CN214534059U - Disc stator type AC/DC hybrid magnetic bearing - Google Patents
Disc stator type AC/DC hybrid magnetic bearing Download PDFInfo
- Publication number
- CN214534059U CN214534059U CN202120098868.5U CN202120098868U CN214534059U CN 214534059 U CN214534059 U CN 214534059U CN 202120098868 U CN202120098868 U CN 202120098868U CN 214534059 U CN214534059 U CN 214534059U
- Authority
- CN
- China
- Prior art keywords
- stator
- winding
- core
- stator core
- windings
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 83
- 239000000725 suspension Substances 0.000 claims abstract description 25
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 26
- 230000003068 static effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005339 levitation Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Abstract
The utility model discloses a disc stator type AC/DC hybrid magnetic bearing, which comprises a stator and a rotor, wherein the stator comprises a left stator core, a right stator core and a permanent magnet; the stator core is of a disc-shaped structure, n stator inner grooves are formed in the disc-shaped stator core, and a pair of windings R are respectively placed in the n stator inner groovesl1~Rl2nWinding Rr1~Rr2n(ii) a The rotor comprises a double-disc annular rotor core and a rotating shaft, the double-disc annular rotor core is opposite to the left stator core and the right stator core in position and forms a working air gap with the stator cores, and a magnetic isolation air gap for connecting the stator inner grooves with the working air gap is arranged at the axis position of each stator inner groove. The utility model provides bias magnetic flux by the permanent magnetic ringThe stator inner groove winding is electrified to provide control magnetic flux, and the control magnetic flux and the stator inner groove winding interact to generate suspension force; the hybrid magnetic bearing with the structure can design the effective area between the stator and the rotor to be maximum, and increases the radial bearing capacity and the suspension force density.
Description
Technical Field
The utility model relates to a non-mechanical contact magnetic bearing, in particular to a disc stator type AC/DC hybrid magnetic bearing which is suitable for the precise control of a high-speed rotor magnetic suspension supporting system.
Background
The magnetic bearing is a novel high-performance bearing which suspends a rotor in a space by utilizing electromagnetic force between a stator and the rotor so that the stator and the rotor are not in mechanical contact. Currently, magnetic bearings are classified into the following three types according to the manner in which magnetic force is provided: (1) the active magnetic bearing generates a bias magnetic field by bias current, and the control magnetic flux generated by the control current is mutually superposed with the bias magnetic flux so as to generate controllable suspension force, and the magnetic bearing has larger volume, weight and power consumption; (2) the passive magnetic bearing has the advantages that the suspension force is completely provided by the permanent magnet, the required controller is simple, the suspension power consumption is low, but the rigidity and the damping are small, and the passive magnetic bearing is generally applied to supporting an object in one direction or reducing the load acting on the traditional bearing; (3) the hybrid magnetic bearing adopts permanent magnetic materials to replace electromagnets in an active magnetic bearing to generate a bias magnetic field, and control current only provides control magnetic flux for balancing load or interference, thereby greatly reducing the power loss of the magnetic bearing, reducing the volume of the magnetic bearing, lightening the weight of the magnetic bearing and improving the bearing capacity.
The existing hybrid magnetic bearing stator core uniformly distributes a plurality of stator magnetic poles with obvious characteristics along the circumference, and a control winding is wound on the stator magnetic poles to generate control magnetic flux. The stator magnetic pole of the hybrid magnetic bearing with the structure is easy to saturate, the parameter design variable range is small, and the suspension force density and the bearing capacity are small.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a disc stator type AC/DC hybrid magnetic bearing can increase radial bearing capacity and suspension power density, compact structure, manufacturing and convenient assembling.
The technical scheme is as follows: the utility model discloses a disc stator type AC/DC hybrid magnetic bearing, which comprises a stator and a rotor, wherein the stator comprises a left stator core, a right stator core and a permanent magnet; the left stator core and the right stator core are of disc-shaped structures, n stator inner grooves are uniformly formed in the left stator core and the right stator core respectively, and a pair of windings, namely windings R, are placed in the n stator inner grooves respectivelyl1~Rl2nWinding Rr1~Rr2n(ii) a The rotor comprises a double-disc annular rotor core and a rotating shaft, and the rotating shaft penetrates through the rotorAnd the rotor core is opposite to the left stator core and the right stator core in position, and forms a working air gap with the left stator core and the right stator core.
