CN110017329A - A kind of E type structure electromagnetic type radial direction magnetic bearing - Google Patents
A kind of E type structure electromagnetic type radial direction magnetic bearing Download PDFInfo
- Publication number
- CN110017329A CN110017329A CN201910322240.6A CN201910322240A CN110017329A CN 110017329 A CN110017329 A CN 110017329A CN 201910322240 A CN201910322240 A CN 201910322240A CN 110017329 A CN110017329 A CN 110017329A
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- tooth
- radial
- type
- radial suspension
- type structure
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- 239000000725 suspension Substances 0.000 claims abstract description 67
- 238000004804 winding Methods 0.000 claims abstract description 28
- 238000002955 isolation Methods 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 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
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
Abstract
The invention discloses a kind of E type structure electromagnetic type radial direction magnetic bearings, and stator is made of four E type structures and four magnetic isolation plates, and E type structure is alternately arranged with magnetic isolation plate, and rotor is cylindrical structure；The number of teeth of each E type structure is 3, including 1 wide tooth and 2 narrow teeth, and wide tooth is in the centre of 2 narrow teeth；The wide tooth of each E type structure is equal with the angle of its 2 narrow between cog；Each magnetic isolation plate and adjacent two narrow tooth close arrangements, and constitute a combination tooth；It is wound with 1 bias coil on each combination tooth, 1 radial suspension coil is wound on each wide tooth；It biases winding and is used to control the size and Orientation of suspending power for generating biasing magnetic flux, radial suspension winding.It is decoupled naturally in two radial suspension force structures of the invention, control is simple, and suspension precision is high；Biasing magnetic flux is easy to adjust, and radial bearing capacity is big, and self-stiffness is big；Additionally, due to no permanent magnet, manufacture assembly is simple, at low cost and strong to working environment adaptability.
Description
Technical field
The present invention relates to a kind of E type structure electromagnetic type radial direction magnetic bearings, belong to magnetic suspension bearing field.
Background technique
Magnetic suspension bearing has without friction, without abrasion, without sealing lubrication, high speed, precision is high, the service life is long and maintenance at
This low good characteristic, can effectively solve the problems, such as the bearing support of high-speed motor.According to suspending power whether can active control, magnetic axis
It holds and is commonly divided into passive-type and active two types.Active magnetic bearing can be by electromagnetic force between control stator and rotor with reality
The suspension of existing shaft, is widely used in high-speed motor field.Mode is established according to bias magnetic field, active magnetic bearing can be divided into electricity
Magnetic-type and mixed type.The biasing of electromagnetic type magnetic bearing, control magnetic flux are generated by electromagnet, and the two can utilize same coil or two
A absolute coil generates, have the characteristics that large carrying capacity, rigidity can reconcile control it is flexible, in harsh environment adaptabilities such as high temperature
By force.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, proposes a kind of E type structure electromagnetic type radial direction magnetic bearing.The magnetic axis
The stator held is made of four E type structures and four magnetic isolation plates, and each interstructural magnetic circuit of E type is mutually isolated, therefore two radial directions
It is decoupled naturally in suspending power structure；The magnetic bearing includes two kinds of winding types, and one kind is biasing winding, for generating biasing magnetic
It is logical；Another kind is radial suspension winding, for controlling the size and Orientation of suspending power；The magnetic bearing has control simple, outstanding
The advantages that floating precision height and suitable high-speed cruising, also as cost is relatively low without permanent magnet.
To solve the above-mentioned problems, the technical solution adopted by the present invention are as follows: a kind of E type structure electromagnetic type radial direction magnetic bearing,
Including stator, rotor, bias coil and radial suspension coil；
The stator is made of 4 E type structures and 4 magnetic isolation plates, and 4 E type structures and 4 magnetic isolation plates are alternately arranged；4 E
Type structure is uniformly distributed, and spatially differs 90 °, wherein 2 E type structures are located at horizontal direction, remaining 2 E type structures are located at perpendicular
Histogram to；The number of teeth of each E type structure is 3, including 1 wide tooth and 2 narrow teeth, and the wide tooth is in the centre of 2 narrow teeth；
The wide tooth of the E type structure is equal with the angle of its 2 narrow between cog；Each magnetic isolation plate and the adjacent two narrow close cloth of tooth
It sets, and constitutes a combination tooth, totally 4；
The rotor is cylindrical structure, and is arranged in the stator；
It is wound with 1 bias coil on each combination tooth, totally 4；4 bias coils connect to form 1 biasing winding；
It is wound with 1 radial suspension coil on each wide tooth, totally 4, two of them radial suspension coil is located at horizontal direction,
Remaining two radial suspension coils are located at vertical direction；Positioned at two radial suspension coil differential concatenations of horizontal direction, 1 is constituted
A horizontal direction radial suspension winding；Positioned at two radial suspension coil differential concatenations of vertical direction, 1 vertical direction is constituted
Radial suspension winding.
