CN106411005B - The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability - Google Patents
The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability Download PDFInfo
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- CN106411005B CN106411005B CN201610962809.1A CN201610962809A CN106411005B CN 106411005 B CN106411005 B CN 106411005B CN 201610962809 A CN201610962809 A CN 201610962809A CN 106411005 B CN106411005 B CN 106411005B
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- permanent magnet
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability, which includes rotor magnetic pole, permanent magnet trough, permanent magnet, interpolar fluting and equally distributed slot in permanent magnet trough lower part is arranged the invention discloses a kind of；Punching number of poles is more than or equal to 2, and per magnetic pole permanent magnet trough and permanent magnet number is more than or equal to 1；Magnetic polar angle is 0.75 ~ 0.8 times of 360/2p, and p is the number of pole-pairs of motor；Rotor magnetic pole outer circle is one section of circular arc with rotor punching decentraction, and radius is（0.89~0.93）× R, R are rotor punching exradius；Permanent magnet is embedded in permanent magnet trough, has interpolar fluting between adjacent rotor pole.
Description
Technical field
The present invention relates to electric motors, specifically a kind of height with self-starting ability and the outstanding runnability of work frequency conversion
Cost performance rotor sheet of permanent magnet motor structure.
Background technology
Magneto is different with the method for operation by starting, and is generally divided into asynchronous starting permanent magnet synchronous motor（With from
Kinetic force）And variable frequency speed-adjusting permanent magnet synchronous motor.Both motors use different rotor punching structures at present, need two sets
Mold, manufacturing cost is high, and the production cycle is long, and corresponding cost of labor is also high, is unfavorable for the cost efficiency of enterprise.
High-Performance Asynchronous starting permanent-magnet synchronous motor must simultaneously meet high starting quality factor and high efficiency, high power
Factor, therefore rotor cage slot and permanent magnet are required for enough design spaces, as shown in figure 3, traditional lamination structure is past
Toward cannot be satisfied such design requirement, iron core can only be lengthened to meet design requirement, motor cost increase is resulted in this way, leading
Marketing is caused to be limited by selling at exorbitant prices.
If traditional asynchronous starting permanent magnet synchronous motor directly regards frequency control motor application, due to its rotor knot
Structure often leads to magnetic flux and forms closed magnetic circuit by pole shoe, causes motor to be excessively saturated, to reduce the overload capacity of motor.
Invention content
Goal of the invention
The purpose of the present invention is to provide a kind of permanent magnet machine rotor punchings taking into account work frequency conversion performance with self-starting ability
Piece, to solve the problems mentioned in the above background technology.
Technical solution
The present invention is achieved through the following technical solutions：
A kind of rotor sheet of permanent magnet motor for taking into account work frequency conversion performance with self-starting ability, which includes rotor
The equally distributed slot that magnetic pole, permanent magnet trough, permanent magnet, interpolar are slotted and are arranged in permanent magnet trough lower part；Punching number of poles is big
In equal to 2, per magnetic pole permanent magnet trough and permanent magnet number is more than or equal to 1；Magnetic polar angle a is 0.75 ~ 0.8 times of 360/2p, and p is
The number of pole-pairs of motor；Rotor magnetic pole outer circle is one section of circular arc with rotor punching decentraction, and radius is（0.89~0.93）× R,
R is rotor punching exradius；Permanent magnet is embedded in permanent magnet trough, has interpolar fluting between adjacent rotor pole.
Be arranged the equally distributed slot of permanent magnet trough lower part quantity be number of poles integral multiple；Slot top the widest part is slot
Lower part most it is narrow go out 3 ~ 4 times of width.
Being closed is formed when the equally distributed slot of permanent magnet trough lower part is as self-starting rotor, after the slot cast aluminium
Dynamic basket structure, makes motor have self-starting ability.
When the equally distributed slot of permanent magnet trough lower part is as variable-frequency motor rotor, the slot not cast aluminium, as the logical of motor
Air holes and lightening hole.
When permanent magnet trough and permanent magnet are set as 1 in each rotor magnetic pole, the both sides of permanent magnet trough are respectively provided with circular arc；Often
When permanent magnet trough and permanent magnet are set as 2 in a rotor magnetic pole, the side of interpolar fluting is provided with circular arc, close to magnetic pole
The side in center is provided with boss；When permanent magnet trough and permanent magnet number are more than 3 in each rotor magnetic pole, close to interpolar fluting
Two permanent magnet troughs are provided with boss in the side close to magnetic pole center, and circular arc is being equipped with close to the side of interpolar fluting, remaining
The both sides of permanent magnet trough are both provided with boss；Projection width is in 1.0 ~ 3.0mm, with rotor punching outer diameter distance in 0.8 ~ 1.5mm.
The depth of groove of interpolar fluting is 2 ~ 2.5 times of permanent magnetism body thickness.
Advantage and effect
The invention has the advantages that and advantageous effect：
1, rotor structure of the present invention can be shared with a set of punching asynchronous starting and permanent magnet motor and frequency control motor, both be saved
Mold material cost and human cost are saved, and shortens the development cycle, reduces seriation punching specification quantity, can effectively reduce
Enterprise's items cost.
2, the equally distributed slot of permanent magnet trough lower part, use is more also more flexible, when as self-starting rotor,
The slot is cage grooves, forms the starting basket structure of closure after cast aluminium, forms the self-starting ability of motor.As variable-frequency motor rotor
When, the slot not cast aluminium, as the ventilation hole and lightening hole of motor.
3, the equally distributed slot of permanent magnet trough lower part, compared with traditional structure, design space bigger can be also by excellent
Change design grooved size, improves the starting performance of motor, it is not necessary to starting and runnability are taken into account using lengthening iron core mode again, it can
Effectively reduce the weight and cost of motor.
4, magnetic pole outer circle is one section of circular arc with rotor punching decentraction, and radius is（0.89~0.93）× R, R are rotor
Punching exradius.Permanent magnet trough is provided with boss structure close to two slots of interpolar in the side close to magnetic pole center, close
The permanent magnet trough in magnetic pole center is both provided with boss structure in the both sides of slot.Projection width is rushed in 1.0 ~ 3.0mm apart from magnetic pole
Piece outer diameter distance is in 0.8 ~ 1.5mm.Groove structure is arranged in interpolar, and depth of groove is 2 ~ 2.5 times of permanent magnetism body thickness.It can effectively protect
The sine of motor-field is demonstrate,proved, motor harmonic loss is reduced, increases the overload capacity of motor, improve the runnability of motor.
Description of the drawings
Fig. 1 is rotor punching figure of the present invention.
Fig. 2 is punching partial enlarged view of the present invention.
Fig. 3 is conventional asynchronous starting motor rotor punching figure.
Reference sign：
1- rotor magnetic poles, 2- permanent magnet troughs, 3- interpolars fluting, the equally distributed slot of 4- permanent magnet troughs lower part, a- magnetic poles
Angle, 5- boss, 6- traditional motor permanent magnet slots, 7- cage grooves, 8- circular arcs.
Specific implementation mode
Following further describes the present invention with reference to the drawings：
The present invention proposes a kind of rotor sheet of permanent magnet motor for taking into account work frequency conversion performance with self-starting ability, such as Fig. 1
Shown, which includes rotor magnetic pole 1, permanent magnet trough 2, permanent magnet, interpolar fluting 3 and is arranged in permanent magnet trough lower part
Equally distributed slot 4；Punching number of poles is more than or equal to 2, and per magnetic pole permanent magnet trough and permanent magnet number is more than or equal to 1；Magnetic pole angle
0.75 ~ 0.8 times that a is 360/2p is spent, p is the number of pole-pairs of motor；1 outer circle of rotor magnetic pole is one section with rotor punching decentraction
Circular arc, radius are（0.89~0.93）× R, R are rotor punching exradius；Permanent magnet is embedded in permanent magnet trough 2, adjacent turn
There is interpolar fluting 3 between sub- magnetic pole 1.The pole embrace and air-gap field for making motor so more optimize, and effectively reduce air gap
Magnetic field harmonics content reduces motor harmonic loss and vibration noise.
Be arranged the equally distributed slot 4 of permanent magnet trough lower part quantity be number of poles integral multiple；Slot top the widest part is
Slot lower part most it is narrow go out 3 ~ 4 times of width.Rotor magnetic field can be made symmetrical in this way, and keep rotor flux density in zone of reasonableness
Within, it avoids generating circulation in the stator windings due to magnetic field asymmetry.
When the equally distributed slot 4 of permanent magnet trough lower part is as self-starting rotor, closure is formed after the slot cast aluminium
Basket structure is started, makes motor that there is self-starting ability.
When the equally distributed slot 4 of permanent magnet trough lower part is as variable-frequency motor rotor, the slot not cast aluminium, as the logical of motor
Air holes and lightening hole.
