CN203339829U - Surface-mounted permanent magnet motor rotor magnetic pole structure - Google Patents
Surface-mounted permanent magnet motor rotor magnetic pole structure Download PDFInfo
- Publication number
- CN203339829U CN203339829U CN2013204549803U CN201320454980U CN203339829U CN 203339829 U CN203339829 U CN 203339829U CN 2013204549803 U CN2013204549803 U CN 2013204549803U CN 201320454980 U CN201320454980 U CN 201320454980U CN 203339829 U CN203339829 U CN 203339829U
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- Prior art keywords
- permanent magnet
- rotor core
- field structure
- magnetic pole
- permanent
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- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000696 magnetic material Substances 0.000 claims description 23
- 230000035699 permeability Effects 0.000 claims description 22
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 101100008049 Caenorhabditis elegans cut-5 gene Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a surface-mounted permanent magnet motor rotor magnetic pole structure which comprises a magnetic pole and a rotor core. The magnetic pole comprises permanent magnets, a fixed assembly and bolts. The fixed assembly is installed between the two permanent magnets and is tightly fixed on the surface of the rotor core through the bolts. The permanent magnets are uniformly distributed on the surface of the rotor core. According to the surface-mounted rotor magnetic pole structure of a permanent magnet motor, a permanent magnet material is saved, and harmonic content of an air-gap magnetic field is also reduced. Thus, the purposes of saving costs and decreasing vibration and noise are achieved.
Description
Technical field
The utility model is related to the magneto that permanent magnet mounting means is surface-mount type, more particularly to a kind of rotor magnetic pole structure for many pole permanent magnet motors that can realize low noiseization and low cost simultaneously.
Background technology
Compared with electro-magnetic motor, magneto has many advantages：When the high energy product of rare earth permanent-magnetic material causes same power output, main screw lift reduces 30%, and power output can increase to 50% during same volume, can saving copper winding consumption, reduction motor cost；But with make permanent magnet important source material --- rare earth material price it is unstable, controlling consumption of the permanent-magnet material weight in magneto becomes the important means of control cost, during it is the low-speed permanent-magnet motor of the relatively large direct drive of consumption of permanent magnet, or in the wind-driven generator of direct drive.
In conventional engineering practice, the processing to the permanent magnet two ends of the tile shape of surface-mount type is typically：It is whittled into certain suitable angle and then optimizes the air gap magnetic density waveform of motor, to reach the purpose of vibration and noise reducing, and is pushed down permanent magnet with using this angle；Generally, top rake is bigger, and air gap magnetic density waveform is better, but while the purpose of vibration and noise reducing is reached, wastes a certain amount of permanent magnet, while adding the processing cost of permanent magnet.And do not reduce the purpose of air gap flux density generally for reaching, it has to use high performance permanent-magnet material.
The content of the invention
The utility model overcomes shortcoming of the prior art and takes into account magnetic conduction and the fixation kit of fixing function there is provided a kind of, can export the magnetic flux of permanent magnet can fix again permanent magnet a kind of surface-mount type magneto rotor magnetic pole structure.
Above-mentioned purpose of the present utility model, is achieved through the following technical solutions：
A kind of field structure of surface-mounted permanent magnet machine rotor, including magnetic pole and rotor core, the magnetic pole includes permanent magnet, fixation kit and screw, and the fixation kit is arranged between two permanent magnets, rotor core surface is fastened on by screw, the permanent magnet is uniformly distributed in rotor core surface.
The field structure of above-mentioned surface-mounted permanent magnet machine rotor, described rotor core surface is polygon, permanent magnet and matching somebody with somebody for rotor core is combined into plane cooperation.
The field structure of above-mentioned surface-mounted permanent magnet machine rotor, described permanent magnet is trapezoid block.
Further, described trapezoid block, every two pieces of opposite polarity trapezoid block permanent magnets are formed by the permanent-magnet material cutting of a rectangular block.
Further, described fixation kit is made up of cover plate, liner plate and permeability magnetic material block.
Further, described cover plate and liner plate clamp permeability magnetic material block.
Further, the distance that the height of described permeability magnetic material block is higher by permanent magnet is the 1/3-1/2 of motor maximum air gap.
Further, described permeability magnetic material block has the hypotenuse angle being adapted with permanent magnet.
The utility model discloses a kind of surface-mounted rotor field structure of magneto, its rotor core outer surface is polygon, each pole of motor is by one piece of permanent magnet and fixation kit is constituted one by one, permanent magnet for rectangular block cut into it is trapezoidal, fixation kit is arranged between two permanent magnets, rotor core surface is fastened on by screw, fixation kit includes cover plate and liner plate, cover plate and liner plate clamp permeability magnetic material block, cover plate and liner plate are non-magnet material, the requirement of permeability magnetic material block is with the hypotenuse angle being adapted with permanent magnet, to play a part of fixed permanent magnet, the magnetic flux that permeability magnetic material block can export permanent magnet can fix permanent magnet again, permanent-magnet material can be lacked can reduce the harmonic content of air-gap field again, reach the purpose for saving cost and vibration and noise reducing.
