CN204696827U - Permanent magnet machine rotor and permagnetic synchronous motor - Google Patents
Permanent magnet machine rotor and permagnetic synchronous motor Download PDFInfo
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- CN204696827U CN204696827U CN201520362228.5U CN201520362228U CN204696827U CN 204696827 U CN204696827 U CN 204696827U CN 201520362228 U CN201520362228 U CN 201520362228U CN 204696827 U CN204696827 U CN 204696827U
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- permanent magnet
- main pole
- pole permanent
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Abstract
The utility model provides a kind of permanent magnet machine rotor and permagnetic synchronous motor.This permanent magnet machine rotor comprises: rotor core; Tangential magnetized main pole permanent magnet, described main pole permanent magnet is arranged along the radial direction of described rotor core, the quantity of described main pole permanent magnet is equal with the number of poles of permagnetic synchronous motor, described main pole permanent magnet is uniformly distributed along the circumferential direction of described rotor core, and two of arbitrary neighborhood immediate surperficial magnetic poles of described main pole permanent magnet are identical; And tangential magnetized auxiliary permanent magnet, described auxiliary permanent magnet is arranged along the radial direction of described rotor core, and described auxiliary permanent magnet is between two described main pole permanent magnets of arbitrary neighborhood, to reach the working point of improving main pole permanent magnet, and then the anti-demagnetization capability of main pole permanent magnet is improved, reduce the object of the risk of demagnetization.
Description
Technical field
The utility model relates to motor device field, particularly relates to a kind of permanent magnet machine rotor of tangential, and the permagnetic synchronous motor containing above-mentioned permanent magnet machine rotor.
Background technology
Motor containing the tangential magnetization configuration of permanent magnet is owing to having " poly-magnetic " effect, comparatively permanent magnet diametrical magnetization motor, higher air gap flux density can be produced, make the motor containing the tangential magnetization configuration of permanent magnet have larger torque/current ratio and torque/volume ratio, and then the motor containing the tangential magnetization configuration of permanent magnet is applied to the occasions such as servo system, electric traction, office automation, household electrical appliance more and more.
At present, tangential permanent magnet motor is owing to being that two faces of single permanent magnet provide air-gap flux simultaneously, magnetic circuit is parallel-connection structure, make the working point of rotor permanent magnet low compared with the working point of radial permanent magnet motor, easily cause the decrease in efficiency of tangential permanent magnet motor, and there is the risk of demagnetization in tangential permanent magnet motor in the presence of a harsh environment, makes tangential permanent magnet motor to operate.
Utility model content
Based on this, be necessary for the working point of main pole permanent magnet in existing tangential permanent magnet motor lower, the easy problem that there is demagnetization risk, there is provided a kind of and can improve the working point of main pole permanent magnet, promote the permanent magnet machine rotor of anti-demagnetization capability, and the permagnetic synchronous motor containing above-mentioned permanent magnet machine rotor.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of permanent magnet machine rotor, comprising:
Rotor core;
Tangential magnetized main pole permanent magnet, described main pole permanent magnet is arranged along the radial direction of described rotor core, the quantity of described main pole permanent magnet is equal with the number of poles of permagnetic synchronous motor, multiple described main pole permanent magnet is uniformly distributed along the circumferential direction of described rotor core, and two of arbitrary neighborhood immediate surperficial magnetic poles of described main pole permanent magnet are identical; And
Tangential magnetized auxiliary permanent magnet, described auxiliary permanent magnet is arranged along the radial direction of described rotor core, and described auxiliary permanent magnet is between two described main pole permanent magnets of arbitrary neighborhood.
Wherein in an embodiment, in the symmetrical center line of described auxiliary permanent magnet between two described main pole permanent magnets of arbitrary neighborhood.
Wherein in an embodiment, described auxiliary permanent magnet departs from the symmetrical center line between two described main pole permanent magnets of arbitrary neighborhood, and described auxiliary permanent magnet is to the direction skew at the different described main pole permanent magnet place of adjacent magnetic pole.
Wherein in an embodiment, the coercive force of described auxiliary permanent magnet is less than the coercive force of described main pole permanent magnet.
Wherein in an embodiment, described auxiliary permanent magnet is less than described main pole permanent magnet along the width in described rotor core circumferential direction along the width in described rotor core circumferential direction.
Wherein in an embodiment, described auxiliary permanent magnet is less than described main pole permanent magnet along described rotor core length in the radial direction along described rotor core length in the radial direction.
Wherein in an embodiment, the quantity of described main pole permanent magnet is more than or equal to four.
