CN214367289U - Hexapole heteropolar alternating current hybrid magnetic bearing - Google Patents
Hexapole heteropolar alternating current hybrid magnetic bearing Download PDFInfo
- Publication number
- CN214367289U CN214367289U CN202120100151.XU CN202120100151U CN214367289U CN 214367289 U CN214367289 U CN 214367289U CN 202120100151 U CN202120100151 U CN 202120100151U CN 214367289 U CN214367289 U CN 214367289U
- Authority
- CN
- China
- Prior art keywords
- pole
- permanent magnet
- rotor
- poles
- suspension
- 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
- 239000000725 suspension Substances 0.000 claims abstract description 42
- 238000004804 winding Methods 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000007667 floating Methods 0.000 claims abstract description 7
- 238000007885 magnetic separation Methods 0.000 claims abstract description 6
- 238000005339 levitation Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 7
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 230000004907 flux Effects 0.000 description 24
- 230000006698 induction Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005347 demagnetization Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model discloses a mixed magnetic bearing of six utmost point heteropolar type alternating current. The permanent magnet motor comprises a stator and a rotor, wherein the stator comprises an outer control iron core and an inner permanent magnet stator. Two groups of suspension poles A, B, C, a, b and c are distributed on the outer control iron core along the inner circumference, the inner sides of the suspension poles a, b and c are of sector annular structures, an inner permanent magnet stator is formed by six permanent magnets and three sector annular iron cores, a magnetic separation air gap exists between the suspension pole A, B, C and the three sector annular iron cores, and a main air gap exists between the inner permanent magnet stator and the rotor. Primary air gap length giSub-magnetic air gap length goAbc, polar area SiPolar area S with ABCoSatisfies the following conditions:
the number of turns N of the winding on the floating pole A, B, C and a, b and c is controlledo、NiSatisfies the following conditions:
the windings on the control windings A-a, B-B and C-C are reversely connected in series to form one phase, and then are connected to form a Y-shaped three-phase winding, and a three-phase inverter supplies power. The utility model discloses only need a three-phase inverter just can realize that the rotor stabilizes the suspension, it is big to have a bearing capacity, and displacement rigidity is little, and magnetic field disturbance is less, and the rotor core loss is low, advantages such as the control of being convenient for.
Description
Technical Field
The utility model relates to a magnetic suspension bearing technical field, concretely relates to hexapole heteropolar alternating current hybrid magnetic bearing can be used to high-speed transmission contactless suspension supporting such as flywheel system.
Background
The magnetic suspension bearing is a novel high-performance bearing which realizes no mechanical friction between a stator and a rotor, has the advantages of no friction, long service life, high precision, low loss and the like, and is widely applied to the technical fields of life science, flywheel energy storage, aerospace and the like. The hybrid magnetic bearing may be classified into a direct current quadrupole hybrid magnetic bearing and an alternating current triode hybrid magnetic bearing according to a control current. The hexapole hybrid magnetic bearing has symmetrical structure and can be driven by a three-phase inverter, so that the hexapole hybrid magnetic bearing has the advantages of a direct-current quadrupole hybrid magnetic bearing and an alternating-current tripolar hybrid magnetic bearing. The radial hybrid magnetic bearing may be classified into a homopolar hybrid magnetic bearing and a heteropolar hybrid magnetic bearing according to a bias magnetic circuit. And the axial length of the homopolar hybrid magnetic bearing is too long, so that the critical speed of the rotor and the application of the rotor in a high-speed flywheel energy storage system are limited. In addition, the traditional heteropolar hybrid magnetic bearing has the defects of overlarge displacement rigidity, large loss of a rotor core and the like.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: to the problem that exists among the prior art, the utility model provides a mixed magnetic bearing of six heteropolar alternating current just realizes the stable suspension of radial two degrees of freedom by a three-phase inverter, and control is simple, and compact structure has lower rotor core loss, less magnetic field disturbance and less displacement rigidity.
The technical scheme is as follows: the utility model provides a mixed magnetic bearing of six utmost point heteropolar type alternating current, including stator and rotor, the stator includes outer control iron core and interior permanent magnet stator, outer control iron core has suspension utmost point A, B, C and suspension utmost point a, b, c that the interval set up along interior circumference evenly distributed, suspension utmost point an, b, c inboard are fan-shaped ring structure, connect into interior permanent magnet stator through six permanent magnets P1 ~ P6 and three fan-shaped ring iron core T1 ~ T3 of isostructure, there is branch magnetic air gap between suspension utmost point A, B, C and three fan-shaped ring iron core T1 ~ T3, there is main air gap between interior permanent magnet stator and the rotor; the rotor comprises a rotor iron core and a rotating shaft, and the rotating shaft penetrates through the rotor iron core; centralized control windings W1-W6 are wound on the suspension poles A, B, C, a, B and C, the control windings W1 and W5, the control windings W2 and W6 and the control windings W3 and W4 are respectively connected in series in an opposite direction and then connected into a Y-shaped three-phase winding, and a three-phase inverter supplies power.
Further, one of the permanent magnet axes is located at + x-axis counterclockwise by 30 °, and the six permanent magnets are arranged in a heteropolar structure according to NSSNNSSNNSSN and embedded in the inner permanent magnet stator between the pole pairs at 60 ° to each other.
Further, the levitation poles A, B, C are 120 ° out of phase with each other, and the levitation pole a axis coincides with the + x axis, the levitation poles a, b, c are 120 ° out of phase with each other, and the levitation pole a axis is 60 ° counterclockwise from the + x axis.
Furthermore, the rotor core, the outer control core and the inner permanent magnet stator are all formed by laminating silicon steel sheets, and the six permanent magnets are made of rare earth permanent magnet materials.
Further, the main air gap length giSub-magnetic air gap length goThe pole areas of the suspended poles a, b and c are SiThe suspended pole A, B, C has a pole area SoAnd the relationship therebetween satisfies:
further, the number of turns of the control winding on the floating pole A, B, C and the floating poles a, b, c satisfies:
wherein N isoNumber of control winding turns, N, on floating pole A, B, CiThe number of control winding turns on the levitation poles a, b, c.
Has the advantages that:
the utility model provides a six utmost point heteropolar type alternating current hybrid magnetic bearings and design method thereof introduces and divides the magnetic air gap, adopts a three-phase inverter just can realize that the rotor stably suspends, has little displacement rigidity in addition, low rotor core loss, advantages such as the control of being convenient for.
Drawings
Fig. 1 is a left side view of a hexapole heteropolar ac hybrid magnetic bearing of the present invention;
fig. 2 is a circuit diagram of the permanent magnetic flux and the control flux of the hexa-pole heteropolar ac hybrid magnetic bearing of the present invention;
fig. 3 is a permanent magnet bias equivalent magnetic circuit diagram of a hexapole heteropolar ac hybrid magnetic bearing of the present invention;
fig. 4 is an equivalent control magnetic circuit diagram of a hexapole heteropolar ac hybrid magnetic bearing according to the present invention.
The magnetic control device comprises a stator 1, a rotor 2, an outer control iron core 3, an inner permanent magnet stator 4, a sub-magnetic air gap 5, a permanent magnet 6, a main air gap 7, a rotor iron core 8, a rotating shaft 9, a static bias magnetic flux 10 and a control magnetic flux 11.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The specific implementation mode is as shown in fig. 1-4, the utility model discloses a hexapole heteropolar alternating current hybrid magnetic bearing, which comprises a stator 1 and a rotor 2, wherein the stator 1 comprises an outer control iron core 3 and an inner permanent magnet stator 4; six two groups of suspension poles A, B, C, a, b and c forming an angle of 60 degrees with each other are uniformly distributed on the inner circumference of the outer control iron core 3. The levitation poles A, B, C are 120 ° out of phase with the levitation pole a axis coinciding with the + x axis, the levitation poles a, b, c are 120 ° out of phase with each other, and the levitation pole a axis lies 60 ° counterclockwise from the + x axis. The inner sides of the suspension poles a, b and c are in a fan-shaped circular ring structure, the inner permanent magnet stator 4 is formed by six permanent magnets 6 and three fan-shaped circular ring iron cores T1-T3, the six permanent magnets 6 are respectively marked as permanent magnets P1-P6, and the attached drawing 1 is shown. A magnetic separation air gap 5 exists between the suspension pole A, B, C and three sector annular iron cores T1-T3, and a main air gap 7 exists between the inner permanent magnet stator 4 and the rotor 2. Six permanent magnets P1-P6 are arranged into a heteropolar structure according to NSSNNSSNNSSN, and are embedded into inner permanent magnets between pole pairs at an angle of 60 degreesIn the stator 4. Only the suspension pole A, B, C and the inner permanent magnet stator 4 form three partial magnetic air gaps 5 with equal length, and the magnetic resistance is recorded as RA～RC. Six main air gaps 7 are formed between the inner permanent magnet stator 4 and the rotor 2, and the magnetic resistance is recorded as R1～R6. ABC has a polar area denoted SoAnd the polar area of abc is denoted as Si. The rotor 2 includes a rotor core 8 and a rotating shaft 9, and the rotating shaft 9 penetrates through the rotor core 8.
The three suspension poles (suspension pole A, suspension pole B and suspension pole C) are 120 degrees different from each other, and the axis of the suspension pole A is coincident with the axis + x.
The three suspension poles (suspension pole a, suspension pole b and suspension pole c) are 120 degrees different from each other, and the axis of the suspension pole a is 60 degrees anticlockwise from the + x axis.
The permanent magnet axis is located at the + x axis and 30 degrees in the anticlockwise direction, and six permanent magnets are mutually embedded into the inner permanent magnet stator between the pole pairs at an angle of 60 degrees and are arranged into a heteropolar structure according to NSSNNSSNNSSN.
In the present embodiment, the rotor core 8 and the outer control core 3 are formed by laminating silicon steel sheets. Six permanent magnets 6 are made of rare earth permanent magnet material. The control winding is formed by winding an electromagnetic coil and then dipping in paint and drying.
In actual use, parameters of the hexapole heteropolar alternating-current hybrid magnetic bearing structure can be designed according to requirements, and the specific design method comprises the following steps:
s1: a magnetic circuit model is constructed according to the structure of the hexapole heteropolar alternating current hybrid magnetic bearing, and a magnetic circuit equation is obtained by utilizing kirchhoff's law.
Referring to fig. 3, the magnetic circuit equation is:
the magnetic resistances of the magnetic separation air gaps 5 between the suspension pole A, B, C and the three fan-shaped annular iron cores T1-T3 are respectively marked as RA～RCAnd the magnetic resistance of six main air gaps 7 formed between the inner permanent magnet stator 4 and the rotor 2 is recorded as R1～R6，F1～F4Respectively are magnetomotive forces at nodes 1-4,Fmis permanent magnet magnetomotive force.
S2: and determining the vector magnetizing directions of the six permanent magnets and the permanent magnet materials of the permanent magnets.
The vector magnetizing directions designed by six permanent magnets are sequentially
(-1,0,0)，
(-1,0,0)，
The provided bias magnetic field is distributed densely in the rotor, and the control iron core 3 is sparser outside. Permanent magnet magnetomotive force FmRelating to the demagnetization curve of the permanent magnetic material. The Nd-Fe-B is a high-performance rare earth permanent magnet material and has the characteristics of high residual magnetic induction intensity and B at room temperaturerCan reach 1.47T, high magnetic induction coercive force, HcCan reach 992 kA/m. The demagnetization curve of the neodymium iron boron material is close to a straight line and meets the following requirements:
wherein, FcFor coercive magnetic potential of permanent magnetsmFor magnetic flux of external magnetic path of permanent magnet, phirFor permanent magnet residual flux, when the rotor is in the no-load state: air gap bias magnetic induction
Фm＝B0SiThe permanent magnet can be according to the formula
Designing; wherein HpmIs the length of the permanent magnet, HcCoercive force of permanent magnet, ApmIs a cross-sectional area of the permanent magnet, mu0For vacuum permeability, BrThe residual magnetic induction intensity of the permanent magnet is obtained.
S3: the bias flux density is designed, and the bias flux passing through the main air gap is expressed as:
wherein, phiPRiRepresenting the bias flux through the main air gap, phi, in order to obtain the maximum magnetic forcePRi＝ФPCi＝ФP0＝ФsAnd/2 (i is 1,2,3,4,5 and 6), and the bias magnetic density is designed to be B0＝BS/2 wherein BSSaturation magnetic induction of a mixed magnetic bearing of the hexapole heteropolar alternating current type, B0Biasing the flux for the air gap. In order to avoid magnetic saturation of silicon steel materials, the saturation magnetic induction intensity B of the six-pole heteropolar alternating-current hybrid magnetic bearing is setSThe general value is 1.2-1.4T, and B is taken in the embodimentSIs 1.2T, and thus, the air gap bias flux B0Designed to be 0.6T.
S4: determining a control flux, which is expressed as:
wherein, phiCRiThe control magnetic flux passing through the main air gap is shown, and the maximum suspension force is obtained in the x direction for design explanation: the maximum control current i is led into the control windings W1 and W5xmaxControl windings W2 and W6, control windings W3 and W4 respectively pass negative half-0.5 i of the maximum control current in the x directionxmaxGenerating the maximum suspension force F in the + x directionxmax。
In the formula, phiPRiPhi ofCRiRespectively represent a warpBias and control fluxes passing through the main air gap, FaC、FAbAnd FcBDenotes the levitation force along the magnetic poles aC, Ab and cB, respectively, whenPRi＝ФCri＝ФP0(i ═ 1,2,3,4,5,6), then:
s5: designing a main air gap 7 and a sub-magnetic air gap 5 according to the magnetic path equation in S1, and setting the length g of the main air gap 7iThe length g of the sub-magnetic air gap 5oThe pole areas of the suspended poles a, b and c are SiThe suspended pole A, B, C has a pole area SoAnd the relationship therebetween satisfies:
the design method of the main air gap 7 and the sub-magnetic air gap 5 is as follows, R is recordedi＝Rn(i＝1,2,3,4,5,6)，Rj＝Rw(j ═ A, B, C) of
F2＝6F1Substituting into formula (1) to obtain
And because of
So as to obtain the compound with the characteristics of,
assuming that the pole area of the levitation pole A, B, C is equal to the pole area of the levitation poles a, b, c, the main air gap 7 can be designed to be 0.5mm, and the sub-air gap 5 can be designed to be 2mm in this embodiment.
S6: design of the floating pole A, B, C andthe number of turns of the control winding on the suspension poles a, b and c satisfies the following conditions:
wherein N isoNumber of control winding turns, N, on floating pole A, B, CiThe number of control winding turns on the levitation poles a, b, c.
Assuming that the pole area of the levitation pole A, B, C is equal to the pole area of the levitation poles a, b, c, the main air gap 7 is designed to be 0.5mm, the sub-magnetic air gap 5 is designed to be 2mm, and there is No:Ni1: 5. Therefore, in the present embodiment, the upper control windings W1 to W3 of the levitation pole A, B, C are designed to have 200 turns, and the control windings W4 to W6 on the levitation poles a, b, c are designed to have 40 turns.
The permanent magnet 6 provides a static bias flux 10, and as shown in fig. 2, the magnetic path of the static bias flux 10 is divided into two paths: one path of magnetic flux starts from the N pole of the permanent magnet 6, passes through the inner permanent magnet stator 4, the main air gap 7, the rotor 2 and returns to the S pole of the permanent magnet; the other path of magnetic flux starts from the N pole of the permanent magnet 6 and returns to the S pole of the permanent magnet through the inner permanent magnet stator 4, the magnetic separation air gap 5, the suspension pole and the outer control iron core 3.
