CN103701236A - Outer rotor synchronous magnetic resistance motor rotor - Google Patents
Outer rotor synchronous magnetic resistance motor rotor Download PDFInfo
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- CN103701236A CN103701236A CN201310710636.0A CN201310710636A CN103701236A CN 103701236 A CN103701236 A CN 103701236A CN 201310710636 A CN201310710636 A CN 201310710636A CN 103701236 A CN103701236 A CN 103701236A
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Abstract
The invention provides an outer rotor synchronous magnetic resistance motor rotor, which comprises a rotor yoke, wherein an even number of magnetic pole units in uniform distribution along the circumference are arranged on the rotor yoke, each magnetic pole unit comprises an installing frame, a plurality of magnetic passages sequentially ranged in the radial direction are arranged in the installing frame, and gaps are arranged between the adjacent magnetic passages. The outer rotor synchronous magnetic resistance motor rotor has the beneficial effects that a magnetic-bridge-free structure is adopted, mutually connected magnetic guide parts are not adopted between the magnetic passages, and the alternating current and direct current axis inductance differences can be easily improved, so the magnetic resistance torque is increased, and the outer rotor synchronous magnetic resistance motor rotor is suitable for occasions requiring high-power density. In the weak link without stress concentration, the rigidity and the intensity of each magnetic passage used as a carrying main body can be guaranteed, and the outer rotor synchronous magnetic resistance motor rotor is suitable for being applied to large-torque or large-centrifugal-force occasions; the processing and the manufacturing are convenient, a plurality of magnetic pole units are spliced after the single processing of each magnetic pole unit is completed, the structure of each magnetic pole unit is simple, no complicated curve surface exits, the processing of single parts is convenient, complicated process measures are not needed, and the outer rotor synchronous magnetic resistance motor rotor is suitable for engineering application.
Description
Technical field
The present invention relates to a kind of rotor, relate in particular to a kind of external rotor synchronous magnetic resistance motor rotor.
Background technology
Synchronous magnetic resistance motor is a kind of motor that relies on reluctance torque operation, the rotor structure that reluctance torque root does not wait in ac-dc axis magnetic resistance, and more reluctance torque is larger for ac-dc axis magnetic resistance difference.Compared to such motor of induction machine, without rotor-side winding, can obtain higher efficiency, and also have better governor control characteristics.Intersect at magneto, this motor is without permanent magnet, and cost is lower, and the risk of demagnetizing without permanent magnet.Therefore such motor is shown up prominently in industry kinds such as elevator, household electrical appliances, vehicle traction.
The patent No. all provides a kind of magnetic resistance motor rotor structure and implementation method for patents such as CN103098346A, CN1881757B, CN101443982A, CN101039059A, but they are all inner rotor cores, are not suitable for external rotor electric machine.Utility model patent CN202798407U, has introduced a kind of outer-rotor structure.Its rotor by permeability magnetic material and on hollow slots form.Though can realize basic function, there is following defect.1. this structure possesses magnetic bridge, at rotor near air gap side, have permeability magnetic material that each magnetic conduction passage is connected to each other, this structure will weaken ac-dc axis magnetic resistance difference, thereby reduce reluctance torque, the inapplicable application scenario that needs high power density; 2. this rotor structure is near connecting and have the weak link on mechanics by thin thin structure between two hollow slots of air gap side, and its strength and stiffness are poor, is not suitable for the applications at large torque or large centrifugal force.3. this application is not illustrated each magnetic conduction passage and the inherent law of magnetic conduction channel thickness, width, distribution mode not, is unfavorable for actual design application.These defects have formed the limitation of its engineering application.
Summary of the invention
The invention provides a kind ofly improved reluctance torque, be applicable to high power density occasion and large torque occasion, the external rotor synchronous magnetic resistance motor rotor of convenient processing and manufacture.
For reaching goal of the invention the technical solution used in the present invention, be:
A kind of external rotor synchronous magnetic resistance motor rotor, it is characterized in that: comprise a rotor yoke, the even number of poles unit distributing along even circumferential is installed on described rotor yoke, described magnetic pole unit comprises installing rack, several magnetic tracks that are radially arranged in order are installed in described installing rack, between adjacent described magnetic track, are provided with gap.Arrange like this and guaranteed along handing over axial magnetic field must pass through gap, thereby obtain very large magnetic resistance, d-axis inductance is little; Along straight axial magnetic circuit, the parallel magnetic track that passes through, magnetic conductivity is good, and d-axis inductance is little.
Further, the width of described magnetic track radially from from rotor yoke near distance to from the reducing successively of rotor yoke distance, the width of all magnetic tracks and be
, t wherein
sfor the average facewidth of motor stator, α
pfor the effective pole arc coefficients, between 0.637 to 0.8, K adjusts coefficient, between 0.7 ~ 1.3, and the number of pole-pairs that P is motor, Z
1groove number for motor stator.Arrange like this and guaranteed that the degree of saturation of stator and rotor is substantially suitable.
Further, the least significant end of described magnetic track is all on the circumference in same circle.The air gap that guarantees magnetic track and motor stator formation is even in radial direction thickness.
Further, the gap width between adjacent described magnetic track radially from from rotor yoke near distance to reducing successively or increasing successively from rotor yoke distance.The method arranging by this unequal-interval, suppresses the rotor tooth effect of grooves, thereby reduces vibration and the noise of torque ripple and motor.
Further, in the gap between adjacent described magnetic track, be filled with air or non-magnet_conductible material, guarantee between adjacent track without magnetic conduction magnetic bridge, i.e. no-leakage magnetic circuit, thus obtain lower quadrature axis inductance.
Further, close 2.0 teslas that are less than of the magnetic of described magnetic track when machine operation.Guarantee in magnetic track, not occur supersaturation, avoid d-axis inductance to increase and fast reducing with electric current.
Further, described magnetic track and installing rack are symmetrical arranged along its symmetrical center line, and its shape of cross section is U-shaped or semi-circular.Shape of cross section can also be that other can complete crooked shape.Arrange like this and can guarantee that magnetic circuit turns to gently.
Further, described magnetic track is fitted on installing rack by pressing plate, connects, to guarantee that thrust passes through dividing plate and transmit successively between adjacent described magnetic track by non-magnetic dividing plate, and each dividing plate can provide two rubbing surfaces, can improve the ability that magnetic track bears torque.
Further, described magnetic track arranges along installing rack axial segmentation.Segments should be with mechanical property and the required thrust decision of magnetic track of pressing plate, if in axial direction length is long for magnetic track, subsection setup can not cause pressure inadequate, and pressing plate distortion is excessive, and segmentation can be avoided this phenomenon.
Further, described rotor yoke is one to have vertically the rotor yoke of thickness, and its inner surface is the face of cylinder or plane.To guarantee that magnetic pole unit is easy for installation.
Beneficial effect of the present invention:
(1) the present invention is one without magnetic bridge structure, between each magnetic track, without the magnetic conduction part being coupled to each other, is easy to improve the ac-dc axis difference in inductance opposite sex, thereby has improved reluctance torque, is applicable to need the application scenario of high power density.
(2) the unstressed concentrated weak link of the present invention, can be protected as the Rigidity and strength that carries each magnetic track of main body, is adapted at the applications of large torque or large centrifugal force.
(3) convenient processing and manufacture, after single magnetic pole unit machines separately, then several are assembled, and each magnetic pole unit is simple in structure, without complex-curved, and single part is easy to process, without complicated technology means, is applicable to engineering application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of magnetic pole unit of the present invention.
Fig. 3 is the portion size mark schematic diagram of magnetic pole unit of the present invention.
Fig. 4 is the structural representation of a kind of specific embodiment of the present invention.
Fig. 5 is the partial structurtes enlarged drawing of a kind of specific embodiment of the present invention.
Fig. 6 is a kind of structural representation of magnetic track of the present invention.
Fig. 7 is the curve chart of the ac-dc axis inductance of a kind of specific embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but does not limit the invention to these embodiments.One skilled in the art would recognize that the present invention contained all alternatives, improvement project and the equivalents that within the scope of claims, may comprise.
With reference to Fig. 1-5, a kind of external rotor synchronous magnetic resistance motor rotor, comprise a rotor yoke 2, the even number of poles unit 1 distributing along even circumferential is installed on described rotor yoke 2, described magnetic pole unit 1 comprises installing rack 3, several magnetic tracks that are radially arranged in order 4 are installed in described installing rack 3, between adjacent described magnetic track 4, are provided with gap.Positive connection between installing rack 3 and rotor yoke 2, connecting mode can be interference, bonding, welding, swelling, screw fastening etc.The present invention is one without magnetic bridge structure, between each magnetic track 4, without the magnetic conduction part being coupled to each other, is easy to improve the ac-dc axis difference in inductance opposite sex, thereby has improved reluctance torque, is applicable to need the application scenario of high power density.
