CN203984204U - A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes - Google Patents
A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes Download PDFInfo
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- CN203984204U CN203984204U CN201420309144.0U CN201420309144U CN203984204U CN 203984204 U CN203984204 U CN 203984204U CN 201420309144 U CN201420309144 U CN 201420309144U CN 203984204 U CN203984204 U CN 203984204U
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Abstract
The utility model discloses a kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes, this motor is a kind of external magnetic field Halbach fault tolerant permanent magnet machine.Stator is made up of stator core and the centralized winding of individual layer.Rotor comprises external magnetic field Halbach array and stainless sleeve, and the Nd-Fe-Bo permanent magnet material of diametrical magnetization and tangential magnetized ferrite permanent-magnet materials form Halbach permanent magnet array alternately; Sleeve set, in Halabch permanent magnet array outside, is used for reinforcing the mechanical robustness of permanent magnetic material and enhancing rotor.This mixing magnetic material Halbach fault tolerant permanent magnet machine, owing to having used ferrite permanent-magnet materials, has reduced the consumption of rare earth permanent-magnetic material, has reduced the manufacturing cost of motor, has opened up wide prospect for mixing the application of magnetic material in Halbach magneto.
Description
Technical field
The utility model relates to a kind of permagnetic synchronous motor, refers 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 utility model proposes a kind of high reliability Halbach fault tolerant permanent magnet machine that mixes magnetic material.
Utility model content
The purpose of this utility model has been 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 utility model has been 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 adopted in the utility model 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 beneficial effects of the utility model are:
Mixing magnetic material Halbach fault tolerant permanent magnet machine of the present utility model 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 the utility model structure diagram;
Fig. 2 is the magnetizing direction of ferrite and neodymium iron boron;
Fig. 3 is the back-emf contrast of the utility model and traditional rare earth Halbach magneto;
Fig. 4 is the harmonic analysis of the back-emf of the utility model 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 utility model 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 utility model 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 utility model 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
| Project | Mix magnetic material motor | Existing NdFeB material motor |
| Ferrite volume (mm 3) | 228.1 | - |
| Neodymium iron boron volume (mm 3) | 912.3 | 989.6 |
| Neodymium iron boron usage ratio | 90% | 100% |
| Back-emf amplitude (V) | 1.43 | 1.47 |
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 utility model, not in order to limit the utility model.All any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
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 |
|---|---|---|---|
| CN201420309144.0U CN203984204U (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420309144.0U CN203984204U (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes |
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| CN203984204U true CN203984204U (en) | 2014-12-03 |
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| CN201420309144.0U Expired - Fee Related CN203984204U (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic material Halbach fault tolerant permanent magnet machine that mixes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN112350480A (en) * | 2020-12-14 | 2021-02-09 | 哈尔滨理工大学 | High-efficiency Halbach array permanent magnet synchronous motor |
-
2014
- 2014-06-12 CN CN201420309144.0U patent/CN203984204U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811614A (en) * | 2016-03-17 | 2016-07-27 | 重庆大学 | Rotor structure for high speed permanent magnet synchronous machine |
| CN112350480A (en) * | 2020-12-14 | 2021-02-09 | 哈尔滨理工大学 | High-efficiency Halbach array permanent magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |