CN219643680U - Rotor punching sheet of permanent magnet synchronous reluctance motor - Google Patents
Rotor punching sheet of permanent magnet synchronous reluctance motor Download PDFInfo
- Publication number
- CN219643680U CN219643680U CN202321095543.7U CN202321095543U CN219643680U CN 219643680 U CN219643680 U CN 219643680U CN 202321095543 U CN202321095543 U CN 202321095543U CN 219643680 U CN219643680 U CN 219643680U
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- magnetic
- magnetic groove
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- permanent magnet
- reluctance motor
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- 238000004080 punching Methods 0.000 title claims abstract description 67
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 28
- 230000005291 magnetic effect Effects 0.000 claims abstract description 167
- 230000005389 magnetism Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 8
- 230000005347 demagnetization Effects 0.000 abstract description 4
- 230000007847 structural defect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Synchronous Machinery (AREA)
Abstract
The utility model provides a permanent magnet synchronous reluctance motor rotor punching, including the punching body, be equipped with a plurality of circumference distribution's magnetic groove group on the punching body, every magnetic groove group includes a plurality of radial distribution's magnetic groove, a plurality of magnetic grooves of same magnetic groove group are the symmetry setting along the radial direction of punching body, and the size of a plurality of magnetic grooves of same magnetic groove group reduces in proper order from inside to outside, the magnetic groove includes first magnetic groove, second magnetic groove and third magnetic groove symmetry set up the left and right sides in first magnetic groove, be equipped with the magnetism bridge that separates between second magnetic groove and third magnetic groove and the first magnetic groove respectively, it has solved current permanent magnet synchronous reluctance motor rotor punching and has because of its structural defect, thereby lead to the permanent magnet low in utilization ratio and the technical problem of easy appearance demagnetization phenomenon, but wide application in rotor punching technical field.
Description
Technical Field
The utility model relates to the technical field of rotor punching sheets, in particular to a rotor punching sheet of a permanent magnet synchronous reluctance motor.
Background
The motor mainly comprises a stator, a rotor and other accessories, wherein the rotor comprises a rotor core and a rotor winding, and the rotor core is formed by laminating rotor punching sheets. The structure of the rotor punching sheet is designed specifically according to the performance of the motor, and the motors with different performance requirements are matched with the rotor punching sheets with different structures.
The principle of the permanent magnet synchronous reluctance motor is that a rotating magnetic field is formed by utilizing the interaction of a magnetic field generated by a permanent magnet and a magnetic field generated by a stator winding, so that a rotor rotates along with the rotating magnetic field, and meanwhile, the speed of the rotor rotating along with the rotating magnetic field and the speed of the rotating magnetic field are kept synchronous by utilizing the synchronous reluctance principle and by adjusting the reluctance of the rotor, so that high-efficiency and high-precision rotation is realized. However, the permanent magnet is easy to generate magnetic leakage phenomenon, so that the utilization rate of the permanent magnet is low, and in addition, once the permanent magnet generates demagnetization phenomenon, the normal use of the motor can be influenced, so that the structure of a rotor punching sheet of the permanent magnet synchronous reluctance motor needs to be designed to improve the magnetic leakage phenomenon, improve the utilization rate of the permanent magnet and improve the demagnetization resistance of the permanent magnet.
Based on the above situation, the utility model designs a rotor punching sheet of a permanent magnet synchronous reluctance motor.
Disclosure of Invention
The utility model aims to provide a rotor punching sheet of a permanent magnet synchronous reluctance motor, which aims to solve the technical problems that the utilization rate of a permanent magnet is low and demagnetization phenomenon is easy to occur due to the defect of the structure of the existing rotor punching sheet of the permanent magnet synchronous reluctance motor.
The embodiment of the utility model provides a rotor punching sheet of a permanent magnet synchronous reluctance motor, which comprises a punching sheet body, wherein a plurality of circumferentially distributed magnetic groove groups are arranged on the punching sheet body, each magnetic groove group comprises a plurality of radially distributed magnetic grooves, a plurality of magnetic grooves of the same magnetic groove group are symmetrically arranged along the radial direction of the punching sheet body, the sizes of the plurality of magnetic grooves of the same magnetic groove group are sequentially reduced from inside to outside, each magnetic groove comprises a first magnetic groove, a second magnetic groove and a third magnetic groove, the second magnetic groove and the third magnetic groove are symmetrically arranged on the left side and the right side of the first magnetic groove, and a magnetic isolation bridge is respectively arranged between the second magnetic groove and the third magnetic groove and the first magnetic groove.
