CN112865609A - Magnetic suspension motor - Google Patents
Magnetic suspension motor Download PDFInfo
- Publication number
- CN112865609A CN112865609A CN202110232203.3A CN202110232203A CN112865609A CN 112865609 A CN112865609 A CN 112865609A CN 202110232203 A CN202110232203 A CN 202110232203A CN 112865609 A CN112865609 A CN 112865609A
- Authority
- CN
- China
- Prior art keywords
- coil
- rotor
- stator
- suspension
- permanent magnet
- 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.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a magnetic suspension motor, which comprises a rotor and a stator, wherein: the rotor comprises a first permanent magnet ring and a plurality of first iron cores which extend outwards along the radial direction of the first permanent magnet ring, and the rotor is rotatably arranged in the stator; the stator comprises a plurality of coil windings and sensors, the coil windings comprise a second iron core, a suspension coil and a driving coil, the second iron core extends in the axial direction, the suspension coil and the driving coil are wound on the second iron core and are sequentially arranged in the axial direction, the suspension coil is used for suspending the rotor in the stator, and the driving coil is used for driving the rotor to rotate; the sensor is connected with the suspension coil and used for controlling the radial suspension gap of the rotor. According to the technical scheme, the suspension and the driving rotation of the rotor are realized through the suspension coil and the driving coil on the stator respectively, the suspension structure is simple, the structure of the magnetic suspension motor is greatly simplified, and therefore the compact structure and the light weight of the magnetic suspension motor are realized.
Description
Technical Field
The invention relates to the field of motors, in particular to a magnetic suspension motor.
Background
The traditional motor is composed of a stator and a rotor, the stator and the rotor are connected through a mechanical bearing or are in mechanical contact, so that mechanical friction exists in the movement process of the rotor, the mechanical friction not only increases the friction resistance of the rotor, so that moving parts are abraded, mechanical vibration and noise are generated, but also the parts are heated, so that the performance of a lubricant is deteriorated, the air gap of the motor is seriously uneven, the winding is heated, the temperature rise is increased, the efficiency of the motor is reduced, and the service life of the motor is shortened. The magnetic suspension motor makes the rotor suspend by using the principle of like poles repelling and opposite poles attracting between the stator and rotor excitation magnetic field, and generates driving force to drive the rotor to move in the suspension state. Therefore, the stator and the rotor do not have any mechanical contact, can generate higher acceleration and deceleration, has small mechanical abrasion, easy protection of machinery and a motor, convenient maintenance, overhaul and replacement, and is suitable for the fields of severe environment, extremely cleanness, no pollution and special requirements.
Most of the existing magnetic suspension motors need to be provided with suspension structures at two ends of a rotor, so that the motor structure is relatively complex, the compact structure and the light weight cannot be realized, and further application space of the magnetic suspension motor is limited.
Disclosure of Invention
The invention mainly aims to provide a magnetic suspension motor, aiming at realizing the compact structure and light weight of the magnetic suspension motor by improving and optimizing the motor structure.
In order to achieve the above object, the present invention provides a magnetic levitation motor, including:
the rotor comprises a first permanent magnet ring and a plurality of first iron cores extending outwards along the radial direction of the first permanent magnet ring, and the first iron cores are distributed along the circumferential direction of the first permanent magnet ring;
a stator, the rotor rotatably disposed within the stator, the stator comprising:
the coil windings are distributed at intervals along the circumferential direction of the rotor and comprise a second iron core, a suspension coil and a driving coil, the second iron core extends axially, the suspension coil and the driving coil are wound on the second iron core and are sequentially arranged axially, the suspension coil is used for suspending the rotor in the stator, and the driving coil is used for driving the rotor to rotate; and
and the sensor is connected with the suspension coil and used for controlling the radial suspension gap of the rotor.
Preferably, the second core has a magnetic conductive protrusion extending inward in a radial direction of the stator;
the first iron core and the magnetic conduction bulge are arranged at an opposite interval.
Preferably, the magnetic conduction bulge is located at one end of the second iron core, and the suspension coil is arranged close to the magnetic conduction bulge.
Preferably, the first iron core is arranged at one end of the first permanent magnet ring, and the other end of the first permanent magnet ring is arranged back to the stator.
Preferably, the stator further includes a second permanent magnet ring extending along the circumferential direction of the rotor, the rotor is disposed in the second permanent magnet ring at intervals, the second permanent magnet ring is fixed at one end of the second iron core, and the second permanent magnet ring is located on one side of the magnetic conductive protrusion back to the suspension coil.
Preferably, the suspension coil and the magnetic conduction bulge are arranged at intervals.
Preferably, the number of the first iron cores is at least four; the number of the coil windings is at least four groups.
Preferably, the number of the first cores is four, and the number of the coil windings is six.
Preferably, the stator further includes a magnetic-conductive fixing seat, one end of the second iron core is fixed to the magnetic-conductive fixing seat, and the plurality of coil windings and the magnetic-conductive fixing seat enclose to form an accommodating space for accommodating the rotor to rotate.
Preferably, the suspension coil and the driving coil are arranged at intervals.
According to the technical scheme, the novel stator structure and the novel rotor structure are designed, the rotor is suspended and driven to rotate through the suspension coil and the driving coil on the stator respectively, the suspension structure is simple, the structure of the magnetic suspension motor is greatly simplified, and therefore the compact structure and the light weight of the magnetic suspension motor are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a magnetic levitation motor according to an embodiment of the present invention;
fig. 2 is a schematic exploded view of a stator and a rotor of the magnetic levitation motor of fig. 1;
FIG. 3 is an exploded view of the stator of FIG. 2;
FIG. 4 is an exploded view of the rotor of FIG. 2;
FIG. 5 is a schematic view of the magnetic levitation motor of FIG. 1 from another perspective;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic diagram of the transmission of magnetic field lines of the magnetic levitation motor of FIG. 5;
fig. 8 is an installation diagram of the coil winding and the magnetic conductive fixing seat of the stator in fig. 2.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
220 | Second |
| 10 | |
230 | Magnetic |
| 20 | |
211 | |
| 101 | |
212 | |
| 102 | First |
213 | |
| 210 | Coil winding | 214 | Driving coil |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The heart is a perpetual motion machine in life, once the heart fails and is difficult to repair, the heart function is partially or completely replaced by the artificial heart to become a key for prolonging the life of a patient with the heart disease, in the past, the artificial heart pump using a mechanical bearing can generate friction and heat to damage blood cells, so that hemolysis, coagulation and thrombus are caused, and even the life of the patient is threatened, and the blood pump using the magnetic suspension motor has high efficiency, can prevent the damage of the blood cells, avoids the problems of hemolysis, coagulation and thrombus and the like, is favorable for relieving the suffering of patients with cardiovascular diseases, and improves the life quality of the patient.
The development of very large scale integrated circuits requires that semiconductor silicon wafers be processed in an ultra-vacuum, impurity-free sealed chamber, which has harsh requirements on robots that transport silicon wafers: lubricating oil can not be used, and dust particles and gas can not be generated, so that the magnetic suspension motor is adopted to directly control the robot and the control arm of the robot to be an ideal choice.
In the field of chemical engineering, radioactive environments or high-temperature radiation environments with serious environmental pollution, such as magnetic suspension motors for driving, can solve the problems of mechanical bearing abrasion and periodic maintenance.
The invention provides a magnetic suspension motor which is suitable for the fields of medical blood pumps, semiconductors and chemical engineering.
In an embodiment of the present invention, referring to fig. 1 to 7, the magnetic levitation motor 1 includes:
the rotor 10 comprises a first permanent magnet ring 102 and a plurality of first iron cores 101 extending outwards along the radial direction of the first permanent magnet ring 102, wherein the plurality of first iron cores 101 are distributed along the circumferential direction of the first permanent magnet ring 102;
a stator 20, the rotor 10 being rotatably disposed within the stator 20, the stator 20 including:
a plurality of coil windings 210 distributed at intervals along the circumferential direction of the rotor 10, wherein each coil winding 210 includes a second iron core 211, a suspension coil 213 and a driving coil 214, the second iron core 211 extends in the axial direction, the suspension coil 213 and the driving coil 214 are wound on the second iron core 211, the suspension coil 213 and the driving coil 214 are sequentially arranged in the axial direction, the suspension coil 213 is used for suspending the rotor 10 in the stator 20, and the driving coil 214 is used for driving the rotor 10 to rotate; and
and a sensor connected to the levitation coil 213 for controlling a radial levitation gap of the rotor 10.
Specifically, in the magnetic levitation motor 1, the stator 20 can generate levitation force and rotational driving force to the rotor 10, so that the rotor 10 can be levitated and rotated in the stator 20. The rotor 10 includes a first permanent magnet ring 102 and a first iron core 101, the first permanent magnet ring 102 is magnetized in an axial direction, and the first permanent magnet ring 102 is made of a high magnetic flux density permanent magnet material, such as a neodymium iron boron permanent magnet, a permanent magnetic ferrite, a ferrochrome-cobalt permanent magnet alloy material, and the like. For the stator 20, the stator 20 has a housing (not shown), the coil winding 210 is fixedly disposed in the housing, two groups of coils, namely, a levitation coil 213 and a driving coil 214, are respectively wound on the second iron core 211, the levitation coil 213 and the driving coil 214 are energized and operated independently from each other, the levitation coil 213 suspends the first permanent magnet ring 102 and the first iron core 101 in an excitation levitation magnetic field by generating the excitation levitation magnetic field, and the driving coil 214 generates the excitation driving magnetic field, so that the rotor 10 is driven to rotate. In the axial direction of the magnetic suspension motor 1, the first permanent magnet ring 102 and the first iron core 101 are subjected to an axial suspension force in an excitation suspension magnetic field, and are further stably suspended in the stator 20 in the axial direction; in the radial direction of the magnetic levitation motor 1, a sensor (not shown) is used for detecting the radial deflection of the rotor 10, the current of the levitation coil 213 is controlled according to the radial deflection of the rotor 10 fed back by the sensor, and the radial deflection of the rotor 10 is adjusted to ensure that a stable radial air gap is maintained between the rotor 10 and the stator 20. It will be appreciated that the rotor 10 is passively controlled by the field levitating magnetic field in the axial levitation direction, while the rotor 10 is actively controlled in the radial levitation direction based on the radial offset of the rotor 10. It should be noted that the suspension coil 213 and the driving coil 214 disposed on the second iron core 211 are sequentially arranged in the axial direction, and the suspension coil 213 and the driving coil 214 respectively work independently, and the magnitude, frequency and waveform of the current flowing into the suspension coil 213 and the driving coil 214 are different, so that the generated excitation driving magnetic field and the excitation suspension magnetic field do not have the phenomenon of magnetic field coupling, and it is ensured that the rotor 10 is suspended and rotated independently relative to the stator 20, and they do not affect each other.
The first iron core 101 is preferably disposed at one end of the first permanent magnet ring 102, and the other end of the first permanent magnet ring 102 is disposed opposite to the stator 20. The sensors may be provided at a plurality of positions, and may be provided on the rotor 10 or the stator 20. For example, when the sensor is located on the rotor 10, the sensor may be located on a side of the first iron core 101 facing away from the first permanent magnet ring 102, the sensor is located at the axial center of the rotor 10, and thus the radial offset of the rotor 10 relative to the stator 20 may be detected; when the sensor is located on the stator 20, the sensor may be disposed between two adjacent coil windings 210, that is, the sensor is distributed in the gap between two adjacent second cores 211. The sensor can adopt hall components to realize the detection of the radial deviation of the rotor 10.
In this embodiment, the rotor 10 includes a plurality of first cores 101, the first cores 101 extend along an axial direction of the first permanent magnet ring 102, the plurality of first cores 101 are uniformly and distributed at intervals along a circumferential direction of the first permanent magnet ring 102, and the number of the first cores 101 is at least four; the stator 20 also includes a plurality of coil windings 210, the plurality of coil windings 210 are uniformly distributed at intervals along the circumferential direction of the rotor 10, the rotor 10 is located in a space region defined by the plurality of coil windings 210, and the number of the coil windings 210 is at least four. In a preferred embodiment of the present invention, the number of the first iron cores 101 is four, and the first iron cores are arranged in a cross shape, and the number of the coil windings 210 is six, so that the magnetic levitation motor 1 can better consider both the levitation stability and the structural compactness.
