CN101985956B - Flat type vertical coil inner rotor hybrid magnetic bearing - Google Patents
Flat type vertical coil inner rotor hybrid magnetic bearing Download PDFInfo
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- CN101985956B CN101985956B CN 201010519402 CN201010519402A CN101985956B CN 101985956 B CN101985956 B CN 101985956B CN 201010519402 CN201010519402 CN 201010519402 CN 201010519402 A CN201010519402 A CN 201010519402A CN 101985956 B CN101985956 B CN 101985956B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0487—Active magnetic bearings for rotary movement with active support of four degrees of freedom
-
- 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
- F16C32/0459—Details of the magnetic circuit
Abstract
The invention relates to a flat type vertical coil inner rotor hybrid magnetic bearing, which is characterized by comprising a four-shaft hybrid magnetic bearing formed by two two-shaft unilateral vertical coil hybrid magnetic bearings arranged in a up-down symmetry mode, wherein each two-shaft unilateral vertical coil hybrid magnetic bearing comprises a rotor and a stator; the rotor comprises an inner magnet conductive ring and a rotor steel core; the stator comprises a stator disc, multiple coil steel cores and multiple electromagnetic coils, wherein the stator disc comprises multiple magnetic poles uniformly distributed; the multiple coil steel cores are arranged on the outer side of the stator disc and are uniformly distributed along the circumference of the stator disc; each coil steel core corresponds to the part of one magnetic pole; the multiple electromagnetic coils are respectively and perpendicularly sheathed on each coil steel core; the rotor is arranged in the the stator; and the multiple magnetic poles are connected at the part of the inner edges to form an integral circular ring. The invention adopts the two two-shaft unilateral vertical coil hybrid magnetic bearings to form the four-shaft hybrid magnetic bearing so that the structure is more compact; and the magnetic poles mutually parted in the prior art are connected in the part of the inner edges to form the integral circular ring so that the eddy current loss and the retardation moment of the rotor when operating are reduced.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, especially relate to a kind of tablet four axle hybrid magnetic bearings with vertical coil and internal rotor, it can be used as the contactless support of rotary component, particularly as the highi degree of accuracy of space system, the support mechanism of low noise attitude control flywheel.
Background technique
The loss of magnetic bearing is an important overall target, directly has influence on its application.Magnetic bearing can be divided into passive magnetic bearing, active magnetic bearings and hybrid magnetic bearing according to the magnetic force presentation mode.The stable region of passive magnetic bearing is very little; Active magnetic bearings must be set bias current and comes to provide the operation point to magnetic bearing in electromagnetic coil, therefore control electric current large, and power consumption is large; And hybrid magnetic bearing engages permanent magnet bias with Electromagnetic Control, wherein permanent magnet provides main magnetic flux and the offset operation point magnetic field of magnetic circuit, electromagnetic coil provides the adjusting magnetic flux of magnetic circuit, make rotor be in the equilibrium position by certain control law, can significantly reduce to control electric current, reduce power consumption, thereby be particularly suitable for the demanding space of power consumption with applications such as flywheels.
Yet, it (is that the two is an integral body that the magnetic bobbin core of present permanent magnet offset radial hybrid magnetic bearing adopts integrative-structure with the work magnetic pole, particularly, going up exactly magnetic bobbin core and upper magnetic conduction pole plate is an integral body, and lower coil iron core and lower magnetic conduction pole plate are an integral body).And, in existing hybrid magnetic bearing structure, magnetic pole is separated from each other at circumferencial direction, because this field structure that is separated from each other, causing its radial magnetic field is (being that magnetic field is heterogeneous) that alternately changes in the circumferential direction of the circle, cause rotor when High Rotation Speed, the magnetic flux by the rotor core circumferential surface is by N frequency multiplication (N the equals number of magnetic poles) cyclically-varying of rotating speed, and the eddy current loss of bringing thus be can not ignore.
Although the lamination of rotor core can reduce eddy current loss to a certain extent, and the lamination thickness that further reduces rotor core can significantly reduce eddy current loss, the problem that can bring the magnetic bearing support strength to weaken like this.
Therefore, for the high speed flywheel rotor, also there is obvious technical disadvantages in present hybrid magnetic bearing: at first, the eddy current of rotor core will produce significantly retardance moment, control with AEROSPACE APPLICATION occasions such as magnetically levitated flywheels in attitude, the power consumption of drive motor be will significantly increase, and stability and the precision of satellite attitude control affected; Secondly, when in the housing that high speed rotor is enclosed in high vacuum in order to reduce windage loss, excessive eddy current loss also will increase the difficulty of rotor dispersing thermal design; Again, four axle magnetic bearings adopt 2 bilateral coil magnetic bearing combinations, make the height of magnetic bearing larger, and especially vertical coil can further increase the whole height of magnetic bearing, thereby causes the increase of volume and the increase of quality.In addition, the magnetic bobbin core of present hybrid magnetic bearing adopts integrative-structure with the work magnetic pole, also has complex structure, can not take full advantage of the shortcomings such as circumferential area of magnetic pole.
Summary of the invention
The technical problem to be solved in the present invention is, for internal rotor magnetic bearing structure, overcomes that magnetic bearing complex structure, quality are large, an energy consumption high-technology difficult problem, simplifies the magnetic bearing structure, reduces the magnetic bearing quality, reduces magnetic bearing suspension energy consumption.Therefore, the invention provides the hybrid magnetic bearing that a kind of quality is light, volume is little, energy consumption is low, this is a kind of tablet hybrid magnetic bearing that includes vertical coil, uniform radial pole and internal rotor.
To achieve the above object of the invention, technical solution of the present invention is: a kind of tablet vertical coil internal rotor hybrid magnetic bearing, it is the four axle hybrid magnetic bearings that are made of the monolateral vertical coil hybrid magnetic bearing of symmetrically arranged diaxon about in the of 2, and the monolateral vertical coil hybrid magnetic bearing of each described diaxon comprises rotor and stator.This rotor comprises: interior magnetic guiding loop; Rotor core, coaxial line are sleeved on the outside of magnetic guiding loop in this.This stator comprises: stator disc includes a plurality of equally distributed magnetic poles; A plurality of magnetic bobbin cores are arranged on the outside of this stator disc and along circumferentially evenly the distributing of this stator disc, and each magnetic bobbin core is corresponding with the position of 1 magnetic pole; And a plurality of electromagnetic coils, vertical sleeve is contained on each magnetic bobbin core respectively; And described rotor is arranged on the inboard of described stator.Wherein, described a plurality of magnetic pole is at the continuous as a whole annulus of inside edge.
According to an embodiment of tablet vertical coil internal rotor hybrid magnetic bearing of the present invention, described stator disc is circular, and it comprises: upper magnetic conduction pole plate; Lower magnetic conduction pole plate is positioned at described upper magnetic conduction pole plate below; The mounting disc of magnetic post is arranged between described upper magnetic conduction pole plate and the lower magnetic conduction pole plate, and this magnetic post mounting disc is magnetic conduction not; And a plurality of permanent magnets, evenly being embedded in the mounting disc of described magnetic post, described permanent magnet axially magnetizes in the same way along described stator disc; And described upper magnetic conduction pole plate and lower magnetic conduction pole plate be evenly divided into respectively 4 magnetic poles radially along the circumference, and the magnetic pole of each described lower magnetic conduction pole plate is set to the magnetic pole of corresponding described upper magnetic conduction pole plate symmetrical up and down.
Be connected by passage at inside edge respectively between the adjacent pole of 4 magnetic poles of described upper magnetic conduction pole plate and between the adjacent pole of 4 magnetic poles of described lower magnetic conduction pole plate, wherein this passage is formed by the magnet case with small cross-sectional area.
The intermediate portion of the stator disc 24 of the invention described above magnetic bearing is that magnetic post mounting disc 242 and one group are by the equally distributed circle of position of magnetic pole or fan-shaped column permanent magnet.The permanent magnet of same set of diaxon magnetic bearing magnetizes vertically in the same way, and the permanent magnet magnetizing direction of magnetic bearing is opposite up and down.Permanent magnet up and down two ends is magnetic conduction pole plates (namely going up magnetic conduction pole plate 241 and lower magnetic conduction pole plate 243) of symmetrical configuration.Every magnetic conduction pole plate is evenly divided into four field structures radially along the circumference.Each magnetic pole is corresponding with an electromagnetic coil, and the plane of magnetic conduction pole plate is vertical with the magnetic bobbin core axis.At the inner edge of magnetic conduction pole plate, the magnet case by small cross-sectional area between the adjacent pole is connected, and 4 magnetic poles connect into the annulus of an integral body at the inner edge place.Therefore, when rotor was in the equilibrium position, the radial permanent magnet bias magnetic field of working gas gap was that the radial permanent magnet magnetic flux is reduced to minimum level in the eddy current loss that rotor core produces uniformly at whole circumferential surface.The present invention adopts the rotor core of lamination, the eddy current loss of the magnetic bearing rotor core that permanent magnet flux disturbance and coil control flux change is brought when being used for further reducing rotor and departing from the equilibrium position.
The present invention is connected to a whole annulus with the common separated magnetic pole of magnetic bearing at inside edge, because the permanent magnet of same set of diaxon magnetic bearing is axially magnetizing in the same way, the magnetic flux that permanent magnet produces passes in and out rotor core by radial direction through working gas gap at the magnetic pole inner edge.Therefore, when rotor was in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap was uniformly at whole circumferential surface, thereby eddy current loss and retardance moment during with rotor operation are reduced to minimum level.The magnetic flux that electromagnetic coil produces is pressed radial direction in the turnover rotor core of work gas gap at the magnetic pole inner edge, also has sub-fraction electromagnetism magnetic flux along circumferentially entering adjacent pole through leading pole panel edges attachment portion.Because the joint sectional area is less, even if therefore less magnetic flux also produces very large Magnetic flux density, make the circumferential magnetic circuit of pole edge attachment portion saturated, that is to say, the small cross-sectional area magnet case of passage 8 also can be so that the circumferential magnetic circuit of pole edge attachment portion be saturated under less magnetic flux.Like this, can guarantee that the Electromagnetic Control magnetic circuit coupling effect of each magnetic pole is very little, can not exert an influence to control characteristic.
Compared with prior art, the invention has the advantages that: adopt 2 monolateral coil diaxon magnetic bearings to be combined into four axle magnetic bearings, reduced coil quantity, reduced height and the structure complexity of magnetic bearing, alleviated the quality of magnetic bearing; Adopt vertical coil uniform radial pole structure, the magnetic pole of separated magnetic bearing in the prior art is connected to a whole annulus at inside edge, when rotor is in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap is uniformly at whole circumferential surface, and eddy current loss and retardance moment from the source during with rotor operation have been reduced to minimum level; The magnetic bobbin core of magnetic bearing of the present invention structurally separates with magnetic pole, processes and assemble more convenient, and makes magnetic pole can take full advantage of its circumferential area, increases bearing capacity.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of magnetic bearing of the present invention;
Fig. 2 is the structural representation of the up/down magnetic conduction pole plate of magnetic bearing shown in Figure 1;
Fig. 3 is the partial structurtes schematic perspective view of up/down magnetic conduction pole plate shown in Figure 2;
Fig. 4 is magnetic circuit figure of the present invention.
Wherein, description of reference numerals is as follows:
The 1-rotor,
The 11-rotor core,
Magnetic guiding loop in the 12-,
The 2-stator,
The 21-electromagnetic coil,
The 22-magnetic bobbin core,
23-magnetic conduction cover plate,
The 24-stator disc,
The upper magnetic conduction pole plate of 241-,
The mounting disc of 242-magnetic post,
Magnetic conduction pole plate under the 243-,
The 244-permanent magnet,
The 25-connecting rod,
The 26-through hole
The 3-working gas gap,
The 4-spacer ring,
The 5-spacer ring,
The 6-electromagnetic circuit,
The 7-permanent magnetic circuit,
The 8-passage,
The 9-magnetic pole.
Embodiment
Below in conjunction with drawings and Examples the present invention is specifically described.
Referring to Fig. 1, tablet vertical coil internal rotor hybrid magnetic bearing of the present invention is a kind of tablet low-loss four axle hybrid magnetic bearings that include vertical coil, uniform radial pole and internal rotor, consist of this four axles hybrid magnetic bearing by 2 monolateral vertical coil hybrid magnetic bearings of identical diaxon up and down, metal (upper is symmetrical to be placed, and the centre is separated by spacer ring 4 and spacer ring 5.
The monolateral vertical coil hybrid magnetic bearing of each described diaxon is comprised of rotor 1 and stator 2.The inside that rotor 1 is contained in stator 2 consists of internal rotor.Rotor 1 is made of rotor core 11 and interior magnetic guiding loop 12, and wherein rotor core 11 coaxial lines are sleeved on the outside of interior magnetic guiding loop 12.The rotor core 11 of rotor 1 adopts good sheet-type soft magnetic material (such as the electrical steel plate) punching press of a kind of magnetic property to fold and form.
Leave gap (being working gas gap 3) between the outer ring surface of the inner ring surface of the stator disc 24 of stator 2 and the rotor core 11 of rotor 1.
The interior magnetic guiding loop 12 of the magnetic conduction cover plate 23 of stator 2, upper magnetic conduction pole plate 241, lower magnetic conduction pole plate 243 and rotor 1 all adopts the good soft magnetic material of magnetic property to process.Described permanent magnet 244 rounded or fan-shaped columns, the good rare-earth permanent magnet of employing magnetic is made and is axially magnetized in the same way.Described magnetic post mounting disc 242 adopts non-magnetic alloy material aluminum alloy or titanium alloy to make.Paint-dipping drying formed after described electromagnetic coil 21 adopted the good enameled cable coiling of electric conductivity.
4 vertical electromagnetic coils 21 of placing place between magnetic conduction cover plate 23 and the stator disc 24.
As shown in Figure 2, corresponding to a plurality of permanent magnets 244 that evenly are arranged between upper magnetic conduction pole plate 241 and the lower magnetic conduction pole plate 243, every magnetic conduction pole plate (namely going up magnetic conduction pole plate 241 and lower magnetic conduction pole plate 243) is evenly divided into respectively 4 magnetic poles 9 radially along the circumference, and 4 magnetic poles 9 of upper magnetic conduction pole plate 231 are symmetrical about in the of 9 with 4 magnetic poles of lower magnetic conduction pole plate 233.
Described magnetic bobbin core 22 adopts Split type structures with described 4 magnetic poles 9, and namely described magnetic bobbin core 22 and the up/down magnetic conduction pole plate that consists of described magnetic pole 9 are separable independent components each other, and links together by connecting rod 25.
Described magnetic post mounting disc 242 mainly contains the effect of two aspects: it is an important structural member for (1), be used for basically being location and fixed permanent magnet 244 between the whole circular up/down magnetic conduction pole plate, also bear simultaneously the up and down pressure between the magnetic conduction pole plate, protection permanent magnet 244 makes it not crushed; (2) because each magnetic pole 9 can corresponding polylith permanent magnet 244, utilize this magnetic post mounting disc 242 to make up configuration to the polylith permanent magnet, take full advantage of the sectional area of permanent magnet, be conducive to produce at the working gas gap place even offset magnetic field.
Inner edge at the magnetic conduction pole plate, between the adjacent pole of 4 magnetic poles 9 of described upper magnetic conduction pole plate 241 and between the adjacent pole of 4 magnetic poles 9 of lower magnetic conduction pole plate 243 respectively the magnet case (being passage 8) by small cross-sectional area be connected, so that 4 magnetic poles 9 of upper magnetic conduction pole plate 241 are linked to be a whole annulus at the inner edge place, 4 magnetic poles 9 of lower magnetic conduction pole plate 243 equally also connect into a whole annulus at the inner edge place.Thereby when rotor was in the equilibrium position, the radial permanent magnet magnetic flux of working gas gap was uniform at whole circumferential surface.
Described passage 8 should be tried one's best in the radially residing position of up/down magnetic conduction pole plate near the setting position of rotor 1, namely, the passage corresponding with internal rotor should be arranged on the inner edge of magnetic conduction pole plate, the passage corresponding with external rotor should be arranged on the outer rim of magnetic conduction pole plate, and guarantee forms uniform magnetic field in air gap and rotor like this.As shown in Figure 4, consisted of the permanent magnetic circuit 7 of magnetic bearing by permanent magnet 244, upper magnetic conduction pole plate 241, lower magnetic conduction pole plate 243, rotor 1 and air gap 3; Consisted of the electromagnetic circuit 6 of magnetic bearing by electromagnetic coil 21, magnetic bobbin core 22, magnetic conduction cover plate 23, upper magnetic conduction pole plate 241, air gap 3 and rotor 1.
For the passage 8 that is communicated with between the adjacent pole 9, permanent magnet 244 can form even offset magnetic field in the time of should guaranteeing that rotor is in the equilibrium position to the setting of its concrete structure size in working gas gap 3, guarantees that again the magnetic excitation circuit that electromagnetic coil produces is separate.From the angle of energy loss, the more large permanent magnet 244 that more is conducive to of connection area forms even offset magnetic field, reduces eddy current loss; From the angle of control, connection area is more little, and more to be conducive to magnetic excitation circuit separate, is convenient to the control of magnetic bearing.The many factors such as material of the size of passage connection area and permanent magnet material and sectional area, magnetic conduction pole plate are relevant.The sectional area of suitable passage 8 is about 1%～15% of single magnetic pole area, and more excellent scope is 2%～4%.
The partial structurtes schematic perspective view of up/down magnetic conduction pole plate as shown in Figure 3, it represents an example of up/down magnetic conduction pole plate of the present invention, wherein, the area S1 of the working surface of each magnetic pole 9 (1/4 cylindrical side) (being single magnetic pole area) is 251.3mm
2, the sectional area S2 of passage 8 is 8mm
2, be about each magnetic pole 9 working surface area S1 3.2%.For example, for example shown in Figure 3, when the size of passage 8 was suitable, by finite element numerical result of calculation as can be known, the Magnetic flux density in permanent magnet bias magnetic field minimum was 0.746T in the air gap 3, is 0.751T to the maximum.
What form therewith significantly contrast is, when linking to each other without passage 8 between each adjacent pole 9, by finite element numerical result of calculation as can be known, the Magnetic flux density in the permanent magnet bias magnetic field in the local gaps corresponding with the interval of magnetic pole 9 is less, be about 0.262T, remaining part is about 0.754T.
Can find out, when between adjacent pole 9, having the suitable passage of size 8 to be communicated with, can significantly improve the uniformity of the magnetic flux distribution in permanent magnet bias magnetic field in the air gap 3.
Permanent magnetic circuit 7 also provides the passive stabilization of rotor axial motion except providing the operation point for magnetic bearing.Therefore, tablet vertical coil internal rotor hybrid magnetic bearing structure shown in Figure 1 can consist of a kind of radially four axle ACTIVE CONTROL hybrid magnetic bearings.
According to the embodiments of the invention shown in Fig. 1-Fig. 4 and to these embodiments' associated description, can find out: 2 diaxon hybrid magnetic bearings that consist of four axle hybrid magnetic bearings of the present invention all adopt monolateral loop construction, namely only at the one-sided magnetic conduction cover plate 23 that arranges, magnetic bobbin core 22 and electromagnetic coil 21, and set gradually from top to bottom the magnetic conduction cover plate 23 of a diaxon hybrid magnetic bearing, magnetic bobbin core 22 and be set with electromagnetic coil 21 and stator disc 24 on it, and the stator disc 24 of another diaxon hybrid magnetic bearing, magnetic bobbin core 22 and be set with electromagnetic coil 21 and magnetic conduction cover plate 23 on it.
Between the lower magnetic conduction pole plate 243 of the stator 2 of 2 described diaxon hybrid magnetic bearings, separated by spacer ring 4, between the rotor 1 of 2 described diaxon hybrid magnetic bearings, separated by spacer ring 5.
