CN112065856B - Four-pole internal and external double-rotor hybrid magnetic bearing - Google Patents
Four-pole internal and external double-rotor hybrid magnetic bearing Download PDFInfo
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- CN112065856B CN112065856B CN202010982669.0A CN202010982669A CN112065856B CN 112065856 B CN112065856 B CN 112065856B CN 202010982669 A CN202010982669 A CN 202010982669A CN 112065856 B CN112065856 B CN 112065856B
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- 238000004804 winding Methods 0.000 claims abstract description 85
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 67
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 27
- 239000000725 suspension Substances 0.000 abstract description 12
- 230000003068 static effect Effects 0.000 abstract description 10
- 238000005339 levitation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- F16C32/0408—Passive 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
- 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
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
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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
- F16C32/048—Active magnetic bearings for rotary movement with active support of two degrees of freedom, e.g. radial 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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
- F16C2202/40—Magnetic
- F16C2202/44—Magnetic hard-magnetic, permanent magnetic, e.g. samarium-cobalt
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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
- F16C2320/00—Apparatus used in separating or mixing
- F16C2320/42—Centrifuges
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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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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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
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/55—Flywheel systems
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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 relates to the field of non-mechanical contact magnetic bearings, and discloses a quadrupole inner and outer dual-rotor hybrid magnetic bearing, which comprises a stator, an outer rotor and an inner rotor, wherein the stator comprises a left radial stator core, a right radial stator core, a stator permanent magnet ring and two magnetism isolating aluminum rings; the left and right radial stator cores are divided into four blocks of left outer and inner radial stator cores, right outer and inner radial stator cores by a magnetism isolating aluminum ring; 4 poles are uniformly distributed on each radial stator core, and are 2 poles in the X direction and the Y direction, and radial control windings are wound on the poles. The outer rotor comprises an outer rotor iron core, the inner rotor comprises an inner rotor iron core, the inner rotor iron core and the outer rotor iron core are opposite to the radial stator iron core in position, an outer air gap is formed between the radial stator iron core and the outer rotor iron core, and an inner air gap is formed between the radial stator iron core and the inner rotor iron core. The stator permanent magnet ring provides static bias magnetic flux, and the control magnetic flux generated by electrifying the control winding on the radial stator adjusts corresponding air gap magnetic flux; the stable suspension of the inner and outer rotors is realized by one stator.
Description
Technical Field
The invention relates to the technical field of non-mechanical contact magnetic bearings, in particular to a four-pole inner and outer dual-rotor hybrid magnetic bearing which can be used as a non-contact suspension support of high-speed transmission parts such as a flywheel system, a machine tool electric spindle, a centrifugal machine and the like.
Background
The magnetic bearing is a novel high-performance bearing which suspends a rotor in a space by utilizing electromagnetic force between a stator and the rotor so that the stator and the rotor are not in mechanical contact. Currently, magnetic bearings are classified into the following three types according to the manner in which magnetic force is provided: (1) the active magnetic bearing generates a bias magnetic field by bias current, and the control magnetic flux generated by the control current is mutually superposed with the bias magnetic flux so as to generate controllable suspension force, and the magnetic bearing has larger volume, weight and power consumption; (2) the passive magnetic bearing has the advantages that the suspension force is completely provided by the permanent magnet, the required controller is simple, the suspension power consumption is low, but the rigidity and the damping are small, and the passive magnetic bearing is generally applied to supporting an object in one direction or reducing the load acting on the traditional bearing; (3) the hybrid magnetic bearing adopts permanent magnetic materials to replace electromagnets in an active magnetic bearing to generate a bias magnetic field, and control current only provides control magnetic flux for balancing load or interference, thereby greatly reducing the power loss of the magnetic bearing, reducing the volume of the magnetic bearing, lightening the weight of the magnetic bearing and improving the bearing capacity.
The existing mixed magnetic bearing structure adopts a single stator and single rotor structure, and is difficult to meet the requirements of some special application fields.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a quadrupole inner and outer double-rotor mixed magnetic bearing structure, the inner and outer radial stators of the mixed magnetic bearing of the structure wind two groups of control windings, and one stator respectively controls the inner and outer double rotors to stably suspend, and meanwhile, the mixed magnetic bearing structure has the advantages of short axial length, compact structure, low power consumption and high suspension force density.
The technical scheme is as follows: the invention provides a quadrupole inner and outer double-rotor hybrid magnetic bearing, which comprises a stator, an inner rotor and an outer rotor, wherein the stator comprises a left radial stator core, a right radial stator core, a stator permanent magnet ring, a left magnetism isolating aluminum ring and a right magnetism isolating aluminum ring; the left radial stator core and the right radial stator core are divided into a left outer radial stator core, a left inner radial stator core, a right outer radial stator core and a right inner radial stator core by a left magnetism isolating aluminum ring and a right magnetism isolating aluminum ring respectively; the stator permanent magnet ring is connected with the left radial stator iron core and the right radial stator iron core; 4 poles are arranged on the left outer radial stator iron core, the left inner radial stator iron core, the right outer radial stator iron core and the right inner radial stator iron core at intervals and are divided into two poles in the X direction and two poles in the Y direction, and a radial control winding is wound on each pole; the outer rotor comprises an outer rotor iron core, the inner rotor comprises an inner rotor iron core, and the outer rotor iron core and the inner rotor iron core are opposite to the left radial stator iron core and the right radial stator iron core.
Furthermore, the inner rotor core is of an H-shaped structure along the radial section, and the outer circumferences of two sides of the inner rotor core are respectively opposite to the positions of the left inner side radial stator core and the right inner side radial stator core; the inner circumferences of two sides of the outer rotor iron core are opposite to the positions of the left outer side radial stator iron core and the right outer side radial stator iron core.
Furthermore, the winding directions of X-direction radial control windings on the left outer radial stator core are the same, and the winding directions of Y-direction radial control windings are the same; the winding directions of the X-direction radial control windings on the right outer side radial stator core are the same, the winding directions of the Y-direction radial control windings are the same, the winding directions of the left outer side radial stator core and the right outer side radial stator core are opposite to each other in the same direction, and the radial control windings on two sides in the same direction are mutually connected in series and are used for controlling two radial degrees of freedom of the outer rotor; the winding directions of the X-direction radial control windings on the left inner radial stator core are the same, and the winding directions of the Y-direction radial control windings are the same; the winding directions of the X-direction radial control windings on the right inner side radial stator core are the same, the winding directions of the Y-direction radial control windings are the same, the winding directions of the left inner side radial stator core and the right inner side radial stator core are opposite to each other, and the radial control windings on two sides in the same direction are mutually connected in series and used for controlling two radial degrees of freedom of the inner rotor.
Further, an outer air gap is formed between the outer rotor iron core and the left outer side radial stator iron core and between the outer rotor iron core and the right outer side radial stator iron core, and an inner air gap is formed between the inner rotor iron core and the left inner side radial stator iron core and between the inner rotor iron core and the right inner side radial stator iron core.
Furthermore, the left radial stator core, the right radial stator core, the outer rotor core and the inner rotor core are made of a whole piece of magnetic conductive material, and the stator permanent magnet ring is made of rare earth permanent magnet material.
Has the advantages that:
the stator permanent magnet rings respectively provide static bias magnetic fluxes for the inner rotor and the outer rotor, the control magnetic fluxes generated by electrifying the control windings on the radial stator are superposed with the corresponding bias magnetic fluxes, and suspension force is generated on the inner side of the outer rotor and the outer side of the inner rotor, so that the inner rotor and the outer rotor are stably suspended.
Drawings
FIG. 1 is a split and suspension magnetic flux diagram of a four-pole internal and external dual-rotor hybrid magnetic bearing according to the present invention;
fig. 2 is a radial suspension magnetic flux diagram of a four-pole internal and external dual-rotor hybrid magnetic bearing of the present invention.
The magnetic field generator comprises an outer rotor iron core 1, an inner rotor iron core 2, an outer air gap 3, an inner air gap 4, a left outer radial stator iron core 5, a right outer radial stator iron core 6, a left inner radial stator iron core 7, a right inner radial stator iron core 8, a stator permanent magnet ring 9, a right magnetic isolation aluminum ring 10, a radial control winding A, a radial control winding B12, a radial control winding C13, a radial control winding D14, a static bias magnetic flux I, a static bias magnetic flux II, an outer radial suspension control magnetic flux 17, an inner radial suspension control magnetic flux 18 and a left magnetic isolation aluminum ring 19.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention discloses a quadrupole inner and outer double-rotor hybrid magnetic bearing, which mainly comprises a stator, an outer rotor and an inner rotor, wherein the stator comprises a left radial stator iron core, a right radial stator iron core, a stator permanent magnet ring 9, a left magnetism isolating aluminum ring 19 and a right magnetism isolating aluminum ring 10. The left radial stator core and the right radial stator core are respectively divided into a left outer radial stator core 5, a left inner radial stator core 7, a right outer radial stator core 6 and a right inner radial stator core 8 by a left magnetism isolating aluminum ring 19 and a right magnetism isolating aluminum ring 10, and the stator permanent magnet ring 9 is connected with the left outer radial stator core 5, the left inner radial stator core 7, the right outer radial stator core 6 and the right inner radial stator core 8.