Taking the a-phase winding as an example to generate the control magnetic flux 11, as shown in fig. 2, the magnetic circuit is: the suspension pole A, the outer control iron core 3, the suspension pole b, the inner permanent magnet stator 4, the main air gap 7, the rotor iron core 8, the main air gap 7, the inner permanent magnet stator 4, the sub-magnetic air gap 5 and the suspension pole A form a closed path.
Suspension principle: assuming that the rotor is disturbed in a certain direction, the resultant force of the bias flux will be directed in the off-core direction. At this time, the control current generates the control magnetic flux 11, and the control magnetic flux interacts with the static bias magnetic flux 10, so that the air-gap magnetic field on the same side of the core-offset direction of the rotor 2 is superposed and weakened, and the air-gap magnetic field on the opposite side is superposed and strengthened, and a force opposite to the offset direction of the rotor 2 is generated on the rotor 2, and the rotor 2 is pulled back to the radial balance position. Assuming that the rotor 2 is subjected to disturbance force in the x negative direction, the eddy current displacement sensor detects the displacement variation of the rotor offset reference position, the controller changes the displacement signal of the rotor 2 into a control signal, the voltage-current power amplifier changes the control signal into a control current, and the electromagnetic flux changes, so that the rotor 2 returns to the original balance position.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A six-pole heteropolar alternating-current hybrid magnetic bearing comprises a stator (1) and a rotor (2), and is characterized in that the stator (1) comprises an outer control iron core (3) and an inner permanent magnet stator (4), wherein suspension poles A, B, C and suspension poles a, b and c which are arranged at intervals are uniformly distributed on the outer control iron core (3) along the inner circumference, the inner sides of the suspension poles a, b and c are of a fan-shaped circular ring structure, the inner sides of the suspension poles a, b and c are connected with three fan-shaped circular ring iron cores T1-T3 of the same structure through six permanent magnets P1-P6 to form the inner permanent magnet stator (4), a magnetic separation air gap (5) exists between the suspension pole A, B, C and the three fan-shaped circular ring iron cores T1-T3, and a main air gap (7) exists between the inner permanent magnet stator (4) and the rotor (2); the rotor (2) comprises a rotor iron core (8) and a rotating shaft (9), and the rotating shaft (9) penetrates through the rotor iron core (8); centralized control windings W1-W6 are wound on the suspension poles A, B, C, a, B and C, the control windings W1 and W5, the control windings W2 and W6 and the control windings W3 and W4 are respectively connected in series in an opposite direction and then connected into a Y-shaped three-phase winding, and a three-phase inverter supplies power.
2. The six-pole heteropolar ac hybrid magnetic bearing according to claim 1, wherein one of the permanent magnet axes lies 30 ° counterclockwise from the + x-axis, and the six permanent magnets are arranged in a heteropolar configuration according to NSSNNSSNNSSN embedded at 60 ° from each other in the inner permanent magnet stator (4) between the pole pairs.
3. The hexapole heteropolar ac hybrid magnetic bearing of claim 1 wherein the suspended poles A, B, C are 120 ° apart from each other and the suspended pole a axis coincides with the + x axis, the suspended poles a, b, c are 120 ° apart from each other and the suspended pole a axis lies 60 ° counterclockwise from the + x axis.
4. The hexa-polar heteropolar alternating current hybrid magnetic bearing according to claim 1, wherein the primary air gap (7) length giThe length g of the magnetic separation air gap (5)oThe pole areas of the suspended poles a, b and c are SiThe suspended pole A, B, C has a pole area SoAnd the relationship therebetween satisfies:
。
5. the six-pole heteropolar alternating current hybrid magnetic bearing of claim 4 wherein the number of control winding turns on the suspended pole A, B, C and suspended poles a, b, c is such that:
wherein N isoNumber of control winding turns, N, on floating pole A, B, CiThe number of control winding turns on the levitation poles a, b, c.
