CN210640801U - Novel rotor punching sheet structure of asynchronous starting permanent magnet synchronous motor - Google Patents
Novel rotor punching sheet structure of asynchronous starting permanent magnet synchronous motor Download PDFInfo
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- CN210640801U CN210640801U CN201921252548.XU CN201921252548U CN210640801U CN 210640801 U CN210640801 U CN 210640801U CN 201921252548 U CN201921252548 U CN 201921252548U CN 210640801 U CN210640801 U CN 210640801U
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Abstract
The utility model discloses a novel asynchronous starting PMSM rotor towards piece structure, including the rotor core towards the piece, set up squirrel cage strip and rotor magnet steel on the rotor core towards the piece, the squirrel cage strip is double-deck squirrel cage strip, constitute by two mounting holes that communicate each other, and set up the socket towards piece outward flange department at the rotor core, socket and mounting hole communicate, the rotor core sets up the magnet steel cell type group of shape of falling V-arrangement towards on the piece anchor ring, set up the cavity of holding rotor magnet steel on the magnet steel cell type, the rotor core is towards seting up the screw rod hole on the piece anchor ring, a plurality of inlayer recesses are seted up towards the piece inward flange to the rotor core, the air gap flux density wave form of adjustment motor, reduce. The motor rotor punching structure can reduce the noise and vibration of the motor under the condition that the motor has good starting performance and output performance.
Description
Technical Field
The utility model belongs to the technical field of asynchronous starting PMSM technique and specifically relates to a novel asynchronous starting PMSM rotor towards piece structure.
Background
With the rapid development of socioeconomic, the demand of electricity in the whole society shows explosive increase, for example, compared with 2016, the electricity consumption in 2017 nationwide is 63077 hundred million kilowatt hours, and the electricity consumption is increased by 6.6% on a par; in 2018, the total electricity consumption in China is 68449 hundred million kilowatt-hours. Compared with the condition that the electricity consumption of the resident side accounts for 36.6 percent of the electricity consumption of the whole society, the proportion of the industrial electricity consumption in China is up to more than 65 percent, but researches show that the electricity utilization efficiency in the field is lower and the electricity is seriously wasted, for example, the electricity consumption in the form of heat occupies 3 to 8 percent of the electricity consumption. Thus, the limited energy supply leads to the increasingly prominent regional energy supply contradiction.
The continuous perfection of the current motor production and manufacturing technology improves the output performance of a motor driving system to a great extent, saves partial energy supply and relieves the energy demand load in the industrial field. Due to the characteristics of high body height efficiency and high power density, the rare earth permanent magnet synchronous motor has attracted extensive attention and research of motor research developers. Up to now, asynchronous starting permanent magnet synchronous motors have appeared due to the continuous updating and development of technology and the increasing requirements on motor performance. The asynchronous starting permanent magnet synchronous motor is a novel energy-saving high-efficiency motor, is different from a common motor, on one hand, a rotor is provided with a permanent magnet, the structure is simple, and the asynchronous starting permanent magnet synchronous motor has higher motor performance under the same condition; on the other hand, different from a speed-regulating permanent magnet synchronous motor, the squirrel cage bar is arranged on the rotor, the self-starting capability is realized under a certain condition, and the motor has the advantages of stronger operation stability, higher efficiency, lower cost and the like, and can meet the ever-increasing market demand. However, the air gap flux density has a great relationship with the operation performance of the motor, and the generated harmonic waves greatly and seriously affect the performance of the motor under the normal operation condition of the common asynchronous permanent magnet synchronous motor.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: based on the problems and the defects of the prior art, a novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor is designed, so that the motor has good starting performance and output performance, and the noise and vibration of the motor can be reduced.
The utility model provides a technical scheme that its technical problem adopted is: a novel rotor punching structure of an asynchronous starting permanent magnet synchronous motor comprises a rotor core punching sheet, a squirrel cage bar and rotor magnetic steel, wherein the squirrel cage bar and the rotor magnetic steel are arranged on the rotor core punching sheet, the squirrel cage bar is arranged on the outer annular surface of the rotor core punching sheet, the squirrel cage bar is a double-layer squirrel cage bar, the output of a larger starting rotating speed is realized, the squirrel cage bar is composed of two mutually communicated mounting holes, a socket is arranged at the outer edge of the rotor core punching sheet, the socket is communicated with the mounting holes, a magnetic steel groove group is arranged on the annular surface of the rotor core punching sheet and used for mounting the rotor magnetic steel, the magnetic steel groove group is composed of two magnetic steel groove types which are arranged in an inverted V shape, an outer convex part is arranged in the length direction of the magnetic steel groove type to form a cavity for holding the rotor magnetic steel, at least, a plurality of inner layer grooves are formed in the inner edge of the rotor core stamped sheet, the air gap flux density waveform of the motor is adjusted, and noise and vibration of the motor are reduced.
Furthermore, the squirrel cage bar annular array is arranged on the outer ring surface of the rotor core stamped sheet, and the pitch angle is 8 degrees and is 45 in total.
Furthermore, the mounting holes of the squirrel cage bars are circular holes, the diameter of each circular hole is 10mm, the distance from the center of each first circular hole to the center of each rotor core stamped piece is 220mm, and the distance from the center of each second circular hole to the center of each rotor core stamped piece is 236 mm.
Further, two the angle of expansion of the magnetic steel groove type be 135 degrees, set up the magnetic bridge that separates between two magnetic steel groove types, the width that separates the magnetic bridge is 2mm, guarantees that the motor well exports torque performance and lower magnetic leakage phenomenon.
Furthermore, the magnetic steel groove group annular array is arranged on the inner ring surface of the rotor core punching sheet, the number of the magnetic steel groove group annular array is 8, each magnetic steel groove is provided with 1 cavity, and 1 rotor magnetic steel is embedded in each cavity.
Furthermore, fillers are paved between the cavity and the rotor magnetic steel to improve the stability of the rotor magnetic steel.
Further, the filler is high-temperature-resistant insulating fiber.
Furthermore, the screw holes are set to be 4 uniformly distributed on the ring surface of the rotor core punching sheet.
Further, the inner layer grooves are arc-shaped, the annular arrays are arranged on the inner edge of the rotor core stamped sheet, the number of the inner layer grooves is 8, the arc radius is 20mm, and the arc angle is 100 degrees.
The utility model has the advantages that the utility model discloses a novel asynchronous starting permanent magnet synchronous motor rotor sheet structure, firstly, the rotor double-squirrel cage structure realizes great starting speed output, improves starting performance; secondly, the V-shaped rotor magnetic steel groove structure improves the performance of the motor under the rated working condition and realizes synchronous rotating speed by combining with a motor stator winding; the magnetic isolation bridge between the groove types ensures good output torque performance and lower magnetic flux leakage of the motor; thirdly, the rotor inner layer groove structure improves the harmonic wave in the air gap, so that the air gap waveform is similar to a sine wave type under the working condition, and the noise and vibration of the motor are reduced; in addition, high-temperature resistant insulating fibers are attached to the notches of the magnetic steel sheets as fillers, so that the stability of the magnetic steel sheets is improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of a magnetic steel slot group;
in the figure, 1, a rotor core punching sheet, 2, a squirrel cage bar, 21, a first circular hole, 22, a second circular hole, 23, a socket, 3, a magnetic steel groove type, 31, a magnetic isolation bridge, 32, a cavity, 4, rotor magnetic steel, 5, an inner layer groove and 6, a screw hole are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor comprises a rotor core punching sheet 1, a squirrel cage bar 2 and a rotor magnetic steel punching sheet 4 which are arranged on the rotor core punching sheet 1, a stator core punching sheet 2 and a rotor magnetic steel punching sheet 32 which are arranged on an inner ring surface of a rotor core 1 and are used for reducing the high-temperature impact resistance of a rotor core 32, the rotor core punching sheet structure comprises a rotor core punching sheet 1, a squirrel cage bar 2 and a rotor magnetic steel punching sheet 4 which are arranged on the rotor core punching sheet 1, a stator core punching sheet 631 made of a 50W470 material is adopted, a rotor core 2 ring array is arranged on an outer ring surface of the rotor core 1, a pitch angle α is 8 degrees and is 45 degrees, a squirrel cage bar 2 is made of a purple copper material, the rotor core bar 2 is a double-layer magnetic steel punching sheet, the rotor core punching sheet structure realizes larger starting rotating speed output, the rotor punching sheet structure is characterized in that the rotor core punching sheet punching.
The utility model discloses among mainly used wind power generation's the asynchronous start PMSM of three-phase, the wind energy conversion who realizes renewable energy is the electric energy to improve energy utilization and reduce people's dependence to thermal power. The motor rotor has wide application prospect in a plurality of fields such as transportation, aerospace and the like, and is one of the research directions in the manufacture of high-efficiency motors in recent years.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a novel asynchronous starting PMSM rotor punching structure, characterized by: comprises a rotor iron core punching sheet (1), a squirrel cage bar (2) arranged on the rotor iron core punching sheet (1) and rotor magnetic steel (4), the squirrel-cage bars (2) are arranged on the outer ring surface of the rotor core punching sheet (1), the squirrel-cage bars (2) are double-layer squirrel-cage bars and are composed of two mutually communicated mounting holes, a socket (23) is arranged at the outer edge of the rotor iron core punching sheet (1), the socket (23) is communicated with the mounting hole, a magnetic steel groove group is arranged on the ring surface of the rotor iron core punching sheet (1) for mounting rotor magnetic steel (4), the magnetic steel groove group consists of two magnetic steel groove types (3) which are arranged in an inverted V shape, an outer convex part is arranged in the length direction of the magnetic steel groove type (3) to form a cavity (32) for accommodating the rotor magnetic steel (4), at least two screw holes (6) are arranged on the ring surface of the rotor iron core punching sheet (1), the inner edge of the rotor core punching sheet (1) is provided with a plurality of inner-layer grooves (5).
2. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor according to the claim 1 is characterized in that the squirrel cage bars (2) are arranged on the outer annular surface of the rotor core punching (1) in an annular array, and the pitch angle α is 8 degrees and is 45 in total.
3. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 1, characterized in that: the squirrel cage bar (2) mounting hole be the circular port, the diameter is 10mm, first circular port (21) center-to-center distance of piece (1) is 220mm, second circular port (22) center-to-center distance of piece (1) is 236 mm.
4. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor is characterized in that the unfolding angle β of the two magnetic steel groove types (3) is 135 degrees, a magnetic isolation bridge (31) is arranged between the two magnetic steel groove types (3), and the width of the magnetic isolation bridge (31) is 2 mm.
5. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 1, characterized in that: the magnetic steel groove group annular array is arranged on the inner ring surface of the rotor core punching sheet (1), the number of the magnetic steel groove group annular array is 8, each magnetic steel groove type (3) is provided with 1 cavity (32), and 1 rotor magnetic steel (4) is embedded in each cavity (32).
6. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 5, characterized in that: and fillers are paved between the cavity (32) and the rotor magnetic steel (4) so as to improve the stability of the rotor magnetic steel (4).
7. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 6, characterized in that: the filler is high-temperature resistant insulating fiber.
8. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 1, characterized in that: and the screw holes (6) are uniformly distributed on the ring surface of the rotor core punching sheet (1) in 4.
9. The novel rotor punching structure of the asynchronous starting permanent magnet synchronous motor as claimed in claim 1, characterized in that: inner layer recess (5) establish to the arc, annular array arranges the inward flange at rotor core towards piece (1), quantity is 8, and arc radius is 20mm, and arc angle theta is 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921252548.XU CN210640801U (en) | 2019-08-05 | 2019-08-05 | Novel rotor punching sheet structure of asynchronous starting permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921252548.XU CN210640801U (en) | 2019-08-05 | 2019-08-05 | Novel rotor punching sheet structure of asynchronous starting permanent magnet synchronous motor |
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| Publication Number | Publication Date |
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| CN210640801U true CN210640801U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921252548.XU Active CN210640801U (en) | 2019-08-05 | 2019-08-05 | Novel rotor punching sheet structure of asynchronous starting permanent magnet synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117526658A (en) * | 2023-12-28 | 2024-02-06 | 厚华(天津)动力科技有限公司 | Hybrid non-magnetic motor |
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2019
- 2019-08-05 CN CN201921252548.XU patent/CN210640801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117526658A (en) * | 2023-12-28 | 2024-02-06 | 厚华(天津)动力科技有限公司 | Hybrid non-magnetic motor |
| CN117526658B (en) * | 2023-12-28 | 2024-04-05 | 厚华(天津)动力科技有限公司 | Hybrid non-magnetic motor |
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