CN102624183A - Permanent-magnet axial-magnetic-field brushless motor and assembling method thereof - Google Patents
Permanent-magnet axial-magnetic-field brushless motor and assembling method thereof Download PDFInfo
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- CN102624183A CN102624183A CN2012100850740A CN201210085074A CN102624183A CN 102624183 A CN102624183 A CN 102624183A CN 2012100850740 A CN2012100850740 A CN 2012100850740A CN 201210085074 A CN201210085074 A CN 201210085074A CN 102624183 A CN102624183 A CN 102624183A
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Abstract
The invention discloses a permanent-magnet axial-magnetic-field brushless motor, which comprises a stator, a rotor, a lower end cap and an upper end cap, wherein the rotor is arranged at the center of the stator. The permanent-magnet axial-magnetic-field brushless motor is characterized in that the stator comprises a plurality of stator C-shaped iron cores and winding coils arranged on the iron cores; the rotor comprises a non-magnet-conductive rotor plate, a plurality of permanent magnets and a rotary shaft, the rotary shaft is arranged at the center of the non-magnet-conductive rotor plate, the permanent magnets are uniformly embedded on the circumference of the non-magnet-conductive rotor plate, the stator C-shaped iron cores are embedded in slots of the upper end cap and the lower end cap and circularly distributed on the circumference of the non-magnet-conductive rotor plate uniformly, and upper magnetic pole surfaces of the stator C-shaped iron cores correspond to the permanent magnets of the non-magnet-conductive rotor plate. The invention further discloses an assembling method of the motor. The permanent-magnet axial-magnetic-field brushless motor and the assembling method thereof have the advantages that electric load and magnetic load are set independently, the stator lamination iron cores are simple in manufacture, and coil magnetic loops formed by the stator windings are independent to each other. Besides, design difficulty of the motor is beneficially reduced, and manufacturing cost of the motor is reduced while performance of the motor is improved.
Description
Technical field
The present invention relates to a kind of motor, axial magnetic field permanent magnet brushless electric machine and assembly method that especially a kind of electric loading and magnetic loading can independently be provided with.
Background technology
Motor is the device that carries out power conversion between electric energy and the mechanical energy through electromagnetic induction at present, and the electric loading of motor and magnetic loading are one of two most important parameters in the motor, and its size not only has influence on the motor economy, more has influence on its performance.Choosing of general-purpose machine electromagnetic load conditions each other at present, and this has reduced undoubtedly, and motor is electric, the selection space of magnetic loading, has influence on motor economy and optimization in Properties.
The axial magnetic field permanent magnet brushless electric machine has the combination property advantage of motor in axial magnetic field and magneto concurrently, has efficient, high torque density, high power density, High Power Factor and the performance characteristics of high torque (HT)/moment of inertia and the design feature of brachmorphy disc type.The fractional-slot of a coil of cover concentrates winding construction in the axial magnetic field permanent magnet brushless electric machine of periphery winding space, to have huge superiority at interior all winding spaces in each tooth, has not only reduced winding overhang, has reduced resistance and the copper loss and the copper consumption of motor; Reduced motor yoke thickness unshakable in one's determination, and the electric loading of motor choose the restriction that does not receive the inner space, optimize favourable to motor properties; Moreover; Owing to have only a coil on each tooth, promptly after a certain coil is out of order, can only change this coil; But the magnetic circuit of each coil still intercouples, so this kind motor just has certain fault-tolerant ability.Single stator discs birotor dish axial magnetic field permanent magnet brushless electric machine (both sides rotor disk intermediate stator dish) and two stator discs single rotor dish axial magnetic field permanent magnet brushless electric machine (both sides stator discs center roller dish) are significant to reducing the pulsation of motor cogging torque and eliminating axial magnetic pull.All these methods have improved the performance of axial magnetic field permanent magnet brushless electric machine, have enlarged the application of this kind motor.
But general axial magnetic field permanent magnet brushless electric machine also has following defective at present: (1) motor electricity, choosing of magnetic loading condition each other, and this is that motor design, economy and optimization in Properties have been brought difficulty; (2) laminated core manufacturing process is complicated; (3) each winding is formed coil magnetic circuit not independently, so the fault-tolerant ability of motor is low.
