CN102904404A - Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor - Google Patents
Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor Download PDFInfo
- Publication number
- CN102904404A CN102904404A CN2012102868293A CN201210286829A CN102904404A CN 102904404 A CN102904404 A CN 102904404A CN 2012102868293 A CN2012102868293 A CN 2012102868293A CN 201210286829 A CN201210286829 A CN 201210286829A CN 102904404 A CN102904404 A CN 102904404A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- halbach
- core
- magnetic field
- 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.)
- Pending
Links
- 239000000696 magnetic material Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 12
- 238000009826 distribution Methods 0.000 abstract description 6
- 230000037250 Clearance Effects 0.000 abstract 1
- 230000035512 clearance Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001360 synchronised Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000004083 survival Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses a Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor which comprises a stator iron-core-free armature disc, a permanent magnet, a rotor disc, a shaft, a bearing and a rotor outer shell, wherein two symmetrical rotor discs are arranged at two sides of the stator iron-core-free armature disc; the stator iron-core-free armature disc and the rotor disc are installed on the shaft; the shaft is installed in the rotor outer shell through the bearing; the permanent magnet is pasted on the rotor disc, and is pasted on the inner surface of the rotor outer shell; a Halbach magnet structure with axial magnetizing and tangential magnetizing is adopted for the permanent magnet, and an enclosed magnetic circuit is formed automatically; and a soft magnetic material is placed at the middle of the permanent magnet with tangential magnetizing. According to the invention, on the basis that more permanent magnets are not used, flux density with great air clearance can be obtained, and are is in sine distribution; the output torque is high; the torque density is large; the efficiency is high; the structure is simple; the assembly is simple; and the Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor is suitable for relevant driving occasions with compact structures for electric automobile hub motors and the like.
Description
Technical field
The present invention relates to the motor technology field, be specifically related to a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure.
Background technology
Environmental pollution and energy shortage are the major issues of the world today, concerning the improvement of environment for human survival.Be accompanied by the rapidly development of automotive society, the environmental problems such as CO2 emission in the environmental problem such as the atmosphere polluting problem in the city scope and the CO2 emission in the global range and the global range have caused people's extensive concern.In order to address the above problem, the automobile of research and development energy-saving and environmental protection and safety is the only way of realizing sustainable development.Wherein, electric automobile enjoys attention with its low Hazardous, high fuel economy, high efficiency and for the advantage of the aspects such as flexibility of travelling.In the electric automobile field, adopt wheel hub motor Direct Driving System structural shape day by day to become developing direction, wheel hub motor progressively becomes the study hotspot in electric automobile field.Different from the electric vehicle structure of traditional single motor centralized driving, directly drive and exactly motor is directly installed in the wheel, a motor in taking turns, each is housed, be called wheel hub motor, the direct drive of wheel driving automobile travels.The major advantage of this structure is to have cancelled gear box and mechanical differential device, has reduced the assembly of drive chain, thereby has reduced the weight of whole drive chain, improves reliability and the efficient of whole system.Yet owing to having cancelled gear, the torque of live axle all will be produced by motor, and the volume and weight of motor can increase.Therefore the straight main challenge of drive system is to make little that the volume and weight that is installed in the wheel hub motor in the wheel tries one's best, and should carry out balance between volume, weight and the power of motor.
In view of characteristics and the requirement of wheel hub motor itself, axial magnetic field coreless permanent magnet synchronous motor is one and well selects.Axial magnetic field coreless permanent magnet synchronous motor is also arranged in the prior art, and it can reduce motor quality, eliminates cogging torque and core loss, but its stator adopts after the non iron-core, because it is large that effective air gap becomes, air gap flux density is not high, thereby the torque density that causes motor is lower.
In order to improve air gap flux density, adopt the magneto of Halbach type array permanent magnet to be employed gradually.Existing axial magnetic field coreless permanent magnet motor based on the Halbach structure, in order to obtain the air gap flux density of Sine distribution, Halbach array permanent magnet magnetizing direction must be various, certainly will improve like this manufacturing cost of permanent magnet, thereby increase the cost of whole motor, reduced cost performance.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art, provide that a kind of permanent magnet consumption is few, cost is low, lightweight, high without iron loss, efficient, and air gap flux density increases greatly, the axial magnetic field coreless permanent magnet brushless DC motor of the Halbach magnet structure of waveform Sine distribution.
