CN207353934U - A kind of rotor structure of rare-earth permanent-magnet electric machine - Google Patents
A kind of rotor structure of rare-earth permanent-magnet electric machine Download PDFInfo
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- CN207353934U CN207353934U CN201721335060.4U CN201721335060U CN207353934U CN 207353934 U CN207353934 U CN 207353934U CN 201721335060 U CN201721335060 U CN 201721335060U CN 207353934 U CN207353934 U CN 207353934U
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Abstract
The utility model discloses a kind of rotor structure of rare-earth permanent-magnet electric machine, the technical solution of the utility model main points are, a kind of rotor structure of rare-earth permanent-magnet electric machine, it includes rotor core, in the outside of rotor core special-shaped cage bar is equipped with along rotor axial is equidistantly uniformly distributed between conventional cage bar, the base angle of the special-shaped centripetal part of cage bar is stuck in the fluting of shape corresponding to the silicon steel sheet on rotor core, and special-shaped cage bar both ends are fixedly connected with end ring, and permanent magnet is studded between special-shaped cage bar.The beneficial effects of the utility model are effectively flux path can be avoided to be squeezed and irreversible mechanically deform occurs, and structure is reliable.
Description
Technical field
Motor is the utility model is related to, particularly a kind of rotor structure of rare-earth permanent-magnet electric machine.
Background technology
Magneto has the advantages that loss is low, efficient, in the present that the saving energy and environmental protection are paid more and more attention
My god, application is more and more extensive.Such as：Wind turbine, water pump, compressor etc. are with continuous, the applied field of constant speed and one direction operation
Close, common asynchronous moter is caused the waste of electric energy due to reasons such as efficiency, power factors, just gradually substituted by magneto.Together
When, many industrial machineries, its speed of service needs any setting and adjusting, but velocity control accuracy is of less demanding, permanent-magnet synchronous
Motor due to small, it is energy-efficient the advantages that, be increasingly becoming the major product of the occasion.
At present, high power permanent magnet synchronous motor just becomes mainstream development direction, and compared with electric excitation synchronous motor, permanent magnetism is same
Walk motor and Exciting Windings for Transverse Differential Protection and DC excitation power is not required, eliminate collector ring and brush dress on easy out of order rotor
Put, become brushless electric machine, there is no the copper loss of Exciting Windings for Transverse Differential Protection, and the electric efficiency than the electric excitation type of same capacity is high, and structure is more
Simply, run more reliable.
There is surface-mount type in permanent-magnetic synchronous motor rotor mosaic magnet with embedding two kinds；But for the big work(of permanent magnet external mounting type
Rate permanent magnet synchronous motor, the magnetic field of permanent magnet between two neighboring pole easily directly connect, can produce leakage field, cause permanent-magnet material
Utilization rate is not high；For rotor in rotary course, permanent magnet is subject to the centrifugal force for rotating against direction, is easily squeezed flux path
Press and irreversible mechanically deform occurs.
The content of the invention
The purpose of this utility model is to design a kind of rotor knot of rare-earth permanent-magnet electric machine rational in infrastructure, using effect is good
Structure.
The technical solution of the utility model is a kind of rotor structure of rare-earth permanent-magnet electric machine, it includes rotor core, it is special
Sign is：In the outside of rotor core special-shaped cage bar, special-shaped cage are equipped with along rotor axial is equidistantly uniformly distributed between conventional cage bar
The base angle of the centripetal part of bar is stuck in the fluting of shape corresponding to the silicon steel sheet on rotor core, and special-shaped cage bar both ends are consolidated with end ring
It is fixed to connect, stud with permanent magnet between special-shaped cage bar.The section of the special-shaped cage bar is I-shaped.
The beneficial effects of the utility model are effectively flux path can be avoided to be squeezed and irreversible machinery occurs and becomes
Shape, and structure is reliable.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model,
Fig. 2 is the A portions partial enlarged view of Fig. 1.
Embodiment
Embodiment is described in detail with reference to the figures above,
A kind of rotor structure of rare-earth permanent-magnet electric machine, it includes rotor core 1, in the outside of rotor core along rotor axial
Equidistantly uniformly distributed between conventional cage bar 2 to be equipped with special-shaped cage bar 3, the base angle of the special-shaped centripetal part of cage bar is stuck on rotor core
In the fluting 4 of shape corresponding to silicon steel sheet, special-shaped cage bar both ends are fixedly connected with end ring, and permanent magnet is studded between special-shaped cage bar；
The section of special-shaped cage bar described in the present embodiment is I-shaped；Aluminium block, which can also be welded, in the end ring periphery of two ends of rotor prevents
Permanent magnet axial motion.
The length of different in nature cage bar is longer than end ring, and so different in nature cage bar can both be used as cage bar, while the wind by possessing
The partial function of fan, can produce certain air quantity, easy to the internal cooling of motor.
The each permanent magnet for being stuck in adjacent different in nature cage bar uses chamfered in the direction of magnetization, to prevent to the full extent
When electrical fault is run, demagnetizing effect that electric current produces permanent magnet.
I-shaped irregular strip is as cage bar, cage bar both ends and end ring welding composition mouse cage.
Due to power of motor it is larger when, the permanent magnet volume of needs of the rotor per pole is larger, and it is single to cause to be difficult to directly manufacture
The permanent magnet of block, or to allow to manufacture installation also cumbersome, in the present invention, rotor permanent magnet that adjacent cage bar is formed
Multiple permanent magnets are set in groove, can have between each permanent magnet axial direction or axial direction fritter set of permanent magnets into.
The above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.For institute
For the those of ordinary skill in category field, other various forms of changes or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments, and the obvious change or change thus extended out
Within the dynamic protection domain created still in the utility model.
Claims (2)
1. a kind of rotor structure of rare-earth permanent-magnet electric machine, it includes rotor core, it is characterised in that：On the outside edge of rotor core
Rotor axial is equidistantly uniformly distributed between conventional cage bar to be equipped with special-shaped cage bar, and the base angle of the special-shaped centripetal part of cage bar is stuck in rotor iron
In the fluting of shape corresponding to silicon steel sheet on core, special-shaped cage bar both ends are fixedly connected with end ring, are studded with forever between special-shaped cage bar
Magnet.
A kind of 2. rotor structure of rare-earth permanent-magnet electric machine as claimed in claim 1, it is characterised in that：The special-shaped cage bar
Section is I-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721335060.4U CN207353934U (en) | 2017-10-17 | 2017-10-17 | A kind of rotor structure of rare-earth permanent-magnet electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721335060.4U CN207353934U (en) | 2017-10-17 | 2017-10-17 | A kind of rotor structure of rare-earth permanent-magnet electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353934U true CN207353934U (en) | 2018-05-11 |
Family
ID=62355164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721335060.4U Active CN207353934U (en) | 2017-10-17 | 2017-10-17 | A kind of rotor structure of rare-earth permanent-magnet electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098679A (en) * | 2019-05-29 | 2019-08-06 | 河南全新机电设备有限公司 | A kind of permanent magnet synchronous motor reconstruction structure |
-
2017
- 2017-10-17 CN CN201721335060.4U patent/CN207353934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098679A (en) * | 2019-05-29 | 2019-08-06 | 河南全新机电设备有限公司 | A kind of permanent magnet synchronous motor reconstruction structure |
| CN110098679B (en) * | 2019-05-29 | 2024-04-30 | 河南全新机电设备有限公司 | Permanent magnet synchronous motor transformation structure |
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