The magnetic conduction cover plate 23 of a diaxon hybrid magnetic bearing, magnetic bobbin core 22, stator disc 24 and be connected stator disc 24, magnetic bobbin core 22, magnetic conduction cover plate 23 circumferentially connecting successively by 4 connecting rods 25 respectively along described magnetic conduction cover plate 23 of diaxon hybrid magnetic bearing.
Working principle of the present invention is: permanent magnet 244 provides the biasing magnetic flux for the radially working gas gap 3 between internal rotor 1 and the external stator 2, produces the required radial force of magnetic bearing static suspension.When left and right sides air gap equated, the radial force that two relative magnetic poles produce was cancelled out each other, and rotor 1 is in the equilibrium position.When rotor 1 had radial displacement left, the left side air gap reduced, thereby the left side permanent magnet flux increases and suction becomes large, and the right side air gap becomes large simultaneously, and the right side permanent magnet flux reduces and suction diminishes, and it is mobile to the left that the result can make rotor 1 continue.In order to suppress this imbalance, electromagnetic coil 21 produces electromagnetism magnetic flux and the stack of permanent magnet bias magnetic flux, plays the effect that weakens the left side air-gap flux, strengthens the right side air-gap flux, thereby produce control force rotor 1 is retracted the equilibrium position.
When rotor 1 had axial displacement, the magnetic line of force between rotor 1 and the stator 2 twisted and produces axially stable restoring force, made rotor 1 axially obtain driven suspension.
Claims (10)
1. tablet vertical coil internal rotor hybrid magnetic bearing, it is that the monolateral vertical coil hybrid magnetic bearing of each described diaxon comprises by 2 four axle hybrid magnetic bearings of consisting of of the monolateral vertical coil hybrid magnetic bearing of symmetrically arranged diaxon up and down:
Rotor (1) comprising:
Interior magnetic guiding loop (12);
Rotor core (11), coaxial line are sleeved on magnetic guiding loop (12) outside in this; And
Stator (2) comprising:
Stator disc (24) includes a plurality of equally distributed magnetic poles (9);
A plurality of magnetic bobbin cores (22) are arranged on the outside of this stator disc (24) and along circumferentially evenly the distributing of this stator disc (24), and each magnetic bobbin core (22) is corresponding with the position of 1 magnetic pole (9); And
A plurality of electromagnetic coils (21), vertical sleeve is contained on each magnetic bobbin core (22) respectively; And
Described rotor (1) is arranged on the inboard of described stator (2).
2. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 1, wherein, described a plurality of magnetic poles (9) are at the inside edge as a whole annulus that links to each other.
3. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 1, wherein, described stator disc (24) is circular, and it comprises:
Upper magnetic conduction pole plate (241);
Lower magnetic conduction pole plate (243) is positioned at described upper magnetic conduction pole plate (241) below;
Magnetic post mounting disc (242) is arranged between described upper magnetic conduction pole plate (241) and the lower magnetic conduction pole plate (243), and this magnetic post mounting disc (242) is magnetic conduction not; And
A plurality of permanent magnets (244) are evenly embedded in described magnetic post mounting disc (242), described permanent magnet (244) axially magnetizing in the same way along described stator disc (24); And
Described upper magnetic conduction pole plate (241) and lower magnetic conduction pole plate (243) are evenly divided into respectively 4 magnetic poles (9) radially along the circumference, and the magnetic pole of each described lower magnetic conduction pole plate (243) is set to the magnetic pole of corresponding described upper magnetic conduction pole plate (241) symmetrical up and down.
4. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 3, wherein, be connected by passage (8) at inside edge respectively between the adjacent pole of 4 magnetic poles (9) of described upper magnetic conduction pole plate (241) and between the adjacent pole of 4 magnetic poles (9) of described lower magnetic conduction pole plate (243), wherein this passage (8) is formed by the magnet case with small cross-sectional area.
5. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 3, wherein, between the outer ring surface of the rotor core (11) of the inner ring surface of the stator disc (24) of described stator (2) and described rotor (1), has working gas gap (3).
6. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 5, wherein, described stator (2) also comprises magnetic conduction cover plate (23), is arranged on the described magnetic bobbin core (22); And
The number of described magnetic bobbin core (22) is 4, and the number of described electromagnetic coil (21) also is 4.
7. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 6, wherein,
Described upper magnetic conduction pole plate (241), permanent magnet (244), lower magnetic conduction pole plate (243), air gap (3) and rotor (1) consist of permanent magnetic circuit (7); And
Described magnetic conduction cover plate (23), magnetic bobbin core (22), electromagnetic coil (21), air gap (3), rotor (1) and upper magnetic conduction pole plate (241) consist of electromagnetic circuit (6).
8. the described tablet vertical coil of any one internal rotor hybrid magnetic bearing in 7 according to claim 1, wherein, described rotor core (11) comprises that upper rotor part is unshakable in one's determination and lower rotor part is unshakable in one's determination, and described upper rotor part iron core and lower rotor part iron core all have lamination.
9. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 6, wherein,
2 diaxon hybrid magnetic bearings that consist of described four axle hybrid magnetic bearings all adopt monolateral loop construction, only at the described magnetic conduction cover plate of one-sided placement (23), described magnetic bobbin core (22) and described electromagnetic coil (21), and set gradually from top to bottom the magnetic conduction cover plate (23) of a diaxon hybrid magnetic bearing, magnetic bobbin core (22) and be set with electromagnetic coil (21) and stator disc (24) on it, the stator disc of another diaxon hybrid magnetic bearing (24), magnetic bobbin core (22) and be set with electromagnetic coil (21) and magnetic conduction cover plate (23) on it;
Between the stator disc (24) of the stator (2) of 2 described diaxon hybrid magnetic bearings, separated by spacer ring (4), between the rotor (1) of 2 described diaxon hybrid magnetic bearings, separated by spacer ring (5).
10. tablet vertical coil internal rotor hybrid magnetic bearing according to claim 9, wherein,
The magnetic conduction cover plate (23) of a diaxon hybrid magnetic bearing, magnetic bobbin core (22), stator disc (24) and be connected stator disc (24), magnetic bobbin core (22), magnetic conduction cover plate (23) circumferentially connecting successively by 4 connecting rods (25) respectively along described magnetic conduction cover plate (23) of diaxon hybrid magnetic bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519402 CN101985956B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil inner rotor hybrid magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519402 CN101985956B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil inner rotor hybrid magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101985956A CN101985956A (en) | 2011-03-16 |
| CN101985956B true CN101985956B (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010519402 Expired - Fee Related CN101985956B (en) | 2010-10-26 | 2010-10-26 | Flat type vertical coil inner rotor hybrid magnetic bearing |
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| CN (1) | CN101985956B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107327488B (en) * | 2017-08-29 | 2023-03-28 | 南京磁谷科技有限公司 | Mounting base for magnetic pole in inclined magnetic bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816701A1 (en) * | 1996-07-05 | 1998-01-07 | AEROSPATIALE Société Nationale Industrielle | Langitudinally and transversely active 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 |
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| CN1995770A (en) * | 2007-01-05 | 2007-07-11 | 北京航空航天大学 | PM offset inner rotor radial mixed magnetic bearing with redundant structure |
| CN101696713A (en) * | 2009-10-15 | 2010-04-21 | 山东科技大学 | Radial magnetic bearing of low-power consumption inner rotor of permanent-magnetic up-attracting and down-repelling structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136609A (en) * | 1996-10-31 | 1998-05-22 | Seiko Epson Corp | Motor and storage apparatus using the wire |
-
2010
- 2010-10-26 CN CN 201010519402 patent/CN101985956B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816701A1 (en) * | 1996-07-05 | 1998-01-07 | AEROSPATIALE Société Nationale Industrielle | Langitudinally and transversely active 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 |
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| CN1995770A (en) * | 2007-01-05 | 2007-07-11 | 北京航空航天大学 | PM offset inner rotor radial mixed magnetic bearing with redundant structure |
| CN101696713A (en) * | 2009-10-15 | 2010-04-21 | 山东科技大学 | Radial magnetic bearing of low-power consumption inner rotor of permanent-magnetic up-attracting and down-repelling structure |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-136609A 1998.05.22 |
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| CN101985956A (en) | 2011-03-16 |
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