The technical solution used in the present invention is: a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure comprises stator coreless armature dish, permanent magnet, rotor disk, axle, bearing and rotor case;
The both sides of described stator coreless armature dish are provided with two symmetric rotor dishes, stator coreless armature dish and rotor disk are installed on the axle, axle is installed in the rotor case by bearing, is pasted with permanent magnet on the described rotor disk, and permanent magnet sticks on the inner surface of rotor case;
Described permanent magnet adopts the Halbach magnet structure of axial charging and cutting orientation magnetizing, can form voluntarily closed magnetic circuit, saved rotor back iron, alleviate rotor weight, place soft magnetic material in the middle of the permanent magnet of described cutting orientation magnetizing, at the air gap flux density that guarantees to produce Sine distribution, do not weaken under the prerequisite of air gap flux density, can reduce the permanent magnet consumption, reduce the motor manufacturing cost, each magnetic pole is made of four parts on each rotor disk: the permanent magnet of axial charging, the permanent magnet of soft magnetic material and two cutting orientation magnetizings.
As preferably, described stator coreless armature dish adopts non-overlapped concentrated winding type, and the winding termination portion is shorter, and consumption is few, and copper loss is few, and this kind winding type simple structure, and is easy to process.
As preferably, described rotor case is made of the nonmagnetic substance of high mechanical properties.
As preferably, described permanent magnet is selected the NdFeB material of high energy product.
Stator of the present invention adopts the non iron-core structure, can eliminate cogging torque and core loss, eliminates the axial magnetic between the rotor, and is easy to assembly.By selecting suitable rotor permanent magnet material, soft magnetic material size and suitable riding position, can produce the field waveform of Sine distribution, the reduced harmonic component.
The axial magnetic field non iron-core brushless DC motor of a kind of Halbach magnet structure that the present invention proposes, this motor is the improvement to existing Halbach structure magneto, the Halbach permanent magnet array only adopts the magnet of axial charging and cutting orientation magnetizing both direction, in the middle of the magnet of two cutting orientation magnetizings, add soft magnetic material, guaranteeing to reduce the permanent magnet consumption on the certain basis of air gap flux density size, reduce the motor cost, alleviate rotor weight, thereby improve the torque density of motor.By selecting suitable permanent magnetic material, soft magnetic material size and their riding position, also can improve the sine of air gap flux density, the reduced harmonic component.
Beneficial effect of the present invention: 1) stator disc adopts the non iron-core structure, has eliminated cogging torque and core loss, has improved electric efficiency, has alleviated motor quality; 2) the magnet steel dish adopts axially and the Halbach permanent magnet array that tangentially combines, and has saved rotor back iron, has alleviated rotor quality, has also improved air gap flux density, thereby has improved motor output torque, the torque density increase; 3) in the middle of the permanent magnet of adjacent two cutting orientation magnetizings, embed soft magnetic material, reduced the Nd-Fe-B permanent magnet consumption of high price, reduced motor cost; 4) by reasonable arrangement permanent magnetic material and soft magnetic material size with and the position, on the basis that does not increase the permanent magnetic material consumption, can obtain at an easy rate the air gap flux density of Sine distribution, reduced harmonic reduces torque ripple.
Description of drawings
Fig. 1 is the structural representation of motor embodiment of the present invention;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is the expanded view of mean radius of the present invention place internal structure of motor.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
As illustrated in fig. 1 and 2, a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure comprises stator coreless armature dish 1, permanent magnet 2, rotor disk 3, axle 5, bearing 4 and rotor case 6; The both sides of described stator coreless armature dish 1 are provided with two symmetric rotor dishes 3, stator coreless armature dish 1 and rotor disk 3 are installed on the axle 5, axle 5 is installed in the rotor case 6 by bearing 4, is pasted with permanent magnet 2 on the described rotor disk 3, and permanent magnet 2 sticks on the inner surface of rotor case 6; Described permanent magnet 2 adopts the Halbach magnet structure of axial charging 7 and cutting orientation magnetizing 8, forms voluntarily closed magnetic circuit, places soft magnetic materials 9 in the middle of the permanent magnet 2 of cutting orientation magnetizing 8.As shown in Figure 3, each magnetic pole is made of four parts on each rotor disk 3: the permanent magnet of an axial charging 7, permanent magnet and a soft magnetic material 9 of two 90 degree cutting orientation magnetizings 8.On same rotor disk, permanent magnet 7N, the S of axial charging are separated by, magnetic flux vertically, by axial charging N utmost point permanent magnet-cutting orientation magnetizing permanent magnet, soft magnetic material-axial charging S utmost point permanent magnet-air gap-axial charging S utmost point permanent magnet-cutting orientation magnetizing permanent magnet, soft magnetic material-axial charging N utmost point permanent magnet on the axial charging N utmost point permanent magnet 7-air gap on the magnet steel dish-stator coreless armature dish 1-another magnet steel dish, so form a closed-loop path, need not rotor back iron and consist of closed magnetic circuit.
Described stator coreless armature dish 1 adopts non-overlapped concentrated winding type, directly directly injection molded by non-overlapped concentrated winding, this winding type has advantages of that termination portion is short, easy to process, A, B, the symmetrical placement of C three phase windings on the stator, be provided with lead-out wire, in order to apply three-phase alternating current.Described rotor case 6 is made of the nonmagnetic substance of high mechanical properties, and described permanent magnet 2 is selected the NdFeB material of high energy product.
Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.In the present embodiment not clear and definite each part all available prior art realized.
Claims (4)
1. the non iron-core axial magnetic field brushless DC motor based on the Halbach structure is characterized in that: comprise stator coreless armature dish, permanent magnet, rotor disk, axle, bearing and rotor case;
The both sides of described stator coreless armature dish are provided with two symmetric rotor dishes, stator coreless armature dish and rotor disk are installed on the axle, axle is installed in the rotor case by bearing, is pasted with permanent magnet on the described rotor disk, and permanent magnet sticks on the inner surface of rotor case;
Described permanent magnet adopts the Halbach magnet structure of axial charging and cutting orientation magnetizing, form voluntarily closed magnetic circuit, place soft magnetic material in the middle of the permanent magnet of described cutting orientation magnetizing, each magnetic pole is made of four parts on each rotor disk: the permanent magnet of axial charging, the permanent magnet of soft magnetic material and two cutting orientation magnetizings.
2. a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure according to claim 1, it is characterized in that: described stator coreless armature dish adopts non-overlapped concentrated winding type.
3. a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure according to claim 1, it is characterized in that: described rotor case is made of the nonmagnetic substance of high mechanical properties.
4. a kind of non iron-core axial magnetic field brushless DC motor based on the Halbach structure according to claim 1, it is characterized in that: described permanent magnet is selected the NdFeB material of high energy product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102868293A CN102904404A (en) | 2012-08-13 | 2012-08-13 | Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102868293A CN102904404A (en) | 2012-08-13 | 2012-08-13 | Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102904404A true CN102904404A (en) | 2013-01-30 |
Family
ID=47576497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102868293A Pending CN102904404A (en) | 2012-08-13 | 2012-08-13 | Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102904404A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| CN104052221A (en) * | 2014-06-12 | 2014-09-17 | 江苏大学 | Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials |
| CN104167893A (en) * | 2013-05-17 | 2014-11-26 | 胡宪文 | Axial direction magnetic flux type electric generator |
| CN105958687A (en) * | 2016-04-27 | 2016-09-21 | 霍勇贤 | Coreless permanent magnet motor inner rotor capable of magnetic congregate effect and manufacturing method thereof |
| GB2538515A (en) * | 2015-05-19 | 2016-11-23 | Greenspur Renewables Ltd | Generator |
| CN104868671B (en) * | 2015-05-12 | 2018-04-03 | 北京航空航天大学 | A kind of coaxial two section Halbach permanent magnetism synchronous micromotors based on MEMS technology |
| KR20210013899A (en) * | 2019-07-29 | 2021-02-08 | 한양대학교 산학협력단 | Rotor for maximizing air-gap magnetic flux in slotless motor and slotless motor including the same |
| CN112688514A (en) * | 2020-12-29 | 2021-04-20 | 福州大学 | Permanent magnet motor with permanent magnet stator and coreless axial magnetic field |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN101728912A (en) * | 2010-02-04 | 2010-06-09 | 天津大学 | Disk-type permanent magnet synchronous motor used for electric automobile hub based on Halbach structure |
| CN101958583A (en) * | 2009-07-17 | 2011-01-26 | 株式会社安川电机 | Periodic magnetic field generation device and use its linear motor, rotary-type motor |
| CN201947136U (en) * | 2011-03-11 | 2011-08-24 | 珠海格力电器股份有限公司 | Axial air gap motor |
-
2012
- 2012-08-13 CN CN2012102868293A patent/CN102904404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN101958583A (en) * | 2009-07-17 | 2011-01-26 | 株式会社安川电机 | Periodic magnetic field generation device and use its linear motor, rotary-type motor |
| CN101728912A (en) * | 2010-02-04 | 2010-06-09 | 天津大学 | Disk-type permanent magnet synchronous motor used for electric automobile hub based on Halbach structure |
| CN201947136U (en) * | 2011-03-11 | 2011-08-24 | 珠海格力电器股份有限公司 | Axial air gap motor |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167893A (en) * | 2013-05-17 | 2014-11-26 | 胡宪文 | Axial direction magnetic flux type electric generator |
| CN104167893B (en) * | 2013-05-17 | 2018-11-02 | 胡宪文 | Axial flux generator |
| CN103414301B (en) * | 2013-08-15 | 2016-05-25 | 南京信息工程大学 | A kind of axial magnetic field coreless permanent magnet motor of pin-connected panel magnetic pole |
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
| CN104052221A (en) * | 2014-06-12 | 2014-09-17 | 江苏大学 | Halbach permanent magnetic fault-tolerant motor made from mixed magnetic materials |
| CN104868671B (en) * | 2015-05-12 | 2018-04-03 | 北京航空航天大学 | A kind of coaxial two section Halbach permanent magnetism synchronous micromotors based on MEMS technology |
| US10637338B2 (en) | 2015-05-19 | 2020-04-28 | Time To Act Limited | Rotor for permanent magnet generator |
| GB2538515A (en) * | 2015-05-19 | 2016-11-23 | Greenspur Renewables Ltd | Generator |
| CN107980195A (en) * | 2015-05-19 | 2018-05-01 | 格林斯普可再生能源有限公司 | The improved rotor for permanent magnet generator |
| GB2538515B (en) * | 2015-05-19 | 2021-09-29 | Time To Act Ltd | Improved rotor for permanent magnet generator |
| CN105958687A (en) * | 2016-04-27 | 2016-09-21 | 霍勇贤 | Coreless permanent magnet motor inner rotor capable of magnetic congregate effect and manufacturing method thereof |
| CN105958687B (en) * | 2016-04-27 | 2020-02-14 | 霍勇贤 | Coreless permanent magnet motor inner rotor with magnetism gathering effect and manufacturing method thereof |
| KR20210013899A (en) * | 2019-07-29 | 2021-02-08 | 한양대학교 산학협력단 | Rotor for maximizing air-gap magnetic flux in slotless motor and slotless motor including the same |
| KR102242638B1 (en) | 2019-07-29 | 2021-04-20 | 한양대학교 산학협력단 | Rotor for maximizing air-gap magnetic flux in slotless motor and slotless motor including the same |
| CN112688514A (en) * | 2020-12-29 | 2021-04-20 | 福州大学 | Permanent magnet motor with permanent magnet stator and coreless axial magnetic field |
| CN112688514B (en) * | 2020-12-29 | 2022-03-11 | 福州大学 | Permanent magnet motor with permanent magnet stator and coreless axial magnetic field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102904404A (en) | Halbach-structure-based iron-core-free axial magnetic field brushless direct-current electromotor | |
| CN101662193A (en) | Two-rotor axial magnetic flux switching type mixed excitation synchronous generator | |
| CN103490532B (en) | A kind of error-tolerance type stator partition type Magneticflux-switching type memory electrical machine | |
| CN109194082B (en) | Amorphous alloy axial flux motor with wide field weakening speed expansion and low rotor loss | |
| CN203289210U (en) | A mixed excitation-type stator surface mounting-type double-salient-pole motor | |
| CN102035275A (en) | Hybrid excitation brushless claw-pole motor | |
| CN101123386B (en) | Tangential-set magnet permanent synchronization motor | |
| CN103248148A (en) | Mixed excitation stator surface-mounted double-salient motor | |
| CN107579637A (en) | A kind of axial radial flux magneto | |
| CN201549999U (en) | Axial flux switching type hybrid excitation synchronous generator | |
| CN101267131B (en) | A three-division mixed magnetic pole excitation single-armature brushless generator | |
| CN105914981B (en) | A kind of electric vehicle composite excitation wheel hub motor | |
| CN103248189A (en) | Bipolar stator-surface-mounting type permanent magnet motor | |
| CN107846092A (en) | A kind of wheel hub electric motor of electric vehicle of integrated caliper | |
| CN104506005A (en) | Wheel hub type permanent magnet motor of electric car | |
| CN201378761Y (en) | Constant-voltage output mixing excitation type magnetic flux switching wind power generator | |
| CN102593974A (en) | Hybrid excitation switched flux motor | |
| CN203788059U (en) | Parallel-type hybrid magnet motor | |
| CN102738992A (en) | Assembled mixed excitation generator | |
| CN104723818A (en) | Linear motor shock absorber used for automobile in-wheel active suspension | |
| CN203119729U (en) | Wide-range-speed-control doubly salient hybrid excitation machine | |
| CN101488682A (en) | Constant voltage outputting mixed excitation type magnetic flux switching wind power generator | |
| CN103779991A (en) | Parallel type hybrid magnetic material motor | |
| CN106341013A (en) | Permanent magnet-magnetic resistance radial magnetic-flux compound double-rotor motor | |
| Fu et al. | A novel axial-flux electric machine for in-wheel gearless drive in plug-in hybrid electric vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130130 |