CN211089263U - Rotor structure of low-speed large-torque dovetail groove type salient pole synchronous reluctance motor - Google Patents
Rotor structure of low-speed large-torque dovetail groove type salient pole synchronous reluctance motor Download PDFInfo
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- CN211089263U CN211089263U CN201922400549.0U CN201922400549U CN211089263U CN 211089263 U CN211089263 U CN 211089263U CN 201922400549 U CN201922400549 U CN 201922400549U CN 211089263 U CN211089263 U CN 211089263U
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Abstract
The utility model provides a low-speed big moment of torsion forked tail slot type salient pole synchronous reluctance motor rotor structure belongs to electric motor rotor technical field. The utility model discloses constitute by permanent magnet, rotor magnetic pole and rotor yoke portion, rotor yoke portion is whole circular structure, and the equipartition has the forked tail on the outer curved surface of rotor yoke portion, and the one end of rotor magnetic pole is equipped with the dovetail, is connected by forked tail and dovetail between rotor magnetic pole and the rotor yoke portion, and the permanent magnet is inlayed on the rotor magnetic pole. The utility model discloses salient pole structural strength is very high to can not receive the too big influence of torque. The rotor cost of the synchronous reluctance motor can be effectively reduced by adopting a salient pole type structure. Due to the increase of the motor torque, the rotor punching sheet adopts a salient pole type structure, the structural strength of the rotor can be enhanced, in addition, the rotor core is divided into two parts, one part is a magnetic pole with a dovetail groove, and the other part is a full circle with a dovetail. The two parts are connected by a dovetail groove and a dovetail. The two parts are separately processed, so that the processing difficulty is reduced.
Description
Technical Field
The utility model relates to a low-speed big moment of torsion forked tail slot type salient pole synchronous reluctance motor rotor structure belongs to electric motor rotor technical field.
Background
The synchronous reluctance motor is developed rapidly in an energy-saving large environment, and a high-speed motor belt is required to be used under some working conditions because the required rotating speed is not high. However, because the rotor punching sheet of the non-salient pole type synchronous reluctance motor needs a magnetic barrier and a magnetic isolation bridge in design, and the magnetic resistance needs to be reduced, the connection part of the punching sheet is narrow, the stress of the connection part of the magnetic barrier of the rotor is concentrated and narrow, and thus, when the torque of the non-salient pole type rotor structure is too large, the rotor core is easy to deform. And the magnetic barrier position of the rotor is very small, the normal punching process can not meet the strict process requirement, and the magnetic barrier on the rotor is easy to damage when a sizing die is adopted for punching, so that only a better punching method can be adopted, and the punching cost of the punching sheet of the motor can be increased.
Disclosure of Invention
The utility model aims at solving the problem that above-mentioned prior art exists, and then provide a low-speed big moment of torsion forked tail slot type salient pole synchronous reluctance motor rotor structure.
The utility model aims at realizing through the following technical scheme:
the utility model provides a big moment of torsion forked tail slot type salient pole synchronous reluctance motor rotor structure of low-speed comprises permanent magnet, rotor magnetic pole and rotor yoke portion, rotor yoke portion is whole circular structure, and the equipartition has the dovetail on the outer curved surface of rotor yoke portion, and the one end of rotor magnetic pole is equipped with the dovetail, is connected by dovetail and dovetail between rotor magnetic pole and the rotor yoke portion, and the permanent magnet is inlayed on the rotor magnetic pole.
The utility model discloses a salient pole formula structure, the problem of mentioning in the background art just can finely be solved, and salient pole structural strength is very high to can not receive the too big influence of torque. The salient pole type structure is simple and easy to process, and the cost of the synchronous reluctance motor rotor can be effectively reduced by adopting the salient pole type structure. Due to the increase of the motor torque, the rotor punching sheet adopts a salient pole type structure, the structural strength of the rotor can be enhanced, in addition, the rotor core is divided into two parts, one part is a magnetic pole with a dovetail groove, and the other part is a full circle with a dovetail. The two parts are connected by a dovetail groove and a dovetail. The two parts are separately processed, so that the processing difficulty is reduced.
Drawings
Fig. 1 is the schematic diagram of the rotor structure of the low-speed large-torque dovetail slot type salient pole synchronous reluctance motor of the utility model.
In the figure, reference numerals 1 denote permanent magnets, 2 denote rotor poles, and 3 denote rotor yoke portions.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the rotor structure of the low-speed large-torque dovetail slot type salient pole synchronous reluctance motor related to the embodiment comprises a permanent magnet 1, a rotor magnetic pole 2 and a rotor yoke 3, wherein the rotor yoke 3 is of a full-circle structure, dovetail joints are uniformly distributed on the outer curved surface of the rotor yoke 3, a dovetail groove is formed in one end of the rotor magnetic pole 2, the rotor magnetic pole 2 and the rotor yoke 3 are connected through the dovetail joints and the dovetail groove, and the permanent magnet 1 is embedded on the rotor magnetic pole 2.
A wide variety of permanent magnets including ferrites may be used for the permanent magnet 1.
20 utmost point 48 grooves, the span of the stator mode of arranging of power for 15kW salient pole formula synchronous reluctance motor is 1, let in three-phase frequency conversion alternating current at stator winding, stator winding circular telegram produces the magnetic field, according to the minimum principle of magnetic resistance, the magnetic force line is always closed through the route of minimum magnetic resistance, according to the impact ratio of electric motor rotor, can produce a tangential magnetic pulling force, make the rotor position of motor rotation in order to reach minimum magnetic resistance, rotor structure salient pole ratio is big, the tangential magnetic pulling force of minimum magnetic resistance that receives is big more, when the motor uses salient pole rotor structural design low-speed big torque motor, can be so that the maximum torque of output is bigger, motor stator uses the genuine fraction groove can add the ferrite at the rotor top and reduce the magnetic pressure drop and add the air gap magnetic barrier and reduce the magnetic leakage in ferrite both sides, increase salient pole ratio.
The rotors adopt skewed slots to reduce cogging torque as shown in fig. 1. The magnetic pole insertion can adopt a segmented magnetic pole mode.
According to the structure, the motor with more poles and larger torque can be designed according to the motor by selecting proper slot matching and reasonable winding arrangement, and the center height of the motor can be designed to be larger. The structure is very suitable for a low-speed large-torque motor.
This embodiment has cancelled the stator chute, adopts rotor oblique pole mode to reduce the harmonic, has reduced the stator lamination technology degree of difficulty: the permanent magnet embedded in the rotor uses ferrite, so that the cost of the motor is reduced; the development cost of the rotor punching die is greatly reduced; the storage and transportation difficulty and the laminating difficulty of the rotor punching sheets are reduced; can produce low-speed multi-pole motor
The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides a big moment of torsion forked tail slot type salient pole synchronous reluctance motor rotor structure of low-speed comprises permanent magnet (1), rotor magnetic pole (2) and rotor yoke portion (3), its characterized in that, rotor yoke portion (3) are whole circular structure, and the equipartition has the forked tail on the outer curved surface of rotor yoke portion (3), and the one end of rotor magnetic pole (2) is equipped with the dovetail, is connected by forked tail and dovetail between rotor magnetic pole (2) and rotor yoke portion (3), and permanent magnet (1) is inlayed on rotor magnetic pole (2).
2. A low-speed high-torque dovetail-slot salient pole synchronous reluctance machine rotor structure according to claim 1, wherein said permanent magnet (1) is ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400549.0U CN211089263U (en) | 2019-12-27 | 2019-12-27 | Rotor structure of low-speed large-torque dovetail groove type salient pole synchronous reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400549.0U CN211089263U (en) | 2019-12-27 | 2019-12-27 | Rotor structure of low-speed large-torque dovetail groove type salient pole synchronous reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211089263U true CN211089263U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922400549.0U Active CN211089263U (en) | 2019-12-27 | 2019-12-27 | Rotor structure of low-speed large-torque dovetail groove type salient pole synchronous reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211089263U (en) |
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2019
- 2019-12-27 CN CN201922400549.0U patent/CN211089263U/en active Active
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