CN205725215U - The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile - Google Patents
The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile Download PDFInfo
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- CN205725215U CN205725215U CN201620541982.XU CN201620541982U CN205725215U CN 205725215 U CN205725215 U CN 205725215U CN 201620541982 U CN201620541982 U CN 201620541982U CN 205725215 U CN205725215 U CN 205725215U
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- magnetism groove
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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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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The low fluctuation built-in yi word pattern p-m rotor of a kind of motor in electric automobile, relates to technical field of motors, and solved is the technical problem reducing motor torque ripple.Multiple yi word pattern permanent magnetism groove is offered on this rotor, it is equipped with yi word pattern magnet steel in each yi word pattern permanent magnetism groove, each yi word pattern permanent magnetism groove is divided into A, B two class, and each A class permanent magnetism groove is alternately laid along the circumference of rotor with each B class permanent magnetism groove, and each A class permanent magnetism groove to be inserted radially into the degree of depth consistent, each B class permanent magnetism groove to be inserted radially into the degree of depth consistent, and A class permanent magnetism groove be inserted radially into the degree of depth more than B class permanent magnetism groove be inserted radially into the degree of depth, the degree of depth that is inserted radially into of yi word pattern permanent magnetism groove refers to the minimum spacing between yi word pattern permanent magnetism groove and rotor axis.The rotor that this utility model provides, is particularly well-suited to electric automobile and uses.
Description
Technical field
This utility model relates to motor technology, particularly relates to the built-in yi word pattern of low fluctuation of a kind of motor in electric automobile
The technology of p-m rotor.
Background technology
Electric automobile is to solve energy crisis and the important channel of environmental pollution.During driving motor for electric automobile governs
The research and development of state's electric automobile and industrialization process thereof.Especially it is being applicable to the high-effect internal permanent magnet synchronous motor of electric automobile
Aspect, also exists power density low, and high speed constant power bracket is narrow, torque fluctuations is big, overload capacity is low and the defect such as poor reliability,
It is difficult to meet requirement.Driving motor for electric automobile governs research and development and the industrialization process thereof of Electric Cars in China.
Cogging torque (also referred to as magnetic resistance moment) be automatization's occasion, electromechanical integration occasion governing system in fatal lack
Fall into.Existing reduction motor torque ripple method mainly have mark channel process, auxiliary channel process, assist tooth method, skewed slot method, oblique pole method,
Channel process of remaining silent and magnetization slot wedge method etc., these methods cut both ways, but are always difficult to effectively eliminate slot effect.Skewed slot or tiltedly pole
It is the method for the most frequently used reduction torque fluctuations, but skewed slot and oblique pole method have shadow to square wave motor gas-gap magnetic induction flat-top width
Ringing, skewed stator slot makes production technology and structure complicated simultaneously, makes stator slot area reduce, and reduction is exerted oneself, and makes copper loss increase, tiltedly
Groove and oblique pole both of which reduce exerts oneself, and makes the technique of motor and structure complicated, and motor manufacturing cost improves.
Utility model content
For defect present in above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of energy
Reduce the torque fluctuations that teeth groove causes, it is thus possible to reduce the low fluctuation built-in of the motor in electric automobile of mechanical vibration, noise
Font p-m rotor.
In order to solve above-mentioned technical problem, the low fluctuation of a kind of motor in electric automobile provided by the utility model is built-in
Yi word pattern p-m rotor, this rotor offers multiple yi word pattern permanent magnetism groove, is equipped with a word in each yi word pattern permanent magnetism groove
Type magnet steel, it is characterised in that:
Each yi word pattern permanent magnetism groove is divided into two classes, and a class therein is A class permanent magnetism groove, another kind of for B class permanent magnetism groove, and
And each A class permanent magnetism groove and each B class permanent magnetism groove alternately lay along the circumference of rotor, and the radial direction of each A class permanent magnetism groove is inserted
Enter the degree of depth consistent, each B class permanent magnetism groove to be inserted radially into the degree of depth consistent, the degree of depth that is inserted radially into of yi word pattern permanent magnetism groove refers to a word
Minimum spacing between type permanent magnetism groove and rotor axis；
If the degree of depth that is inserted radially into that the degree of depth is R1, B class permanent magnetism groove that is inserted radially into of A class permanent magnetism groove is R2, then there is R1 > R2.
Further, if the radius of rotor is R, then R1/R is between 0.75 to 0.8, and R2/R is between 0.5 to 0.55.
Further, in the radial section of rotor, it is right that each yi word pattern permanent magnetism groove is divided into by the field axis of rotor
The two halves claimed.
Further, in the radial section of rotor, the two ends of each yi word pattern permanent magnetism groove are both facing to rotor outer circle direction
Bending.
The low fluctuation built-in yi word pattern p-m rotor of the motor in electric automobile that this utility model provides, uses an adjacent word
The mode being inserted radially into the degree of depth not grade of type permanent magnetism groove obtains between stator iron core chute, the oblique pole of rotor permanent magnet magnetic pole or rotor
Use technique and the baroque effect same such as non-uniform gap, make d axle (field axis) and q axle (adjacent pole centrage)
Radial force tend to balance, can effectively eliminate slot effect, reduce the torque fluctuations that teeth groove causes, shake it is thus possible to reduce machinery
Dynamic, noise and back-emf harmonic wave, reduce core loss, it is achieved motor efficiently, high power density, high reliability, wide range speed control, low
Make an uproar, the feature such as low smooth fluctuations operation.
Accompanying drawing explanation
Fig. 1 is the low fluctuation built-in yi word pattern p-m rotor of the motor in electric automobile of this utility model first embodiment
Longitudinal section view；
Fig. 2 is the low fluctuation built-in yi word pattern p-m rotor of the motor in electric automobile of this utility model the second embodiment
Longitudinal section view；
Fig. 3 is the torque fluctuations song that existing rated output power is the built-in yi word pattern permagnetic synchronous motor of 46KW
Line chart, transverse axis θ therein is moment angle, and vertical pivot Tcog is moment；
Fig. 4 is the low fluctuation built-in yi word pattern permanent magnetism of the motor in electric automobile that have employed this utility model the second embodiment
The rated output power of rotor is the torque fluctuations curve chart of the motor of 46KW, and transverse axis θ therein is moment angle, vertical pivot Tcog
For moment.
Detailed description of the invention
Illustrate embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing, but the present embodiment need not
In limiting this utility model, every employing analog structure of the present utility model and similar change thereof, this utility model all should be listed in
Protection domain, the pause mark in this utility model all represents the relation of sum.
As it is shown in figure 1, the low fluctuation of a kind of motor in electric automobile that this utility model first embodiment is provided is built-in
Yi word pattern p-m rotor, this rotor 11 offers multiple yi word pattern permanent magnetism groove 12, is equipped with in each yi word pattern permanent magnetism groove
Yi word pattern magnet steel 13, it is characterised in that:
Each yi word pattern permanent magnetism groove 12 is divided into two classes, and a class therein is A class permanent magnetism groove, another kind of for B class permanent magnetism groove,
And each A class permanent magnetism groove is alternately laid along the circumference of rotor with each B class permanent magnetism groove, and the radial direction of each A class permanent magnetism groove
Insertion depth is consistent, each B class permanent magnetism groove to be inserted radially into the degree of depth consistent, the degree of depth that is inserted radially into of yi word pattern permanent magnetism groove refers to one
Minimum spacing between font permanent magnetism groove and rotor axis；
If the degree of depth that is inserted radially into that the degree of depth is R1, B class permanent magnetism groove that is inserted radially into of A class permanent magnetism groove is R2, then there is R1 > R2.
This utility model first embodiment is in the radial section of rotor 11, and each yi word pattern permanent magnetism groove 12 is by rotor
Field axis d is divided into the two halves of symmetry.
As in figure 2 it is shown, the low fluctuation of a kind of motor in electric automobile that this utility model the second embodiment is provided is built-in
Yi word pattern p-m rotor, this rotor 21 offers multiple yi word pattern permanent magnetism groove 22, is equipped with in each yi word pattern permanent magnetism groove
Yi word pattern magnet steel 23, it is characterised in that:
Each yi word pattern permanent magnetism groove 22 is divided into two classes, and a class therein is A class permanent magnetism groove, another kind of for B class permanent magnetism groove,
And each A class permanent magnetism groove is alternately laid along the circumference of rotor with each B class permanent magnetism groove, and the radial direction of each A class permanent magnetism groove
Insertion depth is consistent, each B class permanent magnetism groove to be inserted radially into the degree of depth consistent, the degree of depth that is inserted radially into of yi word pattern permanent magnetism groove refers to one
Minimum spacing between font permanent magnetism groove and rotor axis；
If the degree of depth that is inserted radially into that the degree of depth is R1, B class permanent magnetism groove that is inserted radially into of A class permanent magnetism groove is R2, then there is R1 > R2；
If the radius of rotor 21 is R, then R1/R is between 0.75 to 0.8, and R2/R is between 0.5 to 0.55.
This utility model the second embodiment is in the radial section of rotor 21, and each yi word pattern permanent magnetism groove 22 is by rotor
Field axis d is divided into the two halves of symmetry, and the two ends of each yi word pattern permanent magnetism groove 22 bend both facing to rotor outer circle direction.
In this utility model the second embodiment, first embodiment is compared closer to rotor periphery in yi word pattern permanent magnetism groove two ends,
Make the narrowed width between yi word pattern permanent magnetism groove end and rotor periphery, thus it is saturated to form magnetic circuit, leakage field can be reduced, improve
Power density and efficiency.
