CN108566003A - A kind of built-in radial permanent magnet rotor structure - Google Patents
A kind of built-in radial permanent magnet rotor structure Download PDFInfo
- Publication number
- CN108566003A CN108566003A CN201710846145.7A CN201710846145A CN108566003A CN 108566003 A CN108566003 A CN 108566003A CN 201710846145 A CN201710846145 A CN 201710846145A CN 108566003 A CN108566003 A CN 108566003A
- Authority
- CN
- China
- Prior art keywords
- rotor
- permanent magnet
- item
- cage
- core
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 58
- 238000004080 punching Methods 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 22
- 229910052782 aluminium Inorganic materials 0.000 description 22
- 239000004411 aluminium Substances 0.000 description 20
- 230000004907 flux Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
- H02K21/46—Motors having additional short-circuited winding for starting as an asynchronous motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of built-in radial permanent magnet rotor structure, including shaft, it is sleeved on shaft upper rotor part iron core, it is integral that rotor core at least connects shape through cage item by 2 sections of core packets with end ring, each core packet includes sleeve rotor section, the permanent magnet loaded at least 2 pairs pole in sleeve rotor section, the magnetic pole of the permanent magnet of adjacent two core packet is identical, and sleeve rotor section is formed by stacking by multi-disc rotor punching；Cage item includes multiple cage items one, two or more cage item two, and the section of cage item one is circle, and the section of cage item two is by rounded portions, the rectangular portion being connected with rounded portions；Cage item one is located between the rounded portions of adjacent two cages item two, and permanent magnet is located between the rectangular portion of adjacent two cages item two.The rectangular portion of cage item two is divided into every magnetic stripe, carries out, every magnetic, substituting traditional air gap every magnetic to two pieces of left and right permanent magnet, has effectively acted as carrying out adjacent permanent magnet the purpose every magnetic.The present invention has the advantages that big compact-sized, power density, dependable performance, with long service life.
Description
Technical field
The present invention relates to a kind of permanent magnet rotor structures.
Background technology
Permasyn morot by whether there is or not winding is started, can be divided on rotor without the motor for starting winding and have starting around
The motor of group, the former is frequently referred to speed governing permasyn morot, and the latter is frequently referred to asynchronous starting permanent magnet synchronous motor.It is asynchronous
Starting and permanent magnet motor can be not only used for speed governing operation again can be asynchronous caused by winding using starting under a certain frequency and voltage
Torque starting, when make it is adjustable in frequency, require starting torque larger transmission system when, forming one has damping（It starts）Around
The speed governing permasyn morot of group.
According to permanent magnet in the difference of rotor-position, the rotor magnetic circuit structural figure of permasyn morot generally can be divided into three
Kind：Surface-type, built-in and Lundell.The p-m rotor of surface-type rotor magnetic circuit structural and claw-pole rotor magnetic structure manufactures
Simple for process, at low cost, application is relatively broad, but because rotor surface can not place starting winding, cannot without asynchronous starting capability
For asynchronous starting permanent magnet synchronous motor.
In built-in rotor magnetic structure, permanent magnet is usually located at internal rotor, permanent magnetism external surface in stator core
Have in pole shoe made of ferromagnetic material between circle, have in pole shoe electric conductor rise damping and priming, move, steady-state behaviour it is good, extensively
The general permasyn morot for being applied to require to have asynchronous starting ability.
Built-in rotor magnetic structure can be divided into hybrid, tangential and radial again.Mixed rotor magnetic circuit structural needs
It is carried out every magnetic every magnetic magnetic bridge using more, manufacturing process is complicated, while the mechanical strength of rotor punching is also declined.Tangentially
Every pole magnetic flux of bigger can be obtained in formula rotor magnetic circuit structural, but magnetic leakage factor is larger, general using the peace for being axially inserted into permanent magnet
When dress mode, due to the influence of rotor end ring size, the radial height of permanent magnet is subject to certain restrictions, and can make motor in this way
Volume increases, and the manufacturing process and manufacturing cost of motor are higher.
Permanent magnet is axially inserted into permanent magnet trough by radial rotor magnetic circuit structural, and passes through the air gap every magnetic magnetic bridge
Leakage magnetic flux is limited, it is simple for process, but exist and occupy punching bulk every magnetic magnetic bridge, cause motor volume to increase, cost increases
Add.It is smaller every magnetic magnetic bridge width, leakage magnetic flux can be more limited, but punching mechanical strength can be made to be deteriorated, also be wanted every the length of magnetic magnetic bridge
Ensure certain size, otherwise the magnetism isolating effect of magnetic bridge will be decreased obviously.Every the machine every magnetic energy power and rotor core of magnetic magnetic bridge
Tool intensity is inversely proportional, i.e., stronger every magnetic energy power, mechanical strength is poorer.Especially when electromotor series are more, every magnetic magnetic bridge meeting
Larger dimensional space, the bad mechanical strength of rotor core are occupied, while also reducing the installation dimension of radial permanent magnet body, is led
It causes permanent magnet that cannot provide enough every pole magnetic fluxs, eventually leads to motor volume increase, cost increases, power density is reduced.
Invention content
It is provided it is an object of the invention to overcome the above-mentioned insufficient of the built-in rotor magnetic circuit radial structure prior art
One kind is compact-sized, power density is big, diameter built in dependable performance, asynchronous starting permanent magnet synchronous motor magnet steel with long service life
To formula permanent magnet rotor structure.
Technical program of the present invention lies in：Including shaft, it is sleeved on shaft upper rotor part iron core, rotor core is at least by 2 iron legs
Core section connects that shape is integral through cage item with end ring, and each core packet includes sleeve rotor section, loaded at least 2 in sleeve rotor section
To the permanent magnet of pole, the magnetic pole of the permanent magnet of adjacent two core packet is identical, and sleeve rotor section is formed by stacking by multi-disc rotor punching；
The end ring is located at rotor core both ends, and cage item runs through rotor core, and end ring and cage item fix rotor core integral；
The cage item includes multiple cage items one, two or more cage item two, and the section of the cage item one is circle, the cage item two
Section is by rounded portions, the rectangular portion being connected with rounded portions；Cage item one is located between the rounded portions of adjacent two cages item two, permanent magnet
Between the rectangular portion of adjacent two cages item two.
The cage item one, cage item two are uniformly distributed.
The rotor punching is equipped with shaft mounting hole, hold-down bars hole one, mounting hole one corresponding with cage item, mounting hole
Two, center roller partition is equipped with shaft mounting hole, hold-down bars hole two, mounting hole corresponding with cage item three, four, and hold-down bars is inserted
Loaded in hold-down bars hole one, hold-down bars hole two；The length that the section of the mounting hole one is round hole portion, is connected with circle hole portion
Rectangular hole portion, round and rectangular segment is each filled with aluminium when casting aluminum rotor.The section of mounting hole two is round hole, the mounting hole
Three structure is identical as the structure of mounting hole one, and the structure of the mounting hole four is identical as the structure of mounting hole two.End ring and cage
The material of item can use aluminium.
The section of the permanent magnet is arc-shaped.
Arc-shaped permanent magnet mounting groove is additionally provided on the rotor punching, permanent magnet is axially inserted into arc-shaped permanent magnet peace
Tankage.
The rotor core both ends are respectively equipped with end rotor catch, be equipped between adjacent two core packet center roller every
Piece.
The hold-down bars is plugged in core packet, end rotor catch, on center roller partition.
The hold-down bars both ends are riveted with end rotor catch.
The present invention passes through two kinds of cast aluminium cage size and shapes on special designing rotor punching and rotor partition, rotor casting
After the completion of aluminium, two top of cage item is cylinder, and lower section is cuboid, is communicated up and down.Cage item one is cylinder.All cage items play
The ability of permasyn morot asynchronous starting is improved, starting torque when starting is increased.Cage item two is playing raising permanent-magnet synchronous
While motor asynchronous starting ability, the rectangular segment cast aluminium item of cage item two be every magnetic stripe, to the two pieces of permanent magnets in left and right into
Row substitutes traditional air gap every magnetic every magnetic, has effectively acted as carrying out adjacent permanent magnet the purpose every magnetic.It is this every magnetic
Mode disposably casts out by cage item and every magnetic stripe simultaneously when using cast aluminium, enhances the overall mechanical strength of rotor core.Simultaneously
Adjacent permanent magnet shares cast aluminium item and carries out every magnetic, it is possible to reduce adjacent permanent magnet respectively every the width and length of magnetic magnetic bridge,
The leakage magnetic flux of radial rotor magnetic circuit structural is efficiently reduced, magnetic leakage factor is reduced, the installation space of bigger is provided for permanent magnet,
Improve the power density of motor.By the design of rotor partition and hold-down bars, assembly, the machinery for enhancing p-m rotor is strong
Degree.Rotor core is compacted into an entity by radial permanent magnet rotor structure of the present invention by cast aluminium end ring and cast aluminium cage item, this
Rotor punching and permanent magnetism when kind structure is by increasing the frictional force of segmented rotor punching and rotor partition to overcome rotor to rotate
While the centrifugal force of body, also increases the starting torque of motor, improve the starting performance of motor, be suitable for having required turn
The big load behavior of square.Iron core is tensed with hold-down bars, enhances rotor mechanical strength, while simple in structure, is easily installed.
Description of the drawings
Fig. 1 is rotor punching schematic diagram.
Fig. 2 is rotor partition schematic diagram.
Fig. 3 is the structural schematic diagram of rotor core.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is the structural schematic diagram of the present invention.
Specific implementation mode
There are four built-in radial permanent magnet body slots, outer circle to be evenly equipped with 16 circular cage holes and 4 in Fig. 1, on rotor punching 3
A abnormity cage hole, this 4 special-shaped cage holes top is circle, and lower section is rectangle, is communicated up and down.This structure is rectangular by 4
Shape is integrated every magnetic magnetic bridge and the design of circular cage item, can be provided the permanent magnet space of bigger, be improved the power density of motor, together
When cast aluminium when disposably cast out simultaneously by cage item and every magnetic stripe, reduce technological process, enhance the mechanical strength of rotor core.
Uniformly distributed four circular holes among punching, for passing through hold-down bars 4, rotor punching 3, rotor partition 2 are fixed on one by hold-down bars 4,
Enhance the mechanical strength of rotor core 10.Rotor punching 3 is made of the good ferromagnetic material of magnetic property.
In Fig. 2,2 outer circle of rotor partition is evenly equipped with 16 circular cage holes and 4 special-shaped cage holes, this 4 special-shaped cage items
It is circle above hole, lower section is rectangle, is communicated up and down.Uniformly distributed four circular holes in centre, for passing through hold-down bars 4.Rotor partition 2
Similar to rotor punching structure, only without four built-in radial permanent magnet body slots of processing, rotor partition 2 uses non-magnetic material
Rotor core 10 is isolated into two sections of rotor units by material, also by permanent magnet while rotor partition 2 reinforces the intensity of rotor structure
5 isolation, reduce the leakage magnetic flux of radial rotor magnetic circuit structural, reduce magnetic leakage factor.
In Fig. 3,4, it is two sections that rotor punching 3, which averagely laminates, is separated by rotor partition 2 between every section.20 in rotor punching 3
A cage hole uses cast aluminium cage item, and each component of rotor passes through 16 cast aluminium cage items, 1,4 cast aluminium cage item 6 and cast aluminium after the completion of cast aluminium
End ring 8 becomes a firm entirety, and this structure is turned in the frictional force for increasing segmented rotor unit and rotor partition with overcoming
When son rotation while the centrifugal force of rotor punching and permanent magnet, also increase the starting torque of motor, improves rising for motor
Dynamic performance, is suitable for the load behavior for requiring starting torque big.In axial direction by permanent magnet 5 from the both ends of rotor core 10
It is sequentially placed into permanent magnet trough.Sequentially pass through rotor catch 9, rotor core 10, rotor catch 9 by hold-down bars 4 is axial, both ends with
Rotor catch 9 is riveted tightly.This structure can reinforce the mechanical strength of rotor, be suitable for high-speed rotating rotor, simple in structure, convenient for peace
Dress, ensures the reliability service of motor.
In Fig. 5, shaft 7 uses stainless steel, rotor core 10 to be directly sleeved in shaft, and it is same to form a kind of asynchronous starting and permanent magnet
Walk electromotor permanent magnet rotor structure.
Implementation process is as follows：
By Fig. 1, Fig. 2 processing rotor punching 3 and rotor partition 2, it is two sections, every section as shown in Figure 3 averagely to laminate rotor punching
Between separated by rotor partition 2.
After the completion of laminating, aluminum process processing is carried out.Cage hole uses cast aluminium cage item in rotor punching 3, after the completion of cast aluminium
Rotor unit and rotor partition by 8,16 cast aluminium cage items 1 of cast aluminium end ring and 4 cast aluminium cage items 6 become one it is firm whole
Body.
In axial direction permanent magnet 5 is sequentially placed into from the both ends of rotor core 10 in permanent magnet trough.
Hold-down bars 4 is axially sequentially passed through into rotor catch 9, rotor core 10, rotor catch 9, both ends and 9 riveting of rotor catch
Tightly.Hold-down bars 4 is suitable for high-speed rotating rotor, ensures the reliability service of motor to reinforce the mechanical strength of rotor.
Shaft 7 uses stainless steel material, and rotor core 10 is directly sleeved in shaft, simple in structure, and composition is asynchronous a kind of
Dynamic permasyn morot permanent magnet rotor structure.
Claims (8)
1. a kind of built-in radial permanent magnet rotor structure, it is characterised in that：Including shaft（7）, be sleeved on shaft upper rotor part iron core
（10）, rotor core（10）At least connect that shape is integral, and each core packet includes hollow turn with end ring through cage item by 2 sections of core packets
Subsegment, the permanent magnet loaded at least 2 pairs pole in sleeve rotor section, the magnetic pole of the permanent magnet of adjacent two core packet is identical, hollow
Rotor section is by multi-disc rotor punching（3）It is formed by stacking；The end ring is located at rotor core both ends, and cage item runs through rotor core, end
Ring and cage item fix rotor core integral；
The cage item includes multiple cage items one, two or more cage item two, and the section of the cage item one is circle, the cage item two
Section is by rounded portions, the rectangular portion being connected with rounded portions；Cage item one is located between the rounded portions of adjacent two cages item two, permanent magnet
Between the rectangular portion of adjacent two cages item two.
2. built-in radial permanent magnet rotor structure according to claim 1, it is characterised in that：The cage item one, cage item two
It is uniformly distributed.
3. built-in radial permanent magnet rotor structure according to claim 1, it is characterised in that：The rotor punching（3）On
Equipped with shaft mounting hole, hold-down bars hole one, mounting hole one corresponding with cage item, mounting hole two, center roller partition is equipped with
Shaft mounting hole, hold-down bars hole two, mounting hole corresponding with cage item three, four, hold-down bars（4）It is plugged in hold-down bars hole one, consolidates
Determine in stick hole two；The rectangle hole portion that the section of the mounting hole one is round hole portion, is connected with circle hole portion, mounting hole two
Section be round hole, the structure of the mounting hole three is identical as the structure of mounting hole one, the structure and peace of the mounting hole four
The structure for filling hole two is identical.
4. built-in radial permanent magnet rotor structure according to claim 1, it is characterised in that：The section of the permanent magnet is
It is arc-shaped.
5. built-in radial permanent magnet rotor structure according to claim 4, it is characterised in that：The rotor punching（3）On
It is additionally provided with arc-shaped permanent magnet mounting groove, permanent magnet is axially inserted into arc-shaped permanent magnet mounting groove.
6. built-in radial permanent magnet rotor structure according to claim 1, it is characterised in that：The rotor core（10）Two
End is respectively equipped with end rotor catch（9）, center roller partition is equipped between adjacent two core packet（2）.
7. built-in radial permanent magnet rotor structure according to claim 6, it is characterised in that：Hold-down bars（4）It is plugged in iron
Core section, end rotor catch, on center roller partition.
8. built-in radial permanent magnet rotor structure according to claim 7, it is characterised in that：The hold-down bars（4）Both ends
It is riveted with end rotor catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846145.7A CN108566003B (en) | 2017-09-19 | 2017-09-19 | Built-in radial permanent magnet rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846145.7A CN108566003B (en) | 2017-09-19 | 2017-09-19 | Built-in radial permanent magnet rotor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108566003A true CN108566003A (en) | 2018-09-21 |
| CN108566003B CN108566003B (en) | 2024-03-15 |
Family
ID=63529254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710846145.7A Active CN108566003B (en) | 2017-09-19 | 2017-09-19 | Built-in radial permanent magnet rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108566003B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114915066A (en) * | 2022-05-30 | 2022-08-16 | 河南黄河旋风股份有限公司 | Permanent magnet motor rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009060438A1 (en) * | 2009-12-22 | 2011-06-30 | KSB Aktiengesellschaft, 67227 | Rotor with short-circuit cage |
| CN104184284A (en) * | 2014-01-25 | 2014-12-03 | 赵晓东 | Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor |
| CN205356108U (en) * | 2016-01-22 | 2016-06-29 | 尚勤贵 | Self -starting permanent magnet synchronous motor's rotor |
| CN207304196U (en) * | 2017-09-19 | 2018-05-01 | 襄阳航力机电技术发展有限公司 | A kind of built-in radial permanent magnet rotor structure |
-
2017
- 2017-09-19 CN CN201710846145.7A patent/CN108566003B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009060438A1 (en) * | 2009-12-22 | 2011-06-30 | KSB Aktiengesellschaft, 67227 | Rotor with short-circuit cage |
| CN104184284A (en) * | 2014-01-25 | 2014-12-03 | 赵晓东 | Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor |
| CN205356108U (en) * | 2016-01-22 | 2016-06-29 | 尚勤贵 | Self -starting permanent magnet synchronous motor's rotor |
| CN207304196U (en) * | 2017-09-19 | 2018-05-01 | 襄阳航力机电技术发展有限公司 | A kind of built-in radial permanent magnet rotor structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114915066A (en) * | 2022-05-30 | 2022-08-16 | 河南黄河旋风股份有限公司 | Permanent magnet motor rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108566003B (en) | 2024-03-15 |
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