Wherein in an embodiment, the described main pole permanent magnet placement parallel with described auxiliary permanent magnet of arbitrary neighborhood, and the different surface of the magnetic pole of described main pole permanent magnet and described auxiliary permanent magnet fits.
Wherein in an embodiment, the described main pole permanent magnet of arbitrary neighborhood and described auxiliary permanent magnet are integrated.
Also relate to a kind of permagnetic synchronous motor, comprise stators and rotators, described stator is positioned at the outside of described rotor, and described rotor is the permanent magnet machine rotor described in above-mentioned arbitrary technical characteristic.
The beneficial effects of the utility model are:
Permanent magnet machine rotor of the present utility model and permagnetic synchronous motor, structural design advantages of simple, between two main pole permanent magnets of arbitrary neighborhood, auxiliary permanent magnet is installed, air gap is entered again after a part of magnetic line of force of main pole permanent magnet can being connected with auxiliary permanent magnet, the working point of main pole permanent magnet can be significantly improved like this, improve the torque of permagnetic synchronous motor.Meanwhile, due to the raising of the working point of main pole permanent magnet, the anti-demagnetization capability of main pole permanent magnet is improved, reduces the risk of demagnetization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the permagnetic synchronous motor of the utility model one embodiment;
Fig. 2 is rotor structure for permanent magnet motor schematic diagram in the permagnetic synchronous motor shown in Fig. 1;
Fig. 3 is the structural representation when permanent magnet machine rotor described in Fig. 2 rotates clockwise;
Fig. 4 is the structural representation when permanent magnet machine rotor shown in Fig. 2 rotates counterclockwise;
The structural representation that main pole permanent magnet and auxiliary permanent magnet that Fig. 5 is the permanent magnet machine rotor shown in Fig. 2 put together;
Wherein:
100-permagnetic synchronous motor;
110-permanent magnet machine rotor; 111-rotor core; 112-main pole permanent magnet; 113-auxiliary permanent magnet;
120-stator; 121-stator core; 122-stator winding.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, by the following examples, and by reference to the accompanying drawings, permanent magnet machine rotor of the present utility model and permagnetic synchronous motor are further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1, the permanent magnet machine rotor 110 of the utility model one embodiment, comprises rotor core 111, tangential magnetized main pole permanent magnet 112 and tangential magnetized auxiliary permanent magnet 113.Rotor core 111 is provided with even number standing groove, even number standing groove is uniformly distributed along the circumferential direction of rotor core 111, and each standing groove is arranged along the radial direction of rotor core 111.The quantity of standing groove equals the number of poles of permagnetic synchronous motor, simultaneously, the quantity of main pole permanent magnet 112 is equal with the quantity of standing groove, namely the number of poles of permagnetic synchronous motor 100 is even level, the quantity of main pole permanent magnet 112 is also even number, and even number main pole permanent magnet 112 is uniformly distributed along the circumferential direction of rotor core 111.Main pole permanent magnet 112 is arranged in standing groove respectively, and two of arbitrary neighborhood immediate surperficial magnetic poles of main pole permanent magnet 112 are identical.In each standing groove, a main pole permanent magnet 112 is installed, makes two of main pole permanent magnet 112 surfaces can provide air-gap flux simultaneously, increase the air-gap flux amount of permagnetic synchronous motor 100, improve the utilance of air-gap flux.
Simultaneously, the immediate surperficial magnetic pole of two main pole permanent magnets 112 of arbitrary neighborhood is identical, namely the N of the main pole permanent magnet 112 that the N pole of one of them main pole permanent magnet 112 is adjacent with another is extremely relative, the S pole of this main pole permanent magnet 112 is extremely relative with the S of an adjacent main pole permanent magnet 112 again, ensures that the number of poles of permagnetic synchronous motor 100 equals the quantity of main pole permanent magnet 112.Be arranged in equally distributed standing groove by even number main pole permanent magnet 112, can ensure that main pole permanent magnet 112 keeps stress balance under repulsive force effect, make the number of poles of permagnetic synchronous motor 100 equal the quantity of main pole permanent magnet 112.
Auxiliary permanent magnet 113 is between two main pole permanent magnets 112 of arbitrary neighborhood, and auxiliary permanent magnet 113 is arranged along the radial direction of rotor core 111.In the present embodiment, the quantity of auxiliary permanent magnet 113 equals the quantity of main pole permanent magnet 112, meanwhile, there is an auxiliary permanent magnet 113 between two main pole permanent magnets 112 of arbitrary neighborhood.Main pole permanent magnet 112 and auxiliary permanent magnet 113 are all cutting orientation magnetizing, make permagnetic synchronous motor 100 can produce higher air-gap flux, and then ensure that permagnetic synchronous motor 100 has larger torque/current ratio and torque/volume ratio.Main pole permanent magnet 112 and auxiliary permanent magnet 113 are placed along the radial direction of rotor core 111, by tangential magnetized auxiliary permanent magnet 113 is arranged between the main pole permanent magnet 112 of arbitrary neighborhood, a part of magnetic line of force of main pole permanent magnet 112 and auxiliary permanent magnet 113 enter air gap after contacting again, the working point of main pole permanent magnet 112 can be significantly improved, permanent magnet machine rotor 110 is made to produce more magnetic linkage in stator 120 side, improve the utilance of air-gap flux, promote the Driving Torque of permagnetic synchronous motor 100, improve the efficiency of permagnetic synchronous motor 100.
Existing tangential permanent magnet motor is owing to being that two faces of single permanent magnet provide air-gap flux simultaneously, magnetic circuit is parallel-connection structure, make the working point of rotor permanent magnet low compared with the working point of radial permanent magnet motor, easily cause the decrease in efficiency of tangential permanent magnet motor, and there is the risk of demagnetization, tangential permanent magnet motor cannot be operated.Permanent magnet machine rotor 110 of the present utility model installs auxiliary permanent magnet 113 between two main pole permanent magnets 112 of arbitrary neighborhood, air gap is entered again after a part of magnetic line of force of main pole permanent magnet 112 is connected with auxiliary permanent magnet 113, the working point of main pole permanent magnet 112 can be significantly improved like this, improve the torque of permagnetic synchronous motor 100.Meanwhile, due to the raising of the working point of main pole permanent magnet 112, the anti-demagnetization capability of main pole permanent magnet 112 is improved, reduces the demagnetization risk that permagnetic synchronous motor 100 runs under bad working environments.
See Fig. 2 to Fig. 5, as a kind of embodiment, the quantity of main pole permanent magnet 112 is more than or equal to four.The number of main pole permanent magnet 112 is arranged to more than four, can better makes permagnetic synchronous motor 100 have poly-magnetic effect, realize higher torque and export.In the present embodiment, the quantity of main pole permanent magnet 112 is six, and six main pole permanent magnets 112 are extremely relative with N according to N pole, and S pole and S pole are oppositely arranged.Auxiliary permanent magnet 113 is between two main pole permanent magnets 112 of arbitrary neighborhood, and N pole or the S pole of two main pole permanent magnets 112 of corresponding arbitrary neighborhood are distinguished in the N pole of auxiliary permanent magnet 113 and S pole.
As a kind of embodiment, in the symmetrical center line of auxiliary permanent magnet 113 between two main pole permanent magnets 112 of arbitrary neighborhood.Auxiliary permanent magnet 113 is different from main pole permanent magnet 112, the number of poles of permagnetic synchronous motor 100 can be made to increase if increase main pole permanent magnet 112, although auxiliary permanent magnet 113 is also tangential magnetized permanent magnet, but increase auxiliary permanent magnet 113 and do not affect permagnetic synchronous motor 100 number of poles, only helpful with demagnetization to the efficiency of permagnetic synchronous motor 100.Time in the symmetrical center line of auxiliary permanent magnet 113 between two main pole permanent magnets 112 of arbitrary neighborhood, raising and the anti-demagnetization effectiveness of the efficiency of permagnetic synchronous motor 100 are obvious.
Further, auxiliary permanent magnet 113 departs from the symmetrical center line between two described main pole permanent magnets 112 of arbitrary neighborhood, and auxiliary permanent magnet 113 is towards the direction skew at different main pole permanent magnet 112 place of adjacent magnetic pole.Research finds the region that the magnetic line of force of permanent magnet machine rotor 110 always concentrates on auxiliary permanent magnet 113 surface identical with the magnetic pole of main pole permanent magnet 112 and is oppositely arranged, namely the region on front side of the main pole permanent magnet 112 shown in Fig. 3 is the magnetic line of force comparatively multizone P, and it is less to be oppositely arranged regional magnetic force line on the surface that auxiliary permanent magnet 113 is different with the magnetic pole of main pole permanent magnet 112, the region namely on rear side of main pole permanent magnet 112 is the less region Q of the magnetic line of force.By the symmetrical center line of auxiliary permanent magnet 113 from two main pole permanent magnets 112 of arbitrary neighborhood is offset, and the tangential permanent magnet side be oppositely arranged towards the surface that the magnetic pole of auxiliary permanent magnet 113 is different skew, the area of the magnetic line of force compared with multizone P can be increased, make permanent magnet machine rotor 110 can produce more air-gap flux, improve the Driving Torque of permagnetic synchronous motor 100 under unitary current, and the magnetic line of force is arranged on the front side of permanent magnet machine rotor 110 direction of rotation compared with multizone, better effect can be produced like this.
As a kind of embodiment, the coercive force of auxiliary permanent magnet 113 is less than the coercive force of main pole permanent magnet 112.Research finds, the working point of auxiliary permanent magnet 113 is always higher than the working point of main pole permanent magnet 112, and this makes auxiliary permanent magnet 113 inconsistent with the anti-demagnetization capability of main pole permanent magnet 112, reduces the anti-demagnetization capability of permagnetic synchronous motor 100.Be less than the coercive force of main pole permanent magnet 112 by the coercive force of auxiliary permanent magnet 113, the working point of the working point of auxiliary permanent magnet 113 and main pole permanent magnet 112 can be made to be close, to promote the anti-demagnetization capability of permagnetic synchronous motor 100 entirety.Certainly, can also be less than main pole permanent magnet 112 by auxiliary permanent magnet 113 along the width M in rotor core 111 circumferential direction makes the working point of the working point of auxiliary permanent magnet 113 and main pole permanent magnet 112 be close along the width L in rotor core 111 circumferential direction, to promote the anti-demagnetization capability of permagnetic synchronous motor 100 entirety.
As a kind of embodiment, auxiliary permanent magnet 113 is less than main pole permanent magnet 112 along rotor core 111 length G in the radial direction along rotor core 111 length B in the radial direction.In the running of permagnetic synchronous motor 100, some magnetic linkage of main pole permanent magnet 112 enters air gap after connecting with auxiliary permanent magnet 113, the end of the adjacent auxiliary permanent magnet 113 of another part magnetic linkage on front side of the direction of rotation being positioned at main pole permanent magnet 112 enters air gap, by auxiliary permanent magnet 113 is less than main pole permanent magnet 112 along rotor core 111 length G in the radial direction along rotor core 111 length B in the radial direction, the magnetic flux of this part another part magnetic linkage can be made can not to decline because of saturation effects.
As a kind of embodiment, main pole permanent magnet 112 placement parallel with auxiliary permanent magnet 113 of arbitrary neighborhood, and main pole permanent magnet 112 surface different with the magnetic pole of auxiliary permanent magnet 113 fits, main pole permanent magnet 112 has identical magnetic pole with auxiliary permanent magnet 113, to expand the area of the magnetic line of force compared with multizone, promote the efficiency of permagnetic synchronous motor 100.The direction of rotation of permanent magnet machine rotor 110 is from the side of the main pole permanent magnet 112 put together towards a sideway swivel of auxiliary permanent magnet 113, and namely the direction of rotation of permanent magnet machine rotor 110 is that front side from from the rear side of main pole permanent magnet 112 to this main pole permanent magnet 112 rotates.For the main pole permanent magnet 120 of a position, the direction of arrow shown in Fig. 3 is the direction of rotation of rotor core 111, the front side of main pole permanent magnet 112 and the magnetic pole of rear side are respectively N pole and S pole, and the magnetic pole of the auxiliary permanent magnet 113 of the front side of main pole permanent magnet 112 is respectively S pole and N pole.Now, the N pole of main pole permanent magnet 112 and the S pole of auxiliary permanent magnet 113 fit, and then the front side of the set of permanent magnets of a position and the magnetic pole of rear side are respectively N pole and S pole.Certainly, in order to expand the area of the magnetic line of force compared with multizone further, promote the efficiency of permagnetic synchronous motor 100, also the auxiliary permanent magnet 113 of arbitrary neighborhood can be put together with main pole permanent magnet 112, in order to simplify production technology, also can be integrally combined with main pole permanent magnet 112 by auxiliary permanent magnet 113.
See Fig. 1, the permagnetic synchronous motor 100 of the utility model one embodiment comprises stators and rotators, and rotor is the permanent magnet machine rotor 110 in above-mentioned any embodiment.At least comprise and there is the permanent magnet machine rotor 110 of main pole permanent magnet 112 and auxiliary permanent magnet 113 and the stator 120 outside permanent magnet machine rotor 110.Stator 120 comprises stator core 121 and stator winding 122, and stator winding 122 is arranged on stator core 121.Between two main pole permanent magnets 112 of the arbitrary neighborhood of permanent magnet machine rotor 110, auxiliary permanent magnet 113 is installed, the working point of main pole permanent magnet 112 can be significantly improved, permanent magnet machine rotor 110 is made to produce more magnetic linkage in stator 120 side, improve the utilance of air-gap flux, promote the Driving Torque of permagnetic synchronous motor 100, improve the efficiency of permagnetic synchronous motor 100.Meanwhile, due to the raising of the working point of main pole permanent magnet 112, the anti-demagnetization capability of main pole permanent magnet 112 is improved, reduces the demagnetization risk that permagnetic synchronous motor 100 runs under bad working environments.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a permanent magnet machine rotor, is characterized in that, comprising:
Rotor core (111);
Tangential magnetized main pole permanent magnet (112), described main pole permanent magnet (112) is arranged along the radial direction of described rotor core (111), the quantity of described main pole permanent magnet (112) is equal with the number of poles of permagnetic synchronous motor, multiple described main pole permanent magnet (112) is uniformly distributed along the circumferential direction of described rotor core (111), and two of arbitrary neighborhood immediate surperficial magnetic poles of described main pole permanent magnet (112) are identical; And
Tangential magnetized auxiliary permanent magnet (113), described auxiliary permanent magnet (113) is arranged along the radial direction of described rotor core (111), and described auxiliary permanent magnet (113) is positioned between two described main pole permanent magnets (112) of arbitrary neighborhood.
2. permanent magnet machine rotor according to claim 1, is characterized in that, in the symmetrical center line between two described main pole permanent magnets (112) that described auxiliary permanent magnet (113) is positioned at arbitrary neighborhood.
3. permanent magnet machine rotor according to claim 1, it is characterized in that, described auxiliary permanent magnet (113) departs from the symmetrical center line between two described main pole permanent magnets (112) of arbitrary neighborhood, and described auxiliary permanent magnet (113) is to the direction skew at different described main pole permanent magnet (112) place of adjacent magnetic pole.
4. permanent magnet machine rotor according to claim 1, is characterized in that, the coercive force of described auxiliary permanent magnet (113) is less than the coercive force of described main pole permanent magnet (112).
5. permanent magnet machine rotor according to claim 1, it is characterized in that, described auxiliary permanent magnet (113) is less than described main pole permanent magnet (112) along the width in described rotor core (111) circumferential direction along the width in described rotor core (111) circumferential direction.
6. permanent magnet machine rotor according to claim 1, it is characterized in that, described auxiliary permanent magnet (113) is less than described main pole permanent magnet (112) along described rotor core (111) length in the radial direction along described rotor core (111) length in the radial direction.
7. permanent magnet machine rotor according to claim 1, is characterized in that, the quantity of described main pole permanent magnet (112) is more than or equal to four.
8. permanent magnet machine rotor according to claim 1, it is characterized in that, described main pole permanent magnet (112) and described auxiliary permanent magnet (113) the parallel placement of arbitrary neighborhood, and the different surface of the magnetic pole of described main pole permanent magnet (112) and described auxiliary permanent magnet (113) fits.
9. permanent magnet machine rotor according to claim 1, is characterized in that, described main pole permanent magnet (112) and the described auxiliary permanent magnet (113) of arbitrary neighborhood are integrated.
10. a permagnetic synchronous motor, comprises stators and rotators, and described stator is positioned at the outside of described rotor, it is characterized in that, described rotor is the permanent magnet machine rotor (110) described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362228.5U CN204696827U (en) | 2015-05-29 | 2015-05-29 | Permanent magnet machine rotor and permagnetic synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362228.5U CN204696827U (en) | 2015-05-29 | 2015-05-29 | Permanent magnet machine rotor and permagnetic synchronous motor |
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| CN204696827U true CN204696827U (en) | 2015-10-07 |
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| CN201520362228.5U Expired - Fee Related CN204696827U (en) | 2015-05-29 | 2015-05-29 | Permanent magnet machine rotor and permagnetic synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016192581A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| WO2016192582A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN107017756A (en) * | 2017-05-22 | 2017-08-04 | 张民方 | A kind of magnetic motivation |
| CN107394923A (en) * | 2017-08-30 | 2017-11-24 | 广东威灵电机制造有限公司 | Rotor core and rotor |
-
2015
- 2015-05-29 CN CN201520362228.5U patent/CN204696827U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016192581A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| WO2016192582A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN106300728A (en) * | 2015-05-29 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet machine rotor and permagnetic synchronous motor |
| CN106300728B (en) * | 2015-05-29 | 2019-09-03 | 珠海格力电器股份有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN107017756A (en) * | 2017-05-22 | 2017-08-04 | 张民方 | A kind of magnetic motivation |
| CN107394923A (en) * | 2017-08-30 | 2017-11-24 | 广东威灵电机制造有限公司 | Rotor core and rotor |
| CN107394923B (en) * | 2017-08-30 | 2020-03-06 | 广东威灵电机制造有限公司 | Rotor core and rotor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20210529 |