CN109818471A - A kind of double air gaps magnetic field modulation magneto - Google Patents

A kind of double air gaps magnetic field modulation magneto Download PDF

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Publication number
CN109818471A
CN109818471A CN201910101754.9A CN201910101754A CN109818471A CN 109818471 A CN109818471 A CN 109818471A CN 201910101754 A CN201910101754 A CN 201910101754A CN 109818471 A CN109818471 A CN 109818471A
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stator
rotor
internal
magnetic field
salient pole
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CN109818471B (en
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项子旋
蒋敏
朱孝勇
浦尉玲
全力
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Jiangsu University
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Jiangsu University
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Abstract

The present invention discloses one kind and is suitable for electric car, the double air gaps magnetic field modulation magneto of electric tractor, composite rotors by coaxial inner conductor outer rotor, internal rotor and end disc composition, the coaxial cardiac status of stator is between outer rotor and internal rotor, it is circumferentially uniformly distributed and is formed by Ns stator core module, permanent magnetic steel is inlayed in fixation among two neighboring stator core module, each stator core module is to be U-shaped module in outer layer by radial section and is that E pattern block is radially combined into internal layer, the U-shaped module of outer layer has 2 stator dispatch from foreign news agency armature tooths and 1 outer layer groove, internal layer E pattern block has armature tooth in 2 stators, 1 intermediate assisted modulation tooth and 2 internal layer grooves;The single coil of centralized winding is wound on the armature tooth and permanent magnetic steel of two neighboring stator core module;Inside and outside two layers of gap structure is formed, forms composite permanet magnet Distribution of Magnetic Field in radial space, has had both series field and two kinds of magnetic field in parallel distribution form.

Description

A kind of double air gaps magnetic field modulation magneto
Technical field
The invention belongs to technical field of motor manufacture, refer in particular to one kind and be suitable for electric car, electric tractor etc. to need height The permanent magnet drive motor of the features such as power density, high torque density and high efficiency.
Background technique
Have the characteristics that the magnetic field modulation magneto of low speed high torque, is substantially run by magnetic gear actuating unit The inspiration of feature dexterously extends to magnetic gear operation logic among the design of motor, so that motor permanent magnetic field is through toning System obtains the evident characteristic in " magnetic field from speedup ".Thus, under the action of such magnetic field modulation effect, such motor usually has There is more outstanding low speed high torque ability, is applying in the electric propulsions occasion such as electric car, electric tractor.
Current magnetic field modulation class magneto has developed out two kinds of main structure types, comprising: magnetic gear Permanent Magnet and Electric Machine and vernier magneto.It is proposed in the document that Chinese invention patent application number is 201610356757.3 a kind of suitable for mixed Close the complementary type magnetic gear double-rotor machine of power vehicle driving application, comprising: external stator, intermediate modulation rotor and interior spoke Formula p-m rotor, wherein permanent magnetism internal rotor is axially subdivided into two sections by magnetic barrier, and deviation angle is equipped between two-stage rotor, It is misplaced and is designed by the module disjunction of p-m rotor, so that motor obtains ripple compensation characteristic, to realize that motor torque ripple is cut Weak purpose, but the motor in radial structure space there are inside and outside two layers of air gap, thus the permanent magnetic steel utilization rate of motor With power density by a degree of influence, in addition, intermediate modulation rotor is formed by multiple adjustable magnetic block circumference array, it can not Lead to that mechanical strength is low, processing technology difficulty is larger with avoiding, so that its application will receive largely Limitation.On the basis of retaining magnetic field modulation operation logic, Chinese invention patent application number be 201710781179.2 document Disclosed in the built-in tangential excitation vernier magneto of one kind, it is fixed that centre modulation ring and stator Integrated design are formed into fluting Son, the motor is under the action of magnetic field modulation effect, by using multiple evenly spaced tangential magnetic on rotor ring body circumference Change permanent magnetic steel design, not only improves the power density of motor, but also the drive characteristic with low speed high torque, however, by In the more complicated rotor structure of p-m rotor, so that the mechanical robustness of motor is affected, in addition, there are still electricity The problems such as torque pulsation of machine and difficult rotor heat dissipation.
Therefore, the magnetic field modulation magneto of high permanent magnetic steel utilization rate, high efficiency and high operational reliability how is obtained The problem of as high torque density magnetic field modulation motor research field urgent need to resolve.
Summary of the invention
The purpose of the present invention is in order to solve the problems existing in the prior art, providing, a kind of structure is simple, high torque density, height Efficiency, the electric propulsion system double air gaps magnetic field modulation magneto that torque pulsation is small and permanent magnetism utilization rate is high, it is existing to meet For the performance requirement of the driving occasion such as electric car, electric tractor.
To achieve the above object, the technical solution adopted by the present invention is that: including composite rotors and stator, composite rotors is by same The outer rotor of axial line, internal rotor and end disc composition, internal rotor are covered in the inside of outer rotor, outer rotor and internal rotor The same end end is fixedly connected by end disc;The coaxial cardiac status of stator is between outer rotor and internal rotor, and stator is by Ns Stator core module is circumferentially uniformly distributed composition, and Ns=2*m, m are number of motor phases;In two adjacent stator core modules Between fixation be inlaid with a permanent magnetic steel, permanent magnetic steel tangentially magnetizes along the circumference of stator, two neighboring permanent magnetic steel magnetization side To opposite;Each stator core module is to be U-shaped module in outer layer by radial section and is that E pattern block radially combines in internal layer It forms, coupling part is stator yoke, and the U-shaped module of outer layer has 2 stator dispatch from foreign news agency armature tooths and 1 outer layer groove, internal layer E pattern Block has armature tooth in 2 stators, 1 intermediate assisted modulation tooth and 2 internal layer grooves;Three-phase set is placed in inside and outside layer groove Chinese style winding, the single coil of centralized winding are wound in the armature tooth of two neighboring stator core module and the permanent-magnet magnetic of centre On steel.
Outer rotor is made of outer rotor yoke and outer rotor salient pole, is distributed uniformly and circumferentially N on outer rotor yoke inner wallrIt is a Outer rotor salient pole forms outer rotor slot between two neighboring outer rotor salient pole;Internal rotor is by internal rotor yoke and NrA internal rotor is convex Pole composition, NrA internal rotor salient pole is distributed uniformly and circumferentially on the outer wall of interior rotor yoke, two neighboring internal rotor salient pole Between formed internal rotor slot;Nr=Ns±2。
The present invention has the beneficial effect that afterwards by adopting the above technical scheme
1, present invention employs a kind of compound dual-rotor structure and modular stator core designs, so that motor is meeting list While stator fixing and single rotor moving component characteristic, inside and outside formation the characteristics of two layers of gap structure, not only dexterously The phenomenon that alleviating classical magnetic field modulating motor interelectrode magnetic leakage, and motor is made to form composite permanet magnet magnetic in radial space Field distribution, and series field and two kinds of magnetic field in parallel distribution form have been had both, so that the permanent magnetism utilization rate for obtaining motor mentions The performance advantage risen.
2, the present invention is due to using Composite Double rotor topological structure, so that the total output torque for making motor is by inner and outer rotors Torque on iron core is formed by stacking.Magneto is modulated compared to traditional single-air gap magnetic field, energy band of the present invention carrys out motor torque The performance advantage that density is effectively promoted.
3, the present invention implements the inside and outside arcs such as not to modular stator core armature tooth and permanent magnetic steel and designs, for changing accumulateing The magnetic coenergy in air gap is contained in the direction of rotor relative position angular rate of change, so that the motor was generated by ectonexine air gap Phase shift occurs for cogging torque, and mutually compensates counteracting after the superposition of compound birotor, and then reach and reduce the total tooth socket of motor The purpose of torque, and obtain the effect for reducing motor torque ripple.
4, the present invention implements the design of assisted modulation tooth in the inner groovy of modular stator iron core, has targetedly changed interior gas Gap magnetic field harmonics characteristic, rationally adjust by motor air gap generate cogging torque amplitude, with reach improve motor cogging torque, The beneficial effect of torque pulsation effective compensation rate.
5, this hair so that motor has poly- magnetic characteristic, and then is improved using the permanent magnetic steel for replacing cutting orientation magnetizing on circumference The magnetic flux density of air gap.
6, the present invention dexterously avoids conventional double air gap permanent magnet motor using two sets of electricity only with a set of armature winding Solution of Electromagnetic Field Penetration Problems brought by pivot winding.Further, since the inner groovy implementation assisted modulation tooth in modular stator iron core is set Meter, has design effect of fault-tolerant teeth, improves the stability and reliability of motor normal operation.
Detailed description of the invention
Fig. 1 is radial structure schematic diagram of the invention;
Fig. 2 is the axial view that composite rotors reduces in Fig. 1;
Fig. 3 is the radial cross-section of composite rotors in Fig. 1;
Fig. 4 is two neighboring stator core module and the mark amplification signal of the structure and geometric dimension of permanent magnetic steel in Fig. 1 Figure;
Fig. 5 is the distribution schematic diagram of centralized winding in Fig. 1;
Fig. 6 is that the present invention is not added with the partial view and magnetic flux being along the circumferential direction unfolded under assisted modulation tooth design situation Path schematic diagram;
Fig. 7 is the partial view and magnetic flux path schematic diagram that the present invention is along the circumferential direction unfolded;
Fig. 8 is the no-load magnetic field distribution map that the present invention is not added under assisted modulation tooth design situation;
Fig. 9 is no-load magnetic field distribution map of the present invention;
Figure 10 is the three-phase no-load back emf waveform figure that the present invention is not added under assisted modulation tooth design situation;
Figure 11 is three-phase no-load back emf waveform figure of the present invention;
Figure 12 is the output torque waveform diagram that the present invention is not added with inner and outer rotors part under assisted modulation tooth design situation;
Figure 13 is the output torque waveform diagram of inner and outer rotors part of the present invention;
Figure 14 is total output torque waveform diagram that the present invention is not added under assisted modulation tooth design situation;
Figure 15 is total output torque waveform diagram of the invention.
In figure: 1. composite rotors;2. stator;3. shaft;4, centralized winding;
1.1 outer rotor;1.2 internal rotor;1.3 end disc;
1.1.1 outer rotor yoke portion;1.1.2 outer rotor salient pole;1.1.3 outer rotor slot;1.2.1 internal rotor yoke portion;1.2.2 interior Rotor iron core salient pole;1.2.3 internal rotor slot;
2.1 stator core modules;2.2 permanent magnetic steel;
2.1.1 armature tooth in stator;2.1.2 stator dispatch from foreign news agency armature tooth;2.1.3 stator yoke;2.1.4 assisted modulation tooth.
Specific embodiment
Referring to Fig. 1 and Fig. 2, the present invention is a kind of high permanent magnetism utilization rate, low torque ripple double air gaps magnetic field modulation Permanent Magnet and Electric Machine, including composite rotors 1, stator 2, shaft 3 and centralized winding 4.Most external is composite rotors 1, and most intermediate is shaft 3, The concentric set of stator 2 is between composite rotors 1,1 coaxial rotating of shaft 3 and composite rotors, is wound with centralized winding 4 on stator 2.
Composite rotors 1 is made of outer rotor 1.1, internal rotor 1.2 and end disc 1.3, and 1.2 sets of internal rotor in outer rotor 1.1 inside, three's coaxial inner conductor.The same end end of outer rotor 1.1 and internal rotor 1.2 connects by the way that end disc 1.3 is fixed It is connected together, connection type is riveting or welding, and composite rotors 1 is made to become an entirety.The coaxial cardiac status of stator 2 is in outer Between rotor 1.1 and internal rotor 1.2, the center of internal rotor 1.3 is for placing shaft 3.1.1 inner wall of outer rotor and 2 outer wall of stator Between there is radial outer air gap, while with the inside air gap of diameter between 1.2 outer wall of 2 inner wall of stator and inner stator, inside and outside air gap The technique of the power grade of thickness and motor, selected permanent magnet material and composite rotors 1, the processing of stator 2 and assembly has It closes, outer rotor 1.1, internal rotor 1.2 and stator 2 are formed by the silicon steel plate stacking of 0.35mm thickness, and stacking factor is 0.95。
Referring to Fig. 3, outer rotor 1.1 belongs to salient-pole structure in structure, all both without permanent magnet or nothing on 1.1 iron core of outer rotor Winding.Outer rotor 1.1 is made of outer rotor yoke 1.1.1 and outer rotor salient pole 1.1.2, on outer rotor yoke 1.1.1 inner wall circumferentially Direction is uniformly distributed NrA outer rotor salient pole 1.1.2.It is influenced to avoid unilateral magnetic force to motor performance bring, NrValue It should be even number.Outer rotor slot 1.1.3 is formed between two neighboring outer rotor salient pole 1.1.2.Two neighboring outer rotor salient pole 1.1.2 Between pole span shared by radian be βro, radian measure beta shared by outer rotor pole spanroWith the specific quantity N of outer rotor salient pole 1.1.2rBetween Meet βro=2 π/Nr, radian shared by the polar arc of outer rotor salient pole 1.1.2 is βrao, meet βrao=kroro, wherein kroTo turn outside Sub- salient pole 1.1.2 pole embrace.Radian shared by outer rotor slot 1.1.3 is βryo, radian measure beta shared by outer rotor slot 1.1.3ryo、, outer turn Radian measure beta shared by sub- polar arcraoAnd radian measure beta shared by pole spanroRelationship meet βryoraoro.The outer radii of outer rotor 1.1 For Roro, inner radii Rori, RoroWith RoriValue it is related with power of motor size.
Similar to outer rotor 1.1, internal rotor 1.2 belongs to salient-pole structure in structure, all both without forever on 1.2 iron core of internal rotor Magnet is also without winding.Internal rotor 1.2 is by internal rotor yoke 1.2.1 and NrA internal rotor salient pole 1.2.2 composition, NrA internal rotor salient pole 1.2.2 the outer wall in interior rotor yoke 1.2.1, internal rotor salient pole 1.2.2 and outer rotor salient pole 1.1.2 are distributed uniformly and circumferentially Quantity it is identical.Internal rotor slot 1.2.3, two neighboring internal rotor salient pole are formed between two neighboring internal rotor salient pole 1.2.2 1.2.2 radian shared by the pole span between is βri, radian measure beta shared by internal rotor pole spanriWith the specific quantity N of rotor with salient pole 1.2.2rIt is full Sufficient βri=2 π/Nr, radian shared by the polar arc of internal rotor salient pole 1.2.2 is βrai, meet βrai=krir, wherein kriFor internal rotor Salient pole 1.2.2 pole embrace.Radian shared by internal rotor slot 1.2.3 is βryi, radian measure beta shared by internal rotor slot 1.2.3ryi, polar arc institute Account for radian measure betaraiAnd radian measure beta shared by pole spanriRelationship meet βryirairi.The outer radii of internal rotor 1.2 is Riro, interior Circle radius is Riri, RoroWith RoriValue it is related with power of motor size.
Referring to fig. 4, stator 2 is circumferentially uniformly distributed by Ns stator core module 2.1 and is formed, in two adjacent stators Fixation is inlaid with a permanent magnetic steel 2.2 among iron core module 2.1.The quantity Ns of stator core module 2.1 meets Ns=2*m, m For number of motor phases.Meanwhile 2.1 quantity of stator core module and outer rotor salient pole 1.1.2 quantity and internal rotor salient pole 1.2.2 number Measure NrRestrictive condition should be met: Nr=Ns±2。
The geometry of each stator core module 2.1 be by radial section the U-shaped module of outer layer and in internal layer in E type Module is radially combined into, and coupling part forms stator yoke 2.1.3.Radially to each stator core module 2.1 The U-shaped module of outer layer there is 1 outer layer groove, internal layer E pattern block to have 2 identical internal layer grooves, the opening of outer layer groove is along diameter To outwardly, the opening of internal layer groove is radially inwards.It is coupling part between outer layer groove and internal layer groove, i.e. stator yoke 2.1.3.There are left and right 2 identical stator dispatch from foreign news agency armature tooth 2.1.2, radial directions in the U-shaped module of the radial outer of stator yoke 2.1.3 Internal layer E pattern block has armature tooth 2.1.1 and 1 intermediate assisted modulation tooth 2.1.4 in the 2 identical stators in left and right.
Radian measure beta shared by stator dispatch from foreign news agency armature tooth 2.1.2soAnd radian measure beta shared by armature tooth 2.1.1 in statorsiBetween should expire Foot: βsosi.Expanding 4 space of centralized winding while the magnetic line of force can be passed through in order to maximize armature tooth obtains motor Obtain torque capacity fan-out capability, radian measure beta shared by dispatch from foreign news agency armature tooth 2.1.2soWith radian measure beta shared by a stator core module 2.1s Constraint condition: 0.22 < β should be metsos<0.25.Meanwhile in order to avoid being protected while stator yoke 2.1.3 magnetic saturation situation Demonstrate,prove the space of centralized winding 4, radical length h of the stator yoke 2.1.3 along motorsyWith dispatch from foreign news agency armature tooth 2.1.2 radially length hsoAnd interior armature tooth 2.1.1 radical length hsiRestrictive condition: 2.1 < h should be metso/hsy< 2.3,2.6 < hsi/hsy<2.8。
Make internal rotor 1.2, outer turn in order to sufficiently improve cogging torque and the torque pulsation of motor internal rotor 1.2 The cogging torque of son 1.1 and the amplitude of torque pulsation are close, more effectively realize birotor compensation, assisted modulation tooth 2.1.4 Along motor tangential width wstWith stator yoke 2.1.3 along motor radical length hsyRestrictive condition: 0.55 < w should be metst/hsy< 0.6。
Permanent magnetic steel 2.2 tangentially magnetizes along the circumference of stator, and the direction of magnetization phase of two adjacent permanent magnetic steels 2.2 Instead.The permanent magnetic steel 2.2 uses sector structure, that is, radian measure beta shared by the inner end of permanent magnetic steel 2.2 in designpmoWith permanent magnetism Radian measure beta shared by 2.2 outer end of magnet steelpmiBetween meet: βpmopmi.The outer diameter of permanent magnetic steel 2.2 is equal to stator core module 2.1 Outer diameter, internal diameter be equal to stator core module 2.1 internal diameter.
Referring to Fig. 5, place three-phase centralization winding 4 in the inside and outside layer groove of stator core module 2.1, and centralization around The single coil of group 4 is wound on the armature tooth of two neighboring stator core module 2.1 and the permanent magnetic steel 2.2 of centre.Fig. 5 Middle "+" is the inlet wire direction of centralized winding 4, and "-" is the outlet direction of centralized winding 4, and A, B, C are motor three-phase windings. In order to guarantee that motor operates normally, centralized 4 number of pole-pairs Np of winding and outer rotor salient pole 1.1.2, internal rotor salient pole 1.2.2 quantity Nr and 2.1 quantity Ns of stator core module should meet magnetic field modulation basic principle, that is, meet restrictive condition: Np=| Ns/2-Nr|.Meanwhile in order to guarantee the higher motor torque output with higher that enables of effective harmonic wave revolving speed in motor gas-gap Power, centralized 4 number of pole-pairs of winding should meet restrictive condition: Np < 5.In addition, in order to reduce electric motor winding end length and then mention The requirement of centralized winding 4 of high electric efficiency, motor is:
The problem of in order to avoid traditional double-layer air gaps magneto using electromagnetic coupling brought by two sets of armature winding, Using a set of centralized winding 4 on the interior armature tooth 2.1.1 of the stator 2 and dispatch from foreign news agency armature tooth 2.1.2 of stator 2 in the present invention.Therefore, In the operational process of motor, generated back-emf and magnetic linkage can be with algebraic additions in inside and outside armature winding;It simultaneously can Guarantee that, in the case where motor load is run, the electric current being passed through in armature winding inside and outside motor is identical to guarantee the best of motor Operation.Meanwhile conventional double gas is avoided using a set of centralized winding 4 on interior armature tooth 2.1.1 and dispatch from foreign news agency armature tooth 2.1.2 Gap magneto is using Solution of Electromagnetic Field Penetration Problems brought by two sets of armature winding.
It is poor on magnetic circuit that the present invention is not added with motor under assisted modulation tooth design situation at work, with the present invention Not, referring specifically to fig. 6 with Fig. 7.In the course of work of the present invention, referring to Fig. 7, magnetic circuit a, the magnetic circuit b of generation and magnetic circuit c tri- Magnetic path parallel connection operation.Magnetic circuit c is not present since there is no assisted modulation tooth in conventional magnetic field modulating motor in motor operation course. Conventional magnetic circuit a operating path is as follows: from permanent magnetic steel 2.2 successively by armature tooth 2.1.1 in stator, internal rotor 1.2, stator Armature tooth 2.1.1, permanent magnetic steel 2.2, stator dispatch from foreign news agency armature tooth 2.1.2, outer rotor 1.1 and stator dispatch from foreign news agency armature tooth 2.1.2, finally Return to permanent magnetic steel 2.2;Magnetic circuit b is by permanent magnetic steel 2.2, successively passes through stator dispatch from foreign news agency armature tooth 2.1.2, outer rotor 1.1, determines Sub- dispatch from foreign news agency armature tooth 2.1.2 and stator yoke 2.1.3, eventually passes back to permanent magnetic steel 2.2;Magnetic circuit c is passed through by permanent magnetic steel 2.2 times Stator yoke 2.1.3, assisted modulation tooth 2.1.4, internal rotor 1.2, armature tooth 2.1.1 in stator, permanent magnetic steel 2.2, outside stator Armature tooth 2.1.2, outer rotor 1.1, stator dispatch from foreign news agency armature tooth 2.1.2, eventually pass back to permanent magnetic steel 2.2.Wherein for magnetic circuit c, electricity The outer rotor 1.1 of machine and the part stator dispatch from foreign news agency armature tooth 2.1.2 are identical with the path magnetic circuit a, thus assisted modulation tooth 2.1.4 Presence the cogging torque of motor outer rotor 1.1 and output torque part are not influenced;For motor internal rotor 1.2 with And the part armature tooth 2.1.1 in stator, magnetic circuit c a part form closed magnetic circuit from assisted modulation tooth 2.1.4, can be improved interior electricity The cogging torque of machine and torque pulsation, so that motor internal rotor 1.2 and 1.1 cogging torque of motor outer rotor and torque pulsation Amplitude it is close, significantly more efficient formation mutually compensates, to reduce motor cogging torque and torque pulsation.
Referring to Fig. 8 and Fig. 9, designed using special construction of the invention, shown from Distribution of Magnetic Field: permanent magnetic steel 2.2 generates Magnetic flux by outer rotor 1.1, internal rotor 1.2 and stator 2 form two mutually independent magnetic field while also pass through it is compound Rotor 1 and stator 2 form one and the independent magnetic field in other two magnetic field, and 3 individual magnetics form answering for this motor Close magnetic field.It is not added with simultaneously with the present invention under assisted modulation tooth design situation compared with motor, due to depositing for assisted modulation tooth 2.1.4 The leakage field in inner stator 1.2 and stator between armature tooth 2.1.1 greatly reduces, so that internal rotor 1.2 and outer rotor 1.2 Cogging torque and torque pulsation tend to balance.
Referring to Figure 10 and Figure 11, the unloaded back-emf under assisted modulation tooth design situation is not added with for the present invention and the present invention Waveform diagram.It is not added with motor under assisted modulation tooth design situation relative to the present invention, unloaded counter potential waveform of the invention is more It is sinusoidal, it means that the present invention has lower cogging torque and torque pulsation, shows that assisted modulation tooth 2.1.4 is good Torque amplitude compensation ability.
Referring to Figure 12,13,14 and Figure 15, the respectively present invention is not added with inside and outside output under assisted modulation tooth design situation and turns Output torque, the present invention are not added with the total output torque of motor and this hair under assisted modulation tooth design situation inside and outside square, the present invention Bright total output torque.It can be seen from the figure that being not added under assisted modulation tooth design situation relative to the present invention, assisted modulation tooth 2.1.4 modulating action effectively increases the torque pulsation amplitude of motor internal rotor 1.2, so that internal rotor 1.2 and outer rotor 1.1 Torque pulsation amplitude tends to be identical, and inside and outside output torque realizes significantly more efficient compensation, to reduce the total output torque of motor Torque pulsation.Therefore, structure of the invention significantly improves the stability and reliability of motor.

Claims (8)

1. a kind of double air gaps magnetic field modulation magneto, including composite rotors (1) and stator (2), it is characterized in that: composite rotors (1) it is made of the outer rotor of coaxial inner conductor (1.1), internal rotor (1.2) and end disc (1.3), internal rotor (1.2) covers outside The same end end of the inside of rotor (1.1), outer rotor (1.1) and internal rotor (1.2) connects by the way that end disc (1.3) are fixed It connects;The coaxial cardiac status of stator (2) is between outer rotor (1.1) and internal rotor (1.2), and stator (2) is by Ns stator core module (2.1) it is circumferentially uniformly distributed composition, Ns=2*m, m are number of motor phases;It is intermediate in two adjacent stator core modules (2.1) Fixation is inlaid with a permanent magnetic steel (2.2), and permanent magnetic steel (2.2) tangentially magnetizes along the circumference of stator, two neighboring permanent-magnet magnetic Steel (2.2) direction of magnetization is opposite;It in outer layer is U-shaped module and in internal layer that each stator core module (2.1), which is by radial section, It is that E pattern block is radially combined into, coupling part is stator yoke (2.1.3), and the U-shaped module of outer layer has 2 stator dispatches from foreign news agency There is armature tooth (2.1.1) in 2 stators, 1 intermediate auxiliary to adjust for armature tooth (2.1.2) and 1 outer layer groove, internal layer E pattern block Tooth (2.1.4) processed and 2 internal layer grooves;Three-phase centralization winding (4) are placed in inside and outside layer groove, the list of centralized winding (4) A coil winding is on the armature tooth of two neighboring stator core module (2.1) and the permanent magnetic steel (2.2) of centre.
2. a kind of double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: outer rotor (1.1) is by outer Rotor yoke (1.1.1) and outer rotor salient pole (1.1.2) form, and are distributed uniformly and circumferentially on outer rotor yoke (1.1.1) inner wall NrA outer rotor salient pole (1.1.2) forms outer rotor slot (1.1.3) between two neighboring outer rotor salient pole (1.1.2);Internal rotor (1.2) by internal rotor yoke (1.2.1) and NrA internal rotor salient pole (1.2.2) composition, NrA internal rotor salient pole (1.2.2) is circumferentially Direction is evenly distributed on the outer wall of internal rotor yoke (1.2.1), forms internal rotor between two neighboring internal rotor salient pole (1.2.2) Slot (1.2.3);Nr=Ns±2。
3. a kind of double air gaps magnetic field modulation magneto according to claim 2, it is characterized in that: two neighboring outer rotor is convex Radian shared by pole span between pole (1.1.2) is βro, radian measure betaroWith NrBetween meet βro=2 π/Nr, outer rotor salient pole (1.1.2) Polar arc shared by radian be βrao, meet βrao=kroro, kroFor outer rotor salient pole (1.1.2) pole embrace;In two neighboring Radian shared by pole span between rotor with salient pole (1.2.2) is βri, radian measure betariWith NrMeet βri=2 π/Nr, internal rotor salient pole Radian shared by the polar arc of (1.2.2) is βrai, meet βrai=krir, kriFor internal rotor salient pole (1.2.2) pole embrace.
4. a kind of double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: stator dispatch from foreign news agency armature tooth Radian measure beta shared by (2.1.2)soAnd radian measure beta shared by armature tooth (2.1.1) in statorsiMeet: βsosi;Dispatch from foreign news agency armature tooth Radian measure beta shared by (2.1.2)soWith radian measure beta shared by a stator core module (2.1)sMeet: 0.22 < βsos<0.25。
5. a kind of pulsation double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: stator yoke (2.1.3) radially length hsyWith stator dispatch from foreign news agency armature tooth (2.1.2) radially length hsoAnd armature tooth (2.1.1) in stator Radially length hsiMeet: 2.1 < hso/hsy< 2.3,2.6 < hsi/hsy<2.8。
6. a kind of double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: assisted modulation tooth (2.1.4) tangentially width wstWith stator yoke (2.1.3) radially length hsyMeet: 0.55 < wst/hsy<0.6。
7. a kind of double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: permanent magnetic steel (2.2) Outer diameter is equal to the outer diameter of stator core module (2.1), internal diameter is equal to the internal diameter of stator core module (2.1).
8. a kind of double air gaps magnetic field modulation magneto according to claim 1, it is characterized in that: centralized winding (4) pole Logarithm Np and outer rotor salient pole (1.1.2), internal rotor salient pole (1.2.2) quantity Nr and stator core module (2.1) quantity Ns Meet: Np=| Ns/2-Nr |, Np < 5,
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN111082622A (en) * 2020-01-10 2020-04-28 南京航空航天大学 Decoupling type birotor alternating pole permanent magnet motor
CN111181339A (en) * 2020-02-17 2020-05-19 南京航空航天大学 Stator modularized double-rotor doubly-salient permanent magnet motor
CN112829738A (en) * 2020-05-22 2021-05-25 博雷顿科技有限公司 Power control equipment of plug-in hybrid electric vehicle
CN114123559A (en) * 2021-11-11 2022-03-01 珠海格力电器股份有限公司 Stator assembly and motor
CN114268204A (en) * 2022-03-01 2022-04-01 天津滨海高新区河工电器科技有限公司 Flux switching motor with double permanent magnets and double armature windings
CN114614599A (en) * 2022-05-11 2022-06-10 东南大学 Permanent magnet motor with adjustable cogging torque and outer rotor magnetic field modulation
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Publication number Priority date Publication date Assignee Title
CN111082622A (en) * 2020-01-10 2020-04-28 南京航空航天大学 Decoupling type birotor alternating pole permanent magnet motor
CN111181339A (en) * 2020-02-17 2020-05-19 南京航空航天大学 Stator modularized double-rotor doubly-salient permanent magnet motor
CN112829738A (en) * 2020-05-22 2021-05-25 博雷顿科技有限公司 Power control equipment of plug-in hybrid electric vehicle
CN112829738B (en) * 2020-05-22 2022-05-17 博雷顿科技有限公司 Power control equipment of plug-in hybrid electric vehicle
CN114123559A (en) * 2021-11-11 2022-03-01 珠海格力电器股份有限公司 Stator assembly and motor
WO2023123639A1 (en) * 2021-12-29 2023-07-06 大富科技(安徽)股份有限公司 Motor structure, hub motor and vehicle
CN114268204A (en) * 2022-03-01 2022-04-01 天津滨海高新区河工电器科技有限公司 Flux switching motor with double permanent magnets and double armature windings
CN114614599A (en) * 2022-05-11 2022-06-10 东南大学 Permanent magnet motor with adjustable cogging torque and outer rotor magnetic field modulation
CN114614599B (en) * 2022-05-11 2022-07-19 东南大学 Permanent magnet motor with adjustable cogging torque and outer rotor magnetic field modulation

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