CN203014620U - A permanent magnetic motor - Google Patents
A permanent magnetic motor Download PDFInfo
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- CN203014620U CN203014620U CN 201320024138 CN201320024138U CN203014620U CN 203014620 U CN203014620 U CN 203014620U CN 201320024138 CN201320024138 CN 201320024138 CN 201320024138 U CN201320024138 U CN 201320024138U CN 203014620 U CN203014620 U CN 203014620U
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- tooth
- magnetic pole
- iron core
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Abstract
The utility model provides a permanent magnetic motor comprising an inner rotor, a stator, and an outer rotor. The inner rotor comprises an inner rotor core. The stator is disposed round the inner rotor and a gap is arranged between the stator and the inner rotor. The stator comprises a stator core and a stator winding. Multiple stator grooves disposed on the circumferential direction of the stator core at intervals and multiple teeth are disposed on the stator core. The stator winding is disposed in the stator grooves. The outer rotor is arranged coaxial with the inner rotor and is rotated at speed the same as the rotating speed of the inner rotor. The outer rotor is disposed round the stator and a gap is arranged between the outer rotor and the stator. Multiple first magnetic pole grooves are disposed on the inner rotor core and are arranged in parallel along the radial direction of the inner rotor. The utility model effectively resolves problems of large motor driving current and low motor efficiency of a permanent magnetic motor in the prior art.
Description
Technical field
The utility model is specifically related to a kind of magneto.
Background technology
Dual rotor permanent magnetic motor compares with conventional motors that to have the axis size little, the feature performance benefits such as power density is high, torque/mass ratio is large, low cruise is steady, be widely applied, yet in prior art, the permanent magnet of magneto mostly adopts the surface-mount type structure, be that permanent magnet all is arranged on rotor on the surface of stator, the utilization of reluctance torque causes motor drive current greatly and electric efficiency is low but the magneto of prior art does not increase.
The utility model content
The utility model aims to provide a kind of magneto, the large and low problem of electric efficiency with the motor drive current that solves magneto in prior art.
To achieve these goals, the utility model provides a kind of magneto, comprising: internal rotor comprises the internal rotor iron core; Stator also and between internal rotor has the gap around the internal rotor setting, and stator is included in the stator winding that circumferencial direction is arranged at intervals with the stator core of a plurality of stator slots and a plurality of teeth and is placed in stator slot; External rotor, external rotor are with the coaxial setting of internal rotor and with identical speed rotating Vortex, and external rotor also and between stator has the gap around the stator setting, and the internal rotor iron core is provided with a plurality of the first magnetic pole grooves that are set up in parallel along the radial direction of internal rotor.
Further, external rotor comprises outer rotor iron core, is provided with the second permanent magnet on the inner surface of outer rotor iron core, and the angle between the second pole center line of the first pole center line of internal rotor and corresponding external rotor is between 20 ° to 45 °.
Further, external rotor comprises outer rotor iron core, outer rotor iron core inside is provided with along the radial direction of external rotor multilayer the second magnetic pole groove spaced apart, be provided with many groups the second magnetic pole unit on outer rotor iron core, every group of second magnetic pole unit comprises the second permanent magnet that is separately positioned in the second magnetic pole groove, the axial stack magnetic line of force of a plurality of the second permanent magnets in every group of second magnetic pole unit points to the consistent common magnetic pole N of formation or S, has the first angle between the second pole center line of the first pole center line of internal rotor and external rotor accordingly.
Further, be provided with many groups the first magnetic pole unit on the internal rotor iron core, every group of first magnetic pole unit comprises a plurality of the first permanent magnets, a plurality of the first permanent magnets are separately positioned in the first different magnetic pole grooves, the axial stack magnetic line of force of the first permanent magnet of every group of first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and external rotor is oppositely arranged with identical magnetic pole and internal rotor.
Further, stator core is loop configuration, stator slot comprises the first groove and the second groove, tooth comprises the first tooth and the second tooth, the first groove and the first tooth are disposed on the inwall of stator core along the circumferencial direction of stator, the second groove and the second tooth are disposed on the outer wall of stator core along the circumferencial direction of stator, have the second angle between the center line of the center line of the first tooth and corresponding the second tooth adjacent with the first tooth.
Further, the first groove is 1:2 with the quantity ratio of the second groove.
