CN106763186A - A kind of axial mixed magnetic bearing with permanent magnetism unloading force - Google Patents
A kind of axial mixed magnetic bearing with permanent magnetism unloading force Download PDFInfo
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- CN106763186A CN106763186A CN201710177759.0A CN201710177759A CN106763186A CN 106763186 A CN106763186 A CN 106763186A CN 201710177759 A CN201710177759 A CN 201710177759A CN 106763186 A CN106763186 A CN 106763186A
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- stator core
- stator
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- axial
- magnetic bearing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
- F16C32/0465—Details of the magnetic circuit of stationary parts of the magnetic circuit with permanent magnets provided in the magnetic circuit of the electromagnets
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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
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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
- F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
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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
- F16C2204/00—Metallic materials; Alloys
- F16C2204/60—Ferrous alloys, e.g. steel alloys
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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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
- F16C2300/22—High-speed rotation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of axial mixed magnetic bearing with permanent magnetism unloading force, including stator module and the rotor assembly being co-axially located in stator module；Rotor assembly includes rotating shaft and the rotor propulsion disc being set in rotating shaft；Stator module includes stator exciting coil, permanent magnet, stator core and end stator core, stator exciting coil is arranged in the coil groove set in stator core, permanent magnet is the toroidal magnet being placed in the axial direction between stator core and end stator core, control air gap is provided with the axial direction between the upper surface of inner end between the upper surface of rotor propulsion disc and the lower surface of stator core coil groove upper end, under the lower surface of rotor propulsion disc and stator core coil groove, and biasing air gap is provided with vertically between the inner surface and shaft end of end stator core.Compact conformation of the present invention, size are compact, and its permanent magnet is arranged at stator module part, and rotor assembly rotating speed influences small, adapts to for high-speed cruising on it.
Description
Technical field
The invention belongs to magnetic bearing field, and in particular to a kind of axial mixed magnetic bearing with permanent magnetism unloading force.
Background technology
Magnetic suspension bearing is that rotor stability is suspended using the electromagnetic force of precise control, makes do not have machinery to connect between rotor
A kind of tactile high-performance bearing.Due to not existing contact mechanically between stator and rotor, so the rotor of magnetic suspension bearing is reachable
To operating rotating speed very high.Simultaneously as electromagnetic force can be by special control system accurate adjustment, therefore rigidity and damping
It is adjustable.Magnetic suspension bearing has the advantages that low energy consumption, long lifespan, unlubricated, pollution-free, be particularly suitable at a high speed, vacuum and super clean
The special application scenario such as net.
Can be divided three classes for magnetic suspension bearing by the free degree controlled according to magnetic suspension bearing：Simple Freedom Magnetic Bearing, two
Free degree magnetic bearing, multiple degrees of freedom magnetic bearing.In the high-speed rotor system of magnetic suspension bearing, except rotor rotation one from
By being outside one's consideration, five frees degree are controlled by magnetic bearing supporting system in addition.Single free degree magnetic bearing is primarily referred to as controlling rotor
It is unidirectional in the axial direction to move back and forth, two, multiple free degree magnetic bearing distributed controll radial directions, the free degree such as radial-axial.
Can be divided three classes for axial magnetic bearing according to magnetic force presentation mode by single-degree-of-freedom magnetic suspension bearing：Permanent magnetism is passively axial
Magnetic bearing, pure electrical excitation axial magnetic bearing and permanent magnet bias mixing axial magnetic bearing.Wherein, permanent magnetism axial magnetic bearing rigidity it is small,
Bearing state is uncontrollable, is not suitable for large bearing capacity high speed situation；Pure electrical excitation cod provides bias magnetic field due to electrical excitation,
Idling consumption is big；The advantage of both permanent magnet bias mixing axial bearings synthesis, the bias magnetic field for making full use of permanent magnet to provide, treats
Machine loss is small, and state is controllable.
The structure of existing permanent magnet bias mixing axial magnetic bearing all comes with some shortcomings to a certain extent：
The permanent magnet of some permanent magnet bias mixing axial magnetic bearings is placed on the thrust disc of rotor, although simplify magnetic circuit mould
Type, but the difficulty of mounting process is the increase in, and the characteristic of the low tensile strength of permanent magnet limits this structure in high speed situation
Application.
Some heteropole formula permanent magnet bias mixing axial magnetic bearings use rotor dual thrust dish structure, and coil insertion rotor is double
Between thrust disc, the coil installation difficulty of this structure is unfavorable for dismounting, and engineering difficulty is larger.
Be placed in permanent magnet in stator core by some heteropole formula permanent magnet bias mixing axial magnetic bearings, electrical excitation magnetic circuit with forever
Magnetic magnetic circuit is connected, and causes that winding volume is excessive, permanent magnet service life reduction, and system reliability declines.
Be fixed on permanent magnet in stator core by heteropole formula permanent magnet bias mixing axial magnetic bearing also, used as biasing gas
One structural plane of gap, it is difficult to ensure that the precision of size of gaps.
The content of the invention
It is an object of the invention in view of the shortcomings of the prior art, there is provided a kind of compact conformation, size are compact, applicable
In the axial mixed magnetic bearing with permanent magnetism unloading force of high-speed cruising.
It is an object of the invention to provide a kind of compact conformation, can high-speed cruising, axial length be short, engineering feasibility is high and can
The permanent magnet bias mixing axial bearing of permanent magnetism unloading force is provided.
To achieve the above object, a kind of axial mixed magnetic bearing with permanent magnetism unloading force designed by the present invention includes fixed
Sub-component and the rotor assembly being co-axially located in the stator module；The rotor assembly includes rotating shaft and is set in rotating shaft
Rotor propulsion disc, the rotor propulsion disc is to be coaxially disposed circle ring column with the rotating shaft, described a kind of with permanent magnetism unloading
The axial mixed magnetic bearing of power is the revolving body of the axis along the rotating shaft；The stator module includes stator exciting coil, forever
Magnet, stator core and end stator core, the stator exciting coil are arranged in the coil groove set in stator core, institute
State the outer circumference surface of stator exciting coil and the rotor propulsion disc diametrically set and between there is gap, the permanent magnetism
Body is the toroidal magnet being placed in the axial direction between the stator core and the end stator core, in the stator core
Stator core coil groove upper end and stator core coil groove under formed between inner end and house the outer of the rotor propulsion disc
Along axis side between the lower surface of the opening of circle, the upper surface of the rotor propulsion disc and the stator core coil groove upper end
To being provided with control air gap, the upper surface of the lower surface of the rotor propulsion disc and inner end under the stator core coil groove it
Between be provided with control air gap in the axial direction, set vertically between the inner surface and the shaft end of the end stator core
There is biasing air gap.
Preferably, the external diameter of the rotor propulsion disc is not more than the internal diameter of the coil groove.
Preferably, the permanent magnet axial charging.
Preferably, it is described control air gap, the biasing air gap size be 0.5mm.
Preferably, the stator core, the end stator core using magnetic property high electrical pure iron material
Material is made.
Preferably, the rotating shaft is made of high intensity permeability alloys Steel material, and the rotor propulsion disc is used
The electrical pure iron of the soft magnetic materials of high intensity or magnetic property high is made.
The beneficial effects of the invention are as follows：A kind of axial mixed magnetic bearing with permanent magnetism unloading force of the invention has following
Advantage：
(1) permanent magnet is located at stator module part, and rotor speed does not almost have any influence to it, is advantageously implemented high turning
Speed；Permanent magnet is not involved in directly constituting for working gas gap, is conducive to improving structure machining accuracy.
(2) electrical excitation magnetic circuit and permanent magnetic circuit are in parallel, and decoupling performance is good；Exciting current influences small, magnetic to permanent magnet performance
The reliability of bearing is high.
(3) the permanent magnetism unloading force that can be produced in biasing air gap by permanent magnet offsets rotor gravity, effectively reduces electricity
Exciting current, reduces bearing idling consumption.
(4) electrical excitation magnetic circuit passes through rotor core outer ring, and the vortex of generation is smaller on rotor influence, is conducive to improving magnetic axis
The dynamic property held.
Brief description of the drawings
Fig. 1 for the preferred embodiment of the present invention the axial mixed magnetic bearing with permanent magnetism unloading force by two by axis and
Orthogonal section cut off after dimensional structure diagram.
Fig. 2 is the axial cross section structural representation of the axial mixed magnetic bearing with permanent magnetism unloading force in Fig. 1, wherein empty
Line show permanent magnetic circuit.
Fig. 3 is the axial cross section structural representation of the axial mixed magnetic bearing with permanent magnetism unloading force in Fig. 1, wherein empty
Line show electrical excitation magnetic circuit.
Each part numbers are as follows in figure：Rotating shaft 1, rotor propulsion disc 2, stator exciting coil 3, permanent magnet 4, stator core 5
(wherein, inner end 52 under stator core coil groove upper end 51, stator core coil groove), end stator core 6, control air gap
7th, air gap 8 is biased.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.
Fig. 1 is referred to, a kind of axial mixed magnetic bearing with permanent magnetism unloading force that the preferred embodiment of the present invention is provided is
Along the rotary structure of its axis, it includes that stator module and coaxial magnetic are suspended in the rotor assembly in stator module.
Rotor assembly includes rotating shaft 1 and rotor propulsion disc 2, and rotor propulsion disc 2 is set in rotating shaft 1.Rotor propulsion disc 2 has
There is the annulus of certain axial width, be coaxially disposed with rotating shaft 1.Rotor propulsion disc 2 is the stressed member of rotor assembly, bears stator
The axial bearing capacity that component is applied.The magnetic conduction of rotating shaft 1, can be made of high intensity permeability alloys Steel material.Rotor propulsion disc 2
Material due to by rotating speed influenceed can according to actually being selected, if using high speed situation need to using the soft magnetic materials of high intensity,
If being applied to middle low speed occasion should select the electrical pure iron of magnetic property high.
Stator module includes stator exciting coil 3, permanent magnet 4, stator core 5 and end stator core 6.Magnet exciting coil 3
It is arranged in the coil groove set in stator core 5, magnet exciting coil 3 is arranged on coil groove inside and carries out encapsulating treatment to be consolidated
It is fixed.The outer circumference surface of magnet exciting coil 3 and rotor propulsion disc 2 diametrically set and between have gap.Permanent magnet 4 is annular
Magnet, is located axially between stator core 5 and end stator core 6.For easy for installation, permanent magnet 4 can use many
The assembled annular of block.Stator core coil groove upper end 51 and the stator of the coil groove of magnet exciting coil 3 are housed in stator core 5
Opening is formed under ironcore choke groove between inner end 52.The outer ring of rotor propulsion disc 2 is placed in stator core coil groove upper end 51
In the opening between inner end 52 under stator core coil groove, the external diameter of rotor propulsion disc 1 is not more than coil groove internal diameter (rotor
Thrust disc 1 is not stretched into coil groove).The upper surface of rotor propulsion disc 2 and the lower surface of stator core coil groove upper end 51 it
Between it is axially disposed have a control air gap 7, the upper surface of the lower surface of rotor propulsion disc 2 and inner end 52 under stator core coil groove
Between it is axially disposed have control air gap 7.Stator core 5 and end stator core 6 are using magnetic property high in stator module
Electrical pure iron material is made.Biasing air gap 8 is provided between the inner surface of end stator core 6 and the end of rotating shaft 1 vertically.
In the present embodiment, whole air gaps (control air gap 7, biasing air gap 8) size 0.5mm is taken, what magnetic bearing was produced unloads
Carry the gravity that power is exactly equal to rotor assembly.
Permanent magnet 4 constitutes permanent magnetic circuit as shown in Figure 2 together with rotating shaft 1, rotor propulsion disc 2.The permanent magnet 4 of annular
Axial charging, can form a magnetic force loop.The magnetic line of force through end stator core 6, biases air gap from the N poles of permanent magnet 4
8th, rotating shaft 1, rotor propulsion disc 2, control air gap 7, stator core 5, return to the S poles of permanent magnet 4.
Stator exciting coil 3 is located in stator core 5, and electrical excitation magnetic circuit as shown in Figure 3 is constituted with rotor propulsion disc 2.
