CN103683779B - Stator permanent magnet biasing permanent magnet type non-bearing motor - Google Patents
Stator permanent magnet biasing permanent magnet type non-bearing motor Download PDFInfo
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- CN103683779B CN103683779B CN201310724895.9A CN201310724895A CN103683779B CN 103683779 B CN103683779 B CN 103683779B CN 201310724895 A CN201310724895 A CN 201310724895A CN 103683779 B CN103683779 B CN 103683779B
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Abstract
The present invention open stator permanent magnet biasing permanent magnet type non-bearing motor, including electric machine casing, rotor, stator it is provided with in electric machine casing, described stator includes left side stator core, right side stator core, left side is provided with the annular stator permanent magnet of axial magnetized between stator core, right side stator core, in the stator slot of left side stator core, torque winding, suspending windings are set, torque winding, suspending windings are set in the stator slot of right side stator core；Described rotor includes that rotor core, rotor core both sides are respectively arranged with left side ring-shaped rotor permanent magnet, right circular rotor permanent magnet and the rotating shaft of diametrical magnetization.It is an object of the invention to overcome the deficiency of existing permanent magnet type non-bearing motor, it is provided that a kind of control is simple, suspension controls, direct torque is separate, and can produce the stator permanent magnet biasing permanent magnet type non-bearing motor structure of bigger radial suspension force.
Description
Technical field
The present invention relates to motor device technical field, be specifically related to a kind of stator permanent magnet biasing permanent magnet type non-bearing motor controlling simply, can producing bigger radial suspension force.
Background technology
Bearing-free motor has without fretting wear, without lubrication, it is easily achieved higher rotating speed and greater power is run, the advantages such as permanent magnet type non-bearing motor the most therein has simple in construction, operational reliability is high, volume is little, lightweight, efficiency is high and power density is big, have broad application prospects in the field such as flywheel energy storage, high-speed machine tool spindle motor and canned pump, centrifuge, compressor, high-speed micro hard disk drive.
Existing permanent magnet type non-bearing motor is the levitation force winding additional by superposition on the torque winding of the stator slot of tradition permagnetic synchronous motor, double winding is powered by the three-phase alternating-current supply that frequency is identical respectively and is produced the suspending windings magnetic field and torque winding magnetic field rotated, and suspending windings magnetic field number of pole-pairs be PB, torque winding magnetic field be PM, when the most only meeting the relation of PB=PM ± 1, suspending windings magnetic field, torque winding magnetic field and rotor permanent magnet magnetic field triple interaction could produce and stablize controlled radial suspension force.Detected rotor radial displacement by radial displacement transducer, build suspension closed-loop control system, it is achieved rotor stability suspends.Owing to torque is to be produced by torque winding magnetic field and permanent magnet magnetic field interactions, and radial suspension force is mainly produced by suspending windings magnetic field and permanent magnet magnetic field interactions, and meanwhile, suspending power is produced by torque winding magnetic field also certain impact.When selecting rotor permanent magnet body thickness, mutual restricting relation between the size of radial suspension force and level of torque need to be considered, therefore, limit the generation of radial suspension force；Simultaneously, close coupling is there is between suspending windings magnetic field and torque winding magnetic field, the decoupling control policy that need to use complexity carries out uneoupled control to rotary system and suspension system, and suspending power is closely related with rotor position angle, therefore radial suspension force that existing permanent magnet type non-bearing motor has generation is less, control complicated and that precision is relatively low shortcoming.
Summary of the invention
It is an object of the invention to overcome the deficiency of existing permanent magnet type non-bearing motor, it is provided that a kind of control is simple, suspension controls, direct torque is separate, and can produce the stator permanent magnet biasing permanent magnet type non-bearing motor structure of bigger radial suspension force.