As shown in Fig. 2, when permanent magnet trough and permanent magnet are set as 1 in each rotor magnetic pole, the both sides of permanent magnet trough are equal
Circular arc 8 is set；When permanent magnet trough and permanent magnet are set as 2 in each rotor magnetic pole, it is provided with close to the side of interpolar fluting
Circular arc 8, the side close to magnetic pole center are provided with boss 5；Permanent magnet trough and permanent magnet number are more than 3 in each rotor magnetic pole
When, two permanent magnet troughs 2 close to interpolar fluting are provided with boss 5 in the side close to magnetic pole center, slot close to interpolar
Side be equipped with circular arc 8, the both sides of remaining permanent magnet trough are both provided with boss 5.
Projection width is in 1.0 ~ 3.0mm, with rotor punching outer diameter distance in 0.8 ~ 1.5mm.It in this way can be in limited rotor magnetic
More permanent magnets are placed in the space of pole, improve motor performance, while ensureing that motor flux leakage is smaller, and permanent magnet generates more effective
Magnetic flux.
The depth of groove of interpolar fluting 3 is 2 ~ 2.5 times of permanent magnetism body thickness.Motor quadrature axis reactance can be effectively adjusted in this way,
Increase the overload capacity of motor.
Embodiment 1：
A kind of rotor sheet of permanent magnet motor for taking into account work frequency conversion performance with self-starting ability as depicted in figs. 1 and 2 should
Lamination structure includes rotor magnetic pole, permanent magnet trough, permanent magnet, interpolar fluting and being uniformly distributed in permanent magnet trough lower part is arranged
Slot.Punching number of poles is 4 poles, and per magnetic pole permanent magnet trough and permanent magnet number is 3 pieces, and magnetic polar angle is the 0.75 ~ 0.8 of 360/2p
Times, p is the number of pole-pairs of motor, and magnetic pole outer circle is one section of circular arc with rotor punching decentraction, and radius is（0.89~0.93）×
R, R are rotor punching exradius, and the equally distributed slot in permanent magnet trough lower part is arranged.
As shown in Figure 1, the requirement for load to motor starting performance, optimization design permanent magnet trough lower part is uniformly distributed
Flute profile, the present embodiment slot number use 28 slots, groove profile use convex slot, to meet starting performance, while making rotor magnetic circuit
Flux density is reasonably distributed, and runnability is excellent.This example is compared with traditional structure, and electric machine iron core length shortens 8%, and permanent magnet dosage subtracts
Few 28.7%, the effective material cost of motor reduces by 15%.
Magnetic pole outer circle is one section of circular arc with rotor punching decentraction, and radius is（0.89~0.93）× R, such as Fig. 2 institutes
Show, groove structure is arranged in interpolar, and depth of groove is 2 ~ 2.5 times of permanent magnetism body thickness, can effectively be reduced as frequency control motor
Harmonic content, reduce harmonic loss, improve the overload capacity of motor, reduce motor operating current.It starts and rushes with conventional asynchronous
Piece directly applies to frequency control motor and compares, and performance is more excellent.
In conclusion the rotor sheet of permanent magnet motor structure of the present invention, can with a set of punching asynchronous starting and permanent magnet motor and
Frequency control motor shares, and has not only saved mold materials cost and human cost, but also shorten the development cycle, reduces seriation punching
Piece specification quantity can effectively reduce enterprise's items cost.Material cost can save compared with traditional structure asynchronous starting and permanent magnet motor
15% or more is saved, it is better to be applied to performance with conventional asynchronous starting motor stamping.
The embodiment of the present invention is only schematically to be illustrated using 4 pole rotor structures, not to the limit of the present invention
System, the present invention can be used in the case of all numbers of poles and rotor structure.
Claims (5)
1. a kind of rotor sheet of permanent magnet motor for taking into account work frequency conversion performance with self-starting ability, it is characterised in that：The punching knot
Structure includes rotor magnetic pole（1）, permanent magnet trough（2）, permanent magnet, interpolar fluting（3）And it is arranged in the uniform of permanent magnet trough lower part
The slot of distribution（4）；Punching number of poles is more than or equal to 2, and per magnetic pole permanent magnet trough and permanent magnet number is more than or equal to 1；Magnetic polar angle（a）
It it is 0.75 ~ 0.8 times of 360/2p, p is the number of pole-pairs of motor；Rotor magnetic pole（1）Outer circle is one section with rotor punching decentraction
Circular arc, radius are（0.89~0.93）× R, R are rotor punching exradius；Permanent magnet is embedded in permanent magnet trough（2）In, it is adjacent
Rotor magnetic pole（1）Between have interpolar fluting（3）；
When permanent magnet trough and permanent magnet are set as 1 in each rotor magnetic pole, the both sides of permanent magnet trough are respectively provided with circular arc（8）；Often
When permanent magnet trough and permanent magnet are set as 2 in a rotor magnetic pole, the side of interpolar fluting is provided with circular arc（8）, close
The side in magnetic pole center is provided with boss（5）；When permanent magnet trough and permanent magnet number are more than 3 in each rotor magnetic pole, proximal pole is leaned on
Between two permanent magnet troughs slotting（2）Side close to magnetic pole center is provided with boss（5）, close to the side of interpolar fluting
Equipped with circular arc（8）, the both sides of remaining permanent magnet trough are both provided with boss（5）；Projection width is in 1.0 ~ 3.0mm, with rotor punching
Outer diameter distance is in 0.8 ~ 1.5mm.
2. the rotor sheet of permanent magnet motor according to claim 1 for taking into account work frequency conversion performance with self-starting ability, special
Sign is：Equally distributed slot in permanent magnet trough lower part is set（4）Quantity be number of poles integral multiple；Slot top the widest part is
Slot lower part most it is narrow go out 3 ~ 4 times of width.
3. the rotor sheet of permanent magnet motor according to claim 1 or 2 that work frequency conversion performance is taken into account with self-starting ability,
It is characterized in that：The equally distributed slot of permanent magnet trough lower part（4）It is formed and is closed when as self-starting rotor, after the slot cast aluminium
Starting basket structure, make motor have self-starting ability.
4. the rotor sheet of permanent magnet motor according to claim 1 or 2 that work frequency conversion performance is taken into account with self-starting ability,
It is characterized in that：The equally distributed slot of permanent magnet trough lower part（4）When as variable-frequency motor rotor, the slot not cast aluminium, as motor
Ventilation hole and lightening hole.
5. the rotor sheet of permanent magnet motor according to claim 1 for taking into account work frequency conversion performance with self-starting ability, special
Sign is：Interpolar is slotted（3）Depth of groove be 2 ~ 2.5 times of permanent magnetism body thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962809.1A CN106411005B (en) | 2016-11-04 | 2016-11-04 | The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962809.1A CN106411005B (en) | 2016-11-04 | 2016-11-04 | The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106411005A CN106411005A (en) | 2017-02-15 |
| CN106411005B true CN106411005B (en) | 2018-10-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005278238A (en) * | 2004-03-23 | 2005-10-06 | Ishikawajima Harima Heavy Ind Co Ltd | Stator core for motor |
| EP1976101A2 (en) * | 2007-03-28 | 2008-10-01 | Hitachi, Ltd. | Induction machine with etched lamination sheets |
| CN102820721A (en) * | 2012-08-22 | 2012-12-12 | 哈尔滨电机厂有限责任公司 | High-speed permanent magnetic wind driven generator rotor sheet |
| CN103580429A (en) * | 2013-11-21 | 2014-02-12 | 大连东利伟业环保节能科技有限公司 | Asynchronous starting method of half magnetic sheet type permanent-magnet synchronous motor |
| CN104184293A (en) * | 2014-07-16 | 2014-12-03 | 赵晓东 | Adjusting-type pole-changing speed-changing permanent-magnet synchronous motor |
| CN206283341U (en) * | 2016-11-04 | 2017-06-27 | 沈阳工业大学 | The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability |
-
2016
- 2016-11-04 CN CN201610962809.1A patent/CN106411005B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005278238A (en) * | 2004-03-23 | 2005-10-06 | Ishikawajima Harima Heavy Ind Co Ltd | Stator core for motor |
| EP1976101A2 (en) * | 2007-03-28 | 2008-10-01 | Hitachi, Ltd. | Induction machine with etched lamination sheets |
| CN102820721A (en) * | 2012-08-22 | 2012-12-12 | 哈尔滨电机厂有限责任公司 | High-speed permanent magnetic wind driven generator rotor sheet |
| CN103580429A (en) * | 2013-11-21 | 2014-02-12 | 大连东利伟业环保节能科技有限公司 | Asynchronous starting method of half magnetic sheet type permanent-magnet synchronous motor |
| CN104184293A (en) * | 2014-07-16 | 2014-12-03 | 赵晓东 | Adjusting-type pole-changing speed-changing permanent-magnet synchronous motor |
| CN206283341U (en) * | 2016-11-04 | 2017-06-27 | 沈阳工业大学 | The rotor sheet of permanent magnet motor of work frequency conversion performance is taken into account with self-starting ability |
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| CN106411005A (en) | 2017-02-15 |
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Inventor after: Wang Jin Inventor after: Gao Jun Inventor after: Chen Long Inventor after: Zhou Ting Inventor after: Wang Kaidong Inventor before: Wang Jin Inventor before: Gao Jun Inventor before: Chen Long Inventor before: Zhou Ting |
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