The levitation coil 213 and the driving coil 214 may be disposed in contact with each other in sequence, or the levitation coil 213 and the driving coil 214 may be disposed at an interval. In this embodiment, the levitation coil 213 and the driving coil 214 are preferably arranged at intervals, so that the mutual interference between the excitation driving magnetic field and the excitation levitation magnetic field can be reduced.
According to the technical scheme, the novel stator 20 structure and the novel rotor 10 structure are designed, the rotor 10 is suspended and driven to rotate through the suspension coil 213 and the driving coil 214 on the stator 20, the suspension structure is simple, the structure of the magnetic suspension motor 1 is greatly simplified, and therefore the compact structure and the light weight of the magnetic suspension motor 1 are achieved.
In the present embodiment, the second core 211 has a magnetic conductive protrusion 212, and the magnetic conductive protrusion 212 extends toward the inside in the radial direction of the stator 20; the first iron core 101 and the magnetic conduction bulge 212 are oppositely arranged at intervals. As shown in fig. 7, the magnetic induction lines on the second core 211 are concentrated at the magnetic conductive protrusions 212, so as to form a closed magnetic field with the magnetic field of the rotor 10, which is helpful for improving the levitation stability of the rotor 10. Of course, due to the presence of the magnetically permeable protrusions 212, the position of the rotor 10 in the axial direction relative to the inside of the stator 20 is also determined.
The magnetic conductive protrusion 212 is preferably disposed at one end of the second core 211, in which case the second core 211 is substantially L-shaped, and the levitation coil 213 is disposed adjacent to the magnetic conductive protrusion 212, so as to ensure that the magnetic induction lines generated by the levitation coil 213 are concentrated at the magnetic conductive protrusion 212 as much as possible.
In order to further improve the suspension stability of the rotor 10 in the axial manner, the stator 20 further includes a second permanent magnet ring 220, wherein the second permanent magnet ring 220 extends along the circumferential direction of the rotor 10, the rotor 10 is disposed in the second permanent magnet ring 220 at intervals, the outer circumferential diameter of the rotor 10 is smaller than the inner circumferential diameter of the stator 20, that is, a certain gap is formed between the outer end surface of the first iron core 101 and the inner end surface of the magnetic conduction protrusion 212, the magnetization direction of the second permanent magnet ring 220 is axial magnetization, and the magnetization direction of the second permanent magnet ring 220 is opposite to the magnetization direction of the first permanent magnet ring 102; the second permanent magnet ring 220 is fixed at one end of the second iron core 211, and the second permanent magnet ring 220 is located at one side of the magnetic conductive protrusion 212, which faces away from the levitation coil 213, so that the magnetic induction lines of the second permanent magnet ring 220 are also concentrated at the magnetic conductive protrusion 212 of the second iron core 211, thereby forming a closed magnetic field with the magnetic field of the rotor 10. It can be understood that due to the existence of the second permanent magnet ring 220, the magnetic field of the rotor 10 subjected to excitation and levitation is enhanced, the axial levitation stability of the rotor 10 is improved, and the magnetic field of the second permanent magnet ring 220 can generate a magnetic resistance force for inhibiting the rotor 10 from moving in the axial direction, so that the first iron core 101 of the rotor 10 can be opposite to the magnetic conductive protrusion 212. The second permanent magnet ring 220 is made of a permanent magnet material with high magnetic flux density, such as ndfeb permanent magnet, permanent ferrite, or iron-chromium-cobalt permanent magnet alloy
In this embodiment, in order to ensure that the rotor 10 has a certain axial movement space during the axial suspension process relative to the stator 20, the suspension coil 213 and the magnetic conductive protrusion 212 are disposed at an interval, so that the rotor 10 can allow a proper axial displacement during the axial suspension process. Of course, in other embodiments, no gap may be reserved between the suspension coil 213 and the magnetic conductive protrusion 212, but the suspension coil 213 and the magnetic conductive protrusion 212 abut together.
Further, the stator 20 further includes a magnetic fixing seat 230, one end of the second core 211 is fixed to the magnetic fixing seat 230, and the plurality of coil windings 210 and the magnetic fixing seat 230 enclose to form an accommodating space for accommodating the rotor 10 to rotate. The magnetic conductive fixing seat 230 is used for fixing the second iron core 211, so that the plurality of coil windings 210 of the stator 20 are fixed at the magnetic conductive fixing seat 230, and the structure of the stator 20 is stable; on the other hand, the magnetic conductive fixing base 230 and the second iron core 211 are in contact with each other, and the magnetic field lines formed on the coil winding 210 can be transmitted in the magnetic conductive fixing base 230 through the second iron core 211, thereby improving the magnetic energy utilization rate.
The second iron core 211 and the magnetic conductive fixing seat 230 are fixed in various manners, one end of the second iron core 211 is provided with a magnetic conductive protrusion 212, and the other end of the second iron core 211 can be directly connected with the magnetic conductive fixing seat 230 in an inserting and fixing manner or a welding and fixing manner, which is not limited specifically here. As shown in fig. 8, the second core 211 and the magnetic conductive fixing base 230 are fixed by inserting, so as to facilitate the assembly of the stator 20.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A magnetically levitated motor, comprising:
the rotor comprises a first permanent magnet ring and a plurality of first iron cores extending outwards along the radial direction of the first permanent magnet ring, and the first iron cores are distributed along the circumferential direction of the first permanent magnet ring;
a stator, the rotor rotatably disposed within the stator, the stator comprising:
the coil windings are distributed at intervals along the circumferential direction of the rotor and comprise a second iron core, a suspension coil and a driving coil, the second iron core extends axially, the suspension coil and the driving coil are wound on the second iron core and are sequentially arranged axially, the suspension coil is used for suspending the rotor in the stator, and the driving coil is used for driving the rotor to rotate; and
and the sensor is connected with the suspension coil and used for controlling the radial suspension gap of the rotor.
2. The magnetic levitation motor as claimed in claim 1, wherein the second core has a magnetically conductive protrusion extending radially inward of the stator;
the first iron core and the magnetic conduction bulge are arranged at an opposite interval.
3. The magnetic levitation motor of claim 2, wherein the magnetically conductive protrusion is located at one end of the second core, and the levitation coil is disposed adjacent to the magnetically conductive protrusion.
4. The magnetic levitation motor of claim 3, wherein the first core is disposed at one end of the first permanent magnet ring, and the other end of the first permanent magnet ring is disposed opposite to the stator.
5. The magnetic levitation motor as claimed in claim 3, wherein the stator further comprises a second permanent magnet ring extending along a circumferential direction of the rotor, the rotor is disposed at intervals in the second permanent magnet ring, the second permanent magnet ring is fixed at one end of the second core, and the second permanent magnet ring is located on a side of the magnetic conductive protrusion facing away from the levitation coil.
6. The magnetic levitation motor as recited in claim 5, wherein the levitation coil and the magnetically conductive protrusion are spaced apart.
7. The magnetic levitation motor of claim 1, wherein the first cores are at least four in number; the number of the coil windings is at least four groups.
8. The magnetic levitation motor of claim 7, wherein the number of the first cores is four, and the number of the coil windings is six.
9. The magnetic levitation motor as claimed in claim 1, wherein the stator further comprises a magnetically conductive fixing base, one end of the second core is fixed to the magnetically conductive fixing base, and the plurality of coil windings and the magnetically conductive fixing base enclose a receiving space for receiving the rotor to rotate.
10. Magnetic levitation motor as claimed in any one of claims 1 to 9, wherein the levitation coil and the drive coil are spaced apart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110232203.3A CN112865609A (en) | 2021-03-02 | 2021-03-02 | Magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110232203.3A CN112865609A (en) | 2021-03-02 | 2021-03-02 | Magnetic suspension motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112865609A true CN112865609A (en) | 2021-05-28 |
Family
ID=75991094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110232203.3A Withdrawn CN112865609A (en) | 2021-03-02 | 2021-03-02 | Magnetic suspension motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112865609A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833755A (en) * | 2021-09-02 | 2021-12-24 | 中国科学院深圳先进技术研究院 | Magnetic suspension bearing |
| CN116014953A (en) * | 2023-03-23 | 2023-04-25 | 江苏明磁动力科技有限公司 | Magnetic suspension motor with sealing structure |
| CN117498721A (en) * | 2023-11-01 | 2024-02-02 | 重庆凯磁医疗技术有限公司 | Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer |
| CN118514872A (en) * | 2024-07-19 | 2024-08-20 | 沈阳微控飞轮技术股份有限公司 | Satellite transmitting device |
-
2021
- 2021-03-02 CN CN202110232203.3A patent/CN112865609A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833755A (en) * | 2021-09-02 | 2021-12-24 | 中国科学院深圳先进技术研究院 | Magnetic suspension bearing |
| CN113833755B (en) * | 2021-09-02 | 2023-08-15 | 中国科学院深圳先进技术研究院 | Magnetic suspension bearing |
| CN116014953A (en) * | 2023-03-23 | 2023-04-25 | 江苏明磁动力科技有限公司 | Magnetic suspension motor with sealing structure |
| CN116014953B (en) * | 2023-03-23 | 2023-06-02 | 江苏明磁动力科技有限公司 | Magnetic suspension motor with sealing structure |
| CN117498721A (en) * | 2023-11-01 | 2024-02-02 | 重庆凯磁医疗技术有限公司 | Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer |
| CN117498721B (en) * | 2023-11-01 | 2024-06-28 | 重庆凯磁医疗技术有限公司 | Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer |
| CN118514872A (en) * | 2024-07-19 | 2024-08-20 | 沈阳微控飞轮技术股份有限公司 | Satellite transmitting device |
| CN118514872B (en) * | 2024-07-19 | 2024-10-11 | 沈阳微控飞轮技术股份有限公司 | Satellite transmitting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112865609A (en) | Magnetic suspension motor | |
| CN112953309A (en) | Permanent magnet synchronous magnetic suspension motor | |
| JP3121819B2 (en) | Magnetic bearing device with permanent magnet that receives radial force applied to the shaft | |
| CN108591257B (en) | Permanent magnet biased axial magnetic suspension bearing with radial passive suspension force | |
| JP2008537872A (en) | Method for stabilizing a magnetically levitated object | |
| US11754076B2 (en) | Magnetic coupling suspension pump | |
| CN116398538A (en) | Permanent magnet biased radial magnetic suspension bearing and magnetic suspension rotary machine | |
| CN112865421A (en) | Five-degree-of-freedom single-winding bearingless magnetic suspension motor | |
| CN110131313B (en) | Magnetic bearing | |
| US8110955B2 (en) | Magnetic bearing device of a rotor shaft against a stator with rotor disc elements, which engage inside one another, and stator disc elements | |
| CN114499280A (en) | Magnetic suspension motor | |
| EP4086470B1 (en) | Magnetic suspension bearing, compressor, and air conditioner | |
| CN211574040U (en) | Radial non-coupling three-degree-of-freedom direct-current hybrid magnetic bearing | |
| CN111173838B (en) | Radial uncoupled three-degree-of-freedom direct current hybrid magnetic bearing | |
| CN111043156B (en) | Novel structure crossed tooth quadrupole hybrid magnetic bearing | |
| CN215528895U (en) | Magnetic suspension motor | |
| CN112671158A (en) | Hybrid magnetic suspension bearing, motor and air conditioner | |
| CN109681525B (en) | Magnetic suspension bearing and motor | |
| CN214591212U (en) | Permanent magnet synchronous magnetic suspension motor | |
| CN211550276U (en) | Magnetic suspension bearing, compressor and air conditioner | |
| CN213575188U (en) | Permanent magnet bias type magnetic suspension bearing and motor | |
| CN112983988B (en) | Composite magnetic suspension bearing and magnetic suspension bearing system | |
| CN102297202B (en) | Single shaft controlled type five-degrees-of-freedom (DOF) miniature magnetic bearing | |
| CN112152363B (en) | Single-stator excitation disc type full-freedom-degree bearingless motor and control method thereof | |
| CN211574038U (en) | Radial non-coupling quadrupole hybrid magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210528 |
|
| WW01 | Invention patent application withdrawn after publication |