。
Further, the angle between the first high-coercive force magnet steel and the pole center line of first permanent-magnet pole is
θ 4, the angle between the first low-coercivity magnet steel and the pole center line of first permanent-magnet pole are θ 6, and described second is low
Angle between coercivity magnet steel and the pole center line of first permanent-magnet pole is θ 5, wherein 2.5 6 < θ of θ 4 < 1.05 θ, 1.12
θ4<θ5<1.16θ4。
Further, when second permanent-magnet pole is arranged in W type, the pole center line and first of first permanent-magnet pole is forever
The angle of magnetic pole and the interpolar center line of second permanent-magnet pole is θ, intermediate magnet steel and second permanent-magnet pole of the W type
Angle between pole center line is θ 9, between the edge magnet steel of the W type and the pole center line of second permanent-magnet pole
Angle is θ 8, is provided between the end and the rotor body of second permanent-magnet pole every magnetic gap, described to lean on every magnetic gap
The line at the center of the endpoint and rotor body of the pole center line of nearly second permanent-magnet pole and second permanent-magnet pole
The angle of pole center line be θ 7, wherein 0.64 θ < θ 9 < 0.7 θ, 0.9 9 < θ of θ 7 < 1.2 θ 9,0.85 θ < θ, 8 < 0.9 θ.
Further, the first high-coercive force magnet steel is arranged in the first low-coercivity magnet steel close to the rotor sheet
The one end at body center, and the direction of the pole center line towards center and first permanent-magnet pole close to the rotor body is prolonged
It stretches.
Further, the rotor further includes baffle, and the rotor body includes that main body is separated with the main body
It is provided with recessed portion in separation unit, the separation unit and the baffle one of both, is provided with and the recess on the two is another
The compatible lug boss in portion, the baffle and the main body are fixed together by fastener.
Further, the rotor body is made using silicon steel plate stacking or amorphous alloy material.
According to another aspect of the present invention, a kind of motor, including rotor are provided, the rotor is above-mentioned
Rotor.
In accordance with a further aspect of the present invention, a kind of mechanical structure, including motor are provided, the motor is above-mentioned electricity
Machine.
It applies the technical scheme of the present invention, using part the first low-coercivity magnet steel of series connection and the first high coercive in the application
The structure of power magnet steel, guarantee the first low-coercivity magnet steel anti-demagnetization capability promoted, make its during becoming magnetic flux its not by
The influence of demagnetization current, remanent magnetism is constant, therefore when the second low-coercivity magnet steel plays adjustable magnetic during becoming magnetic flux, second is low
The variation of coercivity magnet steel magnetic direction, the first low-coercivity magnet steel magnetism is constant, does not play the role of adjustable magnetic.Therefore the application
The adjustable magnetic range of the structure of the structure of rotor compared to the prior art in actual application is bigger, and adjustable magnetic multiple obtains
Effectively promoted.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the main view of existing rotor；
Fig. 2 diagrammatically illustrates the main view of the first embodiment of rotor of the invention；
Fig. 3 diagrammatically illustrates the first main view of the second embodiment of rotor of the invention；
Fig. 4 diagrammatically illustrates the second main view of the second embodiment of rotor of the invention；
Fig. 5 diagrammatically illustrates the main view of the rotor body in the 3rd embodiment of rotor of the invention；
Fig. 6 diagrammatically illustrates the main view of the baffle in the 3rd embodiment of rotor of the invention；
Fig. 7 diagrammatically illustrates the A-A cross-sectional view in Fig. 6；
Fig. 8 diagrammatically illustrate magnet steel 2,3 under different electric currents in Fig. 1 and the first low-coercivity magnet steel in the application and
The remanent magnetism comparing result figure of second low-coercivity magnet steel.
Wherein, the above drawings include the following reference numerals:
10, rotor body；11, the first permanent-magnet pole；111, the first low-coercivity magnet steel；112, the second low-coercivity magnet steel；
113, the first high-coercive force magnet steel；12, the second permanent-magnet pole；121, the second high-coercive force magnet steel；13, cutting portion；14, groove；15,
Every bore；16, every magnetic gap；17, main body；18, separation unit；181, recessed portion；20, baffle；21, lug boss.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
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.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes (be rotated by 90 ° or in other orientation, and
Respective explanations are made to the opposite description in space used herein above.
