CN108386449A - A kind of magnetic suspension bearing for switched reluctance machines - Google Patents
A kind of magnetic suspension bearing for switched reluctance machines Download PDFInfo
- Publication number
- CN108386449A CN108386449A CN201810276490.6A CN201810276490A CN108386449A CN 108386449 A CN108386449 A CN 108386449A CN 201810276490 A CN201810276490 A CN 201810276490A CN 108386449 A CN108386449 A CN 108386449A
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- CN
- China
- Prior art keywords
- magnetic
- bearing
- magnetic suspension
- suspension bearing
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Abstract
The invention discloses a kind of magnetic suspension bearings for switched reluctance machines, magnetic suspension bearing includes magnetic suspension bearing supporting sleeve, magnetic suspension bearing supporting sleeve is internally provided with annular guide channel, the magnetic bearing rotor being set in outside machine shaft is provided in annular guide channel, it is provided with magnetic bearing radial direction control group on the outside of magnetic bearing rotor, magnetic bearing radial direction control group one end is provided with magnetic part, and magnetic bearing axial control winding and magnetic bearing radial control winding are both provided on the outside of magnetic part；Magnetic suspension bearing and the notch both sides of machine shaft socket are both provided with baltimore groove, and multiple elastic elements are provided in baltimore groove, radial distance sensor is additionally provided on notch.A kind of frictional dissipation of present invention offer is small, and work efficiency is high, and rotor is floated on space using magnetic field force and bearing support is good, prevents shaft by influence is hit, has the magnetic suspension bearing of radial transducer monitoring function.
Description
Technical field
The present invention relates to field of mechanical technique, specially a kind of magnetic suspension bearing for switched reluctance machines.
Background technology
With being substantially improved for domestic electric machine manufacture level, AC Servo Motor Control technology is gradually more and more states
Interior producer is grasped, and facilitating domestic servo-driver producer realizes in short insufficient ten years from starting to comprehensive
The developing state of extension.Motor and driving enterprise join in servo industry and realize industrialization, large-scale production one after another, but domestic
Servo motor mechanical bearing control system mainly based on low power low-end product, is attracted by higher cost performance using essence
Degree requires relatively low client, still has larger gap in function, performance and process aspect and external product, with high-performance,
In high precision, high reliability is that the AC servo motor control system of essential characteristic still relies primarily on import, and this present situation is serious
Constrain the development of High-tech of China.Therefore, the high-performance with current world level, practical magnetic are developed as early as possible
Suspension bearing control system is tracked for promoting the development of the high-end fields such as China's Aeronautics and Astronautics, national defence and industrial automation
There is important realistic meaning with catching up with advanced world levels.
In the prior art, mechanical wear not only considerably reduces the switch reluctance servo motor service life, influences precision, can also
It causes the uneven of switch reluctance servo motor air gap, heating in winding, temperature to rise to increase, motor characteristic is made to be deteriorated, efficiency reduces, contracting
The service life of short switched reluctance machines and equipment, at the same bring lubricating fluid, coolant liquid pollution the problem of.In order to overcome these to ask
It inscribes, the novel bearings such as air-bearing, liquid bearing are widely applied in early stage servo-control system, reduce the machine of bearing
Tool is worn, but air-bearing, liquid bearing device are huge, complicated, and carrying loss is big, and especially liquid bearing is also depositing ring
Border is polluted, and application scenario is restricted to affect the efficiency and service life of motor.Therefore, it is the axis of improvement high-speed electric expreess locomotive
Support performance is held, prevents shaft by influence is hit, rotor is floated on into space using magnetic field force, is realized between rotor and stator to the greatest extent
It is likely to reduced Mechanical Contact, frictional dissipation is low, and it is existing to extend motor device service life and promote the working efficiency of motor
There are the technical issues that need to address in technology.
Invention content
In order to overcome the above problem, the present invention provides that a kind of frictional dissipation is small, and work efficiency is high, using magnetic field force by rotor
Float on space and bearing support is good, prevents shaft by influence is hit, there is the magnetic suspension shaft of radial transducer monitoring function
It holds.