In this utility model first, second embodiment, adjacent yi word pattern permanent magnetism groove be inserted radially into the degree of depth, magnet steel
Getting over rotor rotor periphery (i.e. increasing R1 or R2), motor output torque is the biggest, but cogging torque and torque fluctuations also can
Increase therewith, therefore regulation A class permanent magnetism groove and the difference being inserted radially into degree of depth R1, R2 of B class permanent magnetism groove, and R1, R2 and rotor
The ratio of radius R, can effectively reduce motor noise and torque fluctuations.
This utility model first, second embodiment obtains and stator iron core chute, the oblique pole of rotor permanent magnet magnetic pole or fixed
Use the technique such as non-uniform gap and the same effect of baroque measure between rotor, reduce the change of air-gap permeance, from
And reduce the change of air-gap field energy storage when the rotor rotates, make d axle and q Axial and radial power tend to balance, weaken reluctance force
Critical defect in square (i.e. cogging torque) this drive system of electric automobile, it is suppressed that the torque fluctuations that teeth groove causes, can be notable
Reduce noise, mechanical vibration and stator core deformation during rotor high-speed cruising, be particularly significantly reduced back-emf harmonic wave and divide
Amount, can effectively reduce back-emf total harmonic distortion THD(Total Harmonic Distortion), beneficially motor frequently opens
Dynamic, efficiency, overload capacity and power density can be improved.
Fig. 3 is the torque fluctuations song that existing rated output power is the built-in yi word pattern permagnetic synchronous motor of 46KW
Line chart, transverse axis θ therein is moment angle, and vertical pivot Tcog is moment；
Fig. 4 is the low fluctuation built-in yi word pattern permanent magnetism of the motor in electric automobile that have employed this utility model the second embodiment
The rated output power of rotor is the torque fluctuations curve chart of the motor of 46KW, and transverse axis θ therein is moment angle, vertical pivot Tcog
For moment；
As shown in Figure 3, Figure 4, the low fluctuation of the motor in electric automobile that have employed this utility model the second embodiment is built-in
The motor of yi word pattern p-m rotor compares existing built-in yi word pattern permagnetic synchronous motor, output, electric current, efficiency and moment
Fluctuation all has clear improvement, and motor radial force tends to balance, and can reduce mechanical vibration, when being significantly reduced rotor at a high speed fortune from
Mental and physical efforts, beneficially motor frequent starting, improve overload capacity, be effectively improved the combination property of motor, can meet electric automobile and drive
Dynamic requirement, it is achieved the features such as the fluctuation of high power density, low noise, Low-torque, wide range speed control miniaturization and even running.
Claims (4)
1. a low fluctuation built-in yi word pattern p-m rotor for motor in electric automobile, this rotor offers multiple yi word pattern forever
Magnetic groove, is equipped with yi word pattern magnet steel in each yi word pattern permanent magnetism groove, it is characterised in that:
Each yi word pattern permanent magnetism groove is divided into two classes, and a class therein is A class permanent magnetism groove, another kind of for B class permanent magnetism groove, and respectively
Individual A class permanent magnetism groove and each B class permanent magnetism groove are alternately laid along the circumference of rotor, and each A class permanent magnetism groove be inserted radially into deep
Degree is consistent, each B class permanent magnetism groove to be inserted radially into the degree of depth consistent, the degree of depth that is inserted radially into of yi word pattern permanent magnetism groove refers to that yi word pattern is forever
Minimum spacing between magnetic groove and rotor axis；
If the degree of depth that is inserted radially into that the degree of depth is R1, B class permanent magnetism groove that is inserted radially into of A class permanent magnetism groove is R2, then there is R1 > R2.
The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile the most according to claim 1, it is characterised in that:
If the radius of rotor is R, then R1/R is between 0.75 to 0.8, and R2/R is between 0.5 to 0.55.
The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile the most according to claim 1, it is characterised in that:
In the radial section of rotor, each yi word pattern permanent magnetism groove is divided into the two halves of symmetry by the field axis of rotor.
The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile the most according to claim 3, it is characterised in that:
In the radial section of rotor, the two ends of each yi word pattern permanent magnetism groove bend both facing to rotor outer circle direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541982.XU CN205725215U (en) | 2016-06-06 | 2016-06-06 | The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541982.XU CN205725215U (en) | 2016-06-06 | 2016-06-06 | The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN205725215U true CN205725215U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620541982.XU Active CN205725215U (en) | 2016-06-06 | 2016-06-06 | The low fluctuation built-in yi word pattern p-m rotor of motor in electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871098A (en) * | 2016-06-06 | 2016-08-17 | 上海特波电机有限公司 | Low-fluctuation asymmetric type permanent magnetic rotor for electric vehicle motor |
-
2016
- 2016-06-06 CN CN201620541982.XU patent/CN205725215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871098A (en) * | 2016-06-06 | 2016-08-17 | 上海特波电机有限公司 | Low-fluctuation asymmetric type permanent magnetic rotor for electric vehicle motor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |