CN108711979A - A kind of rotor structure of embedded permanent magnet synchronous motor - Google Patents
A kind of rotor structure of embedded permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN108711979A CN108711979A CN201810769170.4A CN201810769170A CN108711979A CN 108711979 A CN108711979 A CN 108711979A CN 201810769170 A CN201810769170 A CN 201810769170A CN 108711979 A CN108711979 A CN 108711979A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnet synchronous
- synchronous motor
- magnetic pole
- pole piece
- Prior art date
- 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
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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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- 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 discloses a kind of rotor structure of embedded permanent magnet synchronous motor, including rotor body, the periphery of rotor body is evenly provided with the identical magnetic pole piece of multiple structures；Magnetic pole piece is in arc-shaped, and the center of circle of magnetic pole piece and the center of circle of rotor body are misaligned, so that permanent magnet synchronous motor air gap is not wait air gaps；The junction of two neighboring magnetic pole piece is straight line；The crown height of the straight line of the junction of two neighboring magnetic pole piece is 2-4 times of permanent magnet synchronous motor air gap.The rotor structure of the embedded permanent magnet synchronous motor of the present invention, it is not wait air gaps that can make permanent magnet synchronous motor air gap so that magnetic potential of air gap waveform may be implemented very close to sine wave, to substantially improve the performance of motor in permanent magnet synchronous motor of the invention.
Description
Technical field
The present invention relates to technical field of motors, and in particular to a kind of rotor structure of embedded permanent magnet synchronous motor.
Background technology
Mostly it is even air gap currently, traditional embedded permanent magnet synchronous motor, that is, the outer diameter profile of rotor is
One full circle, and be concentric circles with the inner circle of stator, referring to Figure of description 1；Also there is embedded magneto in the prior art
Rotor pit 20 is opened up between magnetic pole every magnetic, be non-uniform air-gap, referring to Figure of description 2；Both the above rotor knot
The mmf wave of the air-gap field of structure is unable to reach sinusoidal waveform, and there are many harmonic waves, motor performance can be caused to be deteriorated, such as motor
It is lost that big efficiency is low, noise is bigger than normal.
Invention content
In order to overcome the rotor structure of existing embedded permanent magnet synchronous motor motor can be made to there is technical issues that,
The present invention provides a kind of rotor structure of embedded permanent magnet synchronous motor, can weaken the harmonic wave of magnetic potential of air gap, improve motor
Performance.
To achieve the above object, the rotor structure of a kind of embedded permanent magnet synchronous motor provided by the present invention, including turn
The periphery of sub- ontology, the rotor body is evenly provided with the identical magnetic pole piece of multiple structures；The magnetic pole piece is in arc-shaped, and
The center of circle of the magnetic pole piece and the center of circle of the rotor body are misaligned, so that the permanent magnet synchronous motor air gap is not wait gas
Gap；The junction of the two neighboring magnetic pole piece is straight line；
The crown height of the straight line of the junction of the two neighboring magnetic pole piece is 2-4 times of the permanent magnet synchronous motor air gap.
In the rotor structure of above-mentioned embedded permanent magnet synchronous motor, the quantity of the magnetic pole piece is 6-12.
In the rotor structure of above-mentioned embedded permanent magnet synchronous motor, the quantity of the magnetic pole piece is 8-10.
The present invention has the advantages that compared with prior art：
Due to the periphery of rotor body be evenly provided with multiple structures it is identical and in arc-shaped magnetic pole piece, the circle of magnetic pole piece
The center of circle of the heart and rotor body is misaligned, and the junction of two neighboring magnetic pole piece is straight line, the junction of two neighboring magnetic pole piece
The crown height of straight line be 2-4 times of permanent magnet synchronous motor air gap, it is not grade air gaps that can make permanent magnet synchronous motor air gap in this way,
So that magnetic potential of air gap waveform may be implemented very close to sine wave, to substantially improve motor in the permanent magnet synchronous motor of the present invention
Performance.
Description of the drawings
Fig. 1 is a kind of rotor structure schematic diagram of embedded permanent magnet synchronous motor in the prior art；
Fig. 2 is the rotor structure schematic diagram of the embedded permanent magnet synchronous motor of another kind in the prior art；
Fig. 3 is the structural schematic diagram of the rotor structure of the embedded permanent magnet synchronous motor of the embodiment of the present invention.
Wherein, 1, magnetic pole piece；2, junction；20, pit.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
As shown in figure 3, a kind of rotor structure of embedded permanent magnet synchronous motor provided by the present invention, including rotor sheet
Body, the periphery of rotor body are evenly provided with the identical magnetic pole piece of multiple structures 1；Magnetic pole piece 1 is in arc-shaped, and magnetic pole piece 1
The center of circle and the center of circle of rotor body are misaligned, so that permanent magnet synchronous motor air gap is not wait air gaps；The company of two neighboring magnetic pole piece 1
It is straight line to meet place 2；
The crown height of the straight line of the junction 2 of two neighboring magnetic pole piece 1 is 2-4 times of permanent magnet synchronous motor air gap；By suitable
When the positions (being in the magnetic pole piece 1 of arc-shaped) of the not equal air gaps of selection, the air gaps amount such as not, the harmonic wave of magnetic potential of air gap can be weakened,
Improve the performance of motor.
Preferably, the quantity of magnetic pole piece 1 is 6-12.
Preferably, the quantity of magnetic pole piece 1 is 8-10.
To sum up, the present invention has the advantages that compared with prior art：
Due to the periphery of rotor body be evenly provided with multiple structures it is identical and in arc-shaped magnetic pole piece 1, magnetic pole piece 1
The center of circle and the center of circle of rotor body are misaligned, and the junction 2 of two neighboring magnetic pole piece 1 is straight line, the company of two neighboring magnetic pole piece 1
The crown height for connecing the straight line at place 2 is 2-4 times of permanent magnet synchronous motor air gap, and it is to differ that can make permanent magnet synchronous motor air gap in this way
Air gap so that magnetic potential of air gap waveform may be implemented very close to sine wave, to substantially improve in permanent magnet synchronous motor of the invention
The performance of motor.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace and also answer
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of rotor structure of embedded permanent magnet synchronous motor, which is characterized in that including rotor body, the rotor body
Periphery is evenly provided with the identical magnetic pole piece of multiple structures；The magnetic pole piece is in arc-shaped, and the center of circle of the magnetic pole piece and institute
The center of circle for stating rotor body is misaligned, so that the permanent magnet synchronous motor air gap is not wait air gaps；The two neighboring magnetic pole piece
Junction be straight line；
The crown height of the straight line of the junction of the two neighboring magnetic pole piece is 2-4 times of the permanent magnet synchronous motor air gap.
2. the rotor structure of embedded permanent magnet synchronous motor as described in claim 1, which is characterized in that the number of the magnetic pole piece
Amount is 6-12.
3. the rotor structure of embedded permanent magnet synchronous motor as claimed in claim 2, which is characterized in that the number of the magnetic pole piece
Amount is 8-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769170.4A CN108711979A (en) | 2018-07-13 | 2018-07-13 | A kind of rotor structure of embedded permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769170.4A CN108711979A (en) | 2018-07-13 | 2018-07-13 | A kind of rotor structure of embedded permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108711979A true CN108711979A (en) | 2018-10-26 |
Family
ID=63875040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810769170.4A Pending CN108711979A (en) | 2018-07-13 | 2018-07-13 | A kind of rotor structure of embedded permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108711979A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005219A (en) * | 2006-11-22 | 2007-07-25 | 北京世纪乐华技术有限公司 | Permanent magnet synchronous motor |
| CN101247055A (en) * | 2008-02-23 | 2008-08-20 | 广东美芝制冷设备有限公司 | Low-fluctuation rare earth permanent magnetic brushless motor |
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN202276209U (en) * | 2010-11-04 | 2012-06-13 | 北京瑞亚宝科技发展有限公司 | Permanent magnet rotor employing built-in magnetic steel non-uniform air gap structure |
| CN105896867A (en) * | 2016-05-31 | 2016-08-24 | 德州杰诺新能源有限公司 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
| CN206023399U (en) * | 2016-08-04 | 2017-03-15 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of IPM rotors of PMSM motors |
-
2018
- 2018-07-13 CN CN201810769170.4A patent/CN108711979A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005219A (en) * | 2006-11-22 | 2007-07-25 | 北京世纪乐华技术有限公司 | Permanent magnet synchronous motor |
| CN101247055A (en) * | 2008-02-23 | 2008-08-20 | 广东美芝制冷设备有限公司 | Low-fluctuation rare earth permanent magnetic brushless motor |
| CN202276209U (en) * | 2010-11-04 | 2012-06-13 | 北京瑞亚宝科技发展有限公司 | Permanent magnet rotor employing built-in magnetic steel non-uniform air gap structure |
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN105896867A (en) * | 2016-05-31 | 2016-08-24 | 德州杰诺新能源有限公司 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
| CN206023399U (en) * | 2016-08-04 | 2017-03-15 | 日本电产凯宇汽车电器（江苏）有限公司 | A kind of IPM rotors of PMSM motors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181026 |
|
| RJ01 | Rejection of invention patent application after publication |