CN108880028A - 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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- CN108880028A CN108880028A CN201710322889.9A CN201710322889A CN108880028A CN 108880028 A CN108880028 A CN 108880028A CN 201710322889 A CN201710322889 A CN 201710322889A CN 108880028 A CN108880028 A CN 108880028A
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- magnetic pole
- conduction backboard
- magnetic conduction
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- 230000004907 flux Effects 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction 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
- H02K1/278—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)
- Iron Core Of Rotating Electric Machines (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 laminated structure, with top surface, bottom surface and two mutually opposing 180 ° of opposed side portions, two side portions are vertical with top and bottom, along the length direction of magnetic conduction backboard, successively lie side by side is fixed on magnetic conduction backboard multiple magnetic poles, respective two of multiple magnetic poles are parallel to each other in the line of the end of tip-angled shape, and angle is formed with the length direction of magnetic conduction backboard, length of each magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard 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.Permanent magnet motor magnetic pole arrangement architecture of the invention generates the magnetic flux of sinusoidal variations in armature winding, so that counter electromotive force of motor waveform is had high sine degree, improves the stationarity of electromagnetic torque.
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, mainly include：(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 magnetic pole row of novel surface-mounted permanent magnet machine that sinusoidal magnetic flux can be generated in armature winding
Array structure.
A kind of permanent magnet motor magnetic pole arrangement architecture can produce sinusoidal magnetic flux of the invention, including magnetic conduction backboard and multiple magnetic
Pole, the magnetic pole are in have certain thickness laminated structure, have top surface, bottom surface and two mutually opposing 180 ° of opposed sides
Portion, two side portions are vertical with top and bottom, and the both ends of a side portion are respectively connected with the both ends of another side portion,
Two ends in tip-angled shape of magnetic pole are formed,
Along the length direction of magnetic conduction backboard, successively continuous lie side by side is fixed on magnetic conduction backboard multiple magnetic poles, multiple magnetic poles
Respective two be parallel to each other in the line of end of tip-angled shape, and form angle with the length direction of magnetic conduction backboard,
Length of each magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard is substantially in first half cycle
Sinusoidal rule variation, the internal magnetic field of two adjacent magnetic poles is contrary, the internal magnetic field direction of the multiple magnetic pole with lead
Magnetic backboard is vertical.
Further, the top and bottom of the magnetic pole are substantially in quadrangle.
Further, a side portion of the magnetic pole is the curved surface of the top protruded outward at rear portion, another side
Portion is the fore curved surface in top protruded outward.
Further, using the line of the left end of mistake magnetic pole in the width direction of magnetic conduction backboard as the longitudinal axis and in magnetic conduction backboard
Length direction on cross magnetic pole the line of downside end be that horizontal axis constructs coordinate system, the top and bottom of the magnetic pole on magnetic conduction backboard
Downside curve and upside curve about point (L1/ 2, W1/ 2) it is centrosymmetric；
The boundary function of the upside curve of the top and bottom of fixed magnetic pole is on magnetic conduction backboard：
In formula, t meets
W1For length of the single magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard on magnetic conduction backboard；
L1For length of the single magnetic pole on the length direction of magnetic conduction backboard on magnetic conduction backboard；A is that each point and the magnetic pole are left on curve
Hold distance of the end on the length direction of magnetic conduction backboard；θ is the folder of the length direction of the pole end piece line and magnetic conduction backboard
Angle, h1It is each point on curve at a distance from the length direction extension line for crossing the magnetic pole left end end.
Permanent magnet motor magnetic pole arrangement architecture proposed by the present invention can be realized following beneficial effect：
(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 permanent magnet motor magnetic pole arrangement architecture of the invention；
Fig. 2 is the perspective view 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.
In an embodiment of the present invention, as shown in Figure 1, 2, the permanent magnet motor magnetic pole arrangement architecture includes magnetic conduction backboard 1
With multiple magnetic poles, 4 magnetic poles Fig. 1, are illustrated only in 2, the geomery of each magnetic pole is identical, having the same between adjacent pole to set
Set relationship.The magnetic pole is in have certain thickness laminated structure, respectively has top surface, bottom surface and two opposed side portions,
Top and bottom are substantially in quadrangle, and two side portions are vertical with top and bottom respectively, the both ends of a side portion with it is another
The both ends of a side portion are respectively connected with, and form two ends in tip-angled shape of magnetic pole.One side portion of the magnetic pole is outside
In the curved surface at rear portion, another side portion is the fore curved surface in top protruded outward, two sides at the top of side protrusion
The mutually opposing 180 ° of settings in portion.
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 continuous lie side by side is fixed on magnetic conduction along the length direction L of magnetic conduction backboard 1 for first magnetic pole 2 and the second magnetic pole 3
On backboard 1 (that is, i.e. in terms of the length direction perpendicular to magnetic conduction backboard 1, adjacent two tip-angled shape of the first magnetic pole 2 and the second magnetic pole 3
End connects).Two of first magnetic pole 2 are in the line of the end of tip-angled shape and two ends in tip-angled shape of the second magnetic pole 3
Line be parallel to each other, and with the length direction L of magnetic conduction backboard 1 θ at an angle so that the first magnetic pole 2 and the second magnetic pole 3
Adjacent end portion 4,5 can mutually stagger, and reduce the first, second magnetic pole 2,3 in the generation of the magnetic flux leakage of tip-angled shape end.The
The length of one magnetic pole 2 and the second magnetic pole 3 on the width direction W vertical with the length direction L of magnetic conduction backboard 1 is substantially in preceding half cycle
The sinusoidal rule of phase changes.
Specifically, as shown in Figure 1, using the line for the left end for crossing magnetic pole in the width direction of magnetic conduction backboard 1 as the longitudinal axis
And the line that the downside end of magnetic pole is crossed on the length direction of magnetic conduction backboard 1 is that horizontal axis constructs coordinate system, the on magnetic conduction backboard 1
The lower curve and upside curve of the top and bottom of one magnetic pole 2 and the second magnetic pole 3 are about point (L1/ 2, W1/ 2) it is centrosymmetric.
Wherein, the boundary function of the upside curve of the top and bottom of the first magnetic pole 2 on magnetic conduction backboard 1 and the second magnetic pole 3 is：
In formula, t meets
W1For length of the single magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard on magnetic conduction backboard；
L1For length of the single magnetic pole on the length direction of magnetic conduction backboard on magnetic conduction backboard；A is that each point and the magnetic pole are left on curve
Hold distance of the end on the length direction of magnetic conduction backboard；θ is the folder of the length direction of the pole end piece line and magnetic conduction backboard
Angle, h1It is each point on curve at a distance from the length direction extension line for crossing the magnetic pole left end end.
The first adjacent magnetic pole 2 is contrary with the internal magnetic field of the second magnetic pole 3, and the top surface of the first magnetic pole 2 is the pole N, bottom
Face 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；The internal magnetic field direction of first magnetic pole 2 and the second magnetic pole 3 with lead
Magnetic backboard 1 is vertical.
In embodiments of the present invention, four tactic examples of magnetic pole are illustrated only, 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, can be used for linear motor；If be used for
Barrel-shaped motor, then magnetic pole encompasses barrel-shaped arrangement.
In the motor course of work, magnetic pole is along the inswept pole the direction of motion (direction of motion, that is, magnetic conduction backboard length direction L)
The boundary line of boots, pole shoe boundary line are generally perpendicular to the direction of motion, before being substantially in due to the length on the width direction W of each magnetic pole
The sinusoidal rule of half period changes, then the line length of the magnetic pole section of inswept pole shoe boundary line changes at sinusoidal rule.
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 (4)
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
It is：The magnetic pole is in have certain thickness laminated structure, has top surface, bottom surface and two mutually opposing 180 ° of opposed sides
Edge, two side portions are vertical with top and bottom, and phase is distinguished with the both ends of another side portion in the both ends of a side portion
Even, two ends in tip-angled shape of magnetic pole are formed,
Along the length direction of magnetic conduction backboard, successively continuous lie side by side is fixed on magnetic conduction backboard multiple magnetic poles, multiple magnetic poles it is each
It is parallel to each other from the line of two ends in tip-angled shape, and forms angle with the length direction of magnetic conduction backboard,
Length of each magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard is substantially in the sine of first half cycle
Rule variation, the internal magnetic field of two adjacent magnetic poles is contrary, and the internal magnetic field direction of the multiple magnetic pole and magnetic conduction are carried on the back
Plate is vertical.
2. permanent magnet motor magnetic pole arrangement architecture as described in claim 1, it is characterised in that：The top and bottom of the magnetic pole are big
Body is in quadrangle.
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
In the curved surface at rear portion, another side portion is the fore curved surface in top protruded outward at the top protruded outward.
4. the permanent magnet motor magnetic pole arrangement architecture as described in one of claim 1-3, it is characterised in that：In the width of magnetic conduction backboard
The line for spending on direction the left end for crossing magnetic pole is the longitudinal axis and crosses the downside end of magnetic pole on the length direction of magnetic conduction backboard
Line is that horizontal axis constructs coordinate system, and the curve of the downside of the top and bottom of the magnetic pole on magnetic conduction backboard and the curve of upside are about point
(L1/ 2, W1/ 2) it is centrosymmetric；
The boundary function of the upside curve of the top and bottom of fixed magnetic pole is on magnetic conduction backboard：
In formula, t meets：
W1For length of the single magnetic pole in the width direction vertical with the length direction of magnetic conduction backboard on magnetic conduction backboard；L1For
Length of the single magnetic pole on the length direction of magnetic conduction backboard on magnetic conduction backboard；A is each point and magnetic pole left end end on curve
Distance of the portion on the length direction of magnetic conduction backboard；θ is the angle of the length direction of the pole end piece line and magnetic conduction backboard, h1
It is each point on curve at a distance from the length direction extension line for crossing the magnetic pole left end end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710322889.9A CN108880028B (en) | 2017-05-09 | 2017-05-09 | Permanent magnet motor magnetic pole arrangement structure capable of generating sine magnetic flux |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710322889.9A CN108880028B (en) | 2017-05-09 | 2017-05-09 | Permanent magnet motor magnetic pole arrangement structure capable of generating sine magnetic flux |
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| CN108880028A true CN108880028A (en) | 2018-11-23 |
| CN108880028B CN108880028B (en) | 2024-01-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9001473D0 (en) * | 1990-04-24 | 1990-04-24 | Elmo Ab | synchronous |
| CA2331835A1 (en) * | 1998-05-08 | 1999-11-18 | Juha Pyrhonen | Permanent magnet synchronous machine |
| CN101699713A (en) * | 2009-10-28 | 2010-04-28 | 南京航空航天大学 | Rotor sectional type flux switching motor and method for improving sine degree of back electromotive force thereof |
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| JP2015153790A (en) * | 2014-02-11 | 2015-08-24 | 日東電工株式会社 | Permanent magnet and method of producing permanent magnet |
| CN105262254A (en) * | 2015-09-29 | 2016-01-20 | 河海大学 | Surface-built-in mixed speed-regulating permanent magnet synchronous motor |
| CN205407444U (en) * | 2016-02-18 | 2016-07-27 | 华南理工大学 | Surface mosaic formula selfstarting permanent magnet synchronous motor rotor |
| CN207166236U (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 CN201710322889.9A patent/CN108880028B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9001473D0 (en) * | 1990-04-24 | 1990-04-24 | Elmo Ab | synchronous |
| CA2331835A1 (en) * | 1998-05-08 | 1999-11-18 | Juha Pyrhonen | Permanent magnet synchronous machine |
| CN101699713A (en) * | 2009-10-28 | 2010-04-28 | 南京航空航天大学 | Rotor sectional type flux switching motor and method for improving sine degree of back electromotive force thereof |
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| JP2015153790A (en) * | 2014-02-11 | 2015-08-24 | 日東電工株式会社 | Permanent magnet and method of producing permanent magnet |
| CN105262254A (en) * | 2015-09-29 | 2016-01-20 | 河海大学 | Surface-built-in mixed speed-regulating permanent magnet synchronous motor |
| CN205407444U (en) * | 2016-02-18 | 2016-07-27 | 华南理工大学 | Surface mosaic formula selfstarting permanent magnet synchronous motor rotor |
| CN207166236U (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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| CN108880028B (en) | 2024-01-02 |
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