CN108895085B - Inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing - Google Patents
Inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing Download PDFInfo
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- CN108895085B CN108895085B CN201811010158.1A CN201811010158A CN108895085B CN 108895085 B CN108895085 B CN 108895085B CN 201811010158 A CN201811010158 A CN 201811010158A CN 108895085 B CN108895085 B CN 108895085B
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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
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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
-
- 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
- F16C32/0485—Active magnetic bearings for rotary movement with active support of three degrees of freedom
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses an inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing, wherein a radial stator is coaxially sleeved on the left side in a rotor, an axial stator is coaxially sleeved on the right side in the rotor, six radial magnetic poles are uniformly distributed on the outer circumferential surface of a radial stator yoke along the circumference, each radial magnetic pole is wound with a radial control coil, the outer edge part of the top end of an axial stator cylinder of the axial stator extends to face to form a circular axial magnetic pole, the axial stator cylinder is internally provided with the axial control coils, the radial magnetic poles and the rotor are kept with air gaps, an air gap is kept between the axial magnetic poles and a thrust disc on the rotor, a permanent magnet is fixedly embedded between the radial stator yoke and the axial stator cylinder, and the six radial control coils are connected in series to form a set of three-phase winding, and compared with the driving of a direct current power amplifier, the cost is reduced, and the power loss is reduced; the symmetry of the hexapole structure of the invention reduces the coupling between two radial degrees of freedom and reduces the nonlinearity between the levitation force and the current.
Description
Technical Field
The invention belongs to the field of non-mechanical contact magnetic bearings, and particularly relates to an inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing.
Background
The magnetic bearing utilizes magnetic field force to realize rotor suspension, so that no mechanical contact exists between the rotor and the stator, and the magnetic bearing has the advantages of no friction, no abrasion, high speed, high precision, no lubrication, long service life and the like which are incomparable with a series of traditional bearings. The magnetic bearings can be classified into active (levitation force generated by a coil current), passive (levitation force generated by a permanent magnet), and hybrid (levitation force generated by a coil current and a control coil together) according to the generation manner of levitation force. The mixed type magnetic bearing utilizes the permanent magnet to provide bias magnetic flux, so that the number of turns of the coil can be reduced, the power loss can be reduced, the volume of the magnetic bearing can be reduced, and the magnetic bearing structure can be more compact. The degree of freedom can be classified into a single degree of freedom magnetic bearing (axial magnetic bearing), a two degree of freedom magnetic bearing (radial magnetic bearing), and a three degree of freedom magnetic bearing (axial-radial magnetic bearing). The three-degree-of-freedom magnetic bearing combines the radial magnetic bearing and the axial magnetic bearing, reduces the overall axial length, and is beneficial to improving the critical rotation speed of the rotor.
In the document of Chinese patent publication No. CN201326646, named as a heteropolarity permanent magnet biased axial radial magnetic bearing, a double-disc octapole magnetic bearing is proposed, and the structure needs to be driven by two bipolar or four unipolar direct current power amplifiers, and has large volume and high cost. To reduce overall cost, a three-phase inverter may be used to drive the magnetic bearings to reduce switching losses. In the document of Chinese patent publication No. CN1737388, named as "three-degree-of-freedom alternating-direct-current radial-axial hybrid magnetic bearing and control method thereof", a structure with three poles adopted in the radial direction is proposed and driven by a three-phase inverter. Because of the spatial asymmetry of the three-pole structure and the characteristic that the sum of three-phase currents must be zero, the maximum bearing capacity in the positive direction of the magnetic pole is larger than the maximum bearing capacity in the negative direction of the magnetic pole, and in order to meet the maximum bearing capacity condition when designing the magnetic bearing, the volume of the magnetic bearing must be increased. In addition, the asymmetric structure enhances the coupling between two radial degrees of freedom and increases the nonlinearity between the levitation force of the magnetic bearing and the current.
Disclosure of Invention
According to the defects and the shortcomings of the prior art, the invention provides the axial-radial six-pole hybrid magnetic bearing which has compact structure, low cost and low power consumption and is driven by the three-phase inverter, and the symmetrical structure of six-pole arrangement can reduce the coupling between the nonlinearity of the levitation force and the two radial degrees of freedom; the compact structure reduces the axial length of the magnetic bearing and increases the critical rotation speed of the rotor.
The technical scheme adopted by the invention is as follows:
the inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing comprises a fixed shaft, a rotor, an axial stator, a radial stator and a permanent magnet which are coaxially arranged, wherein the rotor is sleeved on the fixed shaft in an empty mode, the axial stator, the radial stator and the permanent magnet are sleeved in an inner sleeve mode, and the axial stator, the radial stator and the permanent magnet are sequentially fixedly sleeved on the fixed shaft; the radial stator and the rotor are provided with radial air gaps, the radial stator comprises a radial stator yoke and radial magnetic poles, the radial stator yoke is sleeved on the fixed shaft in a circular ring shape, six identical radial magnetic poles uniformly distributed in the circumferential direction extend outwards from the radial stator yoke in the radial direction, and the radial magnetic poles are respectively wound with identical radial control coils; the axial stator consists of an axial stator cylinder and 2 axial magnetic poles, the axial stator cylinder is sleeved on the fixed shaft, the 2 axial magnetic poles are symmetrically arranged on the stator cylinder, a cavity is formed between the 2 axial magnetic poles, an axial control coil is arranged in the cavity along the inner wall of the axial stator cylinder, and a certain gap is reserved between the axial control coil and the axial control coil; and a thrust disc is arranged at a gap formed by the rotor facing the 2 axial magnetic poles, and an axial air gap is reserved between the thrust disc and the left and right axial magnetic poles, and the axial air gaps are the same in size.
Further, the permanent magnet is annular, the permanent magnet is made of rare earth Ru-Fe-B permanent magnet materials, the permanent magnet is magnetized along the axial direction, the contact end of the permanent magnet with the radial stator is N pole, and the contact end of the permanent magnet with the axial stator is S pole.
Further, the radial control coils on two opposite radial magnetic poles in the six same radial magnetic poles are identical in winding direction and connected in series, and the radial control coils form three-phase windings and are driven by a three-phase inverter by adopting star-shaped links.
Furthermore, the rotor and the radial stator are formed by laminating silicon steel sheets, the radial control coil and the axial control coil are made of lacquered insulated copper wires with nominal diameters of 0.67mm, and the axial stator is made of ferrosilicon alloy materials.
Further, the axial length of the rotor is larger than the axial total length of the radial stator, the permanent magnet and the axial stator.
Further, the distance between the axial air gap and the radial air gap can be selected to be 0.3-2mm, and the radial distance from the axial stator cylinder to the rotor is far greater than the lengths of the axial air gap and the radial air gap.
The invention has the beneficial effects that:
1. the invention adopts the hybrid magnetic bearing, the bias magnetic flux provided by the permanent magnet generates static levitation force, the control magnetic flux provided by the radial control coil generates dynamic levitation force to overcome external disturbance force and load, so that the rotor is suspended in three degrees of freedom and is in a balance position; the number of turns of the coil of the magnetic bearing is reduced, the volume is reduced, the structure is compact, the power consumption is reduced, and the heat dissipation performance is good;
2. and compared with a combined structure of a two-degree-of-freedom radial magnetic bearing and a single-degree-of-freedom axial magnetic bearing, the axial length is greatly reduced and the critical rotation speed of the rotor is improved under the condition of the same power by adopting an axial-radial three-degree-of-freedom structure.
3. The three-phase inverter is adopted for driving, so that the number of switching tubes is reduced, and the switching loss and the driving cost are reduced; the three-phase inverter is controlled by the DSP processor, so that compared with the traditional magnetic bearing, the control is simplified, and the manufacturing and running cost is reduced;
4. the symmetrical hexapole structure is adopted, so that the nonlinearity caused by the asymmetry of the tripolar structure is optimized, the linearity of the force flow characteristic of the levitation force is improved, the coupling between two radial degrees of freedom is reduced, and the control difficulty is reduced.
Drawings
FIG. 1 is an inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing of the present invention;
FIG. 2 is a cross-sectional left side view of A-A of FIG. 1;
FIG. 3 is a mounting block diagram of the axial stator and axial control coil of FIG. 2;
FIG. 4 is a schematic diagram of an axial magnetic circuit of the present invention;
FIG. 5 is a schematic view of a radial magnetic circuit of the present invention;
in the figure, 1, a rotor, 2, an axial stator, 21, 22, axial magnetic poles, 23, an axial stator cylinder, 211, axial control magnetic flux; 3. radial stator, 31, radial stator yoke, 311, 312, radial control flux, 321, 322, 323, 324, 325, 326, radial pole, 41, 42, 43, 44, 45, 46, control coil, 5, axial control coil, 6, permanent magnet, 61, bias flux, 71, 72, axial air gap, 8 radial air gap, 9 thrust disk, 10, stationary shaft.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, an inverter-driven outer rotor axial-radial six-pole hybrid magnetic bearing comprises a fixed shaft 10, a rotor 1, an axial stator 2, a radial stator 3 and a permanent magnet 6 which are coaxially arranged, wherein the rotor 1 is sleeved on the fixed shaft 10 in an empty mode, the axial stator 2, the radial stator 3 and the permanent magnet 6 are sleeved in an inner sleeve manner, the magnet 6 is in a circular ring shape, the permanent magnet 6 is made of rare earth Ru-Fe-B permanent magnet materials, the permanent magnet 6 is magnetized along the axial direction, the contact end of the permanent magnet 6 with the radial stator 3 is an N pole, and the contact end of the permanent magnet 6 with the axial stator 2 is an S pole, and the axial stator 2, the radial stator 3 and the permanent magnet 6 are sequentially fixedly sleeved on the fixed shaft 10; the radial stator 3 has a radial air gap 8 with the rotor 1. The rotor 1 and the radial stator 3 are formed by laminating silicon steel sheets, the radial control coil and the axial control coil 5 are made of lacquered insulated copper wires with nominal diameters of 0.67mm, and the axial stator 2 is made of ferrosilicon alloy materials. The axial length of the rotor 1 is larger than the axial total length of the radial stator 3, the permanent magnet 6 and the axial stator 2.
As shown in fig. 5, the radial stator 3 includes a radial stator yoke 31 and radial magnetic poles, the radial stator yoke 31 is sleeved on the fixed shaft 10 in a ring shape, six identical radial magnetic poles 321, 322, 323, 324, 325, 326 are uniformly distributed in the circumferential direction extending radially outwards from the radial stator yoke 31, and identical radial control coils 41, 42, 43, 44, 45, 46 are respectively wound on the radial magnetic poles 321, 322, 323, 324, 325, 326; the radial control coils on two opposite radial magnetic poles 321, 322, 323, 324, 325 and 326 of the six same radial magnetic poles have the same winding direction and are connected in series, and the radial control coils 41, 42, 43, 44, 45 and 46 form a three-phase winding which is driven by a three-phase inverter by adopting star-shaped links.
As shown in fig. 2 and 3, the axial stator 2 is composed of an axial stator cylinder 23 and 2 axial magnetic poles 21 and 22, the axial stator cylinder 23 is sleeved on the fixed shaft 10, the 2 axial magnetic poles 21 and 22 are symmetrically arranged on the axial stator cylinder 23, a cavity is formed between the 2 axial magnetic poles 21 and 22, an axial control coil 5 is arranged in the cavity along the inner wall of the axial stator cylinder 23, a certain gap is reserved between the axial control coil 5 and the axial control coil, and the axial control coil 5 is preferably arranged in the middle and has a gap with the left and right inner walls of the axial stator cylinder 23 so as to facilitate heat dissipation; a thrust disc 9 is arranged at a gap formed by the rotor 1 facing the 2 axial magnetic poles 21, 22, the thrust disc 9 and the left and right axial magnetic poles 21, 22 leave axial air gaps 71, 72, and the axial air gaps 71, 72 have the same size.
In this embodiment, the axial air gaps 71, 72 and the radial air gap 8 are spaced apart by 0.3-2mm, and the radial distance of the axial stator cylinder 23 from the rotor 1 should be much greater than the lengths of the axial air gaps 71, 72 and the radial air gap 8.
For a clearer understanding of the technical solution of the present invention, the following is further explained in connection with the working procedure of the present invention:
as shown in fig. 4, when the bearing provided by the invention works, the bias magnetic flux 61 generated by the permanent magnet 6 flows into the radial stator yoke 31 from the N pole of the permanent magnet 6, flows into the radial magnetic poles 321, 322, 323, 324, 325 and 326 from the radial stator yoke 31, flows into the stator through the radial air gap 8, then flows into the thrust disk 9 from the stator, flows into the axial magnetic poles 21 and 22 through the axial air gaps 71 and 72 after being uniformly divided into two parts after flowing out from the thrust disk 9, flows into the axial stator cylinder 23 from the axial magnetic poles 21 and 22, and finally flows into the permanent magnet S pole from the axial stator cylinder 23, thus forming a closed loop. Due to the use of the permanent magnets 6, power losses are reduced. When the axial control coil 5 is supplied with forward current, the generated axial control magnetic flux 211 enters the axial air gap 71 from the axial magnetic pole 21, enters the axial air gap 72 from the axial air gap 71 after entering the thrust disk 9, and flows into the axial stator cylinder from the axial air gap 72 after flowing into the axial magnetic pole 22. The axial control magnetic flux 211 is opposite to the bias magnetic flux 61 in the air gap 71 and counteracts each other. The axial control magnetic flux 211 is in the same direction as the bias magnetic flux 61 in the air gap 72, and the magnetic flux in the air gap is enhanced, so that axial levitation force in the direction of the axial magnetic pole 22 is generated; when negative current is introduced into the axial control coil 5, the generated axial control magnetic flux 211 enters the axial air gap 72 from the axial magnetic pole 22, then enters the axial air gap 71 from the axial air gap 72 after entering the thrust disk 9, and flows into the axial stator cylinder from the axial air gap 71 after flowing into the axial magnetic pole 21 to form a closed loop. The axial control flux 211 is opposite in direction to the bias flux 62 in the air gap 72 and counteracts each other. The axial control magnetic flux 211 is in the same direction as the bias magnetic flux 61 in the air gap 71, and the magnetic flux in the air gap is enhanced, thereby generating axial levitation force in the direction of the axial magnetic pole 21. Therefore, by controlling the direction and magnitude of the current in the axial control coil 5, the direction and magnitude of the axial levitation force can be controlled.
As shown in fig. 5, the bias magnetic flux 61 enters the radial stator yoke 31 and flows into the radial magnetic poles 321, 322, 323, 324, 325, 326, and the radial magnetic poles 321, 322, 323, 324, 325, 326 flow into the radial air gap 8 and then enter the rotor 1; when the radial control coils 41 and 44 on the two radial magnetic poles 321 and 324 opposite to each other are supplied with forward current, the bias magnetic flux 61 and the radial control magnetic fluxes 311 and 312 in the upper radial air gap 8 are superposed, the magnetic fluxes are enhanced, and the bias magnetic flux 61 and the radial control magnetic fluxes 311 and 312 in the lower radial air gap 8 cancel each other, so that radial levitation force in the direction of the radial magnetic pole 321 is generated. When opposite currents are applied to the radial control coils, opposite radial levitation forces are generated. Similarly, current is applied to the radial control coils 42 and 45 to generate radial levitation force in the direction of the radial magnetic pole 322 or the radial magnetic pole 325, and current is applied to the radial control coils 43 and 46 to generate radial levitation force in the direction of the radial magnetic pole 323 or the radial magnetic pole 326. Therefore, by controlling the magnitude and direction of the current in the radial control coil, the radial levitation force with different magnitudes in each direction can be obtained.
The above embodiments are merely for illustrating the design concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, the scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present invention are within the scope of the present invention.
Claims (8)
1. The inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing is characterized by comprising a fixed shaft (10), a rotor (1), an axial stator (2), a radial stator (3) and a permanent magnet (6) which are coaxially arranged, wherein the rotor (1) is sleeved on the fixed shaft (10) in an empty mode, and the axial stator (2), the radial stator (3) and the permanent magnet (6) are sleeved in the rotor; the axial stator (2), the radial stator (3) and the permanent magnet (6) are sequentially and fixedly sleeved on the fixed shaft (10);
the radial stator (3) and the rotor (1) are provided with radial air gaps (8), the radial stator (3) comprises a radial stator yoke (31) and radial magnetic poles, the radial stator yoke (31) is sleeved on the fixed shaft (10) in a circular ring shape, six identical radial magnetic poles uniformly distributed in the circumferential direction extend outwards from the radial stator yoke (31) in the radial direction, and the identical radial control coils are respectively wound on the radial magnetic poles;
the axial stator (2) is composed of an axial stator cylinder (23) and 2 axial magnetic poles, the axial stator cylinder (23) is sleeved on the fixed shaft (10), the 2 axial magnetic poles are symmetrically arranged on the stator cylinder (23), a cavity is formed between the 2 axial magnetic poles, an axial control coil (5) is arranged in the cavity along the inner wall of the axial stator cylinder (23), and a gap is reserved between the axial control coil (5) and the inner wall of the axial stator cylinder (23); a thrust disc (9) is arranged at a gap between the 2 opposite axial magnetic poles of the rotor (1), an axial air gap is reserved between the thrust disc (9) and the 2 axial magnetic poles, and the axial air gaps are the same in size.
2. The inverter driven outer rotor axial-radial six-pole hybrid magnetic bearing of claim 1, wherein the permanent magnet (6) is annular, and the permanent magnet (6) is made of rare earth Ru-Fe-B permanent magnet material.
3. An inverter driven outer rotor axial-radial six-pole hybrid magnetic bearing according to claim 1 or 2, wherein the permanent magnet (6) is magnetized in the axial direction, the contact end of the permanent magnet (6) with the radial stator (3) is N pole, and the contact end with the axial stator (2) is S pole.
4. The inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing of claim 1, wherein radial control coils on two opposite radial magnetic poles of the six identical radial magnetic poles are wound in the same direction and in series, and the six radial control coils form a three-phase winding, and are driven by a three-phase inverter by adopting star-shaped links.
5. An inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing according to claim 1, characterized in that the rotor (1) and radial stator (3) are laminated from silicon steel sheets.
6. An inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing according to claim 1, characterized in that the radial control coils and the axial control coils (5) are lacquered insulated copper wires with nominal diameter of 0.67mm.
7. An inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing according to claim 1, characterized in that the axial stator (2) is made of ferrosilicon alloy material.
8. An inverter driven outer rotor axial-radial hexapole hybrid magnetic bearing according to claim 1, characterized in that the axial and radial air gaps (8) are spaced apart by a distance of 0.3-2mm, the radial distance of the axial stator cylinder (23) to the rotor (1) being greater than the length of the axial and radial air gaps (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010158.1A CN108895085B (en) | 2018-08-31 | 2018-08-31 | Inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010158.1A CN108895085B (en) | 2018-08-31 | 2018-08-31 | Inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing |
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| Publication Number | Publication Date |
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| CN108895085A CN108895085A (en) | 2018-11-27 |
| CN108895085B true CN108895085B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811010158.1A Active CN108895085B (en) | 2018-08-31 | 2018-08-31 | Inverter driving type outer rotor axial-radial six-pole hybrid magnetic bearing |
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| CN112039382B (en) * | 2020-09-01 | 2021-09-24 | 常州工学院 | Three-phase four-wire driving method of hexapole radial-axial hybrid magnetic bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737388A (en) * | 2005-05-18 | 2006-02-22 | 江苏大学 | AC-DC radial-axial mixed magnetic bearing having three degrees of freedom and method for controlling the same |
| JP2010106908A (en) * | 2008-10-29 | 2010-05-13 | Oitaken Sangyo Sozo Kiko | Magnetic bearing |
| CN106763184A (en) * | 2017-02-15 | 2017-05-31 | 江苏大学 | A kind of sextupole radial-axial hybrid magnetic bearing |
| CN106949142A (en) * | 2017-02-15 | 2017-07-14 | 江苏大学 | A kind of radial-axial hybrid magnetic bearing of external rotor radial sextupole |
| CN107191484A (en) * | 2017-04-27 | 2017-09-22 | 江苏大学 | A kind of design method of the three freedom degree mixed magnetic bearing of radial direction sextupole |
| CN208804115U (en) * | 2018-08-31 | 2019-04-30 | 江苏大学 | A kind of inverter-driven outer roller axial-radial direction sextupole hybrid magnetic bearing |
-
2018
- 2018-08-31 CN CN201811010158.1A patent/CN108895085B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1737388A (en) * | 2005-05-18 | 2006-02-22 | 江苏大学 | AC-DC radial-axial mixed magnetic bearing having three degrees of freedom and method for controlling the same |
| JP2010106908A (en) * | 2008-10-29 | 2010-05-13 | Oitaken Sangyo Sozo Kiko | Magnetic bearing |
| CN106763184A (en) * | 2017-02-15 | 2017-05-31 | 江苏大学 | A kind of sextupole radial-axial hybrid magnetic bearing |
| CN106949142A (en) * | 2017-02-15 | 2017-07-14 | 江苏大学 | A kind of radial-axial hybrid magnetic bearing of external rotor radial sextupole |
| CN107191484A (en) * | 2017-04-27 | 2017-09-22 | 江苏大学 | A kind of design method of the three freedom degree mixed magnetic bearing of radial direction sextupole |
| CN208804115U (en) * | 2018-08-31 | 2019-04-30 | 江苏大学 | A kind of inverter-driven outer roller axial-radial direction sextupole hybrid magnetic bearing |
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