6. The six-pole heteropolar alternating-current hybrid magnetic bearing according to any one of claims 1 to 5, wherein the rotor core (8), the outer control core (3) and the inner permanent magnet stator (4) are each formed by silicon steel sheets laminated, and the six permanent magnets (6) are made of rare-earth permanent magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120100151.XU CN214367289U (en) | 2021-01-14 | 2021-01-14 | Hexapole heteropolar alternating current hybrid magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120100151.XU CN214367289U (en) | 2021-01-14 | 2021-01-14 | Hexapole heteropolar alternating current hybrid magnetic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367289U true CN214367289U (en) | 2021-10-08 |
Family
ID=77955964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120100151.XU Expired - Fee Related CN214367289U (en) | 2021-01-14 | 2021-01-14 | Hexapole heteropolar alternating current hybrid magnetic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815005A (en) * | 2021-01-14 | 2021-05-18 | 淮阴工学院 | Six-pole heteropolar alternating-current hybrid magnetic bearing and design method thereof |
-
2021
- 2021-01-14 CN CN202120100151.XU patent/CN214367289U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815005A (en) * | 2021-01-14 | 2021-05-18 | 淮阴工学院 | Six-pole heteropolar alternating-current hybrid magnetic bearing and design method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112815005B (en) | Design method of hexapole heteropolar alternating current hybrid magnetic bearing | |
| CN104410204B (en) | Flywheel energy storage device | |
| WO2021143759A1 (en) | Radial two-degree-of-freedom six-pole alternating-current/direct-current hybrid magnetic bearing of new structure | |
| CN204186802U (en) | A kind of Novel shaft-radial three freedom degree mixed magnetic bearing | |
| CN104265761A (en) | Novel axial-radial three-degree-of-freedom hybrid magnetic bearing | |
| CN106812797B (en) | A kind of double layered stator permanent magnet offset radial magnetic bearing | |
| CN108050156A (en) | A kind of sextupole hybrid magnetic bearing | |
| Severson et al. | Outer-rotor ac homopolar motors for flywheel energy storage | |
| CN204284204U (en) | A kind of low power consumption permanent magnet biased axial hybrid magnetic bearing | |
| CN214367289U (en) | Hexapole heteropolar alternating current hybrid magnetic bearing | |
| CN206221508U (en) | A kind of two degrees of freedom permanent magnet offset radial hybrid magnetic bearing | |
| CN108696190A (en) | A kind of Three Degree Of Freedom permanent magnet type non-bearing motor with magnetism-isolating loop | |
| CN103925293B (en) | A kind of thin slice rotor radial hybrid magnetic bearing | |
| CN211574040U (en) | Radial non-coupling three-degree-of-freedom direct-current hybrid magnetic bearing | |
| CN111089116B (en) | Design method of suspension force symmetric hexapole hybrid magnetic bearing | |
| CN108649764A (en) | A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation | |
| CN104121288A (en) | Active and passive outer rotor magnetic bearing | |
| CN216951299U (en) | Two-half-degree-of-freedom hybrid magnetic bearing | |
| CN211574039U (en) | New structure radial two-degree-of-freedom hexapole alternating current/direct current hybrid magnetic bearing | |
| CN214534059U (en) | Disc stator type AC/DC hybrid magnetic bearing | |
| CN211574037U (en) | Cross-tooth quadrupole hybrid magnetic bearing with novel structure | |
| CN108808915A (en) | A kind of Three Degree Of Freedom permanent magnet type non-bearing motor | |
| CN104121290B (en) | A kind of internal rotor magnetic bearing | |
| CN208858775U (en) | A kind of axial-radial sextupole hybrid magnetic bearing of inverter-driven | |
| CN104121289B (en) | Outer rotor magnetic bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUAI'AN FEMCO STEEL TECHNOLOGY CO.,LTD. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2022980014387 Denomination of utility model: Hexapole Heteropolar AC Hybrid Magnetic Bearing Granted publication date: 20211008 License type: Exclusive License Record date: 20220908 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |