CN206878666U - Low-speed direct driving Self-starting permanent magnet motor - Google Patents
Low-speed direct driving Self-starting permanent magnet motor Download PDFInfo
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- CN206878666U CN206878666U CN201720493296.4U CN201720493296U CN206878666U CN 206878666 U CN206878666 U CN 206878666U CN 201720493296 U CN201720493296 U CN 201720493296U CN 206878666 U CN206878666 U CN 206878666U
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- permanent magnet
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- direct driving
- magnetic
- speed direct
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- 239000004411 aluminium Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000000930 thermomechanical effect Effects 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims 1
- 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 14
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 230000005284 excitation Effects 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
It the utility model is related to motor component field, and in particular to low-speed direct driving Self-starting permanent magnet motor.What the utility model was achieved by the following technical programs：Low-speed direct driving Self-starting permanent magnet motor, include stator and rotor, the rotor includes rotating shaft, starts cage bar and the rotor core being located in the rotating shaft, outside of the rotor core away from the rotating shaft core is provided with multiple holding tanks, permanent magnet is provided with each holding tank, the permanent magnet in each holding tank is a magnetic pole, and all magnetic poles are spaced identical, and the level of the adjacent magnetic pole is on the contrary, the permanent magnet is connected with every magnetic part.The purpose of this utility model is to provide low-speed direct driving Self-starting permanent magnet motor, when matching the industrial requirement of middle and slow speed of revolution output, without using reductor or variable frequency drives, and has the good stability of a system.
Description
Technical field
The present invention relates to motor component field, and in particular to low-speed direct driving Self-starting permanent magnet motor.
Background technology
Motor is industrial common driving equipment, can convert electrical current into mechanical energy.Motor includes stator and turned
Son, the rotation for realizing rotor relative stator is brought by the change in magnetic field and electric current, rotor includes rotating shaft, and the rotation of rotating shaft is
Power output.
Different according to realization principle, the species and model of motor are also classified into multiclass, such as can be divided into direct current generator and exchange
Motor, the variable rotated according to changes of magnetic field and rotor can be divided into synchronous motor and asynchronous machine, and according to the rotating speed of motor and
Strategy, it can also be divided into high-speed electric expreess locomotive, middle speed motor and slowspeed machine.
In commercial Application, the power output of middle low speed is many times needed, if rotating speed is in 187.5-500 revs/min
Low speed, in the prior art, the processing for middle low speed mainly have following three kinds of schemes.
Scheme one, the mode that reductor is matched using the common asynchronous moter of routine are realized.
But there are two defects in such scheme, on the one hand, reductor can increase trouble point, possible oil leak, but also
Have cumbersome later stage intermittent oiling maintenance.If reductor can reduce service life, system noise without periodic maintenance
Also can be larger.So conventional asynchronous motor acceleration and deceleration machine system can not only increase cost and can also increase system noise, and subsequently
Maintenance cost, it is also possible to there is oil leak situation.
On the other hand, asynchronous machine acceleration and deceleration chance make it that whole system is less efficient；Asynchronous machine efficiency relatively phase itself
Same specification magneto is low, and reductor also has efficiency in itself.Such as Y2 45kW asynchronous machines efficiency 92.5%, 1:10 subtract
Fast machine efficiency 93% in the case of undercapacity or lubrication are not charged, then whole system efficiency is only 92.5% × 93%=
85.03%。
Scheme two, the adjustment of speed output is realized using converter technique.Using variable frequency drives plus frequency conversion permanent magnet motor.
The defects of this scheme is that input cost is too high, and the variable frequency drives for adding vector control algorithm are needed for magneto, are compared
Asynchronous machine acceleration and deceleration machine scheme efficiency has improvement, but frequency converter also has conversion efficiency in itself.Frequency-variable controller may need
Motor increases position sensor, for monitoring rotor position angle in real time.
Scheme three, using self-running ferrite permanent-magnet motor.
Such scheme equally exists the defects of certain.First, ferrite is compared to rare earth permanent-magnetic material magnetic energy product very
It is low, only 1/10.Secondly, ferrite is cheaper than rare earth in itself, but for equal-wattage rotating speed motor, rare-earth permanent-magnet electric machine ratio
Ferrite volume is much smaller.Production and processing and cost of transportation increase, although ferrite in itself cheap corresponding silicon steel sheet and
Enamel-covered wire and structural member cost are substantially increased cost and differ and be no different, but motor volume weight is big, systems bulky.Again,
Ferrite compares rare earth, and it is much larger that remanent magnetism varies with temperature rate.Iron oxygen remanent magnetism temperature coefficient -0.2%/DEG C 0-100 DEG C；Neodymium iron
Boron -0.11%/DEG C；Aluminium nickel cobalt -0.02%/DEG C.Residual magnetism temperature coefficient influences the counter electromotive force of magneto, counter electromotive force fluctuation meeting
Current of electric and efficiency fluctuation are brought, influences the stability of a system.Finally, ferrite motor is, it is necessary to the bigger space of rotor hollow out
Ferrite is loaded, rotor stress intensity difference, although little for slow-speed of revolution direct driving motor power, moment of torsion is conventional 5-8
Times.
The content of the invention
It is an object of the invention to provide low-speed direct driving Self-starting permanent magnet motor, in the industrial requirement of matching middle and slow speed of revolution output
When, without using reductor or variable frequency drives, and there is the good stability of a system.
The present invention above-mentioned technical purpose technical scheme is that：Low-speed direct driving self-starting permanent magnet electricity
Machine, comprising stator and rotor, the rotor includes rotating shaft, starts cage bar and the rotor core being located in the rotating shaft, described turn
Outside of the sub- iron core away from the rotating shaft core is provided with multiple holding tanks, is provided with permanent magnet in each holding tank, each
Permanent magnet in the holding tank is a magnetic pole, and all magnetic poles are spaced identical, and the level of the adjacent magnetic pole
On the contrary, the permanent magnet is connected with every magnetic part.
As a preference of the present invention, the starting cage bar is multiple, it is uniformly distributed, and quantity is the whole of the number of magnetic poles
Several times.
As a preference of the present invention, the holding tank is yi word pattern, bearing of trend by the axle center of the rotating shaft, it is described forever
Magnet is located in the holding tank of yi word pattern.
Every magnetic part it is magnetic bridge as a preference of the present invention, described, the magnetic bridge is vertical with the permanent magnet, and described
The tangential direction of rotating shaft is parallel, and the conflict link position of the permanent magnet and the magnetic bridge is located at the middle part of the magnetic bridge.
As a preference of the present invention, the holding tank is V-shape, two blocks of permanent magnetism are provided with each holding tank
Body, it is arranged in into V-shape in holding tank.
As a preference of the present invention, it is described every magnetic part be air every magnetic part, comprising positioned at two pieces of permanent magnets away from institute
State two outer magnet isolation tanks of rotating shaft one end and an interior magnet isolation tank positioned at two pieces of permanent magnets close to described rotating shaft one end.
As a preference of the present invention, described every being provided with cast aluminium sliver in magnetic part, the cast aluminium sliver and the starting cage
Bar collectively forms rotor cage.
As a preference of the present invention, also comprising the support base that contact with ground, the support base by close ground direction according to
Secondary to include heat dissipating layer, cushion, articulamentum, supporting layer and base, the cushion is included into the double thermo mechanical frame of X-shape and position
In the bilevel first-level buffer block of the double thermo mechanical frame, the first-level buffer block offers the deformation extended in the horizontal direction
Hole.
As a preference of the present invention, the heat dissipating layer offers multiple heat dissipation channels in vertical direction extension, it is described to dissipate
The bore of the upper shed of the passage of heat is more than the bore of under shed.
As a preference of the present invention, multiple passages in vertical direction extension, the support are offered on the articulamentum
Layer includes air bag and the support column positioned at the air bag periphery.
In summary, the present invention has the advantages that：
1. use permanent magnet, the characteristics of keeping magneto efficiency high.
2. realizing that middle and slow speed of revolution is run by self structure, without high frequency conversion equipment and reductor, cost is saved.
3rd, by setting every magnetic part, permanent magnet is formed and buffered, optimizes magnetic circuit, avoids the phenomenon of permanent magnet loss of excitation.
4th, radial load can be provided for rotor every magnetic part, improves the mechanical strength of motor.
Brief description of the drawings：
Fig. 1 is the schematic diagram of rotor in embodiment 1；
Fig. 2 is the schematic diagram of rotor in embodiment 2.
Fig. 3 is the side sectional view of support base.
In figure：
1st, rotor core, 2, start cage bar, 3, every magnetic part, 4, permanent magnet, 5, rotating shaft, 6, support base, 61, heat dissipating layer,
611st, heat dissipation channel, 62, cushion, 621, first-level buffer block, 622, double thermo mechanical frame, 63, articulamentum, 631, passage, 64,
Supporting layer, 641, air bag, 642, support column, 65, base.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Embodiment 1, as shown in figure 1, low-speed direct driving Self-starting permanent magnet motor, comprising stator and rotor, rotor includes rotating shaft
5th, start cage bar 2 and the rotor core 1 being located in rotating shaft 5, outside of the rotor core 1 away from the axle center of rotating shaft 5 are provided with multiple receivings
Groove, is provided with permanent magnet 4 in each holding tank, and the permanent magnet 4 in each holding tank is a magnetic pole, and all magnetic poles are spaced
It is identical, and the level of adjacent pole is on the contrary, permanent magnet 4 is connected with every magnetic part 3.
Wherein, the structure of stator is same as the prior art, is passed through after alternating current, and stator forms the magnetic field of a rotation.
The periphery that cage bar 2 is located at rotor is started, in start-up course, with rotating excitation field magnetic strength cutting, production occur for static starting cage bar 2
Raw induced-current, so as to produce electromagnetic force, acts in rotating shaft 5 and forms electromagnetic rotating, drive shaft 5 rotates, and realizes rotor
Automatic start.It is multiple to start cage bar 2, is uniformly distributed, and quantity is the integral multiple of number of magnetic poles.
In this embodiment, holding tank is V-shape, and two pieces of permanent magnets 4 are provided with each holding tank, appearance is arranged in into V-shape
Receive in groove.Every magnetic part 3 be air every magnetic part, comprising positioned at two pieces of permanent magnets 4 away from two outer magnet isolation tanks of the one end of rotating shaft 5 and position
An interior magnet isolation tank in two pieces of permanent magnets 4 close to the one end of rotating shaft 5.Every being provided with cast aluminium sliver in magnetic part 3, cast aluminium sliver is with rising
Dynamic cage bar 2 collectively forms rotor cage.
Under normal circumstances, the starting current times of self-starting permanent magnet synchronous motor are more suitable than the asynchronous machine of same power grade,
Stator current and rotor current caused by sensing will produce very big demagnetization magnetic potential during starting, if V type groove structures do not take magnetic
In the case that road optimizes, magnetic circuit is distorted, and is caused the demagnetization magnetic potential to act directly on the part of part permanent magnet 4, that is, is started
When, electromagnetic force can be acted directly on permanent magnet 4, be unfavorable for the maintenance of equipment with stably.Part easily occurs for this meeting permanent magnet
Loss of excitation, and progressively deteriorate until permanent magnet whole loss of excitation.
In the technical program, be additionally arranged outer magnetic bridge and interior magnetic bridge, inside can with cast aluminium or not cast aluminium, outside every
In the presence of magnetic bridge and interior magnetic bridge, the degree that magnetic circuit distorts in starting process is effectively reduced, it is suppressed that the inner magnet of permanent magnet 4
Close change, and ensure that the phenomenon of local loss of excitation will not occur for permanent magnet 4
In addition, during rotor startup and operation, can be acted on by electromagnetic force and the load reverse with electromagnetic force
Power, influence is caused on the mechanical stability of permanent magnet 4, and in the technical program, every magnetic part 3, especially interior magnet isolation tank, give
Permanent magnet 4 provides the centrifugal force away from the axis direction of rotating shaft 5, enhances support, radial load is provided to rotor, there is provided
The mechanical strength of whole motor.
When rotor startup terminates, and whole rotor stability rotates, the generation of electromagnetic force more comes from permanent magnet
4, rather than start cage bar 2.
Embodiment 2, as shown in Fig. 2 being permanent magnet 4 and every in the setting of magnetic part 3 with the difference of embodiment 1.
In the present embodiment, holding tank is yi word pattern, and bearing of trend is located at yi word pattern by the axle center of rotating shaft 5, permanent magnet 4
Holding tank in.Be magnetic bridge every magnetic part, magnetic bridge is vertical with permanent magnet 4, parallel with the tangential direction of rotating shaft 5, permanent magnet 4 with
The conflict link position of magnetic bridge is located at the middle part of magnetic bridge.Every being provided with cast aluminium sliver in magnetic part 3, cast aluminium sliver is with starting cage
Bar 2 collectively forms rotor cage.
In the present embodiment, holding tank is not V-shape, but yi word pattern.Such structure make it that space availability ratio is higher,
More permanent magnets 4 can be disposed, i.e., can form more magnetic poles.In the running of rotor, the quantity of magnetic pole and rotor
The quantity of rotating speed inverse correlation, i.e. magnetic pole is more, may be such that the rotary speed of rotor is lower, more adapts to the industrial requirement of the slow-speed of revolution.
It is same as Example 1, the setting of magnetic bridge, avoid magnetic circuit and be distorted that rear permanent magnet part loss of excitation is serious to be showed
As reducing the loss of internal rotor, improving the efficiency of motor.Magnetic bridge not only optimizes magnetic circuit, yet forms both one with
The reverse pulling force of electromagnetic force, so as to improve the mechanical strength of motor.
As shown in figure 3, the bottom of motor is provided with support base 6, antidetonation of the lifting motor in running, Jing Yin and radiating
Performance.
Support base 6 is pressed includes heat dissipating layer 61, cushion 62, articulamentum 63, supporting layer 64 and bottom successively close to ground direction
Seat 65, cushion 62 are included into the double thermo mechanical frame 622 of X-shape and positioned at 622 bilevel first-level buffer of double thermo mechanical frame
Block 621, first-level buffer block 621 offer the deformation hole extended in the horizontal direction.
Many vibrations can be produced in motor operation, in the technical program, are filtered using two level antidetonation, and
It is the mode of deformation energy-absorbing.Double thermo mechanical frame 622 positioned at middle part is in X-shape, and the design of scissors can be in vertical direction
Upper carry out deformation, so as to absorb the vibration of vertical direction.First-level buffer block 621 is designed with the upper and lower ends of double thermo mechanical frame 622,
Centre offers the deformation hole that insertion opens up, and absorbs vibration using the deformation of these through holes.
Heat dissipating layer 61 offers multiple heat dissipation channels 611 in vertical direction extension, the mouth of the upper shed of heat dissipation channel 611
Footpath is more than the bore of under shed.Heat dissipating layer 61 itself can be made of heat sink material, heat dissipation channel 611 it is suitable for reading big, lower mouth is small
Design be due to top position closer to rotor part, heat is more, suitable for reading big to be beneficial to discharge.And if it is under setting that lower mouth is small
Make a slip of the tongue big, then can influence the contact area of first-level buffer block and unload power interface.
Multiple passages 631 in vertical direction extension are offered on articulamentum 63, supporting layer 64 includes air bag 641 and is located at
The support column 642 on the periphery of air bag 641.
Claims (10)
1. low-speed direct driving Self-starting permanent magnet motor, includes stator and rotor, it is characterised in that：The rotor includes rotating shaft（5）, rise
Dynamic cage bar（2）Be located at the rotating shaft（5）On rotor core（1）, the rotor core（1）Away from the rotating shaft（5）Axle center
Outside be provided with multiple holding tanks, be provided with permanent magnet in each holding tank（4）, the permanent magnet in each holding tank
（4）For a magnetic pole, all magnetic poles are spaced identical, and the level of the adjacent magnetic pole is on the contrary, the permanent magnet（4）
It is connected with every magnetic part（3）.
2. low-speed direct driving Self-starting permanent magnet motor according to claim 1, it is characterised in that：The starting cage bar（2）For
It is multiple, it is uniformly distributed, and quantity is the integral multiple of the number of magnetic poles.
3. low-speed direct driving Self-starting permanent magnet motor according to claim 1, it is characterised in that：The holding tank is a word
Type, bearing of trend pass through the rotating shaft（5）Axle center, the permanent magnet（4）It is located in the holding tank of yi word pattern.
4. low-speed direct driving Self-starting permanent magnet motor according to claim 3, it is characterised in that：It is described every magnetic part be every magnetic
Bridge, the magnetic bridge and the permanent magnet（4）Vertically, with the rotating shaft（5）Tangential direction it is parallel, the permanent magnet（4）With
The conflict link position of the magnetic bridge is located at the middle part of the magnetic bridge.
5. low-speed direct driving Self-starting permanent magnet motor according to claim 1, it is characterised in that：The holding tank is V-shape,
Two pieces of permanent magnets are provided with each holding tank（4）, it is arranged in into V-shape in holding tank.
6. low-speed direct driving Self-starting permanent magnet motor according to claim 5, it is characterised in that：It is described every magnetic part（3）For sky
Air bound magnetic part, comprising positioned at two pieces of permanent magnets（4）Away from the rotating shaft（5）Two outer magnet isolation tanks of one end and positioned at two pieces
The permanent magnet（4）Close to the rotating shaft（5）One interior magnet isolation tank of one end.
7. according to the low-speed direct driving Self-starting permanent magnet motor described in claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that：Institute
State every magnetic part（3）In cast aluminium sliver is installed, the cast aluminium sliver and the starting cage bar（2）Collectively form rotor cage.
8. according to the low-speed direct driving Self-starting permanent magnet motor described in claim 1 or 2 or 3 or 4 or 5 or 6, it is characterised in that：Also
Include the support base contacted with ground（6）, the support base（6）Heat dissipating layer is included successively by close to ground direction（61）, buffering
Layer（62）, articulamentum（63）, supporting layer（64）With base（65）, the cushion（62）Include the double thermo mechanical frame into X-shape
（622）With positioned at the double thermo mechanical frame（622）Bilevel first-level buffer block（621）, the first-level buffer block（621）Open
Provided with the deformation hole extended in the horizontal direction.
9. low-speed direct driving Self-starting permanent magnet motor according to claim 8, it is characterised in that：The heat dissipating layer（61）Open up
There are multiple heat dissipation channels in vertical direction extension（611）, the heat dissipation channel（611）The bore of upper shed be more than under shed
Bore.
10. low-speed direct driving Self-starting permanent magnet motor according to claim 9, it is characterised in that：The articulamentum（63）On
Offer multiple passages in vertical direction extension（631）, the supporting layer（64）Include air bag（641）With positioned at the air bag
（641）The support column on periphery（642）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493296.4U CN206878666U (en) | 2017-05-05 | 2017-05-05 | Low-speed direct driving Self-starting permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493296.4U CN206878666U (en) | 2017-05-05 | 2017-05-05 | Low-speed direct driving Self-starting permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN206878666U true CN206878666U (en) | 2018-01-12 |
Family
ID=61339591
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|---|---|---|---|
| CN201720493296.4U Active CN206878666U (en) | 2017-05-05 | 2017-05-05 | Low-speed direct driving Self-starting permanent magnet motor |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921274A (en) * | 2017-05-05 | 2017-07-04 | 吴凡 | Low-speed direct driving Self-starting permanent magnet motor |
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2017
- 2017-05-05 CN CN201720493296.4U patent/CN206878666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921274A (en) * | 2017-05-05 | 2017-07-04 | 吴凡 | Low-speed direct driving Self-starting permanent magnet motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190517 Address after: 211505 Room 201, 404 Three Units, Hengsheng Park, 399 Xiongzhou South Road, Longchi Street, Liuhe District, Nanjing City, Jiangsu Province Patentee after: Nanjing Hegong Power Technology Co., Ltd. Address before: 230001 No. 11 Jinhu Road, Shuangfeng Industrial Park, Changfeng County, Hefei City, Anhui Province Patentee before: Wu Fan |
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| TR01 | Transfer of patent right |