CN106411005A - Permanent magnet motor rotor punching sheet with self-starting ability and frequency conversion performance - Google Patents
Permanent magnet motor rotor punching sheet with self-starting ability and frequency conversion performance Download PDFInfo
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- CN106411005A CN106411005A CN201610962809.1A CN201610962809A CN106411005A CN 106411005 A CN106411005 A CN 106411005A CN 201610962809 A CN201610962809 A CN 201610962809A CN 106411005 A CN106411005 A CN 106411005A
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- permanent magnet
- rotor
- motor
- magnetic pole
- self
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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 invention discloses a permanent magnet motor rotor punching sheet with self-starting ability and frequency conversion performance. The punching sheet comprises rotor magnetic poles, permanent magnet slots, permanent magnets, interelectrode slots, and slots which are arranged at the lower parts of the permanent magnet slots and are uniformly distributed. The number of punching poles is larger than or equal to 2, and the number of the magnetic pole permanent magnet slots and the permanent magnets are larger than 1. The magnetic pole angle is 0.75 to 0.8 time of 360/2p, and p is the pole pair number of the motor. The outer circle of each of the rotor magnetic poles is a section of arc with is not concentric with the rotor punching sheet, the radius is (0.89-0.96)*R, and R is the outer circle outer diameter of the rotor punching sheet. The permanent magnets are embedded into the permanent magnet slots, and the interelectrode slots are between the adjacent rotor magnetic poles.
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（Have from
Kinetic force）And variable frequency speed-adjusting permanent magnet synchronous motor.Both motors adopt different rotor punching structures at present, need two sets
Mould, manufacturing cost is high, long the production cycle, 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 groove and permanent magnet are required for enough design spaces, as shown in figure 3, traditional lamination structure is past
Toward such design requirement cannot be met, iron core can only be lengthened to meet design requirement, so resulting in motor cost increases, and leads
Marketing is caused to be limited by selling at exorbitant prices.
If traditional asynchronous starting permanent magnet synchronous motor directly regards frequency control motor applied, due to its rotor knot
Structure often leads to magnetic flux and forms closed magnetic circuit through pole shoe, causes motor excessively saturation, thus reducing the overload capacity of motor.
Content of the invention
Goal of the invention
It is an object of the invention to provide a kind of have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, with
Solve the problems, such as to propose in above-mentioned background technology.
Technical scheme
The present invention is achieved through the following technical solutions：
A kind of have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, and this lamination structure includes rotor magnetic
Pole, permanent magnet trough, permanent magnet, interpolar fluting and the equally distributed groove being arranged on permanent magnet trough bottom；Punching number of poles is more than
Equal to 2, every magnetic pole permanent magnet trough and permanent magnet number are more than or equal to 1；Magnetic pole angle a is 0.75 ~ 0.8 times of 360/2p, and p is electricity
The number of pole-pairs of machine；It to be one section of circular arc with rotor punching decentraction that rotor magnetic pole is cylindrical, and its radius is（0.89~0.93）× R, R
For rotor punching exradius；Permanent magnet embeds in permanent magnet trough, has interpolar fluting between adjacent rotor pole.
The quantity being arranged on the equally distributed groove of permanent magnet trough bottom is the integral multiple of number of poles；Groove top the widest part is groove
Bottom the narrowest go out 3 ~ 4 times of width.
When the equally distributed groove of permanent magnet trough bottom is as self-starting rotor, after this groove cast aluminium, form rising of closure
Dynamic basket structure, makes motor have self-starting ability.
When the equally distributed groove of permanent magnet trough bottom is as variable-frequency motor rotor, this groove not cast aluminium is logical as motor
Air holes and lightening hole.
When in each rotor magnetic pole, permanent magnet trough and permanent magnet are set to 1, the both sides of permanent magnet trough are respectively provided with circular arc；Often
When in individual rotor magnetic pole, permanent magnet trough and permanent magnet are set to 2, the side near interpolar fluting is provided with circular arc, near magnetic pole
The side in central authorities is provided with boss；When in each rotor magnetic pole, permanent magnet trough and permanent magnet number are more than 3, near interpolar fluting
Two permanent magnet trough are being provided with boss near the side in magnetic pole central authorities, are provided with circular arc in the side slotted near interpolar, remaining
The both sides of permanent magnet trough are provided with boss；Projection width in 1.0 ~ 3.0mm, with rotor punching external 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 beneficial effect：
1st, 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 save mould
Tool material cost and human cost, shorten the construction cycle again, decrease seriation punching specification quantity, can effectively reduce enterprise
Every cost.
2nd, the equally distributed groove of permanent magnet trough bottom, use is more also more flexible, during as self-starting rotor,
This groove 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, this groove not cast aluminium, the air vent as motor and lightening hole.
3rd, the equally distributed groove of permanent magnet trough bottom, compared with traditional structure, its design space is bigger, can be also by excellent
Change design grooved size, improve the starting performance of motor it is not necessary to again starting and runnability be taken into account using lengthening mode unshakable in one's determination, can
Effectively reduce weight and the cost of motor.
4th, magnetic pole is cylindrical is one section of circular arc with rotor punching decentraction, and its radius is（0.89~0.93）× R, R are rotor
Punching exradius.Permanent magnet trough is being provided with boss structure near two grooves of interpolar near the side in magnetic pole central authorities, close
The permanent magnet trough in magnetic pole central authorities is provided with boss structure in the both sides of groove.In 1.0 ~ 3.0mm, it rushes projection width apart from magnetic pole
Piece external diameter distance is in 0.8 ~ 1.5mm.Interpolar arranges groove structure, and depth of groove is 2 ~ 2.5 times of permanent magnetism body thickness.Can effectively protect
The sine of card motor-field, reduces motor harmonic loss, increases the overload capacity of motor, improves the runnability of motor.
Brief description
Fig. 1 is rotor punching figure of the present invention.
Fig. 2 is punching partial enlarged drawing of the present invention.
Fig. 3 is conventional asynchronous starting motor rotor punching figure.
Description of reference numerals：
1- rotor magnetic pole, 2- permanent magnet trough, 3- interpolar is slotted, the equally distributed groove of 4- permanent magnet trough bottom, a- magnetic pole angle,
5- boss, 6- traditional motor permanent magnet groove, 7- cage grooves, 8- circular arc.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings：
The present invention propose a kind of there is the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, as shown in figure 1,
This lamination structure includes rotor magnetic pole 1, permanent magnet trough 2, permanent magnet, interpolar fluting 3 and is arranged on the equal of permanent magnet trough bottom
The groove 4 of even distribution；Punching number of poles is more than or equal to 2, and every magnetic pole permanent magnet trough and permanent magnet number are more than or equal to 1；Magnetic pole angle a is
0.75 ~ 0.8 times of 360/2p, p is the number of pole-pairs of motor；It to be one section of circular arc with rotor punching decentraction that rotor magnetic pole 1 is cylindrical,
Its radius is（0.89~0.93）× R, R are rotor punching exradius；Permanent magnet embeds in permanent magnet trough 2, adjacent rotor pole
There is between 1 interpolar fluting 3.So that the pole embrace of motor and air-gap field is more optimized, effectively reduce air-gap field humorous
Ripple content, reduces motor harmonic loss and vibration noise.
The quantity being arranged on the equally distributed groove 4 of permanent magnet trough bottom is the integral multiple of number of poles；Groove top the widest part is
Groove bottom the narrowest go out 3 ~ 4 times of width.Rotor magnetic field so can be made symmetrical, and keep rotor magnetic close in zone of reasonableness
Within, it is to avoid produce circulation in the stator windings because magnetic field is asymmetric.
When the equally distributed groove 4 of permanent magnet trough bottom is as self-starting rotor, after this groove cast aluminium, form closure
Start basket structure, make motor have self-starting ability.
When the equally distributed groove 4 of permanent magnet trough bottom is as variable-frequency motor rotor, this groove not cast aluminium is logical as motor
Air holes and lightening hole.
As shown in Fig. 2 when in each rotor magnetic pole, permanent magnet trough and permanent magnet are set to 1, the both sides of permanent magnet trough are equal
Setting circular arc 8；When in each rotor magnetic pole, permanent magnet trough and permanent magnet are set to 2, the side near interpolar fluting is provided with
Circular arc 8, the side near magnetic pole central authorities is provided with boss 5；In each rotor magnetic pole, permanent magnet trough and permanent magnet number are more than 3
When, two permanent magnet trough 2 near interpolar fluting are being provided with boss 5 near the side in magnetic pole central authorities, near interpolar fluting
Side be provided with circular arc 8, the both sides of remaining permanent magnet trough are provided with boss 5.
Projection width in 1.0 ~ 3.0mm, with rotor punching external diameter distance in 0.8 ~ 1.5mm.So can be in limited rotor magnetic
Place more permanent magnets in the space of pole, improve motor performance, ensure that motor flux leakage is less, permanent magnet produces more effective simultaneously
Magnetic flux.
The depth of groove of interpolar fluting 3 is 2 ~ 2.5 times of permanent magnetism body thickness.So can effectively adjust motor quadrature axis reactance,
Increase the overload capacity of motor.
Embodiment 1：
A kind of have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, as depicted in figs. 1 and 2, this punching
Structure includes rotor magnetic pole, permanent magnet trough, permanent magnet, interpolar fluting and is arranged on the equally distributed of permanent magnet trough bottom
Groove.Punching number of poles is 4 poles, and every magnetic pole permanent magnet trough and permanent magnet number are 3 pieces, and magnetic pole angle is the 0.75 ~ 0.8 of 360/2p
Times, p is the number of pole-pairs of motor, and it to be one section of circular arc with rotor punching decentraction that magnetic pole is cylindrical, and its radius is（0.89~0.93）×
R, R are rotor punching exradius, are arranged on the equally distributed groove of permanent magnet trough bottom.
As shown in figure 1, for the requirement to motor starting performance for the load, being uniformly distributed of optimization design permanent magnet trough bottom
Flute profile, the present embodiment slot number adopt 28 grooves, grooved adopts convex slot, to meet starting performance, makes rotor magnetic circuit simultaneously
Magnetic is close to be reasonably distributed, and runnability is excellent.Compared with traditional structure, electric machine iron core length shortens 8% to this example, and permanent magnet consumption subtracts
Few 28.7%, the effective material cost of motor reduces by 15%.
It to be one section of circular arc with rotor punching decentraction that magnetic pole is cylindrical, and its radius is（0.89~0.93）× R, as Fig. 2 institute
Show, interpolar arranges groove structure, depth of groove is 2 ~ 2.5 times of permanent magnetism body thickness, can effectively reduce as frequency control motor
Harmonic content, reduce harmonic loss, improve motor overload capacity, reduce motor operating current.Start punching with conventional asynchronous
Piece directly applies to frequency control motor and compares, and performance is more excellent.
In sum, 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 had both saved mold materials cost and human cost, and had shortened the construction cycle again, decreases 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
Save more than 15%, starting motor stamping with conventional asynchronous, to be applied to performance more excellent.
Embodiments of the invention are only schematically to be illustrated using 4 pole rotor structures, the not limit to the present invention
System, in the case of the present invention can be used in all numbers of poles and rotor structure.
Claims (6)
1. a kind of have self-starting ability take into account work frequency conversion performance rotor sheet of permanent magnet motor it is characterised in that：This punching is tied
Structure includes rotor magnetic pole（1）, permanent magnet trough（2）, permanent magnet, interpolar fluting（3）And it is arranged on the uniform of permanent magnet trough bottom
The groove of distribution（4）；Punching number of poles is more than or equal to 2, and every magnetic pole permanent magnet trough and permanent magnet number are more than or equal to 1；Magnetic pole angle（a）
For 360/2p 0.75 ~ 0.8 times, p is the number of pole-pairs of motor；Rotor magnetic pole（1）Cylindrical is with rotor punching decentraction one section
Circular arc, its radius is（0.89~0.93）× R, R are rotor punching exradius；Permanent magnet embeds permanent magnet trough（2）In, adjacent
Rotor magnetic pole（1）Between have interpolar fluting（3）.
2. according to claim 1 have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, and it is special
Levy and be：It is arranged on the equally distributed groove of permanent magnet trough bottom（4）Quantity be number of poles integral multiple；Groove top the widest part is
Groove bottom the narrowest go out 3 ~ 4 times of width.
3. according to claim 1 and 2 have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, its
It is characterised by：The equally distributed groove of permanent magnet trough bottom（4）During as self-starting rotor, after this groove cast aluminium, form closure
Starting basket structure, make motor have self-starting ability.
4. according to claim 1 and 2 have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, its
It is characterised by：The equally distributed groove of permanent magnet trough bottom（4）During as variable-frequency motor rotor, this groove not cast aluminium, as motor
Air vent and lightening hole.
5. according to claim 1 have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, and it is special
Levy and be：When in each rotor magnetic pole, permanent magnet trough and permanent magnet are set to 1, the both sides of permanent magnet trough are respectively provided with circular arc（8）；
When in each rotor magnetic pole, permanent magnet trough and permanent magnet are set to 2, the side near interpolar fluting is provided with circular arc（8）, lean on
The side in nearly magnetic pole central authorities is provided with boss（5）；When in each rotor magnetic pole, permanent magnet trough and permanent magnet number are more than 3, close
Two permanent magnet trough of interpolar fluting（2）The side in magnetic pole central authorities is being provided with boss（5）, in slotting near interpolar
Side is provided with circular arc（8）, the both sides of remaining permanent magnet trough are provided with boss（5）；Projection width, in 1.0 ~ 3.0mm, is rushed with rotor
Piece external diameter distance is in 0.8 ~ 1.5mm.
6. according to claim 1 have the rotor sheet of permanent magnet motor that self-starting ability takes into account work frequency conversion performance, and it is special
Levy and be：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 true CN106411005A (en) | 2017-02-15 |
| CN106411005B CN106411005B (en) | 2018-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610962809.1A Active 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 |
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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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| CN106411005B (en) | 2018-10-16 |
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| CB03 | Change of inventor or designer information |
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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