CN111425523A - Hybrid radial permanent magnet biased magnetic bearing - Google Patents
Hybrid radial permanent magnet biased magnetic bearing Download PDFInfo
- Publication number
- CN111425523A CN111425523A CN202010129151.2A CN202010129151A CN111425523A CN 111425523 A CN111425523 A CN 111425523A CN 202010129151 A CN202010129151 A CN 202010129151A CN 111425523 A CN111425523 A CN 111425523A
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- Prior art keywords
- permanent magnet
- electromagnetic control
- magnetic poles
- pole
- control magnetic
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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
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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
- F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
- F16C32/0412—Passive magnetic bearings with permanent magnets on one part attracting the other part for radial load mainly
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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
- F16C32/047—Details of housings; Mounting of active magnetic bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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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- 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 discloses a hybrid radial permanent magnet biased magnetic bearing, which comprises a stator core, a rotor, a rotating shaft, a permanent magnet and an electromagnetic control coil, wherein the rotor core is arranged on the stator core; the stator iron core comprises eight electromagnetic control magnetic poles and two permanent magnet bias magnetic poles; the permanent magnet is adhered to the positions of the pole shoes of the two permanent magnet bias magnetic poles; each electromagnetic control magnetic pole is provided with an electromagnetic control coil, and the two electromagnetic control coils in each group are connected in series. The invention belongs to a mixed magnetic suspension bearing with heteropolarity and permanent magnet bias, which adopts a stator core of a traditional eight-pole motor as a main structure of the bearing, adds two-pole permanent magnet bias magnetic poles on the upper side, provides permanent magnet bias force by the permanent magnet bias magnetic poles, can improve the static bearing capacity of the bearing, reduce loss, improve the utilization rate of a stator core magnetic circuit and the maximum bearing capacity of the bearing, thereby reducing the volume of a magnetic bearing, and being suitable for non-contact support of high-speed rotating systems such as a high-speed motor, a flywheel system, a centrifuge and the like.
Description
Technical Field
The invention belongs to the field of electrical and mechanical transmission equipment, and particularly relates to a hybrid radial permanent magnet biased magnetic bearing.
Background
The magnetic suspension bearing is a novel bearing which uses magnetic field force as supporting force to suspend a rotor in a space, has the characteristics of no contact, no lubrication, no abrasion and the like, and can be used in special environments such as high speed, vacuum, ultra-clean and the like in vacuum technology, clean rooms, sterile workshops and the like.
Because the traditional active magnetic bearing has the defects of small bearing capacity and large bias current for keeping the rotor suspended during operation, the permanent magnet is added in the active magnetic bearing to reduce the bias current of the electromagnet by utilizing the inherent magnetic force characteristic of the permanent magnet material. Because the permanent magnet has strong magnetic field and better magnetic performance, the permanent magnet is used for replacing an electromagnet, so that the volume of the magnetic bearing can be reduced. However, the traditional hybrid magnetic bearing mostly adopts the combination of a heteropolar active bearing and a homopolar permanent magnet bearing, and the magnetic circuit design is complex. The increase in structural complexity now increases the system volume.
Disclosure of Invention
The invention aims to solve the problems of large power consumption, low magnetic circuit utilization rate and the like when an active radial active magnetic bearing is used independently and the problems of large volume, complex structure and the like of the traditional hybrid magnetic bearing, and provides an improved structure of a heteropolarity hybrid magnetic bearing, namely a hybrid radial permanent magnet bias magnetic bearing, wherein a stator core of a traditional eight-pole motor is used as a bearing main body structure, two-pole permanent magnet bias magnetic poles are added on the upper side, and the permanent magnet bias magnetic poles provide permanent magnet bias force, so that the static bearing capacity of the bearing can be improved, the loss is reduced, and the stator core magnetic circuit utilization rate and the maximum bearing capacity of the bearing are improved, thereby reducing the volume of the magnetic; by adopting the structure, the processing technology can be simplified, the manufacturing cost can be reduced, and the working performance of the magnetic bearing can be improved.
The purpose of the invention is realized by the following technical scheme.
The invention relates to a hybrid radial permanent magnet biased magnetic bearing, which comprises a stator core, a rotor, a rotating shaft, a permanent magnet and an electromagnetic control coil; the rotating shaft, the rotor and the stator iron core are sequentially arranged from inside to outside along a coaxial line, the rotor and the rotating shaft are fixedly arranged, and an air gap is reserved between the rotor and the stator iron core;
eight electromagnetic control magnetic poles protruding in the radial direction are arranged in the inner circle of the stator core and are divided into four groups, namely an upper group, a lower group and a left group, each group comprises two electromagnetic control magnetic poles, the eight electromagnetic control magnetic poles are symmetrical left and right relative to a diameter line in the Y-axis direction, and the eight electromagnetic control magnetic poles are symmetrical up and down relative to a diameter line in the X-axis direction; permanent magnet bias magnetic poles are arranged between the upper electromagnetic control magnetic pole and the left electromagnetic control magnetic pole and between the upper electromagnetic control magnetic pole and the right electromagnetic control magnetic pole, and the two permanent magnet bias magnetic poles are symmetrical left and right about the diameter line in the Y-axis direction;
the permanent magnets are respectively adhered to the positions of the pole shoes of the two permanent magnet bias magnetic poles; each electromagnetic control magnetic pole is provided with an electromagnetic control coil, two electromagnetic control coils on each electromagnetic control magnetic pole are connected in series, and the winding directions of the eight electromagnetic control coils are symmetrical left and right about a Y-axis direction diameter line and symmetrical up and down about an X-axis direction diameter line.
The width and the length of the eight electromagnetic control magnetic poles are completely the same, the included angle between the two electromagnetic control magnetic poles at the upper part and the diameter line in the Y-axis direction is smaller than the included angle between the two electromagnetic control magnetic poles at the left side and the diameter line in the X-axis direction, and the included angle between the two electromagnetic control magnetic poles at the upper part and the diameter line in the Y-axis direction is smaller than the included angle between the two electromagnetic control magnetic poles at the right side and the diameter line in the X; the width of the permanent magnet bias magnetic pole is smaller than that of the electromagnetic control magnetic pole, and the length of the permanent magnet bias magnetic pole is the same as that of the electromagnetic control magnetic pole.
The permanent magnet is of a tile structure, the radian of the contact position of the permanent magnet and the permanent magnet biased magnetic pole is fitted, and the width of the permanent magnet is larger than that of the permanent magnet biased magnetic pole and is the same as the thickness of a pole shoe of the electromagnetic control magnetic pole; the permanent magnet and the stator core have the same axial length and the axial edges are flush with each other; the magnetizing angles of the permanent magnets are bilaterally symmetrical about the diameter line in the Y-axis direction, the permanent magnets are all magnetized in the radial direction, the magnetizing directions are opposite in the radial direction, the S pole of the permanent magnet on the left side faces the rotor, and the N pole of the permanent magnet on the right side faces the rotor.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the permanent magnet bias magnetic circuit is constructed, and the permanent magnet bias magnetic pole is added on the premise of not influencing the magnetic resistance of the electromagnetic control magnetic circuit. Under the condition of generating the same suspension force, the structure greatly reduces the space size of the magnetic bearing, so that the whole bearing has smaller volume and lighter weight.
(2) The invention reduces the included angle between the upper electromagnetic control magnetic pole and the Y axis, thereby improving the resultant force of the electromagnetic attraction. When the same current is introduced, larger electromagnetic force can be provided, the dynamic response performance of the magnetic bearing is better, and the stable control of the magnetic bearing when the load is dynamically disturbed is facilitated.
(3) The invention adopts two permanent magnets which are magnetized in the radial direction and are added on the upper side to provide a static bias magnetic field, and provides static suspension force for the magnetic bearing.
(4) The permanent magnet bias magnet added in the invention is formed by laminating silicon steel sheets, can reduce the eddy current loss of the stator, and has simple manufacturing process and low cost.
(5) The permanent magnets added in the invention improve the radial magnetic density of the air gap and increase the maximum bearing capacity of the magnetic bearing. The resultant force of the permanent magnets to the rotor is vertically upward for offsetting the gravity of the rotor, thereby eliminating the bias current provided for overcoming the dead weight of the rotor and greatly reducing the current loss.
(6) The invention optimizes the tooth space structure, and the permanent magnet biased magnetic pole is narrower, so that more space is provided for accommodating the current coil winding. Meanwhile, the permanent magnet is slightly wider than the permanent magnet biased magnetic pole, so that a coil winding is convenient to fix, the sectional area of air gap magnetic flux is increased, and the electromagnetic force is further increased.
Drawings
FIG. 1 is a front view of the structure of a hybrid radial permanent magnet biased magnetic bearing of the present invention;
fig. 2 is a schematic diagram of the current direction and magnetic force lines of the current-controlling coil according to the present invention.
Reference numerals: 1-stator core, 2-rotor, 3-rotating shaft, 4-air gap, 5-permanent magnet, 6-electromagnetic control coil, 7-permanent magnet bias magnetic flux and 8-electromagnetic control magnetic flux.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the hybrid radial permanent magnet biased magnetic bearing of the present invention includes a stator core 1, a rotor 2, a rotating shaft 3, a permanent magnet 5, and an electromagnetic control coil 6. The rotating shaft 3, the rotor 2 and the stator core 1 are sequentially arranged from inside to outside along a coaxial line, the rotor 2 and the rotating shaft 3 are fixedly arranged, and an air gap 4 is reserved between the rotor 2 and the stator core 1. The stator core 1 is formed by laminating silicon steel sheets, the rotor 2 is sleeved on the rotating shaft 3 and is placed in a stator core cavity formed by laminating the silicon steel sheets together, and the axial length of the rotor 2 is equal to and parallel to that of the stator core 1.
Eight electromagnetic control magnetic poles protruding in the radial direction are arranged in the inner circle of the stator core 1 and are divided into four groups, namely an upper group, a lower group and a left group, each group comprises two electromagnetic control magnetic poles, the eight electromagnetic control magnetic poles are symmetrical left and right about a diameter line in the Y-axis direction, and the eight electromagnetic control magnetic poles are symmetrical up and down about a diameter line in the X-axis direction. Eight the width and the length of electromagnetic control magnetic pole are the same completely, and the contained angle between two electromagnetic control magnetic poles on upper portion and the Y axle direction diameter line is less than the contained angle between two electromagnetic control magnetic poles on left side and the X axle direction diameter line, and the contained angle between two electromagnetic control magnetic poles on upper portion and the Y axle direction diameter line is less than the contained angle between two electromagnetic control magnetic poles on right side and the X axle direction diameter line.
And permanent magnet bias magnetic poles protruding in the radial direction are arranged between the upper electromagnetic control magnetic pole and the left and right electromagnetic control magnetic poles, and the two permanent magnet bias magnetic poles are symmetrical left and right about a diameter line in the Y-axis direction. The width of the two permanent magnet bias magnetic poles is smaller than that of the electromagnetic control magnetic pole, and the length of the permanent magnet bias magnetic pole is the same as that of the electromagnetic control magnetic pole.
The permanent magnets 5 are respectively adhered to the positions of the two permanent magnet bias magnetic pole shoes, the magnetizing angles of the two permanent magnets 5 are bilaterally symmetrical about the diameter line in the Y-axis direction, the magnetizing angles are radial magnetizing, the magnetizing directions are opposite in radial direction, the S pole of the permanent magnet on the left side faces the rotor, and the N pole of the permanent magnet on the right side faces the rotor. The permanent magnet 5 is of a tile structure, the contact part of the permanent magnet 5 and the permanent magnet biased magnetic pole is tightly attached, the radian is the same, and the width of the permanent magnet 5 is slightly larger than that of the permanent magnet biased magnetic pole and is the same as the thickness of a pole shoe of an electromagnetic control magnetic pole. Permanent magnet 5 adopts rare earth neodymium iron boron to make, and is equal and axial edge is parallel and level each other with 1 axial length of stator core, leaves air gap 4 with rotor 2 within a definite time.