It biases winding and one constant biasing magnetic flux is generated by applying DC excitation using permanent conducting energisation mode.Two
The driving of bipolarity converter is respectively adopted in a radial suspension winding, rationally the size of two radial suspension winding currents of control and side
To generate the radial suspension force of arbitrary size and direction, and then the stable suspersion of realization rotor.
Beneficial effects of the present invention: the invention proposes a kind of E type structure electromagnetic type radial direction magnetic bearings, using of the invention
Technical solution can reach following technical effect:
(1) it is not necessarily to permanent magnet, manufacture assembly is simple, at low cost and strong to working environment adaptability；
(2) biasing winding provides biasing magnetic flux, and biasing magnetic flux is easy to adjust, and radial bearing capacity is big, and self-stiffness is big, is suitble to big function
Rate application；
It is decoupled naturally in (3) two radial suspension force structures, control is simple, and suspension precision is high, has in high-speed motor field
Unique advantage.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram of E type structure electromagnetic type radial direction magnetic bearing of the present invention.
Fig. 2 is the flux distribution of E type structure electromagnetic type radial direction magnetic bearing of the present invention.
Description of symbols: Fig. 1 is into Fig. 2, and 1 is E type structure, and 2 be magnetic isolation plate, and 3 be rotor, and 4 be bias coil, and 5 are
Radial suspension coil, 6,7,8 be respectively the positive direction of x, y, z axis direction reference axis, and 9 be biasing magnetic flux, and 10 are horizontally oriented diameter
The suspension control magnetic flux generated to the control that suspends, 11 be the suspension control magnetic flux that the control of vertical direction radial suspension generates.
Specific embodiment
With reference to the accompanying drawing, a kind of technical solution of E type structure electromagnetic type radial direction magnetic bearing of the present invention is carried out specifically
It is bright:
As shown in Figure 1, being the three dimensional structure diagram of E type structure electromagnetic type radial direction magnetic bearing of the present invention, wherein 1 is E type knot
Structure, 2 be magnetic isolation plate, and 3 be rotor, and 4 be bias coil, and 5 be radial suspension coil, and 6,7,8 be respectively x, y, z axis direction reference axis
Positive direction, wherein x-axis is overlapped with horizontal direction, and y-axis is overlapped with vertical direction.
A kind of E type structure electromagnetic type radial direction magnetic bearing, including stator, rotor, bias coil and radial suspension coil；
The stator is made of 4 E type structures and 4 magnetic isolation plates, and 4 E type structures and 4 magnetic isolation plates are alternately arranged；4 E
Type structure is uniformly distributed, and spatially differs 90 °, wherein 2 E type structures are located at horizontal direction, remaining 2 E type structures are located at perpendicular
Histogram to；The number of teeth of each E type structure is 3, including 1 wide tooth and 2 narrow teeth, and the wide tooth is in the centre of 2 narrow teeth；
The wide tooth of the E type structure is equal with the angle of its 2 narrow between cog；Each magnetic isolation plate and the adjacent two narrow close cloth of tooth
It sets, and constitutes a combination tooth, totally 4；
The rotor is cylindrical structure, and is arranged in the stator；
It is wound with 1 bias coil on each combination tooth, totally 4；4 bias coils connect to form 1 biasing winding；
It is wound with 1 radial suspension coil on each wide tooth, totally 4, two of them radial suspension coil is located at horizontal direction,
Remaining two radial suspension coils are located at vertical direction；Positioned at two radial suspension coil differential concatenations of horizontal direction, 1 is constituted
A horizontal direction radial suspension winding；Positioned at two radial suspension coil differential concatenations of vertical direction, 1 vertical direction is constituted
Radial suspension winding.
It biases winding and one constant biasing magnetic flux is generated by applying DC excitation using permanent conducting energisation mode.Two
The driving of bipolarity converter is respectively adopted in a radial suspension winding, rationally the size of two radial suspension winding currents of control and side
To generate the radial suspension force of arbitrary size and direction, and then the stable suspersion of realization rotor.
As shown in Fig. 2, being the flux distribution of E type structure electromagnetic type radial direction magnetic bearing of the present invention.Wherein, line label 9 is
Magnetic flux is biased, line label 10 is horizontally oriented the suspension control magnetic flux that radial suspension control generates, and line label 11 is vertical direction
The suspension control magnetic flux that radial suspension control generates.
It biases magnetic flux to be distributed in NNNN or SSSS, i.e., it is identical to generate polarity of the magnetic field for four bias coils, it is therefore desirable to wide tooth
Cooperation forms it into closed circuit.There are two mutually isolated magnetic for the biasing magnetic flux tool that bias coil on each combination tooth generates
Road, the path of each magnetic circuit include: narrow tooth, stator yoke, wide tooth, air gap, rotor, air gap and narrow tooth.
Horizontal direction (x-axis) radial suspension winding, respectively in positive direction of the x-axis and negative direction of the x-axis, generation two is mutually isolated
And opposite polarity suspension control magnetic flux, wherein two suspension control magnetic fluxs are through wide tooth, two stator yokes, two narrow teeth, two
A air gap forms closed circuit.
When horizontal direction radial suspension winding applies electric current shown in Fig. 2, in positive direction of the x-axis, suspension control magnetic flux with
Biasing flow direction is identical, the magnetic flux enhancing in air gap；In negative direction of the x-axis, suspension control magnetic flux and biasing flow direction on the contrary,
So that the magnetic flux of x-axis direction is greater than the magnetic flux of negative direction of the x-axis, and then generate the radial suspension force of a positive direction of the x-axis.Work as level
When direction radial suspension winding applies the electric current of opposite direction, the radial suspension force of a negative direction of the x-axis will be generated.Therefore, it controls
The size and Orientation of horizontal direction radial suspension winding current processed, i.e., the size and Orientation of adjustable x-axis direction suspending power.
Similarly, the size and Orientation of vertical direction (y-axis) radial suspension winding current is controlled, i.e., adjustable y-axis direction is outstanding
The size and Orientation of buoyancy.Therefore, the size and Orientation for rationally controlling two radial suspension winding currents can produce one big
The small and controllable radial suspension force in direction, to realize the radial suspension of rotor.
According to radial requirement for bearing capacity, dynamic regulation biases the size of magnetic flux, rationally controls the electricity of suspending windings again later
Stream, not only can effectively promote energy conversion efficiency, also help and reduce suspension power consumption and raising suspension precision.
In conclusion the present invention constructs a kind of electromagnetic type radial direction magnetic bearing that magnetic circuit is mutually isolated, two radial suspensions
Power decouples naturally in structure, and the control that suspends is simple and suspension precision is high；Due to being free of permanent magnet, manufacture assembly is simple, cost
It is low and strong to environmental suitability；It is easy to adjust to bias magnetic flux, is conducive to promote radial bearing capacity, and self-stiffness is big, it is especially suitable
Close high speed, high-power applications occasion.
For those skilled in the art, it is excellent that association's others can be easy to according to the above implementation type
Point and deformation.Therefore, the invention is not limited to above-mentioned specific example, as just example to a kind of form of the invention into
Detailed, the exemplary explanation of row.In the range of without departing substantially from present inventive concept, those of ordinary skill in the art are according to above-mentioned specific
Example should be included in scope of the presently claimed invention and its wait homotypes by the obtained technical solution of various equivalent replacements
Within enclosing.
Claims (1)
1. a kind of E type structure electromagnetic type radial direction magnetic bearing, including stator, rotor, bias coil and radial suspension coil；Its feature
It is,
The stator is made of 4 E type structures and 4 magnetic isolation plates, and 4 E type structures and 4 magnetic isolation plates are alternately arranged；4 E
Type structure is uniformly distributed, and spatially differs 90 °, wherein 2 E type structures are located at horizontal direction, remaining 2 E type structures are located at perpendicular
Histogram to；The number of teeth of each E type structure is 3, including 1 wide tooth and 2 narrow teeth, and the wide tooth is in the centre of 2 narrow teeth；
The wide tooth of the E type structure is equal with the angle of its 2 narrow between cog；Each magnetic isolation plate and the adjacent two narrow close cloth of tooth
It sets, and constitutes a combination tooth, totally 4；
The rotor is cylindrical structure, and is arranged in the stator；
It is wound with 1 bias coil on each combination tooth, totally 4；4 bias coils connect to form 1 biasing winding；
It is wound with 1 radial suspension coil on each wide tooth, totally 4, two of them radial suspension coil is located at horizontal direction,
Remaining two radial suspension coils are located at vertical direction；Positioned at two radial suspension coil differential concatenations of horizontal direction, 1 is constituted
A horizontal direction radial suspension winding；Positioned at two radial suspension coil differential concatenations of vertical direction, 1 vertical direction is constituted
Radial suspension winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910322240.6A CN110017329B (en) | 2019-04-22 | Electromagnetic radial magnetic bearing with E-shaped structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910322240.6A CN110017329B (en) | 2019-04-22 | Electromagnetic radial magnetic bearing with E-shaped structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110017329A true CN110017329A (en) | 2019-07-16 |
| CN110017329B CN110017329B (en) | 2024-05-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953249A (en) * | 2019-12-02 | 2020-04-03 | 北京泓慧国际能源技术发展有限公司 | Directional single magnetic circuit radial magnetic bearing and rotating device |
| CN112664561A (en) * | 2020-12-11 | 2021-04-16 | 庆安集团有限公司 | Dual-redundancy coil driving magnetic bearing for aircraft |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09166138A (en) * | 1995-12-14 | 1997-06-24 | Shimadzu Corp | Magnetic bearing device |
| CN201278474Y (en) * | 2008-09-09 | 2009-07-22 | 浙江大学 | Mixed excitation type permanent magnet switch magnet link motor |
| CN203939869U (en) * | 2014-07-16 | 2014-11-12 | 南京化工职业技术学院 | A kind of permanent-magnetic biased axial radial magnetic bearing |
| CN104795953A (en) * | 2015-04-29 | 2015-07-22 | 山东大学 | Switch reluctance machine with stator separated from rotor |
| WO2016207492A1 (en) * | 2015-06-26 | 2016-12-29 | Lappeenrannan Teknillinen Yliopisto | A magnetic actuator for a magnetic suspension system |
| CN106936338A (en) * | 2017-04-11 | 2017-07-07 | 南京邮电大学 | A kind of four-degree-of-freedom composite construction bearing-free switch reluctance motor and control method |
| CN209892624U (en) * | 2019-04-22 | 2020-01-03 | 南京埃克锐特机电科技有限公司 | Electromagnetic radial magnetic bearing with E-shaped structure |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09166138A (en) * | 1995-12-14 | 1997-06-24 | Shimadzu Corp | Magnetic bearing device |
| CN201278474Y (en) * | 2008-09-09 | 2009-07-22 | 浙江大学 | Mixed excitation type permanent magnet switch magnet link motor |
| CN203939869U (en) * | 2014-07-16 | 2014-11-12 | 南京化工职业技术学院 | A kind of permanent-magnetic biased axial radial magnetic bearing |
| CN104795953A (en) * | 2015-04-29 | 2015-07-22 | 山东大学 | Switch reluctance machine with stator separated from rotor |
| WO2016207492A1 (en) * | 2015-06-26 | 2016-12-29 | Lappeenrannan Teknillinen Yliopisto | A magnetic actuator for a magnetic suspension system |
| CN106936338A (en) * | 2017-04-11 | 2017-07-07 | 南京邮电大学 | A kind of four-degree-of-freedom composite construction bearing-free switch reluctance motor and control method |
| CN209892624U (en) * | 2019-04-22 | 2020-01-03 | 南京埃克锐特机电科技有限公司 | Electromagnetic radial magnetic bearing with E-shaped structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953249A (en) * | 2019-12-02 | 2020-04-03 | 北京泓慧国际能源技术发展有限公司 | Directional single magnetic circuit radial magnetic bearing and rotating device |
| CN112664561A (en) * | 2020-12-11 | 2021-04-16 | 庆安集团有限公司 | Dual-redundancy coil driving magnetic bearing for aircraft |
| CN112664561B (en) * | 2020-12-11 | 2022-07-12 | 庆安集团有限公司 | Dual-redundancy coil driving magnetic bearing for aircraft |
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