CN103904851A - Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft - Google Patents
Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft Download PDFInfo
- Publication number
- CN103904851A CN103904851A CN201410123390.1A CN201410123390A CN103904851A CN 103904851 A CN103904851 A CN 103904851A CN 201410123390 A CN201410123390 A CN 201410123390A CN 103904851 A CN103904851 A CN 103904851A
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- China
- Prior art keywords
- magnet ring
- ring structure
- synchronous motor
- magnetic pole
- armature spindle
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Abstract
The invention provides a shape-optimized magnetic ring structure, a shaft and a permanent magnet synchronous motor. Magnetic poles of a permanent magnet of the magnetic ring structure are connected into a whole, the outer surfaces of the magnetic poles are circular, the lower surfaces of the magnetic poles are arc, the rotor shaft is designed to be in an inward-concave arc shape, and the rotor shaft is directly sleeved with a magnetic ring in a hot mode through an interference fit method. The magnetic ring and the rotor shaft are designed to be used for producing an air-gap magnetic field which is distributed to form an approximate sine shape, higher harmonics are reduced or eliminated, and the overall performance of the motor is improved.
Description
Technical field
The present invention relates to a kind of permagnetic synchronous motor, more specifically relate to a kind of magnet ring structure, axle of optimised shape and use its permagnetic synchronous motor.
Background technology
In order to produce high-intensity air-gap field, the rare earth permanent-magnetic material of the at present general serviceability excellence of permagnetic synchronous motor.For the permagnetic synchronous motor of small-power, small size, excitation permanent magnet generally adopts multi-pole ring magnet, i.e. magnet ring.What Fig. 1 showed is a kind of radial magnetizing magnet ring of modal 5 pairs of utmost points, and the real surfaces externally and internally of its feature is circle, and is concentric circles, and annulus even thickness is consistent.On rotor, do not have iron core, magnet ring is directly enclosed within on armature spindle.Armature spindle is cylindrical.Corresponding motor gas-gap magnetic flux density waveform as shown in Figure 2.Obviously, air gap flux density waveform sine is poor, and wave distortion is serious, contains the high order harmonic component compared with horn of plenty.High order harmonic component not only increases core loss, and causes vibrations, the noise of motor.In addition also reduce, the control precision of motor.
Summary of the invention
The present invention proposes in order to address the above problem, and its main purpose is to produce comparatively sinusoidal air gap flux density waveform.The present invention relates to a kind of permagnetic synchronous motor, the present invention more specifically relates to a kind of magnet ring and armature spindle of optimised shape.The permanent magnet pole of this magnet ring connects as a whole, and the external surface shape of magnetic pole is circular, and underside shape is circular arc, and it is circular-arc that armature spindle is designed to indent, adopts the mode of interference fit that magnet ring direct heat is enclosed within on armature spindle.The air-gap field that is designed for generation near sinusoidal distribution of shapes of this magnet ring and armature spindle, reduces or Eliminate highter harmonic, improves the overall performance of motor.
A first aspect of the present invention provides a kind of magnet ring structure, comprise rare earth permanent-magnetic material and magnetic pole, between adjacent two magnetic poles of magnet ring, be the non-permanent magnetic material magnetizing, it is characterized in that: the external surface shape of described magnet ring structure is set to circle, underside shape is set to circular arc; The space mechanism angle that each magnetic pole occupies:
θ=360 °/P, wherein P is the number of magnetic poles of the permagnetic synchronous motor that is used for of described magnet ring structure.
Preferably, described magnetic pole magnetize part mechanical angle be θ
1, the non-mechanical angle that magnetizes part of magnetic pole is θ
2, wherein θ
1and θ
2meet relation: θ
1=(0.70～0.90) θ, θ
2=θ-θ
1.
Preferably, when described magnet ring structure is during for number of magnetic poles is 10, number of stator slots is 12 permagnetic synchronous motor, described θ
1=29 °, θ
2=7 °.
