CN202395553U - Rotor structure of multiple segment staggered type permanent magnet synchronous motor - Google Patents
Rotor structure of multiple segment staggered type permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN202395553U CN202395553U CN2011204967218U CN201120496721U CN202395553U CN 202395553 U CN202395553 U CN 202395553U CN 2011204967218 U CN2011204967218 U CN 2011204967218U CN 201120496721 U CN201120496721 U CN 201120496721U CN 202395553 U CN202395553 U CN 202395553U
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- permanent magnet
- staggers
- permanent
- rotor
- synchronous motor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A rotor structure of a multiple segment staggered type permanent magnet synchronous motor comprises a rotor core formed by laminating a plurality of rotor sheets, a permanent magnet embedded in the rotor core and a rotor main shaft; the rotor of the motor has a built-in structure and the permanent magnet is embedded in the rotor core; simultaneously, the permanent magnet is divided into N segments in the axial direction of the motor; and two adjacent permanent magnets in the axial direction are staggered from each other by a certain angle. The rotor structure of the multiple segment staggered type permanent magnet synchronous motor is capable of obviously improving the counter electromotive force of the motor, reducing the torque of toothed groove, reducing the torque ripples and stray losses of the motor and realizing high efficiency, low vibration and low noise of a compression system, based on the multiple segment staggered structure of the permanent magnet.
Description
Technical field
The utility model relates to a kind of rotor structure of compressor, relates in particular to a kind of multistage formula permanent-magnet synchronous motor rotor structure that staggers.
Background technology
The noise of compressor wherein comes from the permanent magnet synchronous motor as the compressor power source greatly.And magneto is because the influences such as non-sineization of cogging torque and counter potential waveform, thereby can make the load torque pulsation increase vibrating noise also strengthens, thereby influences the performance of whole compressor system.In order to reduce harmonic wave, reduce noise vibration, the method that adopts usually is the frame mode of skewed stator slot or skewed-rotor etc.Adopt the mode of skewed stator slot can make the stator slot utilance reduce, the coiling difficulty strengthens, and is unfavorable for that the technology of automation coiling realizes; And the mode of skewed-rotor (see figure 1) need be reversed certain angle with magnetic shoe, though can reach same effect, makes such distortion magnetic shoe difficulty and strengthens, and is difficult for processing.Therefore, be necessary to do further improvement and perfect.
The utility model content
The purpose of the utility model aims to provide a kind of obvious sinusoidal degree that improves back electromotive force; Reduce cogging torque; Reduce torque pulsation and stray loss; The formula permanent-magnet synchronous motor rotor structure thereby the multistage efficient, even running of realizing compressibility staggers is to overcome weak point of the prior art.
By a kind of multistage of this purpose design formula permanent-magnet synchronous motor rotor structure that staggers, include the rotor core that is overrided to form by the multi-disc rotor punching, be built in rotor core inner permanent magnet and rotor main shaft; Its architectural feature is that motor rotor adopts built-in structure, and permanent magnet is built in rotor core; Simultaneously, permanent magnet along motor shaft to being divided into the N section, and adjacent vertically two permanent magnets certain angle that staggers.
Said adjacent vertically two permanent magnets angle that staggers is α/(N-1); Said angle [alpha] is the maximum of first section permanent magnet and the N section permanent magnet angle that staggers, and the general value of α is between 1 ° to 30 °.Said permanent magnet segments N generally gets between 2 to 5.
The corresponding permanent magnet of said rotor core also segmentation and the equal angular that staggers to embed permanent magnet.
Said permanent magnet can adopt radially or the parallel magnetization mode.
Said permanent magnet can adopt rectangle or magnetic shoe shape structure.
The utility model can significantly improve the counter potential waveform of motor through the wrong electrode structure of permanent magnet multistage, reduces cogging torque, reduces the torque pulsation and the stray loss of motor, realizes the high efficiency of compressibility, low vibration, low noise.
Description of drawings
Fig. 1 is the oblique electrode structure sketch map of permanent magnet in the prior art.
Fig. 2 is the utility model one embodiment multistage formula permagnetic synchronous motor structural representation that staggers.
Fig. 3 is the embodiment multistage formula magnet structure axial view that staggers.
Fig. 4 is the embodiment multistage formula magnet structure vertical view that staggers.
Among the figure: 1 is first section permanent magnet, and 2 is second section permanent magnet, and 3 is rotor core, and 4 is rotor main shaft.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Referring to Fig. 2-Fig. 4, a kind of multistage formula permanent-magnet synchronous motor rotor structure that staggers includes the rotor core 3 that is overrided to form by the multi-disc rotor punching, is built in rotor core 3 inner permanent magnet, rotor main shaft 4; Motor rotor adopts built-in structure, and permanent magnet is built in rotor core 3; Simultaneously, permanent magnet along motor shaft to being divided into the N section, and adjacent vertically two permanent magnets certain angle that staggers.In the present embodiment, to being divided into two sections, and adjacent vertically two permanent magnets angle that staggers is α to permanent magnet along motor shaft, and this angle [alpha] is the maximum of first section permanent magnet 1 and second section permanent magnet 2 angle that staggers.The general value of α is between 1 ° to 30 °.Rotor core 3 corresponding permanent magnets also segmentation and the equal angular that staggers to embed permanent magnet.Permanent magnet can adopt radially or the parallel magnetization mode.Permanent magnet can adopt rectangle or magnetic shoe shape structure.
Above embodiment is used for explaining the utility model; And be not the qualification that is used as the utility model; As long as in the practicalness scope of the utility model, all will fall in the claim scope of the utility model the variation of the above embodiment, modification etc.
Claims (6)
1. multistage formula permanent-magnet synchronous motor rotor structure that staggers includes the rotor core (3) that is overrided to form by the multi-disc rotor punching, is built in rotor core (3) inner permanent magnet and rotor main shaft (4); It is characterized in that motor rotor adopts built-in structure, permanent magnet is built in rotor core (3); Simultaneously, permanent magnet along motor shaft to being divided into the N section, and adjacent vertically two permanent magnets certain angle that staggers.
2. the multistage according to claim 1 formula permanent-magnet synchronous motor rotor structure that staggers is characterized in that adjacent vertically two permanent magnets angle that staggers is α/(N-1); Said angle [alpha] is first section permanent magnet (1) and the maximum of the N section permanent magnet angle that staggers, and the general value of α is between 1 ° to 30 °.
3. the multistage according to claim 1 and 2 formula permanent-magnet synchronous motor rotor structure that staggers is characterized in that said permanent magnet segments N generally gets between 2 to 5.
4. the multistage according to claim 3 formula permanent-magnet synchronous motor rotor structure that staggers, it is characterized in that the corresponding permanent magnet of said rotor core (3) also segmentation and the equal angular that staggers to embed permanent magnet.
5. the multistage according to claim 4 formula permanent-magnet synchronous motor rotor structure that staggers is characterized in that said permanent magnet can adopt radially or the parallel magnetization mode.
6. the multistage according to claim 5 formula permanent-magnet synchronous motor rotor structure that staggers is characterized in that said permanent magnet can adopt rectangle or magnetic shoe shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204967218U CN202395553U (en) | 2011-12-02 | 2011-12-02 | Rotor structure of multiple segment staggered type permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204967218U CN202395553U (en) | 2011-12-02 | 2011-12-02 | Rotor structure of multiple segment staggered type permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395553U true CN202395553U (en) | 2012-08-22 |
Family
ID=46670453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204967218U Expired - Lifetime CN202395553U (en) | 2011-12-02 | 2011-12-02 | Rotor structure of multiple segment staggered type permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009417A (en) * | 2013-01-28 | 2015-10-28 | 三菱电机株式会社 | Permanent magnet type rotating electric machine |
-
2011
- 2011-12-02 CN CN2011204967218U patent/CN202395553U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009417A (en) * | 2013-01-28 | 2015-10-28 | 三菱电机株式会社 | Permanent magnet type rotating electric machine |
| CN105009417B (en) * | 2013-01-28 | 2018-05-01 | 三菱电机株式会社 | Permanent magnet type rotating electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |