CN207368774U - A kind of pure sine wave permanent magnet machine rotor of anti-degaussing - Google Patents
A kind of pure sine wave permanent magnet machine rotor of anti-degaussing Download PDFInfo
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- CN207368774U CN207368774U CN201721371876.2U CN201721371876U CN207368774U CN 207368774 U CN207368774 U CN 207368774U CN 201721371876 U CN201721371876 U CN 201721371876U CN 207368774 U CN207368774 U CN 207368774U
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- permanent magnet
- degaussing
- air gap
- rotor
- rotor core
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Abstract
The utility model discloses a kind of pure sine wave permanent magnet machine rotor of anti-degaussing, including rotor core and multiple permanent magnets, there is multiple mounting grooves towards axle center on the rotor core, the permanent magnet is respectively arranged in the multiple mounting groove, formed with magnetic bridge between the lower section of adjacent two permanent magnet, an air gap hole is equipped between adjacent two permanent magnet, the air gap hole is with the permanent magnet of both sides apart from equal, the section outer surface of the rotor core is made of multiple identical segmental arcs, two permanent magnets, which are matched somebody with somebody, is combined into a pair, each pair permanent magnet is respectively placed in the inner side of a segmental arc.The air-gap field waveform zero crossing of the utility model will not be deviated due to the influence of armature-reaction, and because rectifying a deviation without extra increase position sensor, the cost that it is produced is lower.Due to increase air gap hole, rotor core localized magnetic circuit is set to ensure supersaturation, so as to resist the degaussing problem in larger magnetic field.Rotor outer circle surface is made of multiple circular arcs, and air-gap field distribution is in sine, thus motor can realize ride comfort, and noise is also lower.
Description
Technical field
The present invention relates to motor device field, more particularly to a kind of structure of rotor.
Background technology
Magnetic flux of the magneto per pole is in parallel by two pieces of permanent magnets and is provided, it can effectively improve stator and rotor
The magnetic flux density of intermediate air gap, and then increase the output performance of motor, this mode is widely used by industry all the time.So
And for waveform caused by existing motor, it can not effectively produce pure sine wave waveform, for non-sinusoidal waveform,
The generation of zero migration phenomenon is easy to cause when being squeezed due to waveform, this just needs position sensor to rectify a deviation.Can not have
Effect directly produces the reason for sine wave, not close enough in portion distribution mainly due to the magnetic field between the permanent magnet in rotor
Collection, it is more serious for the permanent magnet region leakage magnetic flux close to shaft one end, thus the utilization rate of permanent magnet is relatively low.In order to limit
Leakage field, the prior art employ many kinds of measures, as Patent No. 201410062516.9 discloses magneto and its rotor knot
Structure, it set below each pair permanent magnet connection every magnetic air gap, this mode can efficiently reduce leakage field, but be transported in motor
Armature-reaction is inevitably resulted from during row, since armature-reaction has demagnetizing effect, so that weaken the intensity of air-gap field,
Thus its waveform formed can be still affected to some extent, and can not produce effective sine waveform.Meanwhile in motor due to
Various electromagnetic interferences, its multiple harmonic produced can not effectively carry out counteracting separation, thus drastically influence it during motor operation
Service life.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of electricity for being conducive to improve electric moter voltage utilization rate and anti-degaussing
Motor rotor structure.
It is achieved through the following technical solutions above-mentioned purpose：
A kind of pure sine wave permanent magnet machine rotor of anti-degaussing, including rotor core and multiple permanent magnets, the rotor iron
There is multiple mounting grooves towards axle center, the permanent magnet is respectively arranged in the multiple mounting groove, adjacent two permanent magnetism on core
Formed with magnetic bridge between the lower section of body, an air gap hole, the permanent magnetism in the air gap hole and both sides are equipped between adjacent two permanent magnet
Body is made of apart from the section outer surface of equal, described rotor core multiple identical segmental arcs, and two permanent magnets, which are matched somebody with somebody, is combined into one
Right, each pair permanent magnet is respectively placed in the inner side of a segmental arc.
As further describing to a kind of above-mentioned pure sine wave permanent magnet machine rotor of anti-degaussing, the rotor core
It is outer to be surrounded by the stator that section is toroidal arrangement.
As being further described to a kind of above-mentioned pure sine wave permanent magnet machine rotor of anti-degaussing, the rotor iron
It is equidistant air gap or non-equidistant air gap between core and stator medial surface.
The beneficial effects of the invention are as follows：
1st, increase is anti-removes magnet, not can bypass to resist through the magnetic flux of whole rotor core and goes magnet positions, improves magnetic pole magnetic
Field intensity, so as to improve air-gap field and enhancing rotor resistance degaussing ability.
