CN109412289A - A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux - Google Patents
A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux Download PDFInfo
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- CN109412289A CN109412289A CN201710322891.6A CN201710322891A CN109412289A CN 109412289 A CN109412289 A CN 109412289A CN 201710322891 A CN201710322891 A CN 201710322891A CN 109412289 A CN109412289 A CN 109412289A
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- magnetic pole
- magnetic
- permanent magnet
- side portion
- curved surface
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- 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
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- 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
A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux, including magnetic conduction backboard and multiple magnetic poles, the magnetic pole is in have certain thickness axial symmetry laminated structure, successively lie side by side is fixed on magnetic conduction backboard the length direction that multiple magnetic poles are limited along each two ends of freedom, the axis 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 in the width direction vertical with its length direction is substantially in the sinusoidal rule variation of first half cycle, the internal magnetic field of two adjacent magnetic poles is contrary, the internal magnetic field direction of the multiple magnetic pole is vertical with magnetic conduction backboard.Pole arrangement structure of the invention can generate 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
The present invention relates to motor fields, and in particular to a kind of permanent magnet motor magnetic pole arrangement architecture that can produce sinusoidal magnetic flux,
Motor field more particularly to magneto electromagnetic design suitable for electrical engineering.
Background technique
Currently, rotor field waveform caused by rotor structure used by most of magneto is in square,
In contain a large amount of higher hamonic wave.The higher hamonic wave in magnetic field can generate adverse effect to magneto performance, specifically include that (1)
High frequency iron loss is generated in electric machine iron core, reduces electric efficiency；(2) increase the back-emf harmonic content of motor, influence motor
Control precision；(3) motor electromagnetic torque is made to generate larger fluctuation；(4) higher hamonic wave disperses magnetic pole and magnetic field energy, weakens fundamental wave energy
Amount reduces magnet steel utilization rate.Therefore, the sine degree for improving rotor field is of great significance to magneto performance is improved.
In motor rotor construction design, there is document to propose the method optimized to magnetic pole to improve rotor field
Waveform.The mainly rotor structure optimization of the magneto 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 includes in adjustment
The magnetic pole angle of embedded magnet steel, number, the methods of the magnetic pole number of plies and change rotor silicon steel sheet shape.Such method is only capable of to spy
The motor of scale cun 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, since rotor silicon steel sheet is issuable full
And effect, air-gap field can generate distortion, can not reach identified sine degree when design.At the same time, for embedded
The magnetic field optimization of magneto will 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 type magnet steel magnetizes difficulty
Greatly, yield rate is low, and the magnet steel scale of construction needed is larger, will cause the raising of motor cost.For the magnetic pole row of PWM waveform segmentation
Column method, magnetic field optimization variable is more, and optimization difficulty is larger, and Optimal Parameters change with motor size, does not have equally general
Property.
Summary of the invention
In order to solve the above technical problems, changing the permanent magnet flux to be interlinked in each phase winding in sinusoidal form, mention
The counter potential waveform sine degree of high motor, improves the smoothness of electromagnetic torque.The present invention by the shape to surface-mount type magnet steel into
Row particular constraints propose a kind of rotor knot of novel surface-mounted permanent magnet machine that sinusoidal magnetic flux can be generated in armature winding
Structure.
Permanent magnet motor magnetic pole arrangement architecture of the invention, including magnetic conduction backboard and multiple magnetic poles, the magnetic pole are in have one
Determine the axial symmetry laminated structure of thickness, multiple magnetic poles along the length direction that each two ends of freedom limit successively fix by lie side by side
On magnetic conduction backboard, the axis of the magnetic pole is perpendicular to its length direction, two adjacent magnetic poles phase in the plane of magnetic conduction backboard
Mutually reversed 180 °, length of each magnetic pole in the width direction vertical with its length direction is substantially in the sine gauge of first half cycle
Rule variation, the internal magnetic field of two adjacent magnetic poles is contrary, the internal magnetic field direction of the multiple magnetic pole and magnetic conduction backboard
Vertically.
Further, each magnetic pole respectively 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 two for forming magnetic pole 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 outward.
Further, a side portion of the magnetic pole is with the first half cycle sinusoidal shape protruded outward
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 outward
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 have 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 are as follows:
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 are as follows:
h2=W2×sin(a·π/L1),
In formula, W1With W2Maximum distance of the respectively single magnetic pole to line between two ends of the magnetic pole；L1It is 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 h2Each point is between two ends of the magnetic pole at a distance from line respectively on curve.
Further, the bending direction of the side portion with the bell curved surface of smaller radian with have the bell curved surface of larger radian
Side portion bending direction it is identical.
Permanent magnet motor magnetic pole arrangement architecture proposed by the present invention can be realized it is following the utility model has the advantages that
(1) permanent magnet motor magnetic pole arrangement architecture proposed by the present invention can be generated in armature winding when motor works and be pressed
The magnetic flux of sinusoidal variations improves the steady of motor electromagnetic torque so that counter electromotive force of motor waveform has high sine degree
Property.
(2) permanent magnet shape constraining conditional parameter proposed by the present invention is less, is suitable for various motor sizes, has very strong
Versatility.
Detailed description of the invention
Fig. 1 is the plan view of the first embodiment of permanent magnet motor magnetic pole arrangement architecture of the invention；
Fig. 2 is the perspective view of the first embodiment of permanent magnet motor magnetic pole arrangement architecture of the invention；
Fig. 3 is the plan view of the second embodiment of permanent magnet motor magnetic pole arrangement architecture of the invention；
Fig. 4 is the perspective view of the second embodiment of permanent magnet motor magnetic pole arrangement architecture of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.But as known to those skilled in the art, the invention is not limited to attached drawings and following reality
Apply example.
First embodiment:
As shown in Figure 1, 2, in the first embodiment of permanent magnet motor magnetic pole arrangement architecture proposed by the present invention, the permanent magnetism
Motor pole arrangement architecture includes magnetic conduction backboard 1 and multiple magnetic poles, and the geomery of each magnetic pole is identical, has phase between adjacent pole
With setting relationship, Fig. 1, give the example of 4 magnetic poles in 2.
The magnetic pole is in have certain thickness axial symmetry laminated structure, respectively opposed with top surface, bottom surface and two
Side portion, two side portions are vertical with top and bottom, and the both ends of a side portion and the both ends of another side portion are distinguished
It is connected, forms two ends in tip-angled shape of magnetic pole.One side portion of the magnetic pole is with the first half protruded outward
The curved surface of cycle sinusoidal curve shape, another side portion are plane.
Below to the setting relationship between adjacent pole in the present embodiment by taking adjacent the first magnetic pole 2 and the second magnetic pole 3 as an example
It is illustrated.
Successively lie side by side is fixed on and leads the length direction L that first magnetic pole 2 and the second magnetic pole 3 are limited by two ends along it
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 direction W vertical with its length direction L
Length is substantially in the sinusoidal rule variation 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 the pole N, and bottom surface is the pole S, and the top surface of the second magnetic pole 3 is the pole S, and bottom surface is the pole N；First magnetic pole 2 with
The internal magnetic field direction of second magnetic pole 3 is vertical with magnetic conduction backboard 1.
Fig. 1,2 embodiment in, illustrate only four tactic examples of magnetic pole, those skilled in the art can manage
Solution, can multiple identical magnetic poles, magnetic pole be arranged side by side 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 as the arrangement mode between the 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 two adjacent magnetic poles is contrary, can be used for linear motor；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, that is, magnetic pole length direction L) inswept pole shoe
Boundary line, pole shoe boundary line are generally perpendicular to the direction of motion, and since 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 direction W of each magnetic pole be substantially in first half cycle just
The variation of string rule, then the line length of the magnetic pole section of inswept pole shoe boundary line changes at sinusoidal rule.
Second embodiment:
In another embodiment of the present invention, as shown in Figure 3,4, the permanent magnet motor magnetic pole arrangement architecture includes magnetic conduction back
Plate 11 and multiple magnetic poles, the geomery of each magnetic pole is identical, setting relationship having the same between adjacent pole, Fig. 3, only shows in 4
4 magnetic poles are gone out.
The shape that second embodiment is different from the first embodiment in magnetic pole is different.In a second embodiment, magnetic pole
In there is certain thickness axial symmetry laminated structure, respectively there are top surface, bottom surface and two opposed side portions, two side portions
Vertical with top and bottom, the both ends of a side portion are respectively connected with the both ends of another side portion, form the two of magnetic pole
A end 14 or 15 in tip-angled shape.One side portion of the magnetic pole is with the symmetrical of the larger radian protruded outward
Bell curved surface, another side portion are the symmetrical bell curved surface with smaller radian, the side with 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, be arranged the magnetic pole with its
Length on length direction L vertical width direction W is substantially in the sinusoidal rule variation of first half cycle.At this point, having larger arc
The height for spending the side portion of bell curved surface can be lower than the curved surface height with first half cycle sinusoidal shape of first embodiment,
" sinusoidal rule variation " is obtained with this.
Specifically, as shown in figure 3, the side of the bell curved surface for the larger radian that the magnetic pole side portion on magnetic conduction backboard 1 has
Bound function are as follows:
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 are as follows:
h2=W2×sin(a·π/L1),
In formula, W1With W2Maximum distance of the respectively single magnetic pole to the line between two ends of the magnetic pole；L1For list
Length between two ends of a magnetic pole；A is each point on curve and the magnetic pole left end end on the magnetic pole length direction
Distance；h1With h2Each point is at a distance from the line between two ends of the magnetic pole respectively on curve.
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, and the magnetic pole is arranged vertical with its length direction L
Length on width direction W is substantially in the sinusoidal rule variation of first half cycle.At this point, the side with the bell curved surface of larger radian
The height in portion can be higher than aforementioned two sides edge bending direction it is opposite when the side portion with the bell curved surface of larger radian height, with
This obtains " sinusoidal rule variation ".
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. a kind of permanent magnet motor magnetic pole arrangement architecture that can produce sinusoidal magnetic flux, including magnetic conduction backboard and multiple magnetic poles, feature
Be: the magnetic pole is in have certain thickness axial symmetry laminated structure, the length that multiple magnetic poles are limited along each two ends of freedom
Successively lie side by side is fixed on magnetic conduction backboard in degree direction, and the axis of the magnetic pole is perpendicular to its length direction, two adjacent magnetic
Pole is mutually opposing 180 ° in the plane of magnetic conduction backboard, length of each magnetic pole in the width direction vertical with its length direction
Substantially change in the sinusoidal rule of first half cycle, the internal magnetic field of two adjacent magnetic poles is contrary, the multiple magnetic pole
Internal magnetic field direction is vertical with magnetic conduction backboard.
2. permanent magnet motor magnetic pole arrangement architecture as described in claim 1, it is characterised in that: each magnetic pole respectively have top surface,
Bottom surface and two opposed side portions, two side portions are vertical with top and bottom, the both ends of side portion and another
The both ends of side portion are respectively connected with, and form two ends in tip-angled shape of magnetic pole.
3. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 2, it is characterised in that: a side portion of the magnetic pole is
Symmetrical bell curved surface with the radian protruded outward.
4. permanent magnet motor magnetic pole arrangement architecture as claimed in claim 2 or claim 3, it is characterised in that: a side of the magnetic pole
Portion is the curved surface with the first half cycle sinusoidal shape protruded outward, 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: a side of the magnetic pole
Portion is the symmetrical bell curved surface with the larger radian protruded outward, 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 having the bending direction of side portion of 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: the magnetic pole side portion on magnetic conduction backboard
The boundary function of the bell curved surface for the larger radian having are as follows:
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 are as follows:
h2=W2×sin(a·π/L1),
In formula, W1With W2Maximum distance 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 on curve at a distance from the magnetic pole left end end is on the magnetic pole length direction；h1
With h2Each point is between two ends of the magnetic pole at a distance from line respectively on curve.
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 as having the bending direction of side portion of the bell curved surface of larger radian.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322891.6A CN109412289A (en) | 2017-05-09 | 2017-05-09 | A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux |
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| CN201710322891.6A CN109412289A (en) | 2017-05-09 | 2017-05-09 | A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2331835A1 (en) * | 1998-05-08 | 1999-11-18 | Juha Pyrhonen | Permanent magnet synchronous machine |
| CN101429927A (en) * | 2007-11-07 | 2009-05-13 | 王光顺 | Permanent magnet direct-driving aerogenerator |
| CN101789677A (en) * | 2010-03-15 | 2010-07-28 | 哈尔滨工业大学 | Secondary structure of low-thrust waved sine wave permanent magnet liner synchronous motor |
| DE102012218498A1 (en) * | 2012-10-11 | 2014-04-17 | Siemens Aktiengesellschaft | Dynamoelectric machine with a multi-pole rotor with permanent magnets and their manufacture |
| CN204391921U (en) * | 2015-02-03 | 2015-06-10 | 吕周安 | A kind of energy-efficient circular magnetic steel |
| CN207166237U (en) * | 2017-05-09 | 2018-03-30 | 合肥硬核派科技有限公司 | A kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux |
-
2017
- 2017-05-09 CN CN201710322891.6A patent/CN109412289A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2331835A1 (en) * | 1998-05-08 | 1999-11-18 | Juha Pyrhonen | Permanent magnet synchronous machine |
| CN101429927A (en) * | 2007-11-07 | 2009-05-13 | 王光顺 | Permanent magnet direct-driving aerogenerator |
| CN101789677A (en) * | 2010-03-15 | 2010-07-28 | 哈尔滨工业大学 | Secondary structure of low-thrust waved sine wave permanent magnet liner synchronous motor |
| DE102012218498A1 (en) * | 2012-10-11 | 2014-04-17 | Siemens Aktiengesellschaft | Dynamoelectric machine with a multi-pole rotor with permanent magnets and their manufacture |
| CN204391921U (en) * | 2015-02-03 | 2015-06-10 | 吕周安 | A kind of energy-efficient circular magnetic steel |
| CN207166237U (en) * | 2017-05-09 | 2018-03-30 | 合肥硬核派科技有限公司 | A kind of permanent magnet motor magnetic pole arrangement architecture for producing sinusoidal magnetic flux |
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