Referring to fig. 2 to shown in Fig. 7, according to an embodiment of the invention, providing a kind of motor, the motor in the present embodiment is outstanding
It refers to variable flux motor.
However, the adjustable magnetic range of existing variable flux motor is smaller, for this purpose, to the rotor of motor in the application
Structure is improved.
Shown in Figure 1, in the first embodiment of the present invention, rotor includes rotor body 10, the rotor body
The first permanent-magnet pole 11 and the second permanent-magnet pole 12 are provided on 10, wherein the first permanent-magnet pole 11 and the second permanent-magnet pole 12 are along rotor sheet
The circumferential direction of body 10 is alternately arranged, and the first permanent-magnet pole 11 includes the different magnet steel of at least two coercivitys, specifically, the first permanent magnetism
Pole 11 is arranged in W type, and the pole center line about the first permanent-magnet pole 11 is arranged symmetrically.String is arranged in the middle part of first permanent-magnet pole 11
The two sides setting second of the first low-coercivity magnet steel 111 and the first high-coercive force magnet steel 113 of townhouse cloth, the first permanent-magnet pole 11 is low
Coercivity magnet steel 112.It should be noted that the first high-coercive force magnet steel 113 and the first low-coercivity magnet steel in the present embodiment
111 series arrangements are meant that the magnetic line of force flows to the arrangement of the first high-coercive force magnet steel 113 from the first low-coercivity magnet steel 111
Mode, the i.e. equivalent circuit diagram of motor are the first high-coercive force magnet steel 113 and the concatenated arrangement side of the first low-coercivity magnet steel 111
Formula.
For rotor in Fig. 1, the structure in Fig. 1 is increased by increasing extremely lower intermediate 3 thickness of magnet steel of adjustable magnetic
Big adjustable magnetic range, but the influence due to the increase of 3 thickness of magnet steel to the anti-demagnetization capability of intermediate magnet steel 3 is limited, and is being demagnetized
When electric current increase is descended to a certain extent, in-between magnet steel 3 also will appear demagnetization, and the not up to reversed saturation of magnet steel 2 at this time, influence
Reversed adjustable magnetic range.It is shown in Figure 2, using part the first low-coercivity magnet steel 111 of series connection and the first high coercive in the application
The structure of power magnet steel 113, guarantee the first low-coercivity magnet steel 111 anti-demagnetization capability promoted, make its during becoming magnetic flux its
It is not influenced by demagnetization current, remanent magnetism is constant, therefore the second low-coercivity magnet steel 112 plays adjustable magnetic during becoming magnetic flux
When, the variation of 112 magnetic direction of the second low-coercivity magnet steel, the first low-coercivity magnet steel 111 is magnetic constant, does not play the work of adjustable magnetic
With.
As shown in figure 8, under different electric currents in Fig. 1 magnet steel 2,3 and the application in the first low-coercivity magnet steel 111 and
From the point of view of the remanent magnetism comparing result of second low-coercivity magnet steel 112, b1 indicates that the second low-coercivity magnet steel 112, b2 indicate the in figure
One low-coercivity magnet steel 111, a1 indicate magnet steel 2, and a2 indicates magnet steel 3, and during applying demagnetization current, the motor of the application turns
Son can be when the second low-coercivity magnet steel 112 reaches close under reversed saturation state, 111 remanent magnetism base of the first low-coercivity magnet steel
This is constant, and the structure of Fig. 1 is when magnet steel 1 is just reversed, and 2 remanent magnetism of magnet steel is declined, and such as continues growing demagnetization current,
Magnet steel 2 is in abnormal condition, therefore the structure of the rotor of the application is in actual application compared to the structure in Fig. 1
Adjustable magnetic range it is bigger, adjustable magnetic multiple is effectively promoted.
