CN108390479A - Using the high-speed motor of layering binding hybrid permanent magnet rotor - Google Patents
Using the high-speed motor of layering binding hybrid permanent magnet rotor Download PDFInfo
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- CN108390479A CN108390479A CN201810196142.8A CN201810196142A CN108390479A CN 108390479 A CN108390479 A CN 108390479A CN 201810196142 A CN201810196142 A CN 201810196142A CN 108390479 A CN108390479 A CN 108390479A
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- 239000000463 material Substances 0.000 claims abstract description 78
- 239000006247 magnetic powder Substances 0.000 claims abstract description 27
- 238000004804 winding Methods 0.000 claims description 44
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 35
- 239000004917 carbon fiber Substances 0.000 claims description 35
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 34
- 239000003365 glass fiber Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 102
- 230000005284 excitation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000003137 locomotive effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000027950 fever generation Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002356 single layer 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
-
- 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
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Using the high-speed motor of layering binding hybrid permanent magnet rotor, it is characterised in that：The motor includes casing（1）, stator and layering binding hybrid permanent magnet rotor, stator and rotor are arranged at casing（1）Interior, the conductive permanent-magnet material magnetic powder that this kind is layered elementary layer addition outside rotor can generate shielding to frequency electromagnetic waves, reduce interior elementary layer hybrid permanent magnet material magnetic powder high frequency eddy current losses.This kind of structure can effectively reduce the heat source in rotor, solve high speed rotor of motor problems of excessive heat from the root cause.This kind of structure ensure that the uniformity, globality and consistency of rotor simultaneously, and it is broken can to solve the problems, such as that permanent magnet is occurred in high speed rotation by larger tensile stress from machinery.
Description
Technical field
The present invention relates to a kind of high-speed motors using layering binding hybrid permanent magnet rotor.Belong to motor field problem.
Background technology
Since high-speed electric expreess locomotive rotating speed is high, power density is big, small, can effectively save material；Due to rotary inertia
It is smaller, so dynamic response is very fast；High-speed electric expreess locomotive can be connected directly with working machine or load, eliminated traditional mechanical load and become
Speed variator, thus noise can be reduced and improve transmission system efficiency.The research of high-speed electric expreess locomotive meets the warp of energy-saving and emission-reduction with application
Help development need, have become one of the research hotspot in International Power field at present, high speed grinding machine, air circulation refrigeration system,
Accumulated energy flywheel, high speed centrifugation compressor, air blower, aerospace etc. are with a wide range of applications.
Magneto is simple in structure with its, power energy density is high, without excitation loss, it is efficient the advantages that, be best suited for high speed
Motor.High-speed high frequency motor design difficulty compared with common electric machine is larger, and high-speed electric expreess locomotive rotating speed is up to tens thousand of turns per minute even
Ten tens of thousands of turns, peripheral speed is up to 200m/s or more, and under the circumference of the high-speed rotation, very big, air is lost in stator core to motor
Friction with rotor surface can bring prodigious loss, for high-speed permanent magnet motor, rotor permanent magnet to motor
Eddy-current loss is very big, however the heat dissipation of the rotor of motor is difficult, the temperature of rotor can be caused to rise excessively high, and permanent magnet is in temperature
Irreversible demagnetization can occur in the case of excessively high, cause to seriously endanger to motor, therefore reduce rotor permanent magnet vortex damage
Consumption becomes one of the key problem of high-speed permanent magnet motor design.For high-speed permanent magnet motor, rotor strength problem is more prominent
Go out, permanent magnet tensile strength is much smaller than compression strength, and rotor high speed rotation generates larger centrifugal force, so that permanent magnet is easily occurred broken
Damage, it is therefore necessary to which safeguard measure is taken to permanent magnet.
Invention content
Goal of the invention：The present invention provides a kind of high-speed motor using layering binding hybrid permanent magnet rotor, the purpose is to
Solve that traditional high speed permanent magnet motor rotor eddy-current loss is big, heat dissipation difficulty causes permanent magnet irreversible demagnetization and revolved in high speed
The problem of permanent magnet tension stress breakage in the case of turning, and then improve the reliability and service life of the motor of motor.
The present invention uses following technical scheme：
Using the high-speed motor of layering binding hybrid permanent magnet rotor, it is characterised in that：The motor include casing, stator and
Layering binding hybrid permanent magnet rotor, stator and rotor are arranged in casing, and stator includes stator core and stator winding, stator
Winding be arranged in stator core, rotor axial across stator and rotor and stator there are for cooling gas by axial direction
Interior air duct, tunnel inlet and ducting outlet are respectively arranged on the shell at stator both ends, and tunnel inlet passes through the inside air duct of axis and connects
Ventilating duct exports；So that rotor cooling gas is finally gone out from outlet conduits from the inside air duct of tunnel inlet warp beam, completion pair
The cooling of rotor.
Layering binding hybrid permanent magnet rotor includes elementary layer and turning in rotor core, rotor outer elementary layer, rotor
Elementary layer in son；Elementary layer is arranged outside rotor core in rotor, and elementary layer is arranged in rotor outside elementary layer in rotor, rotor
Outer elementary layer setting outside elementary layer, binds one layer of carbon fiber, each elementary layer is by inside outside the outer elementary layer of rotor in the rotor
The carbon fiber or glass fiber layer of layer are constituted with external hybrid permanent magnet material layer.This kind of novel hybrid permanent magnet structure is novel mixed
It closes permanent-magnet material and replaces binding with carbon fiber, no matter be all novel hybrid permanent magnet material after how many layer, then in outermost layer addition
One layer of carbon fiber.
Stator core is provided with the axial hole passed through for hole rotor vehicle of perforation, and stator winding is arranged in the hole of stator core
In wall.
The both ends at the both ends of stator are additionally provided with winding pressing plate（3）.（Winding pressing plate uses insulating heat-conduction material, main
Effect is the end at fixed winding both ends, while the pressing plate can effectively carry out changing between winding overhang and stator progress
Heat advantageously reduces the Wen Sheng of winding overhang.）
Hybrid permanent magnet material layer（15）It is the material mixed by permanent-magnet material magnetic powder and resin.（The mixed method of material is
By accurate FEM calculation, the excitation needed for motor operation, then according to permanent-magnet material magnetic powder and resin 1：1 ratio
Example is mixed, if because ratio is excessive, will largely effect on the globality of novel permanent magnetic material after mixing, strength problem will be difficult to
Ensure, if ratio is too small, excitation will be difficult to reach, and will increase integral thickness in this way, and then strength problem is also revealed.）
Hybrid permanent magnet material layer（15）Radially from the inside to the outside, with the increase of the unit number of plies, the permanent-magnet material magnetic per layer unit
The content of powder increases successively, and the carbon fiber or glass fiber layer thickness of binding thicken successively, and carries out entirety and magnetize to form several poles
Number.
（According to the power grade of motor, determines the rotor maximum outside diameter of motor, determine the size of excitation needed for motor, just
The number of step estimation rotor layering and the content of magnetic powder, are calculated, successive ignition by the magnetic circuit of motor, final to determine layering number
And each layer particle content, the increase of carbon fiber or glass fiber thickness then need, according to accurate FEM calculation, to calculate outer list
First layer carbon fiber or glass fiber thickness ensure the reliability of interior elementary layer hybrid permanent magnet material enough）Ordinary circumstance, thickness is the same as bundle
The radius squared of rotor after bundle is directly proportional.
Casing（1）Be provided at both ends with end cap（12）.
Stator core（4）Inner wall on be provided with stator slot for fixing winding, which is peariform slot, peariform slot
Opening towards rotor；Upper and lower two layers around component, short distance lap winding is taken to connect, winding uses thin wire several paralleled conductor.（Around
Group is generally divided into Single-layer Windings and Double Layer Winding, using Double Layer Winding at this, therefore is divided into upper layer and lower layer, short-chord winding
Including short pitch lap winding and short pitch wave winding；Several paralleled conductor is to replace original heavy gauge wire using more thin wires, in turn
Reach reduction kelvin effect.）
The thin wire several paralleled conductor is the form that thin wire several paralleled conductor short distance Y connects.（Using the short pitch star of several paralleled conductor line
The connection type connect.）.
Hybrid permanent magnet material and carbon fiber（Or glass fiber）Binding is alternately placed, after binding several elementary layers, at it
Outermost layer binds one layer of carbon fiber, and then forms the rotor of high-speed permanent magnet motor of hybrid permanent magnet layers of material binding structure.
Specifically：The inside air duct of axis is provided between stator winding and rotor periphery；The main feature of its p-m rotor
It is the layering binding structure using hybrid permanent magnet material, hybrid permanent magnet material is mixed with resin by permanent-magnet material magnetic powder, each
Elementary layer by internal layer carbon fiber（Or glass fiber）It is constituted with the hybrid permanent magnet material of outer layer, the carbon fiber of internal layer（Or glass fiber）
It is to be fixed, the hybrid permanent magnet material of outer layer is to provide for excitation.Hybrid permanent magnet material and carbon fiber（Or glass
Silk）Binding is alternately placed, and after binding several elementary layers, one layer of carbon fiber is bound to ensure rotor in its outermost layer
Integral strength, and then form the layering binding structure rotor of high-speed permanent magnet motor of hybrid permanent magnet material.Radially by it is interior extremely
Outside, with the increase of the unit number of plies, the content of permanent-magnet material magnetic powder increases successively, the carbon fiber of binding（Or glass fiber）Thickness according to
It is secondary to thicken, and carry out entirety and magnetize to form several numbers of poles.
Carbon fiber and resin are all electrically insulating materials in this kind layering binding hybrid permanent magnet rotor structure, and have larger electricity
The permanent-magnet material magnetic powder of conductance is mixed with resin, and is layered the layering binding structure that binding constitutes hybrid permanent magnet material with carbon fiber
Rotor can greatly reduce the eddy-current loss that the permanent-magnet material in rotor generates, to effectively reduce rotor heating；Meanwhile
Since carbon fibre material has the characteristics that density is small, tensile strength is big, it is smaller to be affected by temperature, can exist to hybrid permanent magnet material
Safer and more effective protection is provided in the case of rotor high speed rotation, it is mixed that resin can greatly improve permanent-magnet material magnetic powder
Uniformity and globality, the problem for avoiding rotor local stress caused by under high-speed cruising excessive, this kind of rotor are adopted
It can effectively ensure that the reliability of rotor intensity when rotating at high speed with the layering binding structure of hybrid permanent magnet material.
Stator slot on stator for winding to be arranged is peariform slot, upper and lower two layers around component, short distance lap winding is taken to connect
It connects, winding uses thin wire several paralleled conductor, can effectively reduce the added losses as caused by Kelvin effect；Stator core is by ultra-thin
Low-loss cold rolling non-oriented electrical steel piece is overrided to form, and can effectively reduce the core loss under high frequency.
The inside air duct of axis is provided between stator winding and rotor periphery；It is provided with the air inlet in air duct on casing and goes out
Air port.
Advantage and effect：
The present invention proposes a kind of high-speed motor using layering binding hybrid permanent magnet rotor, the hybrid permanent magnet material that rotor uses
Material is to be mixed with resin by permanent-magnet material magnetic powder and magnetized to form several numbers of poles, each elementary layer by internal layer carbon fiber（Or glass
Glass silk）It is constituted with the hybrid permanent magnet material of outer layer, the carbon fiber or glass fiber of internal layer are to be carried out to its internal rotor structure
Fixed to improve intensity, the hybrid permanent magnet material of outer layer is to provide for excitation.Hybrid permanent magnet material and carbon fiber（Or glass fiber）
Binding is alternately placed, and after binding several elementary layers, one layer of carbon fiber is bound to ensure the whole of rotor in its outermost layer
Body intensity, and then form the rotor of high-speed permanent magnet motor of hybrid permanent magnet layers of material binding structure.This kind of hybrid permanent magnet material
From the inside to the outside, with the increase of the unit number of plies, the content of permanent-magnet material magnetic powder increases material layering binding structure rotor successively,
Rotor outermost layer is to intensity requirement maximum, so the carbon fiber thickness of outermost layer binding is larger.In this kind of rotor layered structure, forever
Magnetic material magnetic powder is mixed with resin, can be effectively reduced the eddy-current loss in rotor, and then reduce the heat source of motor, be reduced motor
Wen Sheng.Permanent-magnet material magnetic powder is evenly distributed on rotor circumference surface with resin can ensure the globality and consistency of rotor,
Can be to avoid being unevenly distributed using edge stress caused by permanent magnet partitioned organization the phenomenon that.Simultaneously because carbon fiber twines
Around carbon fiber has the characteristics that density is small, tensile strength is big, it is smaller to be affected by temperature, it is ensured that p-m rotor high temperature and high speed
Under reliability service.
The beneficial effects of the invention are as follows：
1, the ring-shaped structure that this kind layering binding hybrid permanent magnet rotor is formed using magnetic powder and resin, instead of in conventional motor
Magnetic steel ingot adds the partitioned organization of filling block, rotor permanent magnet body portion to ensure that the whole of high speed permanent magnet motor rotor without concentrated stress
Body, uniformity and consistency, eliminate between conventional structure magnet steel piecemeal and edge effect is made between magnet steel and filling block
At local stress excessive caused permanent magnets damage the problem of, and then improve high speed permanent magnet motor rotor tensile strength,
Rotor speed limitation is improved, the output power of motor is increased under the premise of constancy of volume, this is that conventional motor uses magnet steel
Be filled with fill block structure institute it is irrealizable.
2, this kind layering binding hybrid permanent magnet rotor, from the inside to the outside by 1,2,3, n elementary layer group
At each elementary layer includes the hybrid permanent magnet material for providing excitation and the carbon fiber for increasing rotor strength（Or glass fiber）, and
One layer of carbon fiber, which is bound, in outermost layer ensures rotor integral strength.Carbon fibre material is small with density, tensile strength is big, by temperature
Smaller feature is influenced, the structure of this kind of rotor layering binding can ensure hybrid permanent magnet rotor in high-speed and high-temperature significantly
Reliability of operation.
3, this kind of hybrid permanent magnet material is mixed in proportion by permanent-magnet material magnetic powder and resin, and resin is that the bad of electricity is led
Body can effectively reduce the vortex of hybrid permanent magnet material internal after mixing, reduce the loss of the part, and it is tight to solve its local pyrexia
The problem of weight.
4, the conductive permanent-magnet material magnetic powder of this kind layering binding hybrid permanent magnet rotor, outer elementary layer addition can be to high-frequency electromagnetic
Wave generates shielding, reduces the high frequency eddy current losses of permanent-magnet material magnetic powder in interior elementary layer hybrid permanent magnet material.This kind of structure can
The heat source in rotor is effectively reduced, solves high speed rotor of motor problems of excessive heat from the root cause.
5, this kind of rotor structure elasticity modulus is high, and specific strength is high, and density is low, and rotor intrinsic frequency can be improved, and promotes motor
Rotor stability range of operation.
Description of the drawings
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the circuit connection diagram of motor of the present invention.
Fig. 2 is the structure chart of motor of the present invention；
Fig. 3 is rotor unit schematic diagram of a layer structure of the present invention
Fig. 4 is the axial, cross-sectional view of the present invention；
In figure：1. motor case, 2. tunnel inlets, 3. stator pressing plates, 4. stator cores, 5. stator winding, the inside air duct of 6. axis,
7. the outer elementary layer of rotor, elementary layer in 8. rotors, elementary layer in 9. rotors, 10. winding overhangs, 11. ducting outlets, 12 motor sides
Lid, 13. sliding bearings, 14. rotor cores, 15. hybrid permanent magnet materials, 16. carbon fibers（Or glass fiber）.
Specific implementation mode：The present invention is specifically described below in conjunction with the accompanying drawings：
Using the high-speed motor of layering binding hybrid permanent magnet rotor, it is characterised in that：The motor includes casing（1）, stator
And layering binding hybrid permanent magnet rotor, stator and rotor are arranged at casing（1）Interior, stator includes stator core（4）With it is fixed
Sub- winding（5）, stator winding（5）It is arranged in stator core（4）It is interior, rotor axial across stator and rotor and stator there are
For cooling gas by the inside air duct of axis（6）, tunnel inlet is respectively arranged on the shell at stator both ends（2）And ducting outlet
（11）, tunnel inlet（2）Pass through the inside air duct of axis（6）It is connected to ducting outlet（9）；
The layering binding hybrid permanent magnet rotor includes rotor core（14）, the outer elementary layer of rotor（7）, elementary layer in rotor（8）
And elementary layer in rotor（9）；Elementary layer in rotor（9）It is arranged in rotor core（14）Outside, elementary layer in rotor（8）Setting exists
Elementary layer in rotor（9）Outside, the outer elementary layer of rotor（7）Elementary layer in the rotor is set（8）Outside, the outer elementary layer of rotor（7）It ties up outside
Prick one layer of carbon fiber, each elementary layer by interior layer carbon fiber or glass fiber layer（16）With external hybrid permanent magnet material layer
（15）It constitutes.
Stator core（4）It is provided with the axial hole passed through for hole rotor vehicle of perforation, stator winding（5）It is arranged in stator iron
The heart（4）Hole wall in.
The both ends at the both ends of stator are additionally provided with winding pressing plate（3）.
Hybrid permanent magnet material layer（15）It is the material mixed by permanent-magnet material magnetic powder and resin.
Hybrid permanent magnet material layer（15）Radially from the inside to the outside, with the increase of the unit number of plies, the permanent magnetism material per layer unit
The content of material magnetic powder increases successively, and the carbon fiber or glass fiber layer thickness of binding thicken successively, and if carrying out integrally magnetizing to be formed
Dry number of poles.
Casing（1）Be provided at both ends with end cap（12）.
Stator core（4）On be provided with stator slot for fixing winding, which is peariform slot, upper and lower around component
Two layers, short distance lap winding is taken to connect, winding uses thin wire several paralleled conductor.
The thin wire several paralleled conductor is the form that thin wire several paralleled conductor short distance Y connects.
It is described in detail below in conjunction with the accompanying drawings：
As shown in Figure 1, motor is by frequency conversion drive.Machine winding is connected with frequency converter, and frequency converter input end is connected with power grid, outlet
End is connected to the motor, and frequency converter becomes larger the frequency of power grid, and the high speed rotation of motor is realized by frequency converter.Rotor with it is negative
It carries direct-connected, realizes the operation of high-speed equipment.
As shown in Fig. 2, stator core both ends are equipped with winding pressing plate 3, stator winding 5 is embedded in the stator slot of stator core 4.
Stator slot uses peariform slot, the form that winding 5 is connect using thin wire several paralleled conductor short distance Y that can reduce attached under high-frequency drive
Add loss, can also avoid generating larger cogging torque because notch size is larger, reduces torque wave when motor running
It is dynamic, make the operation that motor is more reliable.Rotor carries out radial entirety and magnetizes after machining.When motor operation, cold wind slave
Shell air inlet 2 enters motor, and the inside air duct 6 of axis, the winding overhang through the other end, from the air duct of motor are flowed to by winding overhang
11 outflow of outlet, completes the cooling to motor.Hybrid permanent magnet layers of material binding structure rotor by rotor exterior layer 7, turn
Sub- middle part layer 8, internal rotor layer 9 and rotor core 14 are constituted.Rigid pivoted both ends are supported with sliding bearing 13.
As shown in figure 3, each elementary layer binds one layer of very thin carbon fiber in interior layer（Or glass fiber）It is fixed, so
Excitation is provided for motor in exterior layer addition hybrid permanent magnet material afterwards, hybrid permanent magnet material is uniform by permanent-magnet material magnetic powder and resin
Mixing constitutes this kind layering rotor structure after the superposition of several elementary layers, wherein resin is the non-conductor of electricity, can after mixing
The vortex for effectively reducing hybrid permanent magnet material internal reduces the loss of the part, solves the problems, such as that its local pyrexia is serious.Simultaneously
Concentrated stress when this kind of layered structure is by rotor high-speed cruising is distributed in each elementary layer, and then it is strong to substantially increase rotor
Degree improves rotor speed limitation.
As shown in figure 4, rotor is radially divided into several elementary layers from the inside to the outside according to the content height of magnetic powder, often
The carbon fiber of interior layer in a elementary layer（Or glass fiber）Be in order to be fixed, the hybrid permanent magnet material in exterior layer be in order to
Excitation is provided.When motor operation, rotor field and stator field hinge, rotor provide excitation, therefore material in order to better improve
The utilization rate of material, while ensureing the reliability of intensity in outer elementary layer, during being layered rotor machining, from the inside to the outside, each
Particle content and carbon fiber in elementary layer（Or glass fiber）Thickness increases successively.The conductive permanent-magnet material of outer elementary layer addition simultaneously
Magnetic powder can generate shielding to frequency electromagnetic waves, reduce the high frequency eddy current losses in interior elementary layer permanent-magnet material magnetic powder, this kind of structure
The heat source in rotor can be effectively reduced, solves high speed rotor of motor problems of excessive heat from the root cause.This kind of structure ensure that
Uniformity, globality and the consistency in rotor circumference direction, while the elasticity modulus of this kind of rotor structure is high, specific strength is high, close
It spends low, can be improved rotor intrinsic frequency, promote rotor stable operation range.Carbon fibre material is small with density, tension is strong
Degree is big, is affected by temperature smaller feature, can carry out safer and more effective protection when high temperature and high speed is run to permanent magnet, keep away
Exempt from the excessive problem of local stress during high speed operation of motor.
The features such as motor has higher reliability, simple in structure, and rotor strength is high.
The conductive permanent-magnet material magnetic powder that this kind is layered the outer elementary layer addition of rotor can generate shielding to frequency electromagnetic waves, reduce
Interior elementary layer hybrid permanent magnet material magnetic powder high frequency eddy current losses.This kind of structure can effectively reduce the heat source in rotor, from
High speed rotor of motor problems of excessive heat is solved in root.This kind of structure ensure that the uniformity of rotor, globality and one simultaneously
It is broken can to solve the problems, such as that permanent magnet is occurred in high speed rotation by larger tensile stress from machinery for cause property.
Claims (8)
1. using the high-speed motor of layering binding hybrid permanent magnet rotor, it is characterised in that：The motor includes casing（1）, it is fixed
Son and layering binding hybrid permanent magnet rotor, stator and rotor are arranged at casing（1）Interior, stator includes stator core（4）With
Stator winding（5）, stator winding（5）It is arranged in stator core（4）Interior, rotor axial is stayed across stator and rotor and stator
Have for cooling gas by the inside air duct of axis（6）, tunnel inlet is respectively arranged on the shell at stator both ends（2）Go out with air duct
Mouthful（11）, tunnel inlet（2）Pass through the inside air duct of axis（6）It is connected to ducting outlet（9）；
The layering binding hybrid permanent magnet rotor includes rotor core（14）, the outer elementary layer of rotor（7）, elementary layer in rotor（8）
And elementary layer in rotor（9）；Elementary layer in rotor（9）It is arranged in rotor core（14）Outside, elementary layer in rotor（8）Setting exists
Elementary layer in rotor（9）Outside, the outer elementary layer of rotor（7）Elementary layer in the rotor is set（8）Outside, the outer elementary layer of rotor（7）It ties up outside
Prick one layer of carbon fiber, each elementary layer by interior layer carbon fiber or glass fiber layer（16）With external hybrid permanent magnet material layer
（15）It constitutes.
2. the high-speed motor according to claim 1 using layering binding hybrid permanent magnet rotor, it is characterised in that：Stator
Iron core（4）It is provided with the axial hole passed through for hole rotor vehicle of perforation, stator winding（5）It is arranged in stator core（4）Hole wall
It is interior.
3. the high-speed motor according to claim 1 using layering binding hybrid permanent magnet rotor, it is characterised in that：Stator
The both ends at both ends be additionally provided with winding pressing plate（3）.
4. the high-speed motor according to claim 1 using layering binding hybrid permanent magnet rotor, it is characterised in that：Mixing
Permanent magnet material layer（15）It is the material mixed by permanent-magnet material magnetic powder and resin.
5. the high-speed motor according to claim 4 using layering binding hybrid permanent magnet rotor, it is characterised in that：Mixing
Permanent magnet material layer（15）Radially from the inside to the outside, with the increase of the unit number of plies, the content of the permanent-magnet material magnetic powder per layer unit
Increase successively, the carbon fiber or glass fiber layer thickness of binding thicken successively, and carry out entirety and magnetize to form several numbers of poles.
6. the high-speed motor according to claim 4 using layering binding hybrid permanent magnet rotor, it is characterised in that：Casing
（1）Be provided at both ends with end cap（12）.
7. the high-speed motor according to claim 2 using layering binding hybrid permanent magnet rotor, it is characterised in that：Stator
Iron core（4）Inner wall on be provided with stator slot for fixing winding, which is peariform slot, and the opening of peariform slot is towards turning
Son；Upper and lower two layers around component, short distance lap winding is taken to connect, winding uses thin wire several paralleled conductor.
8. the high-speed motor according to claim 7 using layering binding hybrid permanent magnet rotor, it is characterised in that：It is described
Thin wire several paralleled conductor is the form that thin wire several paralleled conductor short distance Y connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196142.8A CN108390479B (en) | 2018-03-09 | 2018-03-09 | High-speed motor adopting layered binding mixed permanent magnet rotor |
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