Compared with prior art, the beneficial effects of the utility model are：Fixation kit is arranged between two permanent magnets, is fastened on rotor core surface by screw, and then ensure the even running of motor.
Brief description of the drawings
Fig. 1 is the utility model field structure schematic diagram；
Fig. 2 and Fig. 3 are the machining sketch charts of permanent magnet；
Fig. 4 is fixation kit structural representation；
Fig. 5 is the disassembly diagram of fixation kit；
Fig. 6 is the frequency analysis figure of the air gap magnetic density waveform for the field structure that rotor is generally installed using surface-mount type；
Fig. 7 is the frequency analysis figure of the air gap magnetic density waveform for the field structure that the utility model example is used；
Fig. 8 is plan of the present utility model；
In figure：Fixation kit 1, permanent magnet 2, rotor core 3, screw 4, line of cut 5, chamfering 6, magnetic pole 7, permeability magnetic material block a, cover plate b, liner plate c.
Embodiment
The technical solution of the utility model is described in detail with reference to embodiment and experimental example, and preferred embodiment described herein is merely to illustrate and explained the utility model, but protection domain not limited to this.
Embodiment：A kind of field structure of surface-mounted permanent magnet machine rotor, including magnetic pole 7 and rotor core 3, the magnetic pole 7 includes permanent magnet 2, fixation kit 1 and screw 4, the fixation kit is arranged between two permanent magnets 2, the surface of rotor core 3 is fastened on by screw 4, the permanent magnet 2 is uniformly distributed in the surface of rotor core 3.The surface of rotor core 3 is polygon, and permanent magnet 2 coordinates with rotor core 3 with plane is combined into.Permanent magnet 2 is trapezoid block.Described trapezoid block, every two pieces of opposite polarity trapezoid block permanent magnets are formed by the permanent-magnet material cutting of a rectangular block.Fixation kit 1 is made up of cover plate b, liner plate c and permeability magnetic material block a.Cover plate b and liner plate c is non-magnet material（Preferred material is aluminium alloy）.Permeability magnetic material block（Preferred material is No. 10 steel）.Cover plate b and liner plate c clamp permeability magnetic material block a.The distance that permeability magnetic material block a height is higher by permanent magnet 2 is the 1/3-1/2 of motor maximum air gap.Permeability magnetic material block a has the hypotenuse angle being adapted with permanent magnet.
Referring to Fig. 1 and Fig. 8, surface-mounted permanent magnet machine rotor of the present utility model, in order to solve the deficiency of the tile shape permanent magnet generally used, the shape of permanent magnet 2 is made into trapezoidal, it is evenly distributed in the surface of rotor core 3, and having made the surface of rotor core 3 into polygon, the faying face of permanent magnet 2 and rotor core 3 is changed into plane coordinates；Therefore the cooperation of permanent magnet 2 and rotor core 3 is improved.
Referring to Fig. 2 and Fig. 3, permanent magnet 2 of the present utility model is to be cut to form according to line of cut 5 by the permanent magnet of rectangular block, and two footing of rectangular block permanent magnet are cut into chamfering 6, does not result in the waste of permanent-magnet material, facilitates the fixation of permanent magnet.
In order to cost-effective, permanent magnet width is reduced, and two fixation kits are pushed down respectively on two trapezoidal hypotenuses of permanent magnet 2；In the present embodiment, for ease of more deriving the magnetic field of permanent magnet, fixation kit 1 is set to be higher by permanent magnet 2, the height being higher by most preferably 1mm；However, to ensure that the operation that magneto can be stablized, fixation kit 1 should not be close to diameter of stator bore.
During installation, the plane that suitable permanent magnet 2 is installed is found on the surface of rotor core 3 for having accomplished fluently screw first, is fixed with fixture, do not smear and water, then a fixation kit 1 is placed in the side of the permanent magnet 2 placed, is fixed, do not clamped with screw 4；Then permanent magnet 2 is extracted out, spreading glue, then inserted it into below just now fixed component 1, then the opposite side spreading glue of fixation kit 1 again, and paste the permanent magnet 2 of opposite polarity, is then fastened and fixed component 1, appeal step is repeated, all permanent magnets 2 and fixation kit 1 are placed and finished.
Failed to lay down when placing last block permanent magnet 2 or space is too big, all permanent magnets 2 and non-magnet_conductible material are adjusted；After adjustment is finished, unclamp one piece of permanent magnet 1, spreading glue, it is fixed, the fixation kit 1 on the both sides of permanent magnet 2 will be placed on original position, so spreading glue successively, all permanent magnets 2 are fixed successively, last each piece of permanent magnet 2 will be fixed on the position of needs, put after one day night, complete whole install.
Referring to Fig. 4 and Fig. 5, fixation kit 1 includes three parts, permeability magnetic material block a, the cover plate b and liner plate c of non-magnet material.Cover plate b and liner plate c, is fixed permeability magnetic material block a；Cover plate b and liner plate c clamp permeability magnetic material block a, cover plate b and liner plate c and are non-magnet material, and permeability magnetic material block a requirements are with the hypotenuse angle being adapted with permanent magnet 2, to play a part of fixed permanent magnet 2.Permeability magnetic material can use aluminum alloy materials with No. 10 steel, non-magnet material.