The width of described magnetic track 4 radially from from rotor yoke 2 near distances to from the reducing successively of rotor yoke 2 distance, the width of all magnetic tracks 4 and be
, t wherein
sfor the average facewidth of motor stator, α
pfor the effective pole arc coefficients, between 0.637 to 0.8, K adjusts coefficient, between 0.7 ~ 1.3, and the number of pole-pairs that P is motor, Z
1groove number for motor stator.Installing rack in the present embodiment is provided with 4 magnetic tracks 4, the number of magnetic track 4 is greater than 2, radially from magnetic track 4 width to from rotor yoke 2 distance from rotor yoke 2 near distances, be followed successively by W1, W2, W3, W4, W1>W2>W3>W4, W1+W2+W3+W4=
.
Gap width between adjacent described magnetic track 4 radially from from rotor yoke 2 near distances to reducing successively or increasing successively from rotor yoke 2 distance.In the present embodiment, radially from the gap width to the adjacent described magnetic track 4 from rotor yoke 2 distance from rotor yoke 2 near distances, be followed successively by B1, B2, B3, B1 >=B2 >=B3 or B1≤B2≤B3.
The least significant end of described magnetic track 4 is all on the circumference in same circle 5.
In gap between adjacent described magnetic track 4, be filled with air or non-magnet_conductible material.
Close 2.0 teslas that are less than of the magnetic of described magnetic track 4 when machine operation.
Described magnetic track 4 and installing rack 3 are symmetrical arranged along its symmetrical center line, and its shape of cross section is U-shaped or semi-circular.Shape of cross section can also be that other can complete crooked shape.
Described magnetic track 4 is fitted on installing rack 3 by pressing plate 6, between adjacent described magnetic track 4, by non-magnetic dividing plate 8, connects.The present embodiment pressing plate 6 is by screw 7(or bolt, rivet) connect with installing rack 3, the pulling force of screw 7 compresses pressing plate 6 to rotor yoke 2 radial directions, thrust is passed through the dividing plate 8 of 4 of each magnetic track 4 and magnetic tracks one by one, and the relative position of each magnetic track 4 guarantees by extra frock.The installation site of dividing plate 8 can be the center of magnetic track 4, also can be arranged on other position, as the both wings position of magnetic track 4, the turning position of magnetic track 4 etc.The material of installing rack 3, pressing plate 6, screw 7, dividing plate 8 can be not magnetic conduction, the high-strength material such as austenitic stainless steel, aluminium and alloy thereof, highstrenghtpiston, tetrafluoroethene.Described magnetic track 4 is to be made by high permeability material.As silicon steel, carbon steel, steel alloy etc.Concrete molding mode can be skiver, and casting, forging and stamping, bending and molding can be to be also overrided to form piecewise, see Fig. 6.
Described magnetic track 4 is along installing rack 3 axial segmentation settings.Concrete hop count should determine according to the mechanical property of structure and manufacturability.
Described rotor yoke 2 is one to have vertically the rotor yoke 2 of thickness, and its inner surface is the face of cylinder or plane, to be connected with magnetic pole unit 1 contact.
The variation of the ac-dc axis inductance of the present embodiment as shown in Figure 7, the d-axis difference in inductance opposite sex is described by proper noun " salient pole ratio ", it is the ratio of ac-dc axis inductance, salient pole is such as table 1 calculates, far away same number of poles, the unidimensional prior art scheme of surpassing, thereby improved reluctance torque, be applicable to need the application scenario of high power density.
Table
| D-axis inductance | Quadrature axis inductance | Salient pole ratio |
| 0.11H | 0.016H | 6.9 |
Claims (10)
1. an external rotor synchronous magnetic resistance motor rotor, it is characterized in that: comprise a rotor yoke, the even number of poles unit distributing along even circumferential is installed on described rotor yoke, described magnetic pole unit comprises installing rack, several magnetic tracks that are radially arranged in order are installed in described installing rack, between adjacent described magnetic track, are provided with gap.
2. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 1, is characterized in that: the width of described magnetic track radially from from rotor yoke near distance to from the reducing successively of rotor yoke distance, the width of all magnetic tracks and be
, t wherein
sfor the average facewidth of motor stator, α
pfor the effective pole arc coefficients, between 0.637 to 0.8, K adjusts coefficient, between 0.7 ~ 1.3, and the number of pole-pairs that P is motor, Z
1groove number for motor stator.
3. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 1 and 2, is characterized in that: the least significant end of described magnetic track is all on the circumference in same circle.
4. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 3, is characterized in that: the gap width between adjacent described magnetic track radially from from rotor yoke near distance to reducing successively or increasing successively from rotor yoke distance.
5. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 4, is characterized in that: in the gap between adjacent described magnetic track, be filled with air or non-magnet_conductible material.
6. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 5, is characterized in that: close 2.0 teslas that are less than of the magnetic of described magnetic track when machine operation.
7. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 6, is characterized in that: described magnetic track and installing rack are symmetrical arranged along its symmetrical center line, and its shape of cross section is U-shaped or semi-circular.
8. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 7, is characterized in that: described magnetic track is fitted on installing rack by pressing plate, between adjacent described magnetic track, by non-magnetic dividing plate, connects.
9. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 8, is characterized in that: described magnetic track arranges along installing rack axial segmentation.
10. a kind of external rotor synchronous magnetic resistance motor rotor according to claim 9, is characterized in that: described rotor yoke is one to have vertically the rotor yoke of thickness, and its inner surface is the face of cylinder or plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710636.0A CN103701236B (en) | 2013-12-20 | 2013-12-20 | A kind of outer rotor synchronous magnetic resistance motor rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710636.0A CN103701236B (en) | 2013-12-20 | 2013-12-20 | A kind of outer rotor synchronous magnetic resistance motor rotor |
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| CN103701236A true CN103701236A (en) | 2014-04-02 |
| CN103701236B CN103701236B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310710636.0A Active CN103701236B (en) | 2013-12-20 | 2013-12-20 | A kind of outer rotor synchronous magnetic resistance motor rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370261A (en) * | 2016-04-25 | 2017-11-21 | 通用电气公司 | Bushing rotor synchronous magnetic resistance motor |
| CN110337769A (en) * | 2017-02-24 | 2019-10-15 | 利莱森玛电机公司 | Axial flux rotary-type motor |
| CN112332570A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003189567A (en) * | 2001-12-14 | 2003-07-04 | Asmo Co Ltd | Synchronous reluctance motor |
| CN2826808Y (en) * | 2005-08-18 | 2006-10-11 | 乐金电子(天津)电器有限公司 | Synchronous frequency conversion reluctance motor |
| CN202798407U (en) * | 2012-08-27 | 2013-03-13 | 浙江西子富沃德电机有限公司 | Synchronous reluctance motor outer rotor and synchronous reluctance motor using same |
| CN203747526U (en) * | 2013-12-20 | 2014-07-30 | 杭州易泰达科技有限公司 | External rotor synchronous magnetic resistance motor rotor |
-
2013
- 2013-12-20 CN CN201310710636.0A patent/CN103701236B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003189567A (en) * | 2001-12-14 | 2003-07-04 | Asmo Co Ltd | Synchronous reluctance motor |
| CN2826808Y (en) * | 2005-08-18 | 2006-10-11 | 乐金电子(天津)电器有限公司 | Synchronous frequency conversion reluctance motor |
| CN202798407U (en) * | 2012-08-27 | 2013-03-13 | 浙江西子富沃德电机有限公司 | Synchronous reluctance motor outer rotor and synchronous reluctance motor using same |
| CN203747526U (en) * | 2013-12-20 | 2014-07-30 | 杭州易泰达科技有限公司 | External rotor synchronous magnetic resistance motor rotor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370261A (en) * | 2016-04-25 | 2017-11-21 | 通用电气公司 | Bushing rotor synchronous magnetic resistance motor |
| CN110337769A (en) * | 2017-02-24 | 2019-10-15 | 利莱森玛电机公司 | Axial flux rotary-type motor |
| CN112332570A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
| CN112332570B (en) * | 2019-11-12 | 2023-09-12 | 沈阳工业大学 | Multipolar rotor of outer rotor low-speed synchronous reluctance motor |
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|---|---|
| CN103701236B (en) | 2016-08-17 |
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Effective date of registration: 20160907 Address after: 201711 Nanping Road, Baihe Town, Qingpu District, Shanghai, 118 Patentee after: Chi Mei electric (Shanghai) Co., Ltd. Address before: 310008, building 5, room 3850, innovation building, 501 Jiangnan Avenue, Hangzhou, Zhejiang, Binjiang District Patentee before: Yitaida Science and Technology Co., Ltd., Hangzhou |
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Effective date of registration: 20180212 Address after: Hangzhou City, Zhejiang province Binjiang District 310000 River Street Museum Street No. 1505 Kerry gold room 1402 Patentee after: Yitaida Science and Technology Co., Ltd., Hangzhou Address before: 201711 Nanping Road, Baihe Town, Qingpu District, Shanghai, 118 Patentee before: Chi Mei electric (Shanghai) Co., Ltd. |