CN220857879U - Permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets - Google Patents
Permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets Download PDFInfo
- Publication number
- CN220857879U CN220857879U CN202322457853.5U CN202322457853U CN220857879U CN 220857879 U CN220857879 U CN 220857879U CN 202322457853 U CN202322457853 U CN 202322457853U CN 220857879 U CN220857879 U CN 220857879U
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- 238000004080 punching Methods 0.000 title claims abstract description 56
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 5
- 230000010349 pulsation Effects 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003313 weakening effect Effects 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
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets, which comprises a stator core formed by a plurality of stator punching sheets and a rotor core formed by a plurality of rotor punching sheets, wherein the stator punching sheets are provided with rotor holes and 72 stator grooves, the rotor punching sheets are positioned in the rotor holes, the rotor punching sheets are provided with shaft holes and 12 pairs of rotor grooves, each pair of rotor grooves comprises two strip-shaped grooves, the two strip-shaped grooves are V-shaped, the V-shaped openings face the direction far away from the rotor holes, a partition is arranged between the two strip-shaped grooves, the shaft holes are provided with positioning sheet grooves, and the rotor punching sheets are permanent magnet magnetic steel punching sheets, so that the power density of the motor is improved, and the efficiency is higher; the length of the motor is shorter and more compact, and the weak magnetic speed regulation range is wider; the 72/12 slot pole is more prone to sine wave than the waveform of the motor at low speed, and the motor operates more stably at low speed, so that the pulsation phenomenon is extremely small.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets.
Background
Along with the increasingly wide application of the permanent magnet synchronous motor in the industrial control field, the requirements on energy conservation and emission reduction of the motor are more and more prominent, the requirements on the size of the motor are less and less, the requirements on running stability and efficiency of the motor are more and more high, the current rotor of the embedded structure of the foreign and domestic permanent magnet synchronous motor is linear, the slot pole ratio is generally 48/8 (stator slot/rotor slot), and the following problems exist: the motor has low power density, long motor size, low weak magnetic speed regulation range, low efficiency, great sawtooth wave in the waveform of the motor during low speed operation, unstable low speed operation and obvious pulsation of the motor rotor.
The riveted rotor core disclosed in publication number CN209419340U has a V-shaped groove formed in the rotor sheet, so as to increase the resistivity of the rotor core and reduce eddy current loss.
However, the number of slots on the rotor punching sheet disclosed in the above patent is 8, which means that the slot pole ratio of the motor is 48/8, so that the motor still has the problems of low power density, long motor size, low flux weakening speed regulation range, low efficiency, large sawtooth wave of motor waveform during low-speed operation, unstable low-speed operation, obvious pulsation phenomenon of the motor rotor and the like, and further improvement space is provided.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides the permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets, which improves the power density, ensures that the motor is more stable during low-speed rotation, has smaller motor size and has more compact internal structure.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a possess permanent magnet synchronous motor of 12 pairs of V type groove rotor punching, includes the stator core that a plurality of stator punching is constituteed and the rotor core that a plurality of rotor punching is constituteed, be provided with rotor hole and 72 stator grooves on the stator punching, the rotor punching is located the rotor downthehole, be provided with shaft hole and 12 pairs of rotor grooves on the rotor punching, every pair of rotor groove includes two bar grooves, and two bar grooves form the rotor groove that is the V type, and the opening orientation of V type rotor groove is kept away from the direction in rotor hole, be provided with the wall between two bar grooves, be provided with convex spacer on the shaft hole, the rotor punching is permanent magnet magnetism steel punching.
Further, the excircle of the rotor punching sheet is in a continuous corrugated shape, each section of corrugated corresponds to a pair of rotor grooves, and smooth transition connection or direct connection between each section of corrugated forms a connection trace.
Further, a process hole is arranged between the two V-shaped strip-shaped grooves.
Further, a lightening hole is arranged between each pair of rotor grooves and the shaft hole.