Further, the inside of internal rotor iron core is provided with a plurality of magnetic flux stop parts, and a plurality of magnetic flux stop parts are arranged on respectively in the first magnetic pole groove, and the magnetic flux stop part is every magnetizing mediums, and the internal rotor iron core is magnetic conductive media.
Further, the magnetic flux stop part is corresponding with external rotor magnetic poles, has the 3rd angle between the second pole center line of the center line of magnetic flux stop part and corresponding external rotor magnetic poles.
Further, the 3rd angle is between 40 ° to 50 °.
Further, stator core is comprised of a plurality of stator pieces clamping successively, splicing gap between a plurality of stator pieces is positioned in the middle of the tooth of stator, has formed iron core yoke section between the first tooth of stator core both sides and the second tooth, and the iron core yoke section place that is positioned at of each stator piece winds the line.
Use the technical solution of the utility model, magneto comprises: internal rotor comprises the internal rotor iron core; Stator also and between internal rotor has the gap around the internal rotor setting, and stator is included in the stator winding that circumferencial direction is arranged at intervals with the stator core of a plurality of stator slots and a plurality of teeth and is placed in stator slot; External rotor, external rotor are with the coaxial setting of internal rotor and with identical speed rotating Vortex, and external rotor also and between stator has the gap around the stator setting, and the internal rotor iron core is provided with a plurality of the first magnetic pole grooves that are set up in parallel along the radial direction of internal rotor.Internal rotor have multilayer the first magnetic pole groove structure and same tangential in the same polarity distribution, the magnetic pole N and the S that form internal rotor are alternately distributed, because a plurality of the first magnetic pole grooves cause the magnetic circuit of internal rotor asymmetric along radially being set up in parallel of internal rotor, produced reluctance torque, the increase of reluctance torque utilization is conducive to reduce motor drive current, reduce the loss of electric machine, improve the whole efficiency of motor.
Description of drawings
The Figure of description that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the first embodiment of magneto of the present utility model;
Fig. 2 shows the structural representation of internal rotor of the magneto of Fig. 1;
Fig. 3 shows the distribution schematic diagram of pole center line of the magneto of Fig. 1;
Fig. 4 shows the structural representation of stator of the magneto of Fig. 1;
Fig. 5 shows the distribution schematic diagram of tooth center line of the stator of Fig. 4;
Fig. 6 shows the structural representation of the stator piece of Fig. 4;
Fig. 7 shows the outer-rotor structure schematic diagram of the magneto of the second embodiment of the present utility model;
Fig. 8 shows the distribution schematic diagram of pole center line of inner and outer Rotator of the magneto of Fig. 7;
Fig. 9 shows the inner rotor core schematic diagram of the 3rd embodiment of magneto of the present utility model;
Figure 10 shows the distribution schematic diagram of the magnetic flux stop part center line of the pole center line of external rotor of magneto of Fig. 9 and internal rotor;
Figure 11 shows the drive current of magneto of the first embodiment and the contrast schematic diagram of prior art;
Figure 12 shows α angle in the first embodiment of magneto to the schematic diagram that affects of the synthetic electromagnetic torque of motor;
Figure 13 shows β angle in the 3rd embodiment of magneto to the schematic diagram that affects of the synthetic electromagnetic torque of motor;
Figure 14 shows γ angle in the first embodiment of magneto to the schematic diagram that affects of motor cogging torque;
Figure 15 shows θ angle in the second embodiment of magneto to the schematic diagram that affects of motor cogging torque.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
the utility model provides the first embodiment of magneto, referring to Fig. 1 and Fig. 2, the magneto of the present embodiment comprises internal rotor 10, stator 20 and external rotor 30, internal rotor 10 comprises internal rotor iron core 11, stator 20 arrange around internal rotor 10 and and internal rotor 10 between have the gap, stator 20 is included in the stator winding 24 that circumferencial direction is arranged at intervals with the stator core 21 of a plurality of stator slots 22 and a plurality of tooth 23 and is placed in groove, external rotor 30 is with the coaxial setting of internal rotor 10 and with identical speed rotating Vortex, external rotor 30 arrange around stator 20 and and stator 20 between have the gap, internal rotor iron core 11 is provided with a plurality of the first magnetic pole grooves 13 that are set up in parallel along the radial direction of internal rotor 10.
As shown in figures 1 and 3, external rotor 30 in the present embodiment comprises outer rotor iron core 31, be provided with the second permanent magnet 32 that is alternately distributed magnetic pole N and S on the inner surface of outer rotor iron core 31, angle α between the second pole center line 34 of the first pole center line 14 of internal rotor 10 and corresponding external rotor is between 20 ° to 45 °, and the pole center line of external rotor is led over internal rotor pole center line in the rotor direction.Of particular note, all angles that relate in the application are electric angle, electric angle=mechanical angle X motor number of pole-pairs, and electric angle equals mechanical angle and multiply by the motor number of pole-pairs.
Figure 12 has illustrated that the external rotor magnetic poles center line forms the α angle to the impact of the synthetic electromagnetic torque of motor with inboard rotor pole center line on the rotor direction, as can be seen from the figure, the pole center line of inner and outer rotors is staggered certain angle can be so that motor obtains larger synthetic electromagnetic torque under identical electric current, and the pole center line of outside rotors is when the angle of 20 ° to 45 ° of the leading inboard rotors of rotor direction, be angle α between 20 ° to 45 ° the time, the synthetic electromagnetic torque effective value of motor is maximum under identical electric current.
Be provided with many groups the first magnetic pole unit on the internal rotor iron core, every group of first magnetic pole unit comprises a plurality of the first permanent magnets 12, a plurality of the first permanent magnets 12 are separately positioned in the first different magnetic pole grooves 13, the axial stack magnetic line of force of the first permanent magnet 12 of every group of first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and external rotor 30 is oppositely arranged with identical N or S polarity and internal rotor 10.By inner and outer rotors is oppositely arranged with identical polarity, can produce larger torque under identical electric current so that motor is compared opposed polarity to be oppositely arranged, thereby reduce the winding loss of motor, increased electric efficiency.
As shown in Figure 4 and Figure 5, stator core 21 is loop configuration, stator slot 22 comprises the first groove 221 and the second groove 222, tooth 23 comprises the first tooth 231 and the second tooth 232, the first groove 221 and the first tooth 231 are disposed on the inwall of stator core 21 along the circumferencial direction of stator, the second groove 222 and the second tooth 232 are disposed on the outer wall of stator core 21 along the circumferencial direction of stator, have the second angle γ between the center line of the center line of the first tooth 231 and corresponding the second tooth 232 adjacent with the first tooth 231.On manufacture craft, by cutting out the first groove 221 and the second groove 222 to form the first tooth and the second tooth on stator core 21, make and the spaced apart setting adjacent with the first groove of the first tooth, make and the spaced apart setting adjacent with the second groove of the second tooth.Figure 14 has represented that the angle of the first tooth center line of stator and the second tooth center line is on the impact of motor cogging torque pulsation, as can be seen from Figure 14, γ ' is the motor cogging torque fluctuation amplitude of motor in 0 prior art of spending, and motor cogging torque fluctuation amplitude reduces along with the existence of γ angle, in the adjustable extent of the second angle γ, there is optimum angle γ
1Make the cogging torque pulsation reach minimum value, optimum angle γ
1Change with motor slot number cooperation value.
The quantity of the first groove 221 and the second groove 222 is than being 1:2.To compare inner wall space larger due to the outer wall of stator, can effectively reduce the cogging torque pulsation of external rotor by more groove is set at outer wall.
the utility model also provides the second embodiment of magneto, specifically referring to Fig. 7 and Fig. 8, the magneto of the present embodiment comprises internal rotor, stator and external rotor 30, the structure of the magneto of the present embodiment and annexation are basic identical with the magneto of the first embodiment, and difference only is, outer rotor iron core 31 inside are provided with along the radial direction of external rotor 30 multilayer the second magnetic pole groove 33 spaced apart, be provided with many groups the second magnetic pole unit on outer rotor iron core 31, every group of second magnetic pole unit comprises the second permanent magnet 32 that is separately positioned in the second different magnetic pole grooves 33, the axial stack magnetic line of force of a plurality of the second permanent magnets 32 in every group of second magnetic pole unit points to the consistent common magnetic pole N of formation or S, has the first angle theta between the second pole center line 34 of the first pole center line 14 of internal rotor 10 and corresponding external rotor.The external rotor of the present embodiment and internal rotor all adopt the structure of multilayer permanent magnet, internal rotor and the coaxial setting of external rotor, and the internal rotor magnetic pole that the first tooth of stator is relative with the second tooth is identical with external rotor magnetic poles polarity.
Figure 15 has represented that the pole center wire clamp angle of inner and outer Rotator is on the schematic diagram that affects of motor cogging torque pulsation, as can be seen from Figure 15, θ ' is the motor cogging torque fluctuation amplitude of motor in 0 prior art of spending, motor cogging torque fluctuation amplitude exists along with pole center line angle theta and reduces, in the angle theta adjustable extent, exist optimum angle theta 1 to make the cogging torque pulsation reach minimum value, optimum angle theta 1 changes with motor slot number cooperation value.The magneto of the technique effect of the magneto of the second embodiment and the first embodiment is basic identical.
The utility model also provides the 3rd embodiment of magneto, specifically referring to Fig. 9 and shown in Figure 10, the magneto of the present embodiment comprises internal rotor 10, stator and external rotor 30, the structure of the magneto of the present embodiment and annexation are basic identical with the magneto of the first embodiment, and difference only is, the inside of internal rotor iron core 11 is provided with a plurality of magnetic flux stop parts 15, a plurality of magnetic flux stop parts 15 are separately positioned in the first magnetic pole groove 13, magnetic flux stop part 15 is every magnetizing mediums, and the internal rotor iron core is magnetic conductive media.
Magnetic flux stop part 15 is corresponding with external rotor magnetic poles, has the 3rd angle β between the second pole center line 34 of the center line of magnetic flux stop part 15 and corresponding external rotor magnetic poles, can find out as Figure 13, the pole center line of external rotor is led over the magnetic flux stop part center line of internal rotor in the rotor direction, when the pole center line of external rotor formed the β angle between the magnetic flux stop part center line of rotor direction and internal rotor, the β angle was not 0 can be so that motor obtains larger electromagnetic torque under identical electric current.And as can be seen from Figure 13, at 40 ° during to 50 ° of angles, the synthetic electromagnetic torque effective value of motor is maximum as β.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. magneto comprises:
Internal rotor (10) comprises internal rotor iron core (11);
Stator (20), around described internal rotor (10) arrange and and described internal rotor (10) between have the gap, described stator (20) is included in the stator winding (24) that circumferencial direction is arranged at intervals with the stator core (21) of a plurality of stator slots (22) and a plurality of tooth (23) and is placed in described stator slot (22);
External rotor (30), described external rotor (30) be with the coaxial setting of described internal rotor (10) and with identical speed rotating Vortex, described external rotor (30) arrange around described stator (20) and and described stator (20) between have the gap,
It is characterized in that, described internal rotor iron core (11) is provided with a plurality of the first magnetic pole grooves (13) that are set up in parallel along the radial direction of described internal rotor (10).
2. magneto according to claim 1, it is characterized in that, described external rotor (30) comprises outer rotor iron core (31), be provided with the second permanent magnet (32) on the inner surface of described outer rotor iron core (31), the angle between the first pole center line (14) of described internal rotor (10) and the second pole center line (34) of corresponding described external rotor (30) is between 20 ° to 45 °.
3. magneto according to claim 1, it is characterized in that, described external rotor (30) comprises outer rotor iron core (31), described outer rotor iron core (31) inside is provided with along the radial direction of described external rotor (30) multilayer the second magnetic pole groove (33) spaced apart, be provided with many groups the second magnetic pole unit on described outer rotor iron core (31), every group of described second magnetic pole unit comprises the second permanent magnet (32) that is separately positioned in described the second magnetic pole groove (33), the axial stack magnetic line of force of a plurality of described the second permanent magnet (32) in every group of described second magnetic pole unit points to the consistent common magnetic pole N of formation or S, has the first angle (θ) between the first pole center line (14) of described internal rotor (10) and the second pole center line (34) of corresponding described external rotor.
4. magneto according to claim 1, it is characterized in that, be provided with many groups the first magnetic pole unit on described internal rotor iron core (11), every group of described first magnetic pole unit comprises a plurality of the first permanent magnets (12), a plurality of described the first permanent magnets (12) are separately positioned in different described the first magnetic pole grooves (13), the axial stack magnetic line of force of first permanent magnet (12) of every group of described first magnetic pole unit points to the consistent common magnetic pole N of formation or S, and described external rotor (30) is oppositely arranged with identical magnetic pole and described internal rotor (10).
5. magneto according to claim 1, it is characterized in that, described stator core (21) is loop configuration, described stator slot (22) comprises the first groove (221) and the second groove (222), described tooth (23) comprises the first tooth (231) and the second tooth (232), described the first groove (221) and described the first tooth (231) are disposed on the inwall of described stator core (21) along the circumferencial direction of described stator, described the second groove (222) and the second tooth (232) are disposed on the outer wall of described stator core (21) along the circumferencial direction of described stator (20), has the second angle (γ) between the center line of the center line of described the first tooth (231) and corresponding described the second tooth (232) adjacent with this described first tooth (231).
6. magneto according to claim 5, is characterized in that, described the first groove (221) is 1:2 with the quantity ratio of described the second groove (222).
7. magneto according to claim 1, it is characterized in that, the inside of described internal rotor iron core (11) is provided with a plurality of magnetic flux stop parts (15), a plurality of described magnetic flux stop parts (15) are separately positioned in described the first magnetic pole groove (13), described magnetic flux stop part (15) is every magnetizing mediums, and described internal rotor iron core (11) is magnetic conductive media.
8. magneto according to claim 7, it is characterized in that, described magnetic flux stop part (15) is corresponding with the magnetic pole of described external rotor, has the 3rd angle (β) between the second pole center line (34) of the center line of described magnetic flux stop part (15) and corresponding described external rotor magnetic poles.
9. magneto according to claim 8, is characterized in that, described the 3rd angle (β) is between 40 ° to 50 °.
10. magneto according to claim 5, it is characterized in that, described stator core (21) is comprised of a plurality of stator pieces clamping successively, splicing gap between a plurality of described stator pieces is positioned in the middle of the tooth (23) of described stator, formed iron core yoke section between described first tooth of described stator core (21) both sides and described the second tooth, the described iron core yoke section place that is positioned at of each described stator piece winds the line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024138 CN203014620U (en) | 2013-01-16 | 2013-01-16 | A permanent magnetic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024138 CN203014620U (en) | 2013-01-16 | 2013-01-16 | A permanent magnetic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014620U true CN203014620U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320024138 Expired - Fee Related CN203014620U (en) | 2013-01-16 | 2013-01-16 | A permanent magnetic motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203014620U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929026A (en) * | 2013-01-16 | 2014-07-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor |
| CN105471209A (en) * | 2014-09-10 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor |
| WO2016058446A1 (en) * | 2014-10-13 | 2016-04-21 | 广东威灵电机制造有限公司 | Motor |
| CN105529888A (en) * | 2014-10-27 | 2016-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor and winding arrangement method therefor |
| CN106451966A (en) * | 2016-10-31 | 2017-02-22 | 广东威灵电机制造有限公司 | Motor |
| CN108322002A (en) * | 2018-02-12 | 2018-07-24 | 山东大学 | A kind of fault tolerant type birotor bipolarity permanent magnet synchronous motor and method |
| CN109149816A (en) * | 2018-09-28 | 2019-01-04 | 苏州润吉驱动技术有限公司 | A kind of spliced outer rotor of permanent magnet motor |
-
2013
- 2013-01-16 CN CN 201320024138 patent/CN203014620U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929026A (en) * | 2013-01-16 | 2014-07-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor |
| CN103929026B (en) * | 2013-01-16 | 2016-01-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Magneto |
| CN105471209A (en) * | 2014-09-10 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor |
| CN105471209B (en) * | 2014-09-10 | 2019-07-26 | 珠海格力电器股份有限公司 | Switched reluctance machines |
| WO2016058446A1 (en) * | 2014-10-13 | 2016-04-21 | 广东威灵电机制造有限公司 | Motor |
| CN105529888A (en) * | 2014-10-27 | 2016-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance motor and winding arrangement method therefor |
| CN105529888B (en) * | 2014-10-27 | 2018-12-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Switched reluctance machines and its winding method for arranging |
| CN106451966A (en) * | 2016-10-31 | 2017-02-22 | 广东威灵电机制造有限公司 | Motor |
| CN106451966B (en) * | 2016-10-31 | 2018-11-23 | 广东威灵电机制造有限公司 | Motor |
| CN108322002A (en) * | 2018-02-12 | 2018-07-24 | 山东大学 | A kind of fault tolerant type birotor bipolarity permanent magnet synchronous motor and method |
| CN109149816A (en) * | 2018-09-28 | 2019-01-04 | 苏州润吉驱动技术有限公司 | A kind of spliced outer rotor of permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20160116 |
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| EXPY | Termination of patent right or utility model |