Each electromagnetic control magnetic pole is provided with an electromagnetic control coil 6, two electromagnetic control coils 6 on each electromagnetic control magnetic pole are connected in series and have no electrical connection relation with the electromagnetic control coils 6 on other parts; the winding directions of the eight electromagnetic control coils 6 are bilaterally symmetrical with respect to the diameter line in the Y-axis direction, and are vertically symmetrical with respect to the diameter line in the X-axis direction.
The direction of energization of the solenoid control coil 6 is as shown in fig. 2: in the figure, "O" is out of the vertical plane of the paper and "X" is in the vertical plane of the paper. Take the magnetic lines of force generated by the upper electromagnetic control magnetic pole and the two permanent magnets 5 as an example: the current direction of the electromagnetic control coil 6 wound by the upper left electromagnetic control magnetic pole is that the left side flows out of the paper surface, and the right magnetic pole flows into the paper surface. The electromagnetic control flux 8 thus generated is directed radially upward, corresponding to the magnetic pole facing the rotor being the S pole. Similarly, the direction of the electromagnetic control magnetic flux 8 generated by the upper right electromagnetic control magnetic pole is downward along the radial direction, which is equivalent to that the magnetic pole facing the rotor side is an N pole. At this time, the electromagnetic control magnetic fluxes 8 of the two upper electromagnetic control magnetic poles are closed clockwise, that is, the electromagnetic control magnetic fluxes 8 form a closed loop along the upper left electromagnetic control magnetic pole, the upper magnetic yoke, the upper right electromagnetic control magnetic pole, the air gap 4 and the rotor 2 in the stator core 1. For two additional permanent magnet biased magnetic poles, the left permanent magnet is in the direction of S pole towards the rotor, and the right permanent magnet is in the direction of N pole towards the rotor. The magnetic force lines generated by the two permanent magnets 5 have the following paths: and the permanent magnet biased magnetic pole on the left side is upward in the radial direction, rightwards through the upper magnetic yoke, and downward in the radial direction, and the inside of the rotor 2 is leftwards through the air gap 4 and returns to the permanent magnet on the left side to form a closed loop. The permanent magnet bias flux 7 and the electromagnetic control flux 8 are in contact with the rotor surface at the air gap, creating an electromagnetic force perpendicular to the rotor surface. The electromagnetic force is symmetrical left and right, the magnitude is equal, and the generated resultant force is the positive direction of the Y axis. In the same way, the resultant force generated by the two electromagnetic control magnetic poles at the lower part is in the Y-axis negative direction, the resultant force generated by the two electromagnetic control magnetic poles at the left side is in the X-axis negative direction, and the resultant force generated by the two electromagnetic control magnetic poles at the right side is in the X-axis positive direction. The current in the corresponding electromagnetic control coil 6 is controlled to be convenient to control the electromagnetic attraction in the corresponding direction, so that the external disturbance is overcome, and the stable suspension of the rotor 2 at the set position is maintained.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.
Claims (3)
1. A hybrid radial permanent magnet biased magnetic bearing is characterized by comprising a stator core (1), a rotor (2), a rotating shaft (3), a permanent magnet (5) and an electromagnetic control coil (6); the rotating shaft (3), the rotor (2) and the stator core (1) are sequentially arranged from inside to outside along a coaxial line, the rotor (2) and the rotating shaft (3) are fixedly arranged, and an air gap (4) is reserved between the rotor (2) and the stator core (1);
eight electromagnetic control magnetic poles protruding in the radial direction are arranged in the inner circle of the stator iron core (1) and are divided into four groups, namely an upper group, a lower group and a left group, each group comprises two electromagnetic control magnetic poles, the eight electromagnetic control magnetic poles are symmetrical left and right relative to a diameter line in the Y-axis direction, and the eight electromagnetic control magnetic poles are symmetrical up and down relative to a diameter line in the X-axis direction; permanent magnet bias magnetic poles are arranged between the upper electromagnetic control magnetic pole and the left electromagnetic control magnetic pole and between the upper electromagnetic control magnetic pole and the right electromagnetic control magnetic pole, and the two permanent magnet bias magnetic poles are symmetrical left and right about the diameter line in the Y-axis direction;
the permanent magnets (5) are respectively stuck to the positions of the pole shoes of the two permanent magnet bias magnetic poles; each electromagnetic control magnetic pole is provided with an electromagnetic control coil (6), two electromagnetic control coils (6) on each group of electromagnetic control magnetic poles are connected in series, and the winding directions of the eight electromagnetic control coils (6) are symmetrical left and right about a diameter line in the Y-axis direction and are symmetrical up and down about a diameter line in the X-axis direction.
2. The hybrid radial permanent magnet biased magnetic bearing of claim 1, wherein the eight electromagnetic control magnetic poles are identical in width and length, an included angle between the two upper electromagnetic control magnetic poles and a Y-axis direction diameter line is smaller than an included angle between the two left electromagnetic control magnetic poles and an X-axis direction diameter line, and an included angle between the two upper electromagnetic control magnetic poles and a Y-axis direction diameter line is smaller than an included angle between the two right electromagnetic control magnetic poles and an X-axis direction diameter line; the width of the permanent magnet bias magnetic pole is smaller than that of the electromagnetic control magnetic pole, and the length of the permanent magnet bias magnetic pole is the same as that of the electromagnetic control magnetic pole.
3. The hybrid radial permanent magnet biased magnetic bearing according to claim 1, wherein the permanent magnet (5) is of a tile structure, the radian of the contact position of the permanent magnet (5) and the permanent magnet biased magnetic pole is fitted, the width of the permanent magnet (5) is larger than that of the permanent magnet biased magnetic pole and is the same as the thickness of a pole shoe of an electromagnetic control magnetic pole; the permanent magnet (5) and the stator core (1) are equal in axial length and flush with each other at the axial edges; the magnetizing angles of the permanent magnets (5) are bilaterally symmetrical about the diameter line in the Y-axis direction, the magnetizing angles are radial magnetizing, the magnetizing directions are opposite in radial direction, the S pole of the permanent magnet on the left side faces the rotor, and the N pole of the permanent magnet on the right side faces the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010129151.2A CN111425523A (en) | 2020-02-28 | 2020-02-28 | Hybrid radial permanent magnet biased magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010129151.2A CN111425523A (en) | 2020-02-28 | 2020-02-28 | Hybrid radial permanent magnet biased magnetic bearing |
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| CN111425523A true CN111425523A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010129151.2A Pending CN111425523A (en) | 2020-02-28 | 2020-02-28 | Hybrid radial permanent magnet biased magnetic bearing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115076234A (en) * | 2022-07-21 | 2022-09-20 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
| CN115111265A (en) * | 2022-07-21 | 2022-09-27 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
| WO2022222478A1 (en) * | 2021-04-22 | 2022-10-27 | 东南大学 | Stator permanent magnet motor magnetic bearing having magnetic pole bypasses, and biasing force adjusting method therefor |
| CN116241564A (en) * | 2022-12-08 | 2023-06-09 | 淮阴工学院 | Octopole heteropolar DC hybrid magnetic bearing |
| US11909297B2 (en) | 2021-04-22 | 2024-02-20 | Southeast University | Force-balancing magnetic bearing with adjustable bias magnetic field for stator permanent magnet motor |
| EP4203245A4 (en) * | 2020-08-20 | 2024-02-21 | Gree Electric Appliances, Inc. of Zhuhai | Stator core, magnetic suspension bearing, and motor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030001447A1 (en) * | 1999-12-27 | 2003-01-02 | Siegfried Silber | Magnetic bearing system |
| JP2005061578A (en) * | 2003-08-19 | 2005-03-10 | Iwaki Co Ltd | Magnetic bearing |
| CN101922511A (en) * | 2010-08-25 | 2010-12-22 | 江苏大学 | Permanent-magnet bias outer rotor radial AC hybrid magnetic bearing |
| CN102155492A (en) * | 2011-05-18 | 2011-08-17 | 哈尔滨工业大学 | Mixed type driving and driven magnetic suspension bearing |
| JP5074350B2 (en) * | 2008-10-29 | 2012-11-14 | 公益財団法人大分県産業創造機構 | Magnetic bearing |
| CN106438693A (en) * | 2016-11-07 | 2017-02-22 | 江苏大学 | Two-freedom-degree permanent magnet biased radial hybrid magnetic bearing |
| CN106981966A (en) * | 2017-05-19 | 2017-07-25 | 北京航空航天大学 | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator |
| EP2587636B1 (en) * | 2011-10-27 | 2019-01-16 | Linz Center Of Mechatronics Gmbh | Electrical machine, in particular brushless torque motor |
| CN208456857U (en) * | 2018-07-11 | 2019-02-01 | 井冈山大学 | A kind of bearing of permanent magnetism and electromagnetic direct-drive screw compressor |
| CN209892624U (en) * | 2019-04-22 | 2020-01-03 | 南京埃克锐特机电科技有限公司 | Electromagnetic radial magnetic bearing with E-shaped structure |
-
2020
- 2020-02-28 CN CN202010129151.2A patent/CN111425523A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030001447A1 (en) * | 1999-12-27 | 2003-01-02 | Siegfried Silber | Magnetic bearing system |
| JP2005061578A (en) * | 2003-08-19 | 2005-03-10 | Iwaki Co Ltd | Magnetic bearing |
| JP5074350B2 (en) * | 2008-10-29 | 2012-11-14 | 公益財団法人大分県産業創造機構 | Magnetic bearing |
| CN101922511A (en) * | 2010-08-25 | 2010-12-22 | 江苏大学 | Permanent-magnet bias outer rotor radial AC hybrid magnetic bearing |
| CN102155492A (en) * | 2011-05-18 | 2011-08-17 | 哈尔滨工业大学 | Mixed type driving and driven magnetic suspension bearing |
| EP2587636B1 (en) * | 2011-10-27 | 2019-01-16 | Linz Center Of Mechatronics Gmbh | Electrical machine, in particular brushless torque motor |
| CN106438693A (en) * | 2016-11-07 | 2017-02-22 | 江苏大学 | Two-freedom-degree permanent magnet biased radial hybrid magnetic bearing |
| CN106981966A (en) * | 2017-05-19 | 2017-07-25 | 北京航空航天大学 | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator |
| CN208456857U (en) * | 2018-07-11 | 2019-02-01 | 井冈山大学 | A kind of bearing of permanent magnetism and electromagnetic direct-drive screw compressor |
| CN209892624U (en) * | 2019-04-22 | 2020-01-03 | 南京埃克锐特机电科技有限公司 | Electromagnetic radial magnetic bearing with E-shaped structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4203245A4 (en) * | 2020-08-20 | 2024-02-21 | Gree Electric Appliances, Inc. of Zhuhai | Stator core, magnetic suspension bearing, and motor |
| WO2022222478A1 (en) * | 2021-04-22 | 2022-10-27 | 东南大学 | Stator permanent magnet motor magnetic bearing having magnetic pole bypasses, and biasing force adjusting method therefor |
| US11536315B2 (en) | 2021-04-22 | 2022-12-27 | Southeast University | Magnetic bearing of stator permanent magnet motor with magnetic pole bypasses and bias force adjusting method thereof |
| US11909297B2 (en) | 2021-04-22 | 2024-02-20 | Southeast University | Force-balancing magnetic bearing with adjustable bias magnetic field for stator permanent magnet motor |
| CN115076234A (en) * | 2022-07-21 | 2022-09-20 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
| CN115111265A (en) * | 2022-07-21 | 2022-09-27 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
| CN116241564A (en) * | 2022-12-08 | 2023-06-09 | 淮阴工学院 | Octopole heteropolar DC hybrid magnetic bearing |
| CN116241564B (en) * | 2022-12-08 | 2024-01-23 | 淮阴工学院 | Octopole heteropolar DC hybrid magnetic bearing |
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Application publication date: 20200717 |
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