CN109274240A - Compound amorphous alloy axial-flux electric machine - Google Patents
Compound amorphous alloy axial-flux electric machine Download PDFInfo
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- CN109274240A CN109274240A CN201811157231.8A CN201811157231A CN109274240A CN 109274240 A CN109274240 A CN 109274240A CN 201811157231 A CN201811157231 A CN 201811157231A CN 109274240 A CN109274240 A CN 109274240A
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- stator
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- soft magnetism
- permanent magnet
- amorphous alloy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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- 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
- H02K1/2793—Rotors axially facing stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A kind of compound amorphous alloy axial-flux electric machine, multiple interior teeth portions of stator and outer toothed portion is circumferentially uniform is distributed in stator yoke, stator core is embedded in casing, DC excitation winding is wrapped in outer toothed portion, each outer toothed portion and on the inside of it interior teeth portion is integrally also wound with armature winding, rotor is assemblied in shaft, permanent magnet and the first soft magnetism are extremely circumferentially uniformly mounted on rotor yoke close to the side of stator, permanent magnet contacts with each other with the first soft magnetism pole, permanent magnet and the first soft magnetism pole are corresponding with the circumferential position of interior teeth portion, second soft magnetism pole is corresponding with the circumferential position of outer toothed portion, second soft magnetism pole and its week, permanent magnet inwardly every magnetic region by being isolated, end cap is respectively equipped at the both ends of casing, the shaft of motor is by bearing support in the center of end cap.The power density that the present invention can not only inherit axial flux permanent magnet motor is big, torque density is big, the various features such as high-efficient, but also has many advantages, such as that electro-magnetic motor air-gap field is smoothly adjustable.
Description
Technical field
The invention belongs to axial-flux electric machine fields, relate generally to a kind of compound amorphous alloy axial-flux electric machine.
Background technique
Amorphous alloy strips only have 0.02-0.03mm as a kind of novel soft magnetic materials, thickness of strip, have excellent
Electromagnetic performance, good corrosion resistance, wearability, the characteristics such as high intensity, hardness and resistivity.Compared with traditional silicon steel sheet,
Amorphous alloy has minimum core loss, applied to the efficiency that can significantly improve motor in motor as core material, especially
It is suitable for high-speed high frequency applications.What traditional amorphous alloy axial flux permanent magnet synchronous motor used is all with permanent magnetism
The bimorph transducer single rotor or double rotor single stator structure of body surface mounted (or in permanent magnet insertion nonmagnetic metal disk), such motor
Have the advantages that high efficiency, high power density, high torque density.But due to the inherent characteristic of permanent-magnet material, amorphous alloy axis
Into flux permanent magnet synchronous motor, air-gap field is held essentially constant, and traditional amorphous alloy axial-flux electric machine is generally adopted more
With above-mentioned surface-mount type field structure, the air gap of this structure is big, inductance is small, ac-dc axis inductance is of substantially equal, and there is encourage for motor
The problems such as magnetically condition is difficult, weak-magnetic speed-regulating range is narrow, permanent magnet dosage is relatively large have become and restrict motor hair
One of bottleneck of exhibition.So that the application of amorphous alloy axial flux permanent magnet synchronous motor has received very big constraint.
In order to pursue the effect that high power torque density, high efficiency and the magnetic field of motor can control, many researchers
The variety classes topological structure using composite excitation form is proposed to solve traditional permanent magnet synchronous motor magnetic field and be difficult to adjust, no
The problems such as conducive to weak magnetism speed expansion, but still have the defects that different degrees of:
(1) Chinese patent CN105305749A proposes a kind of stator non iron-core Halbach permanent magnet array axial-flux electric machine.Its
There are two p-m rotor, two p-m rotors to be mounted in shaft in the opposite mode of permanent magnetism dignity for tool, and one is installed between rotor
The annulus of a synthesis of polymer material；The annulus tow sides circumferencial direction of synthesis of polymer material is regular to be provided with radial direction
Guide groove, for installing the stator winding coil of excitation wire；P-m rotor by rotor magnetic conduction back yoke segmentation set of permanent magnets at: it is each pair of
Extremely lower 12 pieces of installation is magnetized the different permanent magnets of aspect, is 0 degree in terms of defining first piece of permanent magnet axial charging, it is adjacent forever
The magnetizing direction of magnet successively changes 30 degree, to realize a kind of Halbach array.The characteristics of invention, is: by will be axial
Permanent magnet on flux electric machine rotor magnetizes according to Halbach array, from the very significantly upper harmonic content for reducing air gap flux density,
But the structure process is complicated and permanent magnet consumption is relatively more, is unfavorable for promoting production.
(2) Chinese patent CN103997145A proposes a kind of axial flux permanent magnet synchronous motor.The motor includes one
Shaft, rotor are assembled in shaft, at least one permanent magnet is assembled on rotor, further include stator module, and stator module includes
Towards the stator modules of an axial direction, each stator modules include a pair of stator tooth being connected by a yoke part and multiple
Winding, each winding are wound on a stator modules.The characteristics of invention is: axial-flux electric machine uses inexpensive ferrite
Magnet, and reach other higher power densities and efficiency for reaching using the neodymium iron boron of higher cost, and without generating tooth
Slot torque, vibration noise all decrease, but the motor is difficult to play its advantage in high-frequency high-speed occasion.
(3) Chinese patent CN10530757A proposes that a kind of topological structure of double cross mistake mixed excitation electric machine, the motor include
Drive end bearing bracket, rear end cap and casing, shaft are equipped with rotor yoke, the intrinsic pole permanent magnetism N, the pole permanent magnetism S and iron pole on rotor yoke, on casing
Be uniformly provided with armature core and field core, there is exchange armature winding on armature core, field core be equipped with AC excitation around
Group；Shaft, rotor yoke, the pole permanent magnetism N, the pole permanent magnetism S and iron pole constitute rotor；Exchange armature winding, armature core, AC excitation around
Group, field core and casing constitute stator.The characteristics of invention is: the motor is a kind of structure of radial flux, using exchange
Current regulation air-gap flux, excitation magnetomotive force and armature magnetomotive force are parallel relationship, change sense by adjusting the distribution of magnetic flux
The size for answering potential can realize broader speed adjustable range in variable speed power occasion, but the motor manufacturing technology is complicated, uncomfortable
Close the occasion applied in high-frequency high-speed.
(4) Chinese patent CN104638792A proposes a kind of topological structure of mixed excitation electric machine.The motor includes fixed
Son and the rotor being set in stator, rotor include constituting the rotor rack of the main support portion of the rotor and being set on rotor rack
Magnet steel and excitation winding, rotor rack horizontal interface even circumferential is provided with several motor poles, is provided between adjacent motor pole
The first magnet steel being made of permanent magnet, motor is extremely interior to be provided with the second magnet steel being made of permanent magnet and excitation winding；First magnetic
The magnetic pole of steel and the second magnet steel close to one end of rotor circumference is identical, and the volume of the first magnet steel is greater than the second magnet steel.The invention
Feature is；So that motor has biggish speed adjustable range and less rare earth usage amount, old of manufacture is reduced, but the motor
Torque density, power density and efficiency all declined and be unfavorable for applying in high-frequency high-speed occasion.
(5) it is synchronous to propose a kind of stator partition type axial magnetic flux switching type mixed excitation by Chinese patent CN103490583A
Motor topology, the motor stator are spliced into the concentric loop of two windings by inside and outside two layers " H " type unit stator core, every
Magnet ring separates two concentric loops, and armature winding uses concentratred winding, and it is fixed that armature winding is wrapped in two adjacent " H " type units
On the stator tooth of sub- iron core, permanent magnet and stator slot are all made of rectangle structure, and excitation bracket is located at permanent magnet surface, by every
Magnet ring separates, and excitation winding is axially wrapped on excitation bracket, and rotor uses tray type structure, including rotor rim and at radial
It is uniformly fixed on the rotor pole on its surface, stator is connected with rotor coaxial.Stator is divided by inside and outside two parts using magnetism-isolating loop.
The characteristics of invention is: electrical excitation magnetic circuit is completely in parallel with magnetic circuit, and the two flux coupled is reduced, and substantially increases permanent magnetism
Body utilization rate, electric efficiency are improved significantly.But the torque density of the motor, power density and efficiency are all declined,
And vibration noise expansion speed is limited in scope, and does not utilize the occasion applied in high-frequency high-speed.
(6) Chinese patent CN1808846A proposes a kind of dual-feeding mixed excitation axial magnetic field magento motor topology knot
Structure.The motor includes a rotor and the stator of left and right two for being placed in rotor two sides, and the magnetic pole of rotor is by magnetic region is divided into
Outer two circle, outer ring are iron core pole, and inner ring is the permanent magnet of alternating polarity；The inside installation magnetic field control of the external tooth of two stator cores
Winding processed, and armature main winding is installed around inside and outside tooth.The characteristics of invention, is: by changing the electricity in the control winding of magnetic field
Amplitude and direction are flowed to adjust motor gas-gap total magnetic flux size, achieve the purpose that change induced potential size, but the structure is electric
Machine permanent magnet dosage is big, and the range of weak magnetism speed expansion is than relatively limited.
Summary of the invention
Goal of the invention
Air-gap field is held essentially constant in axial flux permanent magnet synchronous motor, and air gap is larger, and the number of turns that is often connected in series is smaller, no
Conducive to weak magnetism speed expansion.In order to realize the simple and flexible of axial flux permanent magnet synchronous motor air-gap field, cost-effective tune
Section, so as to improve electric machine speed regulation and driveability, avoids the occurrence of permanent magnet and irreversible demagnetization occurs, thus introduce one with control
The compound amorphous alloy axial-flux electric machine of kind.
Technical solution
A kind of compound amorphous alloy axial-flux electric machine, including stator, casing, end cap, shaft, bearing and rotor, feature
Be: the stator core is amorphous alloy stator core, and stator core includes two parts of stator yoke and stator teeth, fixed
Sub- teeth portion is made of interior teeth portion and outer toothed portion, multiple interior teeth portions and outer toothed portion is circumferentially uniform is distributed in stator yoke, each
There is an interior teeth portion in the inside of outer toothed portion, and stator core is embedded in casing, and DC excitation winding is wrapped in outer toothed portion, and
First insulator is provided between DC excitation winding and outer toothed portion, each outer toothed portion and on the inside of it interior teeth portion is integrally gone back
It is wound with armature winding, the 4th insulator is set between armature winding and its internal DC excitation winding, rotor, which is assemblied in, to be turned
On axis, rotor includes rotor yoke, rotor field spider, the second soft magnetism pole, permanent magnet and the first soft magnetism pole, the second soft magnetism pole, permanent magnet
With the first soft magnetism is extremely circumferential is uniformly mounted on rotor yoke close to the side of stator, the inside of each second soft magnetism pole have one forever
There are a first soft magnetism pole in magnet, the inside of each permanent magnet, and permanent magnet contacts with each other with the first soft magnetism pole, permanent magnet and
One soft magnetism pole is corresponding with the circumferential position of interior teeth portion, and the second soft magnetism pole is corresponding with the circumferential position of outer toothed portion, the second soft magnetism
Pole and its week, permanent magnet inwardly was respectively equipped with end cap at the both ends of casing, the shaft of motor is logical by being isolated every magnetic region
Bearing support is crossed in the center of end cap.
The stator teeth is located at the two sides of stator yoke, and stator core two sides are all equipped with rotor, and rotor yoke uses soft magnetism
Material, the respective permanent magnet pole position face of two sides rotor and polarity is different form a kind of axis of single stator and double-rotor structure
To flux electric machine, armature winding and DC excitation winding are arranged in a ring on sagittal plane, and have non-overlapping, two sets of electricity
Pivot winding and DC excitation winding are being axially full symmetric.
