CN105634193A - Magnetic gear based rotating-linear variable speed motor - Google Patents
Magnetic gear based rotating-linear variable speed motor Download PDFInfo
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- CN105634193A CN105634193A CN201610113864.3A CN201610113864A CN105634193A CN 105634193 A CN105634193 A CN 105634193A CN 201610113864 A CN201610113864 A CN 201610113864A CN 105634193 A CN105634193 A CN 105634193A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
Abstract
The invention discloses a magnetic gear based rotating-linear variable speed motor. The motor comprises a stator armature, a high-speed permanent magnet rotor, a magnetic field adjusting apparatus and a low-speed permanent magnet mover, wherein the stator armature comprises a stator iron core and an armature winding; the high-speed permanent magnet rotor comprises a rotor iron core and a permanent magnet built in the iron core; the magnetic field adjusting apparatus comprises irregular bodies formed by ferromagnetic materials and non-ferromagnetic materials that are arranged at intervals; the low-speed permanent magnet mover comprises a mover iron core and a permanent magnet adhered to the surface of the iron core. The motor can be taken as the shunt-wound coupling of a permanent magnet synchronous motor and a rotating-linear conversion type magnetic gear.
Description
Technical field
The invention belongs to electrician, machine field, it relates to a kind of rotation-straight line change speed motor.
Background technology
In renewable energy source exploitation process, wave energy, tidal energy more and more receive the concern of experts and scholars. For wave generating, because of the feature of wave motion, all adopted low speed electric machine design, there is the problems such as power density is low, efficiency is low, cost height in the power generation system being made up of low-speed generator and floating drum in the past, is unfavorable for that the commercialization that wave generates electricity is promoted. After being caught by the Wave energy of low-speed rectilinear movement, if can raising speed be high speed rotary motion, adopt high-speed permanent magnetic synchronous generator can obtain higher power density and the good quality of power supply.
In addition, needing the occasion (such as mechanical workout etc.) that high speed rotary motion is converted to low-speed rectilinear movement, the mechanical drives such as rack and pinion engagement are more adopted to realize the conversion between two kinds of mode of motion, except needing to increase extra intermediate gearing, the power loss thus brought also affects the efficiency of whole system.
Summary of the invention
Technical problem: the present invention provides a kind of rotation based on magnetic gear-straight line change speed motor, combines permanent-magnet synchronous motor and rotation-straight line changing type magnetic gear. Adopt this motor as the system of energy conversion, do not need extra mechanical drive, directly can being realized the function of straight line-rotation two kinds of motion mode-conversion and speed transformation by electromagnetic coupled so that the volume mass of whole system reduces, cost reduces, efficiency improves.
Technical scheme: the rotation based on magnetic gear of the present invention-straight line change speed motor, to the stator armature arranged successively outward, high-speed permanent magnetic rotor, magnetic regulating device, low-speed permanent-magnet mover in comprising. Stator armature comprises stator core, armature winding in the fluting that is placed on stator core outside surface; Described high-speed permanent magnetic rotor is arranged around stator armature (1), comprises high-speed permanent magnetic rotor iron core, is embedded in the high speed rotor permanent magnet of described high-speed permanent magnetic rotor core interior; Described magnetic regulating device is made up of A ferromagnetic pole piece and the arrangement of non-ferromagnetic material interval; Described low-speed permanent-magnet mover comprises low-speed permanent-magnet mover iron core and is pasted on the low speed rotor permanent magnet on described low-speed permanent-magnet mover iron core surface; The first layer air gap is formed between described stator armature and high-speed permanent magnetic rotor; Second layer air gap is formed between high-speed permanent magnetic rotor and magnetic regulating device; Third layer air gap is formed between the low speed rotor permanent magnet of magnetic regulating device and low-speed permanent-magnet mover.
Further, in motor of the present invention, stator armature and high-speed permanent magnetic rotor adopt circular rotating structure; Magnetic regulating device is the curved surface concentric with stator armature and high-speed permanent magnetic rotor towards the internal surface of high-speed permanent magnetic rotor, and outside surface is the two dimensional structure parallel with low-speed permanent-magnet mover; Low-speed permanent-magnet mover is flat plate type linear formula structure.
The rotation based on magnetic gear of the present invention-straight line change speed motor, it is possible to regard permanent-magnet synchronous motor and the coupling of rotation-straight line changing type magnetic gear as. Further, in motor of the present invention, stator armature and high-speed permanent magnetic rotor are as synchronous magnetoelectric machine; High-speed permanent magnetic rotor, magnetic regulating device and low-speed permanent-magnet mover are as rotary-linear type magnetic gear. High-speed permanent magnetic rotor has dual-use function, is the rotor of synchronous magnetoelectric machine, is also the high-speed moving part of magnetic wheelwork.
Further, motor of the present invention adopts permanent-magnet synchronous motor and rotation-straight line changing type magnetic gear parallel coupled mode.
Further, in motor of the present invention, it is the three-phase alternating current of f that armature winding leads to into frequency, and the total magnetic pole logarithm of high-speed permanent magnetic rotor is p, then the speed of rotation of high-speed permanent magnetic rotor is Nh=60f/p, wherein p=Nph, (N >=2), phFor the effective magnetic pole logarithm that high-speed permanent magnetic rotor plays a role in magnetic gear structure.
Further, in motor of the present invention, high-speed permanent magnetic rotor, magnetic regulating device and low-speed permanent-magnet mover realize the speed changing function of magnetic gear, are also the keys of rotation-translational motion form conversion. The effective magnetic pole logarithm that high-speed permanent magnetic rotor plays a role in magnetic gear structure is ph, in magnetic regulating device, A ferromagnetic pole piece number is ps, the effective magnetic pole logarithm of low-speed permanent-magnet rotor is pl, three meets ps=ph+pl,(pl> ph)��
Further, in motor of the present invention, magnetic regulating device is fixed, and the high-speed permanent magnetic rotor of rotation-straight line changing type magnetic gear and the ratio (abbreviation speed ratio) of low-speed permanent-magnet rotor operation speed are Gr=pl/ph��
Further, in motor of the present invention, three-phase alternating current leads to into armature winding by slip ring, and generation synchronous speed is NhRotatingfield, promote high-speed permanent magnetic rotor with NhHigh speed rotating, the magnetic field of high speed rotor, after the modulation of magnetic regulating device, is formed and low speed mover effective magnetic pole logarithm plIdentical low speed travelling-magnetic-field, thus draw low-speed permanent-magnet mover and do linear reciprocating motion, travelling speed is Nl=Nh/Gr��
Being in motor-operated running state for motor of the present invention: in stator armature, armature winding leads to into frequency is the three-phase alternating current of f, the total permanent magnet pole logarithm of high-speed permanent magnetic rotor is p (wherein p=Nph, (N >=2), phFor the effective magnetic pole logarithm that high-speed permanent magnetic rotor plays a role in magnetic gear structure), then the speed of rotation of high-speed permanent magnetic rotor is Nh=60f/p. The magnetic field of high-speed permanent magnetic rotor, after the modulation of magnetic regulating device, forms the low speed travelling-magnetic-field identical with low speed mover effective magnetic pole logarithm pl, thus draws low-speed permanent-magnet mover and do reciprocating linear operation, and travelling speed is Nl=Nh/Gr��
If motor of the present invention is in generator operation state, can be applicable to the new energy developments such as wave-energy power generation and utilize field, the low-speed rectilinear movement of wave is changed into high speed rotary motion, thus promote high-speed permanent magnetic synchronous generator, it is to increase system power-density; If this motor is in motor-operated running state, rotary motion at a high speed can be converted to the straight reciprocating motion of low speed, can be applicable to the fields such as mechanical workout. Motor of the present invention leads to into three-phase alternating current in its armature winding, forms circular rotating magnetic field in air gap, promotes high-speed permanent magnetic rotor to rotate with synchronous speed. The magnetic field of high speed rotor is by, after the modulating action of magnetic regulating device, forming the low speed travelling-magnetic-field identical with low speed mover effective magnetic pole logarithm, thus draw low-speed permanent-magnet mover and do linear reciprocating motion. The high speed rotary motion of permanent-magnetic synchronous motor rotor is transformed to the speed straight line to-and-fro movement of permanent magnetic rotor by whole process. The motor that the present invention announces does not need rack and pinion engagement, decreases mechanical drive and relevant power loss, relies on electromagnetism transform to realize noncontact formula speed change and the torque-thrust transmission of rotation-straight line two kinds of mode of motion completely.
Useful effect: the present invention compared with prior art, has the following advantages:
(1) rotation-straight line changing type magnetic gear can realize the speed changing function under rotation-straight line two kinds of motion patterns. It has untouchable feature, has between mechanical abrasion, low noise, movable parts the advantages such as physical insulation. Transmit torque/thrust by magnetic field between the high-speed moving part of magnetic gear and low-speed motion parts, complete the function of speed change, it is not necessary to mechanical transmission mechanism, eliminate the loss thus brought.
(2) if the rotation based on magnetic gear of the present invention-straight line change speed motor uses as generator, it is applied in wave energy, tidal power generation system, there is good application prospect. The movement characteristic of wave determines many employing low speed electric machine design in wave power generation system, and this kind of design unavoidably exists the problems such as multipole, volume is big, cost height, system efficiency are low. If by the function of the speed change of rotation-straight line changing type magnetic gear and conversion motion pattern, realize by the speedup pattern of low speed mover straight reciprocating motion to high speed rotor rotating operation, just can overcome inferior position, form the system that power density is bigger, generating efficiency is higher.
(3) if running in motoring condition by the motor in the present invention, in stator armature, armature winding leads to into frequency is the three-phase alternating current of f, and the total permanent magnet pole logarithm of high-speed permanent magnetic rotor is p (wherein p=Nph, (N >=2), phFor the effective magnetic pole logarithm that high-speed permanent magnetic rotor plays a role in magnetic gear structure), then the speed of rotation of high-speed permanent magnetic rotor is Nh=60f/p. The magnetic field of high-speed permanent magnetic rotor, after the modulation of magnetic regulating device, is formed and low speed mover effective magnetic pole logarithm plIdentical low speed travelling-magnetic-field, thus draw low-speed permanent-magnet mover and do reciprocating linear operation, travelling speed is Nl=Nh/Gr. The high speed rotary motion of permanent-magnetic synchronous motor rotor is transformed to the low-speed high-thrust straight reciprocating motion of permanent magnetic rotor by whole process, will have good development potentiality in field of machining.
Accompanying drawing explanation
Fig. 1 is the rotation based on the magnetic gear-straight line change speed motor schematic diagram of the present invention;
Number in the figure, 1-stator armature; 2-high-speed permanent magnetic rotor; 3-magnetic regulating device; 4-low-speed permanent-magnet mover; 5-the first layer air gap; 6-second layer air gap; 7-third layer air gap; 11-stator core; 12-armature winding; 21-high-speed permanent magnetic rotor iron core; 22-high-speed permanent magnetic rotor permanent magnet; 31-A ferromagnetic pole piece; The non-ferromagnetic material of 32-; 41-low-speed permanent-magnet mover iron core; 41-low-speed permanent-magnet rotor permanent magnet.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is further illustrated.
Rotation based on magnetic gear of the present invention-straight line change speed motor is made up of four major portions, is set to successively from inside to outside: stator armature 1, high-speed permanent magnetic rotor 2, magnetic regulating device 3, low-speed permanent-magnet mover 4. Wherein, the armature winding 12 that stator armature 1 comprises stator core 11 and places in stator core 11 outside surface is slotted; Described high-speed permanent magnetic rotor 2 comprises high-speed permanent magnetic rotor iron core 21 and is embedded in the high speed rotor permanent magnet 22 of described high-speed permanent magnetic rotor iron core 21 inside; Described magnetic regulating device 3 comprises A ferromagnetic pole piece 31 and non-ferromagnetic material 32 irregular body interval ordered arrangement is formed; Described low-speed permanent-magnet mover 4 comprises low-speed permanent-magnet mover iron core 41 and is pasted on the low speed rotor permanent magnet 42 on described low-speed permanent-magnet mover iron core 41 surface.
Rotation based on magnetic gear of the present invention-straight line change speed motor has three layers of air gap, is followed successively by from inside to outside: form the first layer air gap 5 between described stator armature 1 and high-speed permanent magnetic rotor 2; Second layer air gap 6 is formed between high-speed permanent magnetic rotor 2 and magnetic regulating device 3; Third layer air gap 7 is formed between magnetic regulating device 3 and low-speed permanent-magnet mover 4.
Rotation based on magnetic gear of the present invention-straight line change speed motor, it is possible to regard permanent-magnet synchronous motor and the coupling of rotation-straight line conversion magnetic gear as. Stator armature 1 and high-speed permanent magnetic rotor 2 can be used as synchronous magnetoelectric machine; High-speed permanent magnetic rotor 2, magnetic regulating device 3 and low-speed permanent-magnet mover 4 can be used as rotary-linear type magnetic gear. High-speed permanent magnetic rotor 2 as total parts has dual-use function, is the rotor of synchronous magnetoelectric machine, is also the high-speed moving part of magnetic wheelwork.
Rotation based on magnetic gear of the present invention-straight line change speed motor, stator armature 1 and high-speed permanent magnetic rotor 2 adopt circular rotating structure; Magnetic regulating device 3 internal surface is the curved surface concentric with stator armature 1 and high-speed permanent magnetic rotor 2, and outside surface is the two dimensional structure parallel with low-speed permanent-magnet mover 4; Low-speed permanent-magnet mover 4 is flat plate type linear formula structure.
Further, in motor of the present invention, high-speed permanent magnetic rotor, magnetic regulating device and low-speed permanent-magnet mover realize the speed changing function of magnetic gear, are also the keys of rotation-translational motion form conversion. The effective magnetic pole logarithm of high-speed permanent magnetic rotor is ph, in magnetic regulating device, A ferromagnetic pole piece number is ps, the effective magnetic pole logarithm of low-speed permanent-magnet rotor is pl, three meets ps=ph+pl,(pl> ph). If magnetic regulating device is fixed, the high-speed permanent magnetic rotor of rotation-straight line changing type magnetic gear and the ratio (abbreviation speed ratio) of low-speed permanent-magnet rotor operation speed are Gr=pl/ph��
Further, it is in motor-operated running state for motor of the present invention: in stator armature, armature winding leads to into frequency is the three-phase alternating current of f, the total permanent magnet pole logarithm of high-speed permanent magnetic rotor is p (wherein p=Nph, (N >=2), phFor the effective magnetic pole logarithm that high-speed permanent magnetic rotor plays a role in magnetic gear structure), then the speed of rotation of high-speed permanent magnetic rotor is Nh=60f/p. The magnetic field of high-speed permanent magnetic rotor, after the modulation of magnetic regulating device, is formed and low speed mover effective magnetic pole logarithm plIdentical low speed travelling-magnetic-field, thus draw low-speed permanent-magnet mover and do reciprocating linear operation, travelling speed is Nl=Nh/Gr��
It is illustrated with specific examples below: the magnetic pole logarithm p=6 that high-speed permanent magnetic rotor is total, N=3, then the effective magnetic pole logarithm p that high-speed permanent magnetic rotor plays a role in magnetic gear structureh=2. The effective magnetic pole logarithm p of low-speed permanent-magnet mover in rotation-straight line changing type magnetic gearl=5, then according to ps=ph+pl, the number p of A ferromagnetic pole piece in magnetic regulating devices=7, the speed ratio G of magnetic gearr=pl/ph=5/2=2.5.
Further, in described high-speed permanent magnetic rotor, the make of permanent magnet has two kinds: first permanent magnet is embedded in core interior, adopts the radial magnetizing permanent magnetism body of homopolarity; Its two be permanent magnet respectively Surface Mount in the inside and outside surface of rotor iron core; Permanent magnet N pole and S pole are alternately along the circumferential direction uniformly distributed;
Preferably, make by common silicon steel plate stacking based on stator core, high-speed permanent magnetic rotor iron core, Flux modulation A ferromagnetic pole piece, low-speed permanent-magnet mover iron core in the rotation-straight line change speed motor of magnetic gear.
Preferably, NdFeB material is all adopted based on permanent magnet in the rotation-straight line change speed motor of magnetic gear.
Preferably, based on magnetic gear rotation-straight line change speed motor armature winding adopt double-deck distributed winding.
Above-described embodiment is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention; some improvement and equivalent replacement can also be made; the claims in the present invention are improved and are equal to the technical scheme after replacing by these, all fall into protection scope of the present invention.
Claims (7)
1. the rotation based on magnetic gear-straight line change speed motor, it is characterized in that, this motor comprises and arranges stator armature (1), high-speed permanent magnetic rotor (2), magnetic regulating device (3), low-speed permanent-magnet mover (4) from the inside to the outside successively, and described stator armature (1) comprises stator core (11), armature winding (12) in the fluting that is placed on described stator core (11) outside surface; Described high-speed permanent magnetic rotor (2) is arranged around stator armature (1), comprises high-speed permanent magnetic rotor iron core (21), high speed rotor permanent magnet (22) that to be embedded in described high-speed permanent magnetic rotor iron core (21) inner; Described magnetic regulating device (3) is spaced by pole piece (31) and non-ferromagnetic material (32) and forms; Described low-speed permanent-magnet mover (4) comprises low-speed permanent-magnet mover iron core (41) and is pasted on the low speed rotor permanent magnet (42) on described low-speed permanent-magnet mover iron core (41) surface; The first layer air gap (5) is formed between described stator armature (1) and high-speed permanent magnetic rotor (2); Second layer air gap (6) is formed between described high-speed permanent magnetic rotor (2) and magnetic regulating device (3); Third layer air gap (7) is formed between the low speed rotor permanent magnet (42) of described magnetic regulating device (3) and low-speed permanent-magnet mover (4).
2. the rotation based on magnetic gear according to claim 1-straight line change speed motor, it is characterised in that, described stator armature (1) and high-speed permanent magnetic rotor (2) adopt circular rotating structure; Described magnetic regulating device (3) is the curved surface concentric with stator armature (1) and high-speed permanent magnetic rotor (2) towards the internal surface of high-speed permanent magnetic rotor (2), and outside surface is the two dimensional structure parallel with low-speed permanent-magnet mover (4); Described low-speed permanent-magnet mover (4) is flat plate type linear formula structure.
3. the rotation based on magnetic gear according to claim 1-straight line change speed motor, it is characterised in that, described stator armature (1) and high-speed permanent magnetic rotor (2) are as synchronous magnetoelectric machine; Described high-speed permanent magnetic rotor (2), magnetic regulating device (3) and low-speed permanent-magnet mover (4) are as rotary-linear type magnetic gear, described high-speed permanent magnetic rotor (2) has dual-use function, it is the rotor of synchronous magnetoelectric machine, also it is the high-speed moving part of magnetic wheelwork.
4. the rotation based on magnetic gear-straight line change speed motor according to claim 1,2 or 3, it is characterized in that, in described stator armature (1), it is the three-phase alternating current of f that armature winding (12) leads to into frequency, the total magnetic pole logarithm of high-speed permanent magnetic rotor (2) is p, then the speed of rotation of high-speed permanent magnetic rotor (2) is Nh=60f/p, wherein p=Nph, (N >=2), phFor the effective magnetic pole logarithm that high-speed permanent magnetic rotor (2) plays a role in magnetic gear structure.
5. the rotation based on magnetic gear-straight line change speed motor according to claim 1,2 or 3, it is characterised in that, the effective magnetic pole logarithm that described high-speed permanent magnetic rotor (2) plays a role in magnetic gear structure is ph, in described magnetic regulating device (3), A ferromagnetic pole piece number is ps, the effective magnetic pole logarithm of low-speed permanent-magnet rotor (4) is pl, three meets ps=ph+pl,(pl��ph)��
6. the rotation based on magnetic gear according to claim 5-straight line change speed motor, it is characterized in that, described magnetic regulating device (3) is fixed, and the ratio of described high-speed permanent magnetic rotor (2) and low-speed permanent-magnet mover (4) travelling speed is Gr=pl/ph��
7. the rotation based on magnetic gear-straight line change speed motor according to claim 1,2 or 3, it is characterised in that: three-phase alternating current is led to into armature winding (12) by slip ring, and generation synchronous speed is NhRotatingfield, promote high-speed permanent magnetic rotor (2) with NhHigh speed rotating, the magnetic field of high speed rotor, after the modulation of magnetic regulating device (3), is formed and low speed mover effective magnetic pole logarithm plIdentical low speed travelling-magnetic-field, thus draw low-speed permanent-magnet mover and do linear reciprocating motion, travelling speed is Nl=Nh/Gr��
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| CN201610113864.3A CN105634193A (en) | 2016-02-29 | 2016-02-29 | Magnetic gear based rotating-linear variable speed motor |
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| CN201610113864.3A CN105634193A (en) | 2016-02-29 | 2016-02-29 | Magnetic gear based rotating-linear variable speed motor |
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| CN106026514A (en) * | 2016-07-14 | 2016-10-12 | 江苏华源防爆电机有限公司 | Driving magnetic gear combined motor of hybrid electric vehicle |
| CN114414414A (en) * | 2022-01-11 | 2022-04-29 | 燕山大学 | Reciprocating linear experiment machine based on magnetic field modulation type gear rack and working process thereof |
| CN117060607A (en) * | 2023-09-01 | 2023-11-14 | 鲁东大学 | Variable-speed permanent magnet linear generator for wave power generation |
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Application publication date: 20160601 |