CN207010497U - A kind of axial magnetic field stator partition type magneto - Google Patents
A kind of axial magnetic field stator partition type magneto Download PDFInfo
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- CN207010497U CN207010497U CN201720944285.3U CN201720944285U CN207010497U CN 207010497 U CN207010497 U CN 207010497U CN 201720944285 U CN201720944285 U CN 201720944285U CN 207010497 U CN207010497 U CN 207010497U
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- stator
- permanent magnet
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- winding
- magnetic field
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Abstract
The utility model discloses a kind of axial magnetic field stator partition type magneto, concentratred winding is used including stator, rotor, threephase armature winding and pulsed field magnetization armature winding winding, armature winding is wrapped on the stator tooth of two adjacent H type unit stator cores, Al-Ni-Co permanent magnet distributes alternately among adjacent H types unit stator core into N, S pole, Exciting Windings for Transverse Differential Protection is wrapped on Al-Ni-Co permanent magnet, rotor uses tray type structure, radial on rotor disk uniformly to place the extremely alternate Nd-Fe-B permanent magnet of N, S, stator is connected with rotor coaxial.The utility model improves the power density of motor, while adds Al-Ni-Co permanent magnet on-line control function, it is also equipped with wider rotating speed range of operation, and associated drives occasion that is smaller, compact-sized, needing weak magnetism speed expansion is required suitable for axial dimension.
Description
Technical field
Technical field of motor manufacture is the utility model is related to, specifically a kind of axial magnetic field stator partition type Permanent Magnet and Electric
Machine.
Background technology
With the continuous improvement of rare earth permanent-magnetic material performance, magneto is due to its high efficiency, high power density, structure letter
The advantages that single, obtained a wide range of applications in the field such as Aeronautics and Astronautics and automobile.In various magnetoes, axially
Magnetic field permanent magnet motor, also known as disc type electric machine, not only have the characteristics that short axial dimension, small volume, compact-sized, and due to
Its high torque density and high efficiency, there is obvious superiority in many particular applications, have become the focus of research, mainly
Applied to motion control, straight drive occasion that is smaller and having big torque-demand, such as electric automobile are required especially suitable for axial dimension
Wheel hub motor.
Permagnetic synchronous motor as driving, it is desirable to which air-gap field when motor is operated in low speed permanent torque area is enough
Height, there is higher energy index；And motor should be able to weaken air-gap field sufficiently low, make when being operated in high speed invariable power area
Motor has wider speed adjustable range.Conventional axial magnetic field permanent magnet synchronous motor is due to the intrinsic spy of the permanent-magnet materials such as neodymium iron boron
Property, air-gap field is held essentially constant in motor, limits it and the application of occasion is directly driven in wide range speed controls such as electric automobiles.Mesh
Preceding people are expanded forever using weak magnetism speed expansion technology one after another in order to keep magneto output-constant operation in wider velocity interval
The power output of magneto at high speeds.Realizing the scheme of weak magnetic control to magneto in the prior art mainly has two
Kind, first, adjusting armature supply by controller, go to offset using demagnetization magnetic potential caused by direct-axis current component in armature winding
Excitation magnetic potential caused by a part of permanent magnet, so as to reach the purpose for weakening main flux；Second, using composite excitation scheme, that is, exist
A direct-flow magnet exciting coil is further added by the basis of conventional permanent magnet motor, magnetomotive force caused by this DC coil is made more than base speed
For demagnetization magnetic potential, to reach the purpose for weakening magnetic flux.Although such scheme can reach the purpose for weakening magnetic flux, need to increase
Controller or direct-flow magnet exciting coil, can cause the increase of copper loss, and then cause system to be reduced in high velocity efficiency, and may
Cause permanent magnet irreversible demagnetization.
Therefore, the adjustable study hotspot for turning into machine field in recent years of air-gap field of magneto how is realized,
It is a kind of to realize that air-gap field is adjusted by changing permanent magnet magnetization level, it is referred to as variable flux permanent magnet electricity truly
Machine.Such motor is using high remanent magnetism, the permanent-magnet material of low-coercivity -- aluminium nickel cobalt, determined using DC pulse winding current or three-phase
D-axis armature magnetomotive force caused by sub- winding current controls its intensity of magnetization, and its level of magnetization can be remembered, so as to
The flexible modulation in air gap permanent magnet magnetic field is realized, under the premise of motor other performance indications are not sacrificed, realizes wide speed regulating range fortune
OK.
Southeast China University's woods crane cloud etc. proposes a kind of axial magnetic field stator partition type Magneticflux-switching type memory electrical machine, the motor
Though it can realize that motor gas-gap magnetic field is adjustable, the motor use only coercive by applying different electric currents on pulsed field magnetization winding
The relatively low Al-Ni-Co permanent magnet of power, the maximum air gap magnetic flux of motor are extremely difficult to the level of Nd-Fe-B permanent-magnet motor, motor
Energy index is not fully up to expectations；Or in order to obtain enough magnetic fluxs, it is necessary to use thicker permanent-magnet material, and increase magnetic and go
For magnetic magnetic flux further through the air gap of motor, it is larger that this results in required adjustable magnetic pulse magnetomotive force, increases coil volume.
The content of the invention
The purpose of this utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of axial magnetic field stator partition type
Magneto.
The purpose of this utility model is achieved through the following technical solutions：
A kind of axial magnetic field stator partition type magneto, including stator, rotor, threephase armature winding and pulsed field magnetization around
Group, the rotor have 2, are coaxially disposed respectively in the stator both sides, and the rotor coaxial of stator and both sides is arranged on installation axle
On, the stator, around being spliced to form, is folded with by one group of H type units stator core between adjacent H type unit stator cores
Al-Ni-Co permanent magnet；The extension of the H types unit stator core is stator tooth, and the threephase armature winding has 2 sets, respectively circle
It is around on the stator tooth of the stator side, the pulsed field magnetization winding head and the tail series connection circle is around on the Al-Ni-Co permanent magnet；Institute
Stating rotor includes rotor disk and Nd-Fe-B permanent magnet, and the Nd-Fe-B permanent magnet is fan-shaped strip, and each rotor disk is radially
It is pasted with the extremely alternate Nd-Fe-B permanent magnet of one group of axial charging, N poles S.In use, the arteries and veins by controlling pulsed field magnetization winding
Size of current and direction are rushed to adjust the magnetized state of Al-Ni-Co permanent magnet, so as to control magneto air gap resultant magnetic field
It is strong and weak.
In the further design of the utility model, the unit pitch of the laps circle of above-mentioned threephase armature winding is around in two neighboring
On the adjacent stator tooth of the H types unit stator core, a stator poles are formed, single Nd-Fe-B permanent magnetic on the rotor disk
Body forms a rotor pole, and the ratio between stator poles and rotor number of poles are 6:5,2 sets of threephase armature windings on the stator
Specular.
In the further design of the utility model, the rotor disk of said stator and rotor is permeability magnetic material silicon steel sheet system
Into.
In the further design of the utility model, the Al-Ni-Co permanent magnet cutting orientation magnetizing of said stator, adjacent aluminium
Nickel cobalt permanent magnet magnetization is in opposite direction.
In the further design of the utility model, above-mentioned threephase armature winding and pulsed field magnetization winding are using concentration
Winding type.
In the further design of the utility model, above-mentioned Nd-Fe-B permanent magnet is pasted on the rotor by anaerobic adhesive
Panel surface.Fan-shaped Nd-Fe-B permanent magnet is radial to be uniformly pasted onto on rotor disk.
In axial magnetic field stator partition type magneto of the present utility model, armature winding uses concentratred winding, armature
Winding is wrapped on the stator tooth of two adjacent H type unit stator cores, and Al-Ni-Co permanent magnet distributes alternately in phase into N, S pole
Among adjacent H types unit stator core, Exciting Windings for Transverse Differential Protection is wrapped on Al-Ni-Co permanent magnet, and rotor uses tray type structure, on rotor disk
Radial uniformly to place the extremely alternate Nd-Fe-B permanent magnet of N, S, stator is connected with rotor coaxial.The utility model improves electricity
The power density of machine, while Al-Ni-Co permanent magnet on-line control function is added, it is also equipped with wider rotating speed range of operation, fit
Associated drives occasion that is smaller, compact-sized, needing weak magnetism speed expansion is required for axial dimension.
The utility model has beneficial effect following prominent：
1. axial magnetic field stator partition type magneto of the present utility model, disc-type permanent magnet motor and memory electricity are concentrated
The advantages of machine, simultaneously, remains the characteristics of disc-type permanent magnet motor is compact-sized, leakage field is small on the utility model electric machine structure, manufacture
It is convenient, it is well suited for the occasion applied to slim installation, such as Aero-Space, electric automobile and field of wind power generation.
2. the whole motor overall structure of the utility model motor is simple.Because motor employs axial magnetic field stator permanent magnetic type
Structure, axial dimension is shorter, and Al-Ni-Co permanent magnet, pulse winding, armature winding are placed in stator, are easy to radiate, are cooled down.Turn
Nd-Fe-B permanent magnet has only been pasted on son.Stator uses H type unit stator core structures, can greatly simplify manufacturing process.
3. the threephase armature winding and pulsed field magnetization winding of motor of the present utility model use concentratred winding pattern, effectively
Ground reduces tip lengths, saves copper conductor material.
4. motor of the present utility model is using double rotor single stator structure, with respect to the motor of single rotor, output torque
Substantially increase.
4. permanent magnet uses surface-mount type structure on the rotor of the utility model motor, permanent magnet is pasted using anaerobic adhesive
It is easily manufactured in panel surface, the leakage field of motor is considerably reduced, improves the utilization rate of permanent magnet；Meanwhile surface-mount type is installed
Mode is advantageous to the radiating of motor permanent-magnet material, reduces heat waste, further improves the operational efficiency of motor.
Brief description of the drawings
Fig. 1 is the structural representation of axial magnetic field stator partition type magneto in embodiment；
Fig. 2 is magnetic flux path figure when Rated motor operation Al-Ni-Co permanent magnet magnetizes in embodiment；
Fig. 3 be in embodiment motor underloading or run at high speed Al-Ni-Co permanent magnet degaussing when magnetic flux path figure；
In figure, 1- stators, 2- rotors, 3- threephase armature windings, 4- pulsed field magnetization windings, 5-H type unit stator cores, 6-
Al-Ni-Co permanent magnet, 7- stator tooths, 8- rotor disks, 9- Nd-Fe-B permanent magnets.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
Embodiment
Referring to accompanying drawing 1, a kind of axial magnetic field stator partition type magneto, including stator 1, rotor 2, threephase armature winding
3 and pulsed field magnetization winding 4, rotor 2 have 2, be coaxially disposed determined in the both sides of stator 1, stator 1 by one group of 12 H type unit respectively
Sub- iron core 5 is spliced to form around stickup, and Al-Ni-Co permanent magnet 6 is folded between adjacent H type units stator core 5；Form double
The double air gaps disc-type permanent magnet motor of the intermediate stator 1 of rotor 2.The extension of H type units stator core 5 is stator tooth 7, threephase armature
Winding 3 has 2 sets, and circle is around on the stator tooth 7 of the both sides of stator 1 respectively, and the unit pitch of the laps circle of threephase armature winding 3 is around in adjacent two
On the adjacent stator tooth 7 of individual H types unit stator core 5, a stator poles are formed, single Nd-Fe-B permanent magnet 9 on rotor disk 8
Form a rotor pole, stator poles are 12 in the present embodiment, and rotor number of poles is 10, on stator 1 the 2 sets of threephase armatures in left and right around
3 speculars of group.The circle of connecting from beginning to end of pulsed field magnetization winding 4 is around on Al-Ni-Co permanent magnet 6；The Al-Ni-Co permanent magnet 6 of stator 1 is cut
To magnetizing, the adjacent direction of magnetization of Al-Ni-Co permanent magnet 6 is opposite.Threephase armature winding 3 and pulsed field magnetization winding 4 are using concentration
Winding type；Rotor 2 includes rotor disk 8 and Nd-Fe-B permanent magnet 9, and Nd-Fe-B permanent magnet 9 is fan-shaped strip, each rotor disk 8
Radially it is pasted with the extremely alternate Nd-Fe-B permanent magnet 9 of one group of axial charging, N poles S.Two symmetrical configurations of rotor 2, neodymium iron boron is forever
Magnet 9 is pasted on the surface of rotor disk 8 by anaerobic adhesive.The rotor disk 8 of stator 1 and rotor 2 is made up of permeability magnetic material silicon steel sheet.
The magneto operation principle of the present embodiment is as follows：
As shown in Fig. 2 when Rated motor is run, pass through the pulsed field magnetization winding 4 being wound on to circle on Al-Ni-Co permanent magnet 6
Apply positive nominal DC impulse magnetization electric current, Al-Ni-Co permanent magnet 6 has and keeps higher axial magnetized horizontal, now magnetic force
Line from Nd-Fe-B permanent magnet 9s, the air gap formed by the space by being formed between stator tooth 7 and rotor pole, stator tooth 7,
Al-Ni-Co permanent magnet 6, stator tooth 7, air gap, Nd-Fe-B permanent magnet 9, rotor disk 8, produce the air-gap field of maximum；
As shown in figure 3, when underloading or motor run at high speed, pass through the pulse being wound on to circle on Al-Ni-Co permanent magnet 6
Exciting Windings for Transverse Differential Protection 4 applies reverse DC pulse magnetizing current, reduces the level of magnetization of Al-Ni-Co permanent magnet 6, i.e. Al-Ni-Co permanent magnet 6
Caused magnetic flux is reduced, or even the magnetic of Al-Ni-Co permanent magnet 6 is reduced into zero, substantially reduces air-gap field.Therefore by applying not
Same DC pulse magnetizing current can improve motor weak magnetic ability and output-constant operation efficiency with on-line control air-gap field.
The utility model can make motor shaft be shortened to size, improve the power density of motor, and be provided simultaneously with wider
Rotating speed range of operation, and non-load air gap field is adjustable, is very suitable as high power, the wheel hub of high torque (HT) ability of electric automobile
Motor.
Above is preferred embodiment of the present utility model, all changes made according to technical solutions of the utility model are produced
Function without departing from technical solutions of the utility model scope when, belong to the scope of protection of the utility model.
Claims (6)
1. a kind of axial magnetic field stator partition type magneto, it is characterised in that including stator（1）, rotor（2）, threephase armature
Winding（3）With pulsed field magnetization winding（4）, the rotor（2）There are 2, be coaxially disposed respectively in the stator（1）Both sides, it is described
Stator（1）By one group of H type unit stator core（5）It surround and is spliced to form, adjacent H type unit stator cores（5）Between sandwiched
There is Al-Ni-Co permanent magnet（6）；The H types unit stator core（5）Extension be stator tooth（7）, the threephase armature winding
（3）There are 2 sets, circle is around in the stator respectively（1）The stator tooth of both sides（7）On, the pulsed field magnetization winding（4）Head and the tail series connection circle
It is around in the Al-Ni-Co permanent magnet（6）On；The rotor（2）Including rotor disk（8）And Nd-Fe-B permanent magnet（9）, the neodymium iron
Boron permanent magnet（9）For sector, each rotor disk（8）Radially it is pasted with the extremely alternate neodymium iron boron of one group of axial charging, N poles S
Permanent magnet（9）.
2. axial magnetic field stator partition type magneto according to claim 1, it is characterised in that the threephase armature around
Group（3）Unit pitch of the laps circle be around in the two neighboring H types unit stator core（5）Adjacent stator tooth（7）On, form one
Individual stator poles, the rotor disk（8）Upper single Nd-Fe-B permanent magnet（9）Form a rotor pole, stator poles and rotor number of poles
The ratio between be 6:5, the stator（1）On 2 sets of threephase armature windings（3）Specular.
3. axial magnetic field stator partition type magneto according to claim 1, it is characterised in that the stator（1）With
Rotor（2）Rotor disk（8）It is made up of permeability magnetic material silicon steel sheet.
4. axial magnetic field stator partition type magneto according to claim 1, it is characterised in that the stator（1）'s
Al-Ni-Co permanent magnet（6）Cutting orientation magnetizing, adjacent Al-Ni-Co permanent magnet（6）The direction of magnetization is opposite.
5. axial magnetic field stator partition type magneto according to claim 1, it is characterised in that the threephase armature around
Group（3）With pulsed field magnetization winding（4）Use concentratred winding pattern.
6. axial magnetic field stator partition type magneto according to claim 1, it is characterised in that the Nd-Fe-B permanent magnetic
Body（9）The rotor disk is pasted on by anaerobic adhesive（8）Surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944285.3U CN207010497U (en) | 2017-07-31 | 2017-07-31 | A kind of axial magnetic field stator partition type magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720944285.3U CN207010497U (en) | 2017-07-31 | 2017-07-31 | A kind of axial magnetic field stator partition type magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010497U true CN207010497U (en) | 2018-02-13 |
Family
ID=61456908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720944285.3U Expired - Fee Related CN207010497U (en) | 2017-07-31 | 2017-07-31 | A kind of axial magnetic field stator partition type magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010497U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276349A (en) * | 2017-07-31 | 2017-10-20 | 南京信息工程大学 | A kind of axial magnetic field stator partition type magneto |
| CN111884460A (en) * | 2020-07-21 | 2020-11-03 | 南京信息工程大学 | Axial magnetic flux hybrid excitation memory motor |
| CN111953163A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
-
2017
- 2017-07-31 CN CN201720944285.3U patent/CN207010497U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276349A (en) * | 2017-07-31 | 2017-10-20 | 南京信息工程大学 | A kind of axial magnetic field stator partition type magneto |
| CN111884460A (en) * | 2020-07-21 | 2020-11-03 | 南京信息工程大学 | Axial magnetic flux hybrid excitation memory motor |
| CN111953163A (en) * | 2020-08-11 | 2020-11-17 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
| CN111953163B (en) * | 2020-08-11 | 2023-07-14 | 哈尔滨工业大学 | Multiphase permanent magnet synchronous motor system and magnetic field adjusting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20190731 |