Further, the ends of the two V-shaped strip-shaped grooves, which are far away from each other, are provided with a chamfer part and a protruding part, the chamfer part is positioned at one side close to the corrugated section, and the protruding part is positioned at one side far away from the corrugated section.
Further, a fractional slot double-layer laminated winding is adopted on a stator core formed by the stator punching sheets.
Compared with the prior art, the utility model has the beneficial effects that: the stator core of the motor is formed by a plurality of stator punching sheets, the rotor core of the motor is formed by a plurality of rotor punching sheets, and finally a permanent magnet synchronous motor is formed, so that the power density of the motor is effectively improved and the efficiency is higher when the motor runs; meanwhile, the length of the motor is shorter and more compact, and the weak magnetic speed regulation range is wider; the cogging torque of the motor is effectively reduced by adopting the uneven air gap with the 72/12 slot pole ratio and the outer diameter of the rotor punching sheet, so that the waveform of the motor tends to be sine wave more at low speed, the motor runs more stably at low speed, the motor can still run stably at the lowest rotation speed of 2rpm, and the pulsation phenomenon is very small; the weight of the rotor punching sheet is smaller through the weight reducing holes, so that the rotational inertia of the rotor core is effectively reduced, and the reaction speed of the motor is more sensitive.
Drawings
Fig. 1 is a schematic diagram of the matching of a stator core and a rotor core in a permanent magnet synchronous motor with 12 pairs of V-groove rotor punching sheets;
FIG. 2 is a schematic diagram of a rotor sheet in a permanent magnet synchronous motor with 12 pairs of V-groove rotor sheets according to the present utility model;
Fig. 3 is an enlarged view of a portion a in fig. 2.
Reference numerals: stator punching 1; rotor punching sheet 2; a stator groove 3; a shaft hole 4; a rotor groove 5; a bar-shaped groove 6; a positioning sheet 7; a process hole 8; a lightening hole 9; a chamfering section 10; a protrusion 11; a corrugation 12.
Detailed Description
In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.
The utility model is further described with reference to fig. 1 to 3.
The utility model provides a permanent magnet synchronous motor who possesses 12 pairs of V type groove rotor punching, includes the stator core that a plurality of stator punching 1 are constituteed and the rotor core that a plurality of rotor punching 2 are constituteed, be provided with rotor hole and 72 stator grooves 3 on the stator punching 1, rotor punching 2 is located the rotor downthehole, be provided with shaft hole 4 and 12 pairs of rotor groove 5 on the rotor punching 2, every pair of rotor groove 5 includes two bar grooves 6, and two bar grooves 6 form the rotor groove 5 that is the V type, and the opening orientation of V type rotor groove 5 is kept away from the direction of rotor hole, be provided with the wall between two bar grooves 6, be provided with convex spacer 7 on the shaft hole 4, rotor punching 2 is permanent magnet magnetic steel punching.
As shown in fig. 2 and 3, in this embodiment, preferably, the outer circle of the rotor punching sheet 2 is in a continuous corrugated shape 12, and each section of corrugated shape 12 corresponds to a pair of rotor slots 5, and smooth transition connection (not directly shown in the drawing) or direct connection between each section of corrugated shape 12 forms a connection trace (shown in fig. 3), and an uneven air gap is formed between the outer circle of corrugated shape 12 and the stator core.
As shown in fig. 2, in this embodiment, preferably, a process hole 8 is disposed between the two V-shaped bar grooves 6.
As shown in fig. 2, in the present embodiment, preferably, a weight reducing hole 9 is provided between each pair of the rotor grooves 5 and the shaft hole 4.
As shown in fig. 3, in this embodiment, it is preferable that the ends of the two V-shaped strip-shaped grooves 6 which are far from each other are provided with a chamfer 10 and a protrusion 11, the chamfer 10 being located on the side near the corrugated 12 section, and the protrusion 11 being located on the side far from the corrugated 12 section.
In this embodiment, preferably, the stator core formed by the stator punching sheets 1 adopts a fractional slot double-layer stacked winding, so that the interior of the motor is more compact.
In this embodiment, preferably, the outer diameter of the stator punching sheet 1 is 368mm, the maximum outer diameter of the rotor punching sheet 2 is 263mm, and the diameter of the shaft hole 4 is 110mm.
As shown in fig. 1 to 3, a stator core of the motor is formed by a plurality of stator punching sheets 1, a rotor core of the motor is formed by a plurality of rotor punching sheets 2, and finally a permanent magnet synchronous motor is formed, so that the power density of the motor is effectively improved and the efficiency is higher when the motor runs; meanwhile, the length of the motor is shorter and more compact, and the weak magnetic speed regulation range is wider; the cogging torque of the motor is effectively reduced by adopting the uneven air gap at the 72/12 slot pole ratio and the outer diameter of the rotor punching sheet 2, so that the waveform of the motor tends to be sine wave more when the motor is at a low speed, the lowest running speed runs stably at 2rpm, and the pulsation phenomenon is extremely small; the weight of the rotor punching sheet 2 is smaller through the weight reducing holes 9, so that the moment of inertia of the rotor core is effectively reduced, and the reaction speed of the motor is more sensitive.
The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (6)
1. A permanent magnet synchronous motor with 12 pairs of V-groove rotor punching sheets, which is characterized in that: including the stator core that a plurality of stator punching sheet are constituteed and the rotor core that a plurality of rotor punching sheet are constituteed, be provided with rotor hole and 72 stator slots on the stator punching sheet, the rotor punching sheet is located the rotor downthehole, be provided with shaft hole and 12 pairs of rotor slots on the rotor punching sheet, every pair of rotor slot includes two bar grooves, and two bar grooves form the rotor slot that is the V type, and the opening orientation in V type rotor slot keeps away from the direction in rotor hole, be provided with the wall between two bar grooves, be provided with convex spacer on the shaft hole, the rotor punching sheet is permanent magnet magnetic steel punching sheet.
2. A permanent magnet synchronous motor having 12 pairs of V-groove rotor laminations according to claim 1, characterized in that: the excircle of the rotor punching sheet is in a continuous corrugated shape, each section of corrugated corresponds to a pair of rotor grooves, and smooth transition connection or direct connection between each section of corrugated forms a connection trace.
3. A permanent magnet synchronous motor having 12 pairs of V-groove rotor laminations according to claim 2, characterized in that: and a process hole is arranged between the two V-shaped strip-shaped grooves.
4. A permanent magnet synchronous motor having 12 pairs of V-groove rotor laminations according to claim 3, characterized in that: and a lightening hole is arranged between each pair of rotor grooves and the shaft hole.
5. The permanent magnet synchronous motor with 12 pairs of V-groove rotor laminations according to claim 4, characterized in that: the end parts, far away from each other, of the two V-shaped strip-shaped grooves are provided with a chamfer part and a protruding part, the chamfer part is positioned on one side close to the corrugated section, and the protruding part is positioned on one side far away from the corrugated section.
6. The permanent magnet synchronous motor with 12 pairs of V-groove rotor laminations according to claim 5, characterized in that: the stator core formed by the stator punching sheets adopts a fractional slot double-layer stacked winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457853.5U CN220857879U (en) | 2023-09-08 | 2023-09-08 | Permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457853.5U CN220857879U (en) | 2023-09-08 | 2023-09-08 | Permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220857879U true CN220857879U (en) | 2024-04-26 |
Family
ID=90746244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322457853.5U Active CN220857879U (en) | 2023-09-08 | 2023-09-08 | Permanent magnet synchronous motor with 12 pairs of V-shaped groove rotor punching sheets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220857879U (en) |
-
2023
- 2023-09-08 CN CN202322457853.5U patent/CN220857879U/en active Active
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