CN209748282U - Rotor for reducing torque fluctuation of synchronous motor main shaft - Google Patents
Rotor for reducing torque fluctuation of synchronous motor main shaft Download PDFInfo
- Publication number
- CN209748282U CN209748282U CN201920922550.7U CN201920922550U CN209748282U CN 209748282 U CN209748282 U CN 209748282U CN 201920922550 U CN201920922550 U CN 201920922550U CN 209748282 U CN209748282 U CN 209748282U
- Authority
- CN
- China
- Prior art keywords
- magnetic sheet
- magnetic
- utmost point
- rotor
- rotor base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 10
- 238000010030 laminating Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model relates to a rotor, noise abatement's effect. The utility model discloses a reduce undulant rotor of synchronous machine main shaft torque, including rotor base, rotor base bonds outward has two sets of magnetic sheets, rotor base overcoat is equipped with the sleeve pipe, the sheathed tube inside wall of magnetic sheet laminating, every group the magnetic sheet includes N utmost point magnetic sheet and S utmost point magnetic sheet, N utmost point magnetic sheet and S utmost point magnetic sheet are along rotor base outer peripheral surface each other and are separated annular arrangement, every N utmost point magnetic sheet includes a main magnetic sheet and two vice magnetic sheets, the arc length of main magnetic sheet is greater than vice magnetic sheet, two vice magnetic sheet is located one side of main magnetic sheet respectively. The N pole is formed by combining 1 main magnetic sheet and 2 auxiliary magnetic sheets, and the distribution arrangement of the magnetic sheets is improved, so that the air gap magnetic density of the permanent magnet motor is larger, the iron loss is smaller, the magnetic gathering efficiency of each magnetic pole can be improved, the cogging torque can be effectively weakened, and the torque fluctuation of the motor can be improved.
Description
Technical Field
The utility model relates to a rotor, more specifically say, it relates to a rotor that reduces synchronous machine main shaft torque ripple.
background
At present, as shown in fig. 1, it can be seen that a magnetic circuit of a synchronous motor is composed of two groups of magnetic sheets, each group of magnetic sheets comprises an N-pole magnetic sheet 3 and an S-pole magnetic sheet 4, and the problem of noise and vibration increase is caused by torque fluctuation of the synchronous motor due to cogging torque between a stator tooth wall and a permanent magnet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rotor that reduces synchronous machine main shaft torque ripple has the effect that reduces torque ripple, noise abatement to the not enough of prior art existence.
In order to achieve the technical purpose, the utility model provides a following technical scheme: the utility model provides a reduce undulant rotor of synchronous machine main shaft torque, includes rotor base, rotor base bonds outward has two sets of magnetic sheets, rotor base overcoat is equipped with the sleeve pipe, the sheathed tube inside wall of magnetic sheet laminating, every group the magnetic sheet includes N utmost point magnetic sheet and S utmost point magnetic sheet, N utmost point magnetic sheet and S utmost point magnetic sheet are separated each other along rotor base outer peripheral surface and are circularized the range, every N utmost point magnetic sheet includes a main magnetic sheet and two vice magnetic sheets, the arc length of main magnetic sheet is greater than vice magnetic sheet, two vice magnetic sheet is located one side of main magnetic sheet respectively.
By adopting the technical scheme, the N pole is formed by combining 1 main magnetic sheet and 2 auxiliary magnetic sheets, the distribution arrangement of the magnetic sheets is improved, the air gap flux density of the permanent magnet motor is larger, the iron loss is smaller, the magnetic gathering efficiency of each magnetic pole can be improved, the cogging torque can be effectively weakened, and the torque fluctuation of the motor can be improved.
Drawings
FIG. 1 is a schematic diagram of a prior art in this embodiment;
FIG. 2 is a schematic view showing an overall structure of a rotor according to the present embodiment;
FIG. 3 is a schematic diagram of the present embodiment showing the arrangement of magnetic sheets.
In the figure, 1, a rotor base; 2. a sleeve; 3. an N pole magnetic sheet; 4. an S pole magnetic sheet; 31. a main magnetic sheet; 32. and an auxiliary magnetic sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example (b): the utility model provides a reduce undulant rotor of synchronous machine main shaft torque, as shown in figure 2, includes rotor base 1, and rotor base 1 bonds outward has two sets of magnetic sheets, and 1 overcoat of rotor base is equipped with sleeve pipe 2, and magnetic sheet laminating sleeve pipe 2's inside wall, sleeve pipe 2 have guaranteed the magnetic sheet steadiness with the magnetic sheet chucking on rotor base 1 surface, can not become flexible.
As shown in fig. 3, each set of magnetic pieces includes N-pole magnetic pieces 3 and S-pole magnetic pieces 4, and the N-pole magnetic pieces 3 and S-pole magnetic pieces 4 are arranged at intervals in a ring shape along the outer circumferential surface of the rotor base 1. Each N-pole magnetic piece 3 includes a main magnetic piece 31 and two sub-magnetic pieces 32, the arc length of the main magnetic piece 31 is longer than that of the sub-magnetic pieces 32, and the two sub-magnetic pieces 32 are respectively located at one side of the main magnetic piece 31.
The N-pole magnetic plate 3 includes a main magnetic plate 31 and two sub-magnetic plates 32, which are magnetized in different directions, in a manner called a bohua compound magnetic plate array. The magnetic sheets with different magnetizing directions are arranged according to a certain rule by improvement, so that magnetic lines of force can be converged at one side of the magnetic sheet array, and the magnetic lines of force are weakened at the other side of the magnetic sheet array, and a relatively ideal unilateral magnetic field is obtained. Compared with the traditional permanent magnet motor, the permanent magnet motor adopting the multi-pair pole Bohua compound array structure has the air gap magnetic field which is more close to sinusoidal distribution. Under the condition that the using amount of the permanent magnet material is not changed, the air gap magnetic density of the Bohua compound array permanent magnet motor is larger, the iron loss is smaller, the magnetism gathering efficiency can be improved, the cogging torque can be effectively weakened, and the torque fluctuation of the motor is improved.
Claims (1)
1. A rotor for reducing torque ripple of a main shaft of a synchronous motor comprises a rotor base body (1), and is characterized in that: rotor base (1) outer bonding has two sets of magnetic sheets, rotor base (1) overcoat is equipped with sleeve pipe (2), the inside wall of magnetic sheet laminating sleeve pipe (2), every group the magnetic sheet includes N utmost point magnetic sheet (3) and S utmost point magnetic sheet (4), N utmost point magnetic sheet (3) and S utmost point magnetic sheet (4) are along rotor base (1) outer peripheral surface each other and are separated and are circularized and arrange, every N utmost point magnetic sheet (3) include a main magnetic sheet (31) and two vice magnetic sheets (32), the arc length of main magnetic sheet (31) is greater than vice magnetic sheet (32), two vice magnetic sheet (32) are located one side of main magnetic sheet (31) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920922550.7U CN209748282U (en) | 2019-06-18 | 2019-06-18 | Rotor for reducing torque fluctuation of synchronous motor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920922550.7U CN209748282U (en) | 2019-06-18 | 2019-06-18 | Rotor for reducing torque fluctuation of synchronous motor main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209748282U true CN209748282U (en) | 2019-12-06 |
Family
ID=68723868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920922550.7U Expired - Fee Related CN209748282U (en) | 2019-06-18 | 2019-06-18 | Rotor for reducing torque fluctuation of synchronous motor main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209748282U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112851A (en) * | 2019-06-18 | 2019-08-09 | 无锡博华机电有限公司 | A kind of rotor reducing the fluctuation of synchronous motor main shaft torque |
| CN112134375A (en) * | 2020-09-14 | 2020-12-25 | 广州市昊志机电股份有限公司 | Stator module and motor |
-
2019
- 2019-06-18 CN CN201920922550.7U patent/CN209748282U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112851A (en) * | 2019-06-18 | 2019-08-09 | 无锡博华机电有限公司 | A kind of rotor reducing the fluctuation of synchronous motor main shaft torque |
| CN112134375A (en) * | 2020-09-14 | 2020-12-25 | 广州市昊志机电股份有限公司 | Stator module and motor |
| CN112134375B (en) * | 2020-09-14 | 2021-09-21 | 广州市昊志机电股份有限公司 | Stator module and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |