CN107565786B - Permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN107565786B CN107565786B CN201710961419.7A CN201710961419A CN107565786B CN 107565786 B CN107565786 B CN 107565786B CN 201710961419 A CN201710961419 A CN 201710961419A CN 107565786 B CN107565786 B CN 107565786B
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- permanent magnets
- shaped cage
- permanent magnet
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 14
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 4
- 230000005389 magnetism Effects 0.000 claims abstract description 4
- 230000002427 irreversible effect Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000555745 Sciuridae Species 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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)
Abstract
The invention discloses a permanent magnet synchronous motor, which comprises a rotor core, wherein special-shaped cage bars are arranged on the outer side of the rotor core along the axial direction of the rotor, bottom corners of centripetal parts of the special-shaped cage bars are clamped in grooves with shapes corresponding to silicon steel sheets on the rotor core, two ends of the special-shaped cage bars are fixedly connected with end rings, permanent magnets are inlaid between the special-shaped cage bars, the magnetism of the permanent magnets between two adjacent poles is opposite, and the polarities of the permanent magnets between two adjacent I-shaped special-shaped bars in one polar region are the same. The invention has the advantages of effectively avoiding irreversible mechanical deformation caused by extrusion of the magnetic path and having reliable structure.
Description
Technical Field
The invention relates to a motor, in particular to a high-power permanent magnet synchronous motor.
Background
The permanent magnet motor has the advantages of low loss, high efficiency and the like, and is increasingly widely applied at present of increasingly important energy conservation and environmental protection. Such as: in the application occasions where fans, water pumps, compressors and the like run continuously at a constant speed in one direction, common asynchronous motors are gradually replaced by permanent magnet motors due to waste of electric energy caused by efficiency, power factors and the like. Meanwhile, the running speed of many industrial machines needs to be set and regulated at will, but the speed control precision is not high, and the permanent magnet synchronous motor is becoming a main product in the occasion due to the advantages of small volume, high efficiency, energy saving and the like.
At present, a high-power permanent magnet synchronous motor is becoming a mainstream development direction, and compared with an electric excitation synchronous motor, the permanent magnet synchronous motor does not need an excitation winding and a direct current excitation power supply, a collecting ring and a brush device on a rotor which is easy to break down are canceled, the motor becomes a brushless motor, copper loss of the excitation winding does not exist, and compared with the electric excitation type motor with the same capacity, the motor has high efficiency, simpler structure and more reliable operation.
The permanent magnet inlaid permanent magnet of the rotor of the permanent magnet synchronous motor is provided with a surface-mounted type and an embedded type; however, for a high-power permanent magnet synchronous motor with embedded permanent magnets, the magnetic fields of the permanent magnets between two adjacent poles are easy to be directly communicated, so that magnetic leakage can occur, and the utilization rate of permanent magnet materials is low; during rotation of the rotor, the permanent magnets are subjected to centrifugal force in the relative rotation direction, and the magnetic paths are easily pressed to generate irreversible mechanical deformation.
Disclosure of Invention
The invention aims to design a permanent magnet synchronous motor with reasonable structure and good use effect.
The technical scheme of the invention is that the permanent magnet synchronous motor comprises a rotor core and is characterized in that: the outside of the rotor core is provided with special-shaped cage bars along the axial direction of the rotor, bottom corners of centripetal parts of the special-shaped cage bars are clamped in grooves with shapes corresponding to silicon steel sheets on the rotor core, two ends of each special-shaped cage bar are fixedly connected with end rings, permanent magnets are inlaid between the special-shaped cage bars, the magnetism of the permanent magnets between two adjacent poles is opposite, and the polarities of the permanent magnets between two adjacent I-shaped special-shaped bars in one polar region are the same. The section of the special-shaped cage bar is hyperbolic.
The invention has the advantages of effectively avoiding irreversible mechanical deformation caused by extrusion of the magnetic path and having reliable structure.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is a side view of the present invention,
fig. 3 is a schematic structural view of the profiled cage bars of the present invention.
Detailed Description
The embodiments are described in detail in connection with the above figures,
a permanent magnet synchronous motor comprises a rotor core 1, wherein a special-shaped cage bar 2 is arranged on the outer side of the rotor core along the axial direction of the rotor, the bottom angle of the centripetal part of the special-shaped cage bar is clamped in a groove with a shape corresponding to a silicon steel sheet on the rotor core, two ends of the special-shaped cage bar are fixedly connected with an end ring 4, permanent magnets 3 are inlaid between the special-shaped cage bars, the magnetism of the permanent magnets between two adjacent poles is opposite, and the polarities of the permanent magnets between the adjacent I-shaped special-shaped bars in one polar region are the same; the cross section of the special-shaped cage bar in the embodiment is hyperbola.
And each permanent magnet clamped on the adjacent opposite cage bars adopts chamfering treatment in the magnetization direction so as to prevent the demagnetizing effect of current on the permanent magnet to the greatest extent when the motor runs in fault.
The special-shaped strips are used as cage strips, and two ends of each cage strip are welded with the end rings to form the squirrel cage.
Because the volume of the required permanent magnet of each pole of the rotor is larger when the power of the motor is larger, the direct manufacture of a single permanent magnet is difficult, or even the manufacture and the installation are troublesome, in the invention, a plurality of permanent magnets are arranged in the rotor permanent magnet grooves formed by adjacent cage bars, and each permanent magnet can be composed of small permanent magnets in the axial direction or between the axial directions.
The above examples are given for clarity of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it intended that all embodiments be exhaustive, but obvious variations or modifications that come within the scope of the invention are possible.
Claims (1)
1. The utility model provides a permanent magnet synchronous motor, it includes rotor core, its characterized in that: the outer side of the rotor core is provided with a special-shaped cage bar along the axial direction of the rotor, the bottom angle of the centripetal part of the special-shaped cage bar is clamped in a groove with a shape corresponding to the silicon steel sheet on the rotor core, two ends of the special-shaped cage bar are fixedly connected with an end ring, permanent magnets are inlaid between the special-shaped cage bars, the magnetism of the permanent magnets between two adjacent poles is opposite, the polarities of the permanent magnets between two adjacent I-shaped special-shaped bars in one polar region are the same, and the section of the special-shaped cage bar is hyperbolic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961419.7A CN107565786B (en) | 2017-10-17 | 2017-10-17 | Permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961419.7A CN107565786B (en) | 2017-10-17 | 2017-10-17 | Permanent magnet synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107565786A CN107565786A (en) | 2018-01-09 |
| CN107565786B true CN107565786B (en) | 2023-08-11 |
Family
ID=60986267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710961419.7A Active CN107565786B (en) | 2017-10-17 | 2017-10-17 | Permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107565786B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991903A (en) * | 2021-11-08 | 2022-01-28 | 日本电产凯宇汽车电器（江苏）有限公司 | Cage type rotor injection molding structure for brushless motor and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| CN102170200A (en) * | 2010-11-19 | 2011-08-31 | 王乃兵 | Method for manufacturing walking-connection arrow type rotor of PMSM (permanent magnet synchronous motor) |
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| CN105604136A (en) * | 2015-10-08 | 2016-05-25 | 浙江创美机电有限公司 | Constant-pressure non-negative pressure water supplying unit adopting permanent magnet synchronous motors |
| CN205355989U (en) * | 2016-01-19 | 2016-06-29 | 尚勤贵 | Self -starting permanent magnet synchronous motor's rotor |
| WO2016192582A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9923440B2 (en) * | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
-
2017
- 2017-10-17 CN CN201710961419.7A patent/CN107565786B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944788A (en) * | 2010-07-06 | 2011-01-12 | 东元总合科技（杭州）有限公司 | Rotor of high-power permanent magnet motor and permanent magnet synchronous wind-driven generator using same |
| CN102170200A (en) * | 2010-11-19 | 2011-08-31 | 王乃兵 | Method for manufacturing walking-connection arrow type rotor of PMSM (permanent magnet synchronous motor) |
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| WO2016192582A1 (en) * | 2015-05-29 | 2016-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet motor rotor and permanent magnet synchronous motor |
| CN105604136A (en) * | 2015-10-08 | 2016-05-25 | 浙江创美机电有限公司 | Constant-pressure non-negative pressure water supplying unit adopting permanent magnet synchronous motors |
| CN205355989U (en) * | 2016-01-19 | 2016-06-29 | 尚勤贵 | Self -starting permanent magnet synchronous motor's rotor |
Non-Patent Citations (1)
| Title |
|---|
| 双转子电机及其在混合电动汽车中的应用;莫丽红;全力;朱孝勇;张涛;;武汉大学学报(工学版)(04);全文 * |
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| Publication number | Publication date |
|---|---|
| CN107565786A (en) | 2018-01-09 |
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