The magnet steel of the second permanent-magnet pole 12 in the present embodiment is the second high-coercive force magnet steel 121, and when actual design, second forever
Magnetic pole 12 is symmetrical arranged, Ke Yizeng in "-" type or V-type or W type arrangement about the pole center line of the second permanent-magnet pole 12
Add the useful flux area of adjustable magnetic pole magnet steel, convenient for reducing the electric current that magnetizes of motor, increases the demagnetization current of motor.
When actual design, the coercive of the first high-coercive force magnet steel 113 and the second high-coercive force magnet steel 121 in the present embodiment
Power may be the same or different.
Similarly, the coercivity of the first low-coercivity magnet steel 111 in the present embodiment and the second low-coercivity magnet steel 112 can
With identical, can also be different.For the first high-coercive force magnet steel 113 and the second high-coercive force magnet steel 121, this implementation
The first low-coercivity magnet steel 111 and the second low-coercivity magnet steel 112 in example is still relatively low.By the first low coercive in the application
The coercivity of power magnet steel 111 is set as 100KA/m or so, then corresponding first high-coercive force magnet steel 113 and the second high-coercive force
The coercivity of magnet steel 121 is 900KA/m to 1000KA/m or so, practical to be designed according to the specific requirements of motor.
In a kind of preferred embodiment of the invention, the first low-coercivity magnet steel 111 and the second low-coercivity magnet steel 112
Coercivity it is different, specifically, coercive of the coercivity of the first low-coercivity magnet steel 111 than the second low-coercivity magnet steel 112
Power is 1~3 times high, and the remanent magnetism of the first low-coercivity magnet steel 111 is 1~1.2 times of 112 remanent magnetism of the second low-coercivity magnet steel.
Specifically, the coercivity when the first low-coercivity magnet steel 111 is higher than 112 coercivity of the second low-coercivity magnet steel
When within 1.5 times, each magnet steel meets the following conditions: 1.15H1 > H2 > 1.05H1；1.4L2>L1>1.3L2；And H1*L1 > H2*L2；
2.5H3 > H2 > 2H3,2.5L3 > L2 > 2L3, wherein H1 is the width of the second low-coercivity magnet steel 112, and L1 is the second low-coercivity
The length of magnet steel 112, H2 are the width of the first low-coercivity magnet steel 111, and L2 is the length of the first low-coercivity magnet steel 111, H3
It is the width of the first high-coercive force magnet steel 113, L3 is the length of the first high-coercive force magnet steel 113.It can be known according to experimental verification
Road can effectively improve demagnetization current under these conditions, reduce the electric current that magnetizes, improve rotor fills demagnetization problem.
When 1.5~3 times higher than 112 coercivity of the second low-coercivity magnet steel of the coercivity of the first low-coercivity magnet steel 111 with
When interior, 1.05H1 > H2 > H1；1.4L2>L1>1.1L2；And H1*L1 > H2*L2,4H3 > H2 > 2.5H3,3L3 > L2 > 2L3, wherein
H1 is the width of the second low-coercivity magnet steel 112, and L1 is the length of the second low-coercivity magnet steel 112, and H2 is the first low-coercivity
The width of magnet steel 111, L2 are the length of the first low-coercivity magnet steel 111, and H3 is the width of the first high-coercive force magnet steel 113, L3
It is the length of the first high-coercive force magnet steel 113.Under these conditions, it equally can effectively improve demagnetization current 15%, reduction is filled
Magnetoelectricity stream 10%, improve rotor fills demagnetization problem.
Preferably, the interpolar width of the first permanent-magnet pole 11 and the second permanent-magnet pole 12 is 112 width of the second low-coercivity magnet steel
1.5~3 times, can effectively promote the adjustable magnetic range of rotor.
When actual design, the first high-coercive force magnet steel 113 setting in the present embodiment is leaned in the first low-coercivity magnet steel 111
The one end at nearly 10 center of rotor body, and towards the pole center line at center and the first permanent-magnet pole 11 close to rotor body 10
Direction extends, so that the middle part of entire first permanent-magnet pole 11 is in quadrangle, certainly, and in other embodiments of the invention, first
High-coercive force magnet steel 113 can also be arranged along the direction of the pole center line perpendicular to the first permanent-magnet pole 11, as long as in this hair
Other modes of texturing under bright design, it is within the scope of the present invention.
As shown in figure 3 and figure 4, second embodiment according to the present invention provides a kind of novel rotor, this reality to ginseng
The structure for applying the rotor in the structure and first embodiment of the rotor in example is essentially identical, the difference is that this reality
The outer edge for applying the rotor body 10 in example is provided with cutting portion 13, fluted 14 is arranged at the cutting portion 13, the groove 14
Between the first permanent-magnet pole 11 and the second permanent-magnet pole 12, the end of the second permanent-magnet pole 12 is provided with every magnetic gap 16, groove 14
Depth is H, and the bottom of groove 14 is H5 at a distance from 10 edge of rotor body, and the width of the second high-coercive force magnet steel 121 is H4,
The maximum spacing of side that second high-coercive force magnet steel 121 extends along its length and the side wall every magnetic gap 16 is H6, first
The angle of low-coercivity magnet steel 111 and the pole center line of the first permanent-magnet pole 11 is a, the first low-coercivity magnet steel 111 and first
The angle of the interpolar center line of permanent-magnet pole 11 and the second permanent-magnet pole 12 is a1, and the pole center line and first of the first permanent-magnet pole 11 is forever
The angle of magnetic pole 11 and the interpolar center line of the second permanent-magnet pole 12 is θ.
After interpolar groove 14 is added and designs, 14 structure of groove dredges high-coercive force magnet steel to the magnetic line of force of stator, reduces
Its influence to adjustable magnetic magnet steel (i.e. the second low-coercivity magnet steel 112) in magnetic pole is become, therefore adjustable magnetic magnet steel is to low strong under homopolarity
Stupid power magnet steel (i.e. the first low-coercivity magnet steel 111) short circuit effect increases, and reduces complete machine magnetic linkage at this time, increases adjustable magnetic ability, shadow
Ringing rule is that its a1 is bigger, and H5 subtracts that H is smaller, and adjustable magnetic range is bigger.The size is affected to motor torque ripple simultaneously, and a1 is got over
Small, H5 subtracts that H is bigger, and torque pulsation is smaller, therefore the structure has an optimal size.
Specifically, in the pole center line of the first permanent-magnet pole 11 and the interpolar of the first permanent-magnet pole 11 and the second permanent-magnet pole 12
The angle of heart line is θ, and the side of the first permanent-magnet pole 11 is provided with every bore 15, is somebody's turn to do the side every bore 15 and the first permanent-magnet pole 11
Pole center line minimum angle be θ 1, every the maximum angle of the pole center line of the side and the first permanent-magnet pole 11 of bore 15
For θ 2, (first end point here refers to leaning on for the second low-coercivity magnet steel 112 to the second low-coercivity magnet steel 112 with first end point
The outer edge of nearly rotor body 10 and close to an endpoint of the pole center line of the first permanent-magnet pole 11) in rotor body 10
The angle of the line of the heart and the pole center line of the first permanent-magnet pole 11 is θ 3, the first high-coercive force magnet steel 113 and the first permanent-magnet pole
Angle between 11 pole center line is θ 4, the pole center line of the first low-coercivity magnet steel 111 and the first permanent-magnet pole 11 it
Between angle be θ 6, the angle between the second low-coercivity magnet steel 112 and the pole center line of the first permanent-magnet pole 11 is θ 5,
In, when the second permanent-magnet pole 12 is arranged in W type, the pole center line of the first permanent-magnet pole 11 and the first permanent-magnet pole 11 and the second permanent-magnet pole
The angle of 12 interpolar center line is θ, and the angle between the intermediate magnet steel of W type and the pole center line of the second permanent-magnet pole 12 is θ
Angle between the edge magnet steel of 9, W types and the pole center line of the second permanent-magnet pole 12 is θ 8, the end of the second permanent-magnet pole 12 with
Be provided between rotor body 10 every magnetic gap 16, every magnetic gap 16 close to the pole center line of the second permanent-magnet pole 12 endpoint with
The angle of the line at the center of rotor body 10 and the pole center line of the second permanent-magnet pole 12 is θ 7, it is preferable that when 0.12a < a1 <
0.13a, a < 0.92 θ, 0.8H5 < H < H5, H4-H6 < 0.5H4；0.55 θ < θ 1 < 0.6 θ, θ 3- θ 2 < θ 2- θ 1 < 0.15 θ, 0.7 θ < θ 3 <
0.75θ；When 0.64 θ < θ 9 < 0.7 θ, 0.9 9 < θ of θ 7 < 1.2 θ 9,0.85 θ < 8 < 0.9 θ of θ, motor is in normal magnetic flux chain under this size
Efficiency is optimal under state or minimum magnetic linkage state, adjustable magnetic better effect.
Table 1 is obtained according to experiment, table 1 is the rotor adjustable magnetic speed comparison of the rotor and Fig. 1 in the present embodiment
It is as follows:
| Scheme | Normal magnetic linkage | Reversed magnetic linkage | Adjustable magnetic multiple (forwards/reverse) |
| The scheme of Fig. 1 | 559.4mWb | 430.2mWb | 1.3 |
| The scheme of the application | 553.4mWb | 369.8mWb | 1.5 |
Adjustable magnetic range is set to promote 15% from the structure of the rotor in terms of result in the application.
Referring to shown in Fig. 5 to Fig. 7, third embodiment according to the present invention provides a kind of rotor, in the present embodiment
Rotor structure and second embodiment in rotor structure it is essentially identical, the difference is that in the present embodiment
Rotor rotor body 10 in order to formed installation the first permanent-magnet pole 11 magnet steel magnetic slot, rotor body 10 is separated
For two structures, and the rotor body 10 separated is fixed together by correspondence by baffle 20, specifically, rotor body
10 include the separation unit 18 isolated with main body 17 of main body 17, is provided with recessed portion 181 in 20 one of both of separation unit 18 and baffle,
It is provided with lug boss 21 compatible with recessed portion 181 on the two is another, when actual assembled, baffle 20 and main body 17 pass through fastening
Part is fixed together, and then main body 17 and separation unit 18 are fixed on baffle 20, and structure is simple, reliable and stable.It is preferred that
Ground, the fastener in the present embodiment is the structures such as fastening screw, pin or rivet, as long as its under design of the invention
His mode of texturing, it is within the scope of the present invention.
Preferably, the rotor body 10 in the present embodiment can be made using silicon steel plate stacking, can also be by non-
Peritectic alloy material is made, as long as other modes of texturing under design of the invention, in protection scope of the present invention
Within.
According to another aspect of the present invention, a kind of mechanical structure is provided, the mechanical structure especially compressor, washing machine
Product is run etc. suitable wideband.Mechanical structure includes the motor in above-described embodiment.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: the application
Motor to realize adjustable magnetic, and adjustable magnetic times SerComm, can apply operating condition frequency is wide, in the products such as more, such as compressor electric motor is washed
Clothing electromechanics machine etc., and the motor is suitable for the motor of various slot numbers cooperation
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of rotor, which is characterized in that including rotor body (10), be provided with first forever on the rotor body (10)
Magnetic pole (11) and the second permanent-magnet pole (12), first permanent-magnet pole (11) and second permanent-magnet pole (12) are along the rotor body
(10) circumferential direction is alternately arranged, and first permanent-magnet pole (11) includes the different magnet steel of at least two coercivitys, and described first forever
Magnetic pole (11) arranges that the first low-coercivity magnet steel (111) of series arrangement is arranged in the middle part of first permanent-magnet pole (11) in W type
The second low-coercivity magnet steel (112) is set with the two sides of the first high-coercive force magnet steel (113), first permanent-magnet pole (11).
2. rotor according to claim 1, which is characterized in that the magnet steel of second permanent-magnet pole (12) is second high
Coercivity magnet steel (121).
3. rotor according to claim 2, which is characterized in that the coercive of the first high-coercive force magnet steel (113)
Power and the coercivity of the second high-coercive force magnet steel (121) are identical or different.
4. rotor according to claim 1, which is characterized in that the coercive of the first low-coercivity magnet steel (111)
Power and the coercivity of the second low-coercivity magnet steel (112) are identical or different.
5. rotor according to claim 1, which is characterized in that the coercive of the first low-coercivity magnet steel (111)
Power is 1~3 times higher than the coercivity of the second low-coercivity magnet steel (112), the remanent magnetism of the first low-coercivity magnet steel (111)
It is 1~1.2 times of the second low-coercivity magnet steel (112) remanent magnetism.
6. rotor according to claim 1, which is characterized in that second permanent-magnet pole (12) is in "-" type or V-type
Or W type arrangement, and be symmetrical arranged about the pole center line of second permanent-magnet pole (12).
7. rotor according to claim 5, which is characterized in that the coercive of the first low-coercivity magnet steel (111)
When within power is 1.5 times higher than the coercivity of the second low-coercivity magnet steel (112), magnet steel size 1.15H1 > H2 > 1.05H1,
1.4L2 > L1 > 1.3L2, and H1*L1 > H2*L2,2.5H3 > H2 > 2H3,2.5L3 > L2 > 2L3, wherein H1 is described second low strong
The width of stupid power magnet steel (112), L1 are the length of the second low-coercivity magnet steel (112), and H2 is first low-coercivity
The width of magnet steel (111), L2 are the length of the first low-coercivity magnet steel (111), and H3 is the first high-coercive force magnet steel
(113) width, L3 are the length of the first high-coercive force magnet steel (113).
8. rotor according to claim 5, which is characterized in that the coercive of the first low-coercivity magnet steel (111)
When within power is 1.5~3 times higher than the coercivity of the second low-coercivity magnet steel (112), 1.05H1 > H2 > H1,1.4L2 > L1 >
1.1L2, and H1*L1 > H2*L2,4H3 > H2 > 2.5H3,3L3 > L2 > 2L3, wherein H1 is the second low-coercivity magnet steel
(112) width, L1 are the length of the second low-coercivity magnet steel (112), and H2 is the first low-coercivity magnet steel (111)
Width, L2 is the length of the first low-coercivity magnet steel (111), and H3 is the width of the first high-coercive force magnet steel (113)
Degree, L3 is the length of the first high-coercive force magnet steel (113).
9. rotor according to claim 1, which is characterized in that first permanent-magnet pole (11) and second permanent magnetism
The interpolar width of pole (12) is 1.5~3 times of second low-coercivity magnet steel (112) width.
10. rotor according to claim 2, which is characterized in that the outer edge of the rotor body (10) is provided with
Cutting portion (13), is arranged fluted (14) at the cutting portion (13), and the groove (14) is located at first permanent-magnet pole (11)
Between second permanent-magnet pole (12), the end of second permanent-magnet pole (12) is provided with every magnetic gap (16), the groove
(14) depth is H, and the bottom of the groove (14) is H5 at a distance from the rotor body (10) edge, and described second is high strong
The width of stupid power magnet steel (121) is H4, side that the second high-coercive force magnet steel (121) extends along its length and it is described every
The maximum spacing of the side wall of magnetic gap (16) is H6, the first low-coercivity magnet steel (111) and first permanent-magnet pole (11)
The angle of pole center line be a, the first low-coercivity magnet steel (111) and first permanent-magnet pole (11) and described second
The angle of the interpolar center line of permanent-magnet pole (12) is a1, the pole center line and the first permanent-magnet pole of first permanent-magnet pole (11)
(11) and the angle of the interpolar center line of second permanent-magnet pole (12) is θ, wherein the θ of 0.12a < a1 < 0.13a, a < 0.92,
0.8H5 < H < H5, H4-H6 < 0.5H4.
11. rotor according to claim 1, which is characterized in that the pole center line of first permanent-magnet pole (11)
Angle with the interpolar center line of the first permanent-magnet pole (11) and second permanent-magnet pole (12) is θ, first permanent-magnet pole (11)
Side be provided with every bore (15), the pole center line of the side every bore (15) and first permanent-magnet pole (11)
Minimum angle is θ 1, and the side every bore (15) and the maximum angle of the pole center line of first permanent-magnet pole (11) are
θ 2, the line at the center of the second low-coercivity magnet steel (112) and first end point and the rotor body (10) and described the
The angle of the pole center line of one permanent-magnet pole (11) is θ 3, wherein 0.55 θ < θ 1 < 0.6 θ, θ 3- θ 2 < θ 2- θ 1 < 0.15 θ, 0.7 θ <
θ3<0.75θ。
12. rotor according to claim 1, which is characterized in that the first high-coercive force magnet steel (113) with it is described
Angle between the pole center line of first permanent-magnet pole (11) is θ 4, the first low-coercivity magnet steel (111) and described first
Angle between the pole center line of permanent-magnet pole (11) is θ 6, the second low-coercivity magnet steel (112) and first permanent magnetism
Angle between the pole center line of pole (11) is θ 5, wherein 5 < 1.16 θ 4 of 2.5 6 < θ of θ 4 < 1.05 θ, 1.12 4 < θ of θ.
13. rotor according to claim 1, which is characterized in that when second permanent-magnet pole (12) is arranged in W type,
The pole center line of first permanent-magnet pole (11) and the interpolar center of the first permanent-magnet pole (11) and second permanent-magnet pole (12)
The angle of line is θ, and the angle between the intermediate magnet steel of the W type and the pole center line of second permanent-magnet pole (12) is θ 9,
Angle between the edge magnet steel of the W type and the pole center line of second permanent-magnet pole (12) is θ 8, second permanent magnetism
It is provided between the end and the rotor body (10) of pole (12) every magnetic gap (16), it is described close described every magnetic gap (16)
The line and second permanent magnetism at the center of the endpoint and rotor body (10) of the pole center line of the second permanent-magnet pole (12)
The angle of the pole center line of pole (12) is θ 7, wherein 0.64 θ < θ 9 < 0.7 θ, 0.9 9 < θ of θ 7 < 1.2 θ 9,0.85 θ < θ, 8 < 0.9 θ.
14. rotor according to claim 1, which is characterized in that the first high-coercive force magnet steel (113) setting exists
The one end at the close rotor body (10) center of the first low-coercivity magnet steel (111), and towards close to the rotor sheet
The direction of the pole center line of the center of body (10) and first permanent-magnet pole (11) extends.
15. rotor according to claim 1, which is characterized in that the rotor further includes baffle (20), described
Rotor body (10) includes the separation unit (18) that main body (17) is separated with the main body (17), the separation unit (18) and the gear
Recessed portion (181) are provided in plate (20) one of both, are provided on the two is another compatible convex with the recessed portion (181)
It rises portion (21), the baffle (20) and the main body (17) are fixed together by fastener.
16. according to claim 1 to rotor described in any one of 15, which is characterized in that the rotor body (10) is adopted
It is made with silicon steel plate stacking or amorphous alloy material.
17. a kind of motor, including rotor, which is characterized in that the rotor is any one of claims 1 to 16 institute
The rotor stated.
18. a kind of mechanical structure, including motor, which is characterized in that the motor is motor described in claim 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910419758.1A CN110034624A (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910419758.1A CN110034624A (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110034624A true CN110034624A (en) | 2019-07-19 |
Family
ID=67242773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910419758.1A Pending CN110034624A (en) | 2019-05-20 | 2019-05-20 | Rotor, motor and mechanical structure |
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| CN (1) | CN110034624A (en) |
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| CN109067046A (en) * | 2018-11-01 | 2018-12-21 | 珠海格力电器股份有限公司 | rotor and permanent magnet motor |
| CN109194078A (en) * | 2018-09-21 | 2019-01-11 | 东南大学 | A kind of bilayer permanent magnetism composite magnetic circuit memory electrical machine |
| JP2019068577A (en) * | 2017-09-29 | 2019-04-25 | 日産自動車株式会社 | Variable magnetic force motor |
| CN209709785U (en) * | 2019-05-20 | 2019-11-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor and mechanical structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217170A (en) * | 2008-11-19 | 2011-10-12 | 株式会社东芝 | Permanent magnet type rotating electric machine |
| CN107925282A (en) * | 2015-07-31 | 2018-04-17 | 日产自动车株式会社 | Permasyn morot |
| JP2019068577A (en) * | 2017-09-29 | 2019-04-25 | 日産自動車株式会社 | Variable magnetic force motor |
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