CN104141685A - Driving and driven inner rotor magnetic bearing - Google Patents
Driving and driven inner rotor magnetic bearing Download PDFInfo
- Publication number
- CN104141685A CN104141685A CN201410382274.1A CN201410382274A CN104141685A CN 104141685 A CN104141685 A CN 104141685A CN 201410382274 A CN201410382274 A CN 201410382274A CN 104141685 A CN104141685 A CN 104141685A
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- stator
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- internal rotor
- guiding loop
- passive part
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000725 suspension Substances 0.000 description 10
- 230000004323 axial length Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
A driving and driven inner rotor magnetic bearing comprises U-shaped driven part inner rotor magnetic rings, inner rotor magnets, inner rotor iron cores, air gaps, stator iron cores, stator magnetic rings, stator permanent magnets, coils, U-shaped driven part stator magnetic rings and driven part air gaps. Each stator iron core is composed of four magnetic poles which form magnetic poles in the positive and negative directions of an X axis and magnetic poles in the positive and negative directions of a Y axis respectively, gaps are reserved between the outer surfaces of the inner rotor iron cores and the inner surfaces of the stator iron cores to form the air gaps, the U-shaped driven part stator magnetic rings are located between the two stator iron cores, the two stator permanent magnets are disposed between the stator iron cores and the stator permanent magnets, and the driven part air gaps are formed between the outer surfaces of the U-shaped driven part inner rotor magnetic rings and the inner surfaces of the U-shaped driven part stator magnetic rings. The magnetic bearing improves output torque precision of a magnetically suspended control moment gyro and reduces the size.
Description
Technical field
The present invention relates to the moving internal rotor magnetic bearing of a kind of non-contact magnetically suspension bearing, particularly a kind of main quilt, can be used as the contactless support of the rotary components such as single frame control-moment gyro and two framework control-moment gyros for space.
Background technique
Magnetic suspension bearing divides pure electromagnetic type and permanent magnet bias to add the hybrid magnetic suspension bearing of Electromagnetic Control, the former uses electric current large, power consumption is large, permanent magnet bias adds the hybrid magnetic suspension bearing of Electromagnetic Control, utilize the bias current in permanent magnet instead of pure electromagnetism magnetic bearing to produce bias magnetic field, main bearing capacity is born in the magnetic field that permanent magnet produces, electromagnetism magnetic field provides auxiliary adjusting bearing capacity, thereby this bearing can reduce to control electric current greatly, there is the loss that reduces power amplifier, reduce magnetic bearing Number of ampere turns, dwindle magnetic bearing volume, improve the advantages such as bearing load carrying capacity, therefore permanent magnet biased magnetic bearing is at magnetic suspension motor, high speed flywheel system, the high-speed motion occasion of the magnetic suspension bearings such as control-moment gyro system is widely used.Magnetic suspension control torque gyroscope adopts magnetic bearing supporting for space, owing to having overcome the problems such as the friction of conventional mechanical bearings control-moment gyro and unbalance vibration, therefore can realize higher rotating speed, longer life-span and higher output torque precision.Existing magnetic suspension control torque gyroscope is in order to improve output torque size, conventionally adopt the full magnetic bearing configuration initiatively of five degree of freedom, but the magnetic suspension control torque gyroscope of this structure is owing to adopting electric current to realize the control of output torque, therefore power consumption is large, volume is large, complex circuit, although and with the two-freedom magnetic suspension control torque gyroscope of passive magnetic bearing output torque, can volume do very little, therefore but because passive magnetic bearing is uncontrollable, have that damping is low, the defect of poor stability.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of main quilt to move internal rotor magnetic bearing, to reduce own vol weight and power consumption.
Technical solution of the present invention is: a kind of main quilt is moved internal rotor magnetic bearing, by U-shaped passive part internal rotor magnetic guiding loop, internal rotor magnet case, internal rotor is unshakable in one's determination, air gap, stator core, stator magnetic guiding loop, stator permanent magnet, coil, U-shaped passive part stator magnetic guiding loop and passive part air gap form, wherein each stator core is comprised of 4 magnetic poles, two stator cores form 8, upper and lower two ends of magnetic bearing magnetic pole, form respectively X, the magnetic pole of the positive negative direction of Y-axis, on the magnetic pole of each stator core, be wound with coil, stator core inside is that internal rotor is unshakable in one's determination, internal rotor inside unshakable in one's determination is internal rotor magnet case, internal rotor outer surface unshakable in one's determination and stator core internal surface leave certain gap, form air gap, the radially outer of stator core is stator magnetic guiding loop, a U-shaped passive part stator magnetic guiding loop is between two stator cores, between stator core and U-shaped passive part stator magnetic guiding loop, there are two stator permanent magnets, the inner radial of U-shaped passive part stator magnetic guiding loop is U-shaped passive part internal rotor magnetic guiding loop, between the internal surface of the outer surface of U-shaped passive part internal rotor magnetic guiding loop and U-shaped passive part stator magnetic guiding loop, leave certain interval, form passive part air gap.
The magnetic pole of each described stator core is wound with coil for controlling separately.
Each described stator permanent magnet is axial annulus, magnetizes vertically, and magnetizing direction is contrary, and volume equates.
The magnetic pole of described stator core adopts pole shoe form.
Described U-shaped passive part internal rotor magnetic guiding loop and U-shaped passive part stator magnetic guiding loop are two teeth, three teeth or four teeth.
The principle of such scheme is: main quilt is moved internal rotor magnetic bearing, by the electric current in each coil of independent control, that is to say, " controlling separately " electric current referring in each coil does not contact directly, that the detection air gap variation detecting according to displacement transducer by power amplifier is switched on to each magnetic pole of the stator coil, realize the radially translation of magnetic bearing rotating part and radially twisting, the stator magnetic guiding loop of the U-shaped passive part in the middle of utilizing and the magnetic biasing pulling force that U-shaped passive part internal rotor magnetic guiding loop produces by axial displacement are realized the axial translation of magnetic bearing rotating part.Stator permanent magnet provides permanent magnet bias magnetic field to magnetic bearing, bears the suffered radial force of magnetic bearing, and the magnetic field that coil produces plays regulatory role, and is used for changing every power of extremely descending magnetic field, keeps magnetic bearing rotor air gap even, and makes rotor obtain contactless support.Permanent magnetic circuit of the present invention is two parts (as shown in Figure 3), a part is: magnetic flux is from the upper end stator permanent magnet N utmost point, the tooth by stator magnetic guiding loop, upper end stator core, upper end air gap, upper end internal rotor iron core, upper end internal rotor magnet case, upper end U-shaped passive part internal rotor magnetic guiding loop, upper end passive part air gap, the tooth of upper end U-shaped passive part stator magnetic guiding loop, the S utmost point that stator magnetic guiding loop is got back to upper end stator permanent magnet; Second portion is: magnetic flux is from the lower end stator permanent magnet N utmost point, the tooth by stator magnetic guiding loop, lower end stator core, lower end air gap, lower end internal rotor iron core, lower end internal rotor magnet case, lower end U-shaped passive part internal rotor magnetic guiding loop, lower end passive part air gap, the tooth of lower end U-shaped passive part stator magnetic guiding loop, the S utmost point that stator magnetic guiding loop is got back to lower end stator permanent magnet; As shown in Figure 2, the magnetic flux that certain end Y-axis postive direction coil current produces of take is example, its path is: the Y-axis postive direction magnetic pole that stator core forms, Y-axis postive direction air gap other three direction magnetic poles unshakable in one's determination to internal rotor, that then form to other three direction air gaps, stator core, the Y-axis postive direction magnetic pole of getting back to stator core formation, formation closed-loop path.
The present invention's advantage is compared with prior art: the present invention utilizes stator core that radial force and the moment of four-degree-of-freedom are provided, and control accuracy is high, and axially translational degree of freedom is passive realization, and low in energy consumption, volume is little; In addition, axial passive part of the present invention is domain structure, and magnetic fluctuation is little, and rotation power consumption is little.
Accompanying drawing explanation
Fig. 1 is the moving internal rotor magnetic bearing axial sectional view of main quilt of the present invention;
Fig. 2 is the moving internal rotor magnetic bearing axial end view drawing of main quilt of the present invention;
Fig. 3 is the permanent magnetic circuit figure of the moving internal rotor magnetic bearing of main quilt of the present invention;
Fig. 4 is the moving internal rotor magnetic bearing axial sectional view of main quilt that U-shaped passive part internal rotor magnetic guiding loop of the present invention and passive part stator magnetic guiding loop are three teeth.
Embodiment
As shown in Figure 1, a kind of main quilt is moved internal rotor magnetic bearing, by U-shaped passive part internal rotor magnetic guiding loop 1, internal rotor magnet case 3, internal rotor iron core 4, air gap 5, stator core 6, stator magnetic guiding loop 7, stator permanent magnet 8, coil 9, U-shaped passive part stator magnetic guiding loop 10 and passive part air gap 2 form, wherein each stator core 6 is comprised of 4 magnetic poles, two stator cores 6 form 8, upper and lower two ends of magnetic bearing magnetic pole, form respectively X, the magnetic pole of the positive negative direction of Y-axis, on the magnetic pole of each stator core 6, be wound with coil 9, stator core 6 inside are internal rotor iron core 4, internal rotor 4 inside unshakable in one's determination are internal rotor magnet case 3, internal rotor 4 outer surfaces unshakable in one's determination and stator core 6 internal surfaces leave certain gap, form air gap 5, the radially outer of stator core 6 is stator magnetic guiding loop 7, a U-shaped passive part stator magnetic guiding loop 10 is between two stator cores 6, between stator core 6 and U-shaped passive part stator magnetic guiding loop 10, there are two stator permanent magnets 8, the inner radial of U-shaped passive part stator magnetic guiding loop 10 is U-shaped passive part internal rotor magnetic guiding loop 1, between the internal surface of the outer surface of U-shaped passive part internal rotor magnetic guiding loop 1 and U-shaped passive part stator magnetic guiding loop 7, leave certain interval, form passive part air gap 2.
The magnetic pole of each described stator core 6 is wound with coil 9 for controlling separately, to realize the radially translation of magnetic bearing rotating part, control and radially reverse and control, realize magnetic bearing rotating part and control and control (totally four degrees of freedom) around two torsional freedoms of x and y direction along two translational degree of freedom of x and y direction.
Described U-shaped passive part internal rotor magnetic guiding loop 1 and U-shaped passive part stator magnetic guiding loop 10 are made by solid domain permeability magnetic material, realize axially stable (being that axial translational degree of freedom is passive) of magnetic bearing by the axial dislocation of U-shaped passive part internal rotor magnetic guiding loop 1 and U-shaped passive part stator magnetic guiding loop 10.
In order to increase the rigidity of passive part, described U-shaped passive part internal rotor magnetic guiding loop 1 and the tooth of U-shaped passive part stator magnetic guiding loop 10 are two, three or four, when tooth is two, are " U-shaped "; When tooth is three teeth, be " E shape tooth " that the tooth that wherein Fig. 4 has provided U-shaped passive part internal rotor magnetic guiding loop and U-shaped passive part stator magnetic guiding loop is the main passive magnetic bearing sectional view of internal rotor of three.
In addition, additional displacement negative stiffness active part being brought in order to reduce passive part, the magnetic resistance of described passive part air gap 2 is 2～4 times of air gap 5 magnetic resistance.
It should be noted that, if the present invention utilize the passive part stator magnetic guiding loop of intermediate portion and passive part internal rotor magnetic guiding loop provide passive axial translation power and x to and y to radially warping force, the stator core of active part only provides the radially translation power of x direction and y direction, and magnetic bearing of the present invention just becomes two-freedom magnetic bearing.
The invention described above technological scheme U-shaped passive part internal rotor magnetic guiding loop 1, internal rotor magnet case 3, stator magnetic guiding loop 7 and U-shaped passive part stator magnetic guiding loop 10 used is solid construction, adopt the good material of magnetic property to make, as magnetic materials such as electrical pure iron, various carbon steel, cast iron, cast steel, alloyed steel, 1J50 and 1J79 etc.Stator core 6 and internal rotor iron core 4 can form as the magnetic material punching presses such as electrical pure iron, electrical steel plate DR510, DR470, DW350,1J50 and 1J79 fold with the good material of magnetic property.The material of stator permanent magnet 8 is rare-earth permanent magnet, Nd-Fe-B permanent magnet or the ferrite permanent magnet that magnetic property is good, and stator permanent magnet 8 is axial annulus, magnetizes vertically, and the magnetizing direction of two stator permanent magnets 8 is contrary, and volume equates; After coil 9 adopts the good electromagnetic wire coiling of conduction, paint-dipping drying forms.In addition, the magnetic field that the magnetic field producing due to permanent magnet produces in rotor core by stator core magnetic pole is size variation, therefore when rotating, rotor high-speed can produce eddy current loss, for reducing this part loss, the magnetic pole of stator core 6 should be on the basis shown in Fig. 2, at magnetic pole of the stator place, adopt pole shoe form, with the eddy current loss under reducing at a high speed.
In addition, as preferred version, reduce the leakage field between passive part rotor magnetic guiding loop, in U-shaped passive part internal rotor magnetic guiding loop 1 and U-shaped passive part stator magnetic guiding loop 10, the axial length of U-groove bevel is designed to internal rotor magnetic guiding loop 1 or stator magnetic guiding loop 10 axial lengths 4 times; In order to reduce the leakage field of stator permanent magnet, the axial distance between U-shaped passive part stator magnetic guiding loop 10 and stator core 6 is 3 times of stator core 6 axial lengths simultaneously.
The content not being described in detail in specification of the present invention belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. a main quilt is moved internal rotor magnetic bearing, it is characterized in that: by U-shaped passive part internal rotor magnetic guiding loop (1), internal rotor magnet case (3), internal rotor (4) unshakable in one's determination, air gap (5), stator core (6), stator magnetic guiding loop (7), stator permanent magnet (8), coil (9), U-shaped passive part stator magnetic guiding loop (10) and passive part air gap (2) form, wherein each stator core (6) is comprised of 4 magnetic poles, two stator cores (6) form 8, upper and lower two ends of magnetic bearing magnetic pole, form respectively X, the magnetic pole of the positive negative direction of Y-axis, on the magnetic pole of each stator core (6), be wound with coil (9), stator core (6) inside is internal rotor (4) unshakable in one's determination, internal rotor (4) inside unshakable in one's determination is internal rotor magnet case (3), internal rotor (4) outer surface unshakable in one's determination and stator core (6) internal surface leave certain gap, form air gap (5), the radially outer of stator core (6) is stator magnetic guiding loop (7), a U-shaped passive part stator magnetic guiding loop (10) is positioned between two stator cores (6), between stator core (6) and U-shaped passive part stator magnetic guiding loop (10), there are two stator permanent magnets (8), the inner radial of U-shaped passive part stator magnetic guiding loop (10) is U-shaped passive part internal rotor magnetic guiding loop (1), between the internal surface of the outer surface of U-shaped passive part internal rotor magnetic guiding loop (1) and U-shaped passive part stator magnetic guiding loop (7), leave certain interval, form passive part air gap (2).
2. the moving internal rotor magnetic bearing of main quilt according to claim 1, is characterized in that: the magnetic pole of described each stator core (6) is wound with coil (9) for controlling separately.
3. the moving internal rotor magnetic bearing of main quilt according to claim 1, it is characterized in that: described two stator permanent magnets (8) are axial annulus, magnetize vertically, and magnetizing direction is contrary, and volume equates.
4. the moving internal rotor magnetic bearing of main quilt according to claim 1, is characterized in that: described U-shaped passive part internal rotor magnetic guiding loop (1) and U-shaped passive part stator magnetic guiding loop (10) are two teeth, three teeth or four teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382274.1A CN104141685B (en) | 2014-08-06 | 2014-08-06 | The main passive internal rotor magnetic bearing of one kind |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382274.1A CN104141685B (en) | 2014-08-06 | 2014-08-06 | The main passive internal rotor magnetic bearing of one kind |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141685A true CN104141685A (en) | 2014-11-12 |
| CN104141685B CN104141685B (en) | 2017-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410382274.1A Active CN104141685B (en) | 2014-08-06 | 2014-08-06 | The main passive internal rotor magnetic bearing of one kind |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048879A (en) * | 2015-05-25 | 2015-11-11 | 哈尔滨工业大学 | Magnetic-circuit-decoupling magnetic-bias active and passive integration radial magnetic suspension bearing |
| CN107339353A (en) * | 2017-08-23 | 2017-11-10 | 武汉理工大学 | A kind of marine drive shafting adjustable damping damping device |
| CN108087424A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of magnetic suspension swivel bearing |
| CN109681528A (en) * | 2018-11-26 | 2019-04-26 | 北京航空航天大学 | A kind of precision tracking bracket multi-coil axial magnetic bearing |
| CN111173838A (en) * | 2020-01-17 | 2020-05-19 | 淮阴工学院 | Radial non-coupling three-degree-of-freedom direct-current hybrid magnetic bearing |
| WO2021208278A1 (en) * | 2020-04-17 | 2021-10-21 | 北京航空航天大学宁波创新研究院 | Active and passive magnetic suspension bearing |
| CN117366103A (en) * | 2023-09-15 | 2024-01-09 | 淮阴工学院 | Asymmetric suspension force four-degree-of-freedom hybrid magnetic bearing and design method thereof |
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| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| JP2008182823A (en) * | 2007-01-25 | 2008-08-07 | Edwards Kk | Electromagnetic actuator and vacuum pump |
| CN101696713A (en) * | 2009-10-15 | 2010-04-21 | 山东科技大学 | Radial magnetic bearing of low-power consumption inner rotor of permanent-magnetic up-attracting and down-repelling structure |
| CN101922510A (en) * | 2010-08-17 | 2010-12-22 | 北京航空航天大学 | Inner rotor permanent magnet biased radial magnetic bearing with double permanent magnets |
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2014
- 2014-08-06 CN CN201410382274.1A patent/CN104141685B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6268674B1 (en) * | 1998-05-15 | 2001-07-31 | Kabushiki Kaisha Toshiba | Magnetic bearing apparatus |
| JP2003199288A (en) * | 2001-12-28 | 2003-07-11 | Sankyo Seiki Mfg Co Ltd | Magnetically levitated motor and magnetic bearing device |
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| JP2008182823A (en) * | 2007-01-25 | 2008-08-07 | Edwards Kk | Electromagnetic actuator and vacuum pump |
| CN101696713A (en) * | 2009-10-15 | 2010-04-21 | 山东科技大学 | Radial magnetic bearing of low-power consumption inner rotor of permanent-magnetic up-attracting and down-repelling structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048879A (en) * | 2015-05-25 | 2015-11-11 | 哈尔滨工业大学 | Magnetic-circuit-decoupling magnetic-bias active and passive integration radial magnetic suspension bearing |
| CN107339353A (en) * | 2017-08-23 | 2017-11-10 | 武汉理工大学 | A kind of marine drive shafting adjustable damping damping device |
| CN108087424A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of magnetic suspension swivel bearing |
| CN109681528A (en) * | 2018-11-26 | 2019-04-26 | 北京航空航天大学 | A kind of precision tracking bracket multi-coil axial magnetic bearing |
| CN109681528B (en) * | 2018-11-26 | 2020-05-05 | 北京航空航天大学 | Multi-coil axial magnetic bearing for precision tracking support |
| CN111173838A (en) * | 2020-01-17 | 2020-05-19 | 淮阴工学院 | Radial non-coupling three-degree-of-freedom direct-current hybrid magnetic bearing |
| WO2021208278A1 (en) * | 2020-04-17 | 2021-10-21 | 北京航空航天大学宁波创新研究院 | Active and passive magnetic suspension bearing |
| CN117366103A (en) * | 2023-09-15 | 2024-01-09 | 淮阴工学院 | Asymmetric suspension force four-degree-of-freedom hybrid magnetic bearing and design method thereof |
| CN117366103B (en) * | 2023-09-15 | 2024-06-21 | 淮阴工学院 | Asymmetric suspension force four-degree-of-freedom hybrid magnetic bearing and design method thereof |
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| CN104141685B (en) | 2017-11-03 |
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Effective date of registration: 20220207 Address after: 101100 room 5-02, floor 5, building 5, yard 10, Jiachuang Road, Tongzhou District, Beijing Patentee after: Huachi kinetic energy (Beijing) Technology Co.,Ltd. Address before: 311254 No. 602, shanliwang village, Suoqian Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou sinolion Technology Co.,Ltd. |