CN104052221A - Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials - Google Patents
Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials Download PDFInfo
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- CN104052221A CN104052221A CN201410257663.1A CN201410257663A CN104052221A CN 104052221 A CN104052221 A CN 104052221A CN 201410257663 A CN201410257663 A CN 201410257663A CN 104052221 A CN104052221 A CN 104052221A
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Abstract
The invention discloses a Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials. The motor is an external-magnetic-field Halbach permanent magnetic fault-tolerant motor. A stator is composed of a stator iron core and a single-layer concentrated winding. A rotor comprises an external-magnetic-field Halbach array and a stainless steel sleeve. Radial magnetized neodymium iron boron permanent magnetic materials and tangential magnetized ferrite permanent magnetic materials are arranged in an alternate mode so that the Halbach permanent magnetic array can be formed; the Halbach permanent magnetic array is sleeved with the sleeve and the sleeve is used for reinforcing the permanent magnetic materials and improving the mechanical roughness of the rotor. According to the Halbach permanent magnetic fault-tolerant motor made from the mixed magnetic materials, due to the fact that the ferrite permanent magnetic materials are adopted, the use quantity of rare earth permanent magnetic materials is reduced, the manufacturing cost of the motor is reduced, and the wide prospect of application of the mixed magnetic materials on the Halbach permanent magnetic motor is achieved.
Description
Technical field
The present invention relates to a kind of permagnetic synchronous motor, refer in particular to a kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes.
Background technology
Because of its unique self-shileding magnetization configuration, Halbach magneto tool has the following advantages: in (1) Halbach permanent magnet array, exist radially and tangential magnetic field, both increase substantially by the overlapped magnetic flux density that makes air gap, thereby can effectively reduce the volume of motor, improve the power density of motor.(2) Halbach permanent magnet array can produce the air-gap field of Sine distribution, thereby does not need rotor skewed slot.(3) negligible location torque, thereby can effectively reduce torque pulsation.(4) rotor can be made up of Halbach permanent magnet array, does not need rotor core or shell, has alleviated the volume weight of motor.Due to its special self-shileding magnetization configuration, than other permanent magnet motor structures, Halbach magneto needs more rare earth permanent-magnetic material.
Due to rare earth permanent-magnetic material content is limited and in recent years its price climb up and up.How to reduce the manufacturing cost of consumption and the reduction motor of magneto middle rare earth permanent magnetic material, become the focus of current magneto research.Ferrite permanent-magnet materials is owing to not containing rare earth element, cheap, the more important thing is that its rich content and supply are stable.Thereby ferrite permanent-magnet materials becomes the substitute of rare earth permanent-magnetic material preferably.Existing many scholars start to utilize the ferrite permanent-magnet materials of low price to replace the Nd-Fe-Bo permanent magnet material of high price, and have obtained good achievement in research.The Dorroll of Sydney, AUS University of Science and Technology, the designs such as David G have also been manufactured the radial motor of Ferrite Material, make the characteristic of this motor characteristic and NdFeB material motor suitable.On this basis, the Mohammad of Ulsan, Korea university, the designs such as Mizanoor Rahman have also been analyzed the radial motor of Ferrite Material with magnetism gathering rings, due to the use of Ferrite Material magnetism gathering rings, have increased the air-gap field of motor.But than traditional rare earth magneto, the diameter of ferrite permanent-magnet motor or length can increase.
The fault-tolerant ability of magneto is most important to its reliable and stable operation.Fault-tolerant teeth and individual layer concentrate winding can make magneto have the ability that each phase magnetic isolation, hot isolation, physical isolation and electricity are isolated, and realized structurally intrinsic decoupling function of motor.Therefore the highly reliable design for magneto and high stable operation, the centralized winding of fault-tolerant teeth and individual layer is necessary.
The permanent magnetic material of applying in Halbach permanent magnet motor structure is at present generally neodymium iron boron or samarium cobalt rare earth permanent magnet material.In order to reduce the consumption and the manufacturing cost that reduces motor of rare earth permanent-magnetic material, the present invention proposes a kind of high reliability Halbach fault tolerant permanent magnet machine that mixes magnetic material.
Summary of the invention
The object of the invention is to propose a kind of mixing magnetic material high reliability Halbach fault tolerant permanent magnet machine that reduces rare earth permanent-magnetic material consumption.Based on above-mentioned requirements, the present invention has announced a kind of mixing magnetic material Halbach fault tolerant permanent magnet machine.This composite material Halbach motor refers to and in this motor, had both used ferrite permanent-magnet materials, uses again Nd-Fe-Bo permanent magnet material.
The technical solution used in the present invention is:
A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes, the stator that comprises rotor and formed by stator core and stator winding, described rotor comprises the Halbach permanent magnet array of external magnetic field, and described Halbach permanent magnet array is made up of alternately Nd-Fe-Bo permanent magnet material and the tangential magnetized ferrite permanent-magnet materials of diametrical magnetization.Due to the use of ferrite permanent-magnet materials, reduce the consumption of rare earth permanent-magnetic material.
Further, described stator winding is the centralized winding of individual layer, and the centralized winding of described individual layer is alternately wrapped on stator tooth.In having adopted the centralized winding of fault-tolerant teeth and individual layer, this motor is structurally had from decoupling function, thereby there is the fault-tolerant ability of each phase magnetic isolation, hot isolation, physical isolation and electricity isolation.
Further, described rotor also comprises stainless sleeve, and described sleeve set is in described Halabch permanent magnet array outside.Stainless sleeve set, in Halbach array outside, has been reinforced the mechanical robustness of Halbach permanent magnet array and enhancing rotatable parts.
Further, described stator core adopts the punching of WGT-200 material to be overrided to form.
The invention has the beneficial effects as follows:
Mixing magnetic material Halbach fault tolerant permanent magnet machine of the present invention is owing to having adopted the ferrite permanent-magnet materials of the low and rich content of price, reduce the consumption of rare earth permanent-magnetic material, the cost of motor also can reduce simultaneously, for the application that expands magneto provides possibility.
Brief description of the drawings
Fig. 1 is structure diagram of the present invention;
Fig. 2 is the magnetizing direction of ferrite and neodymium iron boron;
Fig. 3 is the back-emf contrast of the present invention and traditional rare earth Halbach magneto;
Fig. 4 is the harmonic analysis of the back-emf of the present invention and traditional rare earth Halbach magneto.
In figure: 1. stator core; 2. the centralized winding of individual layer; 3. sleeve; 4. Nd-Fe-Bo permanent magnet material; 5. ferrite permanent-magnet materials.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The structure of a kind of a kind of execution mode that mixes magnetic material Halbach fault tolerant permanent magnet machine of the present invention as shown in Figure 1, the stator that comprises rotor and be made up of stator core 1 and stator winding, stator core 1 adopts domestic conventional WGT-200 material punching to be overrided to form.Rotor comprises the Halbach permanent magnet array of external magnetic field, this Halbach permanent magnet array is made up of alternately Nd-Fe-Bo permanent magnet material 4 and the tangential magnetized ferrite permanent-magnet materials 5 of diametrical magnetization, the magnetizing direction of Nd-Fe-Bo permanent magnet material 4 and ferrite permanent-magnet materials 5 and arranging as shown in Figure 2, due to the use of ferrite permanent-magnet materials, reduce the consumption of rare earth permanent-magnetic material.Stator winding is the centralized winding of four phase individual layers, alternate being alternately wrapped on stator tooth, owing to having adopted the centralized winding of fault-tolerant teeth and individual layer, this motor is structurally had from decoupling function, thereby there is the fault-tolerant ability of each phase magnetic isolation, hot isolation, physical isolation and electricity isolation.Rotor also comprises stainless sleeve 3, and sleeve 3 is sleeved on described Halabch permanent magnet array outside, and stainless sleeve set, in Halbach array outside, has been reinforced the mechanical robustness of Halbach permanent magnet array and enhancing rotatable parts.
In order to embody the advantage of the fault-tolerant magneto of this mixing magnetic material Halbach, the present invention has provided the performance comparison of itself and traditional rare earth Halbach magneto.Accompanying drawing 3 has provided the counter potential waveform of the centralized winding 2 of individual layer of two kinds of models.Accompanying drawing 4 has provided the harmonic analysis of back-emf.In conjunction with Fig. 3 with in Fig. 4, can find out compared with traditional rare earth Halbach magneto, this mixing magnetic material Halbach magneto can provide close counter potential waveform, back-emf fundamental voltage amplitude is also substantially close.Table 1 has provided the permanent magnetic material consumption of two motors and the contrast of ratio and back-emf amplitude, can find out that the neodymium iron boron consumption of this mixing magnetic material Halbach magneto only has 90% left and right of traditional rare earth permanent magnet Halbach motor.
Table 1
In sum, mixing magnetic material Halbach magneto can reduce the consumption of rare earth permanent magnet, can provide again the electromagnetic performance close with traditional rare earth Halbach magneto, for the mixing of magnetic material is used the wide prospect of having opened up.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. one kind is mixed magnetic material Halbach fault tolerant permanent magnet machine, the stator that comprises rotor and formed by stator core (1) and stator winding, it is characterized in that: described rotor comprises the Halbach permanent magnet array of external magnetic field, described Halbach permanent magnet array is made up of alternately Nd-Fe-Bo permanent magnet material (4) and the tangential magnetized ferrite permanent-magnet materials (5) of diametrical magnetization.
2. a kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes according to claim 1, is characterized in that: described stator winding is the centralized winding of individual layer, and the centralized winding of described individual layer is alternately wrapped on stator tooth.
3. a kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes according to claim 1 and 2, is characterized in that: described rotor also comprises stainless sleeve (3), and described sleeve (3) is sleeved on described Halabch permanent magnet array outside.
4. a kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes according to claim 1 and 2, is characterized in that: described stator core (1) adopts the punching of WGT-200 material to be overrided to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410257663.1A CN104052221A (en) | 2014-06-12 | 2014-06-12 | Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410257663.1A CN104052221A (en) | 2014-06-12 | 2014-06-12 | Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790468A (en) * | 2016-03-09 | 2016-07-20 | 哈尔滨工业大学 | Rotor of high-speed Halbach-type permanent magnet motor |
| JP2016195490A (en) * | 2015-03-31 | 2016-11-17 | アイチエレック株式会社 | Permanent magnet motor and compressor |
| CN106787072A (en) * | 2016-12-27 | 2017-05-31 | 北京工业大学 | A kind of marine fluid electricity generation system |
| JP2017123782A (en) * | 2017-04-18 | 2017-07-13 | アイチエレック株式会社 | Permanent magnet motor and compressor |
| CN111555492A (en) * | 2020-04-29 | 2020-08-18 | 南京航空航天大学 | Parallel-magnetizing small-rare-earth-combination local Halbach array high-speed permanent magnet motor |
| CN112350480A (en) * | 2020-12-14 | 2021-02-09 | 哈尔滨理工大学 | High-efficiency Halbach array permanent magnet synchronous motor |
| GB2586329A (en) * | 2019-05-31 | 2021-02-17 | Magnix Usa Inc | High-torque electric motor assembly |
| CN112653269A (en) * | 2020-11-19 | 2021-04-13 | 京马电机有限公司 | Rotor structure of high-power output motor |
| CN114123586A (en) * | 2021-11-22 | 2022-03-01 | 中国第一汽车股份有限公司 | Variable magnetic flux axial flux motor |
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| CN101707405A (en) * | 2009-11-30 | 2010-05-12 | 哈尔滨工业大学 | Halbach array external rotor of composite-structure permanent magnet motor |
| CN101783557A (en) * | 2010-02-08 | 2010-07-21 | 北京航空航天大学 | Permanent magnet synchronous motor without stator iron core |
| CN102403856A (en) * | 2011-09-05 | 2012-04-04 | 同济大学 | Controllable-flux permanent magnet synchronous motor and control system for electric vehicle |
| CN102497074A (en) * | 2011-12-26 | 2012-06-13 | 北京理工大学 | Multiphase fault tolerant permanent magnet motor based on birotor structure |
| CN102545515A (en) * | 2012-01-19 | 2012-07-04 | 天津清源电动车辆有限责任公司 | Permanent-magnet motor based on Halbach array for electric automobile hub |
| CN102904404A (en) * | 2012-08-13 | 2013-01-30 | 东南大学 | Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor |
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| CN101707405A (en) * | 2009-11-30 | 2010-05-12 | 哈尔滨工业大学 | Halbach array external rotor of composite-structure permanent magnet motor |
| CN101783557A (en) * | 2010-02-08 | 2010-07-21 | 北京航空航天大学 | Permanent magnet synchronous motor without stator iron core |
| CN102403856A (en) * | 2011-09-05 | 2012-04-04 | 同济大学 | Controllable-flux permanent magnet synchronous motor and control system for electric vehicle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016195490A (en) * | 2015-03-31 | 2016-11-17 | アイチエレック株式会社 | Permanent magnet motor and compressor |
| CN105790468A (en) * | 2016-03-09 | 2016-07-20 | 哈尔滨工业大学 | Rotor of high-speed Halbach-type permanent magnet motor |
| CN106787072A (en) * | 2016-12-27 | 2017-05-31 | 北京工业大学 | A kind of marine fluid electricity generation system |
| JP2017123782A (en) * | 2017-04-18 | 2017-07-13 | アイチエレック株式会社 | Permanent magnet motor and compressor |
| GB2586329A (en) * | 2019-05-31 | 2021-02-17 | Magnix Usa Inc | High-torque electric motor assembly |
| GB2586329B (en) * | 2019-05-31 | 2022-04-13 | Magnix Usa Inc | High-torque electric motor assembly |
| GB2616525A (en) * | 2019-05-31 | 2023-09-13 | Magnix Usa Inc | High-torque electric motor assembly |
| GB2616525B (en) * | 2019-05-31 | 2024-01-31 | Magnix Usa Inc | High-torque electric motor assembly |
| CN111555492A (en) * | 2020-04-29 | 2020-08-18 | 南京航空航天大学 | Parallel-magnetizing small-rare-earth-combination local Halbach array high-speed permanent magnet motor |
| CN112653269A (en) * | 2020-11-19 | 2021-04-13 | 京马电机有限公司 | Rotor structure of high-power output motor |
| CN112350480A (en) * | 2020-12-14 | 2021-02-09 | 哈尔滨理工大学 | High-efficiency Halbach array permanent magnet synchronous motor |
| CN114123586A (en) * | 2021-11-22 | 2022-03-01 | 中国第一汽车股份有限公司 | Variable magnetic flux axial flux motor |
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Application publication date: 20140917 |