CN206962565U - A kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor - Google Patents
A kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor Download PDFInfo
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- CN206962565U CN206962565U CN201720740077.1U CN201720740077U CN206962565U CN 206962565 U CN206962565 U CN 206962565U CN 201720740077 U CN201720740077 U CN 201720740077U CN 206962565 U CN206962565 U CN 206962565U
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- synchronous motor
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
It the utility model is related to a kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor, rotor includes rotor core (1), rotor core (1) is provided with multigroup around rotor core (1) central shaft magnetic groove that circumferentially shape is distributed, permanent magnet (4) is provided with magnetic groove, magnetic groove is compound magnetic groove, every group of compound magnetic groove includes " V " type groove (2) and " double one " type grooves (3) being arranged on the inside of " V " type groove (2) openend, " double one " type grooves (3) are made up of two " one " type grooves of axis point-blank, combined magnetic circuit permagnetic synchronous motor includes the rotor and the stator being set in outside rotor.Compared with prior art, it is of the present utility model it is dynamic, steady-state behaviour is stronger, unloaded magnetic leakage factor reduces, and compared to pure " V " type magnetic circuit and " one " type magnetic circuit, the risk that permanent magnet permanently demagnetizes in unusual service condition greatly reduces.
Description
Technical field
The utility model belongs to technical field of motors, more particularly, to a kind of combined magnetic circuit permagnetic synchronous motor and combination magnetic
Road permanent-magnetic synchronous motor rotor.
Background technology
Magneto influences permanent-magnet synchronous because the superior performance of each side is widely used in current every field
The biggest factor of electrical machinery life is exactly that permanent magnet can produce irreversible demagnetization at high temperature.Research shows the arrangement shape of permanent magnet
Formula can demagnetize to permanent magnet has material impact, therefore domestic and foreign scholars work out miscellaneous magnetic circuit form.In short-circuit event
During barrier, the magnet steel in " V " type groove of high-coercive force is easiest to demagnetize, and in torque capacity, the magnet steel in " one " type groove most easily moves back
Magnetic.
The reason for making permanent magnet demagnetize high temperature also with motor internal, fault, the factor such as operation overload it is relevant, and
And the permanent magnet of built-in magnetic circuit is all one piece one piece and is fixed on internal rotor, so permanent magnet demagnetization can seriously cause whole turn
Sub- iron core is scrapped.And prior art prevents permanent magnet demagnetization from all relying on the protection of controller and sensor in abnormal cases and moving
Make, there is larger risk.Therefore the magnetic circuit of study of various spread pattern is to prevent permanent magnet from producing irreversible demagnetization and seeming outstanding
To be important.
The content of the invention
The purpose of this utility model is exactly a kind of dynamic, stability in order to be provided the defects of overcoming above-mentioned prior art to exist
Can be stronger, unloaded magnetic leakage factor reduces, and compared to pure " V " type magnetic circuit and " one " type magnetic circuit, in unusual service condition, permanent magnet is permanent
Property demagnetization risk the combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor that greatly reduce.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of combined magnetic circuit permanent-magnetic synchronous motor rotor, including rotor core, described rotor core are provided with multigroup rotate
The son central shaft unshakable in one's determination magnetic groove that circumferentially shape is distributed, described magnetic groove is interior to be provided with permanent magnet, and described magnetic groove is compound magnetic groove, often
The compound magnetic groove of group include " V " type groove and one be arranged on the inside of " V " type groove openend " double one " type grooves, described is " double
One " type groove is made up of two " one " type grooves of axis point-blank.
As preferred embodiment, described " V " type groove is made up of two sectional grooves, two " one " type grooves and two points
Section groove is symmetrical respectively about the same plane for crossing rotor core central shaft.
As preferred embodiment, " angle between two sectional grooves of V " type grooves and rotor size and it is selected forever
Magnet number of pole-pairs etc. is relevant.
As preferred embodiment, permanent magnet is equipped with each sectional grooves and " one " type groove.
As preferred embodiment, between described sectional grooves and " one " type groove have between the permanent magnet in its groove
Gap, binder is filled with gap.
As preferred embodiment, described permanent magnet is segmentation permanent magnet.
As preferred embodiment, described segmentation permanent magnet is axial segmentation permanent magnet.
As preferred embodiment, the permanent magnet in described sectional grooves and " one " type groove is material identical permanent magnetism
Body.
As preferred embodiment, described " V " type groove and " double one " type grooves have the magnetic bridge of equal length.
A kind of combined magnetic circuit permagnetic synchronous motor, including described rotor and the stator that is set in outside rotor.
As preferable technical scheme, described stator medial surface is provided with the magnetic boots for being used for protecting permanent magnet.
Compared with prior art, the advantages of combining " V " type magnetic circuit and " one " type magnetic circuit of the utility model creativeness, and
" one " type magnetic circuit is divided into two to form a kind of " double one " type magnetic circuits, so as to be combined into novel magnetic circuit, compared to single
Built-in magnetic line structure has preferably dynamic, steady-state behaviour；Under unusual service condition, it can effectively prevent permanent magnet from producing irreversible move back
Magnetic and the iron loss in magneto can be effectively reduced, and the convex grey subset of the composite magnetic circuit and reluctance torque are bigger, therefore can
The power density and overload capacity of permagnetic synchronous motor are improved using this characteristic；Using " purpose of double one " type grooves is to ensure to turn
Sub- iron core has enough mechanical strengths and improves the utilization rate of permanent magnet.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the permanent-magnetic synchronous motor rotor of prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the schematic cross-section of rotor 1/8 of the utility model embodiment 1；
Fig. 4 is the emulation motor output torque figure of the permagnetic synchronous motor of embodiment 1；
Fig. 5 is the emulation rotor core damage curve of the permagnetic synchronous motor of embodiment 1.
In figure, 1 is rotor core, and 2 be " V " type magnetic groove, and 3 are " double one " type magnetic grooves, 4 be permanent magnet, and 5 be magnetic bridge.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of combined magnetic circuit permanent-magnetic synchronous motor rotor, as shown in figures 2-3, including rotor core 1, the rotor core 1 are set
There is the magnetic groove of multigroup (the present embodiment be eight groups) around the circumferentially shape distribution of the central shaft of rotor core 1, magnetic groove is compound magnetic groove, magnetic groove
Interior to be provided with permanent magnet 4, every group of compound magnetic groove is arranged on " double on the inside of the openend of " V " type groove 2 including " V " type groove 2 and one
One " type groove 3, " double one " type grooves 3 are made up of two " one " type grooves of axis point-blank." V " type groove 2 is by two sectional grooves
Composition, on any cross section of rotor core 1, two ends of the openend of " V " type groove and the company of the central shaft of rotor core 1
The angle α of line is that 40.5 ° (as shown in Figure 1), two " one " type grooves and two sectional grooves cross rotor core 1 respectively about same
The plane of central shaft is symmetrical, can reduce the bias of rotor.Permanent magnet 4 is equipped with each sectional grooves and " one " type groove, to prevent
Permanent-magnetism synchronous motor permanent magnetic body Phenomenon of Eddy-Current is serious, and permanent magnet 4 can use segmentation permanent magnet, specifically, the present embodiment
Using axial segmentation permanent magnet, and material is identical, is neodymium iron boron (N35UH) material, the thickness of every section of permanent magnet in " V " type groove
Spend for 7.9mm, width 35.8mm, length 14mm.Rotor axial direction length is 140mm, and 20 are therefore amounted in " V " type groove
Section permanent magnet (10 sections of permanent magnets in each sectional grooves)；" every section of permanent magnet is small compared to " V " type groove in double one " type grooves.It is thick
Spend for 5mm, width 22.5mm, length 28mm, 10 sections altogether.Sectional grooves and " one " type groove with the permanent magnet 4 in its groove
Between there is gap, be filled with binder in gap, prevent that permanent magnet comes off during motor operation." V " type groove 2 and " double one " type grooves
3 have the magnetic bridge 5 of equal length.
Combined magnetic circuit permanent-magnetic synchronous motor rotor of the present utility model can make by the following technical programs：
(1) by opening up " V " type groove and " double one " type grooves, " double one " type grooves are by axis at one first in rotor core
Two " one " type grooves composition on straight line, and have among two " one " type grooves with " V " type groove identical magnetic circuit, and make " V " type
Groove and " magnetic bridge of double one " type grooves with equal length and the pole shoe all with protection permanent magnet；
(2) permanent magnet of segmentation is sequentially inserted into " V " type groove and " in double one " type grooves in order；
(3) in permanent magnet and " V " type groove and " inject makes the glue (binder) of both fixations in the gap of double one " type grooves in；
(4) rotor core for having injected glue is placed in natural air drying at drying.
By permanent-magnetic synchronous motor rotor of the present utility model and stator composition permagnetic synchronous motor, stator medial surface is provided with
For protecting the magnetic boots of permanent magnet 4.Field measurement various aspects of performance index, it is 3070rad/ that a rated speed is chosen in experiment
Min, rated output moment of torsion are 280Nm, and rated output power is 90kW permagnetic synchronous motor.Rotor diameter 163mm, internal diameter
For 100mm.Fig. 4 is emulation motor output torque figure, and experimental result and simulation result are contrasted, and is powered sinusoidal with PWM
In the case of, the synchronous motor that can obtain the more existing same nominal power of output torque improves performance, and motor output torque rises
About 10Nm；Fig. 5 is emulation rotor core damage curve, and permagnetic synchronous motor also has larger reduction, motor iron in the loss of electric machine
Consumption reduces about 40W when running under nominal power, rotor core loss is lower, then permanent magnet produces the wind of irreversible demagnetization
Danger will greatly reduce.
Compared with the permanent-magnetic synchronous motor rotor of " V " type magnetic circuit of the prior art shown in Fig. 1, it is of the present utility model it is dynamic,
Steady-state behaviour is stronger, and unloaded magnetic leakage factor reduces, and compared to pure " V " type magnetic circuit and " one " type magnetic circuit, the permanent magnetism in unusual service condition
The risk that body permanently demagnetizes greatly reduces.
Claims (10)
1. a kind of combined magnetic circuit permanent-magnetic synchronous motor rotor, including rotor core (1), described rotor core (1) is provided with multigroup
Around rotor core (1) central shaft magnetic groove that circumferentially shape is distributed, permanent magnet (4) is provided with described magnetic groove, it is characterised in that institute
The magnetic groove stated is compound magnetic groove, and every group of compound magnetic groove includes " V " type groove (2) and one is arranged on " V " type groove (2) openend
Inner side " double one " type grooves (3), described " double one " type grooves (3) are made up of two " one " type grooves of axis point-blank.
A kind of 2. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that described " V " type
Groove (2) is made up of two sectional grooves, and two " one " type grooves and two sectional grooves cross rotor core (1) center respectively about same
The plane of axle is symmetrical.
A kind of 3. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 2, it is characterised in that each sectional grooves and
Permanent magnet (4) is equipped with " one " type groove.
A kind of 4. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 3, it is characterised in that described sectional grooves
" one " type groove has gap between the permanent magnet (4) in its groove, and binder is filled with gap.
A kind of 5. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 1 or 3, it is characterised in that it is described forever
Magnet (4) is segmentation permanent magnet.
6. a kind of combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 5, it is characterised in that described segmentation is forever
Magnet is axial segmentation permanent magnet.
A kind of 7. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 3, it is characterised in that described sectional grooves
Permanent magnet (4) in " one " type groove is material identical permanent magnet (4).
A kind of 8. combined magnetic circuit permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that described " V " type
Groove (2) and " magnetic bridge (5) of double one " type grooves (3) with equal length.
9. a kind of combined magnetic circuit permagnetic synchronous motor, it is characterised in that including claim 1~8 any described rotor and set
The stator being located at outside rotor.
10. a kind of combined magnetic circuit permagnetic synchronous motor according to claim 9, it is characterised in that on the inside of described stator
Face is provided with the magnetic boots for being used for protecting permanent magnet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740077.1U CN206962565U (en) | 2017-06-23 | 2017-06-23 | A kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740077.1U CN206962565U (en) | 2017-06-23 | 2017-06-23 | A kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor |
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| Publication Number | Publication Date |
|---|---|
| CN206962565U true CN206962565U (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720740077.1U Expired - Fee Related CN206962565U (en) | 2017-06-23 | 2017-06-23 | A kind of combined magnetic circuit permagnetic synchronous motor and combined magnetic circuit permanent-magnetic synchronous motor rotor |
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| CN (1) | CN206962565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660042A (en) * | 2019-01-16 | 2019-04-19 | 华中科技大学 | A kind of tandem type hybrid permanent magnet change flux electric machine |
-
2017
- 2017-06-23 CN CN201720740077.1U patent/CN206962565U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660042A (en) * | 2019-01-16 | 2019-04-19 | 华中科技大学 | A kind of tandem type hybrid permanent magnet change flux electric machine |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 Termination date: 20210623 |