Further, the number of the stator inner grooves is 3, the mutual difference between the three inner grooves is 120 ℃, the axis of one of the stator inner grooves is aligned with the-x axis, three-phase symmetrical windings are placed in the stator inner grooves, and the three-phase symmetrical windings are respectively windings Rl1~Rl6Winding Rr1~Rr6。
Further, the number of the stator inner grooves is 4, the difference between the four stator inner grooves is 90 degrees, and the axes of the stator inner grooves are located at 45 degrees and 135 degrees in the horizontal direction respectively; a pair of windings, respectively R, is placed in each stator slotl1~Rl8Winding Rr1~Rr8。
Further, symmetrical windings in the stator inner slots are used for levitation control, windings Rl1、Rr1Is denoted by R1A winding Rl2、Rr2Is denoted by R2A winding Rl3、Rr3Is denoted by R3A winding Rl4、Rr4Is denoted by R4A winding Rl5、Rr5Is denoted by R5A winding Rl6、Rr6Is denoted by R6Winding R of left stator core and right stator core1And winding R2Winding R3And winding R4Winding R5And winding R6Respectively located in an internal stator slot, windings R2And R3、R4And R5、R1And R6The windings at the same positions on the left side and the right side are connected in series or in parallel in an opposite direction respectively, and the radial two degrees of freedom are controlled.
Further, the windings in the stator inner groove are used for suspension control, and the windings R are used for suspension controll1、Rr1Is denoted by R1To winding Rl8、Rr8Is denoted by R8Winding R of left stator core and right stator core1And winding R8Winding R2And winding R3Winding R4And winding R5Winding R6And winding R7Stator inner groove windings R of a left stator core and a right stator core respectively positioned in a stator inner groove1And R2、R3And R4、R5And R6、R7And R8The windings at the same position on the left stator core and the right stator core are connected in series respectively, and then are connected in series or in parallel in a reverse direction, so that the radial two degrees of freedom are controlled.
Furthermore, the rotor core is in an H-shaped structure along the radial section, and the rotor core is respectively opposite to the left stator core and the right stator core.
Furthermore, a magnetic isolation air gap for connecting the stator inner groove of the left stator core and the stator inner groove of the right stator core and the working air gap is formed between the stator inner groove of the left stator core and the working air gap.
Furthermore, the working air gap is 0.5mm, and the magnetism isolating air gap is 2 mm.
Furthermore, the left stator core, the right stator core and the rotor core are made of a whole piece of magnetic conductive material, and the permanent magnet ring is made of rare earth permanent magnet material.
Has the advantages that:
1. the utility model discloses hybrid magnetic bearing stator core is the disc type, and the effective area between the rotor is decided in the increase, improves suspension power density and increase bearing capacity, and the winding is set in the stator inside groove, and mechanical strength is high, and compact structure has reduced axial length, and magnetic pole area can design to the biggest, and main parameter design space is big, has increased radial bearing capacity and suspension power density.
2. The utility model discloses set up the magnetism air gap that separates of connecting inside groove and working air gap between stator inside groove and the working air gap of left stator core, right stator core, can effectively reduce the magnetic leakage.
Drawings
FIG. 1 is an axial subdivision and suspension magnetic flux diagram of a disc stator type AC/DC hybrid magnetic bearing of the present invention;
fig. 2 is a left radial suspension magnetic flux diagram of a disc stator type ac/dc hybrid magnetic bearing according to embodiment 1 of the present invention;
fig. 3 is a right radial suspension magnetic flux diagram of embodiment 1 of a disc stator type ac/dc hybrid magnetic bearing according to the present invention;
fig. 4 is a left radial suspension magnetic flux diagram of a disc stator type ac/dc hybrid magnetic bearing according to embodiment 2 of the present invention;
fig. 5 is a right radial levitation flux diagram of embodiment 2 of the disk stator type ac/dc hybrid magnetic bearing according to the present invention.
The magnetic field generator comprises a left stator core 1, a right stator core 2, a permanent magnet ring 3, a rotor core 4, a rotating shaft 5, a working air gap 6, a static bias magnetic flux 7, a suspension control magnetic flux 8 and a magnetic isolation air gap 9.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Embodiment 1:
the utility model discloses a disc stator type AC/DC hybrid magnetic bearing, this hybrid magnetic bearing is three-phase AC hybrid magnetic bearing, including stator and rotor, the stator includes left stator core 1, right stator core 2 and a permanent-magnet ring 3, left side stator core 1, right side stator core 2 is disc type structure, at left side stator core 1, set up three stator inside groove respectively in the right stator core 2, each other difference 120 between the three stator inside groove, and one of them stator inside groove axis aligns with-x axis, put three phase symmetrical winding in three stator inside groove, be winding R respectivelyl1~Rl6Winding Rr1~Rr6. The rotor includes two annular rotor core 4 of disc and pivot 5, and rotor core 4 is run through to pivot 5, and rotor core 4 is relative with left stator core 1, 2 positions of right stator core, and forms working air gap 6 between with left stator core 1, right stator core 2.
Windings in stator slots for levitation control, winding Rl1、Rr1Is denoted by R1To winding Rl6、Rr6Is denoted by R6By analogy, the windings R of the left stator core 1 and the right stator core 21And winding R2Winding R3And winding R4Winding R5And winding R6Respectively located in an internal stator slot, windings R2And R3、R4And R5、R1And R6The windings at the same positions on the left side and the right side are connected in series or in parallel in an opposite direction respectively, and the radial two degrees of freedom are controlled.
And a magnetic isolation air gap 9 for connecting the stator inner grooves of the left stator core 1 and the right stator core 2 and the working air gap 6 is arranged between the stator inner grooves and the working air gap. The working air gap 6 is generally 0.5mm, and the value of the magnetic isolation air gap 9 is 2mm, so that the magnetic leakage can be effectively reduced.
The left stator core 1, the right stator core 2 and the rotor core 4 are made of a whole piece of magnetic conductive material, and the permanent magnet ring 3 is made of rare earth permanent magnet material.
The permanent magnet ring 3 provides a static bias magnetic flux 7, and the magnetic circuit of the static bias magnetic flux 7 is as follows: the magnetic flux starts from the N pole of the stator permanent magnet ring 3 and returns to the S pole of the permanent magnet ring 3 through the left stator iron core 1, the working air gap 6, the rotor iron core 4, the working air gap 6 and the right stator iron core 2.
Winding Rl1~Rl6、Rr1~Rr6The magnetic circuit of the suspension control magnetic flux 8 generated by electrifying is as follows: the left stator core 1, the working air gap 6, the rotor core 4 and the left stator core 1 form a closed path.
Suspension principle: the static bias magnetic flux 7 and the suspension control magnetic flux 8 interact in the radial direction, so that the air gap magnetic field superposition on the same side with the radial eccentricity direction of the rotor is weakened, the air gap magnetic field superposition in the opposite direction is strengthened, force opposite to the offset direction of the rotor is generated on the rotor, and the rotor is pulled back to the radial balance position.
Embodiment 2:
the present embodiment differs from embodiment 1 in that: the inner circumferences of the left stator core 1 and the right stator core 2 are respectively and uniformly opened4 stator inner grooves are arranged, the four stator inner grooves are mutually different by 90 degrees, and the axes of the stator inner grooves are respectively positioned at the positions of 45 degrees and 135 degrees in the horizontal direction; a pair of windings, respectively R, is placed in each stator slotl1~Rl8Winding Rr1~Rr8A pair of windings, respectively R, is placed in each stator slotl1~Rl8Winding Rr1~Rr8. See fig. 4 and 5. The hybrid magnetic bearing is a direct current hybrid magnetic bearing.
Windings in stator slots for levitation control, winding Rl1、Rr1Is denoted by R1To winding Rl8、Rr8Is denoted by R8And so on. Winding R of left stator core 1 and right stator core 21And winding R8Winding R2And winding R3Winding R4And winding R5Winding R6And winding R7Each located in a stator inner slot, see fig. 4 and 5. Stator inner groove winding R of left stator core 1 and right stator core 21And R2、R3And R4、R5And R6、R7And R8The windings are respectively connected in series, and the windings at the same position on the left stator core 1 and the right stator core 2 are reversely connected in series or in parallel to control two radial degrees of freedom. Other structures of this embodiment are the same as those of embodiment 1, and are not described in detail here.
