CN206759191U - A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle - Google Patents
A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle Download PDFInfo
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- CN206759191U CN206759191U CN201720400211.3U CN201720400211U CN206759191U CN 206759191 U CN206759191 U CN 206759191U CN 201720400211 U CN201720400211 U CN 201720400211U CN 206759191 U CN206759191 U CN 206759191U
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- electric vehicle
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- 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
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Abstract
The utility model discloses a kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle, in the high rotating speed permagnetic synchronous motor of high density used for electric vehicle, wherein, permagnetic synchronous motor is additionally provided with stator, and air gap is provided between the rotor and stator, and the rotor is not rounded rotor structure, the air gap of motor is non-isometric, the length of air gap is change, the gas length δ=f (E0), calculates and exports different δ values；Then these δ value points are connected into smooth curve and obtains the appearance and size of rotor.Thus so that back emf waveform be improved significantly, close to sine wave, so as to reduce electromagnetic noise, improve efficiency and power factor.
Description
Technical field
Permasyn morot accessory technical field is the utility model is related to, particularly relates to a kind of high density used for electric vehicle
High rotating speed permanent-magnetic synchronous motor rotor.
Background technology
The rotor configurations that permagnetic synchronous motor uses at present are arranged using embedded V-shaped mostly, as depicted in figs. 1 and 2,
Including stator 10 and rotor 20 and magnet steel 30, there is air gap 40 between rotor 20 and stator 10；The advantages of structure is magnetic field magnetic
The line of force is consistent with magnetic circuit, and magnetic resistance is small, and the utilization rate of magnet steel 30 is high, and production technology is good, and the efficiency of motor is also higher.But by
Air gap 40 between rotor 20 and stator 10 is equidistant, and it is close to cause the magnetic flux in the region in a big way of each magnetic pole
, the result is that the back emf waveform distortion of motor, as shown in figure 3, not being sine wave, there is wider flat-top.This mistake
The shortcomings that genuine back emf waveform can cause higher hamonic wave excessive, produce electromagnetic noise, and power factor declines.
Therefore, it is necessary to a kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle is designed, it is above-mentioned to solve
Technical problem.
Utility model content
For problem present in background technology, it is high that the purpose of this utility model is to provide a kind of high density used for electric vehicle
Rotating speed permanent-magnetic synchronous motor rotor, electromagnetic noise can be reduced, improve efficiency and power factor.
What the technical solution of the utility model was realized in：A kind of high rotating speed permanent magnet synchronous electric of high density used for electric vehicle
Machine rotor, in the high rotating speed permagnetic synchronous motor of high density used for electric vehicle, it is characterised in that：The permagnetic synchronous motor is also
Provided with stator, air gap is provided between the rotor and stator, the rotor is not rounded rotor structure, and the air gap is non-equidistant,
The length of the air gap is change, and the calculation formula of the gas length is：δ=f (E0), wherein, δ is gas length, E0
It is counter electromotive force；The calculation formula of the counter electromotive force E0 is：E0=Em*sin (θ), wherein, Em is counter electromotive force peak value, and θ is
Electrical angle；The smooth curve that different δ values derived from δ=f (E0) connect into is rotor profile size.
In the above-mentioned technical solutions, the counter electromotive force E0 is sinusoidal cycles function, and the gas length is also to become in the cycle
Change.
The high rotating speed permanent-magnetic synchronous motor rotor of the utility model high density used for electric vehicle, by changing rotor structure, makes
Rotor is not rounded rotor structure, and the air gap for making motor is non-isometric, and the length of air gap is change, according to gas length δ=f
(E0), calculate and export different δ values；Then these δ value points are connected into smooth curve and obtains the appearance and size of rotor.Thus,
So that back emf waveform be improved significantly, close to sine wave, so as to reduce electromagnetic noise, improve efficiency and power factor.
Brief description of the drawings
Fig. 1 is the complete stator of prior art, rotor schematic diagram；
Fig. 2 is Fig. 1 part-structure schematic diagrams；
Fig. 3 is the back emf waveform figure of motor in the prior art；
Fig. 4 is the complete stator of the utility model, rotor schematic diagram；
Fig. 5 is Fig. 4 part-structure schematic diagrams；
Fig. 6 is the back emf waveform figure of motor in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in Figure 4 and Figure 5, a kind of high rotating speed permagnetic synchronous motor of high density used for electric vehicle described in the utility model
Rotor 1, in the high rotating speed permagnetic synchronous motor of high density used for electric vehicle, wherein, it is fixed that the permagnetic synchronous motor also includes
Son 2, is provided with air gap 3 between the rotor 1 and stator 2.
The rotor 1 uses the non-structure of round rotor 1, and the air gap 3 for making motor is non-isometric, and the length of air gap 3 is change
's.According to motor magnetic circuit principle, in the case where main flux is certain：
Gas length increase → air gap magnetic difference of potential increase → total magnetic difference of potential increase → main magnetic conductance decline → Operating Point of Permanent Magnet
Decline → main flux decline → main magnetic conductance increase, reaches new equalization point, and totally apparently, the increase of the length of air gap 3 causes main flux
Decline, so as to cause counter electromotive force to decline again.
Using counter electromotive force as known quantity, the length of air gap 3 can be obtained, i.e. δ=f (E0), wherein, δ is gas length, E0
It is counter electromotive force.And counter electromotive force E0 formula are：
E0=Em*sin (θ), Em are counter electromotive force peak values, and θ is electrical angle.Because counter electromotive force E0 is sinusoidal cycles letter
Number, can derive that the length of air gap 3 is also mechanical periodicity.
We negate the emf curve a quarter cycle, i.e. θ=(0- pi/2s), the decile of (0- pi/2s) section 12, obtain 13
It is individual, the value of this 13 points is assigned to θ, obtains 13 different counter electromotive force E0.Again 13 are derived by the δ=f (E0)
Different δ values.These δ value points are connected into smooth curve and obtain the appearance and size of rotor 1, obtain shape such as Fig. 5 institutes of rotor 1
Show.
Shown by the result of experiment, back emf waveform be improved significantly, close to sine wave, as shown in fig. 6, and
Electromagnetic noise is measured in experiment reduces by 5 decibels, and efficiency improves 1.2%, and power factor brings up to 0.975 by original 0.94.
Thus, it can be known that the high rotating speed permanent-magnetic synchronous motor rotor of the utility model high density used for electric vehicle, is turned by improvement
The structure of son 1 is non-round rotor, and the air gap 3 for making motor is non-isometric, and the length of air gap 3 is change.So that counter electromotive force
Waveform be improved significantly, close to sine wave, so as to reduce electromagnetic noise, improve efficiency and power factor.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (2)
1. a kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle, located at the high rotating speed of high density used for electric vehicle forever
In magnetic-synchro motor, it is characterised in that：The permagnetic synchronous motor is additionally provided with stator, and gas is provided between the rotor and stator
Gap, the rotor are not rounded rotor structure, and the air gap is non-equidistant, and the length of the air gap is change, the air gap length
The calculation formula of degree is：
δ=f (E0), wherein, δ is gas length, and E0 is counter electromotive force；
The calculation formula of the counter electromotive force E0 is：
E0=Em*sin (θ), wherein, Em is counter electromotive force peak value, and θ is electrical angle；
The smooth curve that different δ values derived from δ=f (E0) connect into is rotor profile size.
2. the high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle according to claim 1, it is characterised in that：Institute
It is sinusoidal cycles function to state counter electromotive force E0, and it is in mechanical periodicity that the gas length, which is also,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400211.3U CN206759191U (en) | 2017-04-17 | 2017-04-17 | A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400211.3U CN206759191U (en) | 2017-04-17 | 2017-04-17 | A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759191U true CN206759191U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720400211.3U Active CN206759191U (en) | 2017-04-17 | 2017-04-17 | A kind of high rotating speed permanent-magnetic synchronous motor rotor of high density used for electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120767A (en) * | 2018-02-06 | 2019-08-13 | 本田技研工业株式会社 | Vehicle, dynamo-electric machine system and its manufacturing method equipped with dynamo-electric machine system |
-
2017
- 2017-04-17 CN CN201720400211.3U patent/CN206759191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120767A (en) * | 2018-02-06 | 2019-08-13 | 本田技研工业株式会社 | Vehicle, dynamo-electric machine system and its manufacturing method equipped with dynamo-electric machine system |
| CN110120767B (en) * | 2018-02-06 | 2022-12-16 | 本田技研工业株式会社 | Vehicle equipped with rotating electric machine system, and method for manufacturing rotating electric machine system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213100 No. 10, Xin Hu Road, Xue Yan Town, Wujin District, Changzhou, Jiangsu Patentee after: Jiangsu Jia Xuan intelligent industrial Polytron Technologies Inc Address before: 213100 No. 10, Xin Hu Road, Xue Yan Town, Wujin District, Changzhou, Jiangsu Patentee before: CHANGZHOU JIAXUAN CNC EQUIPMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213100 No. 502, Changting Road, West Taihu science and Technology Industrial Park, Wujin District, Changzhou City, Jiangsu Province Patentee after: JIANGSU JIAXUAN INTELLIGENT INDUSTRIAL TECHNOLOGY CO.,LTD. Address before: 213100 No. 10, Xin Hu Road, Xue Yan Town, Wujin District, Changzhou, Jiangsu Patentee before: JIANGSU JIAXUAN INTELLIGENT INDUSTRIAL TECHNOLOGY CO.,LTD. |
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| CP02 | Change in the address of a patent holder |