CN103904852B - A kind of magnet structure outer rotor disc type motor - Google Patents
A kind of magnet structure outer rotor disc type motor Download PDFInfo
- Publication number
- CN103904852B CN103904852B CN201410155417.5A CN201410155417A CN103904852B CN 103904852 B CN103904852 B CN 103904852B CN 201410155417 A CN201410155417 A CN 201410155417A CN 103904852 B CN103904852 B CN 103904852B
- Authority
- CN
- China
- Prior art keywords
- permanent magnets
- rotor
- permanent
- magnet
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of magnet structure outer rotor disc type motor, relates to machine field, is specifically related to disk type electric motor rotor field.Solve existing permanent magnet disk type coreless synchronous electric motor rotor and adopt uniform thickness permanent magnet array, the relation wasting material to a certain extent He main pole cannot be utilized to match with auxiliary magnetic pole, make the problem that air gap magnetic density waveform is tending towards sinusoidal.It comprises a pair rotor, and described rotor is cirque structure, and is fixedly connected with by N number of set of permanent magnets head and the tail and forms, and a pair rotor mirror symmetry centered by wedge shape winding dish is arranged, and the air gap side of each rotor is planar structure; Each set of permanent magnets is arranged in order by 8 pieces of permanent magnets and forms, and 8 pieces of permanent magnets are respectively 1 to No. 8 permanent magnet, and the axial cross section of 8 pieces of permanent magnets is fan-shaped; The axial cross section of No. 1 and No. 5 permanent magnet is rectangle, and the axial cross section of even numbers permanent magnet is trapezoidal, and the axial cross section of 3 and No. 7 permanent magnets is rectangle, and it is applied in machine field.
Description
Technical field
The present invention relates to machine field, be specifically related to disk type electric motor rotor field.
Background technology
At present, rare earth permanent magnet disc style motor is a kind of New-type electric machine developed, and is different from the radial structure of traditional round pillar motor, and disc-type permanent magnet motor is axial-flux electric machine, and its structure is simple, reliable, volume is little, quality is light, loss is little, efficiency is high.Its most significant advantage is that motor adopts permanent magnet excitation, and rotor is lossless, and motor operational efficiency is high, and due to the arrangement of rotor equity, stator winding has good radiating condition, can obtain very high power density.The moment of inertia of this rotor is little in addition, and electro mechanic time constant is little, peak torque and locked-rotor torque high, torque/weight ratio is large, and low cruise is steady, has superior dynamic property.Utilize the excellent specific property of Nd-Fe-B permanent magnetic high-coercive force to make non iron-core motor, not only motor weight can significantly decline, and vibration, noise reduces greatly.But in the face of energy crisis; the reasonable employment of Nd-Fe-Bo permanent magnet material seems particularly important; existing permanent magnet disk type coreless rotor mostly adopts uniform thickness permanent magnet array; the special mode of magnetizing is adopted to make air gap magnetic density waveform be tending towards sinusoidal; but have ignored coordinating of main pole and auxiliary magnetic pole, waste material to a certain extent.
Summary of the invention
The present invention adopts uniform thickness permanent magnet array to solve existing permanent magnet disk type coreless synchronous electric motor rotor, the relation wasting material to a certain extent and main pole cannot be utilized to match with auxiliary magnetic pole, the problem making air gap magnetic density waveform be tending towards sinusoidal, the invention provides a kind of magnet structure outer rotor disc type motor.
A kind of magnet structure outer rotor disc type motor, it comprises a pair rotor, and described rotor is cirque structure, and is fixedly connected with by N number of set of permanent magnets head and the tail and forms, and described N is positive integer; A pair rotor mirror symmetry centered by wedge shape winding dish is arranged, and the air gap side of each rotor is planar structure;
Each set of permanent magnets is arranged in order by 8 pieces of permanent magnets and forms, 8 pieces of permanent magnets are respectively No. 1 permanent magnet, No. 2 permanent magnets, No. 3 permanent magnets, No. 4 permanent magnets, No. 5 permanent magnets, No. 6 permanent magnets, No. 7 permanent magnets, No. 8 permanent magnets, and the axial cross section of described 8 pieces of permanent magnets is fan-shaped;
No. 1 described permanent magnet is identical with the structure of No. 5 permanent magnets, and the axial cross section of No. 1 permanent magnet is rectangle, and the height of this rectangle is h1 millimeter, width is α 1 millimeter;
No. 2 permanent magnets, No. 4 permanent magnets, No. 6 permanent magnets are identical with the structure of No. 8 permanent magnets, and the axial cross section of No. 2 permanent magnets is trapezoidal, and this trapezoidal upper base is h2 millimeter, goes to the bottom as h1 millimeter, height are α 3 millimeters;
No. 3 permanent magnets are identical with the structure of No. 7 permanent magnets, and the axial cross section of No. 3 permanent magnets is rectangle, and the height of this rectangle is h2 millimeter, width is α 2 millimeters;
Wherein, α 1> α 3> α 2, h1>h2.
Described α 1=α 2+2.1, α 3=α 2+1.05, h1=h2+2.
Described N is 8.
The magnetizing direction of No. 1 described permanent magnet magnetizes vertically, and the magnetizing direction being arranged in two pieces of identical No. 1 permanent magnets of two rotor positions is identical, and the magnetizing direction of one of them rotor No. i-th permanent magnet differs 45 degree in the counterclockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, the magnetizing direction of No. i-th permanent magnet of another rotor differs 45 degree along clockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, i=2,3,4,5,6,7,8.
The beneficial effect that the present invention brings is, No. 1 permanent magnet and No. 5 permanent magnets are as main pole, and all the other permanent magnets are auxiliary magnetic pole, because auxiliary magnetic pole has compensating action to main pole, flat-top or the shape of a saddle can be there is in air-gap field waveform according to the contribution of auxiliary magnetic pole, reduce thickness and the width of auxiliary magnetic pole, then can change its contribution to magnetic field, improve air-gap field waveform further, improve electric efficiency, compared with being the motor of h1 with same size rotor permanent magnet body thickness, electric efficiency improves 4.64%
Auxiliary magnetic pole No. 2 permanent magnets, No. 4 permanent magnets, No. 6 permanent magnets and No. 8 permanent magnets do in echelon by the present invention, reduce the thickness of auxiliary magnetic pole No. 3 permanent magnets and No. 7 permanent magnets simultaneously, can reach and make the air gap magnetic density waveform in magnetic field be tending towards sinusoidal wave, and improve air gap flux density amplitude to a certain extent, compared with being the motor of h1 with same size rotor permanent magnet body thickness, air gap flux density amplitude improves 3.5%, effectively attenuates harmonic content in air-gap field simultaneously, especially make 3 subharmonic amplitudes reduce 16.99%.
The present invention adopts rotor permanent magnet body structure that is not wide, not uniform thickness, and compared with being the motor of h1 with same size rotor permanent magnet body thickness, permanent magnetic material saves 16.67% and saved the energy; Rotor of the present invention is compared with traditional Halbach permanent magnet array, more meaningful in disk type coreless synchronous machine application aspect.
Accompanying drawing explanation
Fig. 1 is the integrally-built cutaway view of a kind of magnet structure outer rotor disc type motor of the present invention, wherein, Reference numeral 9 represents end-cap assembly, Reference numeral 10 represents rotor, Reference numeral 11 represents wedge shape winding dish, Reference numeral 12 represents bearing, and Reference numeral 13 represents key, and Reference numeral 14 represents axle;
Fig. 2 is the permanent magnet layout viewing of the rotor of a kind of magnet structure outer rotor disc type motor described in embodiment one;
The horizontal spreading schematic diagram of 8 permanent magnets of one group of set of permanent magnets on the rotor that Fig. 3 is a pair one-tenth mirror symmetry setting described in embodiment one.
Embodiment
Embodiment one: present embodiment is described see Fig. 1,2 and 3, a kind of magnet structure outer rotor disc type motor described in present embodiment, it comprises a pair rotor, described rotor is cirque structure, and be fixedly connected with by N number of set of permanent magnets head and the tail and form, described N is positive integer; A pair rotor mirror symmetry centered by wedge shape winding dish is arranged, and the air gap side of each rotor is planar structure;
Each set of permanent magnets is arranged in order by 8 pieces of permanent magnets and forms, 8 pieces of permanent magnets are respectively No. 1 permanent magnet 1, No. 2 permanent magnets 2, No. 3 permanent magnets 3, No. 4 permanent magnets 4, No. 5 permanent magnets 5, No. 6 permanent magnets 6, No. 7 permanent magnets 7, No. 8 permanent magnets 8, and the axial cross section of described 8 pieces of permanent magnets is fan-shaped;
No. 1 described permanent magnet 1 is identical with the structure of No. 5 permanent magnets 5, and the axial cross section of No. 1 permanent magnet 1 is rectangle, and the height of this rectangle is h1 millimeter, width is α 1 millimeter;
No. 2 permanent magnets 2, No. 4 permanent magnets 4, No. 6 permanent magnets 6 are identical with the structure of No. 8 permanent magnets 8, and the axial cross section of No. 2 permanent magnets 2 is trapezoidal, and this trapezoidal upper base is h2 millimeter, goes to the bottom as h1 millimeter, height are α 3 millimeters;
No. 3 permanent magnets 3 are identical with the structure of No. 7 permanent magnets 7, and the axial cross section of No. 3 permanent magnets 3 is rectangle, and the height of this rectangle is h2 millimeter, width is α 2 millimeters;
Wherein, α 1> α 3> α 2, h1>h2.
In present embodiment, No. 1 permanent magnet 1 and No. 5 permanent magnets 5 are as main pole, and all the other permanent magnets are auxiliary magnetic pole, because auxiliary magnetic pole has compensating action to main pole, flat-top or the shape of a saddle can be there is in air-gap field waveform according to the contribution of auxiliary magnetic pole, reduce the thickness of auxiliary magnetic pole and width, then can change its contribution to magnetic field, improve air-gap field waveform further.
Auxiliary magnetic pole No. 2 permanent magnets 2, No. 4 permanent magnets 4, No. 6 permanent magnets 6, No. 8 permanent magnets 8 do in echelon by present embodiment, reduce the thickness of auxiliary magnetic pole No. 3 permanent magnets 3 and No. 7 permanent magnets 7 simultaneously, can reach and make air-gap field sineization, and improve air gap flux density amplitude to a certain extent, effectively attenuates harmonic content in air-gap field simultaneously;
The cutaway view of the permanent magnet disk type coreless synchronous machine described in present embodiment is shown in Figure 1, and in the course of the work, be wedge shape winding dish in the middle of a pair rotor, wedge shape winding is motor stator to this motor; Form wedged air gap structure between two disc rotor motors, the wedged air gap of formation can ensure that the conductor duty ratio at rotor inside and outside footpath place is consistent.
Embodiment two: the difference of present embodiment and a kind of magnet structure outer rotor disc type motor described in embodiment one is, described α 1=α 2+2.1, α 3=α 2+1.05, h1=h2+2.
Embodiment three: the difference of present embodiment and a kind of magnet structure outer rotor disc type motor described in embodiment two is, described N is 8.
Embodiment four: present embodiment and embodiment one, the difference of a kind of magnet structure outer rotor disc type motor described in two or three is, the magnetizing direction of No. 1 described permanent magnet 1 magnetizes vertically, and the magnetizing direction being arranged in two pieces of identical No. 1 permanent magnets 1 of two rotor positions is identical, and the magnetizing direction of one of them rotor No. i-th permanent magnet differs 45 degree in the counterclockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, the magnetizing direction of No. i-th permanent magnet of another rotor differs 45 degree along clockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, i=2, 3, 4, 5, 6, 7, 8.
In present embodiment, the magnetizing direction of the magnetizing direction of the magnetizing direction of the magnetizing direction of No. 1 permanent magnet 1 of such as one of them rotor to be the magnetizing direction of 90 degree, No. 2 permanent magnets 2 be 135 degree, No. 3 permanent magnets 3 to be the magnetizing direction of 180 degree, No. 4 permanent magnets 4 be 225 degree, No. 5 permanent magnets 5 to be the magnetizing direction of 270 degree, No. 6 permanent magnets 6 be 315 degree, No. 7 permanent magnets 7 is the magnetizing direction of 0 degree, No. 8 permanent magnet 8 is 45 degree;
Then, the magnetizing direction of the magnetizing direction of the magnetizing direction of the magnetizing direction of No. 1 permanent magnet 1 of another rotor to be the magnetizing direction of 90 degree, No. 2 permanent magnets 2 be 45 degree, No. 3 permanent magnets 3 to be the magnetizing direction of 0 degree, No. 4 permanent magnet 4 be 315 degree, No. 5 permanent magnets 5 to be the magnetizing direction of 270 degree, No. 6 permanent magnets 6 be 225 degree, No. 7 permanent magnets 7 is the magnetizing direction of 180 degree, No. 8 permanent magnets 8 is 135 degree.
Claims (4)
1. a magnet structure outer rotor disc type motor, is characterized in that, it comprises a pair rotor, and described rotor is cirque structure, and is fixedly connected with by N number of set of permanent magnets head and the tail and forms, and described N is positive integer; A pair rotor mirror symmetry centered by wedge shape winding dish is arranged, and the air gap side of each rotor is planar structure;
Each set of permanent magnets is arranged in order by 8 pieces of permanent magnets and forms, 8 pieces of permanent magnets are respectively No. 1 permanent magnet (1), No. 2 permanent magnets (2), No. 3 permanent magnets (3), No. 4 permanent magnets (4), No. 5 permanent magnets (5), No. 6 permanent magnets (6), No. 7 permanent magnets (7), No. 8 permanent magnets (8), and the axial cross section of described 8 pieces of permanent magnets is fan-shaped;
No. 1 described permanent magnet (1) is identical with the structure of No. 5 permanent magnets (5), and the axial longitudinal section of No. 1 permanent magnet (1) is rectangle, and the height of this rectangle is h1 millimeter, width is α 1 millimeter;
No. 2 permanent magnets (2), No. 4 permanent magnets (4), No. 6 permanent magnets (6) are identical with the structure of No. 8 permanent magnets (8), and the axial longitudinal section of No. 2 permanent magnets (2) is trapezoidal, this trapezoidal upper base is h2 millimeter, goes to the bottom as h1 millimeter, height are α 3 millimeters;
No. 3 permanent magnets (3) are identical with the structure of No. 7 permanent magnets (7), and the axial longitudinal section of No. 3 permanent magnets (3) is rectangle, and the height of this rectangle is h2 millimeter, width is α 2 millimeters;
Wherein, α 1> α 3> α 2, h1>h2.
2. a kind of magnet structure outer rotor disc type motor according to claim 1, is characterized in that, described α 1=α 2+2.1, α 3=α 2+1.05, h1=h2+2.
3. a kind of magnet structure outer rotor disc type motor according to claim 2, is characterized in that, described N is 8.
4. according to claim 1, a kind of magnet structure outer rotor disc type motor described in 2 or 3, it is characterized in that, the magnetizing direction of No. 1 described permanent magnet (1) magnetizes vertically, and the magnetizing direction being arranged in two pieces No. 1 identical permanent magnet (1) of two rotor positions is identical, and the magnetizing direction of one of them rotor No. i-th permanent magnet differs 45 degree in the counterclockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, the magnetizing direction of No. i-th permanent magnet of another rotor differs 45 degree along clockwise direction with the magnetizing direction of the i-th-No. 1 permanent magnet, i=2, 3, 4, 5, 6, 7, 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155417.5A CN103904852B (en) | 2014-04-17 | 2014-04-17 | A kind of magnet structure outer rotor disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155417.5A CN103904852B (en) | 2014-04-17 | 2014-04-17 | A kind of magnet structure outer rotor disc type motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103904852A CN103904852A (en) | 2014-07-02 |
| CN103904852B true CN103904852B (en) | 2016-01-20 |
Family
ID=50996040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410155417.5A Active CN103904852B (en) | 2014-04-17 | 2014-04-17 | A kind of magnet structure outer rotor disc type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103904852B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319919A (en) * | 2014-09-30 | 2015-01-28 | 洛阳市施凯信机电科技有限公司 | Motor for sewing machine |
| GB2534196B (en) * | 2015-01-16 | 2017-06-14 | Yasa Motors Ltd | Axial flux machine |
| FR3045233B1 (en) * | 2015-12-10 | 2019-01-25 | Whylot | ROTOR OF AN AXIAL FLUX ELECTROMAGNETIC MOTOR HAS AT LEAST ONE WAVED FORM MAGNET |
| CN109462318A (en) * | 2018-11-06 | 2019-03-12 | 东南大学 | A kind of magnet structure axial stator iron-core less motor |
| CN111030401A (en) * | 2019-12-18 | 2020-04-17 | 苏州英磁新能源科技有限公司 | Disc type full-superconducting motor |
| CN111404350B (en) * | 2020-02-19 | 2022-05-13 | 哈尔滨工业大学 | Non-equal-height two-dimensional chamfering Halbach permanent magnet array suitable for planar motor |
| CN111917264A (en) * | 2020-08-03 | 2020-11-10 | 深圳市恒驱电机股份有限公司 | Ultrathin axial motor stator structure with stamping back plate and disc motor |