Preferably, described magnetic pole maximum thickness is h
max, minimum value is h
min, between maximum and minimum value, pass is: h
min=(0.5～0.75) h
max.
Preferably, between maximum and minimum value, pass is: h
min=0.6h
max.
Preferably, based on θ
1, h
maxand h
mindetermine magnet ring magnetic pole outer arc radius.
Preferably, the mode of magnetizing of described magnetic pole is parallel magnetization or radial magnetizing.
A second aspect of the present invention, provides a kind of armature spindle for permagnetic synchronous motor, is designed to multistage indent circular-arc, in order to coordinate the magnet ring structure of described permagnetic synchronous motor, it is characterized in that: armature spindle and magnet ring adopt interference fit.
Preferably, the magnitude of interference of described armature spindle and magnet ring is 0～0.03mm.
A third aspect of the present invention, provides a kind of permagnetic synchronous motor, comprising: motor winding, rotor and motor stator core, it is characterized in that, and this rotor comprises above-mentioned magnet ring structure and the axle with magnet ring structure interference fit.
The beneficial effect of technique scheme of the present invention is as follows: the permanent magnet pole of this magnet ring connects as a whole, the external surface shape of magnet ring is circular, underside shape is circular arc, it is circular-arc that armature spindle is designed to multistage indent, adopts the mode of interference fit that magnet ring direct heat is enclosed within on armature spindle.The air-gap field that is designed for generation near sinusoidal distribution of shapes of this magnet ring and armature spindle, reduces or Eliminate highter harmonic, improves the overall performance of motor.
Brief description of the drawings
Fig. 1 is---the magnet ring structure schematic diagram of reference example in prior art.
Fig. 2 is---the air gap flux density oscillogram of reference example motor in prior art.
Fig. 3 is---the harmonic amplitude of the air gap flux density waveform of reference example motor in prior art.
Fig. 4 is---embodiments of the invention magnet ring 2-D schematic diagram.
Fig. 5 is---embodiments of the invention magnet ring 3-D structural representation.
Fig. 6 is---the magnetic pole parallel magnetization schematic diagram of magnet ring of the present invention.
Fig. 7 is---the magnetic pole radial magnetizing schematic diagram of magnet ring of the present invention.
Fig. 8 is---the air gap flux density oscillogram of embodiment of the present invention motor.
Fig. 9 is---the harmonic amplitude of the air gap flux density waveform of embodiment of the present invention motor.
Figure 10 is---embodiment of the present invention permagnetic synchronous motor constructed profile.
Description of reference numerals:
The conventional magnet ring of 1-; The conventional magnet ring N of the 2-utmost point; The conventional magnet ring S of the 3-utmost point; 4-magnet ring; The 401-magnet ring magnetic pole N utmost point; The 402-magnet ring magnetic pole S utmost point; 5-rotor; 6-permagnetic synchronous motor; 7-permagnetic synchronous motor winding; 8-permanent-magnetic synchronous motor stator iron core.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, illustrate with reference to the accompanying drawings the permagnetic synchronous motor according to embodiment of the present invention, embodiments of the present invention are not limited to the execution mode of following example.
According to embodiment of the present invention, magnet ring adopts rare earth permanent-magnetic material 4, and the external surface shape of magnet ring is circular, and underside shape is circular arc.
The number of magnetic poles of permagnetic synchronous motor is made as to P, and reference example and embodiment are number of magnetic poles P=10.The space mechanism angle that every utmost point occupies:
If magnet ring magnetic pole of the present invention magnetizes, the mechanical angle of part is θ
1, the non-mechanical angle that magnetizes part of magnetic pole is θ
2, as shown in Figure 4.Generally θ
1=(0.70～0.90) θ, θ
2=θ-θ
1.For P=10, Z=12 permagnetic synchronous motor, preferred, θ
1=29 °, θ
2=7 °.
If magnet ring magnetic pole maximum thickness of the present invention is h
max, minimum value is h
min, as shown in Figure 6.
H
min=(0.5～0.75) h
max, in embodiment, preferred h
min=0.6h
max.
According to θ
1, h
maxand h
minthese three restrictive conditions, can determine magnet ring pole bore arc radius, and the radian of circular arc is θ
1.
The mode of magnetizing of the magnetic pole of magnet ring of the present invention mainly contains two kinds, parallel magnetization and radial magnetizing, as shown in Figure 6 and Figure 7.Preferably, parallel magnetization.
As shown in Figure 6, it is circular-arc that armature spindle is designed to multistage indent to the shape of armature spindle, and in order to coordinate magnet ring, both adopt interference fit, and the magnitude of interference is generally 0～0.03mm.
The permagnetic synchronous motor of the embodiment of the present invention as shown in figure 10.Major part comprises: magnet ring 4, motor winding 7, motor stator core 8.
The technique that adopts hot jacket, is directly installed on magnet ring 4 on armature spindle 5.
Permagnetic synchronous motor number of magnetic poles P=10, number of stator slots Z=12 in embodiment, for suitable change number of magnetic poles M and number of stator slots, the permagnetic synchronous motor forming based on aforesaid way, within it still belongs to scope of the present invention.
Above, embodiments of the present invention have been carried out to brief description, but if so-called those skilled in the art, not departing from the scope of important content of the present invention, can suitably change above-mentioned execution mode of the present invention, and can the method for appropriately combined utilization based on above-mentioned execution mode and modification.In other words, even such technology being changed etc. is also contained in scope of the present invention.
Claims (10)
1. a magnet ring structure, comprises rare earth permanent-magnetic material and magnetic pole, between adjacent two magnetic poles of magnet ring, is the non-permanent magnetic material magnetizing, and it is characterized in that:
The external surface shape of described magnet ring structure is set to circle, and underside shape is set to circular arc; The space mechanism angle that each magnetic pole occupies: θ=360 °/P, wherein P is the number of magnetic poles of the permagnetic synchronous motor that is used for of described magnet ring structure.
2. magnet ring structure as claimed in claim 1, is characterized in that:
Described magnetic pole magnetize part mechanical angle be θ
1, the non-mechanical angle that magnetizes part of magnetic pole is θ
2, wherein θ
1and θ
2meet relation: θ
1=(0.70～0.90) θ, θ
2=θ-θ
1.
3. magnet ring structure as claimed in claim 1, is characterized in that:
When described magnet ring structure is during for number of magnetic poles is 10, number of stator slots is 12 permagnetic synchronous motor, described θ
1=29 °, θ
2=7 °.
4. the magnet ring structure as described in claim 1 or 2 or 3, is characterized in that:
Described magnetic pole maximum thickness is h
max, minimum value is h
min, between maximum and minimum value, pass is: h
min=(0.5～0.75) h
max.
5. magnet ring structure as claimed in claim 4, is characterized in that:
Between maximum and minimum value, close and be: h
min=0.6h
max.
6. magnet ring structure as claimed in claim 4, is characterized in that:
Based on θ
1, h
maxand h
mindetermine magnet ring magnetic pole outer arc radius.
7. the magnet ring structure as described in claim 1 or 2 or 3, is characterized in that:
The mode of magnetizing of described magnetic pole is parallel magnetization or radial magnetizing.
8. for an armature spindle for permagnetic synchronous motor, described armature spindle is that multistage indent is circular-arc, in order to coordinate the magnet ring structure of described permagnetic synchronous motor, it is characterized in that: armature spindle and magnet ring adopt interference fit.
9. armature spindle as claimed in claim 8, is characterized in that:
The magnitude of interference of described armature spindle and magnet ring is 0～0.03mm.
10. a permagnetic synchronous motor, comprise: motor winding, rotor and motor stator core, it is characterized in that, this rotor comprises in the claims 1-7 arbitrary described armature spindle in arbitrary described magnet ring structure and the claims 8-9, their both interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123390.1A CN103904851A (en) | 2014-03-28 | 2014-03-28 | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123390.1A CN103904851A (en) | 2014-03-28 | 2014-03-28 | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103904851A true CN103904851A (en) | 2014-07-02 |
Family
ID=50996039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410123390.1A Pending CN103904851A (en) | 2014-03-28 | 2014-03-28 | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103904851A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105012124A (en) * | 2015-08-25 | 2015-11-04 | 浙江和也健康科技有限公司 | Massage wheel adopting high space magnetic energy field and massage movement |
| CN105167976A (en) * | 2015-08-25 | 2015-12-23 | 浙江和也健康科技有限公司 | Magnetic massage wheel and massage mechanism |
| CN105167978A (en) * | 2015-08-25 | 2015-12-23 | 浙江恒林椅业股份有限公司 | Magnetic massage wheel and massage mechanism |
| CN106849390A (en) * | 2017-04-13 | 2017-06-13 | 浙江贝德泵业有限公司 | A kind of air conditioning pump with permagnetic synchronous motor |
| CN108565993A (en) * | 2018-06-11 | 2018-09-21 | 成都银河磁体股份有限公司 | A kind of magnet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004208341A (en) * | 2002-11-05 | 2004-07-22 | Hitachi Ltd | Permanent magnet rotating electric machine |
| JP2005295745A (en) * | 2004-04-02 | 2005-10-20 | Nissan Motor Co Ltd | Process for manufacturing rotor for rotary electric machine and rotor for rotary electric machine |
| JP2008092702A (en) * | 2006-10-03 | 2008-04-17 | Mitsubishi Electric Corp | Ring-type sintered magnet, rotor, and dynamo-electric machine |
| CN102015197A (en) * | 2007-11-30 | 2011-04-13 | 罗伯特.博世有限公司 | Shaft-hub component and method for producing such a component |
| CN203883648U (en) * | 2014-03-28 | 2014-10-15 | 湖北立锐机电有限公司 | Magnet ring structure, shaft, and permanent magnet synchronous motor using the same |
-
2014
- 2014-03-28 CN CN201410123390.1A patent/CN103904851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004208341A (en) * | 2002-11-05 | 2004-07-22 | Hitachi Ltd | Permanent magnet rotating electric machine |
| JP2005295745A (en) * | 2004-04-02 | 2005-10-20 | Nissan Motor Co Ltd | Process for manufacturing rotor for rotary electric machine and rotor for rotary electric machine |
| JP2008092702A (en) * | 2006-10-03 | 2008-04-17 | Mitsubishi Electric Corp | Ring-type sintered magnet, rotor, and dynamo-electric machine |
| CN102015197A (en) * | 2007-11-30 | 2011-04-13 | 罗伯特.博世有限公司 | Shaft-hub component and method for producing such a component |
| CN203883648U (en) * | 2014-03-28 | 2014-10-15 | 湖北立锐机电有限公司 | Magnet ring structure, shaft, and permanent magnet synchronous motor using the same |
Non-Patent Citations (1)
| Title |
|---|
| 王秀和: "《永磁电机》", 31 January 2011, 中国电力出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105012124A (en) * | 2015-08-25 | 2015-11-04 | 浙江和也健康科技有限公司 | Massage wheel adopting high space magnetic energy field and massage movement |
| CN105167976A (en) * | 2015-08-25 | 2015-12-23 | 浙江和也健康科技有限公司 | Magnetic massage wheel and massage mechanism |
| CN105167978A (en) * | 2015-08-25 | 2015-12-23 | 浙江恒林椅业股份有限公司 | Magnetic massage wheel and massage mechanism |
| CN106849390A (en) * | 2017-04-13 | 2017-06-13 | 浙江贝德泵业有限公司 | A kind of air conditioning pump with permagnetic synchronous motor |
| CN108565993A (en) * | 2018-06-11 | 2018-09-21 | 成都银河磁体股份有限公司 | A kind of magnet |
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Application publication date: 20140702 |
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