The present invention is achieved through the following technical solutions:
Stator permanent magnet biasing permanent magnet type non-bearing motor, including electric machine casing, rotor, stator it is provided with in electric machine casing, it is characterized in that: described stator includes left side stator core (1), right side stator core (7), the annular stator permanent magnet (2) of axial magnetized it is provided with between left side stator core (1), right side stator core (7), in the stator slot in left side stator core (1), torque winding (4), suspending windings (3) are set, torque winding (9), suspending windings (8) are set in the stator slot of right side stator core (7)；
Described rotor includes that rotor core (6), rotor core (6) both sides are respectively arranged with left side ring-shaped rotor permanent magnet (5) of diametrical magnetization, right circular rotor permanent magnet (10) and rotating shaft.
The further Technological improvement plan of the present invention is:
Described annular stator permanent magnet (2) provides quiescent biasing magnetic flux (11,13) for motor, suspending windings (3,8) is that DC source is powered, thering is provided to suspend for motor and control magnetic flux (12,14), rotor is interacted produced radial suspension force by quiescent biasing magnetic flux (11,13), control magnetic flux (12,14) that suspends.
The further Technological improvement plan of the present invention is:
Described annular stator permanent magnet (2), left side ring-shaped rotor permanent magnet (5) and right circular rotor permanent magnet (10) are that rare earth permanent-magnetic material is made.
The further Technological improvement plan of the present invention is:
Described left side stator core (1), right side stator core (7) and rotor core (6) are made by permeability magnetic material.
The present invention is compared with prior art, there is following obvious advantage, the present invention is provided quiescent biasing magnetic flux by the annular stator permanent magnet of an axial magnetized, suspending windings is by being powered by DC source, producing suspends controls magnetic flux, both are overlapped mutually effect, ensure that stator, air gap between rotor is uniform, realize rotor stability to suspend, suspend and control, direct torque is separate, not only can produce bigger radial suspension force, and control advantage that is simple and that be easily achieved, a five-degree magnetic suspension support system should symmetrical in pairs use, can be widely applied to flywheel energy storage, various high-speed machine tool spindle motors and canned pump class, centrifuge, compressor, the fields such as high-speed small-size hard disk drive.
Accompanying drawing explanation
Fig. 1 is the axial arrangement schematic diagram of the present invention；
Fig. 2 is coils arrangement of the present invention and radial magnetic circuit schematic diagram.
Detailed description of the invention
As shown in Figure 1, 2, the present invention includes electric machine casing, rotor, stator it is provided with in electric machine casing, stator includes left side stator core 1, right side stator core 7, left side is provided with the annular stator permanent magnet 2 of axial magnetized between stator core 1, right side stator core 7, in the stator slot of left side stator core 1, torque winding 4, suspending windings 3 are set, in the stator slot of right side stator core 7, torque winding 9, suspending windings 8 are set, suspending windings 3, suspending windings 8 are positioned at stator slot internal layer, and torque winding 4, torque winding 9 are positioned at stator slot outer layer；Rotor includes that rotor core 6, rotor core 6 both sides are respectively arranged with left side ring-shaped rotor permanent magnet 5, right circular rotor permanent magnet 10 and the rotating shaft of diametrical magnetization；Annular stator permanent magnet 2 provides quiescent biasing magnetic flux 11, quiescent biasing magnetic flux 13 for motor, quiescent biasing magnetic flux 11,13 magnetic circuit is: magnetic flux, from annular stator permanent magnet 2N pole, returns to annular stator permanent magnet 2S pole by right side stator core 7, right motor air gap, left side stator core 1；Suspending windings 3, suspending windings 8 are powered for DC source, thering is provided for motor suspends controls magnetic flux 12, suspending controls magnetic flux 14, suspending windings 3, suspending windings 8 produce the magnetic circuit of the control magnetic flux 12,14 that suspends: stator core on the downside of air gap, motor on the downside of air gap, rotor, motor on the upside of stator core on the upside of motor, motor, again through motor stator yoke, constitute closed-loop path, rotor by quiescent biasing magnetic flux 11, quiescent biasing magnetic flux 13, suspend control magnetic flux 12, suspending controls magnetic flux 14 and interacts generation radial suspension force；Annular stator permanent magnet 2, left side ring-shaped rotor permanent magnet 5 and right circular rotor permanent magnet 10 are made for rare earth permanent-magnetic material；Left side stator core 1, right side stator core 7 and rotor core 6 is made by permeability magnetic material.
As in figure 2 it is shown, outer layer of the present invention is torque winding 4, torque winding 9, arrangement mode is identical with common permagnetic synchronous motor；Suspending windings is divided into x direction controlling winding and y direction controlling winding, left side x direction controlling winding to include winding 1,2,3 and winding 7,8,9, and winding 1 and 7 is in series, and winding 2 and 8 is in series, and winding 3 and 9 is in series；Left side y direction controlling winding includes winding 4,5,6 and winding 10,11,12, and winding 4 and 10 is in series, and winding 5 and 11 is in series, and winding 6 and 12 is in series；Right side x direction controlling winding includes winding 24,13,14 and winding 18,19,20, and winding 24 and 18 is in series, and winding 13 and 19 is in series, and winding 14 and 20 is in series；Right side y direction controlling winding includes winding 15,16,17 and winding 21,22,23, and winding 15 and 21 is in series, and winding 16 and 22 is in series, and winding 17 and 23 is in series；The suspending windings on left side and right side independently controls to realize rotor four-degree-of-freedom and suspends；The x direction controlling winding of arranged on left and right sides and y direction controlling winding are connected respectively and can be realized the suspension of rotor two-freedom.
Part that the present invention does not relate to is the most same as the prior art maybe can use prior art to be realized.
Claims (4)
1. stator permanent magnet biasing permanent magnet type non-bearing motor, including electric machine casing, rotor, stator it is provided with in electric machine casing, it is characterized in that: described stator includes left side stator core (1), right side stator core (7), the annular stator permanent magnet (2) of axial magnetized it is provided with between left side stator core (1), right side stator core (7), in the stator slot in left side stator core (1), torque winding (4), suspending windings (3) are set, torque winding (9), suspending windings (8) are set in the stator slot of right side stator core (7)；
Described rotor includes that rotor core (6), rotor core (6) both sides are respectively arranged with left side ring-shaped rotor permanent magnet (5) of diametrical magnetization, right circular rotor permanent magnet (10) and rotating shaft.
Stator permanent magnet the most according to claim 1 biasing permanent magnet type non-bearing motor, it is characterized in that: described annular stator permanent magnet (2) provides quiescent biasing magnetic flux (11,13) for motor, suspending windings (3,8) is that DC source is powered, thering is provided to suspend for motor and control magnetic flux (12,14), rotor is interacted produced radial suspension force by quiescent biasing magnetic flux (11,13), control magnetic flux (12,14) that suspends.
Stator permanent magnet the most according to claim 1 and 2 biasing permanent magnet type non-bearing motor, it is characterised in that: described annular stator permanent magnet (2), left side ring-shaped rotor permanent magnet (5) and right circular rotor permanent magnet (10) they are that rare earth permanent-magnetic material is made.
Stator permanent magnet the most according to claim 1 and 2 biasing permanent magnet type non-bearing motor, it is characterised in that: described left side stator core (1), right side stator core (7) and rotor core (6) are made by permeability magnetic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310724895.9A CN103683779B (en) | 2013-12-25 | 2013-12-25 | Stator permanent magnet biasing permanent magnet type non-bearing motor |
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| CN201310724895.9A CN103683779B (en) | 2013-12-25 | 2013-12-25 | Stator permanent magnet biasing permanent magnet type non-bearing motor |
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| CN103683779A CN103683779A (en) | 2014-03-26 |
| CN103683779B true CN103683779B (en) | 2016-08-17 |
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| CN104389793A (en) * | 2014-10-17 | 2015-03-04 | 山东科技大学 | Magnetic levitation axial flow impeller driving device |
| CN105978295B (en) * | 2016-06-08 | 2018-06-29 | 淮阴工学院 | A kind of integrated suspension of five-freedom degree magnetic motor |
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| CN106026615B (en) * | 2016-06-08 | 2018-05-29 | 淮阴工学院 | A kind of integrated suspension of five-freedom degree magnetic direct driving motor |
| CN108599498A (en) * | 2018-06-30 | 2018-09-28 | 淮阴工学院 | A kind of Three Degree Of Freedom asynchronous type bearing-free motor |
| CN108712044B (en) * | 2018-06-30 | 2020-06-05 | 淮阴工学院 | Stator permanent magnet offset lamellar inner rotor bearingless asynchronous motor |
| CN108712048B (en) * | 2018-06-30 | 2020-07-24 | 淮阴工学院 | Stator permanent magnet type five-degree-of-freedom conical bearingless switched reluctance motor |
| CN108712043B (en) * | 2018-06-30 | 2020-09-25 | 淮阴工学院 | Stator permanent magnet biased five-degree-of-freedom bearingless asynchronous motor |
| CN108808915A (en) * | 2018-06-30 | 2018-11-13 | 淮阴工学院 | A kind of Three Degree Of Freedom permanent magnet type non-bearing motor |
| CN108809026A (en) * | 2018-06-30 | 2018-11-13 | 淮阴工学院 | A kind of five degree of freedom tapered bearingless asynchronous motor |
| CN108599499A (en) * | 2018-06-30 | 2018-09-28 | 淮阴工学院 | A kind of five degree of freedom stator permanent-magnet induction-type bearingless motor |
| CN108832787A (en) * | 2018-06-30 | 2018-11-16 | 淮阴工学院 | A kind of five degree of freedom stator permanent magnet biasing induction-type bearingless motor |
| CN108718144A (en) * | 2018-06-30 | 2018-10-30 | 淮阴工学院 | Four-degree-of-freedom stator permanent-magnet induction-type bearingless motor |
| CN114400853B (en) * | 2022-02-21 | 2023-10-24 | 南京航空航天大学 | Bearingless switch reluctance motor |
| CN116599249A (en) * | 2023-02-27 | 2023-08-15 | 淮阴工学院 | 12/8 magnetic suspension switch reluctance motor and design method |
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| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| CN102377298A (en) * | 2011-11-14 | 2012-03-14 | 江苏大学 | Five-degree-of-freedom (five-DOF) bearing-free permanent magnet synchronous motor |
| EP2492528A1 (en) * | 2011-02-23 | 2012-08-29 | Atmostat | Rotary device with a thrust rolling bearing and magnetic suspension means to relief the thrust load on the rolling bearing in particular for a flywheel |
| CN203632512U (en) * | 2013-12-25 | 2014-06-04 | 淮阴工学院 | Stator permanent magnet biased permanent magnet type bearingless motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102306995B (en) * | 2011-08-26 | 2013-08-28 | 北京航空航天大学 | Permanent magnet biased bearingless switched reluctance motor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
| EP2492528A1 (en) * | 2011-02-23 | 2012-08-29 | Atmostat | Rotary device with a thrust rolling bearing and magnetic suspension means to relief the thrust load on the rolling bearing in particular for a flywheel |
| CN102377298A (en) * | 2011-11-14 | 2012-03-14 | 江苏大学 | Five-degree-of-freedom (five-DOF) bearing-free permanent magnet synchronous motor |
| CN203632512U (en) * | 2013-12-25 | 2014-06-04 | 淮阴工学院 | Stator permanent magnet biased permanent magnet type bearingless motor |
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| CN103683779A (en) | 2014-03-26 |
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Effective date of registration: 20171201 Address after: 223001 Beijing North Road, Jiangpu District, Huaian City, Jiangsu Province, No. 103 Patentee after: Jiangpu Huaian District Science and technology transformation service center Address before: While the economic and Technological Development Zone of Jiangsu Province, Huaian City, 223005 East Road No. 1 Patentee before: Huaijin Polytechnical College |
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Effective date of registration: 20220119 Address after: 223001 No. 58, Qinghe South Road, qingjiangpu District, Huai'an City, Jiangsu Province Patentee after: Huai'an qingjiangpu district market supervision comprehensive service center Address before: 223001 No.103, Beijing North Road, qingjiangpu District, Huai'an City, Jiangsu Province Patentee before: Jiangpu Huaian District Science and technology transformation service center |