CN104883027A - Cylindrical-type linear magnetic-gear composite permanent magnet motor - Google Patents
Cylindrical-type linear magnetic-gear composite permanent magnet motor Download PDFInfo
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- CN104883027A CN104883027A CN201510327369.8A CN201510327369A CN104883027A CN 104883027 A CN104883027 A CN 104883027A CN 201510327369 A CN201510327369 A CN 201510327369A CN 104883027 A CN104883027 A CN 104883027A
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Abstract
The invention discloses a cylindrical-type linear magnetic-gear composite permanent magnet motor, and aims at solving a problem of thrust ripple of a conventional magnetic-gear composite motor. Especially for load disturbance or the starting or braking of a motor, the motor improves the operation stability. The motor comprises a brushless DC linear motor and a linear magnetic gear. The motor is also provided with double mechanical ports, and is in a three-layer gap structure. The motor comprises a main armature winding and an auxiliary damping winding, and can achieve the bidirectional transmission of electromechanical energy. The brushless DC linear motor and the linear magnetic gear respectively employ a cylindrical-type structure for coaxial integration. In other words, a double-stator double-rotor structure is formed through a low-speed rotor (17) and an inner stator (14) which form the magnetic gear, and a high-speed rotor (5) and an outer stator (6) which form the brushless DC linear motor.
Description
Technical field
The invention belongs to motor and Linear transmission technical field, be specifically related to a kind of drum type brake brushless direct-current linear motor, there is high pushing force density, High Power Factor feature, be applicable to low speed, powerful direct-drive type power transmission system, also can be used for the systems such as Stirling generating and Sea wave energy generating.
Background technology
High-thrust-density linear motor is increasingly extensive in the application in Electric Drive field, because eliminating intermediate conversion mechanism rotary motion being converted to rectilinear motion, reducing device volume, saving system cost.Owing to there is not movement inertia and the drag effects of intermediate transmission mechanism, the dynamic and static state performance of Linear transmission system is significantly improved.Modern electric dragging system tends to Direct driver always, can save mechanical gear drive mechanism like this, avoids consequent vibration noise problem, reduces mechanical loss, obtains higher system effectiveness.But direct-drive motor is in order to export more high thrust, and general volume is comparatively large, and during load running, electric current is comparatively large, and the cost of control circuit also can be higher.Britain Kais.Atallah, Chinese river are built medium people and are proposed magnetic-field modulation-type magnetic-gear (US7973441B2; GB2439111A; 201010118737.5); utilize magnetic drives; achieve the gears meshing of mechanical contact; there is force density high; mechanical loss is low; the features such as untouchable thrust transmission and overload self-shield, especially under the particular surroundings such as low temperature and low pressure, can avoid the adverse effect that traditional mechanical gear causes because of lubricating oil volatilization etc.On this basis, magnetic-gear and magneto combine and obtain direct-drive type magnetic gear composite type permanent magnet motor (GB2437568B by the people such as Britain Kais.Atallah, Anthony G.Razzell and Chinese Zhang Yuejin; US2011/0042965A1; US6794781B2; 201010608927.5), there is the plurality of advantages such as compact conformation, torque density is high, efficiency is high.Compound machine is the development of magnetic gear train assembly; still belong to magnetic gear drive category; the transmission of inner and outer rotors moment is realized by air-gap field modulation; a similar magnetic suspension servomechanism; compared with conventional motors; its weak point be torque fluctuations and vibration noise larger; especially in starting or load disturbance process; owing to not being rigid contact connection; usually there will be comparatively violent velocity perturbation problem, therefore to stability and strict its application of occasion of positioning accuracy request, there is certain limitation.
Summary of the invention
The object of the invention is the force oscillation problem solving existing magnetic gear compound machine, especially in load disturbance or motor starting and braking process, improve the operation stability of motor.
The present invention is drum type brake straight line magnetic gear composite magnetoelectric machine, comprise a brushless direct-current linear motor and a straight line magnetic-gear, this composite magnetoelectric machine has double mechanical port, in three layers of gap structure, comprise main armature winding and Auxiliary Damping winding, the bi-directional of electromechanical energy can be realized; Described brushless direct-current linear motor and straight line magnetic-gear all adopt cylinder mode coaxially integrated, namely form the two Structure of mover of bimorph transducer by the low speed mover 17 and internal stator 14 that form magnetic-gear with the high speed mover 5 and external stator 6 that form brushless direct-current linear motor.
The low speed rotor permanent magnet outwards poly-magnetic of this motor, improves internal layer air gap flux density.This motor high speed mover has inside and outside two-layer magnetic circuit, and mutually shield, internal layer permanent magnet is poly-magnetic outwards, outer permanent magnet is poly-magnetic inwardly, thus obtain more satisfactory bilateral magnetic field in high speed mover both sides, magnetic-gear harmonic field can be avoided the adverse effect of brushless direct-current linear motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention; Fig. 2 is two mover and the double-stator structure schematic diagram of Fig. 1; Fig. 3 is the cutaway view of the A-A line of Fig. 2; Fig. 4 is that the accurate Halbach array permanent magnet of the high speed mover of Fig. 1 magnetizes mode schematic diagram; Fig. 5 is the three-dimensional structure schematic diagram of Fig. 2.Reference numeral and corresponding name are called: motor center axle 1, end cap 2, support 3, stator support 4, high speed mover 5, external stator 6, armature winding 7, the outer permanent magnet 8 of high speed mover, the outer iron yoke 9 of high speed mover, damping winding 10, stainless steel is every magnetic cylinder 11, high speed mover internal layer iron yoke 12, high speed mover internal layer permanent magnet 13, internal stator 14, adjustable magnetic ring iron core 15, non-magnet material 16, low speed mover 17, low speed rotor permanent magnet 18, low speed mover iron yoke 19, outer air gap 20, intermediate layer air gap 21, internal layer air gap 22, low speed mover side connecting rod 23, high speed mover side connecting rod 24.
Embodiment
As shown in Figure 1, drum type brake straight line magnetic gear composite magnetoelectric machine, comprise a brushless direct-current linear motor and a straight line magnetic-gear, this composite magnetoelectric machine has double mechanical port, in three layers of gap structure, comprise main armature winding and Auxiliary Damping winding, the bi-directional of electromechanical energy can be realized; Described brushless direct-current linear motor and straight line magnetic-gear all adopt cylinder mode coaxially integrated, namely form the two Structure of mover of bimorph transducer by the low speed mover 17 and internal stator 14 that form magnetic-gear with the high speed mover 5 and external stator 6 that form brushless direct-current linear motor.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, described low speed mover 17 draws low speed side mover connecting rod 23; Described high speed mover 5 draws high-speed side mover connecting rod 24; A kind of adjustable magnetic stator with magnetic field modulation effect that described internal stator 14 is alternately made up of high permeability material and non-magnet material, and adjustable magnetic stator must be between high, low speed mover; Described low speed mover 17 is made up of pole low speed rotor permanent magnet 18 internal layer unshakable in one's determination 19 and P1, and adjacent permanent magnet polarity is contrary; Described high speed mover 5 has double-deck magnet structure feature, be made up of every magnetic cylinder 11, high speed mover internal layer unshakable in one's determination 12 and high speed mover internal layer permanent magnet 13 the outer permanent magnet 8 of high speed mover, the outer iron core 9 of high speed mover, damping winding 10, stainless steel, the outer permanent magnet 8 of high speed mover and high speed mover internal layer permanent magnet 13 form pole permanent magnet by P2, P1> P2, and adjacent permanent magnet polarity is contrary; Described adjustable magnetic stator is alternately made up of Ns block iron core and Ns block non-magnet material, and Ns=P1+P2; The gear ratio K of high, low speed mover is the ratio of the magnetic pole logarithm of two movers, i.e. K=P1/P2.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, the outer permanent magnet 8 of described high speed mover, high speed mover internal layer permanent magnet 13, low speed rotor permanent magnet 18 all adopt accurate Halbach array to magnetize mode, and the magnetic circuit of the outer permanent magnet 8 of high speed mover and high speed mover internal layer permanent magnet 13 shields mutually, is independent of each other.In actual applications, due to the consecutive variations of the magnetizing direction of permanent magnet cannot be realized, here the accurate Halbach array adopting radial arrays, oblique array to combine with axial array magnetizes mode, is stitched together by discrete magnetic patch and obtains the effect that near sinusoidal magnetizes.The accurate Halbach array structure that magnetizes has good self-shielding effect, and can produce the magnetostatic field larger than remnant field intensity level, thus improves the power density of motor.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 5, drum type brake straight line magnetic gear composite magnetoelectric machine of the present invention, comprises double winding, and described high speed mover outer unshakable in one's determination 9 embeds damping winding 10, as auxiliary winding; External stator 6 is arranged armature winding 7, as main winding.
