CN105840654A - Permanent magnet bias single-degree-of-freedom axial magnetic bearing - Google Patents
Permanent magnet bias single-degree-of-freedom axial magnetic bearing Download PDFInfo
- Publication number
- CN105840654A CN105840654A CN201610399385.2A CN201610399385A CN105840654A CN 105840654 A CN105840654 A CN 105840654A CN 201610399385 A CN201610399385 A CN 201610399385A CN 105840654 A CN105840654 A CN 105840654A
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- China
- Prior art keywords
- iron core
- magnetic bearing
- permanent magnet
- axial
- stator
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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
-
- 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
Abstract
The invention discloses a permanent magnet bias single-degree-of-freedom axial magnetic bearing. The permanent magnet bias single-degree-of-freedom axial magnetic bearing comprises a stator and a rotor iron core. The rotor iron core comprises an axial part and a radial part. The stator comprises a left side iron core bridge iron core, a right side iron core bridge iron core, a left side annular permanent magnet, a right side annular permanent magnet, a magnetic bearing left side stator iron core and a magnetic bearing right side stator iron core, wherein the left side iron core bridge iron core and the right side iron core bridge iron core are symmetrically arranged with the radial part of the rotor iron core as the symmetric center and arranged along the axial part of the rotor iron core, the left side annular permanent magnet and the right side annular permanent magnet are symmetrically arranged with the radial part of the rotor iron core as the symmetric center and arranged along the axial part of the rotor iron core, the magnetic bearing left side stator iron core and magnetic bearing right side stator iron core are symmetrically arranged with the radial part of the rotor iron core as the symmetric center and arranged along the axial part of the rotor iron core, and the left side iron core bridge iron core and the right side iron core bridge iron core, the left side annular permanent magnet and the right side annular permanent magnet and the magnetic bearing left side stator iron core and magnetic bearing right side stator iron core are sequentially arranged. A magnetism isolation aluminum ring is arranged between the magnetic bearing left side stator iron core and magnetic bearing right side stator iron core. The magnetic bearing left side stator iron core and magnetic bearing right side stator iron core are each of an E-shaped structure. A control winding is manufactured in each stator groove in a winding manner. The permanent magnet bias single-degree-of-freedom axial magnetic bearing effectively overcomes the defects of an existing axial magnetic bearing, and the low-power-consumption single-degree-of-freedom axial magnetic bearing easy to control, manufacture and assemble and capable of controlling magnetic flux not to pass through the permanent magnets and the rotor axial iron cores and generating larger axial levitation force is provided.
Description
Technical field
The present invention relates to bearing mnanufacture technical field, particularly a kind of control, manufacture and assembly are simple, control magnetic flux without
Cross permanent magnet and rotor axial iron core, the axial magnetic axis of low power consumption permanent magnet biased single-degree-of-freedom of bigger axial suspension power can be produced
Hold.
Background technology
Magnetic bearing is to utilize the electromagnetic force between stator and rotor by rotor suspension in space, makes between stator and rotor inorganic
A kind of novel high-performance bearing of tool contact.Owing to there is not Mechanical Contact between stator and rotor, so what magnetic suspension bearing supported
Suspension rotor can reach the highest operating rotating speed, and have that mechanical abrasion, energy consumption be low, life-span length, without lubrication, pollution-free
Etc. advantage, it is particularly suitable at a high speed or ultrahigh speed directly drives field.
At present, magnetic bearing is divided into following three kinds according to the mode that magnetic force provides:, active magnetic bearings, biased electrical miscarry
Raw bias magnetic field, is overlapped mutually with biasing magnetic flux by the control magnetic flux controlling electric current generation, thus produces controlled suspending power, should
Plant magnetic bearing volume, weight and power consumption the biggest；, passive magnetic bearing, suspending power is provided by permanent magnet completely, required control
Device processed is simple, and suspension power consumption is little, but rigidity and damping are the least, typically apply to support the most in one direction object or
It is to alleviate the load acting on traditional bearing；, hybrid magnetic bearing, be the electricity using permanent magnet material to substitute in active magnetic bearings
Magnet produces bias magnetic field, and controlling electric current only provides balanced load or the control magnetic flux of interference, greatly reduces magnetic bearing
Power attenuation, reduces the volume of magnetic bearing, alleviates its weight, and improves bearing capacity.
At present, different according to permanent-magnetic biased axial magnetic bearing version, three kinds can be divided into,, permanent magnet be placed in turn
In son, its installation difficulty is caused to increase, the lifting of rotor strength its rotating speed of lower limit；, that suspension rotor is placed in by magnetic bearing is fixed
The both sides of son, axial length is long, and critical speed is low；, magnetic bearing axially controls magnetic flux through permanent magnet, be bright to permanent magnet
Aobvious demagnetizing effect, leakage field is relatively big, and the magnetic resistance of permanent magnet is big, and needed for resulting in identical axial suspension power, electric current is big, merit
Consumption height, its applied field field is restricted.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing, and the present invention is effective
Solve the deficiency of existing axial magnetic bearing, it is provided that a kind of control, manufacture and assembly simple, control magnetic flux without permanent magnet with
Rotor axial iron core, can produce the low-power consumption single-degree-of-freedom axial magnetic bearing of bigger axial suspension power.
The present invention is achieved through the following technical solutions:
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing, including stator, rotor core (11), it is characterised in that: described rotor
Iron core (11) includes axial component, radial component；Described stator includes the axial component along rotor core (11), and with rotor ferrum
The radial component of core (11) is symmetrical centre, the most symmetrically arranged left side iron core bridge iron core (1), right side iron core bridge iron core (7)；
Left side annular permanent magnet (2), right circular permanent magnet (6)；Stator core on the right side of stator core (3), magnetic bearing on the left of magnetic bearing
(5)；It is provided with every magnetic aluminum ring (4) between stator core (5) on the right side of stator core (3), magnetic bearing on the left of magnetic bearing；Magnetic bearing is left
On the right side of side stator core (3), magnetic bearing, stator core (5) is all in E shape structure, rotating around being shaped with control winding in stator slot
(10)。
The further Technological improvement plan of the present invention is:
The suction circle that on the left of described magnetic bearing, on the right side of stator core (3), magnetic bearing, stator core (5) is arranged by upper and lower position
The control disk (8,9) that dish (12,13) and centre position are arranged is constituted, control winding (10) be wound in suction disk (12,
13) and control between disk (8,9).
The further Technological improvement plan of the present invention is:
Gas length between described control disk (8,9) and rotor core (11) radial component is more than suction disk (12,13)
And the gas length between rotor core (11) radial component, and suction disk (12,13) and rotor core (11) radial component
Between gas length less than stator core (5) and rotor core (11) on the right side of stator core (3) on the left of magnetic bearing and magnetic bearing
Gas length between axial component.
The further Technological improvement plan of the present invention is:
Described left side annular permanent magnet (2), right circular permanent magnet (6) are the annular permanent magnet of axial charging, for magnetic bearing
Biasing magnetic flux is provided.
The further Technological improvement plan of the present invention is:
Described it is made up of monoblock aluminium every magnetic aluminum ring (4), left and right sides magnetic circuit is spaced, and reduce leakage field.
The further Technological improvement plan of the present invention is:
Stator core (5), right side ferrum on the right side of stator core (3), magnetic bearing on the left of described left side iron core bridge iron core (1), magnetic bearing
Core bridge iron core (7), rotor core (11) all use the material with good axially and radially magnetic property to make.
The further Technological improvement plan of the present invention is:
Described left side annular permanent magnet (2), right circular permanent magnet (6) are rare earth permanent-magnetic material and make.
The present invention compared with prior art, has a following obvious advantage:
One, permanent magnet bias single-degree-of-freedom axial magnetic bearing of the present invention, is by the annular permanent magnet 2 and 6 of two axial magnetizeds respectively
Magnetic flux 15,16 and right side biasing magnetic flux 19,20 are provided on the left of offer, control winding 10 and produce control magnetic flux 17 and 21, corresponding positions
The biasing magnetic flux put and control magnetic flux are overlapped mutually, by axial displacement closed loop control, it is ensured that between stator and rotor, air gap is uniform,
Realize rotor axial stable suspersion.
Two, the present invention uses the biasing magnetic flux every magnetic aluminum environmental protection card arranged on left and right sides mutually isolated, reduces leakage field；
Three, magnetic bearing left and right side stator core makes E type structure, controls magnetic flux 17 and 21 merely through controlling disk and suction circle
Dish forms closed path, without the permanent magnet that magnetic resistance is big, has and can produce bigger axial suspension power, low-power consumption, control letter
The advantage such as single and be easily achieved, can be used for flywheel energy storage, various high-speed machine tool spindle motor and canned pump class, centrifuge, compression
The fields such as machine, high-speed small-size hard disk drive.
Accompanying drawing explanation
Fig. 1 is permanent magnet bias single-degree-of-freedom axial magnetic bearing structural representation of the present invention；
Fig. 2 is permanent magnet bias single-degree-of-freedom axial magnetic bearing magnetic circuit schematic diagram of the present invention.
Detailed description of the invention
The present invention based on principle be: the left side annular permanent magnet 2 of axial charging produce on the left of quiescent biasing magnetic flux 14, left
Side quiescent biasing magnetic flux 14, from the N pole of left side annular permanent magnet 2, stator core 3 on the left of magnetic bearing, is divided into two
Point, i.e. magnetic flux 15, magnetic flux 16, suction disk 12 enter axial working gas gap, the radial component of rotor core 11, rotor core
The axial component of 11, left side iron core bridge iron core air gap, left side iron core bridge iron core 1 return to the S pole of left side annular permanent magnet 2, are formed
Closed magnetic circuit.The right circular permanent magnet 6 of axial charging produce on the right side of quiescent biasing magnetic flux 18, right side quiescent biasing magnetic flux 18 from
Setting out in the N pole of right circular permanent magnet 6, stator core 5 on the right side of magnetic bearing are divided into two parts, i.e. magnetic flux 19, magnetic flux 20,
Axial working gas gap, the radial component of rotor core 11, the axial component of rotor core 11, right side ferrum is entered by suction disk 13
Core bridge iron core air gap, right side iron core bridge iron core 7 return to the S pole of right circular permanent magnet 6, form closed magnetic circuit, control winding 10
The left side that energising produces controls magnetic flux 17 and right side controls magnetic flux 21 and plays regulatory role, and is used for changing magnetic bearing rotor core 11 footpath
To the power of the both sides air-gap field of part, by displacement closed loop control, the air gap between keeping stator and rotor axially is uniform, real
Existing rotor axial stable suspersion.
As it is shown in figure 1, the present invention is by stator core on the left of left side iron core bridge iron core 1, left side annular permanent magnet 2, magnetic bearing
3, stator core 5, right circular permanent magnet 6, right side iron core bridge iron core 7 and rotor core 11 groups on the right side of magnetic aluminum ring 4, magnetic bearing
Become.On the left of magnetic bearing, stator core 3 makes E type structure, and middle is suction disk 12 for control disk 8, upper-lower position, at suction
Embedding between disk 12 and control disk 8 and control winding 10, energising produces control magnetic flux 17；On the right side of magnetic bearing, stator core 5 is also
Making E type structure, middle is suction disk 13 for control disk 9, upper-lower position, between suction disk 13 and control disk 9
Embedding and control winding 10, energising produces and controls magnetic flux 21；Control the air gap between disk 8,9 and rotor core 11 radial component long
Degree more than gas length between suction disk 12,13 and rotor core 11 radial component, and stator core 3 on the left of magnetic bearing,
On the right side of magnetic bearing, the gas length between stator core 5 and rotor core 11 axial component is more than suction disk 12,13 and rotor
Gas length between iron core 11 radial component.Determine on the right side of stator core 3, magnetic bearing on the left of left side iron core bridge iron core 1, magnetic bearing
Sub-iron core 5, right side iron core bridge iron core 7 and rotor core 11 are made by the material that axially and radially magnetic property is good, left side
Annular permanent magnet 2, right circular permanent magnet 6 all use axial magnetized, left side annular permanent magnet 2 to be arranged on left side iron core bridge ferrum
On the left of core 1, magnetic bearing between stator core 3, produce quiescent biasing magnetic field 14.Right circular permanent magnet 6 is arranged on right side iron core
On the right side of bridge iron core 7, magnetic bearing between stator core 5, produce quiescent biasing magnetic field 18.Left side iron core bridge iron core 1, right side iron core bridge
Iron core 7 provides magnetic circuit for biasing magnetic flux, and four control winding 10 and winding mode as shown in Figure 1 can be used to be in series, it is only necessary to
One inverter just can realize controlling the regulation of electric current.
As in figure 2 it is shown, quiescent biasing magnetic flux 14 on the left of left side annular permanent magnet 2 generation of axial charging, left side is static partially
Put the magnetic flux 14 N pole from left side annular permanent magnet 2, stator core 3 on the left of magnetic bearing, be divided into two parts, i.e. magnetic flux
15, magnetic flux 16, by suction disk 12 enter axial working gas gap, the radial component of rotor core 11, rotor core 11 axial
Partly, left side iron core bridge iron core air gap, left side iron core bridge iron core 1 return to left side annular permanent magnet 2 S pole, formed closed magnetic circuit.
Quiescent biasing magnetic flux 18 on the right side of right circular permanent magnet 6 generation of axial charging, right side quiescent biasing magnetic flux 18 is from right circular
Setting out in the N pole of permanent magnet 6, stator core 5 on the right side of magnetic bearing are divided into two parts, i.e. magnetic flux 19, magnetic flux 20, justified by suction
Dish 13 enters axial working gas gap, the radial component of rotor core 11, the axial component of rotor core 11, right side iron core bridge iron core
Air gap, right side iron core bridge iron core 7 return to the S pole of right circular permanent magnet, form closed magnetic circuit.Control the left side that winding 10 produces
Controlling magnetic flux 17 and right side controls magnetic flux 21, left side controls magnetic flux 17 through suction disk 12, control disk 8, rotor core 11
Radial component, axial working gas gap formed closed path；Right side control magnetic flux 21 through suction disk 13, control disk 9, turn
The radial component of sub-iron core 11, axial working gas gap forms closed path；Due to every magnetic aluminum ring 4, it is ensured that arranged on left and right sides biasing magnetic
Lead to and do not interfere with each other, and control magnetic flux without annular permanent magnet, reduction power consumption and increase axial suspension power.
This permanent magnet bias single-degree-of-freedom axial magnetic bearing utilizes the annular permanent magnet of two axial chargings to set up biasing
Magnetic flux, stator and rotor iron core made by the material that axially and radially magnetic property is good, and annular permanent magnet uses axial magnetized,
Annular permanent magnet is radial direction annulus, magnetizes vertically, uses rare-earth permanent magnet or ferrite permanent magnet that magnetic property is good, controls
Winding is in series according to direction shown in Fig. 1, invades paint drying and form after using the solenoid coiling of well conducting.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also includes
The technical scheme being made up of above technical characteristic combination in any.It should be pointed out that, for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. a permanent magnet bias single-degree-of-freedom axial magnetic bearing, including stator, rotor core (11), it is characterised in that: described turn
Sub-iron core (11) includes axial component, radial component；Described stator includes the axial component along rotor core (11), and with rotor
The radial component of iron core (11) is symmetrical centre, the most symmetrically arranged left side iron core bridge iron core (1), right side iron core bridge iron core
(7)；Left side annular permanent magnet (2), right circular permanent magnet (6)；Stator on the right side of stator core (3), magnetic bearing on the left of magnetic bearing
Iron core (5)；It is provided with every magnetic aluminum ring (4) between stator core (5) on the right side of stator core (3), magnetic bearing on the left of magnetic bearing；Magnetic axis
On the left of holding, on the right side of stator core (3), magnetic bearing, stator core (5) is all in E shape structure, rotating around being shaped with control winding in stator slot
(10)。
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 1, it is characterised in that: described magnetic bearing
Left side stator core (3), the suction disk (12,13) that stator core (5) is arranged by upper and lower position on the right side of magnetic bearing and in
Control disk (8,9) that meta installs is constituted, control winding (10) be wound in suction disk (12,13) with control disk (8,
9) between.
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 2, it is characterised in that: described control circle
Gas length between dish (8,9) and rotor core (11) radial component is more than suction disk (12,13) and rotor core (11)
Gas length between gas length between radial component, and suction disk (12,13) and rotor core (11) radial component
Less than on the right side of stator core on the left of magnetic bearing (3) and magnetic bearing between stator core (5) and rotor core (11) axial component
Gas length.
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 1 and 2, it is characterised in that: a described left side
Side annular permanent magnet (2), right circular permanent magnet (6) are the annular permanent magnet of axial charging, provide biasing magnetic for magnetic bearing
Logical.
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 1 and 2, it is characterised in that: described every
Magnetic aluminum ring (4) is made up of monoblock aluminium, is spaced by left and right sides magnetic circuit, and reduces leakage field.
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 1 and 2, it is characterised in that: a described left side
Stator core (5), right side iron core bridge iron core (7) on the right side of stator core (3), magnetic bearing on the left of side iron core bridge iron core (1), magnetic bearing
, rotor core (11) all use the material with good the most axially and radially magnetic property to make.
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing the most according to claim 4, it is characterised in that: described left side ring
Shape permanent magnet (2), right circular permanent magnet (6) are rare earth permanent-magnetic material and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610399385.2A CN105840654B (en) | 2016-06-08 | 2016-06-08 | A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610399385.2A CN105840654B (en) | 2016-06-08 | 2016-06-08 | A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840654A true CN105840654A (en) | 2016-08-10 |
| CN105840654B CN105840654B (en) | 2019-05-24 |
Family
ID=56576647
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|---|---|---|---|
| CN201610399385.2A Active CN105840654B (en) | 2016-06-08 | 2016-06-08 | A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327483A (en) * | 2017-07-27 | 2017-11-07 | 江苏大学 | A kind of vehicle-mounted flying wheel battery double sphere hybrid magnetic bearings of alternating current-direct current five degree of freedom |
| CN108757731A (en) * | 2018-06-30 | 2018-11-06 | 淮阴工学院 | A kind of radial-axial Three Degree Of Freedom magnetic bearing of permanent magnet axial magnetized |
| CN108869545A (en) * | 2018-08-31 | 2018-11-23 | 江苏大学 | A kind of axial-radial sextupole hybrid magnetic bearing of inverter-driven |
| CN111434941A (en) * | 2019-01-14 | 2020-07-21 | 坎德拉（深圳）科技创新有限公司 | Hybrid radial magnetic bearing |
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| CN201696489U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | Permanent-magnet offset conical inner rotor mixing governing magnetic bearing |
| CN204186801U (en) * | 2014-09-01 | 2015-03-04 | 江苏大学 | A kind of low power consumption axial hybrid magnetic bearing |
| CN204284204U (en) * | 2014-09-01 | 2015-04-22 | 江苏大学 | A kind of low power consumption permanent magnet biased axial hybrid magnetic bearing |
| CN205663759U (en) * | 2016-06-08 | 2016-10-26 | 淮阴工学院 | Permanent magnetism biasing single degree of freedom axial magnetic bearing |
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2016
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| JPH09133133A (en) * | 1995-11-06 | 1997-05-20 | Hitachi Ltd | Thrust magnetic bearing device |
| EP0844410A1 (en) * | 1996-11-25 | 1998-05-27 | AEROSPATIALE Société Nationale Industrielle | Longitudinally and transversely active magnetic bearing |
| CN101025199A (en) * | 2007-04-02 | 2007-08-29 | 北京航空航天大学 | Permanent magnet polarized internal rotor radial magnetic bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327483A (en) * | 2017-07-27 | 2017-11-07 | 江苏大学 | A kind of vehicle-mounted flying wheel battery double sphere hybrid magnetic bearings of alternating current-direct current five degree of freedom |
| CN108757731A (en) * | 2018-06-30 | 2018-11-06 | 淮阴工学院 | A kind of radial-axial Three Degree Of Freedom magnetic bearing of permanent magnet axial magnetized |
| CN108869545A (en) * | 2018-08-31 | 2018-11-23 | 江苏大学 | A kind of axial-radial sextupole hybrid magnetic bearing of inverter-driven |
| CN108869545B (en) * | 2018-08-31 | 2023-08-22 | 江苏大学 | Inverter driving type axial-radial six-pole hybrid magnetic bearing |
| CN111434941A (en) * | 2019-01-14 | 2020-07-21 | 坎德拉（深圳）科技创新有限公司 | Hybrid radial magnetic bearing |
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| Publication number | Publication date |
|---|---|
| CN105840654B (en) | 2019-05-24 |
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Effective date of registration: 20201228 Address after: 223000 wisdom Valley, Huaian science and Education Industrial Park, No.19, Meigao Road, Huaian Economic Development Zone, Jiangsu Province Patentee after: Huai'an Kechuang Intellectual Property Operation Co.,Ltd. Address before: 223005 Huaian 1 Jiangsu economic and Technological Development Zone Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY Effective date of registration: 20201228 Address after: 211600 east side of 8th floor, No.188 Jinhu West Road, Jinhu County, Huai'an City, Jiangsu Province Patentee after: Central service project of Jinhu County Address before: 223000 wisdom Valley, Huaian science and Education Industrial Park, No.19, Meigao Road, Huaian Economic Development Zone, Jiangsu Province Patentee before: Huai'an Kechuang Intellectual Property Operation Co.,Ltd. |
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