The technical solution of the present invention is to provide a kind of magnetic suspension bearing for switched reluctance machines, the switching magnetic-resistance electricity
It is provided with machine shaft in machine, switch reluctance machine rotor is provided in the middle part of the machine shaft, the switched reluctance machines turn
Sub-set is located in Stators for Switched Reluctance Motors winding, and the switch reluctance machine rotor both ends are arranged with along the axial direction of machine shaft
Magnetic suspension bearing, the magnetic suspension bearing include magnetic suspension bearing supporting sleeve, and the magnetic suspension bearing supporting sleeve is internally provided with
Annular guide channel is provided with the magnetic bearing rotor being set in outside the machine shaft, the magnetic bearing rotor in the annular guide channel
Outside is provided with magnetic bearing radial direction control group, and described magnetic bearing radial direction control group one end is provided with magnetic part, outside the magnetic part
Side is both provided with magnetic bearing axial control winding and magnetic bearing radial control winding；The magnetic suspension bearing is socketed with machine shaft
Notch both sides be both provided with baltimore groove, multiple elastic elements are provided in the baltimore groove, diameter is additionally provided on the notch
To range sensor.
In a preferred embodiment of the invention, elastic element is spring, and bumper is provided on the spring, described anti-
It hits pad and uses rubber or/and polyvinyl chloride.
In a preferred embodiment of the invention, elastic element is spring, and the notch both sides are both provided with multiple receivings
The reception hole of radial distance sensor.
In a preferred embodiment of the invention, elastic element is spring, is evenly arranged in the baltimore groove multiple logical
Hole.
In a preferred embodiment of the invention, elastic element is spring, and fixing nut is provided in the through-hole, described
Elastic element one end is locked in baltimore groove by fixing nut, and the elastic element other end is provided with bumper.
In a preferred embodiment of the invention, magnetic part is permanent magnet or electromagnetic coil.
The beneficial effects of the invention are as follows：
1, to improve the bearing support characteristic of high-speed electric expreess locomotive, magnetic suspension bearing is that rotor is floated on space using magnetic field force, is realized
There is no a kind of bearing of any Mechanical Contact between rotor and stator.Compared with conventional mechanical bearings, magnetic suspension bearing has such as
Lower advantage：Electric machine rotor does not contact, thus without mechanical wear, extends service life of equipment.Frictional dissipation is low, only traditional
The 5 ~ 20% of mechanical bearing substantially increase the efficiency of high-speed electric expreess locomotive.Without lubricating, cooling down, huge lubrication dress is eliminated
It sets, is suitble in application of special occasions.And magnetic suspension bearing can bear very high rotating speed.The support performance of magnetic bearing is by magnetic bearing
Ontology and its control system codetermine, and change the support performance of control strategy adjustable magnetic bearing.It can in practical engineering application
With according to requiring to adjust control strategy in real time, countershaft working condition carries out on-line checking and monitoring, and shaft is made to be in best work
Make state, to greatly improve the reliability of system.
2, magnetic bearing radial direction control group one end is provided with magnetic part so that and it is simple in structure, convenient for control；On the outside of magnetic part
It is provided with magnetic bearing axial control winding and magnetic bearing radial control winding
3, elastic element is spring, and fixing nut is provided in the through-hole, and the fixing nut locks elastic element one end
In baltimore groove, the elastic element other end is provided with bumper；So that magnetic suspension bearing is stable easily controllable so that
Motor operation is safer.
Description of the drawings
Fig. 1 is the cross-sectional view of magnetic suspension bearing of the present invention；
Fig. 2 is the mechanical structure schematic diagram of switched reluctance machines of the present invention；
Such as figure, 1- shaft position sensors, 2- rear end caps, 3- self-aligning bearings, 4- magnetic bearing axial control windings, 5- magnetic bearing diameters
To control group, 6- magnetic parts, 7- magnetic bearing radial control windings, 8- Stators for Switched Reluctance Motors windings, 9- radial displacements sensing
Device, 10- drive end bearing brackets, 11- auxiliary bearings, 12- machine shafts, 13- cylinder barrel helix tubes, 14- cylinder barrel housings, 15- cylinder barrel inner sleeves,
16- switch reluctance machine rotors, 17- magnetic bearing rotors, 18- displacement sensor reference rings, 21- magnetic suspension bearing supporting sleeves,
211- fixing nuts, 212- springs, 213- bumpers, 214- radial distance sensors, 22- annular guide channels, 23- baltimore grooves.
Specific implementation mode
To facilitate the understanding of the present invention, magnetic suspension bearing is described more fully below with reference to relevant drawings.It is attached
The preferred embodiment of magnetic suspension bearing is given in figure.But magnetic suspension bearing can be realized by many different forms,
It is not limited to the examples described herein.Make disclosure to magnetic suspension bearing on the contrary, purpose of providing these embodiments is
Content is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field for belonging to the present invention
The normally understood meaning of technical staff it is identical.It is intended merely to herein in the term used in the description of magnetic suspension bearing
The purpose of specific embodiment is described, it is not intended that the limitation present invention.Term " and or " used herein include one or
Any and all combinations of multiple relevant Listed Items.
Below in conjunction with the accompanying drawings, it elaborates to the specific implementation mode of the present invention.
As shown in Figure 1 and 2, a kind of magnetic suspension bearing for switched reluctance machines of the invention, including machine shaft 12,
12 middle part of machine shaft is provided with switch reluctance machine rotor 16, and it is fixed that switch reluctance machine rotor 16 is set in switched reluctance machines
In sub- winding 8,16 both ends of switch reluctance machine rotor are arranged with magnetic suspension bearing along the axially extending place of machine shaft 12, and
It is arranged and is used to monitor the sensing device of 12 position of machine shaft at 12 both ends of machine shaft；
Magnetic suspension bearing includes magnetic suspension bearing supporting sleeve 21, and magnetic suspension bearing supporting sleeve 21 is internally provided with annular guide channel 22,
The magnetic bearing rotor 17 being set in outside machine shaft 12 is provided in annular guide channel 22, magnetic bearing rotor 17 passes through magnetic bearing radial direction
Control group 5 controls, and 5 one end of magnetic bearing radial direction control group is provided with magnetic part 6, and 6 outside of magnetic part is both provided with magnetic bearing axial
Control winding 4 and magnetic bearing radial control winding 7；Magnetic suspension bearing is both provided with recessed with the notch both sides that machine shaft 12 is socketed
Shape slot 23 is provided with multiple elastic elements in baltimore groove 23, and it is empty that multiple storages are additionally provided on notch（It is not shown）For storing
Radial distance sensor 214, outside motor are arranged with cylinder barrel, and cylinder barrel both ends are respectively arranged with rear end cap 2 and drive end bearing bracket 10.
Specifically, elastic element in a preferred embodiment of the present invention using spring 212, is provided with anti-on spring 212
Pad 213 is hit, bumper 213 uses rubber or/and polyvinyl chloride；It is evenly arranged with multiple through-holes in baltimore groove 23, passes through through-hole
212 one end of spring is locked in baltimore groove 23 by the fixing nut of interior setting, and 212 other end of spring is provided with bumper 213.Magnetic
Property part is permanent magnet or electromagnetic coil.
Sensing device includes the radial displacement transducer 9 for being separately positioned on 12 both ends of machine shaft；Setting in rear end cap 2
It is fluted, shaft position sensor 1 is provided in groove, shaft position sensor 1 is corresponding with 12 position of machine shaft.Into one
Step, in a preferred embodiment of the invention, machine shaft 12 is both provided with displacement biography with 9 socket place of radial displacement transducer
Sensor reference rings 18；12 both ends of machine shaft are both provided with multiple radial displacement transducers 9 and multiple displacement sensor benchmark
Ring 18.
Cylinder barrel includes the cylinder barrel inner sleeve 15 for supporting motor internal instrument, and outer cover is equipped with cylinder barrel helix tube 13, cylinder barrel spiral
It is socketed with cylinder barrel housing 14 outside pipe 13.Further, screw thread is provided in cylinder barrel inner sleeve 15 with 13 shape of cylinder barrel helix tube to match.
Machine shaft 12 is arranged with self-aligning bearing 3 close to 2 one end of rear end cap；Machine shaft 12 is close to 10 1 end cap of drive end bearing bracket
Equipped with auxiliary bearing 11.
Concrete operating principle：12 middle part of machine shaft is provided with switch reluctance machine rotor 16, when switching magnetic-resistance electricity
Machine rotor 16 in the magnetic field that Stators for Switched Reluctance Motors winding 8 is formed by magnetic field force effect under carry out high speed rotation, with this
12 both ends of machine shaft are supported using magnetic suspension bearing simultaneously, by making machine shaft 12 and magnetic under the support of magnetic suspension bearing
Frictional force is minimum between suspension bearing, improves the operational efficiency of motor and greatly reduces the mechanical loss and energy of operation
Consumption；Furthermore it is isolated by self-aligning bearing 3 and auxiliary bearing 11 between shaft and motor housing, then magnetic is monitored by displacement sensor
The location status of suspension bearing.When in use, by the cooperation of the spring 212 and bumper 213 that are arranged on magnetic suspension bearing, have
The problem of effect prevents machine shaft 12 from mechanical collision occurs because of failure.Further improve magnetic suspension bearing labor aptitude and work
Make efficiency, reduce energy consumption and mechanical loss, extends the service life of machinery.