The utility model seminar will take the field structure of the surface-mounted permanent magnet machine rotor of embodiment to carry out contrast test with the field structure of common surface-mounted permanent magnet machine rotor, and harmonic amplitude is accounted for shown in the hundred-percent bar-chart as Fig. 6 and Fig. 7 of fundamental wave.
As a result show：The harmonic content of the air gap magnetic density waveform sent using the magnetic pole after the example of the utility model patent is substantially reduced, and fundamental voltage amplitude does not lose too much, and percent harmonic distortion is 2.85%, and fundamental voltage amplitude is 0.8438T；In addition; it is understood that the present embodiment is only schematically to be illustrated using 20 pole rotors, not the utility model is limited; the technical program can be used on the rotor of 22 poles or more multipole completely, and these changes and improvements are equally fallen into the scope of the utility model protection.The advantage of general principle of the present utility model and principal character and the technical program has been shown and described above.
It should be understood by those skilled in the art that; the technical program is not restricted to the described embodiments; simply illustrate principle of the present utility model described in above-described embodiment and specification; on the premise of the technical program spirit and scope are not departed from; the utility model also has various changes and modifications, and these changes and improvements are both fallen within the range of claimed the technical program.Scope is claimed by appending claims and its equivalent thereof in the utility model.
Claims (8)
1. a kind of field structure of surface-mounted permanent magnet machine rotor, including magnetic pole and rotor core, it is characterized in that, the magnetic pole includes permanent magnet, fixation kit and screw, the fixation kit is arranged between two permanent magnets, rotor core surface is fastened on by screw, the permanent magnet is uniformly distributed in rotor core surface.
2. field structure according to claim 1, it is characterized in that, described rotor core surface is polygon, permanent magnet and matching somebody with somebody for rotor core is combined into plane cooperation.
3. field structure according to claim 1, it is characterized in that, described permanent magnet is trapezoid block.
4. field structure according to claim 3, it is characterized in that, described trapezoid block, every two pieces of opposite polarity trapezoid block permanent magnets are formed by the permanent-magnet material cutting of a rectangular block.
5. field structure according to claim 1, it is characterized in that, described fixation kit is made up of cover plate, liner plate and permeability magnetic material block.
6. field structure according to claim 5, it is characterized in that, described cover plate and liner plate clamps permeability magnetic material block.
7. field structure according to claim 5, it is characterized in that, the height of described permeability magnetic material block is higher by 1/3-1/2 of the distance of permanent magnet for motor maximum air gap.
8. field structure according to claim 5, it is characterized in that, described permeability magnetic material block has the hypotenuse angle being adapted with permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204549803U CN203339829U (en) | 2013-07-29 | 2013-07-29 | Surface-mounted permanent magnet motor rotor magnetic pole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204549803U CN203339829U (en) | 2013-07-29 | 2013-07-29 | Surface-mounted permanent magnet motor rotor magnetic pole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203339829U true CN203339829U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204549803U Expired - Fee Related CN203339829U (en) | 2013-07-29 | 2013-07-29 | Surface-mounted permanent magnet motor rotor magnetic pole structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368299A (en) * | 2013-07-29 | 2013-10-23 | 山东奔速电梯有限公司 | Magnetic pole structure of surface-mounted type permanent magnet motor rotor |
| CN104779724A (en) * | 2015-04-29 | 2015-07-15 | 湘潭电机股份有限公司 | Surface-mounted permanent magnet motor rotor and motor |
| CN114498967A (en) * | 2022-01-17 | 2022-05-13 | 中车青岛四方机车车辆股份有限公司 | Permanent magnet fixing structure, permanent magnet fixing method, permanent magnet motor and vehicle |
-
2013
- 2013-07-29 CN CN2013204549803U patent/CN203339829U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368299A (en) * | 2013-07-29 | 2013-10-23 | 山东奔速电梯有限公司 | Magnetic pole structure of surface-mounted type permanent magnet motor rotor |
| CN104779724A (en) * | 2015-04-29 | 2015-07-15 | 湘潭电机股份有限公司 | Surface-mounted permanent magnet motor rotor and motor |
| CN114498967A (en) * | 2022-01-17 | 2022-05-13 | 中车青岛四方机车车辆股份有限公司 | Permanent magnet fixing structure, permanent magnet fixing method, permanent magnet motor and vehicle |
| CN114498967B (en) * | 2022-01-17 | 2024-02-20 | 中车青岛四方机车车辆股份有限公司 | Permanent magnet fixing structure, permanent magnet fixing method, permanent magnet motor and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 271100, Shandong, Laiwu Industrial Zone, north of the River Road, west of Levin Avenue Patentee after: SHANDONG BUNSE ELEVATOR Co.,Ltd. Address before: 271100, Shandong, Laiwu Industrial Zone, north of the River Road, west of Levin Avenue Patentee before: SHANDONG BUNSE ELEVATOR Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 |