CN202513694U - Permanent magnet motor - Google Patents
Permanent magnet motor Download PDFInfo
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- CN202513694U CN202513694U CN 201120514555 CN201120514555U CN202513694U CN 202513694 U CN202513694 U CN 202513694U CN 201120514555 CN201120514555 CN 201120514555 CN 201120514555 U CN201120514555 U CN 201120514555U CN 202513694 U CN202513694 U CN 202513694U
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- steel
- ferrite magnetic
- iron core
- magnet steel
- magnetic steel
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Abstract
The utility model provides a permanent magnet motor. According to the utility model, the permanent magnet motor includes a stator and a rotor. The stator includes an iron core and a magnetic pole group. The magnetic pole group includes a plurality of magnetic poles distributed uniformly along the outer peripheral direction of the iron core. N poles and S poles of the magnetic poles are distributed in an alternating manner. Each of the magnetic poles includes a ferrite steel magnet and an NdFeB steel magnet. In the utility model, by adopting the mixed steel magnetic composed of the ferrite steel magnet and the NdFeB steel magnet to substitute a prior single ferrite steel magnet, the performance and the demagnetization resisting capacity of the permanent magnet motor are improved, and the range of operation torque is expanded.
Description
Technical field
The utility model relates to the magneto field, especially, relates to a kind of magneto.
Background technology
Permagnetic synchronous motor is applied to fields such as industry, commerical appliances, haulage vehicle, aviation more and more owing to have high efficiency, high output torque, high power density and good dynamic characteristics.Particularly needing motor to have the application of good weak magnetism speed expansion ability with the constant power speed range that satisfies broad, permagnetic synchronous motor more shows its distinct advantages.Because the ferrite magnetic steel price advantage is obvious, is widely used in the magneto.
In general, the structure of existing interior permanent magnet machines is as shown in Figure 1, and motor is made up of stator and rotor, and stator comprises ring-type yoke 10, plurality of teeth 20 and be wrapped in the winding 30 on the tooth.Rotor comprises the rotor core 40 and some magnet steel 50 that has the magnet steel groove, and some magnet steel 50 insert the rotor core 40 from circumferential end surfaces respectively, and along the circumferential direction alternately arranges with the N utmost point and the S utmost point.Magnet steel 50 is a ferrite magnetic steel.
Though ferrite magnetic steel has advantages such as price is low and corrosion-resistant, its magnetic energy product and coercive force are lower, so lower, the anti-demagnetization capability of motor performance is not enough, torque range is narrower.The rare-earth Nd-Fe-B magnet steel has the characteristic of high energy product and high-coercive force, be used for can effectively raising the efficiency on the magneto, anti-demagnetization capability etc., but because it costs an arm and a leg, the scope of application is narrower.
The utility model content
The utility model purpose is to provide a kind of magneto, to solve not enough, the narrower technical problem of torque range of lower, the anti-demagnetization capability of ferrite magnetic steel motor performance.
For realizing above-mentioned purpose, the utility model provides a kind of magneto, comprises stator and rotor, and rotor comprises: iron core; Magnetic pole set comprises along the excircle direction of iron core replacing equally distributed a plurality of magnetic pole with the N utmost point and the S utmost point that each magnetic pole comprises ferrite magnetic steel and Nd-Fe-B magnet steel.
Further, Nd-Fe-B magnet steel and ferrite magnetic steel connect.
Further, ferrite magnetic steel is the arc magnet steel to the center of circle of iron core direction protrusion, and Nd-Fe-B magnet steel is arranged on the position near the center of circle of iron core of ferrite magnetic steel.
Further, ferrite magnetic steel and Nd-Fe-B magnet steel are tangent.
Further, ferrite magnetic steel is the arc magnet steel to the center of circle of iron core direction protrusion, and the position near the center of circle of iron core of ferrite magnetic steel is provided with holding tank, and Nd-Fe-B magnet steel is arranged in the holding tank.
Further, ferrite magnetic steel is the arc magnet steel to the center of circle of iron core direction protrusion, and Nd-Fe-B magnet steel is arranged on the position away from the center of circle of iron core of ferrite magnetic steel.
Further, ferrite magnetic steel and Nd-Fe-B magnet steel are tangent.
Further, ferrite magnetic steel is the arc magnet steel to the center of circle of iron core direction protrusion, and the position away from the center of circle of iron core of ferrite magnetic steel is provided with holding tank, and Nd-Fe-B magnet steel is arranged in the holding tank.
