CN103647422B - A kind of magnetic circuit tandem type motor using hybrid permanent magnet material - Google Patents
A kind of magnetic circuit tandem type motor using hybrid permanent magnet material Download PDFInfo
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- CN103647422B CN103647422B CN201310664997.6A CN201310664997A CN103647422B CN 103647422 B CN103647422 B CN 103647422B CN 201310664997 A CN201310664997 A CN 201310664997A CN 103647422 B CN103647422 B CN 103647422B
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Abstract
The invention discloses a kind of series-connection hybrid magnetic material motor, including excitation, external stator and modularity internal rotor, three-phase alternating current armature it is placed with on described external stator, described three-phase alternating current armature uses concentratred winding, described excitation uses hybrid permanent magnet material, and described excitation includes low performance ferrite permanent-magnet materials and high-performance Ne-Fe-B permanent-magnet material.The magnetic circuit making low performance ferrite and high-performance Ne-Fe-B constitutes series connection.This series-connection hybrid magnetic material motor takes full advantage of the performance difference of neodymium iron boron and ferrite magnetic materials so that the type motor has the back-emf of highly sineization.Wide prospect is opened for being used in mixed way of magnetic material.
Description
Technical field
The present invention relates to a kind of motor, refer in particular to a kind of magnetic circuit tandem type motor using hybrid permanent magnet material.
Background technology
In recent years, along with the development of high performance permanent magnetic materials, magneto achieves significant progress.It is little that such motor has volume, and power density is high, the feature that efficiency is high.Meanwhile, the price of high performance permanent magnetic materials is also climbing up and up.In order to reduce the manufacturing cost of motor, two kinds of common threads are suggested.A kind of is that the permanent magnet material utilizing low performance is to replace high performance permanent magnet material.Another kind is by using new silicon steel material, thus does not use permanent magnet material in motor.
Low performance permanent magnet material and the high performance permanent magnet material mentioned in existing document are primarily referred to as ferrite and neodymium iron boron.The outstanding advantages of Ferrite Material is: cheap, without rare earth material；Manufacturing process is simple；Coercivity is big；Gram degaussing ability is strong.But ferritic magnetic is long-pending can be relatively low, and neodymium iron boron to be current magnetic long-pending can be the highest permanent magnet material.In order to utilize the ferrite of low performance to replace neodymium iron boron, first have to find to have the electric machine structure playing ferrite advantage.Currently with being most widely radial electric machine structure.Document " Alternative rotor designs
for high performance brushless permanent magnet machines for hybrid electric
Vehicles " in (publish in IEEE Transactions in 2012
Magnetics volume 48,2 phases, 835-838 page) successfully utilize ferrite to replace neodymium iron boron at radial electric machine structure, and make this low performance ferrite motor characteristic suitable with high-performance Ne-Fe-B motor.On this basis, document " Design and analysis of a
spoke type motor with segmented pushing permanent magnet for concentrating
Air-gap flux density " (publish in IEEE Transactions on Magnetics in 2013 volume 49,5 phases, 2397-2400 page) by increasing ferritic magnetism gathering rings so that the air gap flux density in motor increases.On the other hand, in some electric machine structure, avoided the use of permanent magnet material by application Novel silicon steel sheet material.Document " Torque density and
efficiency improvements of a switched reluctance motor without rare-earth material
For hybrid vehicles " in (publishing in IEEE Transactions on Industry Applications in 2011 volume 47; 3 phases; 1240-1246 page) by using novel low-loss silicon steel material to improve efficiency and the torque density of switched reluctance machines so that this motor has the advantage compared favourably with magneto.In sum, the ferrite no matter utilizing low performance replaces high performance neodymium iron boron or uses new material can obtain preferable result.
Summary of the invention
For problems of the prior art, it is an object of the invention to provide a kind of ferrite both having used low performance, use again the magnetic circuit tandem type motor using hybrid permanent magnet material of high performance neodymium iron boron.
In order to achieve the above object, the present invention is by the following technical solutions: a kind of magnetic circuit tandem type motor using hybrid permanent magnet material, including excitation, external stator and modularity internal rotor, three-phase alternating current armature it is placed with on described external stator, described three-phase alternating current armature uses concentratred winding, described excitation uses hybrid permanent magnet material, and described excitation includes low performance ferrite permanent-magnet materials and high-performance Ne-Fe-B permanent-magnet material.
Described internal rotor uses modular construction, and described internal rotor module is " convex " font, and the both shoulders of described internal rotor are provided with low performance ferrite permanent-magnet materials.
Being placed with high-performance Ne-Fe-B permanent-magnet material between described internal rotor, described low performance ferrite permanent-magnet materials and the magnetic circuit of high-performance Ne-Fe-B permanent-magnet material are series connection.
Use after technique scheme, the method have the advantages that 1, the rotor of the present invention uses modular construction, it is easy to processing.
2, the present invention takes full advantage of " convex " font rotor module so that the ferrite of low performance and the series connection of high performance neodymium iron boron magnetic circuit.
3, ferrite and the performance difference of neodymium iron boron during the present invention makes full use of series circuit so that this hybrid permanent magnet material motor obtains the back-emf of highly sineization.
Accompanying drawing explanation
Fig. 1 is present configuration sketch；
Fig. 2 is the magnetizing direction of ferrite and neodymium iron boron；
Fig. 3 is ferrite and neodymium iron boron magnetic circuit；
Fig. 4 is back-emf；
Fig. 5 is back-emf frequency analysis；
In figure: 1. external stator；2. concentratred winding；3. internal rotor；4. high-performance Ne-Fe-B permanent-magnet material；5. low performance ferrite permanent-magnet materials.
Detailed description of the invention
Below according to Figure of description and specific embodiment, the present invention is further explained.
As it is shown in figure 1, a kind of magnetic circuit tandem type motor using hybrid permanent magnet material, including excitation, external stator 1 and modularity internal rotor 3, the iron core of external stator 1 and internal rotor 3 all uses domestic conventional D23 material punching to be overrided to form.Being placed with three-phase alternating current armature on described external stator 1, described three-phase alternating current armature uses concentratred winding 2, described excitation to use hybrid permanent magnet material, and described excitation includes low performance ferrite permanent-magnet materials 5 and high-performance Ne-Fe-B permanent-magnet material 4.
Described internal rotor 3 uses modular construction, described internal rotor 3 module to be " convex " font, and the both shoulders of described internal rotor 3 are provided with low performance ferrite permanent-magnet materials 5.
Being placed with high-performance Ne-Fe-B permanent-magnet material 4 between described internal rotor 3, described low performance ferrite permanent-magnet materials 5 and the magnetic circuit of high-performance Ne-Fe-B permanent-magnet material 4 are series connection.
As in figure 2 it is shown, the ferritic magnetizing direction on each " convex " font rotor module both shoulders is consistent, and pointing to the center of circle, the magnetizing direction of the low performance ferrite permanent-magnet materials 5 on adjacent two " convex " font rotor module both shoulders is contrary.The magnetizing direction of the high-performance Ne-Fe-B permanent-magnet material 4 on each " convex " font rotor module both sides is contrary.After the magnetizing direction of low performance ferrite permanent-magnet materials 5 and high-performance Ne-Fe-B permanent-magnet material 4 determines, low performance ferrite permanent-magnet materials 5 and high-performance Ne-Fe-B permanent-magnet material 4 are the formation of the relation of series connection in magnetic circuit.
As shown in Figure 3.The magnetic line of force from high-performance Ne-Fe-B permanent-magnet material 4 through internal rotor 3 to low performance ferrite permanent-magnet materials 5 again through external stator 1 eventually passes back to high-performance Ne-Fe-B permanent-magnet material 4.Now low performance ferrite permanent-magnet materials 5 and high-performance Ne-Fe-B permanent-magnet material 4 can regard two joint low performances and high performance power sources in series as in magnetic circuit.In order to fully demonstrate the advantage of this hybrid permanent magnet material motor, establish three motor models.Model I: the low performance ferrite permanent-magnet materials 5 do not installed on " convex " font rotor module both shoulders；Model II: rotor module is not processed into " convex " font, and rotor only has high-performance Ne-Fe-B permanent-magnet material 4；Model III: the hybrid permanent magnet material motor proposed.
As shown in Figure 4, the counter potential waveform of the single turn concentratred winding 2 of three kinds of models.As can be seen from the figure the back-emf of model III is sinusoidal, and the back-emf of model II is trapezoidal, and the back-emf of model I occurs subsiding in the position placing low performance ferrite permanent-magnet materials 5.
Accompanying drawing 5 gives the Fourier analysis of back-emf, it can be seen that the first-harmonic with maximum of hybrid permanent magnet material motor and less harmonic wave, therefore tandem type hybrid permanent magnet material is obtained in that the back-emf of highly sineization.Wide prospect is opened for being used in mixed way of magnetic material.
Claims (1)
1. the magnetic circuit tandem type motor using hybrid permanent magnet material, including excitation, external stator and modularity internal rotor, it is characterized in that being placed with on described external stator three-phase alternating current armature, described three-phase alternating current armature uses concentratred winding, described excitation uses hybrid permanent magnet material, and described excitation includes low performance ferrite permanent-magnet materials and high-performance Ne-Fe-B permanent-magnet material；Described internal rotor uses modular construction, and described internal rotor module is " convex " font, and the both shoulders of described internal rotor are provided with low performance ferrite permanent-magnet materials；Being placed with high-performance Ne-Fe-B permanent-magnet material between described internal rotor, described low performance ferrite permanent-magnet materials and the magnetic circuit of high-performance Ne-Fe-B permanent-magnet material are series connection.
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| CN201310664997.6A CN103647422B (en) | 2013-12-09 | 2013-12-09 | A kind of magnetic circuit tandem type motor using hybrid permanent magnet material |
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| CN201310664997.6A CN103647422B (en) | 2013-12-09 | 2013-12-09 | A kind of magnetic circuit tandem type motor using hybrid permanent magnet material |
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| CN103647422A CN103647422A (en) | 2014-03-19 |
| CN103647422B true CN103647422B (en) | 2016-08-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108322005B (en) * | 2018-03-09 | 2024-01-12 | 沈阳工业大学 | High-speed permanent magnet generator adopting circumferential integral mixed permanent magnet rotor |
| CN113949186B (en) * | 2021-09-30 | 2023-03-14 | 南京航空航天大学 | Few-harmonic alternating-pole hub motor |
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| CN202634108U (en) * | 2012-01-22 | 2012-12-26 | 浙江大学 | Radial type PMSM rotor structure |
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| CN203674940U (en) * | 2013-12-09 | 2014-06-25 | 江苏大学 | Series-type hybrid magnetic material motor |
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| CN1044178C (en) * | 1991-02-27 | 1999-07-14 | 中国科学院电工研究所 | Electric motor with combined magnetic pole of Nd-Fe-B permanent magnet and soft magnet |
| JP2010022147A (en) * | 2008-07-11 | 2010-01-28 | Hitachi Ltd | Sintered magnet motor |
| JP6083059B2 (en) * | 2012-03-21 | 2017-02-22 | 株式会社明電舎 | Rotor structure of permanent magnet rotating machine |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1617422A (en) * | 2004-11-29 | 2005-05-18 | 天津大学 | Controllable flux permanent magnetic synchronous motor of multiple pole number built-in mixed rotor magnetic path structure |
| CN102067412A (en) * | 2008-06-20 | 2011-05-18 | 株式会社东芝 | Permanent magnet type rotating electric machine |
| CN102257702A (en) * | 2008-12-18 | 2011-11-23 | 株式会社东芝 | Permanent magnet type rotary electric machine |
| CN202424345U (en) * | 2011-12-31 | 2012-09-05 | 北京明诚技术开发有限公司 | Permanent magnet motor with mixed magnetic poles |
| CN202634108U (en) * | 2012-01-22 | 2012-12-26 | 浙江大学 | Radial type PMSM rotor structure |
| CN103051134A (en) * | 2012-12-26 | 2013-04-17 | 南昌大学 | Serial-magnetic-circuit hybrid-excitation permanent magnet motor |
| CN203674940U (en) * | 2013-12-09 | 2014-06-25 | 江苏大学 | Series-type hybrid magnetic material motor |
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