CN2850109Y - AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array - Google Patents
AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array Download PDFInfo
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- CN2850109Y CN2850109Y CN 200520093393 CN200520093393U CN2850109Y CN 2850109 Y CN2850109 Y CN 2850109Y CN 200520093393 CN200520093393 CN 200520093393 CN 200520093393 U CN200520093393 U CN 200520093393U CN 2850109 Y CN2850109 Y CN 2850109Y
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Abstract
The utility model relates to an AC disk type iron core-less permanent-magnet synchronous motor based on a Halbach array, which forms a structure of double outer rotors. Magnetic steel disks are affixed to inner walls of the outer rotors and generate an axial magnetic field by a Halbach type permanent magnet array structure. A stator armature is directly formed by a winding in an injection moulding way through an iron core-less structure, and double rotors and the stator armature form bilateral air gaps. The Halbach type permanent magnet array can raise the magnetic thickness of the air gaps, besides, an air gas magnetic field with sinus distribution can be easily obtained. Besides, the Halbach type permanent magnet array reduces torque ripple and the magnetic flux of a yoke part. The magnetic thickness increase of the air gaps increases electromagnetic torque and raises motor output power. Owing to the decrease of the magnetic flux of the yoke part, the yoke part can be correspondingly used less or not used. Thus, the volume and the weight of the motor can be reduced. The motor of the utility model has the advantages of small axial size, light weight, low noise, small size, compact structure, no rotor magnetic hysteresis, no eddy current loss and high motor running efficiency. The utility model is suitable for thin installing occasions, particularly the occasion requiring the direct drive of large force moment.
Description
Technical field
The utility model relates to the motor technology field, is specifically related to the interchange Disk type Coreless Permanent Magnet Synchronous Motor based on the Halbach array.
Background technology
As modern high performance servomotor and big moment direct drive motor, disc type permasyn motor has obtained development rapidly at home and abroad in recent years.Along with the rise of high-tech products such as Digit Control Machine Tool, industrial robot, computer and the demand of some special applications systems, the servo-drive motor has been proposed the higher performance index and the requirement of slim installation, and disc type permasyn motor begins to replace step by step servomotor product traditionally.High-power, multifunction and microminiaturization are the directions of present magneto development, and high force-energy density and high efficiency are the common requirements that all kinds of Design of PM Motor are proposed.Consider that from index of permanent the magnetic loading of raising motor itself just increases the magnetic flux density in the motor gas-gap, so not only can reduce the volume of motor, can also put forward high force-energy density.In addition, in order to reduce the magnetic resistance of magnetic circuit, select for use the silicon steel plate stacking of high magnetic permeability to make iron core in the conventional motors, and existence unshakable in one's determination has caused problems such as motor volume is big, weight is big, loss is big, vibration noise is big.Use no or little silicon steel sheet if can utilize the excellent specific property of Nd-Fe-B permanent magnetic high-coercive force, make the coreless machine, not only motor weight can descend significantly, can also reduce vibration noise, and efficient also can improve simultaneously.Simultaneously, can also increase air gap flux density by selecting different magnet steel structure and arrangement mode.Rare earth permanent magnet has the characteristics of high residual flux density, high-coercive force and high energy product, can allow that made motor has bigger gas length and air gap flux density, thereby permanent magnet lay with magnetic structure design on very big flexibility is arranged, can make the planform different according to use occasion with conventional motors.
Summary of the invention
At the problem that the disc type permasyn motor prior art exists, the utility model provides a kind of interchange Disk type Coreless Permanent Magnet Synchronous Motor based on the Halbach array.
The disc type permasyn motor that is different from traditional structure based on the interchange Disk type Coreless Permanent Magnet Synchronous Motor of Halbach array of the present utility model.This motor is a motor in axial magnetic field, outer-rotor structure, birotor, rotor portion adopts Halbach type permanent magnet array, magnet steel directly is bonded on the external rotor inwall, the external rotor material is an aluminium alloy, and magnet steel and external rotor can rotate together during the motor operation, the eddy current loss of having avoided magnet steel and external rotor to move mutually and produce.Stator armature adopts no core construction, and is directly injection molded by winding.Armature adopts slotless not have core construction, can reduce the electromagnetic torque pulsation that is caused by slot effect, is not subjected to saturated influence, reduces the wastage, increases efficient, and alleviated quality.Simultaneously, two air gaps that birotor constitutes can overcome unilateral magnetic force, increase air gap flux density.
This motor stator, rotor equity are arranged, and stator winding has good radiating condition, can obtain very high power density.The moment of inertia of rotor is little, and electro mechanic time constant is little, peak torque and locked-rotor torque height, and torque/weight is big, low cruise is steady, has superior dynamic property.
From the angle of Design of PM Motor, the magnetic loading that improve motor itself just will increase the magnetic flux density in the motor gas-gap, so not only can reduce the volume of motor, can also put forward high force-energy density.The utility model adopts a kind of special magnet steel arrangement mode---Halbach type permanent magnet array, and the characteristics of utilizing the Halbach array to make a side magnetic field strengthen improve the air gap flux density in the motor.Motor permanent magnetic material of the present utility model adopts the Nd-Fe-B permanent magnetic with high-coercive force and high residual flux density, both sides magnet steel dish adopts Halbach type permanent magnet array structure, to radially lump together with tangential array junctions, synthetic result strengthens and the field weakening of another side magnetic field on one side.This array can improve air gap flux density on the one hand, can also obtain sinusoidal pattern distribution ground air-gap field in addition at an easy rate, reduces torque ripple, reduces yoke portion magnetic flux.Along with the increase that constitutes the every utmost point permanent magnet blocks of Halbach type permanent magnet array number, the trend of air-gap field waveform sineization is ideal more and more, this also just synchronous motor require to reach.The increase of air gap flux density simultaneously means the raising of exerting oneself of increase, the motor of electromagnetic torque, then can reduce armature supply when constant, reduce winding loss, improve electric efficiency keeping exerting oneself, because yoke portion magnetic flux reduces correspondingly to use less or without yoke portion, this can reduce the volume and weight of motor.And the air gap flux density of live part obviously strengthens after the employing Halbach type permanent magnet array structure, and the air gap flux density at back has also had significant decline.Under the identical situation of permanent magnet consumption, the air gap flux density of live part can increase by 30% after the employing Halbach type permanent magnet array structure, and the back air gap flux density can weaken 50%.As seen can improve air gap flux density effectively after adopting Halbach type permanent magnet array, thereby make the no iron core of motor become possibility.
Motor axial dimension of the present utility model is short, in light weight, noise is low, volume is little, compact conformation; Rotor does not have magnetic hysteresis, eddy current loss, motor operational efficiency height; Be suitable for slim installation occasion, for the occasion particularly suitable that requires big moment directly to drive; Product of the present utility model can be given full play to the abundant advantage of China's rare earth resources, the outlet of thinning soil resource is the outlet of high-performance AC permanent magnetic servo-motor and system thereof, with high performance rare-earth permanent-magnet electric machine improve join the performance of technical equipment, transform and lifting traditional mechanical industry, improve our competitiveness in the international market.
Description of drawings
Fig. 1 is the structural representation of the utility model based on the interchange Disk type Coreless Permanent Magnet Synchronous Motor of Halbach array.
Fig. 2 is a rotor permanent magnet array schematic diagram.
Fig. 3 is the Halbach type permanent magnet array schematic diagram that 2 90 ° of angles are arranged.
Fig. 4 is the Halbach type permanent magnet array schematic diagram that 3 60 ° of angles are arranged.
Fig. 5 is the Halbach type permanent magnet array schematic diagram that 4 45 degree are arranged.
Fig. 6 is the air-gap field magnetic line of force distribution comparison diagram of axial charging permanent magnet and Halbach type permanent magnet array structure.Wherein (a) is the air-gap field magnetic line of force distribution map of axial charging permanent magnet, (b) is the air-gap field magnetic line of force distribution map of Halbach type permanent magnet array structure permanent magnet.
Fig. 7 is the Halbach type permanent magnet array air-gap field oscillogram of different structure.Wherein (a) is two permanent magnet array air-gap fields of every utmost point oscillogram, (b) is three permanent magnet array air-gap fields of every utmost point oscillogram, (c) is four permanent magnet array air-gap fields of every utmost point oscillogram.
Embodiment
As shown in Figure 1, interchange Disk type Coreless Permanent Magnet Synchronous Motor based on the Halbach array of the present utility model comprises external rotor 1, stator armature 2, magnet steel dish 3, support 4, rotating shaft 5, stator lead 6, this motor is the double external rotor structure, external rotor 1 and rotating shaft 5 are connected by bearing, magnet steel dish 3 is bonded at the inwall of rotor 1, the Halbach type permanent magnet array structure that magnet steel dish 3 adopts as shown in Figure 2, produce axial magnetic field, stator armature 2 adopts no core construction, directly injection molded by winding, stator armature 2 is fixed in the rotating shaft 5 by support 4; Double external rotor 1 constitutes the bilateral air gap with stator armature 2.Stator lead 6 is passed by the center of rotating shaft 5.
Motor of the present utility model can adopt the Halbach type permanent magnet array of certain angle, promptly can adopt as Fig. 3, Fig. 4, shown in Figure 5 be respectively that 2 90 ° of angles are arranged, 3 60 ° of angles are arranged, 4 Halbach type permanent magnet arrays that the 45 degree is arranged.Shown in Figure 6 is the clear superiority (comparing with axial charging permanent magnet) of Halbach type permanent magnet array structure.The increase of every utmost point permanent magnet blocks number, the variation of air-gap field waveform sineization are respectively the air-gap field waveform of two permanent magnets of every utmost point, three permanent magnets of every utmost point, four permanent magnets of every utmost point as shown in Figure 7.
Claims (4)
1, based on the interchange Disk type Coreless Permanent Magnet Synchronous Motor of Halbach array, comprise external rotor, stator armature, rotating shaft, magnet steel dish, support, external rotor is the double external rotor structure, the magnet steel dish is bonded at the inwall of external rotor, and the magnet steel dish adopts Halbach type permanent magnet array structure, and external rotor is connected by bearing with rotating shaft, stator armature adopts no core construction, directly injection molded by winding, be fixed in the rotating shaft by support, double external rotor and stator armature constitute the bilateral air gap.
2, according to the described interchange Disk type Coreless Permanent Magnet Synchronous Motor of claim 1 based on the Halbach array, it is characterized in that the magnet steel dish adopts the Halbach type permanent magnet array of certain angle, promptly adopt 2 90 ° of angles arrangements, 3 60 ° of angles to arrange or 4 Halbach type permanent magnet arrays that the 45 degree is arranged.
3, according to the described interchange Disk type Coreless Permanent Magnet Synchronous Motor based on the Halbach array of claim 1, it is characterized in that external rotor with the aluminum alloy materials manufacturing, permanent magnet adopts Nd-Fe-Bo permanent magnet material.
4,, it is characterized in that the magnet steel dish produces axial magnetic field according to the described interchange Disk type Coreless Permanent Magnet Synchronous Motor of claim 1 based on the Halbach array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093393 CN2850109Y (en) | 2005-11-11 | 2005-11-11 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520093393 CN2850109Y (en) | 2005-11-11 | 2005-11-11 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
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| Publication Number | Publication Date |
|---|---|
| CN2850109Y true CN2850109Y (en) | 2006-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520093393 Expired - Fee Related CN2850109Y (en) | 2005-11-11 | 2005-11-11 | AC disk type iron core-less permanent-magnet synchronous motor based on Halbach array |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420160B (en) * | 2007-10-22 | 2010-11-24 | 沈阳工业大学 | Permanent magnet synchronous motor of sine pole width modulation |
| CN101931297A (en) * | 2009-06-27 | 2010-12-29 | 马善振 | Disk-type magneto generator of statorless iron core |
| CN108667253A (en) * | 2017-10-25 | 2018-10-16 | 王佳颖 | A kind of automotive disc wheel hub magneto and its mounting process |
| WO2018232578A1 (en) * | 2017-06-20 | 2018-12-27 | 宇生自然能源科技股份有限公司 | High-flux magnet set device |
| CN109301982A (en) * | 2018-10-22 | 2019-02-01 | 南京航空航天大学 | A kind of bimorph transducer smooth core axial magnetic field permanent magnet motor and flywheel integrated device |
| CN110048569A (en) * | 2019-04-10 | 2019-07-23 | 蚁人(苏州)机械科技有限公司 | The stator non iron-core servo motor of robot bilayer halbach array |
| CN110350748A (en) * | 2019-07-12 | 2019-10-18 | 上海大学 | A kind of axial flux permanent magnet synchronous motor based on Halbach magnet ring and molded package winding |
-
2005
- 2005-11-11 CN CN 200520093393 patent/CN2850109Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420160B (en) * | 2007-10-22 | 2010-11-24 | 沈阳工业大学 | Permanent magnet synchronous motor of sine pole width modulation |
| CN101931297A (en) * | 2009-06-27 | 2010-12-29 | 马善振 | Disk-type magneto generator of statorless iron core |
| WO2018232578A1 (en) * | 2017-06-20 | 2018-12-27 | 宇生自然能源科技股份有限公司 | High-flux magnet set device |
| CN108667253A (en) * | 2017-10-25 | 2018-10-16 | 王佳颖 | A kind of automotive disc wheel hub magneto and its mounting process |
| CN108667253B (en) * | 2017-10-25 | 2019-11-19 | 永康市杰创工业产品设计有限公司 | A kind of automotive disc wheel hub magneto and its mounting process |
| CN109301982A (en) * | 2018-10-22 | 2019-02-01 | 南京航空航天大学 | A kind of bimorph transducer smooth core axial magnetic field permanent magnet motor and flywheel integrated device |
| CN109301982B (en) * | 2018-10-22 | 2024-02-13 | 南京航空航天大学 | Double-stator slotless core axial magnetic field permanent magnet motor and flywheel integrated device |
| CN110048569A (en) * | 2019-04-10 | 2019-07-23 | 蚁人(苏州)机械科技有限公司 | The stator non iron-core servo motor of robot bilayer halbach array |
| CN110350748A (en) * | 2019-07-12 | 2019-10-18 | 上海大学 | A kind of axial flux permanent magnet synchronous motor based on Halbach magnet ring and molded package winding |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |