CN111969743A - Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor - Google Patents
Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor Download PDFInfo
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- CN111969743A CN111969743A CN202010846244.7A CN202010846244A CN111969743A CN 111969743 A CN111969743 A CN 111969743A CN 202010846244 A CN202010846244 A CN 202010846244A CN 111969743 A CN111969743 A CN 111969743A
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- rotor
- permanent magnet
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- punching sheet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention discloses a built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, a rotor and a motor, wherein a rotor punching sheet body is circular, 4 groups of permanent magnet segmented V-shaped magnetic circuit structures which are uniformly distributed along the circumference are arranged on the rotor body, the single side of each V-shaped magnetic circuit structure is separated by a segmented magnetic separation bridge, rectangular permanent magnet grooves are arranged on two sides of each segmented magnetic separation bridge and used for mounting permanent magnets, process grooves are arranged at two ends of each upper permanent magnet groove and two ends of each lower permanent magnet groove, an iron core section between each upper process groove and the outer circle of the rotor punching sheet is a main magnetic separation bridge, and the lower process grooves on two sides of each V-shaped magnetic circuit. The rectangular permanent magnet slot is divided into two sections by utilizing the segmented magnetic isolation bridge, so that the stress at the main magnetic isolation bridge and the auxiliary magnetic isolation bridge is shared and reduced, and the mechanical strength of the rotor punching sheet is increased; the invention omits a reinforcing rib structure on the existing rotor punching sheet, and is convenient for the industrial production of the motor; the sectional magnetic isolation bridge, the main magnetic isolation bridge and the auxiliary magnetic isolation bridge are reasonable in size, and the air gap magnetic field waveform is close to sine wave distribution.
Description
Technical Field
The invention relates to a built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, a rotor and a motor, and belongs to the technical field of motor manufacturing.
Background
The motor is an electromagnetic device which converts or transmits electric energy according to the law of electromagnetic induction, or converts one form of electric energy into another form of electric energy. The electric motor converts electric energy into mechanical energy (commonly called as a motor), and the generator converts mechanical energy into electric energy. Its main function is to generate driving torque as power source of electric appliance or various machines.
High speed motors are generally motors with a rotational speed of more than 10000 r/min. Because the rotating speed is high and the volume is far smaller than that of a common motor with the same power, the motor has the advantages of high power density, material saving, high transmission efficiency, low noise, quick dynamic response and the like. The permanent magnet synchronous motor has the advantages of no need of excitation of the rotor, high power density, high efficiency and power factor and the like, and is particularly suitable for being used as a high-speed motor.
In order to enhance the mechanical strength of the rotor sheet of the motor during high-speed operation, an auxiliary magnetic isolation bridge or a reinforcing rib structure is generally added on the rotor sheet of the built-in V-shaped permanent magnet synchronous motor, the auxiliary magnetic isolation bridge has a simple structure, but the mechanical strength of the rotor sheet cannot meet the requirement when the mechanical strength exceeds a certain rotating speed, and the reinforcing rib structure can meet the requirement but has a complex structure and is not beneficial to large-scale production of the motor.
For the reasons, it is necessary to improve the structure of the rotor sheet of the current built-in V-type permanent magnet synchronous motor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, a rotor and a motor, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: a built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet comprises a rotor punching sheet body and a permanent magnet segmented V-shaped magnetic circuit structure arranged on the rotor punching sheet body; the rotor body is provided with 4 groups of permanent magnet segmented V-shaped magnetic circuit structures which are uniformly distributed along the circumference, one side of each permanent magnet segmented V-shaped magnetic circuit structure is separated by a segmented magnetic isolation bridge, and rectangular permanent magnet grooves are formed in two sides of each segmented magnetic isolation bridge; an upper process groove and a lower process groove are arranged at two ends of the rectangular permanent magnet groove; the iron core section between the upper section process groove and the outer circle of the rotor punching sheet body is a main magnetic isolation bridge, and the lower section process grooves on two sides of the permanent magnet segmented V-shaped magnetic circuit structure are isolated by an auxiliary magnetic isolation bridge.
Furthermore, the rotor punching body is circular, and its internal diameter D1 is 48mm, and external diameter D2 is 150 mm.
Furthermore, the included angle alpha degree of the two sides of the permanent magnet segmented V-shaped magnetic circuit structure is 113 degrees, and the included angle beta degree of the two sides of the adjacent permanent magnet segmented V-shaped magnetic circuit structure is 18 degrees.
Further, the thicknesses H1, H2 and H3 of the segmented magnetic isolation bridge, the main magnetic isolation bridge and the auxiliary magnetic isolation bridge are respectively 3.8mm, 1.1mm and 3.3 mm; the slot length L1 and the slot width W1 of the rectangular permanent magnet are 22.1mm and 5.3mm respectively.
A rotor using the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor sheet as claimed in claim 1 comprises a rotor core formed by laminating a plurality of rotor sheet bodies, and the rotor core forms the rotor after being sleeved with a shaft.
A motor utilizing the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet of claim 1, comprising a base, a wound stator, an end cover, a bearing and a rotor, wherein the base is used for mounting the wound stator, the rotor is arranged in the wound stator, and the end cover and the bearing are used for supporting the rotor; the rotor is a rotor core formed by laminating a plurality of rotor punching sheet bodies, and the rotor core forms a rotor after being sleeved with a shaft.
Furthermore, the base comprises a bottom supporting seat, a damping rubber layer, a spring shock absorption layer, a top supporting seat and a U-shaped reinforcing member, wherein the bottom supporting seat and the top supporting seat are provided with a plurality of corresponding threaded holes, two arms of the U-shaped reinforcing member are provided with through holes for bolts to pass through, and the bottom supporting seat, the damping rubber layer, the spring shock absorption layer and the top supporting seat are fixedly and integrally installed through the U-shaped reinforcing member.
The invention has the beneficial effects that: the invention adds the subsection magnetic isolation bridge, and the rectangular permanent magnet slot is divided into two sections by utilizing the subsection magnetic isolation bridge, thereby sharing and reducing the stress at the main magnetic isolation bridge and the auxiliary magnetic isolation bridge and increasing the mechanical strength of the rotor punching sheet; the invention omits a reinforcing rib structure on the existing rotor punching sheet, and is convenient for the industrial production of the motor; the sectional magnetic isolation bridge, the main magnetic isolation bridge and the auxiliary magnetic isolation bridge are reasonable in size, and the air gap magnetic field waveform is close to sine wave distribution.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged fragmentary view of section I of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the motor structure of the present invention;
FIG. 4 is a schematic view of the stand structure of the present invention;
FIG. 5 is a stress cloud diagram of the rotor punching sheet of the present invention and the existing rotor punching sheet at a high rotation speed of 12000 r/min;
fig. 6 is a waveform diagram of the air-gap field of the motor of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1 and fig. 2, the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching comprises a rotor punching body 1 and is characterized by further comprising a permanent magnet segmented V-shaped magnetic circuit structure 2 arranged on the rotor punching body 1; the rotor body 1 is provided with 4 groups of permanent magnet segmented V-shaped magnetic circuit structures 2 which are uniformly distributed along the circumference, one side of each permanent magnet segmented V-shaped magnetic circuit structure 2 is separated by a segmented magnetic isolation bridge 3, and rectangular permanent magnet grooves 4 are formed in two sides of each segmented magnetic isolation bridge 3; the upper and lower process grooves 5 and 7 are arranged at the two ends of the rectangular permanent magnet groove 4; the iron core section between the upper section process groove 5 and the outer circle of the rotor punching sheet body 1 is a main magnetic isolation bridge 6, and the lower section process grooves 7 on two sides of the permanent magnet segmented V-shaped magnetic circuit structure 2 are isolated by an auxiliary magnetic isolation bridge 8.
In this embodiment, the rotor punching body 1 is circular, and its internal diameter D1 is 48mm, and external diameter D2 is 150 mm.
In this embodiment, the included angle α between two sides of the permanent magnet segmented V-shaped magnetic structure 2 is 113 °, and the included angle β between two sides of the adjacent permanent magnet segmented V-shaped magnetic structure 2 is 18 °.
In the embodiment, the thicknesses H1, H2 and H3 of the segmented magnetic isolation bridge 3, the main magnetic isolation bridge 6 and the auxiliary magnetic isolation bridge 8 are respectively 3.8mm, 1.1mm and 3.3 mm; the rectangular permanent magnet slots 4 have a slot length L1 and a slot width W1 of 22.1mm and 5.3mm, respectively.
In the embodiment, the invention also discloses a rotor of the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor sheet, which utilizes the structure as claimed in claim 1, and comprises a rotor core formed by laminating a plurality of rotor sheet bodies 1, wherein the rotor core forms the rotor after being sleeved with a shaft.
Referring to fig. 3, the invention also discloses a motor using the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet of claim 1, comprising a base 9, a wound stator 10, an end cover 11, a bearing 12 and a rotor 13, wherein the base 9 is used for mounting the wound stator 10, the rotor 13 is arranged in the wound stator 10, and the end cover 11 and the bearing 12 are used for supporting the rotor 13; the rotor 13 is a rotor core formed by laminating a plurality of rotor punching sheet bodies 1, the rotor core forms a rotor after being sleeved with a shaft, and after the motor adopts the rotor punching sheet body 1, the mechanical strength of the rotor can be improved, and the running speed of the motor is greatly improved.
Referring to fig. 4, the base 9 includes a bottom seat 14, a damping rubber layer 15, a spring shock-absorbing layer 16, a top seat 17, and a U-shaped stiffener 18, the bottom seat 14 and the top seat 17 are provided with a plurality of corresponding threaded holes 19, two arms of the U-shaped stiffener 18 are provided with through holes 20 for bolts to pass through, and the bottom seat 14, the damping rubber layer 15, the spring shock-absorbing layer 16, and the top seat 17 are fixedly mounted as a whole through the U-shaped stiffener 18. The base adopted by the invention has good buffering and damping performance, and the working efficiency of the motor is ensured.
In conclusion, the segmented magnetic isolation bridge is additionally arranged, the rectangular permanent magnet slot is divided into two sections by utilizing the segmented magnetic isolation bridge, the stress at the main magnetic isolation bridge and the auxiliary magnetic isolation bridge is shared and reduced, and the mechanical strength of the rotor punching sheet is increased; the invention omits a reinforcing rib structure on the existing rotor punching sheet, and is convenient for the industrial production of the motor; the sectional magnetic isolation bridge, the main magnetic isolation bridge and the auxiliary magnetic isolation bridge are reasonable in size, and the air gap magnetic field waveform is close to sine wave distribution.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet comprises a rotor punching sheet body (1) and is characterized by further comprising a permanent magnet segmented V-shaped magnetic circuit structure (2) arranged on the rotor punching sheet body (1); the rotor body (1) is provided with 4 groups of permanent magnet segmented V-shaped magnetic circuit structures (2) which are uniformly distributed along the circumference, one side of each permanent magnet segmented V-shaped magnetic circuit structure (2) is separated by a segmented magnetic isolation bridge (3), and rectangular permanent magnet grooves (4) are formed in two sides of each segmented magnetic isolation bridge (3); upper and lower process grooves (5, 7) are arranged at two ends of the rectangular permanent magnet groove (4); the iron core section between the upper section process groove (5) and the outer circle of the rotor punching sheet body (1) is a main magnetic isolation bridge (6), and the lower section process grooves (7) on the two sides of the permanent magnet segmented V-shaped magnetic circuit structure (2) are separated by an auxiliary magnetic isolation bridge (8).
2. The rotor punching sheet of the built-in V-shaped segmented high-speed permanent magnet synchronous motor according to claim 1, wherein the rotor punching sheet body (1) is circular, the inner diameter D1 of the rotor punching sheet body is 48mm, and the outer diameter D2 of the rotor punching sheet body is 150 mm.
3. The rotor punching sheet of the built-in V-shaped segmented high-speed permanent magnet synchronous motor according to claim 1, wherein the included angle alpha degrees of the two sides of the permanent magnet segmented V-shaped magnetic circuit structure (2) are 113 degrees, and the included angle beta degrees of the two sides of the adjacent permanent magnet segmented V-shaped magnetic circuit structure (2) are 18 degrees.
4. The rotor punching sheet of the built-in V-shaped segmented high-speed permanent magnet synchronous motor according to claim 1, wherein the thicknesses H1, H2 and H3 of the segmented magnetic isolation bridge (3), the main magnetic isolation bridge (6) and the auxiliary magnetic isolation bridge (8) are respectively 3.8mm, 1.1mm and 3.3 mm; the rectangular permanent magnet slot (4) has a slot length L1 and a slot width W1 of 22.1mm and 5.3mm respectively.
5. A rotor using the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor sheet as claimed in claim 1 is characterized by comprising a rotor core formed by laminating a plurality of rotor sheet bodies (1), wherein the rotor core forms the rotor after being sleeved with a shaft.
6. A motor utilizing the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet of claim 1 is characterized in that: the motor comprises a base (9), a winding stator (10), an end cover (11), a bearing (12) and a rotor (13), wherein the base (9) is used for mounting the winding stator (10), the rotor (13) is arranged in the winding stator (10), and the end cover (11) and the bearing (12) are used for supporting the rotor (13); the rotor (13) is a rotor core formed by laminating a plurality of rotor punching sheet bodies (1), and the rotor core forms a rotor after being sleeved with a shaft.
7. The motor utilizing the built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor sheet as claimed in claim 1 as claimed in claim 6, is characterized in that: the base (9) comprises a bottom supporting seat (14), a damping rubber layer (15), a spring shock absorption layer (16), a top supporting seat (17) and a U-shaped reinforcing member (18), wherein the bottom supporting seat (14) and the top supporting seat (17) are provided with a plurality of corresponding threaded holes (19), two arms of the U-shaped reinforcing member (18) are provided with through holes (20) for bolts to pass through, and the bottom supporting seat (14), the damping rubber layer (15), the spring shock absorption layer (16) and the top supporting seat (17) are fixedly installed into a whole through the U-shaped reinforcing member (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846244.7A CN111969743A (en) | 2020-08-21 | 2020-08-21 | Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010846244.7A CN111969743A (en) | 2020-08-21 | 2020-08-21 | Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor |
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| Publication Number | Publication Date |
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| CN111969743A true CN111969743A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010846244.7A Pending CN111969743A (en) | 2020-08-21 | 2020-08-21 | Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor |
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| CN (1) | CN111969743A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455951A (en) * | 2014-12-12 | 2015-03-25 | 江阴市盛园铜材有限公司 | Shockproof base |
| CN108448767A (en) * | 2018-05-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of permasyn morot with new type rotor structure |
| CN109831082A (en) * | 2019-03-05 | 2019-05-31 | 南京航空航天大学 | Interior permanent magnet mixed excitation electric machine based on brushless ac excitation |
| CN110768426A (en) * | 2019-11-07 | 2020-02-07 | 南通大学 | High-speed high-torque permanent magnet synchronous motor rotor punching sheet and motor |
-
2020
- 2020-08-21 CN CN202010846244.7A patent/CN111969743A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455951A (en) * | 2014-12-12 | 2015-03-25 | 江阴市盛园铜材有限公司 | Shockproof base |
| CN108448767A (en) * | 2018-05-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of permasyn morot with new type rotor structure |
| CN109831082A (en) * | 2019-03-05 | 2019-05-31 | 南京航空航天大学 | Interior permanent magnet mixed excitation electric machine based on brushless ac excitation |
| CN110768426A (en) * | 2019-11-07 | 2020-02-07 | 南通大学 | High-speed high-torque permanent magnet synchronous motor rotor punching sheet and motor |
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