CN102072249A - Large-bearing-capacity radial magnetic bearing - Google Patents
Large-bearing-capacity radial magnetic bearing Download PDFInfo
- Publication number
- CN102072249A CN102072249A CN2011100067544A CN201110006754A CN102072249A CN 102072249 A CN102072249 A CN 102072249A CN 2011100067544 A CN2011100067544 A CN 2011100067544A CN 201110006754 A CN201110006754 A CN 201110006754A CN 102072249 A CN102072249 A CN 102072249A
- Authority
- CN
- China
- Prior art keywords
- bearing
- load
- magnetic
- stator core
- bearing side
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a large-bearing-capacity radial magnetic bearing. The large-bearing-capacity radial magnetic bearing consists of a permanent magnet, a control side stator magnetically-conducting ring, a control side stator iron core, excitation coils, a control side rotor iron core, a bearing side stator magnetically-conducting ring, a big end of a bearing side stator iron core, a small end of the bearing side stator iron core, a bearing side rotor iron core and a rotor magnetically-conducting ring, wherein the stator iron cores are divided into a left end and a right end, namely the control side and the bearing side respectively; the control side stator iron core comprises four stator magnetic poles in X positive and negative directions and Y positive and negative directions; the four stator magnetic poles are connected with one another through a yoke part; each stator magnetic pole is wound with the excitation coil; the bearing side stator iron core comprises a large-area magnetic pole and a small-area magnetic pole in the gravity direction; and the permanent magnet is positioned between the control side stator magnetically-conducting ring and the bearing side stator magnetically-conducting ring and is used for providing a bias magnetic field to the control side and providing a permanent magnetic field capable of generating a single-side magnetic tensile force to the bearing side. The large-bearing-capacity radial magnetic bearing overcomes the defects of large volume and large suspended current when the conventional radial magnetic bearing supports large rotor gravity, and has the advantages of reliable performance and contribution to control.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, particularly a kind of large bearing capacity radial direction magnetic bearing can be used as the contactless support of rotary component in the machinery such as motor, lathe.
Background technique
Be applied to the magnetic levitation technology of ground installation, often require radial direction magnetic bearing can support bigger rotor gravity, as magnetic suspension high speed motor, magnetic levitation energy storage flywheel etc.Being applied to the axial magnetic axle construction that ground supporting uses at present mainly contains following several: the pure electromagnetic bearing of the first, the disturbing force that the magnetic pull that produces by electromagnetism magnetic field overcomes rotor gravity and is subjected to.This magnetic bearing volume is bigger, and the electric current of use is big, power consumption is big, and when large bearing capacity, the coil copper loss will sharply rise especially.It two is passive magnetic bearings, and it utilizes suction or repulsion between the permanent magnet to produce suspending power.This kind structure magnetic bearing is consumed power not, but its rigidity, damping are uncontrollable, and on the fitness for purpose rotor permanent magnet is installed, and is not suitable for being applied in the equipment of high speed rotating.It three is permanent magnet biased magnetic bearings, and main bearing capacity is born in the magnetic field that this kind magnetic bearing utilizes permanent magnet to produce, and electromagnetism magnetic field provides auxiliary adjusting power, thereby this magnetic bearing can reduce to control electric current greatly, reduces the wastage.Yet, each bias magnetic electrode structure symmetry of traditional permanent magnet offset radial magnetic bearing, the permanent magnetism power of magnetic pole of respectively setovering on each degrees of freedom is cancelled each other, in some large-scale rotating equipments, rotor is suspended in the central position usually, this moment, permanent magnet biased magnetic bearing still needed logical bigger electric current to overcome gravity to produce bigger unilateral magnetic force, so the volume of this kind magnetic bearing and power consumption are still considerable.In view of the foregoing, existing magnetic bearing structure can't satisfy the requirement of the bigger constant bearing capacity in the Ground Application.
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 permanent magnetism that utilizes to make every effort to overcome clothes gravity, can regulate electromagnetic force simultaneously and carry out ACTIVE CONTROL, volume is little, large bearing capacity radial direction magnetic bearing low in energy consumption.
One of technical solution of the present invention is: the large bearing capacity radial direction magnetic bearing, by permanent magnet, control side stator magnetic guiding loop, the control side stator core, field coil, the control side rotor core, load-bearing side stator magnetic guiding loop, the big end of load-bearing side stator core, load-bearing side stator core small end, the rotor core of load-bearing side, the rotor magnetic guiding loop is formed, stator core is divided into two ends, the left and right sides, be respectively control side and load-bearing side, the control side stator core comprises X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke portion between them, each magnetic pole of the stator is wound with field coil, the big end of load-bearing side stator core is that a major axis is to magnetic pole of the stator, load-bearing side stator core small end is that a minor axis is to magnetic pole of the stator, control side stator core outside is a control side stator magnetic guiding loop, big end of load-bearing side stator core and load-bearing side stator core small end are outside to be load-bearing side stator magnetic guiding loop, permanent magnet is presented axially between control side magnetic guiding loop and the load-bearing side magnetic guiding loop, control side stator core inside is the control side rotor core, big end of load-bearing side stator core and load-bearing side stator core small end are inner to be the rotor core of load-bearing side, control side stator core internal surface and control side rotor core outer surface leave certain clearance, form the control side air gap, the big end of load-bearing side rotor core, load-bearing side rotor core small end internal surface and load-bearing side rotor core outer surface leave certain clearance, form load-bearing side air gap, the rotor magnetic guiding loop is installed in control side rotor core and load-bearing side rotor core inside, and the both sides rotor core coupled together, form flux path.The large bearing capacity radial direction magnetic bearing is characterized in that: the axial length of load-bearing side stator core small end is 0.4～0.7 times of the big end of load-bearing side stator core.Described permanent magnet is an axial annulus, magnetizes vertically, adopts rare earth permanent-magnetic material or ferrite permanent-magnet materials to make.The big end of load-bearing side stator core, load-bearing side stator core small end, control side stator magnetic guiding loop, load-bearing side stator magnetic guiding loop and rotor magnetic guiding loop all adopt the good material of magnetic property, make as any one of electrical pure iron, 1J50 or silicon steel.The control side gap length is 0.5～1 times of load-bearing side gap length.
The principle of such scheme is: the present invention is divided into load-bearing side and two parts of control side with radial direction magnetic bearing, and the load-bearing side is used for overcoming rotor gravity, and control side is used for overcoming the disturbing force that rotor is subjected to.Permanent magnet constitutes magnetic circuit by control side stator magnetic guiding loop, control side stator core, control side air gap, control side rotor core, rotor magnetic guiding loop, the rotor core of load-bearing side, load-bearing side air gap, while through the big end of load-bearing side stator core and small end, load-bearing side stator magnetic guiding loop.Electromagnetic circuit constitutes the loop in control side stator core, control side air gap, control side rotor core.In the load-bearing side, because two stator core magnetic pole axial length differences, permanent magnetic circuit produces the permanent magnetism pulling force of different sizes respectively at the air gap place of large and small two ends iron core, the synthetic back of two power to the unilateral magnetic force of rotor in order to overcome rotor gravity; In control side, permanent magnetic circuit produces bias magnetic field at the air gap place of 4 stator core correspondences respectively, electromagnetic circuit produces at this air gap place and regulates magnetic field, because rotor gravity is born by the permanent magnetism power of load-bearing side, control side only need be born the disturbing force that rotor is subjected to, therefore compare the permanent magnet offset radial magnetic bearing structure that existing two ends are all symplex structure, the suspension electric current of this structure is less, and the bearing volume is also less.Permanent magnetic circuit of the present invention is: magnetic flux is from the permanent magnet N utmost point, by control side stator magnetic guiding loop, control side stator core, control side air gap, control side rotor core, interior magnetic guiding loop to rotor core, the load-bearing side air gap of load-bearing side, be divided into two-way and get back to the permanent magnet S utmost point through the load-bearing big end of side stator core and load-bearing side stator core small end, load-bearing side outer magnetizer respectively, form the main magnetic circuit of magnetic suspension bearing, as shown in Figure 1.Electromagnetic circuit is an example with the magnetic flux that X postive direction magnetic pole field coil energising back produces: X postive direction magnetic pole of the stator, X postive direction air gap, control side rotor core, be divided into three the tunnel respectively by behind X negative direction, Y postive direction and the Y negative direction air gap, get back to X postive direction magnetic pole through the magnetic pole of the stator of each air gap correspondence and constitute the closed-loop path, as shown in Figure 3.
Two of technical solution of the present invention is: the large bearing capacity radial direction magnetic bearing, form by permanent magnet, control side stator magnetic guiding loop, control side stator core, field coil, control side rotor core, load-bearing side stator magnetic guiding loop, the big end of load-bearing side stator core, load-bearing side stator core small end, the rotor core of load-bearing side, rotor magnetic guiding loop.Stator core is divided into two ends, the left and right sides, is respectively control side and load-bearing side.The control side stator core comprises 4 magnetic pole of the stator on the positive negative direction of X, Y, connect by yoke portion between them, each magnetic pole of the stator is wound with field coil, the big end of load-bearing side stator core is the long magnetic pole of the stator of a length of pole arc, load-bearing side stator core small end is the short magnetic pole of the stator of a length of pole arc, and the small end length of pole arc is generally 0.4～0.7 times of big end.Control side stator core outside is a control side stator magnetic guiding loop, big end of load-bearing side stator core and load-bearing side stator core small end are outside to be load-bearing side stator magnetic guiding loop, permanent magnet is presented axially between control side magnetic guiding loop and the load-bearing side magnetic guiding loop, control side stator core inside is the control side rotor core, big end of load-bearing side stator core and load-bearing side stator core small end are inner to be the rotor core of load-bearing side, control side stator core internal surface and control side rotor core outer surface leave certain clearance, form the control side air gap, the big end of load-bearing side rotor core, load-bearing side rotor core small end internal surface and load-bearing side rotor core outer surface leave certain clearance, form load-bearing side air gap, the control side air gap is generally 0.5～1 times of load-bearing side air gap.The rotor magnetic guiding loop is installed in control side rotor core and load-bearing side rotor core inside, and the both sides rotor core is coupled together, and forms flux path.
The principle of such scheme is: the present invention is divided into load-bearing side and two parts of control side with radial direction magnetic bearing, and the load-bearing side is used for overcoming rotor gravity, and control side is used for overcoming the disturbing force that rotor is subjected to.Permanent magnet constitutes magnetic circuit by control side stator magnetic guiding loop, control side stator core, control side air gap, control side rotor core, rotor magnetic guiding loop, the rotor core of load-bearing side, load-bearing side air gap, while through the big end of load-bearing side stator core and small end, load-bearing side stator magnetic guiding loop.Electromagnetic circuit constitutes the loop in control side stator core, control side air gap, control side rotor core.In the load-bearing side, because two stator core magnetic pole lengths of pole arc are inconsistent, permanent magnetic circuit produces the permanent magnetism pulling force of different sizes respectively at the air gap place of large and small two ends magnetic pole, the synthetic back of two power to the unilateral magnetic force of rotor in order to overcome rotor gravity; In control side, permanent magnetic circuit produces bias magnetic field at the air gap place of 4 stator core correspondences respectively, electromagnetic circuit produces at this air gap place and regulates magnetic field, because rotor gravity is born by the permanent magnetism power of load-bearing side, control side only need be born the disturbing force that rotor is subjected to, therefore compare the permanent magnet offset radial magnetic bearing structure that existing two ends are all symplex structure, the suspension electric current of this structure is less, and the bearing volume is also less.Permanent magnetic circuit of the present invention is: magnetic flux is from the permanent magnet N utmost point, by control side stator magnetic guiding loop, control side stator core, control side air gap, control side rotor core, interior magnetic guiding loop to rotor core, the load-bearing side air gap of load-bearing side, be divided into two-way and get back to the permanent magnet S utmost point through the load-bearing big end of side stator core and load-bearing side stator core small end, load-bearing side outer magnetizer respectively, form the main magnetic circuit of magnetic suspension bearing, as shown in Figure 4.Electromagnetic circuit is an example with the magnetic flux that Y direction magnetic pole field coil produces: Y postive direction magnetic pole of the stator, Y postive direction air gap, control side rotor core, Y negative direction air gap, Y negative direction magnetic pole, get back to Y postive direction magnetic pole through the control side rotor core and constitute the closed-loop path, as shown in Figure 5.
The present invention's advantage compared with prior art is: the present invention is divided into load-bearing side and two parts of control side with radial direction magnetic bearing.Do not have field coil at load-bearing side magnetic pole, utilize two magnetic poles to produce unilateral magnetic force, make the load-bearing side only need less magnetic pole area can overcome bigger gravity by the inconsistent structure of area.Therefore, the permanent magnet offset radial magnetic bearing structure that is all symplex structure with existing both sides is compared, and when being applied to identical load-bearing occasion, this structure has been dwindled volume, has alleviated weight, has reduced 4 field coils, has improved the reliability of system.Simultaneously, this radial direction magnetic bearing can keep rotor stability to suspend because rotor gravity is born by the load-bearing side fully so control side only need pass to less current.Therefore, another advantage of this structure is that the suspension electric current is little, and copper loss is little.
Description of drawings
Fig. 1 is the large bearing capacity radial direction magnetic bearing axial, cross-sectional view of one of the technology of the present invention solution;
Fig. 2 is the large bearing capacity radial direction magnetic bearing load-bearing side stator core structure figure of one of the technology of the present invention solution;
Fig. 3 is one of the technology of the present invention solution, two large bearing capacity radial direction magnetic bearing control side axial end figure;
Fig. 4 is two a large bearing capacity radial direction magnetic bearing axial, cross-sectional view of the technology of the present invention solution;
Fig. 5 is that two large bearing capacity radial direction magnetic bearing load-bearing side shaft of the technology of the present invention solution is to end view drawing.
Embodiment
As shown in Figure 1, the unequal permanent magnet biased internal rotor radial magnetic bearing of load-bearing side magnetic pole axial length for one of the technology of the present invention solution, be citation form of the present invention, it is made up of 4,1 control side rotor magnetic guiding loop of 3,4 control side field coils of 2,1 control side stator core of 1,1 control side stator magnetic guiding loop of 1 permanent magnet, 11,1 rotor magnetic guiding loop 12 of the big end of 7,1 load-bearing side stator core of 1 load-bearing side stator magnetic guiding loop 9,1 load-bearing side rotor core of 8,1 load-bearing side stator core small end.Wherein control side stator core 3 has comprised 4 magnetic pole of the stator on magnetic bearing one end X, the Y direction, connect by yoke portion between the magnetic pole, each magnetic pole of the stator of control side is wound with field coil 4, and control side stator core 3 outsides are control side stator magnetic guiding loop 2, as shown in Figure 3.Big end 8 of load-bearing side stator core and load-bearing side stator core small end 9 have been formed 2 magnetic pole of the stator on the magnetic bearing the other end Y direction, connect at middle part unshakable in one's determination by the different yoke portion of axial length between the magnetic pole, the axial length of load-bearing side stator core small end 9 is 0.4～0.7 times of big end 8, occurrence is determined by rotor weight, rotor is heavy more, then value is more little, as shown in Figure 2.The big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 outsides are load-bearing side stator magnetic guiding loop 7, and permanent magnet 1 is presented axially between control side stator magnetic guiding loop 2 and the load-bearing side stator magnetic guiding loop 7.Control side stator core 3 inside are control side rotor core 6, control side stator core 3 internal surfaces and control side rotor core 6 outer surfaces leave certain clearance, form control side air gap 5, the big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 inside are load-bearing side rotor core 11, the big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 internal surfaces and load-bearing side rotor core 11 outer surfaces leave certain clearance, form load-bearing side air gap 10, the control side air gap is 0.5～1 times of load-bearing side air gap, rotor magnetic guiding loop 12 is installed in control side rotor core 6 and load-bearing side rotor core 11 inside, and control side rotor core 6 and load-bearing side rotor core 11 coupled together, form flux path.
As shown in Figure 4, be two the unequal permanent magnet biased internal rotor radial magnetic bearing of the load-bearing side magnetic pole length of pole arc of the technology of the present invention solution, it is made up of 4,1 control side rotor magnetic guiding loop of 3,4 control side field coils of 2,1 control side stator core of 1,1 control side stator magnetic guiding loop of 1 permanent magnet, 11,1 rotor magnetic guiding loop 12 of the big end of 7,1 load-bearing side stator core of 1 load-bearing side stator magnetic guiding loop 9,1 load-bearing side rotor core of 8,1 load-bearing side stator core small end.Wherein control side stator core 3 has comprised 4 magnetic pole of the stator on magnetic bearing one end X, the Y direction, connect by yoke portion between the magnetic pole, each magnetic pole of the stator of control side is wound with field coil 4, and control side stator core 3 outsides are control side stator magnetic guiding loop 2, as shown in Figure 3.Big end 8 of load-bearing side stator core and load-bearing side stator core small end 9 have been formed 2 magnetic pole of the stator on the magnetic bearing the other end Y direction, connect by yoke portion between the magnetic pole, the length of pole arc of load-bearing side stator core small end 9 is 0.4～0.7 times of big end 8, occurrence is determined by rotor weight, rotor is heavy more, then value is more little, as shown in Figure 5.The big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 outsides are load-bearing side stator magnetic guiding loop 7, and permanent magnet 1 is presented axially between control side stator magnetic guiding loop 2 and the load-bearing side stator magnetic guiding loop 7.Control side stator core 3 inside are control side rotor core 6, control side stator core 3 internal surfaces and control side rotor core 6 outer surfaces leave certain clearance, form control side air gap 5, the big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 inside are load-bearing side rotor core 11, the big end 8 of load-bearing side stator core, load-bearing side stator core small end 9 internal surfaces and load-bearing side rotor core 11 outer surfaces leave certain clearance, form load-bearing side air gap 10, the control side air gap is 0.5～1 times of load-bearing side air gap, rotor magnetic guiding loop 12 is installed in control side rotor core 6 and load-bearing side rotor core 11 inside, and control side rotor core 6 and load-bearing side rotor core 11 coupled together, form flux path.
The used big end 8 of load-bearing side stator core, load-bearing side stator core small end 9, control side stator magnetic guiding loop 2, load-bearing side stator magnetic guiding loop 7 and the rotor magnetic guiding loop 12 of each technological scheme of the invention described above all made with the good material of magnetic property, as magnetic materials such as electrical pure iron, various carbon steel, cast iron, cast steel, alloyed steel, 1J50 and 1J79.Control side stator core 3, control side rotor core 6 and load-bearing side rotor core 11 can form with magnetic property good electric thin steel sheet such as magnetic material punching presses such as electrical pure iron, electrical steel plate DR510, DR470, DW350,1J50 and the 1J79 system of changing.The material of permanent magnet 1 is good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, and permanent magnet 1 is an axial annulus, magnetizes vertically.Paint-dipping drying forms after the good electromagnetic wire coiling of field coil 4 usefulness conductions.
Claims (10)
1. large bearing capacity radial direction magnetic bearing, by permanent magnet (1), control side stator magnetic guiding loop (2), control side stator core (3), field coil (4), control side rotor core (6), load-bearing side stator magnetic guiding loop (7), the big end of load-bearing side stator core (8), load-bearing side stator core small end (9), load-bearing side rotor core (11), rotor magnetic guiding loop (12) is formed, it is characterized in that: stator core is divided into two ends, the left and right sides, be respectively control side and load-bearing side, control side stator core (3) comprises X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke portion between them, each magnetic pole of the stator is wound with field coil (4), the big end of load-bearing side stator core (8) is that a major axis is to magnetic pole of the stator, load-bearing side stator core small end (9) is that a minor axis is to magnetic pole of the stator, control side stator core (3) outside is a control side stator magnetic guiding loop (2), big end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are outside to be load-bearing side stator magnetic guiding loop (7), permanent magnet (1) is presented axially between control side magnetic guiding loop (2) and the load-bearing side magnetic guiding loop (7), control side stator core (3) inside is control side rotor core (6), big end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are inner to be load-bearing side rotor core (11), control side stator core (3) internal surface and control side rotor core (6) outer surface leave certain clearance, form control side air gap (5), the big end of load-bearing side rotor core (8), load-bearing side rotor core small end (9) internal surface and load-bearing side rotor core (11) outer surface leave certain clearance, form load-bearing side air gap (10), rotor magnetic guiding loop (12) is installed in control side rotor core (6) and load-bearing side rotor core (11) inside, and the both sides rotor core coupled together, form flux path.
2. large bearing capacity radial direction magnetic bearing according to claim 1 is characterized in that: the axial length of load-bearing side stator core small end (9) is 0.4～0.7 times of the big end of load-bearing side stator core (8).
3. large bearing capacity radial direction magnetic bearing according to claim 1, it is characterized in that: the big end of described load-bearing side stator core (8), load-bearing side stator core small end (9), control side stator magnetic guiding loop (2), load-bearing side stator magnetic guiding loop (7) and rotor magnetic guiding loop (12) all adopt the good material of magnetic property, make as any one of electrical pure iron, 1J50 or silicon steel.
4. large bearing capacity radial direction magnetic bearing according to claim 1 is characterized in that: described permanent magnet (1) is an axial annulus, magnetizes vertically.
5. large bearing capacity radial direction magnetic bearing according to claim 1 is characterized in that: control side air gap (5) length is 0.5～1 times of load-bearing side air gap (10) length.
6. large bearing capacity radial direction magnetic bearing, by permanent magnet (1), control side stator magnetic guiding loop (2), control side stator core (3), field coil (4), control side rotor core (6), load-bearing side stator magnetic guiding loop (7), the big end of load-bearing side stator core (8), load-bearing side stator core small end (9), load-bearing side rotor core (11), rotor magnetic guiding loop (12) is formed, it is characterized in that: stator core is divided into two ends, the left and right sides, be respectively control side and load-bearing side, control side stator core (3) comprises X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke portion between them, each magnetic pole of the stator is wound with field coil (4), the big end of load-bearing side stator core (8) is a big polar arc magnetic pole of the stator, load-bearing side stator core small end (9) is a little polar arc magnetic pole of the stator, control side stator core (3) outside is a control side stator magnetic guiding loop (2), big end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are outside to be load-bearing side stator magnetic guiding loop (7), permanent magnet (1) is presented axially between control side magnetic guiding loop (2) and the load-bearing side magnetic guiding loop (7), control side stator core (3) inside is control side rotor core (6), big end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are inner to be load-bearing side rotor core (11), control side stator core (3) internal surface and control side rotor core (6) outer surface leave certain clearance, form control side air gap (5), the big end of load-bearing side rotor core (8), load-bearing side rotor core small end (9) internal surface and load-bearing side rotor core (11) outer surface leave certain clearance, form load-bearing side air gap (10), rotor magnetic guiding loop (12) is installed in control side rotor core (6) and load-bearing side rotor core (11) inside, and the both sides rotor core coupled together, form flux path.
7. large bearing capacity radial direction magnetic bearing according to claim 6 is characterized in that: the length of pole arc of load-bearing side stator core small end (9) is 0.4～0.7 times of the big end of load-bearing side stator core (8).
8. large bearing capacity radial direction magnetic bearing according to claim 6, it is characterized in that: the big end of described load-bearing side stator core (8), load-bearing side stator core small end (9), control side stator magnetic guiding loop (2), load-bearing side stator magnetic guiding loop (7) and rotor magnetic guiding loop (12) all adopt the good material of magnetic property, make as any one of electrical pure iron, 1J50 or silicon steel.
9. large bearing capacity radial direction magnetic bearing according to claim 6 is characterized in that: described permanent magnet (1) is an axial annulus, magnetizes vertically.
10. large bearing capacity radial direction magnetic bearing according to claim 6 is characterized in that: control side air gap (5) length is 0.5～1 times of load-bearing side air gap (10) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110006754 CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110006754 CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102072249A true CN102072249A (en) | 2011-05-25 |
| CN102072249B CN102072249B (en) | 2013-05-08 |
Family
ID=44030932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110006754 Expired - Fee Related CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072249B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836069A (en) * | 2012-11-26 | 2014-06-04 | 张玉宝 | Magnetic bearing and control mode thereof |
| CN104141717A (en) * | 2014-06-30 | 2014-11-12 | 山东科技大学 | High damping hybrid magnetic damper for restraining vibration of rotor |
| CN104179801A (en) * | 2013-05-26 | 2014-12-03 | 张玉宝 | Radial-axial magnetic suspension composite unit |
| CN104214218A (en) * | 2014-08-07 | 2014-12-17 | 南京航空航天大学 | Method and structure capable of balancing static loads in magnetic bearing |
| CN106594072A (en) * | 2016-11-29 | 2017-04-26 | 北京航空航天大学 | Non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing |
| CN107181359A (en) * | 2017-06-15 | 2017-09-19 | 深圳麦格动力技术有限公司 | Multilayer permanent magnetism off-set magnetic suspension unit, magnetic suspension motor and domestic air conditioning |
| CN111022499A (en) * | 2019-12-31 | 2020-04-17 | 淮阴工学院 | Radial large-bearing-capacity hybrid magnetic bearing |
| CN111828475A (en) * | 2020-06-22 | 2020-10-27 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN115076234A (en) * | 2022-07-21 | 2022-09-20 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001224154A (en) * | 2000-02-10 | 2001-08-17 | Japan Science & Technology Corp | Method and apparatus for multipole magnetically levitating rotation |
| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
| CN1707127A (en) * | 2004-12-30 | 2005-12-14 | 北京航空航天大学 | Low-power consumption permanent magnetic offset mixed radial magnetic bearing |
-
2011
- 2011-01-13 CN CN 201110006754 patent/CN102072249B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001224154A (en) * | 2000-02-10 | 2001-08-17 | Japan Science & Technology Corp | Method and apparatus for multipole magnetically levitating rotation |
| CN1707127A (en) * | 2004-12-30 | 2005-12-14 | 北京航空航天大学 | Low-power consumption permanent magnetic offset mixed radial magnetic bearing |
| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836069A (en) * | 2012-11-26 | 2014-06-04 | 张玉宝 | Magnetic bearing and control mode thereof |
| CN104179801A (en) * | 2013-05-26 | 2014-12-03 | 张玉宝 | Radial-axial magnetic suspension composite unit |
| CN104141717A (en) * | 2014-06-30 | 2014-11-12 | 山东科技大学 | High damping hybrid magnetic damper for restraining vibration of rotor |
| CN104141717B (en) * | 2014-06-30 | 2016-08-17 | 山东科技大学 | A kind of for suppressing big damping hybrid magnetoresistive Buddhist nun's device of rotor oscillation |
| CN104214218A (en) * | 2014-08-07 | 2014-12-17 | 南京航空航天大学 | Method and structure capable of balancing static loads in magnetic bearing |
| CN106594072A (en) * | 2016-11-29 | 2017-04-26 | 北京航空航天大学 | Non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing |
| CN107181359A (en) * | 2017-06-15 | 2017-09-19 | 深圳麦格动力技术有限公司 | Multilayer permanent magnetism off-set magnetic suspension unit, magnetic suspension motor and domestic air conditioning |
| WO2018228261A1 (en) * | 2017-06-15 | 2018-12-20 | 深圳麦格动力技术有限公司 | Multilayer permanent magnet biased magnetic suspension unit, magnetic suspension motor and household air conditioner |
| CN107181359B (en) * | 2017-06-15 | 2023-07-25 | 北京昆腾迈格技术有限公司 | Multilayer permanent magnet bias magnetic suspension unit, magnetic suspension motor and household air conditioner |
| CN111022499A (en) * | 2019-12-31 | 2020-04-17 | 淮阴工学院 | Radial large-bearing-capacity hybrid magnetic bearing |
| CN111022499B (en) * | 2019-12-31 | 2023-09-29 | 淮阴工学院 | Radial large bearing capacity hybrid magnetic bearing |
| CN111828475A (en) * | 2020-06-22 | 2020-10-27 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN111828475B (en) * | 2020-06-22 | 2022-03-04 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN115076234A (en) * | 2022-07-21 | 2022-09-20 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102072249B (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102072249B (en) | Large-bearing-capacity radial magnetic bearing | |
| CN100451365C (en) | Permanent magnet polarized internal rotor radial magnetic bearing | |
| CN1277060C (en) | Low power consumption permanent magnet biased internal rotor radial magnetic bearing | |
| CN1293319C (en) | Low-consumption permanent-magnet offset external rotor radial magnetic bearing | |
| CN101907131B (en) | Permanent magnet-biased inner rotor radial magnetic bearing with fault tolerance function | |
| CN100441892C (en) | Permanent magnet polarized external rotor radial magnetic bearing | |
| CN1285840C (en) | Permanent magnetism biased radial magnetic bearing in external rotor | |
| CN105782242A (en) | Flywheel energy storage system and five-degree-of-freedom magnetic suspension supporting structure | |
| CN204186802U (en) | A kind of Novel shaft-radial three freedom degree mixed magnetic bearing | |
| CN104265761A (en) | Novel axial-radial three-degree-of-freedom hybrid magnetic bearing | |
| CN104533948A (en) | Permanent magnet biased outer rotor four-freedom-degree active-passive hybrid magnetic bearing | |
| CN104214216B (en) | A kind of four-degree-of-freedom internal rotor magnetic bearing | |
| CN201730962U (en) | Five-degree-of-freedom permanent magnet biased magnetic bearing | |
| CN102042327A (en) | Low-power consumption large-bearing capacity permanent-magnet bias mixed radial magnetic bearing | |
| CN101761574A (en) | Low power consumption outer rotor radial magnetic bearing with upper-attracting and lower-repulsing structure of permanent magnet | |
| CN105090245A (en) | Asymmetric permanent-magnet bias axial magnetic bearing | |
| CN104141685A (en) | Driving and driven inner rotor magnetic bearing | |
| CN103925293B (en) | A kind of thin slice rotor radial hybrid magnetic bearing | |
| CN201925346U (en) | Permanent magnet biased radial hybrid magnetic bearing with low power consumption and large bearing capacity | |
| CN103939465A (en) | Magnetic bearing with single freedom degree | |
| CN106438693A (en) | Two-freedom-degree permanent magnet biased radial hybrid magnetic bearing | |
| CN1270108C (en) | Low power consumption permanent magnet biased axial magnetic bearing | |
| CN104121288A (en) | Active and passive outer rotor magnetic bearing | |
| CN206221508U (en) | A kind of two degrees of freedom permanent magnet offset radial hybrid magnetic bearing | |
| CN100451363C (en) | PM offset external rotor radial mixed magnetic bearing with redundant structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20190113 |