The above example only one such embodiment of the present invention, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. a kind of magnetic suspension bearing for switched reluctance machines, it is characterised in that：It is provided with electricity in the switched reluctance machines
Machine shaft, the machine shaft middle part are provided with switch reluctance machine rotor, and the switch reluctance machine rotor is set in switch
In reluctance motor stator winding, the switch reluctance machine rotor both ends are arranged with magnetic suspension bearing along the axial direction of machine shaft,
The magnetic suspension bearing includes magnetic suspension bearing supporting sleeve, and the magnetic suspension bearing supporting sleeve is internally provided with annular guide channel, institute
The magnetic bearing rotor for being provided with and being set in outside the machine shaft in annular guide channel is stated, magnetic is provided on the outside of the magnetic bearing rotor
Bearing radial direction control group, described magnetic bearing radial direction control group one end are provided with magnetic part, magnetic are both provided on the outside of the magnetic part
Bearing axial direction control winding and magnetic bearing radial control winding；The magnetic suspension bearing and the notch both sides that machine shaft is socketed are equal
It is provided with baltimore groove, multiple elastic elements are provided in the baltimore groove, radial distance sensor is additionally provided on the notch.
2. magnetic suspension bearing according to claim 1, it is characterised in that：The elastic element is spring, on the spring
It is provided with bumper, the bumper uses rubber or/and polyvinyl chloride.
3. magnetic suspension bearing according to claim 1, it is characterised in that：The elastic element is spring, the notch two
Side is both provided with multiple reception holes for accommodating radial distance sensor.
4. magnetic suspension bearing according to claim 1, it is characterised in that：The elastic element is spring, the baltimore groove
In be evenly arranged with multiple through-holes.
5. magnetic suspension bearing according to claim 4, it is characterised in that：The elastic element is spring, in the through-hole
It is provided with fixing nut, elastic element one end is locked in baltimore groove by the fixing nut, and the elastic element other end is set
It is equipped with bumper.
6. according to the magnetic suspension bearing described in above-mentioned arbitrary claim, it is characterised in that：The magnetic part is permanent magnet or electricity
Magnetic coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810276490.6A CN108386449A (en) | 2018-03-30 | 2018-03-30 | A kind of magnetic suspension bearing for switched reluctance machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810276490.6A CN108386449A (en) | 2018-03-30 | 2018-03-30 | A kind of magnetic suspension bearing for switched reluctance machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386449A true CN108386449A (en) | 2018-08-10 |
Family
ID=63072961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810276490.6A Pending CN108386449A (en) | 2018-03-30 | 2018-03-30 | A kind of magnetic suspension bearing for switched reluctance machines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386449A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048554A (en) * | 2018-01-15 | 2019-07-23 | 西门子股份公司 | Method for monitoring magnetic bearing apparatus |
| CN110401293A (en) * | 2019-08-29 | 2019-11-01 | 扬州大学 | A kind of two-for-one twister magnetic levitation motor bearings |
| CN112100847A (en) * | 2020-08-24 | 2020-12-18 | 淮阴工学院 | Magnetic suspension bearing for switched reluctance motor |
| CN114857170A (en) * | 2022-04-19 | 2022-08-05 | 华中科技大学 | Axial magnetic bearing structure of magnetic suspension bearing |
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| CN106505780A (en) * | 2016-12-15 | 2017-03-15 | 南通金驰机电有限公司 | A kind of magnetic suspension permanent magnet direct-drive high-speed motor |
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| CN101252332A (en) * | 2006-10-19 | 2008-08-27 | 邢成龙 | Controllable magnetic combustion machine |
| CN101414772A (en) * | 2008-11-28 | 2009-04-22 | 江苏大学 | High speed electric principal shaft system supported by five-freedom-degree AC magnetic bearing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110048554A (en) * | 2018-01-15 | 2019-07-23 | 西门子股份公司 | Method for monitoring magnetic bearing apparatus |
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| CN110048554B (en) * | 2018-01-15 | 2021-12-28 | 西门子股份公司 | Method for monitoring a magnetic bearing device |
| CN110401293A (en) * | 2019-08-29 | 2019-11-01 | 扬州大学 | A kind of two-for-one twister magnetic levitation motor bearings |
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| CN114857170A (en) * | 2022-04-19 | 2022-08-05 | 华中科技大学 | Axial magnetic bearing structure of magnetic suspension bearing |
| CN114857170B (en) * | 2022-04-19 | 2023-03-24 | 华中科技大学 | Axial magnetic bearing structure of magnetic suspension bearing |
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