| CN112234779B (en) * | 2020-10-13 | 2022-02-08 | 山东省科学院自动化研究所 | Motor production method and system based on variable-thickness Halbach permanent magnet array |
| CN112735731B (en) * | 2020-12-11 | 2023-09-08 | 山东省科学院自动化研究所 | Method for mounting Halbach permanent magnet array with irregular cross section and unequal thickness |
| CN116197780B (en) * | 2023-04-14 | 2023-09-26 | 佳木斯电机股份有限公司 | Permanent magnet processing equipment for permanent magnet synchronous motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396138A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - flux |
| CN203761235U (en) * | 2014-04-17 | 2014-08-06 | 哈尔滨理工大学 | Novel permanent-magnet structure outer-rotor disc-type motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008259359A (en) * | 2007-04-06 | 2008-10-23 | Toshiba Corp | Outer rotor permanent magnet motor |
-
2014
- 2014-04-17 CN CN201410155417.5A patent/CN103904852B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396138A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - flux |
| CN203761235U (en) * | 2014-04-17 | 2014-08-06 | 哈尔滨理工大学 | Novel permanent-magnet structure outer-rotor disc-type motor |
Non-Patent Citations (1)
| Title |
|---|
| 《基于 Halbach 阵列盘式无铁心永磁同步电机的研究》;王晓远;《中国优秀硕士学位论文全文数据库》;20061231;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103904852A (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103904852B (en) | A kind of magnet structure outer rotor disc type motor | |
| CN103219814B (en) | Asynchronous starting permanent magnet synchronous motor rotor based on permanent magnets with different residual magnetic densities | |
| CN104485762A (en) | Rotor of permanent magnet synchronous motor and permanent magnet synchronous motor provided with same | |
| CN102185458B (en) | High-precision slotless permanent magnet motor | |
| CN104767338B (en) | A kind of square angle approach type magneto | |
| CN105990922B (en) | Rotor and tangential permanent magnet synchronous motor with same | |
| CN203289210U (en) | A mixed excitation-type stator surface mounting-type double-salient-pole motor | |
| CN104836398A (en) | Rotor magnetic concentrating double-stator transverse magnetic field permanent magnet synchronous motor | |
| CN201499065U (en) | Single-stator and double-rotor variable magnetic flow permanent magnet brushless motor | |
| CN107959367B (en) | Double-stator hybrid excitation vortex damping device | |
| CN108282065A (en) | High efficiency, high power density Halbach array brshless DC motor | |
| CN105429423B (en) | Bilateral long secondary primary permanent magnet type field modulation linear electric motors used for oil extractor | |
| CN102594086A (en) | High-power density permanent magnet motor | |
| CN102222995A (en) | Permanent magnet motor stator rotor structure for compressor | |
| CN203761235U (en) | Novel permanent-magnet structure outer-rotor disc-type motor | |
| CN202513694U (en) | Permanent magnet motor | |
| CN105305769B (en) | A kind of salient pole fluting permanent magnet array and linear motor | |
| CN110943557A (en) | Halbach array permanent magnet synchronous motor | |
| CN105846627A (en) | Rotor structure for improving permanent magnet motor power and torque density | |
| CN103915971B (en) | There is the three-dimensional magnetic flux permanent-magnetism linear motor of many air gaps independent winding structure | |
| CN206620033U (en) | A kind of permanent-magnet synchronous electric motor for compressor | |
| CN105305684A (en) | Permanent magnetic motor for reducing polar-frequency radial electromagnetic exciting force and slot-frequency radial electromagnetic exciting force | |
| CN205195521U (en) | Permanent magnet synchronous motor rotor and motor | |
| CN201393164Y (en) | Switching reluctance motor | |
| CN103532272B (en) | Brushless, permanently excited direct current motor rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181122 Address after: 163000 Business Service Center A Business uniform 1028, Olin International Apartment Business District G, Jeanhu Road District, Daqing City, Heilongjiang Province Patentee after: DAQING HAOWEI PETROLEUM TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 150080 52 Xuefu Road, Nangang District, Harbin, Heilongjiang. Patentee before: Harbin University of Science and Technology |
|
| TR01 | Transfer of patent right |