2nd, rotor core outer round surface is made of multiple circular arcs, and air-gap field distribution is in sine, can be had more preferably just
String baud point, thus motor can realize ride comfort, noise is also lower.
3rd, air-gap field waveform zero crossing will not be deviated due to the influence of armature-reaction, because without extra increase position
Sensor is rectified a deviation, and the cost that it is produced is lower.
Brief description of the drawings
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the decomposition diagram of fundamental wave and 3 subharmonic in the present invention.
Embodiment
The present invention is further described below：
With reference to Fig. 1-2, a kind of pure sine wave permanent magnet machine rotor of anti-degaussing, including rotor core 1 and multiple permanent magnets
2, there is multiple mounting grooves towards axle center on the rotor core 1, the permanent magnet is respectively arranged at the multiple mounting groove
It is interior, formed with magnetic bridge between the lower section of adjacent two permanent magnet, an air gap hole 3, the air gap are equipped between adjacent two permanent magnet
Hole is made of with the permanent magnet of both sides apart from the section outer surface of equal, described rotor core multiple identical segmental arcs, and two
For permanent magnet with a pair is combined into, each pair permanent magnet is respectively placed in the inner side of a segmental arc.
Air gap hole is set in the position of pole center line, and Distribution of Magnetic Field can be made to be more uniformly distributed and saturation, thus reach to
Resist the degaussing problem in big magnetic field.
As further describing to a kind of above-mentioned pure sine wave permanent magnet machine rotor of anti-degaussing, the rotor core
It is outer to be surrounded by the stator that section is toroidal arrangement.
As being further described to a kind of above-mentioned pure sine wave permanent magnet machine rotor of anti-degaussing, the rotor iron
It is equidistant air gap or non-equidistant air gap between 4 medial surface of core and stator.
In above-mentioned rotor and stator produce the waveform of back-emf, the spacing between both is using non-equidistant
Air gap, can eliminate and reduce higher hamonic wave, for the structure setting in addition to it can form 1 sinusoidal fundamental wave, it is also surplus
3 subharmonic of remaining accounting maximum, since 3 subharmonic can imitate counteracting to 3 phase motors, other harmonic waves are for electricity
It is smaller and be all that the clutter that can be conveniently handled is eliminated the effects of the act for machine, thus it is with preferable sine wave characteristics,
This is advantageous for the voltage utilization for improving motor.
The above is not intended to limit the scope of the present invention, and all foundation the technology of the present invention are substantially to the above
Any modification, equivalent variations and the modification that embodiment is made, in the range of still falling within technical scheme.
Claims (3)
1. a kind of pure sine wave permanent magnet machine rotor of anti-degaussing, including rotor core and multiple permanent magnets, the rotor core
Upper to have multiple mounting grooves towards axle center, the permanent magnet is respectively arranged in the multiple mounting groove, adjacent two permanent magnet
Lower section between formed with magnetic bridge, it is characterised in that：An air gap hole hollowed out, the air gap are equipped between adjacent two permanent magnet
Hole is made of with the permanent magnet of both sides apart from the section outer surface of equal, described rotor core multiple identical segmental arcs, and two
For permanent magnet with a pair is combined into, each pair permanent magnet is respectively placed in the inner side of a segmental arc.
A kind of 2. pure sine wave permanent magnet machine rotor of anti-degaussing according to claim 1, it is characterised in that：Described turns
The stator that section is toroidal arrangement is surrounded by outside sub- iron core.
A kind of 3. pure sine wave permanent magnet machine rotor of anti-degaussing according to claim 2, it is characterised in that：Described turns
It is equidistant air gap or non-equidistant air gap between sub- iron core and stator medial surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371876.2U CN207368774U (en) | 2017-10-24 | 2017-10-24 | A kind of pure sine wave permanent magnet machine rotor of anti-degaussing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371876.2U CN207368774U (en) | 2017-10-24 | 2017-10-24 | A kind of pure sine wave permanent magnet machine rotor of anti-degaussing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368774U true CN207368774U (en) | 2018-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201721371876.2U Active CN207368774U (en) | 2017-10-24 | 2017-10-24 | A kind of pure sine wave permanent magnet machine rotor of anti-degaussing |
Country Status (1)
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| CN (1) | CN207368774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516954A (en) * | 2017-10-24 | 2017-12-26 | 东莞市博瓦特动力科技有限公司 | A kind of pure sine wave permanent magnet machine rotor of anti-degaussing |
-
2017
- 2017-10-24 CN CN201721371876.2U patent/CN207368774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516954A (en) * | 2017-10-24 | 2017-12-26 | 东莞市博瓦特动力科技有限公司 | A kind of pure sine wave permanent magnet machine rotor of anti-degaussing |
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