Further, Nd-Fe-B magnet steel and ferrite magnetic steel with interval relative fixed in iron core on.
Further, Nd-Fe-B magnet steel is a cuboid.
The utlity model has following beneficial effect: the mixing magnet steel that adopts ferrite magnetic steel and Nd-Fe-B magnet steel to mix, replace original independent ferrite magnetic steel, improve the performance and the anti-demagnetization capability of magneto, expand the operation torque range.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the sketch map of the magneto vertical profile of prior art;
Fig. 2 is the shaft section cross-sectional schematic according to first preferred embodiment of the magneto of the utility model;
Fig. 3 is the shaft section cross-sectional schematic according to second preferred embodiment of the magneto of the utility model;
Fig. 4 is the shaft section cross-sectional schematic according to the 3rd preferred embodiment of the magneto of the utility model; And
Fig. 5 is according to the shaft section cross-sectional schematic of the 4th preferred embodiment that is the magneto of the utility model.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 2 to Fig. 5, the embodiment magneto according to the utility model comprises stator and rotor, and rotor comprises iron core 40; Magnetic pole set, magnetic pole set comprise along the excircle direction of iron core 40 and replace equally distributed a plurality of magnetic pole with the N utmost point and the S utmost point that each magnetic pole comprises ferrite magnetic steel 50 and Nd-Fe-B magnet steel 60.The mixing magnet steel that present embodiment adopts ferrite magnetic steel and Nd-Fe-B magnet steel to mix replaces original independent ferrite magnetic steel, improves the performance and the anti-demagnetization capability of magneto, expands the operation torque range.
Referring to Fig. 2 to Fig. 5, preferably, the Nd-Fe-B magnet steel 60 and the ferrite magnetic steel 50 of present embodiment connect.Nd-Fe-B magnet steel 60 is overlapped with the magnetic flux of ferrite magnetic steel 50, reach better effect.
Referring to Fig. 2, ferrite magnetic steel 50 is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the position near the center of circle of iron core 40 of ferrite magnetic steel 50.Ferrite magnetic steel 50 is tangent with Nd-Fe-B magnet steel 60.The ferrite magnetic steel 50 of first embodiment of the utility model is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the side near the center of circle of iron core 40 of ferrite magnetic steel 50, and is tangent with ferrite magnetic steel 50.
Referring to Fig. 4, ferrite magnetic steel 50 is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the position near the center of circle of iron core 40 of ferrite magnetic steel 50.The position near the center of circle of iron core 40 of ferrite magnetic steel 50 is provided with holding tank, and Nd-Fe-B magnet steel 60 is arranged in the holding tank.The ferrite magnetic steel 50 of second embodiment of the utility model is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and the side near the center of circle of iron core 40 of ferrite magnetic steel 50 is provided with holding tank, and Nd-Fe-B magnet steel 60 is arranged in the holding tank.
Referring to Fig. 3, ferrite magnetic steel 50 is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the position away from the center of circle of iron core 40 of ferrite magnetic steel 50.Ferrite magnetic steel 50 is tangent with Nd-Fe-B magnet steel 60.The ferrite magnetic steel 50 of the 3rd embodiment of the utility model is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the side away from the center of circle of iron core 40 of ferrite magnetic steel 50, and is tangent with ferrite magnetic steel 50.
Referring to Fig. 5, ferrite magnetic steel 50 is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and Nd-Fe-B magnet steel 60 is arranged on the position near the center of circle of iron core 40 of ferrite magnetic steel 50.The position away from the center of circle of iron core 40 of ferrite magnetic steel 50 is provided with holding tank, and Nd-Fe-B magnet steel 60 is arranged in the holding tank.The ferrite magnetic steel 50 of the 4th embodiment of the utility model is the arc magnet steel to the center of circle of iron core 40 direction protrusion, and the side away from the center of circle of iron core 40 of ferrite magnetic steel 50 is provided with holding tank, and Nd-Fe-B magnet steel 60 is arranged in the holding tank.
The Nd-Fe-B magnet steel 60 of present embodiment and ferrite magnetic steel 50 with interval relative fixed in iron core 40 on.That is to say and according to concrete demand Nd-Fe-B magnet steel 60 and ferrite magnetic steel to be arranged in 50 minutes.
Referring to Fig. 2 to Fig. 5, the Nd-Fe-B magnet steel 60 of present embodiment is a cuboid.The design of cuboid is production and processing for ease, can certainly adopt other shape.
From above description; Can find out; The utility model the above embodiments have realized following technique effect: the mixing magnet steel that adopts ferrite magnetic steel and Nd-Fe-B magnet steel to mix; Replace original independent ferrite magnetic steel, improve the performance and the anti-demagnetization capability of magneto, expand the operation torque range.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. a magneto comprises stator and rotor, it is characterized in that, said rotor comprises:
Iron core (40);
Magnetic pole set comprises along the excircle direction of said iron core (40) replacing equally distributed a plurality of magnetic pole with the N utmost point and the S utmost point that each said magnetic pole comprises ferrite magnetic steel (50) and Nd-Fe-B magnet steel (60).
2. magneto according to claim 1 is characterized in that, said Nd-Fe-B magnet steel (60) connects with said ferrite magnetic steel (50).
3. magneto according to claim 2; It is characterized in that; Said ferrite magnetic steel (50) is the arc magnet steel to the center of circle of said iron core (40) direction protrusion, and said Nd-Fe-B magnet steel (60) is arranged on the position near the center of circle of said iron core (40) of said ferrite magnetic steel (50).
4. magneto according to claim 3 is characterized in that, said ferrite magnetic steel (50) and said Nd-Fe-B magnet steel (60) are tangent.
5. magneto according to claim 3 is characterized in that, the position near the center of circle of said iron core (40) of said ferrite magnetic steel (50) is provided with holding tank, and said Nd-Fe-B magnet steel (60) is arranged in the said holding tank.
6. magneto according to claim 2; It is characterized in that; Said ferrite magnetic steel (50) is the arc magnet steel to the center of circle of said iron core (40) direction protrusion, and said Nd-Fe-B magnet steel (60) is arranged on the position away from the center of circle of said iron core (40) of said ferrite magnetic steel (50).
7. magneto according to claim 6 is characterized in that, said ferrite magnetic steel (50) and said Nd-Fe-B magnet steel (60) are tangent.
8. magneto according to claim 6 is characterized in that, the position away from the center of circle of said iron core (40) of said ferrite magnetic steel (50) is provided with holding tank, and said Nd-Fe-B magnet steel (60) is arranged in the said holding tank.
9. magneto according to claim 1 is characterized in that, said Nd-Fe-B magnet steel (60) and said ferrite magnetic steel (50) with interval relative fixed on described iron core (40).
10. according to each described magneto in the claim 1 to 9, it is characterized in that said Nd-Fe-B magnet steel (60) is a cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120514555 CN202513694U (en) | 2011-12-09 | 2011-12-09 | Permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120514555 CN202513694U (en) | 2011-12-09 | 2011-12-09 | Permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513694U true CN202513694U (en) | 2012-10-31 |
Family
ID=47066151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120514555 Expired - Lifetime CN202513694U (en) | 2011-12-09 | 2011-12-09 | Permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513694U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401329A (en) * | 2013-07-10 | 2013-11-20 | 中钢集团安徽天源科技股份有限公司 | Novel permanent-magnet motor rotor |
| CN103501067A (en) * | 2013-09-25 | 2014-01-08 | 广东美芝制冷设备有限公司 | Rotor of electromotor |
| CN112117846A (en) * | 2019-06-19 | 2020-12-22 | 上海海立电器有限公司 | Special-shaped permanent magnet structure of motor rotor and compressor |
| CN113346705A (en) * | 2021-06-11 | 2021-09-03 | 湖南大学 | Surface-mounted low-harmonic hybrid permanent magnet memory motor |
-
2011
- 2011-12-09 CN CN 201120514555 patent/CN202513694U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401329A (en) * | 2013-07-10 | 2013-11-20 | 中钢集团安徽天源科技股份有限公司 | Novel permanent-magnet motor rotor |
| CN103501067A (en) * | 2013-09-25 | 2014-01-08 | 广东美芝制冷设备有限公司 | Rotor of electromotor |
| CN103501067B (en) * | 2013-09-25 | 2016-10-12 | 广东美芝制冷设备有限公司 | The rotor of motor |
| CN112117846A (en) * | 2019-06-19 | 2020-12-22 | 上海海立电器有限公司 | Special-shaped permanent magnet structure of motor rotor and compressor |
| CN113346705A (en) * | 2021-06-11 | 2021-09-03 | 湖南大学 | Surface-mounted low-harmonic hybrid permanent magnet memory motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
|
| CX01 | Expiry of patent term |