CN108547868A - A kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom - Google Patents
A kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom Download PDFInfo
- Publication number
- CN108547868A CN108547868A CN201810324656.7A CN201810324656A CN108547868A CN 108547868 A CN108547868 A CN 108547868A CN 201810324656 A CN201810324656 A CN 201810324656A CN 108547868 A CN108547868 A CN 108547868A
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- Prior art keywords
- axial
- pole
- stator
- mixed type
- magnetic bearing
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
Present invention is disclosed a kind of mixed type axial magnetic bearings of the radial magnetizing of semi-freedom, the mixed type axial magnetic bearing includes rotor and the stator module for being installed on rotor assembly side, rotor assembly is made of a rotor core, stator module includes interior axial pole, annular permanent magnet and with reeded outer axial pole, one axial control winding is installed in the groove of outer axial pole, outer axial pole includes the inner stator A of annular, upper stator disk B, the external stator C of annular, and lower stator disk D, interior axial pole, axial air-gap is formed between the lower surface and rotor core upper surface of the inner stator A of annular permanent magnet and outer axial pole, the mixed type axial magnetic bearing further includes having a displacement sensor, displacement sensor is connected by controller and power amplifier with axial control winding.The mixed type axial magnetic bearing is simple in structure, and mounting process difficulty is low, can realize the active control of shaft unilateral side axial displacement, is suitble to industrially promote the use of.
Description
Technical field
The present invention relates to a kind of mixed type axial magnetic bearings of the radial magnetizing of semi-freedom, belong to the mixing magnetic in magnetic bearing
Bearing.
Background technology
Magnetic bearing technology is using magnetic force between stator and rotor, by rotor suspension in space, avoids between rotor
Mechanical Contact, be a kind of high performance novel bearing.Due to being not necessarily to Mechanical Contact between rotor so that bearing rotor can
To bear very high rotating speed, have many advantages, such as that long lifespan, low energy consumption, unlubricated, pollution-free, in high speed, vacuum and ultra-clean etc.
Special application scenario has the advantage that can not be substituted.
Hybrid magnetic bearing generates bias magnetic field using permanent-magnet material, reduces what the bias current in active magnetic bearings generated
Power attenuation.However all there is the problems such as difficult to install, dismounting is inconvenient in existing mixed type axial magnetic bearing, limit its hair
Exhibition and application.
Invention content
The purpose of the present invention is exactly to propose a kind of diameter of semi-freedom to solve the above-mentioned problems in the prior art
To the mixed type axial magnetic bearing to magnetize.
The purpose of the present invention will be achieved by the following technical programs：A kind of mixed type of the radial magnetizing of semi-freedom
Axial magnetic bearing, including rotor and the stator module for being installed on rotor assembly side, the rotor assembly is by a rotor core structure
At the stator module includes annular permanent magnet, the interior axial pole of annular and an outer axial magnetic with reeded annular
Pole, an axial control winding is equipped in the groove of the outer axial pole, and the outer axial pole includes the inner stator of annular
A, upper stator disk B, the external stator C of annular and lower stator disk D, the interior axial pole, annular permanent magnet and outer axial magnetic
Axial air-gap is formed between the lower surface and rotor core upper surface of the inner stator A of pole, which further includes
Have one for detecting the displacement sensor that rotor deviates in-between displacement, institute's displacement sensors are put by controller and power
Big device is connected with the axial control winding.
Preferably, the shape of the rotor core is annular.
Preferably, the annular permanent magnet is mounted in the outer circle of interior axial pole, the inner stator A suits of outer axial pole
In the outer circle of annular permanent magnet, upper stator disk B is installed on inner stator A peripheries upper end, and external stator C suits are justified with upper stator
Disk B peripheries, lower stator disk D is installed on external stator C inner circles lower end and bottom surface is concordant.
Preferably, the axial length of the external stator C of the outer axial pole adds axial direction equal to the axial length of rotor core
The axial length of air gap adds the sum of the axial length of interior axial pole.
Preferably, the axial length of the inner stator A of the interior axial pole, annular permanent magnet and outer axial pole is equal.
Preferably, the annular permanent magnet uses radial magnetizing, the axial length of the annular permanent magnet to be equal to interior axial direction
The axial length of magnetic pole.
Preferably, the biasing magnetic flux that the annular permanent magnet generates passes through interior axial pole, axial air-gap, rotor iron successively
Core, axial air-gap and outer axial pole constitute circuit, the control magnetic flux generated by axial control winding pass sequentially through rotor core,
Axial air-gap and outer axial pole constitute circuit.
Preferably, the outer axial pole, interior axial pole, rotor core are that electrical pure iron is made.
Preferably, the axial control winding is centralization.
The advantages of technical solution of the present invention, is mainly reflected in：The mixed type axial magnetic bearing of the present invention is in actual use process
In can realize that the unilateral pulling force of shaft is adjustable, realize the active control of unilateral axial displacement, can apply and need to realize at certain
The occasion of axial unilateral side Bit andits control, such as in flywheel.The mixed type axial magnetic bearing and traditional single-degree-of-freedom axis of the present invention
It is compared to magnetic bearing, has the characteristics that compact, simple in structure, control simplify, are easy for installation.Such as to realize shaft axial direction position
The mixed type axial magnetic bearing of the radial magnetizing of two identical semi-freedoms then need to be only used cooperatively by the active control of shifting,
The axial suspension that can be achieved with shaft all has broad application prospects in various magnetic suspension systems.
Description of the drawings
Fig. 1 is a kind of floor map of the mixed type axial magnetic bearing of the radial magnetizing of semi-freedom of the present invention.
Fig. 2 is a kind of schematic diagram of the mixed type axial magnetic bearing of the radial magnetizing of semi-freedom of the present invention.
Specific implementation mode
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
It explains.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent replacement or equivalent transformation and
The technical solution of formation, all falls within the scope of protection of present invention.
Present invention is disclosed a kind of mixed type axial magnetic bearings of the radial magnetizing of semi-freedom, as shown in Figure 1, including turning
Son and the stator module for being installed on rotor assembly side, the rotor assembly are made of a rotor core 1, the rotor core 1
It is sleeved in shaft 10, in the technical scheme, the shape of the rotor core 1 is annular.The stator module includes annular
Permanent magnet 3, the interior axial pole 2 of annular and an outer axial pole 4 with reeded annular, the outer axial pole 4
One axial control winding 5, in the technical scheme, shape and the outer axial pole 4 of the interior axial pole 2 are installed in groove
Shape be annular.
The outer axial pole 4 includes inner stator A, upper stator disk B, the external stator C of annular and the lower stator circle of annular
The lower surface and rotor core upper surface of disk D, the inner stator A of the interior axial pole 2, annular permanent magnet 3 and outer axial pole 4
Between form axial air-gap 6, which further includes having one to deviate in-between displacement for detecting rotor
Displacement sensor, institute's displacement sensors are connected by controller and power amplifier with the axial control winding 5, the axis
It is centralization to control winding 5.
Specifically, the annular permanent magnet 3 is mounted in the outer circle of interior axial pole 2, the inner stator A of outer axial pole 4
Be sleeved in the outer circle of annular permanent magnet, upper stator disk B is installed on inner stator A peripheries upper end, external stator C suits with it is upper fixed
Sub- disk B peripheries, lower stator disk D is installed on external stator C inner circles lower end and bottom surface is concordant.As shown in Fig. 2, single arrow in Fig. 2
Head indicates that permanent magnet bias magnetic flux, double-head arrow indicate the magnetic flux that control winding generates.The biasing magnetic flux that the annular permanent magnet 3 generates
Circuit is constituted by interior axial pole 2, axial air-gap 6, rotor core 1, axial air-gap 6 and outer axial pole 4 successively, by axial direction
The control magnetic flux that control winding 5 generates passes sequentially through rotor core 1, axial air-gap 6 and outer axial pole 4 and constitutes circuit.
The axial length that the axial length of the external stator C of the outer axial pole 4 is equal to rotor core 1 adds axial air-gap 6
Axial length add the sum of the axial length of interior axial pole 2.The interior axial pole 2, annular permanent magnet 3 and outer axial pole
The axial length of 4 inner stator A is equal.The annular permanent magnet 3 uses radial magnetizing, the axial direction of the annular permanent magnet 3 long
Axial length of the degree equal to interior axial pole 2.The outer axial pole 4, interior axial pole 2, rotor core 1 are electrical pure iron
It is made.
Its basic functional principle is：In the axial air-gap of the mixed type axial magnetic bearing of the radial magnetizing of semi-freedom,
The magnetic flux that annular permanent magnet generates generates unilateral suction, increases the size of unilateral suction if necessary, needs to increase control electricity
The size of stream, the control magnetic flux that control electric current generates and biasing magnetic flux are in the same direction.Assuming that rotor is reversed with suction by one at this time
Perturbed force, rotor will deviate counter motion so that axial air-gap becomes larger, and magnetic flux becomes smaller.Displacement sensor detects at this time
This displacement signal is transformed into control signal by the displacement that rotor deviates, controller, and power amplifier is again by this control signal
It is transformed into control electric current, this electric current changes the magnetic flux size in control magnetic field, and the magnetic flux in rotor airgap is made to become larger, and increases gas
Rotor is retracted original position by the magnetic pull in gap.
The mixed type axial magnetic bearing of the radial magnetizing of the semi-freedom of the present invention can realize that the unilateral pulling force of shaft is adjustable, real
The active control of existing unilateral side axial displacement can apply the occasion for needing to realize axial unilateral Bit andits control at certain, such as
In flywheel.It is compared with traditional single-degree-of-freedom axial magnetic bearing, there is compact, simple in structure, control simplifies, easy for installation
The characteristics of.Such as to realize the active control of shaft axial displacement, then it only need to be by the radial magnetizing of two identical semi-freedoms
Mixed type axial magnetic bearing is used cooperatively, and can be achieved with the axial suspension of shaft, is had in various magnetic suspension systems wide
Application prospect.
The mixed type axial magnetic bearing of the present invention is simple in structure, and mounting process difficulty is low, can realize that shaft is unilateral axial
The active control of displacement is suitble to industrially promote the use of.
Still there are many embodiment, all technical sides formed using equivalents or equivalent transformation by the present invention
Case is within the scope of the present invention.
Claims (9)
1. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom, it is characterised in that：Including rotor and be installed on turn
The stator module of sub-component side, the rotor assembly is by a rotor core（1）It constitutes, the rotor core（1）It is sleeved on and turns
Axis（10）On, the stator module includes annular permanent magnet（3）, annular interior axial pole（2）And one with reeded ring
The outer axial pole of shape（4）, the outer axial pole（4）Groove in an axial control winding is installed（5）, the outer axial direction
Magnetic pole（4）Include the inner stator of annular（A）, upper stator disk（B）, annular external stator（C）And lower stator disk（D）, described
Interior axial pole（2）, annular permanent magnet（3）And outer axial pole（4）Inner stator（A）Lower surface and rotor core upper surface
Between form axial air-gap（6）, which further includes having one to deviate in-between displacement for detecting rotor
Displacement sensor, institute's displacement sensors are by controller and power amplifier and the axial control winding（5）It is connected.
2. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The rotor core（1）Shape be annular.
3. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The annular permanent magnet（3）It is mounted on interior axial pole（2）Outer circle on, outer axial pole（4）Inner stator（A）It is sleeved on ring
In the outer circle of shape permanent magnet, upper stator disk（B）It is installed on inner stator（A）Periphery upper end, external stator（C）Suit and upper stator
Disk（B）Periphery, lower stator disk（D）It is installed on external stator（C）Inner circle lower end and bottom surface is concordant.
4. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The outer axial pole（4）External stator（C）Axial length be equal to rotor core（1）Axial length add axial air-gap（6）
Axial length add interior axial pole（2）The sum of axial length.
5. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The interior axial pole（2）, annular permanent magnet（3）And outer axial pole（4）Inner stator（A）Axial length it is equal.
6. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The annular permanent magnet（3）Using radial magnetizing, the annular permanent magnet（3）Axial length be equal to interior axial pole（2）'s
Axial length.
7. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The annular permanent magnet（3）The biasing magnetic flux of generation passes through interior axial pole successively（2）, axial air-gap（6）, rotor core（1）、
Axial air-gap（6）And outer axial pole（4）Circuit is constituted, by axial control winding（5）The control magnetic flux of generation, which passes sequentially through, to be turned
Sub- iron core（1）, axial air-gap（6）And outer axial pole（4）Constitute circuit.
8. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The rotor core（1）, interior axial pole（2）, outer axial pole（4）It is that electrical pure iron is made.
9. a kind of mixed type axial magnetic bearing of the radial magnetizing of semi-freedom according to claim 1, it is characterised in that：
The axial direction control winding（5）For centralization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324656.7A CN108547868B (en) | 2018-04-12 | 2018-04-12 | Semi-freedom degree radial magnetizing hybrid axial magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324656.7A CN108547868B (en) | 2018-04-12 | 2018-04-12 | Semi-freedom degree radial magnetizing hybrid axial magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108547868A true CN108547868A (en) | 2018-09-18 |
| CN108547868B CN108547868B (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810324656.7A Active CN108547868B (en) | 2018-04-12 | 2018-04-12 | Semi-freedom degree radial magnetizing hybrid axial magnetic bearing |
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| CN (1) | CN108547868B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| US20220333644A1 (en) * | 2019-12-31 | 2022-10-20 | Gree Electric Appliances, Inc. Of Zhuhai | Magnetic Bearing, Compressor and Air Conditioner |
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| CN101092990A (en) * | 2007-07-13 | 2007-12-26 | 南京航空航天大学 | Permanent magnet biased axial magnetic suspension bearing |
| CN101832335A (en) * | 2010-05-25 | 2010-09-15 | 南京化工职业技术学院 | Permanent magnet biased axial-radial magnetic bearing |
| CN101893038A (en) * | 2010-08-04 | 2010-11-24 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN202520777U (en) * | 2012-02-28 | 2012-11-07 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN103216528A (en) * | 2013-04-22 | 2013-07-24 | 南京航空航天大学 | One-side hybrid axial magnetic bearing |
| CN104154119A (en) * | 2014-07-16 | 2014-11-19 | 南京化工职业技术学院 | Permanent magnet biased axial-radial magnetic bearing |
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2018
- 2018-04-12 CN CN201810324656.7A patent/CN108547868B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092990A (en) * | 2007-07-13 | 2007-12-26 | 南京航空航天大学 | Permanent magnet biased axial magnetic suspension bearing |
| CN101832335A (en) * | 2010-05-25 | 2010-09-15 | 南京化工职业技术学院 | Permanent magnet biased axial-radial magnetic bearing |
| CN101893038A (en) * | 2010-08-04 | 2010-11-24 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN202520777U (en) * | 2012-02-28 | 2012-11-07 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
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| CN104154119A (en) * | 2014-07-16 | 2014-11-19 | 南京化工职业技术学院 | Permanent magnet biased axial-radial magnetic bearing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| CN113048148B (en) * | 2019-12-28 | 2023-09-01 | 坎德拉(深圳)新能源科技有限公司 | Magnetic bearing and rotating mechanism using same |
| US20220333644A1 (en) * | 2019-12-31 | 2022-10-20 | Gree Electric Appliances, Inc. Of Zhuhai | Magnetic Bearing, Compressor and Air Conditioner |
| US11905994B2 (en) * | 2019-12-31 | 2024-02-20 | Gree Electric Appliances, Inc. Of Zhuhai | Magnetic bearing, compressor and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN108547868B (en) | 2020-02-07 |
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Effective date of registration: 20211224 Address after: 213163 No. 95, Zhenbei Road, Tong'an Town, high tech Zone, Suzhou, Jiangsu Patentee after: Suzhou LIANLI Precision Manufacturing Co.,Ltd. Address before: 210003, 66 new model street, Gulou District, Jiangsu, Nanjing Patentee before: NANJING University OF POSTS AND TELECOMMUNICATIONS |