CN207166237U - A kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux - Google Patents
A kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux Download PDFInfo
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- CN207166237U CN207166237U CN201720508740.5U CN201720508740U CN207166237U CN 207166237 U CN207166237 U CN 207166237U CN 201720508740 U CN201720508740 U CN 201720508740U CN 207166237 U CN207166237 U CN 207166237U
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- 229910000831 Steel Inorganic materials 0.000 description 6
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- 239000010959 steel Substances 0.000 description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
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Abstract
A kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux, including magnetic conduction backboard and multiple magnetic poles, the magnetic pole is in have certain thickness axial symmetry laminated structure, lie side by side is fixed on magnetic conduction backboard length direction of multiple magnetic poles along each two ends restrictions of freedom successively, the axle of the magnetic pole is perpendicular to its length direction, two adjacent magnetic poles are mutually opposing 180 ° in the plane of magnetic conduction backboard, length of each magnetic pole on the width vertical with its length direction substantially changes in the sinusoidal rule of first half cycle, the internal magnetic field of two adjacent magnetic poles is in opposite direction, the internal magnetic field direction of the multiple magnetic pole is vertical with magnetic conduction backboard.Pole arrangement structure of the present utility model can produce the magnetic flux of sinusoidal variations in armature winding, so that counter electromotive force of motor waveform has high sine degree, improve the stationarity of motor electromagnetic torque, and permanent magnet shape constraining conditional parameter is less, suitable for various motor sizes, there is very strong versatility.
Description
Technical field
It the utility model is related to machine field, and in particular to a kind of permanent magnet motor magnetic pole arrangement knot for producing sinusoidal magnetic flux
Structure, machine field more particularly to magneto electromagnetic design suitable for electrical engineering.
Background technology
At present, rotor field waveform caused by rotor structure is in square used by most of magneto, its
In contain substantial amounts of higher hamonic wave.The higher hamonic wave in magnetic field can produce harmful effect to magneto performance, mainly include：(1)
High frequency iron loss is produced in electric machine iron core, reduces electric efficiency；(2) increase the back-emf harmonic content of motor, influence motor
Control accuracy；(3) motor electromagnetic torque is made to produce larger fluctuation；(4) higher hamonic wave disperses magnetic pole and magnetic field energy, weakens fundamental wave energy
Amount, reduce magnet steel utilization rate.Therefore, the sine degree for improving rotor field is significant to improving magneto performance.
In motor rotor construction design, there is document to propose to optimize magnetic pole the method for design to improve rotor field
Waveform.The rotor structure optimization of the main magneto for including two kinds of rotor types：
(1) built-in permanent magnetic motor
For magnet steel built-in permanent magnetic motor, to improve rotor field sine degree, the method mainly used is included in adjustment
The methods of magnetic pole angle of embedded magnet steel, number, the magnetic pole number of plies and change rotor silicon steel sheet profile.Such method is only capable of to spy
The motor being sized is designed, if motor size parameter change, corresponding optimized variable also will accordingly change, therefore not have
There is versatility, the development cost of design of electrical motor can be improved.While motor operation, because rotor silicon steel sheet is issuable full
And effect, air-gap field can produce distortion, it is impossible to reach identified sine degree during design.At the same time, for embedded
The magnetic field optimization of magneto can increase the complexity of electric machine structure, cause the increase of motor difficulty of processing, improve motor processing
Cost.
(2) surface-mounted permanent magnet machine
For surface-mounted permanent magnet machine, to improve rotor field sine degree, the method mainly used at present includes using
Halbach array of magnetic dipoles uses the segmented array of magnetic dipoles for being similar to PWM waveform.Wherein, Halbach types magnet steel magnetizes difficulty
Greatly, yield rate is low, and the magnet steel scale of construction needed is larger, can cause the raising of motor cost.Arranged for the magnetic pole of PWM waveform segmentation
Row method, magnetic field optimization variable is more, and optimization difficulty is larger, and Optimal Parameters change with motor size, equally without general
Property.
Utility model content
In order to solve the above technical problems, the permanent magnet flux for making to be interlinked in each phase winding changes in sinusoidal form, carry
The counter potential waveform sine degree of high motor, improve the smoothness of electromagnetic torque.The utility model passes through to the outer of surface-mount type magnet steel
Shape carries out particular constraints, proposes a kind of turning for new surface-mounted permanent magnet machine that sinusoidal magnetic flux can be produced in armature winding
Minor structure.
