CN110504772A - A kind of built-in permanent magnet motor rotor punching - Google Patents
A kind of built-in permanent magnet motor rotor punching Download PDFInfo
- Publication number
- CN110504772A CN110504772A CN201910742826.8A CN201910742826A CN110504772A CN 110504772 A CN110504772 A CN 110504772A CN 201910742826 A CN201910742826 A CN 201910742826A CN 110504772 A CN110504772 A CN 110504772A
- Authority
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- China
- Prior art keywords
- permanent magnet
- punching
- circle
- main body
- center
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004080 punching Methods 0.000 title claims abstract description 45
- 230000005389 magnetism Effects 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention belongs to technical field of motors, provide a kind of built-in permanent magnet motor rotor punching, it include: punching main body, its peripheral region is arranged at intervals with eccentric cambered and boss, the boss is disposed with the first inclined-plane, concentric cambered surface and the second inclined-plane, the center of circle of the concentric cambered surface is identical as the center of circle of the punching main body, and the center of circle of the eccentric cambered is located in the punching main body and different from the punching main body center of circle.Compared with prior art, the present invention has the advantages that 1, reduction average airgap length, enhance air gap flux density, improves performance, improve air-gap field waveform, enable motor high power, low smooth fluctuations operation takes into account the design of rotor punching full circle and pure eccentric the advantages of designing 2, increases convex grey subset, and then increases reluctance torque, weak magnetism speed expansion ability is improved, the torque density and torque value of motor are increased；3, enhance rotor mechanical strength, improve high-speed cruising reliability, and extend the punching service life.
Description
Technical field
The invention belongs to technical field of motors, and in particular to a kind of built-in permanent magnet motor rotor punching.
Background technique
Traditional built-in permanent magnet motor rotor punching frequently with the design that rotor outer circle is full circle or is simple inclined
The design of heart circle, when full circle designs, motor gas-gap is uniform, although whole specific magnetic loading is high, the problem of bringing is
Air gap flux density harmonic content is big, and harmonic torque is big, and when simple bias center circular design, the air gap of motor is in Sine distribution, although gas
Gap magnetic flux density waveforms are more sinusoidal, and flux density harmonic wave and torque harmonic content are greatly reduced, but since average airgap increase is more obvious,
Whole average flux density is lower, the problem for bringing motor ensemble average torque drop obvious.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the status of the prior art, and provide a kind of interior permanent magnet machines
Rotor punching.
The technical scheme of the invention to solve the technical problem is: proposing a kind of built-in permanent magnet motor rotor punching
Piece, comprising: punching main body, peripheral region are arranged at intervals with eccentric cambered and boss, and the boss is disposed with
One inclined-plane, concentric cambered surface and the second inclined-plane, the center of circle of the concentric cambered surface is identical as the center of circle of the punching main body, described inclined
The center of circle of heart cambered surface is located in the punching main body and different from the punching main body center of circle.
In a kind of above-mentioned built-in permanent magnet motor rotor punching, several groups permanent magnet is provided in the punching main body
Put body, it includes two permanent magnet troughs that each permanent magnet, which puts body, V-shaped setting between two permanent magnet troughs,
It is provided between two permanent magnet troughs every magnetic gap.
In a kind of above-mentioned built-in permanent magnet motor rotor punching, have between first inclined-plane and second inclined-plane
There is angle α, there is angle β between two permanent magnet troughs, it is described to be spent in angle α=angle β+(5~10).
In a kind of above-mentioned built-in permanent magnet motor rotor punching, between first inclined-plane and second inclined-plane
Angle α is between 80 degree to 120 degree.
In a kind of above-mentioned built-in permanent magnet motor rotor punching, auxiliary tank is offered on the eccentric cambered.
Compared with the prior art, the advantages of the present invention are as follows: 1, reduce average airgap length, enhance air gap flux density, improves
Performance improves air-gap field waveform, enables motor high power, low smooth fluctuations operation, take into account the design of rotor punching full circle and
The advantages of pure eccentric design；
2, increase convex grey subset, and then increase reluctance torque, improve weak magnetism speed expansion ability, increase the torque density of motor and turn
Square value；
3, enhance rotor mechanical strength, improve high-speed cruising reliability, and extend the punching service life.
Detailed description of the invention
Fig. 1 is the plan view of this built-in permanent magnet motor rotor punching；
Fig. 2 is enlarged drawing at A in Fig. 1；
In figure, punching main body 1, eccentric cambered 2, the first inclined-plane 3, concentric cambered surface 4, the second inclined-plane 5, permanent magnet trough 6, every magnetic
Gap 7, auxiliary tank 8.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As depicted in figs. 1 and 2, this built-in permanent magnet motor rotor punching, comprising: punching main body 1, peripheral region interval are set
It is equipped with eccentric cambered 2 and boss, boss is disposed with the first inclined-plane 3, concentric cambered surface 4 and the second inclined-plane 5, concentric cambered surface
4 center of circle is identical as the center of circle of punching main body 1, the center of circle of eccentric cambered 2 be located in punching main body 1 and with 1 center of circle of punching main body
It is different.
The center of circle R of eccentric cambered 2 is different from 1 center of circle of punching main body and eccentricity is a, improves the sine degree of air-gap field,
Air gap flux density is improved, reduces torque ripple, improves the stationarity of motor operation, when design generally makes maximum air gap gmax/ minimum
Air gap gmin=2~3.
Boss is arranged in rotor punching outer circle at motor quadrature axis magnetic circuit, improves the convex grey subset of motor, greatly improves weak magnetic expansion
Fast ability improves power density, and when design generally makes the convex grey subset of motor in Lq/Ld=2.8~3 or so.
In this application, d axis (Ld) uses off-centre operation and q axis (Lq) to use concentric circles in magneto, takes into account average magnetic
Close and harmonic flux density reduces average airgap length, enhances air gap flux density, improves performance, and can be realized between torque and flux density
Balance.
If being provided with group permanent magnet in punching main body 1 puts body, buying a permanent magnet and putting body includes two permanent magnet troughs
6, V-shaped setting between two permanent magnet troughs 6 is provided with every magnetic gap 7 between two permanent magnet troughs 6.
Permanent magnet trough 6 forms V-arrangement permanent magnet and puts body, In for placing one or more permanent magnet, two permanent magnet troughs 6
Permanent magnet puts intracorporal two or more pieces of permanent magnet and forms a permanent magnetism magnetic pole.
It can be improved the mechanical strength of punching every magnetic gap 7, reduce mechanical stress, reduce average airgap, and be conducive to out
The craftsmanship of mold when mould improves die life.
There is angle α between first inclined-plane 3 and the second inclined-plane 5, there is angle β between two permanent magnet troughs 6, in angle α
=angle β+(5~10) degree.
In actual use, angle α changes with angle β size, specifically between the first inclined-plane 3 and the second inclined-plane 5
Angle α should be between 80 degree to 120 degree.
Auxiliary tank 8 is offered on eccentric cambered 2, auxiliary tank 8 can reduce torque by eliminating the harmonic wave of air gap flux density
Fluctuation, harmonic wave, which reduces and then rotates fluctuation, to become smaller, and realizes the purpose of smooth rotation.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
Generation, defined range that however, it does not deviate from the spirit of the invention.
Claims (5)
1. a kind of built-in permanent magnet motor rotor punching, which is characterized in that including punching main body, peripheral region is arranged at intervals with partially
Heart cambered surface and boss, the boss are disposed with the first inclined-plane, concentric cambered surface and the second inclined-plane, the concentric arc
The center of circle in face is identical as the center of circle of the punching main body, and the center of circle of the eccentric cambered is located in the punching main body and and punching
The main body center of circle is different.
2. a kind of built-in permanent magnet motor rotor punching according to claim 1, which is characterized in that in the punching main body
It is provided with several groups permanent magnet and puts body, it includes two permanent magnet troughs, two permanent magnetism that each permanent magnet, which puts body,
V-shaped setting between body slot is provided with every magnetic gap between two permanent magnet troughs.
3. a kind of built-in permanent magnet motor rotor punching according to claim 2, which is characterized in that first inclined-plane with
There is angle α between second inclined-plane, there is angle β between two permanent magnet troughs, it is described in angle α=angle β+(5
~10) it spends.
4. a kind of built-in permanent magnet motor rotor punching according to claim 3, which is characterized in that first inclined-plane with
Angle α between second inclined-plane is between 80 degree to 120 degree.
5. a kind of built-in permanent magnet motor rotor punching according to claim 1, which is characterized in that on the eccentric cambered
Offer auxiliary tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742826.8A CN110504772A (en) | 2019-08-13 | 2019-08-13 | A kind of built-in permanent magnet motor rotor punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742826.8A CN110504772A (en) | 2019-08-13 | 2019-08-13 | A kind of built-in permanent magnet motor rotor punching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110504772A true CN110504772A (en) | 2019-11-26 |
Family
ID=68586424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910742826.8A Pending CN110504772A (en) | 2019-08-13 | 2019-08-13 | A kind of built-in permanent magnet motor rotor punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110504772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181278A (en) * | 2020-03-03 | 2020-05-19 | 奇瑞安川电驱动系统有限公司 | Permanent magnet synchronous motor rotor structure for new energy automobile and processing method thereof |
| WO2021027243A1 (en) * | 2019-08-13 | 2021-02-18 | 宁波安信数控技术有限公司 | Built-in permanent magnet electric motor rotor punching sheet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050200223A1 (en) * | 2004-03-10 | 2005-09-15 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electric car using the same |
| CN205070634U (en) * | 2015-11-06 | 2016-03-02 | 湘电莱特电气有限公司 | PMSM rotor structure for electric automobile |
| CN108011487A (en) * | 2018-01-31 | 2018-05-08 | 株洲罗伯特电机有限公司 | A kind of kart internal permanent magnet synchronous motor |
| CN108233574A (en) * | 2018-02-13 | 2018-06-29 | 安徽明腾永磁机电设备有限公司 | Rotor and permasyn morot |
| CN108462263A (en) * | 2018-03-29 | 2018-08-28 | 广东美芝制冷设备有限公司 | Motor, compressor and refrigeration equipment |
| CN108711977A (en) * | 2018-06-25 | 2018-10-26 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
| CN210404866U (en) * | 2019-08-13 | 2020-04-24 | 宁波安信数控技术有限公司 | Built-in permanent magnet motor rotor punching sheet |
-
2019
- 2019-08-13 CN CN201910742826.8A patent/CN110504772A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050200223A1 (en) * | 2004-03-10 | 2005-09-15 | Hitachi, Ltd. | Permanent magnet rotating electric machine and electric car using the same |
| CN205070634U (en) * | 2015-11-06 | 2016-03-02 | 湘电莱特电气有限公司 | PMSM rotor structure for electric automobile |
| CN108011487A (en) * | 2018-01-31 | 2018-05-08 | 株洲罗伯特电机有限公司 | A kind of kart internal permanent magnet synchronous motor |
| CN108233574A (en) * | 2018-02-13 | 2018-06-29 | 安徽明腾永磁机电设备有限公司 | Rotor and permasyn morot |
| CN108462263A (en) * | 2018-03-29 | 2018-08-28 | 广东美芝制冷设备有限公司 | Motor, compressor and refrigeration equipment |
| CN108711977A (en) * | 2018-06-25 | 2018-10-26 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
| CN210404866U (en) * | 2019-08-13 | 2020-04-24 | 宁波安信数控技术有限公司 | Built-in permanent magnet motor rotor punching sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021027243A1 (en) * | 2019-08-13 | 2021-02-18 | 宁波安信数控技术有限公司 | Built-in permanent magnet electric motor rotor punching sheet |
| CN111181278A (en) * | 2020-03-03 | 2020-05-19 | 奇瑞安川电驱动系统有限公司 | Permanent magnet synchronous motor rotor structure for new energy automobile and processing method thereof |
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