CN102969812B - Modulation ring rotor based on magnetic shielding principle - Google Patents
Modulation ring rotor based on magnetic shielding principle Download PDFInfo
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- CN102969812B CN102969812B CN201210543589.0A CN201210543589A CN102969812B CN 102969812 B CN102969812 B CN 102969812B CN 201210543589 A CN201210543589 A CN 201210543589A CN 102969812 B CN102969812 B CN 102969812B
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Abstract
The invention discloses a modulation ring rotor based on a magnetic shielding principle, belongs to the field of a permanent magnet motor, and aims at solving the problem that the existing modulation ring rotor can not consider both low loss and high mechanical strength. The modulation ring rotor comprises two end rings, n magnetic blocks and n connecting rods, wherein a plurality of through holes are uniformly formed in the end surfaces of the end rings along the periphery direction; a plurality of screw holes are uniformly formed in one end surface of the end rings; the two end rings are arranged in parallel; the screw hole sides of the end rings are arranged back to back; the positions of the through holes in the two end rings are opposite one by one; the n magnetic blocksare arranged between the two end rings; each magnetic block is fixed with the two end rings together through one connecting rod; a cylindrical screw is arranged at each end of a body of each connecting rod; the body of each connecting rod is embedded in the magnetic block; the screws at the two ends of the body of the connecting rod respectively penetrate through the through holes; and each screw is fixedly provided with a nut for clamping the end rings and the magnetic blocks.
Description
Technical field
The present invention relates to the modulation rotor based on magnetic field shielding principle, belong to magneto field.
Background technology
Brushless double-rotor machine based on magnetic field modulation principle has two rotating speed rotors independent of each other and rotating shaft, can realize twin shaft drive.It has solved has in brush double-rotor machine in the past, because the operational efficiency that adopts electric brush slip ring structure to cause declines, reliability reduces and the frequent maintenance issues of needs, and with the heating of armature winding rotor seriously and dynamic equilibrium problems.Therefore, in occasions such as electric automobile, wind power generation, torpedo propellings, have broad application prospects.
The operation principle of this brushless double-rotor machine based on magnetic field modulation principle has been to elaborate in ZL201010274167.9, ZL201010274160.7, ZL 201010274156.0, ZL201010274135.9, ZL201010274669.1, ZL201010274337.3, ZL201010274329.9, ZL201010274325.0 in the patent No..By known to the analysis of this machine operation principle, can realize the core component of this machine operation and modulate exactly rotor.On theory analysis, modulate rotor and be by magnetic inductive block and non-magnetic and form, its effect is: on the one hand the permanent magnetic field of p-m rotor is modulated into the magnetic field identical with stator armature field pole logarithm, thereby produces torque with stator armature magnetic fields; On the other hand stator armature magnetic field modulation is become to the magnetic field identical with the permanent magnetic field number of pole-pairs of p-m rotor, thereby produce torque with the permanent magnetic field effect of p-m rotor.Therefore, can find out that modulation rotor is the key point that realizes this brushless double-rotor machine work based on magnetic field modulation principle.
In actual electric machine structure, magnetic inductive block is to consist of permeability magnetic material, and non-magnetic is to consist of non-magnet material.Permeability magnetic material can be selected the good materials of magnetic property such as silicon steel sheet, solid-iron, soft-magnetic composite material, soft magnetic ferrite; Non-magnet material can be selected air or epoxy resin, the non-magnet material such as magnetic conduction steel not.And the magnetic inductive block forming with current permeability magnetic material in modulation rotor all can produce loss under motor-field effect, the loss that different permeability magnetic materials produce is different, under same volume, by silicon steel material, formed the loss minimum of magnetic inductive block, and by solid-iron material, formed the loss maximum of magnetic inductive block.
And when motor moves, modulation rotor will transmit certain moment of torsion, also to bear the centrifugal force of High Rotation Speed and the magnetic field pulling force that magnetic field produces, therefore modulating rotor will have very high mechanical strength guarantee motor reliability service.
Thereby in service at actual motor, will there is such contradictory problems: otherwise permeability magnetic material used can to make to modulate the loss of rotor very low, but do not possess very high mechanical strength, do not make to modulate rotor and can bear the magnetic field pulling force that centrifugal force that certain moment of torsion, High Rotation Speed produce and magnetic field produce, be just difficult to make this motor carry out practical engineering application yet; Permeability magnetic material used can make to modulate rotor and have very high mechanical strength, thereby but make the loss of modulating rotor greatly reduce very greatly the efficiency of motor, also just limited the application prospect of motor.
Existing modulation rotor cannot be taken into account low-loss and high mechanical properties.
Summary of the invention
The present invention seeks to cannot take into account in order to solve existing modulation rotor the problem of low-loss and high mechanical properties, a kind of modulation rotor based on magnetic field shielding principle is provided.
Modulation rotor based on magnetic field shielding principle of the present invention, it comprises two end ring, a n magnetic inductive block and n connecting rod,
On the end face of end ring, be along the circumferential direction evenly provided with a plurality of through holes, on an end face of end ring, be evenly provided with a plurality of screw holes,
Two end ring be arranged in parallel, and the opposing setting of screw hole side of end ring, and the lead to the hole site in two end ring is relative one by one, and n magnetic inductive block is set between two end ring, and each magnetic inductive block is fixed together with a connecting rod and two end ring,
The shaft two ends of connecting rod arrange respectively a columniform screw rod, and the shaft of connecting rod is embedded in magnetic inductive block inside, and the screw rod that is positioned at shaft two ends passes respectively through hole, are all fixed with nut on each screw rod, and described nut is for clamping end ring and magnetic inductive block;
Wherein, n is positive integer.
Magnetic inductive block is formed by silicon steel plate stacking, laminates direction and the axially parallel of modulating rotor.
The shaft of connecting rod adopts non-magnet material or permeability magnetic material.
Can further include bandage, bandage is fastened on the outer round surface of modulation rotor.
Can further include epoxy resin, epoxy resin fills up the space between end ring and magnetic inductive block.
Advantage of the present invention: in the present invention, silicon steel sheet has advantages of that magnetic property is good and the loss under magnetic fields is little, and when connecting rod consists of non-magnet material, the magnetic field entering thus in magnetic inductive block does not enter connecting rod substantially, and the loss in connecting rod will be very little so.This shows, the extraordinary silicon steel sheet of magnetic property has shielded the magnetic field entering in non-magnet material connecting rod, even if therefore connecting rod is metal material, its loss also can be very little, and the loss that connecting rod adopts metal material that magnetic property is good and non-magnetic metal material is to such as shown in Figure 12 to Figure 15.In Figure 12 to Figure 15, under identical motor conditions, be only that the material of connecting rod is adjusted, can find out: during empty load of motor operation, 1/10 of connecting rod loss when connecting rod loss when connecting rod adopts non-magnet material is about permeability magnetic material; During motor load operation, 1/2 of connecting rod loss when connecting rod loss when connecting rod adopts non-magnet material is about permeability magnetic material.
Structure from the modulation rotor of final formation, silicon steel sheet adopts the mode that laminates of parallel modulation rotor axis to build up magnetic inductive block, and by metal material connecting rod, magnetic inductive block has been formed to there is the very magnetic inductive block unit of high mechanical properties, be key point of the present invention.When connecting rod is non-magnetic conductive metal material formation, by the known such magnetic inductive block of magnetic field shielding principle unit, there is the very little advantage of loss simultaneously.
The present invention adopts the mode that laminates of parallel modulation rotor axis to build up magnetic inductive block by silicon steel sheet, and magnetic inductive block has been formed have the very magnetic inductive block unit of high mechanical properties by metal material connecting rod, thereby and then magnetic inductive block unit and end ring are linked into an integrated entity and be formed with the very modulation rotor of high mechanical properties.On the one hand, make to modulate rotor and there is very high mechanical strength, little this self material advantage of the loss that utilizes on the other hand silicon steel sheet to produce under magnetic fields when connecting rod is non-magnetic conductive metal material while forming, utilizes magnetic field shielding principle to make the loss in connecting rod also very little simultaneously.This makes modulation rotor of the present invention have the little and high advantage of mechanical strength of loss simultaneously, makes this brushless double-rotor machine based on magnetic field modulation principle to practical engineering application, step essential step by theoretical motor model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the modulation rotor based on magnetic field shielding principle of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of end ring;
Fig. 4 is the B-B cutaway view of Fig. 3;
Fig. 5 is the structural representation of magnetic inductive block, and the arrow in figure is silicon steel sheet laminates direction;
Fig. 6 is the structural representation of connecting rod;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the structural representation of the modulation rotor based on magnetic field shielding principle described in execution mode two;
Fig. 9 is the C-C sectional view of Fig. 8;
Figure 10 is the structural representation of the modulation rotor based on magnetic field shielding principle described in execution mode three;
Figure 11 is the D-D sectional view of Figure 10;
When Figure 12 is empty load of motor operation, connecting rod adopts the damage curve figure of permeability magnetic material;
When Figure 13 is empty load of motor operation, connecting rod adopts the damage curve figure of non-magnet material;
When Figure 14 is motor load operation, connecting rod adopts the damage curve figure of permeability magnetic material;
When Figure 15 is motor load operation, connecting rod adopts the damage curve figure of non-magnet material.
Embodiment
Embodiment one: below in conjunction with Fig. 1 to Fig. 7, present embodiment is described, the modulation rotor based on magnetic field shielding principle described in present embodiment, it comprises two end ring 1, a n magnetic inductive block 2 and n connecting rod 3,
On the end face of end ring 1, be along the circumferential direction evenly provided with a plurality of through hole 1-1, on an end face of end ring 1, be evenly provided with a plurality of screw hole 1-2,
Two end ring 1 be arranged in parallel, and the opposing setting of screw hole side of end ring 1, and the through hole 1-1 position in two end ring 1 is relative one by one, and n magnetic inductive block 2 is set between two end ring 1, and each 1 connecting rod 3 of magnetic inductive block 2 use and two end ring 1 are fixed together,
The shaft two ends of connecting rod 3 arrange respectively a columniform screw rod 3-1, the shaft of connecting rod 3 is embedded in magnetic inductive block 2 inside, the screw rod 3-1 that is positioned at shaft two ends passes respectively through hole 1-1, on each screw rod 3-1, is all fixed with nut, and described nut is for clamping end ring 1 and magnetic inductive block 2;
Wherein, n is positive integer.
Magnetic inductive block 2 is formed by silicon steel plate stacking, laminates direction and the axially parallel of modulating rotor.The lamination process of silicon steel sheet will guarantee the outline of all silicon steel sheets and the perforate at two ends alignment.Hole with connecting rod 3 through magnetic inductive block 2, has formed a magnetic inductive block unit like this.
The cross section of magnetic inductive block 2 is fan-shaped, trapezoidal, rectangle or circle.
The shaft of connecting rod 3 adopts non-magnet material or permeability magnetic material.The non-magnet material of selecting is as not magnetic conduction steel, titanium alloy, aluminium alloy or copper.The permeability magnetic material selected is as steel, cast iron or evanohm.
The cross section of the shaft of connecting rod 3 is circle, rectangle, square or oval.
On an end face of end ring 1, be evenly provided with a plurality of screw hole 1-2, to be connected with motor miscellaneous part.
Connecting rod 3 penetrates magnetic inductive block 2, and the end bar 3-1 at connecting rod 3 two ends passes the through hole 1-1 of two end ring 1, and with nut, magnetic inductive block 2, connecting rod 3 and two end ring 1 is connected and fixed.So just make two end ring 1, a n magnetic inductive block 2 and n connecting rod 3 form one and there is the very overall structure of high mechanical properties, also just formed modulation rotor.
From present embodiment, modulate the structure of rotor, silicon steel sheet adopts the mode that laminates of parallel modulation rotor axis to build up magnetic inductive block 2, and magnetic inductive block has been formed have the very magnetic inductive block unit of high mechanical properties by metal material connecting rod, thereby and then magnetic inductive block unit and two end ring 1 are linked into an integrated entity and are formed with the very modulation rotor of high mechanical properties.On the one hand, make to modulate rotor and there is very high mechanical strength, little this self material advantage of the loss that utilizes on the other hand silicon steel sheet to produce under magnetic fields when connecting rod 3 is non-magnetic conductive metal materials while forming, utilizes magnetic field shielding principle to make the loss in connecting rod also very little simultaneously.This makes modulation rotor of the present invention have the little and high advantage of mechanical strength of loss simultaneously, makes the brushless double-rotor machine based on magnetic field modulation principle have good engineering practicability.
Embodiment two: below in conjunction with Fig. 8 and Fig. 9, present embodiment is described, present embodiment is described further execution mode one, and it also comprises bandage 4, bandage 4 is fastened on the outer round surface of modulation rotor.
Bandage 4 adopts glass fiber stringing to realize.The modulation rotor of this execution mode has better Mechanical Reliability.
Embodiment three: below in conjunction with Figure 10 and Figure 11, present embodiment is described, present embodiment is described further execution mode one, and it also comprises epoxy resin 5, epoxy resin 5 fills up the space between end ring 1 and magnetic inductive block 2.
In Figure 10, modulate air part in rotor and water with epoxy resin, formed the modulation rotor in Figure 11.The modulation rotor Mechanical Reliability of this execution mode is higher.
Embodiment four: the modulation rotor based on magnetic field shielding principle described in present embodiment, it comprises two end ring 1, a n magnetic inductive block 2 and nk connecting rod 3,
On the end face of end ring 1, be along the circumferential direction provided with nk through hole 1-1, each group through hole consists of k through hole 1-1, in corresponding magnetic inductive block, embed k connecting rod 3, the position of described k through hole 1-1 is corresponding with k connecting rod 3 positions that embed in magnetic inductive block 2, on an end face of end ring 1, be provided with a plurality of screw hole 1-2
Two end ring 1 be arranged in parallel, and the opposing setting of screw hole side of end ring 1, and the through hole 1-1 position in two end ring 1 is relative one by one, and n magnetic inductive block 2 is set between two end ring 1, and each magnetic inductive block 2 use k connecting rod 3 and two end ring 1 are fixed together,
The shaft two ends of each connecting rod 3 arrange respectively a columniform screw rod 3-1, the shaft of connecting rod 3 is embedded in magnetic inductive block 2 inside, the screw rod 3-1 that is positioned at shaft two ends passes respectively through hole 1-1, on each screw rod 3-1, is all fixed with nut, and described nut is for clamping end ring 1 and magnetic inductive block 2;
Wherein, n is positive integer, and k is more than or equal to 2 positive integer.
When present embodiment is applicable to the negligible amounts of magnetic inductive block 2, the space that each magnetic inductive block 2 accounts at circumferencial direction so will be very large, in this case, a plurality of connecting rods 3 of each magnetic inductive block 2 use are connected can make magnetic inductive block 2 be connected with end ring 1 more firm with end ring 1, the mechanical strength that magnetic inductive block 2 has is higher, when modulation rotor, at the centrifugal force of certain moment of torsion, High Rotation Speed generation and the magnetic field pulling force of magnetic field generation, do the used time, magnetic inductive block 2 deformation are less.
Claims (7)
1. the modulation rotor based on magnetic field shielding principle, is characterized in that, it comprises two end ring (1), a n magnetic inductive block (2) and n connecting rod (3),
On the end face of end ring (1), be along the circumferential direction evenly provided with a plurality of through holes (1-1), on an end face of end ring (1), be evenly provided with a plurality of screw holes (1-2),
Two end ring (1) be arranged in parallel, and the opposing setting of screw hole side of end ring (1), through hole (1-1) position in two end ring (1) is relative one by one, n magnetic inductive block (2) is set between two end ring (1), each magnetic inductive block (2) is fixed together with 1 connecting rod (3) and two end ring (1), and the shaft of connecting rod (3) adopts non-magnet material;
The shaft two ends of connecting rod (3) arrange respectively a columniform screw rod (3-1), the shaft of connecting rod (3) is embedded in magnetic inductive block (2) inside, the screw rod (3-1) that is positioned at shaft two ends passes respectively through hole (1-1), on each screw rod (3-1), be all fixed with nut, described nut is for clamping end ring (1) and magnetic inductive block (2);
Wherein, n is positive integer.
2. the modulation rotor based on magnetic field shielding principle according to claim 1, is characterized in that, magnetic inductive block (2) is formed by silicon steel plate stacking, laminates the axially parallel of direction and modulation rotor.
3. the modulation rotor based on magnetic field shielding principle according to claim 1, is characterized in that, the cross section of magnetic inductive block (2) is fan-shaped, trapezoidal, rectangle or circle.
4. the modulation rotor based on magnetic field shielding principle according to claim 1, is characterized in that, the cross section of the shaft of connecting rod (3) is circle, rectangle, square or oval.
5. the modulation rotor based on magnetic field shielding principle according to claim 1, is characterized in that, it also comprises bandage (4), and bandage (4) is fastened on the outer round surface of modulation rotor.
6. the modulation rotor based on magnetic field shielding principle according to claim 5, is characterized in that, bandage (4) adopts glass fiber stringing to realize.
7. according to the modulation rotor based on magnetic field shielding principle described in claim 1 or 5, it is characterized in that, it also comprises epoxy resin (5), and epoxy resin (5) fills up the space between end ring (1) and magnetic inductive block (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210543589.0A CN102969812B (en) | 2012-12-14 | 2012-12-14 | Modulation ring rotor based on magnetic shielding principle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210543589.0A CN102969812B (en) | 2012-12-14 | 2012-12-14 | Modulation ring rotor based on magnetic shielding principle |
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| CN102969812A CN102969812A (en) | 2013-03-13 |
| CN102969812B true CN102969812B (en) | 2014-12-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2545154B (en) | 2015-08-24 | 2021-12-01 | Magnomatics Ltd | Magnetically geared apparatus and a pole piece for such apparatus |
| CN106787512B (en) * | 2016-12-26 | 2019-01-29 | 株洲九方装备股份有限公司 | A kind of accurate positioning method and device of the processing of permanent magnetism shaft |
| CN108365733B (en) * | 2018-05-02 | 2023-09-29 | 盐城永安科技有限公司 | Magnetic gear structure capable of improving production efficiency |
| CN108448869B (en) * | 2018-05-02 | 2023-09-26 | 盐城永安科技有限公司 | Modulation ring of modulation type permanent magnet gear and manufacturing method thereof |
| CN112491244B (en) * | 2020-11-30 | 2021-10-29 | 珠海格力电器股份有限公司 | Magnetic adjusting ring supporting structure, magnetic adjusting ring component, magnetic gear and composite motor |
| CN113937979B (en) * | 2021-03-11 | 2023-03-14 | 国家电投集团科学技术研究院有限公司 | Permanent magnet gear speed change device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064640A (en) * | 2009-11-18 | 2011-05-18 | 上海万德风力发电股份有限公司 | Method for manufacturing inner rotor of large permanent-magnetic direct driven wind generator |
| CN102563004A (en) * | 2010-12-15 | 2012-07-11 | 江建中 | Magnetic gear with novel magnetic-field regulating ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI117458B (en) * | 2004-05-27 | 2006-10-13 | Abb Oy | Electric machine rotor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064640A (en) * | 2009-11-18 | 2011-05-18 | 上海万德风力发电股份有限公司 | Method for manufacturing inner rotor of large permanent-magnetic direct driven wind generator |
| CN102563004A (en) * | 2010-12-15 | 2012-07-11 | 江建中 | Magnetic gear with novel magnetic-field regulating ring |
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