The permanent magnet ring 3 provides a static bias magnetic flux 7, and the magnetic circuit of the static bias magnetic flux 7 is as follows: the magnetic flux starts from the N pole of the permanent magnet ring 3 and returns to the S pole of the permanent magnet ring 3 through the left stator core 1, the working air gap 6, the rotor core 4, the working air gap 6 and the right stator core 2.
Stator internal groove winding Rl1~Rl8、Rr1~Rr8The magnetic circuit of the suspension control magnetic flux 8 generated by electrifying is as follows: the left stator core 1, the working air gap 6, the rotor core 4 and the left stator core 1 form a closed path.
Suspension principle: the static bias magnetic flux 7 and the suspension control magnetic flux 8 interact in the radial direction, so that the air gap magnetic field superposition on the same side with the radial eccentricity direction of the rotor is weakened, the air gap magnetic field superposition in the opposite direction is strengthened, force opposite to the offset direction of the rotor is generated on the rotor, and the rotor is pulled back to the radial balance position.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (9)
1. A disc stator type AC/DC hybrid magnetic bearing comprises a stator and a rotor, and is characterized in that the stator comprises a left stator core (1), a right stator core (2) and a permanent magnet ring (3); the left stator core (1) and the right stator core (2) are of disc-shaped structures, n stator inner grooves are uniformly formed in the left stator core (1) and the right stator core (2) respectively, a pair of windings, namely windings R, are placed in the n stator inner grooves respectivelyl1~Rl2nWinding Rr1~Rr2n(ii) a The rotor comprises a double-disc annular rotor core (4) and a rotating shaft (5), wherein the rotating shaft (5) penetrates through the rotor core (4), the rotor core (4) is opposite to the left stator core (1) and the right stator core (2) in position, and a working air gap (6) is formed between the rotor core and the left stator core (1) and between the rotor core and the right stator core (2).
2. The disk-stator type ac/dc hybrid magnetic bearing according to claim 1, wherein the number of the stator inner slots is 3, the three inner slots are separated by 120 degrees, and one of the stator inner slot axes is aligned with the-x axis, and three-phase symmetric windings, respectively, R windings, are placed in the stator inner slotsl1~Rl6Winding Rr1~Rr6。
3. The disc stator type ac/dc hybrid magnetic bearing according to claim 1, wherein the stator inner grooveThe number of the stator internal grooves is 4, the four stator internal grooves are mutually different by 90 degrees, and the axes of the stator internal grooves are respectively positioned at 45 degrees and 135 degrees in the horizontal direction; a pair of windings, respectively R, is placed in each stator slotl1~Rl8Winding Rr1~Rr8。
4. The disk stator type ac/dc hybrid magnetic bearing according to claim 2, wherein the symmetrical windings in the stator slots are used for suspension control, winding Rl1、Rr1Is denoted by R1A winding Rl2、Rr2Is denoted by R2A winding Rl3、Rr3Is denoted by R3A winding Rl4、Rr4Is denoted by R4A winding Rl5、Rr5Is denoted by R5A winding Rl6、Rr6Is denoted by R6Winding R of left stator core (1) and right stator core (2)1And winding R2Winding R3And winding R4Winding R5And winding R6Respectively located in an internal stator slot, windings R2And R3、R4And R5、R1And R6The windings at the same positions on the left side and the right side are connected in series or in parallel in an opposite direction respectively, and the radial two degrees of freedom are controlled.
5. The disk stator type ac/dc hybrid magnetic bearing according to claim 3, wherein the windings in the stator slots are for suspension control, winding Rl1、Rr1Is denoted by R1To winding Rl8、Rr8Is denoted by R8Winding R of left stator core (1) and right stator core (2)1And winding R8Winding R2And winding R3Winding R4And winding R5Winding R6And winding R7Stator inner groove windings R of a left stator core (1) and a right stator core (2) respectively positioned in a stator inner groove1And R2、R3And R4、R5And R6、R7And R8The windings are respectively connected in series, and the windings at the same position on the left stator core (1) and the right stator core (2) are reversely connected in series or in parallel to control two radial degrees of freedom.
6. The disk stator type ac/dc hybrid magnetic bearing according to claim 1, wherein the rotor core (4) has an "H" shaped structure in radial section, which is located opposite to the left stator core (1) and the right stator core (2), respectively.
7. The disk stator type ac/dc hybrid magnetic bearing according to any one of claims 1 to 6, wherein a magnetic isolation air gap (9) is opened between the stator inner slots of the left and right stator cores (1, 2) and the working air gap (6) to connect the two.
8. The disc stator type ac/dc hybrid magnetic bearing according to claim 7, characterized in that the working air gap (6) is 0.5mm and the magnetic separation air gap (9) is 2 mm.
9. The disc stator type ac/dc hybrid magnetic bearing according to claim 1, wherein the left stator core (1), the right stator core (2), and the rotor core (4) are made of one piece of magnetically conductive material, and the permanent magnet ring (3) is made of rare earth permanent magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098868.5U CN214534059U (en) | 2021-01-14 | 2021-01-14 | Disc stator type AC/DC hybrid magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120098868.5U CN214534059U (en) | 2021-01-14 | 2021-01-14 | Disc stator type AC/DC hybrid magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214534059U true CN214534059U (en) | 2021-10-29 |
Family
ID=78302357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120098868.5U Expired - Fee Related CN214534059U (en) | 2021-01-14 | 2021-01-14 | Disc stator type AC/DC hybrid magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214534059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876955A (en) * | 2022-06-08 | 2022-08-09 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
-
2021
- 2021-01-14 CN CN202120098868.5U patent/CN214534059U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876955A (en) * | 2022-06-08 | 2022-08-09 | 珠海格力电器股份有限公司 | Magnetic suspension bearing and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101149077B (en) | Permanent-magnetic biased axial radial magnetic bearing | |
| CN104214216B (en) | A kind of four-degree-of-freedom internal rotor magnetic bearing | |
| CN106015331B (en) | A kind of low power consumption permanent magnet biased five degree of freedom integrated magnetic bearing | |
| CN105864292A (en) | Permanent magnet polarization three-degree-of-freedom magnetic bearing | |
| CN106812797B (en) | A kind of double layered stator permanent magnet offset radial magnetic bearing | |
| CN101893038A (en) | Permanent magnet biased axial magnetic bearing | |
| CN111075839A (en) | New structure radial two-degree-of-freedom hexapole alternating current/direct current hybrid magnetic bearing | |
| CN101994761A (en) | Double-permanent magnet outer-rotor permanent magnet biased radial magnetic bearing | |
| CN105673688A (en) | Self-adjustment type five-freedom-degree magnetic bearing | |
| CN103939465B (en) | A kind of Simple Freedom Magnetic Bearing | |
| CN104141685A (en) | Driving and driven inner rotor magnetic bearing | |
| CN214534059U (en) | Disc stator type AC/DC hybrid magnetic bearing | |
| CN108599500B (en) | Stator permanent magnet type outer rotor sheet bearingless asynchronous motor | |
| CN112815005B (en) | Design method of hexapole heteropolar alternating current hybrid magnetic bearing | |
| CN106787302B (en) | Bearingless permanent magnet sheet motor | |
| CN205663761U (en) | Five degrees of freedom of low -power permanent magnet biased integrate magnetic bearing | |
| CN104121288A (en) | Active and passive outer rotor magnetic bearing | |
| CN104154119A (en) | Permanent magnet biased axial-radial magnetic bearing | |
| CN112065856B (en) | Four-pole internal and external double-rotor hybrid magnetic bearing | |
| CN212564072U (en) | Non-contact hybrid magnetic bearing with internal stator and external stator | |
| CN211574037U (en) | Cross-tooth quadrupole hybrid magnetic bearing with novel structure | |
| CN206221508U (en) | A kind of two degrees of freedom permanent magnet offset radial hybrid magnetic bearing | |
| CN108825655A (en) | A kind of radial-axial Three Degree Of Freedom magnetic bearing with magnetism-isolating loop | |
| CN211574040U (en) | Radial non-coupling three-degree-of-freedom direct-current hybrid magnetic bearing | |
| CN203939869U (en) | A kind of permanent-magnetic biased axial radial magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huai'an Xinlian Information Technology Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2021980014320 Denomination of utility model: A disk stator type AC / DC hybrid magnetic bearing Granted publication date: 20211029 License type: Common License Record date: 20211213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211029 |