The four poles are arranged on the left outer radial stator core 5, the left inner radial stator core 7, the right outer radial stator core 6 and the right inner radial stator core 8 at intervals and are divided into two poles in the X direction and two poles in the Y direction, and a radial control winding is wound on each pole.
The radial control winding comprises a radial control winding A11, a radial control winding B12, a radial control winding C13 and a radial control winding D14, wherein the radial control winding A11 is wound on the left outer side radial stator core 5, the radial control winding B12 is wound on the right outer side radial stator core 6, the radial control winding C13 is wound on the left inner side radial stator core 7, and the radial control winding D14 is wound on the right inner side radial stator core 8. The radial control winding A11, the radial control winding B12, the radial control winding C13 and the radial control winding D14 are wound on the corresponding poles.
The radial control winding a11 on the left outer radial stator core 5 has the same winding direction in the X direction and the same winding direction in the Y direction. The winding directions of the X-direction radial control windings of the radial control winding B12 on the right outer radial stator core 6 are the same, the winding directions of the Y-direction radial control windings are the same, the winding directions of the left outer radial stator core 5 and the right outer radial stator core 6 are opposite, and the radial control windings on two sides in the same direction are mutually connected in series and used for controlling two radial degrees of freedom of the outer rotor.
The X-direction radial control winding direction of the radial control winding C13 on the left inner radial stator core 7 is the same, and the Y-direction radial control winding direction thereof is the same. The winding directions of the X-direction radial control windings D14 on the right inner side radial stator core 8 are the same, the winding directions of the Y-direction radial control windings are the same, the winding directions of the left inner side radial stator core 7 and the right inner side radial stator core 8 are opposite, and the radial control windings on two sides in the same direction are mutually connected in series and used for controlling two radial degrees of freedom of the inner rotor. The X-direction and the Y-direction are referenced in fig. 2.
The outer rotor includes outer rotor core 1, and the inner rotor includes inner rotor core 2, and outer rotor core 1, inner rotor core 2 are relative with left radial stator core, right radial stator core position, and in this embodiment, inner rotor core 2 is "H" shape structure along radial section, and its both sides outer circumference is relative with left inboard radial stator core 7 and right inboard radial stator core 8 position respectively. The inner circumferences of two sides of the outer rotor iron core 1 are opposite to the positions of the left outer radial stator iron core 5 and the right outer radial stator iron core 6. An outer air gap 3 is formed between the outer rotor iron core 1 and the left outer side radial stator iron core 5 and the right outer side radial stator iron core 6, and an inner air gap 4 is formed between the inner rotor iron core 2 and the left inner side radial stator iron core 7 and the right inner side radial stator iron core 8.
The left radial stator core, the right radial stator core, the outer rotor core 1 and the inner rotor core 2 are made of a whole piece of magnetic conductive material, and the stator permanent magnet ring 9 is made of rare earth permanent magnet material.
The stator permanent magnet ring 9 provides a first static bias magnetic flux 15 and a second static bias magnetic flux 16, and the magnetic circuit of the first static bias magnetic flux 15 is as follows: the magnetic flux starts from the N pole of the stator permanent magnet ring 9 and returns to the S pole of the stator permanent magnet ring 9 through the outer radial stator iron core, the outer radial air gap 3, the outer rotor iron core 1, the outer radial air gap 3 and the outer radial stator iron core. The magnetic circuit of the second static bias flux 16 is: the magnetic flux starts from the N pole of the stator permanent magnet ring 9 and returns to the S pole of the stator permanent magnet ring 9 through the inner radial stator core, the inner radial air gap 4, the inner rotor core 2, the inner radial air gap 4 and the inner radial stator core.
The radial control winding A11 and the radial control winding B12 are electrified to generate an outer radial levitation control magnetic flux 17, and the magnetic circuit is as follows: the outer radial stator core, the outer radial air gap 3, the outer rotor core 1 and the outer radial stator core form a closed loop.
The radial control winding C13 and the radial control winding D14 are electrified to generate an inner radial levitation control magnetic flux 18, and the magnetic circuit is as follows: the inner radial stator core, the inner radial air gap 4, the inner rotor core 2 and the inner radial stator core form a closed loop.
Suspension principle: the static bias magnetic flux I15 and the static bias magnetic flux II 16 interact with the outer radial levitation control magnetic flux 17 and the inner radial levitation control magnetic flux 18 in the radial direction, so that the superposition of air gap magnetic fields on the same side with the radial eccentricity direction of the rotor is weakened, the superposition of air gap magnetic fields in the opposite direction is strengthened, force opposite to the deflection direction of the rotor is generated on the rotor, and the rotor is pulled back to the radial balance position.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. A mixed magnetic bearing of inner and outer birotors of quadrupole, including stator, inner rotor and outer rotor, characterized by that, the said stator includes left radial stator core, right radial stator core, stator permanent magnet ring (9) and left, right magnetism isolating aluminium ring (19, 10); the left radial stator core and the right radial stator core are respectively divided into a left outer radial stator core (5), a left inner radial stator core (7), a right outer radial stator core (6) and a right inner radial stator core (8) by left and right magnetism isolating aluminum rings (19, 10); the stator permanent magnet ring (9) is connected with the left radial stator iron core and the right radial stator iron core; 4 poles are arranged on the left outer side radial stator iron core (5), the left inner side radial stator iron core (7), the right outer side radial stator iron core (6) and the right inner side radial stator iron core (8) at intervals and divided into two poles in the X direction and two poles in the Y direction, and a radial control winding is wound on each pole; the outer rotor comprises an outer rotor iron core (1), the inner rotor comprises an inner rotor iron core (2), and the outer rotor iron core (1) and the inner rotor iron core (2) are opposite to the left radial stator iron core and the right radial stator iron core.
2. The quadrupole inner-outer-double-rotor hybrid magnetic bearing according to claim 1, wherein the inner rotor core (2) has an "H" shaped structure in a radial section, and outer circumferences of both sides thereof are respectively opposite to the left inner radial stator core and the right inner radial stator core; the inner circumferences of two sides of the outer rotor iron core (1) are opposite to the positions of the left outer side radial stator iron core and the right outer side radial stator iron core.
3. The four-pole inner-outer dual-rotor hybrid magnetic bearing according to claim 1, wherein the X-direction radial control winding directions on the left-outer radial stator core (5) are the same, and the Y-direction radial control winding directions thereof are the same; the winding directions of X-direction radial control windings on the right outer side radial stator core (6) are the same, the winding directions of Y-direction radial control windings are the same, the winding directions of the left outer side radial stator core (5) and the right outer side radial stator core (6) are opposite to each other in the same direction, and the radial control windings on two sides in the same direction are mutually connected in series and are used for controlling two radial degrees of freedom of the outer rotor; the winding directions of X-direction radial control windings on the left inner radial stator core (7) are the same, and the winding directions of Y-direction radial control windings are the same; the winding directions of X-direction radial control windings on the right inner side radial stator core (8) are the same, the winding directions of Y-direction radial control windings are the same, the winding directions of the left inner side radial stator core (7) and the right inner side radial stator core (8) are opposite to each other, and the radial control windings on two sides in the same direction are mutually connected in series and used for controlling two radial degrees of freedom of the inner rotor.
4. The magnetic bearing according to claim 1, wherein the outer rotor core (1) forms an outer air gap (3) with the left and right outer radial stator cores, and the inner rotor core (2) forms an inner air gap (4) with the left and right inner radial stator cores.
5. The four-pole inner-outer dual-rotor hybrid magnetic bearing according to any one of claims 1 to 4, wherein the left radial stator core, the right radial stator core, the outer rotor core (1), and the inner rotor core (2) are made of a single piece of magnetic conductive material, and the stator permanent magnet ring (9) is made of rare earth permanent magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982669.0A CN112065856B (en) | 2020-09-17 | 2020-09-17 | Four-pole internal and external double-rotor hybrid magnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982669.0A CN112065856B (en) | 2020-09-17 | 2020-09-17 | Four-pole internal and external double-rotor hybrid magnetic bearing |
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| Publication Number | Publication Date |
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| CN112065856A CN112065856A (en) | 2020-12-11 |
| CN112065856B true CN112065856B (en) | 2022-03-29 |
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| CN103470630B (en) * | 2013-09-18 | 2016-06-22 | 北京航空航天大学 | A kind of repulsion type combination magnet radially passive magnetic bearing |
| CN204186802U (en) * | 2014-09-11 | 2015-03-04 | 江苏大学 | A kind of Novel shaft-radial three freedom degree mixed magnetic bearing |
| CN104377922A (en) * | 2014-11-25 | 2015-02-25 | 东南大学 | Dual-rotor switched reluctance motor with flux adjustment winding |
| JP2020118261A (en) * | 2019-01-25 | 2020-08-06 | シナノケンシ株式会社 | Speed reducer and motor with speed reducer |
| CN110676998A (en) * | 2019-08-30 | 2020-01-10 | 北斗航天汽车（北京）有限公司 | Dual-rotor motor structure |
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