CN203722446U - Permanent-magnet synchronous motor - Google Patents
Permanent-magnet synchronous motor Download PDFInfo
- Publication number
- CN203722446U CN203722446U CN201420086302.0U CN201420086302U CN203722446U CN 203722446 U CN203722446 U CN 203722446U CN 201420086302 U CN201420086302 U CN 201420086302U CN 203722446 U CN203722446 U CN 203722446U
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- rotor
- permanent magnet
- permanent
- axis
- stator
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a permanent-magnet synchronous motor which includes a stator and a rotor. The cross section of each stator tooth is basically shaped like a Chinese character 'gong' and each is provided with three grooves and each groove is open-shaped. Every two adjacent stator teeth in the circumferential direction are installed at the inner circumference of a stator yoke symmetrically relative to a center line of the two stator teeth so that a stator iron core is formed. An even number of permanent-magnet grooves are uniformly arranged in a rotor iron core and each permanent-magnet groove is distributed symmetrically on each rotor magnetic pole relative to each rotor d axis, axes q being the boundaries, wherein a half permanent-magnet groove of each permanent-magnet groove, at the left of the d axis, forms an N shape and a half permanent-magnet groove at the right of the d axis is symmetrical with and also in communication with a corresponding half permanent-magnet groove at the left of the d axis relative to the d axis of a rotor magnetic pole. The permanent-magnet grooves are filled with permanent magnets so that magnetic poles appeared on each rotor pole are arrayed in an NS alternating method. The permanent-magnet synchronous motor reduces iron loss and copper loss and saves binding time so that the efficiency of the motor is improved.
Description
Technical field
The utility model relates to a kind of motor, relates in particular to a kind of permanent magnet synchronous motor.
Background technology
The excitation source of permanent magnet synchronous motor is permanent magnet, simple in structure, power density is high, and volume is relatively little.Especially have the permagnetic synchronous motor of the rotor of permanent magnet submerged type, because it has saliency, therefore overload capacity is strong, apply more extensive.But because the d axle magnetic resistance of the permanent magnet synchronous motor with saliency is greater than q axle magnetic resistance, d axle synchronous reactance is less than q axle synchronous reactance, there is larger demagnetization danger in permanent magnet in the time of load running.In addition, in the time of load running, quadrature axis magnetic circuit is saturated, and iron loss is large, and motor efficiency is not high.
The three-phase electric machine stator of prior art adopts the method for distributed winding to wind the line to iron core conventionally, and on the circumference of all windings in same Radius, therefore, the length that winding overhang stretches out iron core needs long enough to dodge other windings of intersection.In the time that end winding extension elongation increases, copper consumption will increase, and not only consume copper material, also consume electric energy, and copper loss is large, affects motor efficiency.On the other hand, owing to being positioned at, the coil extension elongation of end is longer, in order to be fixed in the coil of end, need to manually carry out colligation to it, and this has reduced production efficiency greatly.
Utility model content
The purpose of this utility model is the problem existing for prior art, provides one to greatly reduce demagnetization, iron loss and copper loss, thus the permanent magnet synchronous motor of enhancing productivity.
For achieving the above object, permanent magnet synchronous motor of the present utility model, comprise stator and rotor, the stator tooth that described stator comprises stator yoke and connects as one with stator yoke, described stator yoke cross section is annular, stator tooth is distributed on the interior week of described stator yoke, described stator tooth cross section is bow font substantially, there is the first groove, the second groove, and three-flute, each groove is all uncovered shape, circumferentially adjacent stator tooth is arranged on the interior week of stator yoke in the mode of the center line symmetry between the two, just to bend font and instead to bend the alternatively distributed mode of font and install, form stator core, the top of described stator tooth does not connect mutually, to reserve space between described stator tooth, three-phase coil is wound on respectively in above-mentioned three grooves, do not interfere with each other
As preferably, described rotor is permanent magnet submerged formula rotor, rotor includes rotor core, uniform rotor bar in the outer rim of rotor core, in rotor core, be evenly provided with even number permanent magnet trough, each described permanent magnet trough is symmetrical with respect to place rotor magnetic pole d axis on each rotor magnetic pole, and taking rotor magnetic pole q axis as boundary, wherein said each permanent magnet trough is positioned at half permanent magnet trough on the rotor magnetic pole d axis left side and divides three broken lines, be communicated with for N shape, half permanent magnet trough on rotor magnetic pole d axis the right and half permanent magnet trough on the rotor magnetic pole d axis left side are with respect to the d axis symmetry of rotor magnetic pole, and be communicated with half permanent magnet trough on the d axis left side, in described permanent magnet trough, fill permanent magnet, the magnetic pole NS presenting on each rotor pole is staggered.
The utility model is owing to having adopted technique scheme, further increase the magnetic flux density of rotor magnetic pole, because the magnetic flux density near d axle is much larger than the magnetic flux density of q axle, can make Distribution of Magnetic Field in air gap closer to sine wave, further reduce the content of high order harmonic component, and q axle magnetic flux density is little, also reduce the risk of q axle Flux saturation, reduce iron loss.Meanwhile, the utility model, owing to having adopted technique scheme, has been avoided the overlapping and colligation of stator winding, thereby has reduced the use amount of winding, and then has reduced copper loss, has improved electric efficiency and has saved the colligation time.
Brief description of the drawings
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.
Fig. 1 is the stator profile of permanent magnet synchronous motor;
Fig. 2 is the structure chart of permanent magnet synchronous motor stator tooth;
Fig. 3 is the structural representation of permanent-magnet synchronous motor rotor;
In figure, 10, stator tooth; 11, stator yoke; 101, stator tooth the first groove 102, stator tooth the second groove; 103, stator tooth three-flute; 21, rotor bar; 22, permanent magnet trough.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, permanent magnet synchronous motor of the present utility model comprises stator and rotor.Stator comprises that stator yoke 11 and stator tooth 10 are connected to one, and stator yoke cross section is annular, and stator tooth 10 is arranged on the interior week of stator yoke.The cross section of stator tooth 10 is arc type substantially, has the first groove 101, the second groove 102 and three-flute 103, and each groove is all uncovered shape, facilitates the coiling of coil, and because bow font stator tooth 10 has natural concaveconvex structure, coil is not easy to come off.Circumferentially adjacent stator tooth 10 is arranged on the interior week of stator yoke 11 in the mode of the center line symmetry between the two,, just to bend font and instead to bend the alternatively distributed mode of font and install, forms stator core.Stator tooth 10 tops do not connect mutually, to reserve space between stator tooth.Three-phase coil 12 is wound on respectively in above-mentioned three grooves, do not interfere with each other, thereby winding overhang does not need deliberately to reserve longer length.
Owing to having adopted the stator tooth of bow font, avoid the overlapping and colligation of stator winding, thereby reduced the use amount of winding, and then reduced copper loss, improve electric efficiency and saved the colligation time.
Referring to Fig. 3, the rotor of permanent magnet synchronous motor of the present utility model is permanent magnet submerged formula rotor, uniform rotor bar 21 in the outer rim of rotor core, in described rotor core, be evenly provided with even number permanent magnet trough 22, each described permanent magnet trough 22 is symmetrical with respect to each rotor d axis on each rotor magnetic pole, and taking q axis q as boundary, wherein said each permanent magnet trough is positioned at half permanent magnet trough on the d axis left side and divides three broken lines, be communicated with for N shape, half permanent magnet trough on d axis the right and half permanent magnet trough on the left side are with respect to the d axis symmetry of rotor magnetic pole, and be communicated with half permanent magnet trough on the d axis left side, the interior filling permanent magnet of described permanent magnet trough 22, the magnetic pole NS presenting on each rotor pole is staggered.
Owing to having adopted the permanent magnet trough of said structure, the magnetic flux density of close d axle is much larger than the magnetic flux density of q axle, can make Distribution of Magnetic Field in air gap closer to sine wave, further reduce the content of high order harmonic component, and q axle magnetic flux density is little, also the risk that has reduced q axle Flux saturation, has reduced iron loss.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (2)
1. a permanent magnet synchronous motor, comprise stator and rotor, it is characterized in that, the stator tooth that described stator comprises stator yoke and connects as one with stator yoke, described stator yoke cross section is annular, stator tooth is distributed on the interior week of described stator yoke, described stator tooth cross section is bow font substantially, there is the first groove, the second groove, and three-flute, each groove is all uncovered shape, circumferentially adjacent stator tooth is arranged on the interior week of stator yoke in the mode of the center line symmetry between the two, just to bend font and instead to bend the alternatively distributed mode of font and install, the top of described stator tooth does not connect mutually, to reserve space between described stator tooth, three-phase coil is wound on respectively in above-mentioned three grooves without interfering with each other.
2. a kind of permanent magnet synchronous motor according to claim 1, it is characterized in that, described rotor is permanent magnet submerged formula rotor, rotor includes rotor core, uniform rotor bar in the outer rim of rotor core, in rotor core, be evenly provided with even number permanent magnet trough, each described permanent magnet trough is symmetrical with respect to place rotor magnetic pole d axis on each rotor magnetic pole, and taking rotor magnetic pole q axis as boundary, wherein said each permanent magnet trough is positioned at half permanent magnet trough on the rotor magnetic pole d axis left side and divides three broken lines, be communicated with for N shape, half permanent magnet trough on rotor magnetic pole d axis the right and half permanent magnet trough on the rotor magnetic pole d axis left side are with respect to the d axis symmetry of rotor magnetic pole, and be communicated with half permanent magnet trough on the d axis left side, in described permanent magnet trough, fill permanent magnet, the magnetic pole NS presenting on each rotor pole is staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086302.0U CN203722446U (en) | 2014-02-28 | 2014-02-28 | Permanent-magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086302.0U CN203722446U (en) | 2014-02-28 | 2014-02-28 | Permanent-magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722446U true CN203722446U (en) | 2014-07-16 |
Family
ID=51161569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420086302.0U Expired - Fee Related CN203722446U (en) | 2014-02-28 | 2014-02-28 | Permanent-magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149823A (en) * | 2018-11-07 | 2019-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
-
2014
- 2014-02-28 CN CN201420086302.0U patent/CN203722446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149823A (en) * | 2018-11-07 | 2019-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and motor |
| CN109149823B (en) * | 2018-11-07 | 2023-11-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and 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: 20140716 Termination date: 20150228 |
|
| EXPY | Termination of patent right or utility model |