CN220492719U - Coreless permanent magnet synchronous motor rotor - Google Patents
Coreless permanent magnet synchronous motor rotor Download PDFInfo
- Publication number
- CN220492719U CN220492719U CN202321879634.XU CN202321879634U CN220492719U CN 220492719 U CN220492719 U CN 220492719U CN 202321879634 U CN202321879634 U CN 202321879634U CN 220492719 U CN220492719 U CN 220492719U
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- CN
- China
- Prior art keywords
- magnetic steel
- permanent magnet
- steel layer
- rotor
- mounting frame
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 75
- 239000010959 steel Substances 0.000 claims abstract description 75
- 239000000696 magnetic material Substances 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a coreless permanent magnet synchronous motor rotor which comprises a rotor holder, a permanent magnet mounting frame, a first magnetic steel layer and a second magnetic steel layer, wherein the circular permanent magnet mounting frame is sleeved on the outer side of the rotor holder, magnetic steel is mounted on the permanent magnet mounting frame in a surface-mounted mounting mode, the first magnetic steel layer and the second magnetic steel layer are mounted in a tile-shaped magnetic steel staggered mode, and the rotor holder and the permanent magnet mounting frame are made of non-magnetic materials. According to the utility model, by removing the rotor core, the eddy current effect generated on the rotor core by the magnetic steel field can be avoided, the rotor core loss is generated, the problem of high core loss of the existing permanent magnet synchronous motor is solved, the motor efficiency is improved, and the motor temperature rise is reduced.
Description
Technical Field
The utility model belongs to the technical field of permanent magnet synchronous motors, and particularly relates to a coreless permanent magnet synchronous motor rotor.
Background
Owing to the development of permanent magnet materials, the permanent magnet synchronous motor is widely applied in various fields with the advantages of light weight, high efficiency, small volume and the like, and at present, the permanent magnet synchronous motor becomes a main power source of new energy vehicles and other special vehicles, but because the working condition is complex and the use environment is bad, the higher requirements are put forward on the performance of the motor, the efficiency and the temperature rise are taken as main performance indexes, the attention in the industry is paid, and the reduction of the motor loss is a main way for improving the efficiency and reducing the temperature rise of the motor. The loss of the permanent magnet synchronous motor is mainly divided into stator winding loss, core loss, mechanical loss and load stray loss, and the core loss accounts for a larger proportion of the total loss under the condition of no load or load of the motor.
Disclosure of Invention
In order to solve the technical problem that the loss of the existing permanent magnet synchronous motor is large due to the iron core, the utility model provides the coreless permanent magnet synchronous motor rotor, which can greatly reduce the loss of the motor.
The utility model solves the technical problems that: the utility model provides a no iron core PMSM rotor, includes rotor holder, permanent magnet mounting bracket, first magnet steel layer, second magnet steel layer, circular permanent magnet mounting bracket suit rotor holder outside, installs the magnet steel on the permanent magnet mounting bracket with the mounting means of surface mounting formula, and first magnet steel layer, second magnet steel layer all adopt tile shape magnet steel staggered mount.
Further, the rotor holder and the permanent magnet mounting frame are made of non-magnetic materials.
Further, the tile-shaped magnetic steel in the first magnetic steel layer and the tile-shaped magnetic steel in the second magnetic steel layer are consistent in circumferential angle, the two layers of magnetic steel are installed in a staggered mode, and the magnetic steel in the second magnetic steel layer is staggered by 1/2 of the circumferential angle of the single magnetic steel relative to the magnetic steel in the first magnetic steel layer during installation.
Further, the first magnetic steel layer has two magnetizing modes, the first mode is tangent to the inner and outer circular arc edges of the tile-shaped magnetic steel, magnetizing clockwise, namely magnetizing anticlockwise, wherein the second is tangential with the inner arc edge and the outer arc edge of the tile-shaped magnetic steel; the magnetizing modes of the magnetic steel of the second magnetic steel layer are two, wherein the first is radial magnetizing from the circle center to the circumferential direction, and the second is radial magnetizing from the circumferential direction to the circle center direction.
The utility model has the beneficial effects that; compared with the prior art, the utility model can avoid the eddy current effect and the rotor core loss generated on the rotor core by removing the rotor core, solves the problem of high core loss of the existing permanent magnet synchronous motor, improves the motor efficiency and reduces the motor temperature rise.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic diagram of a magnetic force line path of a double-layer magnetic steel in the present utility model.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, the utility model comprises a rotor holder 1, a permanent magnet mounting frame 2, a first magnetic steel layer 3 and a second magnetic steel layer 4, wherein the round permanent magnet mounting frame 2 is sleeved on the rotor holder 1, the magnetic steel of the first magnetic steel layer 3 is arranged on the permanent magnet mounting frame 2, the magnetic steel of the second magnetic steel layer 4 is arranged on the first magnetic steel layer 3 in a staggered manner, the two layers of magnetic steel are stacked in a staggered manner, two rotor end plates are respectively pressed from the two axial ends from the outside to the inside to the center, and finally, fiber bands are uniformly wound on the outer wall surface of the magnetic steel of the second magnetic steel layer 4 along the circumference to fix the magnetic steel, so that the rotor strength is enhanced.
As shown in fig. 2, there are two layers of magnetic steel, namely 4 kinds of magnetic steel, which have different magnetizing directions, in which N represents N pole of magnetic steel, S represents S pole of magnetic steel, and two layers of magnetic steel are stacked alternately so that the magnetic lines of force form a complete path in the interior of the magnetic steel, and the specific path is shown in fig. 2.
The magnetizing modes of the first magnetic steel layer 3 magnetic steel are two, wherein the first magnetic steel layer is tangent to the inner and outer circular arc edges of the tile-shaped magnetic steel, and is magnetized clockwise, and the second magnetic steel layer is tangent to the inner and outer circular arc edges of the tile-shaped magnetic steel, and is magnetized anticlockwise; the magnetizing modes of the second magnetic steel layer 4 magnetic steel are two, wherein the first is radial magnetizing from the circle center to the circumferential direction, and the second is radial magnetizing from the circumferential direction to the circle center direction.
Claims (4)
1. The coreless permanent magnet synchronous motor rotor is characterized by comprising a rotor holder, a permanent magnet mounting frame, a first magnetic steel layer and a second magnetic steel layer, wherein the circular permanent magnet mounting frame is sleeved on the outer side of the rotor holder, magnetic steel is mounted on the permanent magnet mounting frame in a surface-mounted mounting mode, and the first magnetic steel layer and the second magnetic steel layer are mounted in a tile-shaped magnetic steel staggered mode.
2. The rotor of claim 1, wherein the rotor holder and the permanent magnet mounting frame are made of non-magnetic materials.
3. The coreless permanent magnet synchronous motor rotor of claim 1 wherein the tile-shaped magnet steel in the first magnet steel layer is aligned with the tile-shaped magnet steel in the second magnet steel layer in circumferential angle, the two magnet steels are staggered, and the magnet steel in the second magnet steel layer is staggered 1/2 of the circumferential angle of the single magnet steel relative to the magnet steel in the first magnet steel layer during installation.
4. The rotor of the coreless permanent magnet synchronous motor according to claim 1, wherein the first magnetic steel layer is magnetized in two ways, the first way is tangential to the inner and outer circular arc edges of the tile-shaped magnetic steel, the second way is tangential to the inner and outer circular arc edges of the tile-shaped magnetic steel, and the second way is magnetized in a counterclockwise direction; the magnetizing modes of the magnetic steel of the second magnetic steel layer are two, wherein the first is radial magnetizing from the circle center to the circumferential direction, and the second is radial magnetizing from the circumferential direction to the circle center direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321879634.XU CN220492719U (en) | 2023-07-18 | 2023-07-18 | Coreless permanent magnet synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321879634.XU CN220492719U (en) | 2023-07-18 | 2023-07-18 | Coreless permanent magnet synchronous motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220492719U true CN220492719U (en) | 2024-02-13 |
Family
ID=89837717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321879634.XU Active CN220492719U (en) | 2023-07-18 | 2023-07-18 | Coreless permanent magnet synchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220492719U (en) |
-
2023
- 2023-07-18 CN CN202321879634.XU patent/CN220492719U/en active Active
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