It is assumed that when exciting current is timing, electricity excitation magnetic field direction upwards, because permanent magnet bias magnetic field is respectively at upper and lower working gas gap
Produce magnetic field (bias magnetic field of air gap is upward in setting) in opposite direction, two kinds of magnetic field linear superpositions, magnetic in upper control air gap
Field enhancing, field weakening in lower control air gap, rotor propulsion disc 2 is subject to upward bearing capacity.Similarly, when the electric current of magnet exciting coil
During to bear, rotor propulsion disc 2 is subject to downward bearing capacity.
A kind of operation principle of axial mixed magnetic bearing with permanent magnetism unloading force of the invention is as follows：Carried by permanent magnet 4
For the bias magnetic field of mixing axial magnetic bearing, the control magnetic field required for regulation is realized as stator exciting coil 3.Permanent magnetic circuit
Path be：N poles → end the stator core 6 of permanent magnet 4 → 1 → rotor propulsion disc of biasing 8 → rotating shaft of air gap 2 → control air gap
The S poles of 7 → stator core, 5 → permanent magnet 4.The electro-magnetic flux path that Exciting Windings for Transverse Differential Protection is produced is：Stator core 5 → control air gap
7 → rotor propulsion disc 2 → 7 → stator core of control air gap 5.The permanent magnet flux that permanent magnet 4 is produced passes through control air gap 7, biasing
Air gap 8, and countershaft 1 produces the permanent magnetism unloading force for offsetting rotor assembly gravity；What permanent magnet 4 and stator excitation winding 3 were produced
Permanent magnetism, electricity excitation magnetic field are superimposed or offset in controlling air gap 7 at two, and collective effect produces controling power on rotor propulsion disc 2.
The Exciting Windings for Transverse Differential Protection sense of current in the stator can be with bidirectional modulation, it is assumed that when exciting current is timing, electrical excitation
Magnetic direction is upward, because permanent magnet bias magnetic field controls to produce magnetic field in opposite direction (it is assumed that upper control in air gaps respectively at two
The magnetic field of air gap processed is upward), two kinds of magnetic field linear superpositions, magnetic field-enhanced, the field weakening of lower control air gap, rotor of upper control
Thrust disc is subject to upward bearing capacity；Similarly, when the electric current of magnet exciting coil is to bear, rotor propulsion disc is subject to downward carrying
Power.
Compared with prior art, a kind of axial mixed magnetic bearing with permanent magnetism unloading force of the invention has following spy
Point：
(1) permanent magnet 4 is located at stator module part, and the rotating speed of rotor does not almost have any influence on it, is advantageously implemented
Rotating speed high；And permanent magnet 4 is not involved in directly constituting for working gas gap, be conducive to improving structure machining accuracy.
(2) electrical excitation magnetic circuit and permanent magnetic circuit are in parallel, and decoupling performance is good, and exciting current influences small, magnetic to permanent magnet performance
The reliability of bearing is high.
(3) the permanent magnetism unloading force that can be produced in biasing air gap 8 by permanent magnet 4 offsets rotor assembly gravity, effectively subtracts
Lack electrical excitation electric current, reduce bearing idling consumption.
(4), through the outer ring of rotor core 5, the influence of the vortex of generation to rotor assembly is smaller, favorably for electrical excitation magnetic circuit
In the dynamic property for improving magnetic bearing.
In sum, a kind of axial mixed magnetic bearing compact conformation, axial length with permanent magnetism unloading force of the invention
It is short, can be applied to high-speed cruising occasion, it is adaptable to the high speed situation such as flywheel energy storage system, satellite momentum wheel, high-speed machine tool.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. a kind of axial mixed magnetic bearing with permanent magnetism unloading force, including stator module and the stator module is co-axially located at
Interior rotor assembly, it is characterised in that：The rotor assembly includes rotating shaft (1) and the rotor propulsion disc being set in rotating shaft (1)
(2), the rotor propulsion disc (3) is to be coaxially disposed circle ring column with the rotating shaft (1), described a kind of with permanent magnetism unloading force
Axial mixed magnetic bearing is the revolving body of the axis along the rotating shaft (1)；The stator module include stator exciting coil (3),
Permanent magnet (4), stator core (5) and end stator core (6), the stator exciting coil (3) are arranged in stator core (5)
In the coil groove of setting, the stator exciting coil (3) is diametrically being set with the outer circumference surface of the rotor propulsion disc (2)
And between there is gap, the permanent magnet (4) to be placed in the stator core (5) and the end stator iron in the axial direction
Toroidal magnet between the heart (6), stator core coil groove upper end (51) and stator core coil groove on the stator core (5)
The opening of the outer ring for housing the rotor propulsion disc (2), the upper end of the rotor propulsion disc (2) are formed between lower inner end (52)
Control air gap (7) is provided between face and the lower surface of the stator core coil groove upper end (51) in the axial direction, it is described
Set in the axial direction between the lower surface of rotor propulsion disc (2) and the upper surface of inner end (52) under the stator core coil groove
Control air gap (7) is equipped with, is provided with vertically between the inner surface of the end stator core (6) and the rotating shaft (1) end partially
Put air gap (8).
2. a kind of axial mixed magnetic bearing with permanent magnetism unloading force according to claim 1, it is characterised in that：Described turn
The external diameter of sub- thrust disc (1) is not more than the internal diameter of the coil groove.
3. a kind of axial mixed magnetic bearing with permanent magnetism unloading force according to claim 1, it is characterised in that：It is described forever
Magnet (4) axial charging.
4. a kind of axial mixed magnetic bearing with permanent magnetism unloading force according to claim 1, it is characterised in that：The control
Air gap (7) processed, the size of biasing air gap (8) are 0.5mm.
5. a kind of axial mixed magnetic bearing with permanent magnetism unloading force according to any one of claim 1 to 4, its feature
It is：The stator core (5), the end stator core (6) are made of the electrical pure iron material of magnetic property high.
6. a kind of axial mixed magnetic bearing with permanent magnetism unloading force according to claim 5, it is characterised in that：Described turn
Axle (1) is made of high intensity permeability alloys Steel material, and the rotor propulsion disc (2) is led using the soft magnetic materials or height of high intensity
The electrical pure iron of magnetic property is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177759.0A CN106763186B (en) | 2017-03-23 | 2017-03-23 | A kind of axial mixed magnetic bearing with permanent magnetism unloading force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177759.0A CN106763186B (en) | 2017-03-23 | 2017-03-23 | A kind of axial mixed magnetic bearing with permanent magnetism unloading force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763186A true CN106763186A (en) | 2017-05-31 |
| CN106763186B CN106763186B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710177759.0A Active CN106763186B (en) | 2017-03-23 | 2017-03-23 | A kind of axial mixed magnetic bearing with permanent magnetism unloading force |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387558A (en) * | 2017-07-27 | 2017-11-24 | 江苏大学 | A kind of vehicle-mounted flying wheel battery alternating current-direct current Three Degree Of Freedom axial direction monolithic hybrid magnetic bearing |
| CN107546904A (en) * | 2017-09-29 | 2018-01-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of magnetic bearing, compressor and processing method |
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| CN117052791A (en) * | 2023-09-26 | 2023-11-14 | 山东华东风机有限公司 | Axial magnetic bearing design method for energy storage flywheel and axial magnetic bearing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387558A (en) * | 2017-07-27 | 2017-11-24 | 江苏大学 | A kind of vehicle-mounted flying wheel battery alternating current-direct current Three Degree Of Freedom axial direction monolithic hybrid magnetic bearing |
| CN107546904A (en) * | 2017-09-29 | 2018-01-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of magnetic bearing, compressor and processing method |
| CN107546904B (en) * | 2017-09-29 | 2023-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic bearing, compressor and processing method |
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| CN113048148B (en) * | 2019-12-28 | 2023-09-01 | 坎德拉(深圳)新能源科技有限公司 | Magnetic bearing and rotating mechanism using same |
| CN117052791A (en) * | 2023-09-26 | 2023-11-14 | 山东华东风机有限公司 | Axial magnetic bearing design method for energy storage flywheel and axial magnetic bearing |
| CN117052791B (en) * | 2023-09-26 | 2024-04-02 | 山东华东风机有限公司 | Axial magnetic bearing design method for energy storage flywheel and axial magnetic bearing |
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| CN106763186B (en) | 2019-04-30 |
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