At present, transverse flux permanent magnetic motor is at present uniquely a kind ofly can carry out the motor that electric loading and magnetic loading independently are provided with, this kind motor promptly can be common diameter to magnetic field permanent magnet brushless motor, also can be the axial magnetic field permanent magnet brushless electric machine.When the transverse magnetic flux pattern is applied to the axial magnetic field permanent magnet brushless electric machine, just obtained the axial magnetic field permanent magnet brushless electric machine that electricity, magnetic loading independently are provided with.But the leakage field that transverse flux motor is very big, very complicated stator core and rotor magnet structure make it be difficult to obtain practical application, and transverse magnetic flux axial magnetic field permanent magnet brushless electric machine particularly not only is not applied but also seldom relates to.
Summary of the invention
The objective of the invention is for overcoming the deficiency of above-mentioned prior art; The axial magnetic field permanent magnet brushless electric machine and the assembly method of a kind of new structure and principle are provided; It has that electricity, magnetic loading independently are provided with, stator lasmination is unshakable in one's determination makes simple and stator winding is respectively formed coil magnetic circuit advantage independently mutually, the manufacturing cost that helps reducing the motor design difficulty, reduce motor, improves motor properties.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
A kind of axial magnetic field permanent magnet brushless electric machine comprises stator, rotor, bottom end cover and upper end cover, and rotor is positioned at stator center, and stator comprises several stators C sections heart and winding coil provided thereon; Rotor comprises not magnetic conduction rotor disk, permanent magnet and rotating shaft, and rotating shaft is not equipped with at magnetic conduction rotor disk center, and magnetic conduction rotor disk circumferential edge evenly is not embedded with some permanent magnets, and several stators C sections heart is embedded in the groove of upper and lower end cap; Some stator C sections heart uniform ring are around being distributed in not magnetic conduction rotor disk circumference; And the going up of the stator C sections heart, magnetic pole strength are corresponding with the permanent magnet of magnetic conduction rotor disk not, just in time align with the magnetic field of rotor permanent magnet generation with the magnetic field that guarantees to produce behind the stator C sections coil electricity in the heart.
The said stator C sections heart adopts laminated core to be overrided to form, and perhaps adopts the monoblock permeability magnetic material to constitute; When adopting laminated core, cross sectional shape is identical everywhere all is rectangle for the stator C sections heart, and sectional area is all identical; When adopting the monoblock permeability magnetic material, stator C sections heart cross sectional shape and sectional area everywhere is inequality;
Said each stator C sections heart is according to different 5 parts that are divided into the position of effect; The opposite that is C type opening is that two parts up and down of pole body, the stator C sections heart are respectively utmost point yoke and following utmost point yoke; C type opening part two parts up and down is last magnetic pole and lower magnetic pole, and all with not the magnetic conduction rotor disk is relative for lower magnetic pole face and last magnetic pole strength.
Said each stator C sections all has a winding coil in the heart; Perhaps a stator C sections heart is placed a winding coil at interval; Winding coil is positioned over the pole body position of the stator C sections heart; Perhaps a stator C sections winding coil in the heart is divided into two parts, is positioned over respectively on the last lower magnetic pole of the stator C sections heart; The symmetrical winding of m of all winding coils composition stator in series or in parallel with each other, m is a natural number.
Said stator C sections winding coil in the heart is formed coil or non-formed coil; If each stator C sections is placed a formed coil in the heart, then when making the stator C sections heart, with stator C sections heart separated into two parts, again formed coil is inserted in the pole body of the stator C sections heart after, again two parts iron core is shaped to the stator C sections heart; When adopting non-formed coil, then directly make the one-piece stator C sections heart, with non-formed coil embedding on the pole body of the stator C sections heart; If place winding coil respectively on the last lower magnetic pole of the stator C sections heart, then no matter adopting formed coil also is non-formed coil, all is to make the one-piece stator C sections heart.
The not magnetic conduction rotor disk of said rotor is a disc, on its same circumference, evenly opens several trough, and the permanent magnet that placement is magnetized vertically in the said several trough, polarity is arranged is formed the rotor permanent magnetism magnetic pole.
Said rotor permanent magnet center line and stator C sections are in the heart, the lower magnetic pole position of center line aligns.
Said stator C sections heart piece number, stator winding number of phases m and rotor magnet number satisfy the relation between conventional motor stator slot number, the winding number of phases and the number of poles.
Described upper end cover and bottom end cover are identical; The bearing that joins with armature spindle is placed at the integrated disc portions center of upper and lower end cap; The cylindrical portions may of upper and lower end cap is evenly left the groove with the upper and lower utmost point yoke of stator C sections heart same size at side, covers in order to the upper and lower utmost point yoke of the stator C sections heart is mounted on upper and lower end.
A kind of assembly method of axial magnetic field permanent magnet brushless electric machine; At first some winding coils are positioned over some stator C sections respectively in the heart; The mode of simultaneously some permanent magnets alternately being arranged according to N, S installs to rotor not on the magnetic conduction rotor disk, machine shaft is installed to not on the magnetic conduction rotor disk again;
Then the bottom end cover of motor is installed to an end of machine shaft, like this motor bottom end cover and motor not the relative position of magnetic conduction rotor disk fix;
Following utmost point yoke with all stator C sections hearts is installed in the equally distributed groove in bottom end cover side again;
Upper end cover is installed to the other end of machine shaft, and the equally distributed groove in upper end cover side just in time is stuck in the last utmost point yoke of the stator C sections heart, and is last, places a casing as required, and two end caps are fixed together up and down.
The rotor number of poles 2p of the size of motor torque ripple and motor, stator C sections heart piece counts Ns and number of phases m is relevant; 2p, Ns, m bigger (p, Ns, m are natural number); The torque pulsation of motor is just more little, so motor of the present invention can be through increasing the diameter of disc rotor motor, when keeping the size constancy of the permanent magnet and the stator C sections heart; Reaching increases the purpose that permanent magnet number of poles 2p, stator C sections heart piece count Ns and number of phases m, thereby reduces the torque pulsation of motor.
The electric loading of motor and magnetic loading are very big to the motor performance influence, and in common electric machine, the groove area of placing coil is relevant with the electric loading of motor; Groove area is big more, and electric loading is also just big more, and toothed area is relevant with magnetic loading; The big more magnetic loading of toothed area is also just big more; Obviously the grooved area restricts with toothed area each other, and therefore electric, magnetic loading conditions each other, one big another must be little.In the motor of the present invention; The window area of placing coil can increase arbitrarily or dwindle, and descend the sectional area of the utmost point irrelevant in the heart with the C sections, so motor of the present invention is electric, magnetic loading does not have restricting relation; Can independently be provided with, this brings great convenience to design of electrical motor and optimal design.
The iron circuit of motor is different with common electric machine, and motor magnetic circuit of the present invention is the C sections heart, and iron circuit is very short, so the core loss of motor is very low.
Can find out that each coil magnetic circuit is not contact on magnetic, also is independent of each other on the electricity if do not consider being connected between the every phase of each coil; Therefore motor has very strong fault-tolerant ability; Wherein one being out of order mutually of motor can be excised this phase, other each mutually can operate as normal.Through increasing the number of phases of motor, to excise the performance impact of rear motor mutually little thereby guarantee one, so motor of the present invention has very strong fault-tolerant ability.If the fault of coil short of motor or insulation aspect can only be changed this coil and get final product, do not influence other coils, this maintenance to motor is favourable.
If laminated core is adopted in common disc type electric machine stator core, special manufacturing process must be arranged, this electric machine stator iron is made very simple, with low cost.Motor coil of the present invention is all identical, makes simply, and can be that formed coil can not be a formed coil also.
This motor is the same with common double stator discs single rotor dish axial magnetic field permanent magnet motor; The rotor disk main material is a non-magnet_conductible material; Can adopt aluminium; Reduced motor quality and moment of inertia, and when rotor disk is big, can further reduce the quality and the moment of inertia of disc rotor motor the mode of its even perforate.
Operation principle of the present invention is: motor of the present invention can be used as the sine wave permanent magnet brushless electric machine; The symmetrical winding of m of the stator 2p utmost point of Ns or Ns/2 coil composition feeds the symmetrical alternating current of m at this moment; Will between disc rotor motor and stator C sections heart pole-face, produce 2p utmost point rotating magnetic field; That the magnet of the rotor 2p utmost point also can produce is identical with this magnetic field number of poles, rotation direction and all identical rotating magnetic field of velocity of rotation, and these two magnetic field interactions just can carry out Conversion of energy, when electric energy becomes mechanical energy; Motor of the present invention is used as motor, and motor of the present invention was used as generator when mechanical energy became electric energy.Motor of the present invention also can be used as the square wave permanent magnetic brushless electric machine; At this moment; The m phase current is 120 ° of square wave currents of symmetry; The symmetrical winding of m produces the trapezoidal wave Permanent Magnet and Electric kinetic potential of 120 ° of flat-top width under the effect of rotor permanent magnetic field, this square wave current and trapezoidal wave electromotive force interact and produce electromagnetic power, and carry out power conversion.
The invention has the beneficial effects as follows:
(1) the motor magnetic circuit is by the stator C sections heart, two air gaps with rotor disk is thick forms, and is irrelevant with root diameter, therefore can increase motor pole number, stator C core number or the number of phases through increasing the rotor disk external diameter, helps reducing the cogging torque pulsation of motor;
(2) iron circuit includes only the very short stator C sections heart in path, has very low iron loss;
Therefore (3) torque is the product of electromagnetic force and radius, under the constant prerequisite of other physical dimensions, can only just can increase the torque of motor through increasing the rotor disk diameter; Simultaneously, choosing with magnetic loading of electric loading is irrelevant, and can improve motor torque, power and reduce copper loss through increasing the conductor wire gauge, and to not influence of magnetic circuit;
(4) all stator C sections hearts are separate on magnetic, and on electricity, if do not consider that the connection between every phase also is independent of each other, so this motor has very strong fault-tolerant ability;
(5) all stator C sections hearts are all identical with coil, make simple; Particularly, as the action principle of motor in axial magnetic field, do not need the complicated laminated core manufacture craft of common disc type electric machine;
(6) the rotor disk material is a non-magnet_conductible material, can adopt aluminium, has reduced the quality and the moment of inertia of motor, and can adopt quality and the moment of inertia that the mode of the even borehole of rotor disk is further reduced motor.
Description of drawings
Fig. 1 is 3 phases, the 12 stator C sections hearts, 10 rotor permanent magnetism magnetic pole motor sketch mapes;
Fig. 2 is 12 stator C sections hearts, 12 coil position structure charts;
Fig. 3 is the integral rotor sketch map;
Fig. 4 is a stator C sections heart sketch map;
Fig. 5 is a stator C sections heart part sketch map;
The stator C sections heart sketch map that Fig. 6 is made up of laminated core;
Fig. 7 be the stator C sections heart and on a stator coil sketch map;
Fig. 8 is the stator C sections heart and two coil sketch mapes on it;
Fig. 9 be rotor not magnetic conductive disk and on permanent magnet;
Figure 10 is end cover structure figure;
Figure 11 is the installation diagram of integral rotor dish and bottom end cover;
Among the figure, 1 is the stator C sections heart, and 2 is winding coil, and 3 is bottom end cover, and 4 is upper end cover; 5 is not magnetic conductive disk of rotor, and 6 is rotor permanent magnet, and 7 are rotating shaft, and 11 is pole body, and 12 are following utmost point yoke; 13 is last utmost point yoke, and 14 is lower magnetic pole (the following utmost point), and 15 is last magnetic pole (going up the utmost point), and 21 is lower coil, and 22 is last coil.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
A kind of novel axial magnetic field permanent magnetic brushless is made up of stator and rotor, stator by Ns the stator C sections heart 1 and on winding coil 2, bottom end cover 3 and upper end cover 4 constitute; Rotor is by magnetic conduction rotor disk 5, permanent magnet 6 and rotating shaft 7 do not constitute.Fig. 1 is the 3 12 stator C sections heart 10 rotor permanent magnetism magnetic poles electric machine structure sketch mapes of the present invention mutually, expression for ease, and just the bottom end cover 3 with motor is buckled together with the stator C sections heart 1, and the stator C sections that the upper end cover 4 of motor is not buckled in motor is in the heart.Fig. 2 is 12 stator C of motor sections heart and the positional structure sketch map of going up coil thereof, and Fig. 3 is an integral rotor dish sketch map.
The stator C sections heart 1 is as shown in Figure 4, the stator C sections heart 1 according to the effect of each part different with the position be divided into pole body 11, down utmost point yoke 12, go up utmost point yoke 13, lower magnetic pole (being called for short the utmost point down) 14 and last magnetic pole (utmost point on the abbreviation) 15, as shown in Figure 5.The stator C sections heart 1 can be overrided to form by the lamination magnetic conductive iron, lamination as shown in Figure 6 laminate direction, also can constitute by whole permeability magnetic material.If adopt laminated core to be overrided to form, then stator C sections heart each several part cross sectional shape is identical, all be rectangle, and sectional area is all identical; If constitute by whole permeability magnetic material, then descend utmost point yoke 12 identical with last utmost point yoke 13 cross sectional shapes and sectional area is identical, the following utmost point 14 is identical with the last utmost point 15 cross sectional shapes and sectional area is identical, but they can have different cross sectional shapes and sectional area with fuselage 11.
Below with a coil explanation shown in Figure 7.
The main part of forming motor stator by all Ns the stator C sections hearts 1 and the winding coil 2 on it; 12 stator C sections hearts 1 as shown in Figure 2 and on 12 winding coils 2; Each winding coil 2 composition respective rotor permanent magnetism magnetic poles in series or in parallel with each other are counted the symmetrical winding of m of 2p, satisfy the relation between number of stator slots, number of poles and the number of phases in the common permanent magnetic brushless between 1 number Ns of the stator C sections heart, rotor magnetic pole number 2p and the stator number of phases m three.Owing to can adopt two layer winding also can adopt single layer winding in the motor stator slot usually, therefore can place winding coil 2 at interval in the heart at stator C sections of the present invention, that is to say that Ns the stator C sections heart has only Ns/2 winding coil 2.Be 12 stator C sections hearts among Fig. 2, each stator C sections heart is all placed a winding coil 2, and corresponding 10 rotor permanent magnetism magnetic poles of 2,12 winding coils of totally 12 winding coils 2 rearrange 3 symmetrical windings according to the winding of common motor; Can place a winding coil 2 by the stator C sections heart in interval among Fig. 2, therefore have only 6 winding coils 2, these 6 winding coils 2 to interconnect the 3 symmetrical windings of forming corresponding 10 rotor permanent magnetism magnetic poles.
Do not form by magnetic conductive disk 5, permanent magnet 6 and rotating shaft by rotor for rotor.Evenly open even bin at the periphery of magnetic conductive disk 5 not,, be used as permanent magnetism magnetic pole in order to place permanent magnet 6.Permanent magnet magnetizes vertically, and pole polarity is staggered, the rotor disk with 10 permanent magnetism magnetic poles as shown in Figure 9, and the polarity of 10 permanent magnetism magnetic poles is that N, S are staggered.The rotor integral disc of 10 permanent magnetism magnetic poles is as shown in Figure 3.Because the rotor integral disc need be placed into all the stator C sections heart 1 inside, and permanent magnet 6 aligns with the following utmost point 12 of the stator C sections heart 1 and the pole-face of the last utmost point 13, therefore when making the permanent magnet trough of rotor disk, needs to guarantee the position of fluting.
Figure 10 is the shape of end cap; Bottom end cover 3 is identical with upper end cover 4; At one of which side discs center drilling, be used for fixing with rotating shaft 7, the opposite side annulus is evenly slotted; Insert the location and the fixed stator C sections heart 1 (the following utmost point yoke of the stator C sections heart inserts in the bottom end cover corresponding groove, and the last utmost point yoke of the stator C sections heart inserts in the corresponding groove of upper end cover) in this groove in order to utmost point yoke with the stator C sections heart 1.End cap among Figure 10 is used for 12 stator C sections electrocardiographs, so end cap annulus side evenly has 12 grooves with stator C sections heart utmost point yoke same size.
Motor is when assembling; At first Ns winding coil 2 is positioned over respectively on Ns the stator C sections heart 1; Or Ns/2 winding coil 2 be placed on Ns the stator C sections heart 1 at interval; The mode of simultaneously 2p piece permanent magnet 6 alternately being arranged according to N, S installs to rotor not on the magnetic conductive disk 5, again machine shaft 7 is installed to rotor not on the magnetic conductive disk 5.Then the bottom end cover 3 of motor is installed to an end of machine shaft 7, like this motor bottom end cover 3 and rotor not the relative position of magnetic conductive disk 5 fix.Following utmost point yoke 12 with all stator C sections hearts 1 is installed in the equally distributed groove in bottom end cover 3 sides again.Then upper end cover 4 is installed to the other end of machine shaft 7, the equally distributed groove in upper end cover 4 sides just in time is stuck on the last utmost point yoke 13 of the stator C sections heart 1, and is last, can place a casing as required, and two end caps are fixed together up and down.
Though the above-mentioned accompanying drawing specific embodiments of the invention that combines is described; But be not restriction to protection range of the present invention; One of ordinary skill in the art should be understood that; On the basis of technical scheme of the present invention, those skilled in the art need not pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (10)
1. an axial magnetic field permanent magnet brushless electric machine comprises stator, rotor, bottom end cover and upper end cover, and rotor is positioned at stator center, it is characterized in that, stator comprises several stators C sections heart and winding coil provided thereon; Rotor comprises not magnetic conduction rotor disk, permanent magnet and rotating shaft, and rotating shaft is not equipped with at magnetic conduction rotor disk center, and magnetic conduction rotor disk circumferential edge evenly is not embedded with some permanent magnets, and several stators C sections heart is embedded in the groove of upper and lower end cap; Some stator C sections heart uniform ring are around being distributed in not magnetic conduction rotor disk circumference, and the going up of the stator C sections heart, magnetic pole strength are corresponding with the permanent magnet of magnetic conduction rotor disk not.
2. axial magnetic field permanent magnet brushless electric machine as claimed in claim 1 is characterized in that, the said stator C sections heart adopts laminated core to be overrided to form, and perhaps adopts the monoblock permeability magnetic material to constitute; When adopting laminated core, cross sectional shape is identical everywhere all is rectangle for the stator C sections heart, and sectional area is all identical; When adopting the monoblock permeability magnetic material, stator C sections heart cross sectional shape and sectional area everywhere is inequality.
3. according to claim 1 or claim 2 axial magnetic field permanent magnet brushless electric machine; It is characterized in that; Said each stator C sections heart is according to different 5 parts that are divided into the position of effect; The opposite that is C type opening is that two parts up and down of pole body, the stator C sections heart are respectively down utmost point yoke and last utmost point yoke, and C type opening part two parts up and down is lower magnetic pole and last magnetic pole, and all with not the magnetic conduction rotor disk is relative for lower magnetic pole face and last magnetic pole strength.
4. axial magnetic field permanent magnet brushless electric machine as claimed in claim 3; It is characterized in that; Said each stator C sections all has a winding coil in the heart, and perhaps a stator C sections heart is placed a winding coil at interval, and winding coil is positioned over the pole body position of the stator C sections heart; Perhaps a stator C sections winding coil in the heart is divided into two parts, is positioned over respectively on the last lower magnetic pole of the stator C sections heart; The symmetrical winding of m of all winding coils composition stator in series or in parallel with each other, m is a natural number.
5. axial magnetic field permanent magnet brushless electric machine as claimed in claim 4 is characterized in that, said stator C sections winding coil in the heart is formed coil or non-formed coil; If each stator C sections is placed a formed coil in the heart, then when making the stator C sections heart,, behind the pole body that formed coil is inserted in the stator C sections heart, again two parts iron core is shaped to the stator C sections heart with stator C sections heart separated into two parts; When adopting non-formed coil, then directly make the one-piece stator C sections heart, with non-formed coil embedding on the pole body of the stator C sections heart; If place winding coil respectively on the last lower magnetic pole of the stator C sections heart, then no matter adopting formed coil also is non-formed coil, all is to make the one-piece stator C sections heart.
6. axial magnetic field permanent magnet brushless electric machine as claimed in claim 5; It is characterized in that; The not magnetic conduction rotor disk of said rotor is a disc; On its same circumference, evenly open several trough, the permanent magnet that placement is magnetized vertically in the said several trough, polarity is arranged is formed the rotor permanent magnetism magnetic pole.
7. axial magnetic field permanent magnet brushless electric machine as claimed in claim 6 is characterized in that, said rotor permanent magnet center line and stator C sections are in the heart, the lower magnetic pole position of center line aligns.
8. axial magnetic field permanent magnet brushless electric machine as claimed in claim 7 is characterized in that, said stator C sections heart piece number, stator winding number of phases m and rotor magnet number satisfy the relation between conventional motor stator slot number, the winding number of phases and the number of poles.
9. axial magnetic field permanent magnet brushless electric machine as claimed in claim 1; It is characterized in that; Described upper end cover and bottom end cover are identical; The integrated disc portions center of upper and lower end cap is placed the bearing that joins with armature spindle is installed, and the cylindrical portions may of upper and lower end cap is evenly left the groove with the upper and lower utmost point yoke of stator C sections heart same size at side, covers in order to the upper and lower utmost point yoke of the stator C sections heart is mounted on upper and lower end.
10. the assembly method of each described axial magnetic field permanent magnet brushless electric machine of claim 1-9 is characterized in that step is following:
At first some winding coils are positioned over some stator C sections respectively in the heart, the mode of simultaneously some permanent magnets alternately being arranged according to N, S installs to rotor not on the magnetic conduction rotor disk, machine shaft is installed to not on the magnetic conduction rotor disk again;
Then the bottom end cover of motor is installed to an end of machine shaft, like this motor bottom end cover and motor not the relative position of magnetic conduction rotor disk fix;
Following utmost point yoke with all stator C sections hearts is installed in the equally distributed groove in bottom end cover side again;
Upper end cover is installed to the other end of machine shaft, and the equally distributed groove in upper end cover side just in time is stuck in the last utmost point yoke of the stator C sections heart, and is last, places a casing as required, and two end caps are fixed together up and down.
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| WO2015074571A1 (en) * | 2013-11-20 | 2015-05-28 | 戴珊珊 | Ac permanent-magnet switched reluctance electric motor |
| CN104917306A (en) * | 2015-06-25 | 2015-09-16 | 高屋电磁技术(深圳)有限公司 | Motor with independent magnetic pole |
| CN106921228A (en) * | 2017-04-19 | 2017-07-04 | 山东大学 | A kind of stator, the manufacture method of stator and permanent magnetic brushless |
| CN108736602A (en) * | 2017-04-14 | 2018-11-02 | 台达电子工业股份有限公司 | Axial-flux electric machine |
| CN109818434A (en) * | 2017-11-21 | 2019-05-28 | 波特斯卡普印度Pvt有限公司 | Disc magnetic motor with special pole form |
| CN110635641A (en) * | 2019-09-24 | 2019-12-31 | 哈尔滨工业大学 | Axial magnetic field reverse salient pole permanent magnet synchronous motor |
| CN111064335A (en) * | 2020-01-02 | 2020-04-24 | 东南大学 | E-shaped double-winding stator axial flux motor made of amorphous material |
| CN111106696A (en) * | 2019-12-06 | 2020-05-05 | 广东沃顿科技有限公司 | Longitudinal mixed reluctance motor |
| CN113364162A (en) * | 2021-06-21 | 2021-09-07 | 湖州小为科技有限公司 | Stator structure, rotor structure, ultrathin motor and stator forming process |
| CN116260302A (en) * | 2023-05-15 | 2023-06-13 | 湖南大学 | Permanent magnet synchronous motor with axial-transverse mixed magnetic flux |
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Application publication date: 20120801 |