As shown in Figure 1, drum type brake straight line magnetic gear composite magnetoelectric machine of the present invention, when working as motor, high-speed side mover connecting rod 24 can be saved, pass into three-phase alternating current at armature winding 7, the effect high speed mover 5 by electromagnetic force produces rectilinear motion, by the magnetic field modulation effect of internal stator 14, low speed mover 17 also produces rectilinear motion, and low speed side mover connecting rod 23 realizes low-speed high-thrust and exports; When as generator operation, external prime mover promotes low speed mover 17 rectilinear motion by low speed side mover connecting rod 23, by the magnetic field modulation effect of internal stator 14, high-speed side mover moves thereupon, thus in armature winding, produce induced potential, powering load or by convertor assembly realize be incorporated into the power networks.
Drum type brake straight line magnetic gear composite magnetoelectric machine of the present invention can as motor or generator operation, when working as motor, to be powered to external stator armature winding 7 by variable frequency power supply and the speed realizing high speed mover regulates, according to the no-load voltage ratio relation of magnetic-gear, interior mover speed is conditioned thereupon, now, low speed mover side connecting rod 23 produces low speed, high thrust exports.When as generator operation, low speed mover side connecting rod 23 is driven by external prime mover, utilizes the coupled relation of magnetic-gear, drives high speed mover 5 to move, thus in armature winding 7, produces induced electromotive force, output AC electric energy.
For achieving the above object, the present invention by the following technical solutions: by drum type brake brushless direct-current linear motor and straight line magnetic gear coaxially integrated, and introduce damping winding or sliver in high-speed side mover core.
In order to reduce the overall weight of motor, central shaft adopts the hollow non-magnet material of lighter weight, can reduce the machinery inertial of mover, advantageously in starting and the accelerator of motor.
This motor permanent magnet adopts surface-mount type structure, damage because the permanent magnet on mover is easily subject to axial mechanical stress effect in reciprocatory movement, magnetic property is caused to decline, cause motor performance unstable, even reduce the life-span, therefore, mover adopts thimble structure, make thin cylinder by high-strength metal material, be tightly placed in mover cylindrical place, by sleeve, permanent magnet be fixed on due position.The mechanics feature of sleeve is, it contain under the inner each assembly of mover, in whole velocity interval, be all in compressive state.Especially to high-speed side mover, the mechanical strength in running is guaranteed.
Claims (5)
1. drum type brake straight line magnetic gear composite magnetoelectric machine, comprise a brushless direct-current linear motor and a straight line magnetic-gear, it is characterized in that: this composite magnetoelectric machine has double mechanical port, in three layers of gap structure, comprise main armature winding and Auxiliary Damping winding, the bi-directional of electromechanical energy can be realized; Described brushless direct-current linear motor and straight line magnetic-gear all adopt cylinder mode coaxially integrated, namely form the two Structure of mover of bimorph transducer by the low speed mover (17) and internal stator (14) that form magnetic-gear with the high speed mover (5) and external stator (6) that form brushless direct-current linear motor.
2. drum type brake straight line magnetic gear composite magnetoelectric machine according to claim 1, is characterized in that described low speed mover (17) draws low speed side mover connecting rod (23); Described high speed mover (5) draws high-speed side mover connecting rod (24); A kind of adjustable magnetic stator with magnetic field modulation effect that described internal stator (14) is alternately made up of high permeability material and non-magnet material, and adjustable magnetic stator must be between high, low speed mover; Described low speed mover (17) is made up of pole low speed rotor permanent magnet (18) internal layer iron core (19) and P1, and adjacent permanent magnet polarity is contrary; Described high speed mover (5) has double-deck magnet structure feature, be made up of every magnetic cylinder (11), high speed mover internal layer iron core (12) and high speed mover internal layer permanent magnet (13) the outer permanent magnet (8) of high speed mover, high speed mover outer (9), damping winding (10) unshakable in one's determination, stainless steel, the outer permanent magnet (8) of high speed mover and high speed mover internal layer permanent magnet (13) form pole permanent magnet by P2, P1> P2, and adjacent permanent magnet polarity is contrary; Described adjustable magnetic stator is alternately made up of Ns block iron core and Ns block non-magnet material, and Ns=P1+P2; The gear ratio K of high, low speed mover is the ratio of the magnetic pole logarithm of two movers, i.e. K=P1/P2.
3. drum type brake straight line magnetic gear composite magnetoelectric machine according to claim 1, it is characterized in that the outer permanent magnet (8) of described high speed mover, high speed mover internal layer permanent magnet (13), low speed rotor permanent magnet (18) all adopt accurate Halbach array to magnetize mode, and the magnetic circuit of the outer permanent magnet (8) of high speed mover and high speed mover internal layer permanent magnet (13) shields mutually, is independent of each other.
4. drum type brake straight line magnetic gear composite magnetoelectric machine according to claim 2, comprises double winding, it is characterized in that described high speed mover outer (9) unshakable in one's determination embeds damping winding (10), as auxiliary winding; External stator (6) is arranged armature winding (7), as main winding.
5. drum type brake straight line magnetic gear composite magnetoelectric machine according to claim 2, when working as motor, high-speed side mover connecting rod (24) can be saved, three-phase alternating current is passed at armature winding (7), by the effect of electromagnetic force, high speed mover (5) produces rectilinear motion, by the magnetic field modulation effect of internal stator (14), low speed mover (17) also produces rectilinear motion, and low speed side mover connecting rod (23) realizes low-speed high-thrust and exports; When as generator operation, external prime mover promotes low speed mover (17) rectilinear motion by low speed side mover connecting rod (23), by the magnetic field modulation effect of internal stator (14), high-speed side mover moves thereupon, thus in armature winding, produce induced potential, powering load or by convertor assembly realize be incorporated into the power networks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510327369.8A CN104883027A (en) | 2015-06-15 | 2015-06-15 | Cylindrical-type linear magnetic-gear composite permanent magnet motor |
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| CN201510327369.8A CN104883027A (en) | 2015-06-15 | 2015-06-15 | Cylindrical-type linear magnetic-gear composite permanent magnet motor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871323A (en) * | 2016-05-18 | 2016-08-17 | 东南大学 | Intelligent dirt removal and ice melting device for solar panel |
| CN106849573A (en) * | 2017-03-30 | 2017-06-13 | 哈尔滨工业大学 | Double acting sub- double winding cylindrical linear generator based on magnetic field modulation principle |
| CN107565793A (en) * | 2017-11-01 | 2018-01-09 | 北京航空航天大学 | A kind of cylinder type voice coil motor with MULTILAYER COMPOSITE Halbach array of magnetic dipoles |
| CN109361305A (en) * | 2018-12-12 | 2019-02-19 | 宋局 | A kind of structure of Dual-conjugate bar type linear motor |
| CN110336448A (en) * | 2019-05-07 | 2019-10-15 | 苏州大学 | Straight line locating platform and straight line positioning system based on Magnetic drive |
| CN111911385A (en) * | 2020-08-19 | 2020-11-10 | 成都微精电机股份公司 | Double-rotor linear compressor |
| US20210044191A1 (en) * | 2019-08-07 | 2021-02-11 | Linear Labs, Inc. | Linear machine |
| CN112910126A (en) * | 2019-11-18 | 2021-06-04 | 博特斯卡普印度私人有限公司 | Method for increasing magnetic field by using multi-pole annular magnet in brushless permanent magnet motor |
| WO2022261995A1 (en) * | 2021-06-17 | 2022-12-22 | 江苏大学 | Steering suspension integrated five-phase permanent-magnet fault-tolerant actuator and two-phase open-circuit fault-tolerant direct torque control method therefor |
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| CN102035320A (en) * | 2010-12-28 | 2011-04-27 | 上海大学 | Direct drive type sinusoidal magnetic field composite permanent magnet motor |
| CN103807085A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Wave power generation device based on linear magnetic gear motor |
| CN104061116A (en) * | 2014-06-12 | 2014-09-24 | 东南大学 | Wave energy power generating device based on serial connection linear magnetic gear motor |
| CN204681230U (en) * | 2015-06-15 | 2015-09-30 | 兰州理工大学 | A kind of drum type brake straight line magnetic gear composite magnetoelectric machine |
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Patent Citations (5)
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| CN201549978U (en) * | 2009-08-19 | 2010-08-11 | 东南大学 | Linear generator with magnetic gear for wave power generation |
| CN102035320A (en) * | 2010-12-28 | 2011-04-27 | 上海大学 | Direct drive type sinusoidal magnetic field composite permanent magnet motor |
| CN103807085A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Wave power generation device based on linear magnetic gear motor |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871323A (en) * | 2016-05-18 | 2016-08-17 | 东南大学 | Intelligent dirt removal and ice melting device for solar panel |
| CN106849573B (en) * | 2017-03-30 | 2020-07-24 | 哈尔滨工业大学 | Double-rotor double-winding cylindrical linear generator based on magnetic field modulation principle |
| CN106849573A (en) * | 2017-03-30 | 2017-06-13 | 哈尔滨工业大学 | Double acting sub- double winding cylindrical linear generator based on magnetic field modulation principle |
| CN107565793A (en) * | 2017-11-01 | 2018-01-09 | 北京航空航天大学 | A kind of cylinder type voice coil motor with MULTILAYER COMPOSITE Halbach array of magnetic dipoles |
| CN107565793B (en) * | 2017-11-01 | 2019-05-17 | 北京航空航天大学 | A kind of cylinder type voice coil motor with MULTILAYER COMPOSITE Halbach array of magnetic dipoles |
| CN109361305A (en) * | 2018-12-12 | 2019-02-19 | 宋局 | A kind of structure of Dual-conjugate bar type linear motor |
| CN110336448A (en) * | 2019-05-07 | 2019-10-15 | 苏州大学 | Straight line locating platform and straight line positioning system based on Magnetic drive |
| US20210044191A1 (en) * | 2019-08-07 | 2021-02-11 | Linear Labs, Inc. | Linear machine |
| CN112910126A (en) * | 2019-11-18 | 2021-06-04 | 博特斯卡普印度私人有限公司 | Method for increasing magnetic field by using multi-pole annular magnet in brushless permanent magnet motor |
| CN111911385A (en) * | 2020-08-19 | 2020-11-10 | 成都微精电机股份公司 | Double-rotor linear compressor |
| CN111911385B (en) * | 2020-08-19 | 2022-04-29 | 成都微精电机股份公司 | Double-rotor linear compressor |
| WO2022261995A1 (en) * | 2021-06-17 | 2022-12-22 | 江苏大学 | Steering suspension integrated five-phase permanent-magnet fault-tolerant actuator and two-phase open-circuit fault-tolerant direct torque control method therefor |
| GB2610788A (en) * | 2021-06-17 | 2023-03-15 | Univ Jiangsu | Steering suspension integrated five-phase permanent-magnet fault-tolerant actuator and two-phase open-circuit fault-tolerant direct torque control method |
| GB2610788B (en) * | 2021-06-17 | 2023-12-27 | Univ Jiangsu | Steering suspension integrated five-phase permanent-magnet fault-tolerant actuator and two-phase open-circuit fault-tolerant direct torque control method |
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Application publication date: 20150902 |