In one embodiment, the first magnetic slot, the second magnetic slot, and the third magnetic slot are each configured in a trapezoid.
In one embodiment, the included angles formed between the second magnetic groove and the third magnetic groove and the first magnetic groove are obtuse angles.
In one embodiment, the sides of the second magnetic slot and the third magnetic slot, which are close to the first magnetic slot, are respectively arranged in parallel with the two sides of the first magnetic slot.
In one embodiment, two sides of the bottom ends of the first magnetic groove, the second magnetic groove and the third magnetic groove are respectively provided with a positioning step.
In one embodiment, the punching body is further provided with a plurality of circumferentially distributed fixing holes, and the fixing holes are located at the inner side of the magnetic groove group.
In one embodiment, a shaft hole is formed in the center of the punching body, the shaft hole is located at the inner side of the fixing hole, and a key groove is formed in the shaft hole.
In one embodiment, the shaft hole is further provided with balance grooves, and the balance grooves and the key grooves are symmetrically distributed on the circumference of the shaft hole.
The utility model provides a rotor punching sheet of a permanent magnet synchronous reluctance motor, which has the beneficial effects that: the number of the permanent magnets is increased in the magnetization direction by arranging a plurality of magnetic grooves which are distributed radially to form a magnetic groove group, so that the anti-demagnetization capability of the permanent magnets is improved; the magnetic grooves are arranged to be the first magnetic groove, the second magnetic groove and the third magnetic groove, and the magnetic isolation bridges are respectively arranged between the second magnetic groove and the first magnetic groove, so that the magnetic grooves are subjected to groove separation treatment, the occurrence of magnetic leakage is reduced, the utilization rate of the permanent magnet is improved, in addition, the design of the magnetic isolation bridges can also ensure the mechanical strength of the rotor punching sheet, and the rotor punching sheet is prevented from cracking in high-speed operation of the motor; the utility model has simple structure, convenient manufacture and high utilization rate of the permanent magnet, the anti-demagnetizing capability is strong, and the balance of the rotor punching sheet is high.
Drawings
FIG. 1 is a schematic diagram of a rotor sheet of a permanent magnet synchronous reluctance motor according to an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of the rotor sheet of the permanent magnet synchronous reluctance motor shown in FIG. 1 at A;
fig. 3 is a schematic diagram of a stacked structure of rotor laminations of the permanent magnet synchronous reluctance motor shown in fig. 1.
The symbols in the drawings illustrate:
1. a punching body; 2. a magnetic groove; 201. a first magnetic slot; 202. a second magnetic slot; 203. a third magnetic slot; 3. a magnetic isolation bridge; 4. positioning the step; 5. a shaft hole; 6. a key slot; 7. a balancing groove; 8. and a fixing hole.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It should be noted that, the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "left", "right", "top", "bottom", "high", "low", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not to be construed as indicating or implying that the apparatus or element in question must be provided with a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Referring to fig. 1, a schematic structural diagram of a rotor sheet of a permanent magnet synchronous reluctance motor according to an embodiment of the present utility model is shown, for convenience of explanation, only the portions related to the embodiment are shown, and the details are as follows:
in one embodiment, please combine fig. 2, a permanent magnet synchronous reluctance motor rotor punching sheet, including a punching sheet body 1, a plurality of circumferentially distributed magnetic groove groups are arranged on the punching sheet body 1, each magnetic groove group includes a plurality of radially distributed magnetic grooves 2, a plurality of magnetic grooves 2 of the same magnetic groove group are symmetrically arranged along the radial direction of the punching sheet body 1, and the sizes of a plurality of magnetic grooves 2 of the same magnetic groove group are sequentially reduced from inside to outside, permanent magnets are placed in the magnetic grooves 2, the number of the permanent magnets is increased in the magnetization direction by arranging a plurality of magnetic grooves 2 to radially distribute to form the magnetic groove groups, and the anti-demagnetization capability of the permanent magnets is improved; the magnetic groove 2 comprises a first magnetic groove 201, a second magnetic groove 202 and a third magnetic groove 203, the second magnetic groove 202 and the third magnetic groove 203 are symmetrically arranged on the left side and the right side of the first magnetic groove 201, a magnetic isolation bridge 3 is respectively arranged between the second magnetic groove 202 and the third magnetic groove 203 and the first magnetic groove 201, permanent magnets are respectively arranged in the first magnetic groove 201, the second magnetic groove 202 and the third magnetic groove 203, and through the arrangement of the magnetic isolation bridge 3, the groove separation treatment is carried out on each magnetic groove 2, so that the magnetic leakage phenomenon is reduced, the utilization rate of the permanent magnets is improved, and in addition, the design of the magnetic isolation bridge 3 can also ensure the mechanical strength of a rotor punching sheet and prevent the rotor punching sheet from cracking in the high-speed operation of a motor.
Specifically, referring to fig. 1 and 2, the punching body 1 is configured as a circular sheet, the magnetic grooves 2 are configured as hollow structures, the first magnetic groove 201, the second magnetic groove 202 and the third magnetic groove 203 are configured as trapezoids, the heights of the first magnetic groove 201, the second magnetic groove 202 and the third magnetic groove 203 are equal, the first magnetic groove 201, the second magnetic groove 202 and the third magnetic groove 203 form a U-shaped groove with outward openings, and the arrangement increases the salient pole ratio of the rotor punching, thereby increasing the reluctance torque, realizing the high torque output of the motor and improving the running efficiency of the motor; the included angle that forms between second magnetic groove 202 and third magnetic groove 203 and the first magnetic groove 201 is the obtuse angle, and the side that is close to first magnetic groove 201 on second magnetic groove 202 and the third magnetic groove 203 is parallel arrangement with two sides of first magnetic groove 201 respectively, and in this embodiment, magnetic groove group sets up to 6, and 6 magnetic groove group is about punching sheet body 1 circumference evenly distributed, and magnetic groove group's shape and overall arrangement make the permanent magnet demonstrate good magnetic effect that gathers, have improved the utilization ratio of permanent magnet.
Referring to fig. 1 and 3, the punching body 1 is further provided with a plurality of circumferentially distributed fixing holes 8, the fixing holes 8 are located at the inner sides of the magnetic slot groups, riveting members are arranged in the fixing holes 8, the riveting members are used for superposing and pressing the plurality of punching bodies 1 into a rotor core, in this embodiment, the number of the fixing holes 8 is 6, the center of each fixing hole 8 is arranged on the symmetry line of two adjacent magnetic slot groups, the 6 fixing holes 8 are circumferentially uniformly distributed, the circumferentially uniform distribution of the fixing holes 8 improves the mechanical strength of the punching body 1, and meanwhile, the punching body 1 can be prevented from generating cracks in high-speed operation.
Referring to fig. 1, a shaft hole 5 is provided at the center of a punching body 1, the shaft hole 5 is located at the inner side of a fixing hole 8, a key slot 6 is provided on the shaft hole 5, a rotating shaft of a motor is inserted into the shaft hole 5 and the key slot 6, the rotating shaft is connected with a rotor core formed by the punching body 1 through the key slot 6, the key slot 6 plays a role in positioning the rotor core, and relative rotation between the rotating shaft and the rotor core in the operation process of the motor is prevented.
In one embodiment, referring to fig. 2, two sides of the bottom ends of the first magnetic slot 201, the second magnetic slot 202 and the third magnetic slot 203 are respectively provided with a positioning step 4, and the positioning steps 4 play a role in fixing the permanent magnets.
In one embodiment, referring to fig. 1, the shaft hole 5 is further provided with balancing grooves 7, the balancing grooves 7 and the key grooves 6 are symmetrically distributed on the circumference of the shaft hole 5, and the balancing grooves 7 are used for balancing the weight of the rotor punching sheet.
The working principle of the rotor punching sheet of the permanent magnet synchronous reluctance motor is described below with reference to fig. 1 to 3:
stacking a plurality of punching bodies 1 together to enable the shaft hole 5, the key groove 6 and the balance groove 7 of each punching body 1 to be aligned with each other, at the moment, a plurality of fixing holes 8 on each punching body 1 are also aligned with each other one by one, then inserting riveting pieces into the fixing holes 8, pressing the riveting pieces, laminating the plurality of punching bodies 1 into a rotor core through the riveting pieces, then placing permanent magnets of corresponding shapes in the magnetic groove 2, positioning the permanent magnets through the positioning step 4, inserting a rotating shaft into the shaft hole 5 and the key groove 6, and connecting the rotating shaft with the rotor core.
The utility model provides a rotor punching sheet of a permanent magnet synchronous reluctance motor, which is characterized in that a plurality of magnetic grooves 2 are arranged to be distributed radially to form a magnetic groove group, the number of permanent magnets is increased in the magnetization direction, and the anti-demagnetization capability of the permanent magnets is improved; by arranging the magnetic grooves 2 into the first magnetic groove 201, the second magnetic groove 202 and the third magnetic groove 203, and arranging the magnetism isolating bridges 3 between the second magnetic groove 202 and between the third magnetic groove 203 and the first magnetic groove 201, the magnetic grooves 2 are subjected to groove separation treatment, so that the occurrence of magnetic leakage is reduced, the utilization rate of a permanent magnet is improved, in addition, the design of the magnetism isolating bridges 3 can ensure the mechanical strength of a rotor punching sheet, and the rotor punching sheet is prevented from cracking in the high-speed running of a motor; the permanent magnet rotor punching device is simple in structure, convenient to manufacture, high in permanent magnet utilization rate, high in anti-demagnetizing capability and high in rotor punching balance, and can be widely applied to the technical field of rotor punching.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present utility model.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (8)
1. The utility model provides a synchronous reluctance motor rotor punching of permanent magnetism, includes the punching body, be equipped with a plurality of circumference distribution's magnetic groove group on the punching body, its characterized in that, every the magnetic groove group includes a plurality of radial distribution's magnetic groove, the same a plurality of magnetic groove group the magnetic groove is the symmetry setting along the radial direction of punching body, and the same a plurality of magnetic groove group the size of magnetic groove reduces in proper order from inside to outside, the magnetic groove includes first magnetic groove, second magnetic groove and third magnetic groove, the second magnetic groove with third magnetic groove symmetry sets up the left and right sides of first magnetic groove, second magnetic groove and third magnetic groove with be equipped with the magnetism isolation bridge respectively between the first magnetic groove.
2. The rotor of claim 1, wherein the first, second and third magnetic slots are each configured as a trapezoid.
3. The rotor punching of a permanent magnet synchronous reluctance motor according to claim 2, wherein the included angles formed between the second magnetic groove and the third magnetic groove and the first magnetic groove are obtuse angles.
4. The rotor punching sheet of a permanent magnet synchronous reluctance motor according to claim 1, wherein the sides of the second magnetic slot and the third magnetic slot, which are close to the first magnetic slot, are respectively arranged in parallel with the two sides of the first magnetic slot.
5. The rotor punching sheet of a permanent magnet synchronous reluctance motor according to claim 1, wherein positioning steps are arranged on two sides of the bottom ends of the first magnetic groove, the second magnetic groove and the third magnetic groove.
6. The rotor punching sheet of the permanent magnet synchronous reluctance motor according to claim 1, wherein a plurality of circumferentially distributed fixing holes are further formed in the punching sheet body, and the fixing holes are located on the inner side of the magnetic groove group.
7. The rotor punching sheet of the permanent magnet synchronous reluctance motor according to claim 6, wherein a shaft hole is formed in the center of the punching sheet body, the shaft hole is located on the inner side of the fixing hole, and a key groove is formed in the shaft hole.
8. The rotor punching sheet of the permanent magnet synchronous reluctance motor according to claim 7, wherein the shaft hole is further provided with balancing grooves, and the balancing grooves and the key grooves are symmetrically distributed on the circumference of the shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321095543.7U CN219643680U (en) | 2023-05-09 | 2023-05-09 | Rotor punching sheet of permanent magnet synchronous reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321095543.7U CN219643680U (en) | 2023-05-09 | 2023-05-09 | Rotor punching sheet of permanent magnet synchronous reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643680U true CN219643680U (en) | 2023-09-05 |
Family
ID=87813042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321095543.7U Active CN219643680U (en) | 2023-05-09 | 2023-05-09 | Rotor punching sheet of permanent magnet synchronous reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643680U (en) |
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2023
- 2023-05-09 CN CN202321095543.7U patent/CN219643680U/en active Active
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