Permanent magnet motor magnetic pole arrangement architecture of the present utility model, including magnetic conduction backboard and multiple magnetic poles, the magnetic pole be in
There is a certain thickness axial symmetry laminated structure, the length direction that multiple magnetic poles are limited along each two ends of freedom lie side by side successively
It is fixed on magnetic conduction backboard, the axle of the magnetic pole is perpendicular to its length direction, plane of adjacent two magnetic poles in magnetic conduction backboard
Upper mutually opposing 180 °, length of each magnetic pole on the width vertical with its length direction substantially in first half cycle just
String rule changes, and the internal magnetic field of adjacent two magnetic poles is in opposite direction, the internal magnetic field direction of the multiple magnetic pole and magnetic conduction
Backboard is vertical.
Further, each magnetic pole each has top surface, bottom surface and a two opposed side portions, two side portions with top
Face and plane perpendicular, the both ends of a side portion are respectively connected with the both ends of another side portion, and form magnetic pole two are in point
The end of horn shape.
Further, a side portion of the magnetic pole is the symmetrical bell curved surface with the radian protruded laterally.
Further, a side portion of the magnetic pole is with the first half cycle sinusoidal shape protruded laterally
Curved surface, another side portion are plane.
Further, a side portion of the magnetic pole is the symmetrical bell song with the larger radian protruded laterally
Face, another side portion are the symmetrical bell curved surface with smaller radian.
Further, the bending direction of the side portion with the bell curved surface of smaller radian with the bell curved surface of larger radian
Side portion bending direction it is opposite.
Further, the boundary function of the bell curved surface for the larger radian that the magnetic pole side portion on magnetic conduction backboard has is：
h1=W1×sin(a·π/L1),
The boundary function of the bell curved surface for the smaller radian that magnetic pole side portion on magnetic conduction backboard has is：
h2=W2×sin(a·π/L1),
In formula, W1With W2Ultimate range of the respectively single magnetic pole to line between two ends of the magnetic pole；L1To be single
Length between two ends of magnetic pole；A be on curve each point and the magnetic pole left end end on the magnetic pole length direction away from
From；h1With h2Respectively on curve between each point and two ends of the magnetic pole line distance.
Further, the bending direction of the side portion with the bell curved surface of smaller radian with the bell curved surface of larger radian
Side portion bending direction it is identical.
The utility model proposes permanent magnet motor magnetic pole arrangement architecture can realize following beneficial effect：
(1) the utility model proposes permanent magnet motor magnetic pole arrangement architecture can be produced when motor works in armature winding
The raw magnetic flux by sinusoidal variations so that counter electromotive force of motor waveform has high sine degree, improves motor electromagnetic torque
Stationarity.
(2) the utility model proposes permanent magnet shape constraining conditional parameter it is less, be suitable for various motor sizes, have
Very strong versatility.
Brief description of the drawings
Fig. 1 is the plan of the first embodiment of permanent magnet motor magnetic pole arrangement architecture of the present utility model；
Fig. 2 is the stereogram of the first embodiment of permanent magnet motor magnetic pole arrangement architecture of the present utility model；
Fig. 3 is the plan of the second embodiment of permanent magnet motor magnetic pole arrangement architecture of the present utility model；
Fig. 4 is the stereogram of the second embodiment of permanent magnet motor magnetic pole arrangement architecture of the present utility model.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is further described.But those skilled in the art know, the utility model is not limited to
Accompanying drawing and following examples.
First embodiment：
As shown in Figure 1, 2, the utility model proposes permanent magnet motor magnetic pole arrangement architecture first embodiment in, it is described
Permanent magnet motor magnetic pole arrangement architecture includes magnetic conduction backboard 1 and multiple magnetic poles, and the geomery of each magnetic pole is identical, has between adjacent pole
There is identical that relation is set, the example of 4 magnetic poles is given in Fig. 1,2.
The magnetic pole is each opposed with top surface, bottom surface and two in there is certain thickness axial symmetry laminated structure
Side portion, two side portions are distinguished with top surface and plane perpendicular, the both ends of a side portion with the both ends of another side portion
It is connected, form magnetic pole two are in the end of tip-angled shape.One side portion of the magnetic pole is with the first half protruded laterally
The curved surface of cycle sinusoidal curve shape, another side portion are plane.
Setting relation in below by taking adjacent the first magnetic pole 2 and the second magnetic pole 3 as an example to the present embodiment between adjacent pole
Illustrate.
Lie side by side is fixed on and led the length direction L that first magnetic pole 2 and the second magnetic pole 3 are limited along it by two ends successively
On magnetic backboard 1, i.e., from perpendicular to magnetic conduction carapace length direction (i.e. along direction W shown in Fig. 1), the first magnetic pole 2 and the second magnetic pole 3
Adjacent both ends portion 4,5 connect, direction W is perpendicular to length direction L, and the first adjacent magnetic pole 2 and the second magnetic pole 3 are in magnetic conduction backboard
Mutually opposing 180 ° in 1 plane, the first magnetic pole 2 and the second magnetic pole 3 are on the width W vertical with its length direction L
Length substantially changes in the sinusoidal rule of first half cycle；The internal magnetic field direction phase of the first adjacent magnetic pole 2 and the second magnetic pole 3
Instead, the top surface of the first magnetic pole 2 is N poles, and bottom surface is S poles, and the top surface of the second magnetic pole 3 is S poles, and bottom surface is N poles；First magnetic pole 2 with
The internal magnetic field direction of second magnetic pole 3 is vertical with magnetic conduction backboard 1.
In Fig. 1,2 embodiment, four tactic examples of magnetic pole are illustrate only, those skilled in the art can manage
Solution, can be arranged side by side multiple identical magnetic poles, magnetic pole in the outside splicing sequence straight line of two magnetic poles end to end shown in Fig. 1,2
Between arrangement mode it is identical with the arrangement mode between first, second magnetic pole 2,3, two adjacent magnetic poles are in magnetic conduction backboard 1
Plane on mutually opposing 180 °, the internal magnetic field of adjacent two magnetic poles is in opposite direction, can be used for linear electric motors；If with
In barrel-shaped motor, then magnetic pole encompasses barrel-shaped arrangement.
In the motor course of work, magnetic pole is along the direction of motion (direction of motion is the length direction L of magnetic pole) inswept pole shoe
Boundary line, pole shoe boundary line are generally perpendicular to the direction of motion, and because a side portion of magnetic pole is plane, another side portion is
Curved surface with first half cycle sinusoidal shape, thus the length on the width W of each magnetic pole substantially in first half cycle just
String rule changes, then the line length of the magnetic pole section of inswept pole shoe boundary line changes into sinusoidal rule.
Second embodiment：
In another embodiment of the present utility model, as shown in Figure 3,4, the permanent magnet motor magnetic pole arrangement architecture includes leading
Magnetic backboard 11 and multiple magnetic poles, the geomery of each magnetic pole is identical, between adjacent pole there is identical to set relation, in Fig. 3,4
It illustrate only 4 magnetic poles.
Second embodiment is that the shape of magnetic pole is different from first embodiment difference.In a second embodiment, magnetic pole
In there is certain thickness axial symmetry laminated structure, each with top surface, bottom surface and two opposed side portions, two side portions
It is respectively connected with top surface and plane perpendicular, the both ends of a side portion with the both ends of another side portion, forms the two of magnetic pole
The individual end 14 or 15 in tip-angled shape.One side portion of the magnetic pole is with the symmetrical of the larger radian protruded laterally
Bell curved surface, another side portion are the symmetrical bell curved surface with smaller radian, have the side of the bell curved surface of smaller radian
The bending direction of edge with the bell curved surface of larger radian side portion bending direction on the contrary, set the magnetic pole with its
Length on width W vertical length direction L substantially changes in the sinusoidal rule of first half cycle.Now, there is larger arc
The height of the curved surface with first half cycle sinusoidal shape of first embodiment can be less than by spending the height of the side portion of bell curved surface,
Obtained " sinusoidal rule change " with this.
Specifically, the as shown in figure 3, side of the bell curved surface for the larger radian that the magnetic pole side portion on magnetic conduction backboard 1 has
Bound function is：
h1=W1×sin(a·π/L1),
The boundary function of the bell curved surface for the smaller radian that magnetic pole side portion on magnetic conduction backboard has is：
h2=W2×sin(a·π/L1),
In formula, W1With W2Ultimate range of the respectively single magnetic pole to the line between two ends of the magnetic pole；L1For list
Length between two ends of individual magnetic pole；A is each point on curve and the magnetic pole left end end on the magnetic pole length direction
Distance；h1With h2The distance of line respectively on curve between each point and two ends of the magnetic pole.
It will be understood by those skilled in the art that the bending direction of the side portion with the bell curved surface of smaller radian can also be with
The bending direction of side portion with the bell curved surface of larger radian is identical, sets the magnetic pole vertical with its length direction L
Length on width W substantially changes in the sinusoidal rule of first half cycle.Now, there is the side of the bell curved surface of larger radian
The height in portion can have the height of the side portion of the bell curved surface of larger radian higher than foregoing two side portions bending direction when opposite, with
This is obtained " sinusoidal rule change ".
More than, embodiment of the present utility model is illustrated.But the utility model is not limited to above-mentioned implementation
Mode.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, done etc., should be included in
Within the scope of protection of the utility model.
Claims (8)
1. a kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux, including magnetic conduction backboard and multiple magnetic poles, its feature
It is：The magnetic pole is in have certain thickness axial symmetry laminated structure, the length that multiple magnetic poles limit along each two ends of freedom
Lie side by side is fixed on magnetic conduction backboard successively in degree direction, and the axle of the magnetic pole is perpendicular to its length direction, adjacent two magnetic
Pole is mutually opposing 180 ° in the plane of magnetic conduction backboard, length of each magnetic pole on the width vertical with its length direction
Change in the sinusoidal rule of first half cycle, the internal magnetic field of adjacent two magnetic poles is in opposite direction, the inside of the multiple magnetic pole
Magnetic direction is vertical with magnetic conduction backboard.
2. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 1, it is characterised in that：Each magnetic pole each have top surface,
Bottom surface and two opposed side portions, two side portions with top surface and plane perpendicular, the both ends of side portion and another
The both ends of side portion are respectively connected with, and form magnetic pole two are in the end of tip-angled shape.
3. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 2, it is characterised in that：One side portion of the magnetic pole is
Symmetrical bell curved surface with the radian protruded laterally.
4. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 2 or claim 3, it is characterised in that：One side of the magnetic pole
Portion is the curved surface with the first half cycle sinusoidal shape protruded laterally, and another side portion is plane.
5. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 2 or claim 3, it is characterised in that：One side of the magnetic pole
Portion is the symmetrical bell curved surface with the larger radian protruded laterally, and another side portion is with the symmetrical of smaller radian
Bell curved surface.
6. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 5, it is characterised in that：With the bell curved surface of smaller radian
The bending direction of side portion is opposite with the bending direction of the side portion with the bell curved surface of larger radian.
7. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 6, it is characterised in that：Magnetic pole side portion on magnetic conduction backboard
The boundary function of the bell curved surface for the larger radian having is：
h1=W1×sin(a·π/L1),
The boundary function of the bell curved surface for the smaller radian that magnetic pole side portion on magnetic conduction backboard has is：
h2=W2×sin(a·π/L1),
In formula, W1With W2Ultimate range of the respectively single magnetic pole to line between two ends of the magnetic pole；L1For single magnetic pole
Two ends between length；A is each point and distance of the magnetic pole left end end on the magnetic pole length direction on curve；h1
With h2Respectively on curve between each point and two ends of the magnetic pole line distance.
8. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 5, it is characterised in that：With the bell curved surface of smaller radian
The bending direction of side portion is identical with the bending direction of the side portion with the bell curved surface of larger radian.
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| CN109412289A (en) * | 2017-05-09 | 2019-03-01 | 铜陵硬核电机科技有限公司 | A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux |
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| CN109412289A (en) * | 2017-05-09 | 2019-03-01 | 铜陵硬核电机科技有限公司 | A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 244000 No.2, building C2, accelerator park for small and medium sized science and technology enterprises, 129 Cuihu fifth road, Tongling City, Anhui Province Patentee after: Tongling hardcore Technology Co.,Ltd. Address before: 230000 Hefei, Anhui economic and Technological Development Zone, east of Hean Road, Pearl Plaza, one of the Nordic street D01 area. Patentee before: HEFEI YINGHEPAI TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A permanent magnet motor magnetic pole arrangement structure that can generate sinusoidal magnetic flux Effective date of registration: 20220819 Granted publication date: 20180330 Pledgee: Tongling state credit financing Company limited by guarantee Pledgor: Tongling hardcore Technology Co.,Ltd. Registration number: Y2022980013076 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: 313009, No. 585-483, Shiyuan West Road, Dongqian Street, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou Hardcore Pai Technology Co.,Ltd. Country or region after: China Address before: 244000 No.2, building C2, accelerator park for small and medium sized science and technology enterprises, 129 Cuihu fifth road, Tongling City, Anhui Province Patentee before: Tongling hardcore Technology Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |