CN105840654B - A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing - Google Patents
A kind of permanent magnet bias single-degree-of-freedom axial magnetic bearing Download PDFInfo
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- CN105840654B CN105840654B CN201610399385.2A CN201610399385A CN105840654B CN 105840654 B CN105840654 B CN 105840654B CN 201610399385 A CN201610399385 A CN 201610399385A CN 105840654 B CN105840654 B CN 105840654B
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- iron core
- magnetic bearing
- permanent magnet
- stator
- core
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000004907 flux Effects 0.000 claims abstract description 44
- 238000004804 winding Methods 0.000 claims abstract description 15
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000005339 levitation Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 10
- 238000007600 charging Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
本发明公开了一种永磁偏置单自由度轴向磁轴承，包括定子、转子铁芯，转子铁芯包括轴向部分、径向部分；所述定子包括沿转子铁芯的轴向部分，并以转子铁芯的径向部分为对称中心，依次对称设置的左侧铁芯桥铁芯、右侧铁芯桥铁芯；左侧环形永磁体、右侧环形永磁体；磁轴承左侧定子铁芯、磁轴承右侧定子铁芯；磁轴承左、右侧定子铁芯之间设置有隔磁铝环；磁轴承左侧定子铁芯、磁轴承右侧定子铁芯均呈E形结构，定子槽内分别绕制有控制绕组；本发明有效解决了现有轴向磁轴承的不足，提供一种控制、制造与装配简单，控制磁通不经过永磁体与转子轴向铁芯，可产生更大轴向悬浮力的低功耗单自由度轴向磁轴承。
The invention discloses a permanent magnet offset single-degree-of-freedom axial magnetic bearing, comprising a stator and a rotor iron core, wherein the rotor iron core includes an axial part and a radial part; the stator includes an axial part along the rotor iron core, And taking the radial part of the rotor core as the center of symmetry, the left iron core bridge iron core, the right iron core bridge iron core, the left annular permanent magnet, the right annular permanent magnet, and the magnetic bearing left stator are arranged symmetrically in turn. The iron core and the right stator core of the magnetic bearing; the magnetic isolation aluminum ring is arranged between the left and right stator cores of the magnetic bearing; the left stator core of the magnetic bearing and the right stator core of the magnetic bearing are all E-shaped structures. Control windings are respectively wound in the stator slots; the invention effectively solves the deficiencies of the existing axial magnetic bearings, provides a simple control, manufacture and assembly, the control magnetic flux does not pass through the permanent magnet and the rotor axial iron core, and can generate Low-power single-degree-of-freedom axial magnetic bearing with greater axial levitation force.
Description
Technical field
The present invention relates to bearing mnanufacture technical field, especially a kind of control, manufacture and assembly are simple, control magnetic flux without
Permanent magnet and rotor axial iron core are crossed, can produce the low power consumption permanent magnet biased single-degree-of-freedom axial direction magnetic axis of bigger axial suspension power
It holds.
Background technique
Magnetic bearing is to make rotor suspension inorganic between stator and rotor in space using the electromagnetic force between stator and rotor
A kind of novel high-performance bearing of tool contact.Since Mechanical Contact being not present between stator and rotor, so magnetic suspension bearing support
Suspension rotor can reach very high operating revolving speed, and with no mechanical wear, low energy consumption, the service life is long, without lubrication, pollution-free
The advantages that, field is directly driven particularly suitable for high speed or ultrahigh speed.
Currently, magnetic bearing is divided into following three kinds in such a way that magnetic force provides:, active magnetic bearings, miscarried by biased electrical
Raw bias magnetic field, the control magnetic flux generated by control electric current is overlapped mutually with biasing magnetic flux, so that controllable suspending power is generated, it should
Kind magnetic bearing volume, weight and power consumption are all bigger；, passive magnetic bearing, suspending power provides by permanent magnet completely, required control
Device processed is simple, suspension small power consumption, but rigidity and damping it is all smaller, generally apply to only supporting object in one direction or
It is to mitigate the load acted on traditional bearing；, hybrid magnetic bearing, be using permanent-magnet material substitution active magnetic bearings in electricity
Magnet generates bias magnetic field, and the control magnetic flux that control electric current only provides balanced load or interferes greatly reduces magnetic bearing
Power loss reduces the volume of magnetic bearing, alleviates its weight, and improve bearing capacity.
Currently, it is different according to permanent-magnetic biased axial magnetic bearing structure type, three kinds can be divided into,, by permanent magnet be placed in turn
In son, its installation difficulty is caused to increase, the promotion of its revolving speed of rotor strength lower limit；, that suspension rotor is placed in by magnetic bearing is fixed
The two sides of son, axial length is long, and critical speed is low；, axial control magnetic flux passes through permanent magnet in magnetic bearing, to permanent magnet in bright
Aobvious demagnetizing effect, leakage field is larger, and the magnetic resistance of permanent magnet is big, causes electric current needed for generating identical axial suspension power big, function
Consumption is high, and 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, the present invention is effective
Solve the deficiency of existing axial magnetic bearing, provide it is a kind of control, manufacture and assembly it is 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 invention is realized by the following technical scheme:
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 core (11) includes axial component, radial component；The stator includes the axial component along rotor core (11), and to turn
The radial component of sub- iron core (11) is symmetrical centre, successively 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 (3), magnetic bearing right side stator on the left of magnetic bearing
Iron core (5)；It is provided between stator core (3), magnetic bearing right side stator core (5) every magnetic aluminium ring (4) on the left of magnetic bearing；Magnetic axis
Stator core (3), magnetic bearing right side stator core (5) are in E shape structure on the left of holding, and are wound with control winding respectively in stator slot
(10)。
The further Technological improvement plan of the present invention is:
The suction that stator core (3), magnetic bearing right side stator core (5) are arranged by upper and lower position on the left of the magnetic bearing
Power disk (12,13) and the control disk (8,9) of middle position setting are constituted, and control winding (10) is wound in suction disk
Between (12,13) and control disk (8,9).
The further Technological improvement plan of the present invention is:
It is described control disk (8,9) and rotor core (11) radial component between gas length greater than suction disk (12,
13) gas length between rotor core (11) radial component, and suction disk (12,13) and rotor core (11) radial part
/ gas length be less than stator core (3) and magnetic bearing right side stator core (5) and rotor core on the left of magnetic bearing
(11) gas length between axial component.
The further Technological improvement plan of the present invention is:
The left side annular permanent magnet (2), right circular permanent magnet (6) are the annular permanent magnet of axial charging, are magnetic
Bearing provides biasing magnetic flux.
The further Technological improvement plan of the present invention is:
It is described to be made every magnetic aluminium ring (4) of monolith aluminium, left and right sides magnetic circuit is spaced, and reduce leakage field.
The further Technological improvement plan of the present invention is:
Stator core (3), magnetic bearing right side stator core (5), the right side on the left of the left side iron core bridge iron core (1), magnetic bearing
Side iron core bridge iron core (7), rotor core (11) are all made of the material with good axially and radially magnetic property and are made.
The further Technological improvement plan of the present invention is:
The left side annular permanent magnet (2), right circular permanent magnet (6) are that rare earth permanent-magnetic material is made.
Compared with prior art, the present invention having following obvious advantage:
One, permanent magnet bias single-degree-of-freedom axial magnetic bearing of the present invention is the annular permanent magnet 2 and 6 by two axial magnetizeds
Left side biasing magnetic flux 15,16 is provided respectively and right side biases magnetic flux 19,20, control winding 10 generates control magnetic flux 17 and 21, phase
The biasing magnetic flux and control magnetic flux for answering position are overlapped mutually, and by axial displacement closed-loop control, guarantee that air gap is equal between stator and rotor
It is even, realize rotor axial stable suspersion.
Two, the present invention guarantees that the biasing magnetic flux of arranged on left and right sides is mutually isolated using every magnetic aluminium ring, reduces leakage field；
Three, E type structure is made in magnetic bearing left and right side stator core, and control magnetic flux 17 and 21 is merely through control disk and suction
Power disk forms closed path, and without the big permanent magnet of magnetic resistance, having can produce biggish axial suspension power, low-power consumption, control
System is simply and the advantages that be easily achieved, can be used for flywheel energy storage, various high-speed machine tool spindle motors and canned pump class, centrifuge,
The fields such as compressor, high-speed small-size hard disk drive.
Detailed description of the invention
Fig. 1 is permanent magnet bias single-degree-of-freedom axial magnetic bearing structural schematic diagram 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.
Specific embodiment
The present invention is based on principle be: the left side annular permanent magnet 2 of axial charging generates left side quiescent biasing magnetic flux 14, left
Side quiescent biasing magnetic flux 14 is divided into two by stator core 3 on the left of magnetic bearing from the pole N of left side annular permanent magnet 2
Divide, i.e. magnetic flux 15, magnetic flux 16, axial working gas gap, the radial component of rotor core 11, rotor core are entered by suction disk 12
11 axial component, left side iron core bridge iron core air gap, left side iron core bridge iron core 1 return to the pole S of left side annular permanent magnet 2, are formed
Closed magnetic circuit.The right circular permanent magnet 6 of axial charging generates right side quiescent biasing magnetic flux 18, right side quiescent biasing magnetic flux 18 from
The pole N of right circular permanent magnet 6 is set out, and by stator core 5 on the right side of magnetic bearing, is 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 iron are entered by suction disk 13
Core bridge iron core air gap, right side iron core bridge iron core 7 return to the pole S of right circular permanent magnet 6, form closed magnetic circuit, control winding 10
The left side control magnetic flux 17 generated that is powered and right side control magnetic flux 21 play regulatory role, for changing 11 diameter of magnetic bearing rotor core
Keep the air gap between stator and rotor axial direction uniform, in fact by being displaced closed-loop control to the power of the two sides air-gap field of part
Existing rotor axial stable suspersion.
As 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 11 groups of rotor core on the right side of magnetic aluminium ring 4, magnetic bearing
At.E type structure is made in stator core 3 on the left of magnetic bearing, and centre is suction disk 12 for control disk 8, upper and lower position, in suction
It is embedded in control winding 10 between disk 12 and control disk 8, is powered and generates control magnetic flux 17；Stator core 5 on the right side of magnetic bearing
E type structure is made, centre is suction disk 13 for control disk 9, upper and lower position, between suction disk 13 and control disk 9
It is embedded in control winding 10, is powered and generates control magnetic flux 21；The air gap controlled between disk 8,9 and 11 radial component of rotor core is long
Degree be greater than 11 radial component of suction disk 12,13 and rotor core between gas length, and magnetic bearing on the left of stator core 3,
Gas length on the right side of magnetic bearing between stator core 5 and 11 axial component of rotor core is greater than suction disk 12,13 and rotor
Gas length between 11 radial component of iron core.Stator core 3, magnetic bearing right side are fixed 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 of the good material of axially and radially magnetic property, left side
Annular permanent magnet 2, right circular permanent magnet 6 are all made of axial magnetized, and left side annular permanent magnet 2 is mounted on left side iron core bridge iron
On the left of core 1, magnetic bearing between stator core 3, quiescent biasing magnetic field 14 is generated.Right circular permanent magnet 6 is mounted on right side iron core
On the right side of bridge iron core 7, magnetic bearing between stator core 5, quiescent biasing magnetic field 18 is generated.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 windings 10 can be used winding mode as shown in Figure 1 and be connected in series, it is only necessary to
One inverter can realize the adjusting of control electric current.
As shown in Fig. 2, the left side annular permanent magnet 2 of axial charging generates left side quiescent biasing magnetic flux 14, left side is static partially
N pole of the magnetic flux 14 from left side annular permanent magnet 2 is set, by stator core 3 on the left of magnetic bearing, is divided into two parts, i.e. magnetic flux
15, magnetic flux 16 are entered the axial direction of axial working gas gap, the radial component of rotor core 11, rotor core 11 by suction disk 12
Partially, left side iron core bridge iron core air gap, left side iron core bridge iron core 1 return to the pole S of left side annular permanent magnet 2, form closed magnetic circuit.
The right circular permanent magnet 6 of axial charging generates right side quiescent biasing magnetic flux 18, and right side quiescent biasing magnetic flux 18 is from right circular
The pole N of permanent magnet 6 is set out, and by stator core 5 on the right side of magnetic bearing, is divided into two parts, i.e., magnetic flux 19, magnetic flux 20, justified by suction
Disk 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 pole S of right circular permanent magnet, form closed magnetic circuit.The left side that control winding 10 generates
Control magnetic flux 17 and right side control magnetic flux 21, left side control magnetic flux 17 is by suction disk 12, control disk 8, rotor core 11
Radial component, axial working gas gap forms closed path；Right side control magnetic flux 21 is passed through suction disk 13, control disk 9, is turned
The radial component of sub- iron core 11, axial working gas gap form closed path；Due to guaranteeing that arranged on left and right sides biases magnetic every magnetic aluminium ring 4
It is logical not interfere with each other, and control magnetic flux reduces power consumption and increases axial suspension power without annular permanent magnet.
This permanent magnet bias single-degree-of-freedom axial magnetic bearing establishes biasing using the annular permanent magnet of two axial chargings
Magnetic flux, stator and rotor iron core are made of the good material of axially and radially magnetic property, and annular permanent magnet uses axial magnetized,
Annular permanent magnet is radial annulus, along axial charging, using the good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, control
Winding is connected in series according to direction shown in Fig. 1, is dried using paint is invaded after the electromagnetic coil coiling of well conducting.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
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 |
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| Publication Number | Publication Date |
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| CN105840654A CN105840654A (en) | 2016-08-10 |
| CN105840654B true CN105840654B (en) | 2019-05-24 |
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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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327483B (en) * | 2017-07-27 | 2019-02-05 | 江苏大学 | A kind of AC-DC five-degree-of-freedom double spherical hybrid magnetic bearing for vehicle-mounted flywheel battery |
| 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 |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09133133A (en) * | 1995-11-06 | 1997-05-20 | Hitachi Ltd | Thrust magnetic bearing device |
| FR2756335B1 (en) * | 1996-11-25 | 1999-02-12 | Aerospatiale | MAGNETIC BEARING LONGITUDINALLY AND TRANSVERSELY ACTIVE |
| CN100451365C (en) * | 2007-04-02 | 2009-01-14 | 北京航空航天大学 | Permanent magnet polarized internal rotor radial magnetic bearing |
| CN101149077B (en) * | 2007-11-07 | 2010-09-29 | 南京航空航天大学 | Permanent Magnet Offset Axial Radial Magnetic Bearings |
| CN201696489U (en) * | 2010-05-24 | 2011-01-05 | 山东科技大学 | A permanent magnet biased conical inner rotor hybrid adjustable 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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