CN108322004A - A kind of lightweight permanent magnet synchronous motor with high-power density - Google Patents
A kind of lightweight permanent magnet synchronous motor with high-power density Download PDFInfo
- Publication number
- CN108322004A CN108322004A CN201810161551.4A CN201810161551A CN108322004A CN 108322004 A CN108322004 A CN 108322004A CN 201810161551 A CN201810161551 A CN 201810161551A CN 108322004 A CN108322004 A CN 108322004A
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- CN
- China
- Prior art keywords
- lightweight
- rotor
- motor
- stator
- permanent magnet
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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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
Abstract
The invention discloses a kind of lightweight permanent magnet synchronous motor with high-power density, which includes lightweight stator (1) and lightweight rotor (2)；Wherein, it is provided with semi-circular groove (3) in the stator yoke (1.3) of lightweight stator (1), it is provided with irregular slot (5) in the rotor yoke (2.1) of lightweight rotor (2), the lightweight structure taken can be under the premise of not influencing motor electromagnetic performance, effectively reduce motor quality, hoisting power density.The present invention is not under the premise of influencing motor electromagnetic characteristic, irregular slot (5) is opened by stator (1) open semicircle shape slot (3) and rotor (2), the effective lightweight for realizing motor stator (1) and rotor (2), improve the power density of motor, rotor (2), which opens irregular slot (5), can increase cooling air flow velocity in rotor (2), air velocity can effectively take away greatly the internal heat of rotor (2) iron core, it is more advantageous to and improves motor electromagnetic load, promote the power density of motor, connection iron core (2.3) can effectively connect adjacent rotor yoke (2.1), improve the mechanical strength of motor.
Description
Fields
The present invention relates to a kind of magneto technologies, belong to high power density motor technical field.
Background technology
High power density motor have the characteristics that it is small, light-weight and efficient, be widely used in aerospace,
The particular applications such as submarine.Compared to induction machine and switched reluctance machines, permanent magnet synchronous motor is big with power density, imitates
The high intrinsic advantages of rate, and have benefited from the development of SmCo high temperature resistant permanent-magnet material and high-performance soft-magnetic composite material, permanent magnetism is same
The reliability and power density for walking motor have larger promotion.
The main path that power of motor density is promoted：First, increasing output power of motor, another is exactly to ensure motor
In the case of output power, reduce motor size as far as possible, reduces motor quality.
For increasing the measure of output power, generally take higher electric load and magnetic loading, higher electric load that can lead
Send a telegraph that machine copper loss is larger, larger magnetic loading can cause motor iron loss larger, and it is the heat source for generating Wen Sheng to be lost, in order to
Reduce motor temperature rise, it is necessary to take certain cooling provision, as the water of Toyota Prius motor (2010), ethylene glycol are indirectly cooling,
The oil cooling of the axial-flux electric machine of YASA companies, these cooling provisions all can additionally increase electric system total quality, be unfavorable for
The raising of power of motor density, and the particular applications such as aviation usually require that motor is nature due to the use of the limitation in space
Ventilating and cooling is axial single-ended from fan cooling, forces cooling provision not applicable, and requirement of the aerospace applications to power of motor density
Often higher, therefore, there are contradictions for the raising of motor radiating and output power of motor；Measure for reduction motor size, one
As by the higher of Rated motor Design of Rotation, but high-speed cruising can cause motor frequency of supply to improve, and iron loss accordingly increases, this
Outside, the motor of high-speed cruising has higher requirement to rotor mechanical strength.
Invention content
Technical problem：Technical problem to be solved by the invention is to provide a kind of lightweight high-power density permanent magnetics to synchronize electricity
Machine solves the problems, such as that the power density of conventional permanent magnet motor is difficult to be promoted.
Technical solution：In order to solve the above technical problems, a kind of lightweight permanent magnet synchronous motor with high-power density of the present invention
The technical solution adopted is that using lightweight stator and lightweight rotor；Wherein, it is provided with semicircle in the stator yoke of lightweight stator
Shape slot (3) is provided with irregular slot in the rotor yoke of lightweight rotor, and the lightweight structure taken can not influence motor electromagnetic
Under the premise of performance, motor quality, hoisting power density are effectively reduced.
The lightweight stator is located at lightweight rotor exterior, lightweight stator include armature winding, armature core tooth,
Stator yoke and semi-closed port peariform slot, semi-closed port peariform slot are located in the circumference of lightweight stator, and armature winding is positioned over semi-closed port
It in peariform slot, is concentrically wound around on armature core tooth, armature core tooth is arranged between stator yoke and rotor, adjacent semi-closed port pears
Open semicircle shape slot, semi-circular groove are uniformly distributed along stator circumference in stator yoke between shape slot.
The lightweight rotor includes rotor yoke, permanent magnet and connection iron core, is provided with irregular slot on rotor yoke, does not advise
Then slot is uniformly distributed along rotor circumference.
The permanent magnet is surface-mount type samarium cobalt permanent magnet body, which is close to rotor yoke outer surface, between having with stator tooth
Gap is circumferentially uniformly distributed, and takes radial magnetizing mode, adjacent permanent magnet magnetizing direction opposite.
The rotor yoke is set to by connecting iron core connection, connection iron core between adjacent rotor yoke.
Advantageous effect：
1, this motor is slotted by lightweight and is designed, and under the premise of not influencing motor electromagnetic characteristic, effectively reduces
Motor quality improves the power density of motor；
2, the rotor of this motor opens irregular slot design, can not only reduce motor quality, can also improve rotor
The flow velocity of internal cooling air effectively takes away the heat generated in motor operation course, promotes the reliability of motor operation；
3, the connection Core Design that this motor is taken, can improve the mechanical strength of rotor, effectively prevent motor high speed and transport
The disadvantage of mechanical strength deficiency when row provides preferable basis for the raising of rotating speed, and the raising of rotating speed can further promote motor
Power density.
Description of the drawings
Fig. 1 is the sectional view of the motor of the present invention.
Have in figure：Lightweight stator 1, lightweight rotor 2, semi-circular groove 3, semi-closed port peariform slot 4, irregular slot 5.
Lightweight stator 1 includes：Armature winding 1.1, stator tooth 1.2, stator yoke 1.3.
Lightweight rotor 2 includes：Rotor yoke 2.1, permanent magnet 2.2, connection iron core 2.3.
Specific implementation mode
The lightweight permanent magnet synchronous motor with high-power density of the present invention is synchronized using the internal rotor durface mounted permanent magnet of 6 slot, 8 pole
Motor is compared to traditional magneto difference：Stator takes open semicircle shape slot lightweight structure, rotor takes
Open irregular slot lightweight structure.The lightweight structure taken be meet the shaped grooved premise for not influencing motor electromagnetic characteristic
Lower progress, stator, the rotor lightweight structure taken can effectively mitigate motor quality, promote power of motor density, opened
The irregular slot of rotor can not only effectively mitigate motor quality, and can improve the cooling air flow velocity inside rotor, have
Conducive to motor radiating, the reliability of motor operation is promoted, connects the machine of rotor when the design of iron core ensure that high speed operation of motor
Tool intensity is conducive to the promotion of power of motor density.
The lightweight permanent magnet synchronous motor with high-power density includes lightweight stator 1 and lightweight rotor 2, lightweight
1 light weight of stator turns to 1.3 open semicircle shape slot 3 of stator yoke, and 2 light weight of lightweight rotor turns to rotor yoke 2.1 and opens irregular slot 5, adopts
The lightweight structure taken can effectively reduce motor quality under the premise of not influencing motor electromagnetic performance；The lightweight
Stator 1 is located at outside lightweight rotor 2, including armature winding 1.1, armature core tooth 1.2 and stator yoke 1.3, armature winding 1.1
It is positioned in semi-closed port peariform slot 4, is concentrically wound around on armature core tooth 1.2, armature core tooth 1.2 is arranged in stator yoke 1.3
Between lightweight rotor 2, the 1.3 open semicircle shape slot 3 of stator yoke between adjacent semi-closed port peariform slot 4, semi-circular groove 3 is along light weight
Change the distribution of 1 even circumferential of stator；The lightweight rotor 2 includes rotor yoke 2.1, durface mounted permanent magnet body 2.2 and connection iron core
2.3, rotor yoke 2.1 opens irregular slot 5, and irregular slot 5 is distributed along 2 even circumferential of lightweight rotor；The permanent magnet 2.2 is
Surface-mount type samarium cobalt permanent magnet body 2.2, is placed between rotor yoke 2.1 and stator tooth 1.2, and permanent magnet 2.2 is close to 2.1 appearance of rotor yoke
There is gap in face with stator tooth 1.2, is circumferentially uniformly distributed, permanent magnet 2.2 takes radial magnetizing mode, adjacent permanent magnet 2.2 to magnetize
Direction is opposite；The rotor yoke 2.1 is connected by connecting iron core 2.3, and connection iron core 2.3 is set between adjacent rotor yoke 2.1.
A kind of operation logic of lightweight permanent magnet synchronous motor with high-power density disclosed by the invention is as follows：
Permanent magnet generates Active spurring magnetic field, and permanent magnet flux enters stator armature core tooth by permanent magnet north poles, wears
Stator back yoke is crossed, the South Pole of rotor permanent magnet is reached, forms the magnetic field of closure, with the rotation of rotor, the magnetic field is in space shape
At the rotating excitation field of closure；Meanwhile stator winding is passed through three-phase alternating current identical with rotor rotation electric frequency, by the electricity of alternation
Magnetic field is generated, although stator is motionless, sinusoidal variations and permanent magnet generate at any time for armature field that stator winding generates
Field synchronous is rotationally-varying, and energy converting between mechanical is realized in the rotating excitation field interaction that such rotor is formed.Opened stator half
Round lightweight slot and the irregular lightweight slot of rotor do not influence the electromagnetic property of motor, ensure that under identical service condition,
Take the power and do not take the motor of lightweight structure almost the same that the motor of lightweight structure generates, and lightweight structure
Motor quality has obtained effective reduction, is equivalent to power density and is improved, and on the other hand, lightweight is taken irregularly to turn
Pilot trench, can promote the flow velocity of rotor internal cooling air in motor operation course, effectively take away in motor operation course and produce
Raw inside heat, improves the reliability of motor operation.
The principle of stator open semicircle shape slot：Magnetic Induction Density Distribution on rotor is relatively quiet with the rotary motion of rotor
Only, i.e. the resultant magnetic field of permanent magnetic field and armature field is substantially immovable on rotor, therefore, on rotor
The region that magnetic field intensity is zero or rotor core is not fully utilized can slot without the output torque for influencing motor；But it is fixed
Son is static, and with the movement of rotor, the Distribution of Magnetic Field on stator is rotationally-varying at any time, if somewhere trepanning, meeting
The trend of the magnetic line of force is influenced, and then to magnetic fields, but 6 slot, the 8 pole structure design of the present invention, in adjacent semi-closed port pyriform
The iron core at stator yoke between slot just in the whole service period all in not utilizing or state of the flux density close to zero, this
It means that and fluting design is carried out to the part, the motor magnetic line of force will not be impacted, meanwhile, to the magnetic induction intensity of motor
Distribution will not impact, and the design can mitigate motor quality, effectively promote the power density of motor.
The 1.3 open semicircle shape slot 3 of stator yoke, rotor yoke 2.1 open irregular slot 5, may also set up square groove or other
Polygon groove, on condition that ensureing that motor electromagnetic characteristic is unaffected, the above is only a preferred embodiment of the present invention.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of lightweight permanent magnet synchronous motor with high-power density, characterized in that the motor includes lightweight stator (1) and light weight
Change rotor (2)；Wherein, semi-circular groove (3) is provided in the stator yoke (1.3) of lightweight stator (1), lightweight rotor (2) turns
Be provided with irregular slot (5) in sub- yoke (2.1), the lightweight structure taken can under the premise of not influencing motor electromagnetic performance,
Effectively reduce motor quality, hoisting power density.
2. requiring the lightweight permanent magnet synchronous motor with high-power density according to right 1, characterized in that the lightweight is fixed
Sub (1) is located at lightweight rotor (2) outside, and lightweight stator (1) includes armature winding (1.1), armature core tooth (1.2), determines
Sub- yoke (1.3) and semi-closed port peariform slot (4), semi-closed port peariform slot (4) are located in the circumference of lightweight stator (1), armature winding
(1.1) it is positioned in semi-closed port peariform slot (4), is concentrically wound around on armature core tooth (1.2), armature core tooth (1.2) setting
Between stator yoke (1.3) and rotor (2), open semicircle shape slot in the stator yoke (1.3) between adjacent semi-closed port peariform slot (4)
(3), semi-circular groove (3) is distributed along stator (1) even circumferential.
3. requiring the lightweight permanent magnet synchronous motor with high-power density according to right 1, characterized in that the lightweight turns
Sub (2) include rotor yoke (2.1), permanent magnet (2.2) and connection iron core (2.3), and irregular slot (5) is provided on rotor yoke (2.1),
Irregular slot (5) is distributed along rotor (2) even circumferential.
4. requiring the lightweight permanent magnet synchronous motor with high-power density according to right 3, characterized in that the permanent magnet
(2.2) it is surface-mount type samarium cobalt permanent magnet body (2.2), which is close to rotor yoke (2.1) outer surface, with stator tooth (1.2)
There is gap, be circumferentially uniformly distributed, takes radial magnetizing mode, adjacent permanent magnet (2.2) magnetizing direction opposite.
5. requiring the lightweight permanent magnet synchronous motor with high-power density according to right 1, characterized in that the rotor yoke
(2.1) it is connected by connecting iron core (2.3), connection iron core (2.3) is set between adjacent rotor yoke (2.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161551.4A CN108322004A (en) | 2018-02-26 | 2018-02-26 | A kind of lightweight permanent magnet synchronous motor with high-power density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161551.4A CN108322004A (en) | 2018-02-26 | 2018-02-26 | A kind of lightweight permanent magnet synchronous motor with high-power density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108322004A true CN108322004A (en) | 2018-07-24 |
Family
ID=62900323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810161551.4A Pending CN108322004A (en) | 2018-02-26 | 2018-02-26 | A kind of lightweight permanent magnet synchronous motor with high-power density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108322004A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378913A (en) * | 2018-09-12 | 2019-02-22 | 西安交通大学 | A kind of surface fluting durface mounted permanent magnet synchronous motor rotor structure |
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN112152409A (en) * | 2020-08-19 | 2020-12-29 | 沈阳工业大学 | Yoke-free stator/rotor core axial flux permanent magnet motor |
| CN113489279A (en) * | 2021-05-19 | 2021-10-08 | 襄阳中车电机技术有限公司 | Lightweight simulation method for linear motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731086A (en) * | 1993-07-02 | 1995-01-31 | Toyota Motor Corp | Stator structure for three-phase synchronous motor and stator |
| JP2001169519A (en) * | 1999-12-03 | 2001-06-22 | Hitachi Ltd | Brushless motor |
| JP2002136005A (en) * | 2000-10-26 | 2002-05-10 | Honda Motor Co Ltd | Rotating electric machine of with built-in permanent magnet |
| CN102457113A (en) * | 2010-10-25 | 2012-05-16 | 株式会社安川电机 | Rotary electric machine and rotor therefor |
| CN202260676U (en) * | 2011-09-22 | 2012-05-30 | 常州市金乐电机厂 | Brush motor |
-
2018
- 2018-02-26 CN CN201810161551.4A patent/CN108322004A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731086A (en) * | 1993-07-02 | 1995-01-31 | Toyota Motor Corp | Stator structure for three-phase synchronous motor and stator |
| JP2001169519A (en) * | 1999-12-03 | 2001-06-22 | Hitachi Ltd | Brushless motor |
| JP2002136005A (en) * | 2000-10-26 | 2002-05-10 | Honda Motor Co Ltd | Rotating electric machine of with built-in permanent magnet |
| CN102457113A (en) * | 2010-10-25 | 2012-05-16 | 株式会社安川电机 | Rotary electric machine and rotor therefor |
| CN202260676U (en) * | 2011-09-22 | 2012-05-30 | 常州市金乐电机厂 | Brush motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378913A (en) * | 2018-09-12 | 2019-02-22 | 西安交通大学 | A kind of surface fluting durface mounted permanent magnet synchronous motor rotor structure |
| CN109768646A (en) * | 2019-03-12 | 2019-05-17 | 清华大学苏州汽车研究院（吴江） | A kind of hub motor based on magnetism-collected structure rotor axial magnetic field |
| CN109768646B (en) * | 2019-03-12 | 2024-03-19 | 清华大学苏州汽车研究院（吴江） | Hub motor based on magnetic focusing structure rotor axial magnetic field |
| CN112152409A (en) * | 2020-08-19 | 2020-12-29 | 沈阳工业大学 | Yoke-free stator/rotor core axial flux permanent magnet motor |
| CN113489279A (en) * | 2021-05-19 | 2021-10-08 | 襄阳中车电机技术有限公司 | Lightweight simulation method for linear motor |
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| PB01 | Publication | ||
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Application publication date: 20180724 |