The stator core is that amorphous alloy strips are entwined, and the teeth portion of stator core is divided into interior teeth portion and outer
Two parts of teeth portion, and have an auxiliary tank between interior teeth portion and outer toothed portion, auxiliary tank and rotor every magnetic region circumferential position
It is corresponding, radial slot is formed between the teeth portion of adjacent stator core, DC excitation winding is wound on outer by radial slot and auxiliary tank
Teeth portion, DC excitation winding are not contacted with the interior teeth portion of adjacent outer toothed portion and inside.
The DC excitation winding is located at the outer toothed portion periphery and three sides are surrounded by stator armature winding, in DC excitation
It is provided with first insulator between winding and outer toothed portion, second insulator is equipped in auxiliary tank, in DC excitation winding and determines
It is provided with the 4th insulator between sub- armature winding, third insulator is provided between stator armature winding and interior teeth portion.
The second insulator is air or insulating paper.
The first insulator, third insulator and the 4th insulator are insulating paper.
The outer toothed portion and interior teeth portion substantially covering of the fan shape, respectively the side far from rotor center be the center of circle in the rotor
The circular arc of the heart is respectively straight line close to the side of rotor center or is pointed generally in the circular arc of rotor center, respectively remaining two
Side is straight line, and smooth chamfering is arranged in apex, avoids scratching winding wire.
It is the double disk structure of soft magnetism pole, surface and stator of the rotor yoke in close stator side that the rotor, which uses internal and external circumference,
Soft magnetism pole is posted in the just corresponding position of iron core outer toothed portion, and rotor yoke is pasted in the position on surface and interior teeth portion face close to stator side
There are the permanent magnet to contact with each other and soft magnetism pole, rotor yoke is in the surface position just corresponding with stator core auxiliary tank close to stator side
Set is every magnetic region.
The permanent magnet is between the first soft magnetism pole and the second soft magnetism pole, and in a circumferential direction in alternating polarity point
Cloth, the first soft magnetism pole and the second soft magnetism pole use ferrimagnet, and the number of the first soft magnetism pole, the second soft magnetism pole and permanent magnet
It is equal, equal to the number of poles of motor.
A kind of amorphous alloy stator iron core manufacturing method of such as compound amorphous alloy axial-flux electric machine, feature
It is:
According to the width of required stator core axial dimension selection amorphous alloy strips, then according to the internal diameter of stator core and
Amorphous alloy strips are wound on the mold of inner diameter size by outer diameter, the thickness of coiling external diameter minus internal diameter, and layer stackup compresses close
After annealed, dipping lacquer and shaping solidification, after the completion of solidification, using laser cutting, spark cutting or water jet cutting will determine
The ends cutting radial slot of left and right two of sub- iron core forms stator teeth, the then circumferentially cutting life again by stator teeth
At auxiliary tank, the stator core for having inside and outside two parts circumference teeth portion is formed.
Advantage and effect
The present invention is a kind of compound amorphous alloy axial-flux electric machine, is had the following advantages and beneficial effects:
(1) it is proposed by the present invention it is a kind of by stator core toothed portion be inside and outside two layers, cover upper direct current in outer layer stator core tooth portion
The structure of excitation winding is conducive to the size for changing air-gap field by the size for adjusting exciting current on DC excitation winding.
(2) magnetic flux that the DC excitation winding in control magnetic field proposed by the present invention generates passes through soft magnetism pole, air gap, rotor yoke
Portion, stator core teeth portion and stator core yoke portion forming circuit, can easily realize that the control in magnetic field will not be to permanent magnet
The harm for generating demagnetization, improves the reliability of motor operation.
(3) the rotor inner surface position of amorphous alloy stator iron core interior teeth portion face proposed by the present invention is using connected
Permanent magnet and soft magnetism pole are connect, in demagnetizing current of the motor operation on the weak magnetism speed expansion stage, armature winding, is enabled to and permanent magnetism
The soft magnetism pole that body is connected generates reversed magnetic field, can make it have wider range of operation turn by weakened field to a greater extent
Speed.
(4) a kind of outer layer of rotor inner surface proposed by the present invention softens magnetic pole, and internal layer puts the permanent magnet being connected and soft
The structure of magnetic pole can need the reasonable space proportion for arranging permanent magnet and soft magnetism extremely shared according to real work, guarantee electricity
On the basis of machine prime power, the adjusting of required air-gap field intensity, range of motor speeds is realized, while using this permanent magnetism
Body and the extremely coefficient combination of soft magnetism are conducive to the dosage for reducing permanent magnet, reduce the manufacturing cost of motor.
(5) stator core made of a kind of amorphous alloy coiling proposed by the present invention, due to amorphous alloy material relative to
Traditional silicon steel sheet, the iron loss of motor is obviously much smaller in high frequency, therefore occasion of this motor especially suitable for high-frequency high-speed,
In addition motor teeth portion is divided into two layers inside and outside using service notch, since its stator teeth two parts separates, is conducive to high turn
The loss of the lower stator core teeth portion for reducing amorphous alloy axial-flux electric machine of speed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of compound amorphous alloy axial-flux electric machine；
Fig. 2 is compound amorphous alloy axial-flux electric machine rotor structure schematic diagram；
Fig. 3 is compound amorphous alloy axial-flux electric machine stator groove profile and teeth portion structural schematic diagram；
Winding and insulation schematic diagram on the single stator tooth of Fig. 4；
Fig. 5 stator outer toothed portion winding and insulation schematic diagram.
Description of symbols:
1. rotor yoke, 2. second soft magnetism poles, 3. every magnetic region, 4. permanent magnets, 5. first soft magnetism poles, 6. stator yokes, 7. armatures around
Group, 8. DC excitation windings, 9. outer toothed portions, 10. interior teeth portions, 11. stator teeths, 12. rotor field spiders, 13. auxiliary tanks, 14.
Radial slot, 15. first insulators, 16. second insulators, 17. the 4th insulators, 18. third insulators.
Specific embodiment
Following further describes the present invention with reference to the drawings:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, a kind of compound amorphous alloy axial-flux electric machine, including stator, casing,
End cap, shaft, bearing and rotor, it is characterised in that: the stator core is amorphous alloy stator core, and stator core includes fixed
11 two parts in sub- yoke portion 6 and stator teeth, stator teeth 11 are made of interior teeth portion 10 and outer toothed portion 9, multiple 10 Hes of interior teeth portion
Outer toothed portion 9 is circumferentially uniform to be distributed in stator yoke 6, and there are an interior teeth portion 10, stator core in the inside of each outer toothed portion 9
It is embedded in casing, DC excitation winding 8 is wrapped in outer toothed portion 9, and is arranged between DC excitation winding 8 and outer toothed portion 9
There is first insulator 15, each outer toothed portion 9 and on the inside of it interior teeth portion 10 is whole to be also wound with armature winding 7, armature winding 7
4th insulator 17 is set between internal DC excitation winding 8 with it, and the structure using this stator teeth piecemeal is conducive to
Reduce the loss in stator core, improves the performance of motor.Stator teeth 11 is located at the two sides of stator yoke 6, stator core two
Side is all equipped with rotor, and rotor is assemblied in shaft, and rotor includes rotor yoke 1, rotor field spider 12, the second soft magnetism pole 2, permanent magnet 4
With the first soft magnetism pole 5, the second soft magnetism pole 2, permanent magnet 4 and the first soft magnetism pole 5 are circumferentially uniformly mounted on rotor yoke 1 close to stator
There are a permanent magnet 4 in side, the inside of each second soft magnetism pole 2, and there is a first soft magnetism pole in the inside of each permanent magnet 4
5, permanent magnet 4 contacts with each other with the first soft magnetism pole 5, and permanent magnet 4 and the first soft magnetism pole 5 are opposite with the circumferential position of interior teeth portion 10
It answers, the second soft magnetism pole 2 is corresponding with the circumferential position of outer toothed portion 9, and the second soft magnetism pole 2 passes through with the permanent magnet 4 of its week inwardly
Be isolated every magnetic region 3, every magnetic region 3 be air.Rotor yoke 1 uses soft magnetic materials, respective 4 position of magnetic pole of permanent magnet of two sides rotor
Face and polarity is different forms a kind of axial-flux electric machine of single stator and double-rotor structure, armature winding 7 and DC excitation winding
8 is arranged in a ring on sagittal plane, and there is non-overlapping, two sets of armature winding 7 and DC excitation winding 8 to be axially
It is holosymmetric.Permanent magnet 4, the first soft magnetism pole 5 and the second soft magnetism pole 2 are respectively adhered on two sides rotor and turn close to described in stator side
On sub- 1 surface of yoke.But the fixed form of permanent magnet 4, the first soft magnetism pole 5 and the second soft magnetism pole 2 is not limited only to gluing, can also lead to
It crosses and punches blending bolt connection on magnetic pole, two kinds of connection types combined can also be taken.It is set respectively at the both ends of casing
There is end cap, the shaft of motor is by bearing support in the center of end cap.
Stator core is that amorphous alloy strips are entwined, and the teeth portion of stator core is divided into interior teeth portion 10 and external tooth
9 two, portion part, and have an auxiliary tank 13 between interior teeth portion 10 and outer toothed portion 9, auxiliary tank 13 and rotor every magnetic region 3 weeks
It is corresponding to position, radial slot 14 is formed between the teeth portion of adjacent stator core, DC excitation winding 8 passes through radial slot 14 and auxiliary
Slot 13 is wound on outer toothed portion 9, and DC excitation winding 8 is not contacted with the interior teeth portion 10 of adjacent outer toothed portion 9 and inside.Stator armature
Winding 7 is looped around on each stator teeth 11 being made of interior teeth portion 9 and outer toothed portion 10, and it is fixed to form a kind of amorphous alloy
The structure of sub- 11 sets of two kinds of windings of core tooth part.DC excitation winding 8 is located at 9 periphery of outer toothed portion and three sides by stator armature
Winding 7 surrounds, and first insulator 15 is provided between DC excitation winding 8 and outer toothed portion 9, and second is equipped in auxiliary tank absolutely
Edge body 16 is arranged between DC excitation winding 8 and stator armature winding 7 for isolated DC excitation winding 8 and interior teeth portion 10
There is the 4th insulator 17, third insulator 18 is provided between stator armature winding 7 and interior teeth portion 10.Second insulator 16 is
Air or insulating paper.Preferably, it is reduced cost in the case where meeting security reliability, selects air exhausted as second
The dielectric of edge body 16.First insulator 15, third insulator 18 and the 4th insulator 17 are insulating paper, and their material
Expect identical.Outer toothed portion 9 and the substantially covering of the fan shape of interior teeth portion 10, respectively the side far from rotor center is the center of circle heart in the rotor
Circular arc, be respectively straight line close to the side of rotor center or be pointed generally in the circular arc of rotor center, respectively remaining two
While being straight line, and smooth chamfering is set in apex, avoids scratching winding wire.Rotor is soft magnetism pole using internal and external circumference
Double disk structure, rotor yoke 1 post soft magnetism pole 2 in the surface position just corresponding with stator core outer toothed portion 9 close to stator side, turn
Sub- yoke 1 posts the permanent magnet 4 to contact with each other and soft magnetism pole 5 in the position on surface and 10 face of interior teeth portion close to stator side, turns
Sub- yoke 1 is every magnetic region 3 in the surface position just corresponding with stator core auxiliary tank 13 close to stator side.Permanent magnet 4 is in the
Between one soft magnetism pole 5 and the second soft magnetism pole 2, and it is distributed in a circumferential direction in alternating polarity, the first soft magnetism pole 5 and the second soft magnetism
Pole 2 uses ferrimagnet, and the first soft magnetism pole 5, the second soft magnetism pole 2 are equal with the number of permanent magnet 4, equal to the pole of motor
Number.Be conducive to reduce the eddy-current loss on permanent magnet using this structure, while the dosage for being also beneficial to save permanent magnet reduces
Cost improves motor performance.
The amorphous alloy stator iron core manufacturing method of above-mentioned compound amorphous alloy axial-flux electric machine:
According to the width of required stator core axial dimension selection amorphous alloy strips, then according to the internal diameter of stator core and
Amorphous alloy strips are wound on the mold of inner diameter size by outer diameter, the thickness of coiling external diameter minus internal diameter, and layer stackup compresses close
After annealed, dipping lacquer and shaping solidification, after the completion of solidification, using laser cutting, spark cutting or water jet cutting will determine
The ends cutting radial slot of left and right two of sub- iron core forms stator teeth, the then circumferentially cutting life again by stator teeth
At auxiliary tank, the stator core for having inside and outside two parts circumference teeth portion is formed.
The course of work of the invention is as follows:
Stator is wound using amorphous alloy strips, and stator core or so two parts are slotted respectively then, have been slotted
And then an auxiliary tank is circumferentially opened again in the teeth portion of the right and left stator core respectively, each stator tooth
It has been divided into two parts, has then put soft magnetism pole in the just corresponding rotor-position of outer circle stator tooth, it is just corresponding in inner circle stator tooth
Rotor-position put permanent magnet and soft magnetism pole, upper DC excitation winding is wound in stator core excircle teeth portion, entirely fixed
Sub- teeth portion winds upper armature winding.It gives armature winding logical upper three phase sine alternating current respectively, gives DC excitation winding logical upper direct current
Then electricity gives it to magnetization in the soft magnetism pole of rotor corresponding position, so that soft magnetism pole and permanent magnet collective effect on rotor, produce
Resultant magnetic field is given birth to, magnetic field is closed by amorphous alloy stator iron core, and under electromagnetic field effect, rotor is under bearing support
Rotation, output mechanical energy.Due to it is proposed by the present invention be a kind of compound amorphous alloy axial-flux electric machine structure, can pass through
The size of exciting current is adjusted, to change air-gap field so as to improve the revolving speed and driveability of motor is improved.
Conclusion: compound amorphous alloy axial-flux electric machine of the present invention can not only inherit axial flux permanent magnet electricity
The power density of machine is big, torque density is big, the various features such as high-efficient, but also there is electro-magnetic motor air-gap field smoothly may be used
The advantages in the majority such as tune.
Claims (10)
1. a kind of compound amorphous alloy axial-flux electric machine, including stator, casing, end cap, shaft, bearing and rotor, special
Sign is: the stator core is amorphous alloy stator core, and stator core includes two parts of stator yoke and stator teeth,
Stator teeth is made of interior teeth portion and outer toothed portion, multiple interior teeth portions and outer toothed portion is circumferentially uniform is distributed in stator yoke, often
There is an interior teeth portion in the inside of a outer toothed portion, and stator core is embedded in casing, and DC excitation winding is wrapped in outer toothed portion,
And first insulator is provided between DC excitation winding and outer toothed portion, each outer toothed portion and the interior teeth portion on the inside of it are integrally gone back
It is wound with armature winding, the 4th insulator is set between armature winding and its internal DC excitation winding, rotor, which is assemblied in, to be turned
On axis, rotor includes rotor yoke, rotor field spider, the second soft magnetism pole, permanent magnet and the first soft magnetism pole, the second soft magnetism pole, permanent magnet
With the first soft magnetism is extremely circumferential is uniformly mounted on rotor yoke close to the side of stator, the inside of each second soft magnetism pole have one forever
There are a first soft magnetism pole in magnet, the inside of each permanent magnet, and permanent magnet contacts with each other with the first soft magnetism pole, permanent magnet and
One soft magnetism pole is corresponding with the circumferential position of interior teeth portion, and the second soft magnetism pole is corresponding with the circumferential position of outer toothed portion, the second soft magnetism
Pole and its week, permanent magnet inwardly was respectively equipped with end cap at the both ends of casing, the shaft of motor is logical by being isolated every magnetic region
Bearing support is crossed in the center of end cap.
2. compound amorphous alloy axial-flux electric machine according to claim 1, it is characterised in that: the stator tooth position
In the two sides of stator yoke, stator core two sides are all equipped with rotor, and rotor yoke uses soft magnetic materials, the respective permanent magnetism of two sides rotor
Body position of magnetic pole face and polarity is different, forms a kind of axial-flux electric machine of single stator and double-rotor structure, armature winding and straight
It is arranged in a ring on sagittal plane to flow excitation winding, and there is non-overlapping, two sets of armature winding and DC excitation winding exist
It is axially full symmetric.
3. compound amorphous alloy axial-flux electric machine according to claim 1, it is characterised in that: the stator core is
What amorphous alloy strips were entwined, the teeth portion of stator core is divided into two parts of interior teeth portion and outer toothed portion, and in internal tooth
There are an auxiliary tank, auxiliary tank, tooth of adjacent stator core corresponding every magnetic region circumferential position with rotor between portion and outer toothed portion
Form radial slot between portion, DC excitation winding is wound on outer toothed portion by radial slot and auxiliary tank, DC excitation winding not with
The interior teeth portion of adjacent outer toothed portion and inside contacts.
4. compound amorphous alloy axial-flux electric machine according to claim 1, it is characterised in that: the DC excitation around
Group is located at the outer toothed portion periphery and three sides are surrounded by stator armature winding, is provided between DC excitation winding and outer toothed portion
First insulator is equipped with second insulator in auxiliary tank, and the is provided between DC excitation winding and stator armature winding
Four insulators are provided with third insulator between stator armature winding and interior teeth portion.
5. compound amorphous alloy axial-flux electric machine according to claim 4, it is characterised in that: the second insulator
For air or insulating paper.
6. compound amorphous alloy axial-flux electric machine according to claim 4, it is characterised in that: first insulation
Body, third insulator and the 4th insulator are insulating paper.
7. compound amorphous alloy axial-flux electric machine according to claim 4, it is characterised in that: the outer toothed portion with it is interior
Teeth portion substantially covering of the fan shape, respectively the side far from rotor center is the circular arc of the center of circle heart in the rotor, respectively close to turning
The side of subcenter is straight line or the circular arc for being pointed generally in rotor center, remaining respective two side are straight line, and on vertex
Smooth chamfering is arranged in place, avoids scratching winding wire.
8. compound amorphous alloy axial-flux electric machine according to claim 1, it is characterised in that: in the rotor uses
Excircle is the double disk structure of soft magnetism pole, and rotor yoke is in the surface position just corresponding with stator core outer toothed portion close to stator side
Post soft magnetism pole, rotor yoke posts the permanent magnet to contact with each other and soft in the position on surface and interior teeth portion face close to stator side
Magnetic pole, rotor yoke are every magnetic region in the surface position just corresponding with stator core auxiliary tank close to stator side.
9. compound amorphous alloy axial-flux electric machine according to claim 1, it is characterised in that: the permanent magnet is in
Between first soft magnetism pole and the second soft magnetism pole, and it is distributed in a circumferential direction in alternating polarity, the first soft magnetism pole and the second soft magnetism
Pole uses ferrimagnet, and the number of the first soft magnetism pole, the second soft magnetism pole and permanent magnet is equal, equal to the number of poles of motor.
10. a kind of amorphous alloy stator iron core manufacture of compound amorphous alloy axial-flux electric machine as described in claim 1
Method, it is characterised in that:
According to the width of required stator core axial dimension selection amorphous alloy strips, then according to the internal diameter of stator core and
Amorphous alloy strips are wound on the mold of inner diameter size by outer diameter, the thickness of coiling external diameter minus internal diameter, and layer stackup compresses close
After annealed, dipping lacquer and shaping solidification, after the completion of solidification, using laser cutting, spark cutting or water jet cutting will determine
The ends cutting radial slot of left and right two of sub- iron core forms stator teeth, the then circumferentially cutting life again by stator teeth
At auxiliary tank, the stator core for having inside and outside two parts circumference teeth portion is formed.
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