CN204243939U - A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor - Google Patents
A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor Download PDFInfo
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- CN204243939U CN204243939U CN201420694548.6U CN201420694548U CN204243939U CN 204243939 U CN204243939 U CN 204243939U CN 201420694548 U CN201420694548 U CN 201420694548U CN 204243939 U CN204243939 U CN 204243939U
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- permanent magnet
- synchronous motor
- magnet body
- rotor
- tangential
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Abstract
The utility model discloses a kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor, belong to permagnetic synchronous motor technical field, in order to solve, existing permanent-magnetic synchronous motor rotor leakage field is large, permanent magnet utilance is low, affects the problem such as motor performance and efficiency and designs.Permanent-magnetic synchronous motor rotor comprises rotor core, and rotor core is radially evenly equipped with even number n tangential permanent magnet body, the identical polar of adjacent two tangential permanent magnet bodies is relative; The both sides, one end of each tangential permanent magnet body inside rotor core are respectively symmetrically arranged with a radial permanent magnet body; Two radial permanent magnet dignity folded between adjacent two tangential permanent magnet bodies have identical polar to stator direction, and have every magnetic bridge between these two radial permanent magnet bodies.Also disclose a kind of permagnetic synchronous motor comprising above-mentioned rotor.The utility model reduces the leakage field of tangential permanent magnet body inside rotor, improves permanent magnet utilance, improves electric efficiency and electric machine structure intensity.
Description
Technical field
The utility model belongs to permagnetic synchronous motor technical field, particularly relates to a kind of permanent-magnetic synchronous motor rotor and has the permagnetic synchronous motor of this rotor structure.
Background technology
The motor of the tangential magnetization configuration of permanent magnet is owing to having " poly-magnetic " effect, higher air gap flux density can be produced compared with radial structure, make motor have larger torque/current ratio and torque/volume ratio, be applied to the occasions such as servo system, electric traction, office automation, household electrical appliance more and more.
But tangential permanent magnet motor is easily forming leakage field near the inner side of rotating shaft, in order to reduce leakage field, need to arrange inside rotor every magnetic bridge, even if arrange every magnetic bridge, still there is leakage field inside rotor large, permanent magnet utilance is low, affects the problem of motor performance and electric efficiency, and the increase of leakage field also can bring the vibration & noise problem of motor.
Utility model content
One of the purpose of this utility model proposes a kind ofly to reduce the leakage field of tangential permanent magnet body inside rotor, improves rotor mechanical intensity, improve the permanent-magnetic synchronous motor rotor of electric efficiency.
Two of the purpose of this utility model proposes a kind of leakage field reducing tangential permanent magnet body, increases the permanent magnet flux linkage of motor, improves the permanent-magnetic synchronous motor rotor of radial permanent magnet body utilance.
Three of the purpose of this utility model proposes a kind of anti-demagnetization performance improving tangential permanent magnet body, reduces the permanent-magnetic synchronous motor rotor of the brow leakage of tangential permanent magnet body.
Four of the purpose of this utility model proposes a kind of permanent-magnetic synchronous motor rotor slowing down the demagnetization of radial permanent magnet body.
Five of the purpose of this utility model proposes a kind of leakage field reducing radial permanent magnet body, improves the permanent-magnetic synchronous motor rotor of rotor mechanical intensity.
Six of the purpose of this utility model proposes a kind of minimizing motor flux leakage, improves permanent magnet utilance, improve the permagnetic synchronous motor of electric efficiency and electric machine structure intensity.
For reaching this object, the utility model by the following technical solutions:
The utility model provides a kind of permanent-magnetic synchronous motor rotor, comprises rotor core, described rotor core is radially evenly equipped with even number n tangential permanent magnet body, and the identical polar of adjacent two described tangential permanent magnet bodies is relative;
The both sides, one end of each described tangential permanent magnet body inside described rotor core are respectively symmetrically arranged with a radial permanent magnet body;
Two folded between adjacent two described tangential permanent magnet bodies described radial permanent magnet dignity have identical polar to stator direction, and have every magnetic bridge between these two radial permanent magnet bodies.
Further, the shape of cross section of described radial permanent magnet body is plate shaped or arc.
Further, the ratio M/S of the thickness M of described radial permanent magnet body and the thickness S of described tangential permanent magnet body is 0.35-1.5.
Further, have space between two described radial permanent magnet bodies of one end bilateral symmetry setting of described tangential permanent magnet body, the ratio L/S of the length L in described space and the thickness S of described tangential permanent magnet body is 0.7-1.5.
Further, the ratio G/M of the thickness M of the described width G every magnetic bridge and described radial permanent magnet body is 0.05-0.4.
Further, the described width every magnetic bridge diminishes to rotor gradually by inside rotor.
Further, described even number n be more than or equal to 4 even number.
The utility model additionally provides a kind of permagnetic synchronous motor, comprises stator, also comprises permanent-magnetic synchronous motor rotor described above.
The beneficial effects of the utility model are:
(1) the utility model provides a kind of permanent-magnetic synchronous motor rotor, by two radial permanent magnet bodies being arranged on the both sides of a tangential permanent magnet, utilize a part of leakage field of radial permanent magnet body can make every magnetic bridge comparatively saturated, reduce the leakage field of tangential permanent magnet body inside rotor, add the main flux that tangential permanent magnet body produces, simultaneously, radial permanent magnet body also can provide a part of main flux, the air gap flux density of expanded motor, improve electric efficiency, and make rotor have good mechanical strength.
(2) the ratio M/S of the thickness M of radial permanent magnet body and the thickness S of tangential permanent magnet body is arranged in the scope of 0.35-1.5, significantly can reduce the leakage field of tangential permanent magnet body, well supplement air-gap field, the magnetic linkage that rotor permanent magnetism is produced on stator winding is in higher level, namely make motor have larger permanent magnet flux linkage, improve the utilance of radial permanent magnet body simultaneously.
(3) the ratio L/S of the gap lengths L had between two radial permanent magnet bodies one end bilateral symmetry of tangential permanent magnet body arranged and the thickness S of tangential permanent magnet body is arranged in the scope of 0.7-1.5, the anti-demagnetization performance of tangential permanent magnet body can be improved, motor is made to have good anti-demagnetization capability, the brow leakage of tangential permanent magnet body can also be reduced, make motor flux leakage less.
(4) by being arranged in the scope of 0.05-0.4 every the ratio G/M of the width G of magnetic bridge and the thickness M of radial permanent magnet body, can ensure that the leakage field of radial permanent magnet body is less, slowing down the demagnetization of radial permanent magnet body simultaneously.
(5) width every magnetic bridge can be unequal, and the width namely every magnetic bridge diminishes to rotor gradually by inside rotor, effectively improves the mechanical strength of rotor when the leakage field of guarantee radial permanent magnet body is less.
(6) the utility model additionally provides a kind of permagnetic synchronous motor comprising above-mentioned permanent-magnetic synchronous motor rotor structure, not only makes motor flux leakage reduce, and improves permanent magnet utilance, improves electric efficiency and electric machine structure intensity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the permanent-magnetic synchronous motor rotor of the utility model embodiment one;
Fig. 2 is the structural representation of the permanent-magnetic synchronous motor rotor of the utility model embodiment two;
Fig. 3 is the structural representation of the permanent-magnetic synchronous motor rotor of the utility model embodiment three;
Fig. 4 is the structural representation of the permanent-magnetic synchronous motor rotor of the utility model embodiment four;
Fig. 5 is the partial enlarged drawing at A place in Fig. 4;
Fig. 6 is the structural representation of the permagnetic synchronous motor of the utility model embodiment five;
Fig. 7 is that the permanent magnet thickness ratio M/S of the utility model embodiment one is to the effect diagram of magnetic linkage;
Fig. 8 is that the radial permanent magnet body distance ratio L/S of the utility model embodiment one is to demagnetization and the effect diagram of leakage field.
In figure, 1, rotor core; 11, tangential permanent magnet body; 12, radial permanent magnet body; 2, every magnetic bridge; 3, space; 4, stator.
Embodiment
The technical solution of the utility model is further illustrated by specific embodiment below in conjunction with accompanying drawing.
Embodiment one:
A kind of permanent-magnetic synchronous motor rotor that the utility model provides, the structure of this permanent-magnetic synchronous motor rotor is as Fig. 1, shown in Fig. 7 and Fig. 8, it comprises rotor core 1, rotor core 1 is radially evenly equipped with 6 tangential permanent magnet bodies 11, the identical polar of adjacent two tangential permanent magnet bodies 11 is relative, that is, the side of a tangential permanent magnet body 11 is N pole (or S pole), near this side and another tangential permanent magnet body 11 side is corresponding thereto similarly N pole (or S pole).The both sides, one end of each tangential permanent magnet body 11 inside rotor core 1 are respectively symmetrically arranged with a radial permanent magnet body 12.Two radial permanent magnet bodies 12 folded between adjacent two tangential permanent magnet bodies 11 have identical polar in the face of stator direction, this polarity is identical with the polarity of the contiguous side of adjacent two tangential permanent magnet bodies 11, simultaneously, have every magnetic bridge 2 between these folded two radial permanent magnet bodies 12, in the present embodiment every the width of magnetic bridge 2 by all equal to rotor inside rotor.
By two radial permanent magnet bodies 12 being arranged on the both sides of a tangential permanent magnet 11, utilize a part of leakage field of radial permanent magnet body 12 can make every magnetic bridge 2 comparatively saturated, reduce the leakage field of tangential permanent magnet body 11 inside rotor, add the main flux that tangential permanent magnet body 11 produces, meanwhile, radial permanent magnet body 12 also can provide a part of main flux, the air gap flux density of expanded motor, improve electric efficiency, and make rotor have good mechanical strength.
In the present embodiment, the shape of cross section of each radial permanent magnet body 12 is plate shaped, further, this is plate shaped is a right-angled trapezium, the shorter upper base of right-angled trapezium length is positioned at inside rotor, and longer the going to the bottom of length is positioned at outside rotor, and the oblique waist of right-angled trapezium is away from tangential permanent magnet body 11.
The leakage field of ratio M/S to tangential permanent magnet body of the thickness M of radial permanent magnet body 12 and the thickness S of tangential permanent magnet body 11 has a significant impact.As shown in Figure 7, ratio M/S [0.1,0.35) scope time, tangential permanent magnet body drain magnetic is comparatively serious; When ratio M/S is increased to [0.35,1.5] scope time, significantly reduce the leakage field of tangential permanent magnet body, well supplement air-gap field, the magnetic linkage that rotor permanent magnetism is produced on stator winding is in higher level, thus make motor have larger permanent magnet flux linkage, improve the utilance of radial permanent magnet body simultaneously; When ratio M/S continue to be increased to (1.5,3.25] scope time, little to the permanent magnet flux linkage contribution of motor, and the thickness increasing radial permanent magnet body 12 can increase manufacturing cost, causes waste.Therefore, ratio M/S is preferably the scope of 0.35-1.5.
Have space 3 between two radial permanent magnet bodies 12 of one end bilateral symmetry setting of tangential permanent magnet body 11, the ratio L/S of the length L in space 3 and the thickness S of tangential permanent magnet body 11 has a significant impact the demagnetization current of tangential permanent magnet body and leakage flux.As shown in Figure 8, ratio L/S [0,0.7) scope time, namely two radial permanent magnet bodies 12 are at a distance of too small, cause radial permanent magnet body 12 and tangential permanent magnet body 11 to have certain coincidence, easily cause tangential permanent magnet body 11 end, when stator applies outside opposing magnetic field, serious demagnetization occurs; When ratio L/S is increased to [0.7,1.5] scope, greatly slow down tangential permanent magnet body 11 end local demagnetization, improve the anti-demagnetization performance of tangential permanent magnet body, make motor have good anti-demagnetization capability; When ratio L/S continues to be increased to (1.5,1.9) scope, two radial permanent magnet bodies 12 are at a distance of excessive, and tangential permanent magnet body 11 forms leakage field in hole 3, can not well reduce its end leakage.Therefore, ratio L/S is preferably the scope of 0.7-1.5.
In like manner, in order to reduce the leakage field of radial permanent magnet body as much as possible, slowing down the demagnetization of radial permanent magnet body, being preferably arranged on the scope of 0.05-0.4 every the ratio G/M of the width G of magnetic bridge 2 and the thickness M of radial permanent magnet body 12.
Embodiment two:
Present embodiments provide a kind of permanent-magnetic synchronous motor rotor, the structure of this permanent-magnetic synchronous motor rotor is substantially identical with the rotor structure described in embodiment one, does not repeat them here.
Difference part is: as shown in Figure 2, the shape of cross section of each radial permanent magnet body is circular arc, further, this circular arc is a circular arc vertical bar, circular arc vertical bar has two the circular arc sides be oppositely arranged and two that are oppositely arranged straight shape sides, and two circular arc sides are arranged along periphery of rotor, two straight shape sides are arranged along rotor radial.
Embodiment three:
Present embodiments provide a kind of permanent-magnetic synchronous motor rotor, the structure of this permanent-magnetic synchronous motor rotor is substantially identical with the rotor structure described in embodiment one, does not repeat them here.
Difference part is: as shown in Figure 3, the shape of cross section of each radial permanent magnet body is bent arc, further, this bent arc is an arc knee, arc knee has two suite arc-shaped side edges, wherein one group is two the bent arc-shaped side edges being oppositely arranged and arranging along periphery of rotor, and another group is for being oppositely arranged and two bent arc-shaped side edges of arranging along rotor radial.
Embodiment four:
Present embodiments provide a kind of permanent-magnetic synchronous motor rotor, the structure of this permanent-magnetic synchronous motor rotor is substantially identical with the rotor structure described in embodiment two, does not repeat them here.
Difference part is: slightly make improvements on the shape of cross section basis of radial permanent magnet body described in embodiment two, as shown in Figure 4 and Figure 5, the width every magnetic bridge had between two radial permanent magnet bodies folded between adjacent two tangential permanent magnet bodies is unequal, namely the width every magnetic bridge diminishes to rotor gradually by inside rotor, further increases the mechanical strength of rotor when the leakage field of guarantee radial permanent magnet body is less.
Embodiment five:
Present embodiments provide a kind of permagnetic synchronous motor, this permanent magnetic synchronous motor structure as shown in Figure 6, it comprise stator 4 and as arbitrary in embodiment one to embodiment four as described in permanent-magnetic synchronous motor rotor.The present embodiment not only reduces motor flux leakage, and improves permanent magnet utilance, improves electric efficiency and electric machine structure intensity.
The shape of cross section of the radial permanent magnet body described by above embodiment is not limited to above-mentioned shape, can also be other shapes.Tangential permanent magnet body number radially uniform on rotor core is not limited to 6, can also be other even numbers, be preferably greater than or equal to the even number of 4, and concrete quantity can need to design according to real work.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection range by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection range of the present utility model.
Claims (8)
1. a permanent-magnetic synchronous motor rotor, comprise rotor core (1), it is characterized in that: described rotor core (1) is radially evenly equipped with even number n tangential permanent magnet body (11), the identical polar of adjacent two described tangential permanent magnet bodies (11) is relative;
A radial permanent magnet body (12) is respectively symmetrically arranged with near the both sides, one end of each described tangential permanent magnet body (11) of described rotor core (1) inner side;
Two described radial permanent magnet bodies (12) folded between adjacent two described tangential permanent magnet bodies (11) have identical polar in the face of stator direction, and have every magnetic bridge (2) between these two radial permanent magnet bodies (12).
2. permanent-magnetic synchronous motor rotor according to claim 1, is characterized in that: the shape of cross section of described radial permanent magnet body (12) is plate shaped or arc.
3. permanent-magnetic synchronous motor rotor according to claim 1 and 2, is characterized in that: the ratio M/S of the thickness M of described radial permanent magnet body (12) and the thickness S of described tangential permanent magnet body (11) is 0.35-1.5.
4. permanent-magnetic synchronous motor rotor according to claim 1 and 2, it is characterized in that: have space (3) between two described radial permanent magnet bodies (12) of one end bilateral symmetry setting of described tangential permanent magnet body (11), the ratio L/S of the length L of described space (3) and the thickness S of described tangential permanent magnet body (11) is 0.7-1.5.
5. permanent-magnetic synchronous motor rotor according to claim 1 and 2, is characterized in that: the ratio G/M of the thickness M of the described width G every magnetic bridge (2) and described radial permanent magnet body (12) is 0.05-0.4.
6. permanent-magnetic synchronous motor rotor according to claim 5, is characterized in that: the described width every magnetic bridge (2) diminishes to rotor gradually by inside rotor.
7. permanent-magnetic synchronous motor rotor according to claim 1, is characterized in that: described even number n be more than or equal to 4 even number.
8. a permagnetic synchronous motor, comprises stator (4), it is characterized in that: also comprise the permanent-magnetic synchronous motor rotor as described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694548.6U CN204243939U (en) | 2014-11-18 | 2014-11-18 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694548.6U CN204243939U (en) | 2014-11-18 | 2014-11-18 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204243939U true CN204243939U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420694548.6U Expired - Fee Related CN204243939U (en) | 2014-11-18 | 2014-11-18 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204243939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485762A (en) * | 2014-11-18 | 2015-04-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor of permanent magnet synchronous motor and permanent magnet synchronous motor provided with same |
-
2014
- 2014-11-18 CN CN201420694548.6U patent/CN204243939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485762A (en) * | 2014-11-18 | 2015-04-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor of permanent magnet synchronous motor and permanent magnet synchronous motor provided with same |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20211118 |