CN205681195U - A kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electric automobile - Google Patents

A kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electric automobile Download PDF

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Publication number
CN205681195U
CN205681195U CN201620334059.9U CN201620334059U CN205681195U CN 205681195 U CN205681195 U CN 205681195U CN 201620334059 U CN201620334059 U CN 201620334059U CN 205681195 U CN205681195 U CN 205681195U
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axial
stator
rotor
motor
radial
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王道涵
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Shandong University
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Shandong University
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Abstract

The utility model discloses a kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electric automobile, including radial stator, axial stator and rotor, wherein, described rotor is set in inside radial stator, coaxially lay with radial stator, the one or both ends of described rotor are provided with axial stator, and axial stator is concentric with rotor to be laid;It is provided with radially winding in the stator slot of radial stator, in the stator slot of described axial stator, be provided with axial winding;It is provided with rotor slot on rotor, it is placed with permanent magnet in rotor slot, described permanent magnet makes to produce on rotor magnet radial poles and axial pole, described magnet radial poles is towards motor radial stator, described axial pole is towards motor axial stator, make motor radially, axially all produce torque, form mixed magnetic circuit.Radial flux and axial magnetic flux that the utility model motor permanent magnet produces all are utilized, and eliminate brow leakage effect, improve motor material utilization rate, alleviate the weight of motor.

Description

A kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electricity Electrical automobile
Technical field
The utility model relates to a kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electronic Automobile.
Background technology
In recent years, with the reduction of the raising of permanent-magnet material resistance to elevated temperatures and price, magneto is in national defence, industrial or agricultural The aspects such as production and daily life are more widely applied, and forward high-power, high performance and miniaturization direction are developed. The power of current magneto is from several milliwatts to several megawatts, and range of application draws use from toy motor, commercial Application to naval vessel Large-scale magneto, be widely applied in national economy, daily life, war industry, aerospace various aspects.
But existing permagnetic synchronous motor has a disadvantage in that
1st, permagnetic synchronous motor is fixed due to permanent magnet magnetic kinetic potential, and motor main flux is non-adjustable, causes output-constant operation model Enclosing narrow, speed adjustable range is wide in range not.
2nd, in existing internal permanent magnet synchronous motor rotor structure, by various combinations, rotor permanent magnet realizes that " poly-magnetic is imitated Should ", therefore rotor core magnetic poles is close very high so that its end exists bigger leakage magnetic flux, and leakage-flux of rotor passes through rotor End or end cap Guan Bi, the total magnetic flux producing due to permanent magnet is certain, and the logical existence of brow leakage not only makes motor Two end magnetic field skewness, and reduce the useful flux utilization rate of motor, thus the power reducing motor is close Degree and torque density, for overcoming the impact that brow leakage is logical, during actual design, rotor through frequently with overhang structure, Make rotor core axial length be more than motor stator core axial length, but this structure significantly increases the axial long of motor Degree, and then add core material consumption and the manufacturing cost of motor, and on this structural nature, do not play the leakage of suppression end The effect of magnetic flux.
3rd, when existing permagnetic synchronous motor is properly functioning, generally only iq electric current produces torque, now id=0, and weak magnetic is transported During row, need to apply rotor d shaft current, now id ≠ 0, and then realize the demagnetizing effect to rotor magnetic pole, due to d shaft current Produced by the power inverter of motor, therefore when motor carries out weak magnetic control, the amplitude of machine winding current can be significantly increased, And it is greatly increased the capacity of power inverter, when needs carry out the weak magnetic of the degree of depth, the d shaft current now needing is very big, motor Work(angle will reduce rapidly, and current of electric will quickly exceed the capacity of frequency converter, therefore, to needing to carry out weak magnetism speed expansion operation forever Magnetic-synchro motor, it usually needs take extra measure and method to carry out weak magnetically condition, weaken every pole magnetic flux with this.
4th, different according to the path of d axle magnetic flux process during weak magnetic, the permagnetic synchronous motor of existing built-in rotor structure can To be divided into two classes, one type, when carrying out weak magnetic control, the d axle magnetic flux that armature winding produces can pass through the permanent magnet of motor, Causing permanent magnet irreversible demagnetization, an other class, when carrying out weak magnetic control, the d axle magnetic flux that armature winding produces is without forever Magnet closes, but the end by motor for the more rotor flux and end cap Guan Bi are forced, significantly in the magnetic field that d shaft current produces Increase the leakage magnetic flux of motor, and owing to motor end magnetic resistance is generally much bigger than air-gap reluctance, therefore, required for weak magnetic D shaft current is relatively big, significantly increases cost and the winding copper loss of power of motor inverter.
5th, existing permagnetic synchronous motor usual armature counter electromotive force harmonic wave is relatively big, cogging torque outstanding problem, brings serious Vibration and noise problem, the method for skewed stator slot or skewed-rotor that is typically with at present is to improve counter electromotive force harmonic wave simultaneously Weaken cogging torque, but skewed stator slot and skewed-rotor processing technology are more complicated, considerably increase manufacturing cost, and can be certain Degree reduces the average electromagnetic torque of motor, reduces torque density and the power density of motor.
In this case, seeking a kind of brow leakage little, magnetic flux utilization rate is high, and sine degree is good, adjustable magnetic flexible function but The little AC permanent magnet synchronous motor of power inverter capacity is most important.
Utility model content
The utility model is in order to solve the problems referred to above, it is proposed that the axial mixed magnetic circuit in a kind of bimorph transducer composite construction rotor footpath Permagnetic synchronous motor and electric automobile, the utility model uses the double-stator structure mode of axial stator and radial stator, and ties Close the rotor of composite construction so that radial flux and axial magnetic flux that permanent magnet produces all are utilized, eliminate end leakage Magnetic effect, improves motor material and utilizes utilization rate, alleviates the weight of motor, improves power density, and can be flexible Ground realizes that increasing magnetic operation and weak magnetism speed expansion run, and has widened the economical operation scope of motor, and to improving, driving used for electric vehicle is electric The performance of machine is significant.
To achieve these goals, the utility model adopts the following technical scheme that
The axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath, including radial stator, axially fixed Son and rotor, wherein, described rotor is composite construction, including the solid core linking together and laminate iron core, puts in rotor Being equipped with permanent magnet, described permanent magnet makes to produce on rotor magnetic flux, and a portion magnetic flux passes through radially along the radial direction of motor Air gap enters in the middle of radial stator, forms radially main flux, and another part magnetic flux is in axial direction entered by axial air-gap In the middle of axial stator, forming axial main flux, radially main flux and axial main flux composition mixed magnetic circuit, mixed by regulation and control Magnetic circuit, makes motor realize increasing conversion between magnetic running status and weak magnetism speed expansion running status.
Further, the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath, including radially fixed Son, axial stator and rotor, wherein, described rotor is set in inside radial stator, coaxially lays with radial stator, described rotor One or both ends be provided with axial stator, axial stator is concentric with rotor to be laid;
Described rotor is composite construction, including the solid core linking together and laminate iron core;
It is provided with radially winding in the stator slot of described radial stator, be provided with in the stator slot of described axial stator axially Winding;
Being provided with several rotor slot on described rotor, being placed with permanent magnet in rotor slot, described permanent magnet makes on rotor Producing magnet radial poles and axial pole, described magnet radial poles is towards motor radial stator, and described axial pole is axial towards motor Stator so that motor radially, axially all produces torque, forms mixed magnetic circuit, by regulation and control mixed magnetic circuit, makes motor realize increasing Change between magnetic running status and weak magnetism speed expansion running status.
There is radial air gap between described radial stator and rotor outer, exist between described axial stator and rotor tip Axial air-gap.
Described radial stator, including stator slot, stator tooth and stator yoke, wherein, stator yoke is circular, stator tooth Have multiple, along the distribution of stator yoke even circumferential, between adjacent stator tooth, have stator slot, be placed with in described stator slot radially Winding.
Described axial stator includes axial stator back yoke, axial stator groove and axial stator tooth, described axial stator back yoke Being positioned at the axial side of axial stator, axial stator tooth is arranged in axial stator back yoke, is provided with between axial stator tooth Axial stator groove, lays axial winding in axial stator groove.
The magnetic flux that described permanent magnet produces, a part enters in the middle of radial stator along motor radial through radial air gap, Forming radially main flux, another part extends axially through axial air-gap and enters in the middle of axial stator, forms axial main flux, footpath Producing torque to main flux with the magnetic field interaction that radially armature winding produces, axial main flux produces with axial armature winding Magnetic field interaction produce torque.
The radial direction main flux of described motor and axial main flux are parallel relationship.
The total magnetic flux producing due to permanent magnet is certain, and the radial direction main flux of motor and axial main flux close for parallel connection System, when radial direction armature winding applies d axle demagnetizing current, the radial direction main flux of motor reduces, and axial main flux increases, on the contrary, When the axial armature winding of motor applies d axle demagnetizing current, the axial main flux of motor reduces, and radially main flux subtracts increase.
When motor normally work do not need weak magnetic when, the axial armature winding of motor apply d axle demagnetizing current, now motor footpath Maximum to main flux, motor radially magnetic is close also maximum, the exportable rated maximum torque of motor and power, when motor needs to carry out weak During magnetism speed expansion, reducing the d axle demagnetizing current of axial armature winding, now motor radially main flux reduces, and radially magnetic is close drops therewith Low, motor realizes weak magnetic field operation, and motor running speed improves, and now axial armature winding can apply q shaft current, produces motor Raw power torque, improves torque output capability during motor weak magnetic field operation, and the power density and the torque that improve motor further are close Degree.
Preferably, described radial stator is formed by silicon steel plate stacking, and described axial stator is by silicon steel sheet wound processing Become.
Preferably, described number of motor phases m >=3, number of pole-pairs p >=1, radially armature winding and axial armature winding be individual layer around Group or Double Layer Winding, the magnetic field number of poles that radially armature winding produces is equal with magnet radial poles number of poles, and axial armature winding produces The number of poles in magnetic field is equal with axial pole number of poles.
Preferably, described rotor is provided with the groove laying permanent magnet, and described rotor tip is processed into fan ring-shaped, forms axle To magnetic pole, the number of poles of axial pole and the number of poles of magnet radial poles are equal.
Described permanent magnet arranges in the rotor according to the relative rule of like pole, it is achieved poly-magnetic effect, forms magnetic pole.Excellent Choosing, described permanent magnet can be single parallel-connection structure or series parallel structure.
Preferably, described permanent magnet is that high performance permanent magnetic materials is made, such as neodymium iron boron, Rare-Earth Cobalt etc., or low magnetic energy product Permanent-magnet material is made, such as ferrite etc..
Based on above-mentioned motor magnetic circuit regulation and control method, particularly as follows: according to motor work rated speed, nominal torque and Performance requirement, arranges the circle of radial air gap length, axial air-gap length and radial direction armature winding and the axial armature winding of motor Number, determines acting as producing main driving torque or realizing weak magnetic, to determine the work of motor of motor radial stator and axial stator Make state.
Further, the duty of described motor specifically includes three kinds:
(1) axial armature winding applies d shaft current, and radial stator produces main driving torque, and axial stator realizes weak magnetic work( And power torque can be produced;
(2) radially armature winding applies d shaft current, and axial stator produces main driving torque, and radial stator realizes weak magnetic work( Power torque can be produced;
(3) radial direction armature winding and the axial armature winding of motor does not all apply d shaft current, all only produces q shaft current, footpath Producing driving torque to main flux and radial stator armature field, axial main flux and axial stator armature field produce to drive and turn Square, motor torque density and power density reach maximum.
Three kinds of duties under concrete introduction:
(1) radial stator produces main driving torque, and axial stator realizes weak magnetic function and produces power torque
When radial direction armature winding and the equal no power of axial armature winding, the one of the magnetic flux of permanent magnet generation on described rotor Part enters radial stator in radial direction through radial air gap and forms radially main flux, and another part passes axially through axial air-gap and enters Entering axial stator and forming axial main flux, radially main flux determines that the radial air gap magnetic of motor is close, and axial main flux determines motor Axial air-gap magnetic close, owing to two parts magnetic flux is in parallel, empty load of motor radially main flux and axial main flux accounting are by radial direction gas The length of gap and axial air-gap determines, compared with axial air-gap, radial air gap is bigger, and radially the accounting of main flux is lower, instead Then higher.When motor normally work do not need weak magnetic field operation when, the armature winding of axial stator produces d shaft current so that electricity Arbor reduces to main flux, and radially main flux increases, and motor torque is mainly produced by radial direction main flux and radially armature winding magnetic field Raw, now the axial armature winding of motor only applies d shaft current, and radially main flux is maximum, by the regulation axial armature winding of motor D shaft current can regulate the size of radially main flux, when motor needs to carry out weak magnetic field operation, the d axle of axial armature winding Electric current reduces, and motor radially main flux reduces, and axial main flux increases, and now motor radial component is operated in weak magnetic stripe part, subtracts While the d shaft current of little axial armature winding, its q shaft current, now axial stator armature winding and axle can be increased simultaneously Produce power torque to main flux, increase torque density and the power density of motor.
(2) axial stator produces main driving torque, and radial stator realizes that weak magnetic function produces power torque
When radial direction armature winding and the equal no power of axial armature winding, the one of the magnetic flux of permanent magnet generation on described rotor Part enters radial stator in radial direction through radial air gap and forms radially main flux, and another part passes axially through axial air-gap and enters Entering axial stator and forming axial main flux, radially main flux determines that the radial air gap magnetic of motor is close, and axial main flux determines motor Axial air-gap magnetic close, owing to two parts magnetic flux is in parallel, empty load of motor radially main flux and axial main flux accounting are by radial direction gas The length of gap and axial air-gap determines, compared with axial air-gap, radial air gap length is bigger, and radially the accounting of main flux is more Low, on the contrary then higher.When motor normally work do not need weak magnetic field operation when, the armature winding of radial stator produces d shaft current, makes Obtaining motor radially main flux to reduce, axial main flux increases, and motor torque is mainly by axial main flux and axial armature winding magnetic Field produces, and now motor radially armature winding only applies d shaft current, and axial main flux is maximum, by regulation motor radial direction armature The d shaft current of winding can regulate the size of axial main flux, when motor needs to carry out weak magnetic field operation, and radially armature winding D shaft current reduces, and the axial main flux of motor reduces, and radially main flux increases, and now motor axial component is operated in weak magnetic stripe part, While reducing the d shaft current of radially armature winding, its q shaft current can be increased simultaneously, now radial stator armature winding with Radially main flux produces power torque, increases torque density and the power density of motor.
(3) radial stator and axial stator all produce driving torque
This is the third working condition of motor, and now radial direction armature winding and the axial armature winding of motor does not all produce D shaft current, all only produces q shaft current, and in this case, radially main flux and radial stator armature field produce to drive and turn Square, axial main flux and axial stator armature field produce driving torque, i.e. radial stator and axial stator and all produce driving Torque, now motor torque density and power density reach maximum.
A kind of electric automobile, motor uses the axial mixed magnetic circuit permanent magnet synchronous electric in above-mentioned bimorph transducer composite construction rotor footpath Machine.
The beneficial effects of the utility model are:
(1) the utility model motor is double-stator structure, and this double-stator structure is with existing most double-stator structures not With, in existing Double-stator motor, one of them stator is placed in inside rotor, be inner stator, one in rotor exterior, be External stator, the motor feels hot concentrates on motor axially, and motor thermic load is very high, and inner stator is not directly connected with external environment condition Connecing, motor radiating is more difficult.Two stators of the utility model motor are respectively radial stator and axial stator, this bimorph transducer Two stators of structure are respectively placed at the radial and axial direction of motor, and radial stator is complete with the stator of common permagnetic synchronous motor Exactly the same, radial stator is coaxially placed in outside p-m rotor, a magnetic flux part radially warp that rotor permanent magnet produces Crossing air gap and entering into radial stator formation radially main flux, radial stator is laid radially winding, axial stator is placed in electricity The end of machine, axial stator is coaxially relative with p-m rotor, and the magnetic flux that rotor permanent magnet produces enters axially into axial stator In the middle of iron core, axial stator being laid axial winding, two stator casings, all at outside motor, directly connect with external environment Touch, and dispel the heat in the end that can make full use of motor;
(2) the utility model motor is built-in rotor structure, has internal permanent magnet synchronous motor structural compactness good, The close height of the effective magnetic of air gap, it is easy to High Rotation Speed and torque density advantages of higher, the rotor of the bright motor of this law is composite construction, silicon Steel disc rotor portion can reduce eddy-current loss during operation, and solid rotor part can increase the axial magnetic conductivity of motor, and energy Enough produce eddy starting torque, it is achieved self-starting, the utility model rotor magnetic pole is divided into radial and axial two parts, radially Pole parts is similar with the rotor magnetic pole of common internal permanent magnet synchronous motor, and axial pole part is by by the axle of solid rotor Being processed into the annular salient pole iron core of fan to obtain to end, axial pole coordinates generation torque, radially magnetic with motor axial stator Pole coordinates generation torque with motor radial stator, and motor rotor construction is simple, it is easy to machining, low cost of manufacture;
(3) the utility model motor is mixed magnetic circuit permagnetic synchronous motor, and the magnetic flux part that permanent magnet produces is along motor Radially reaching radial stator through radial air gap becomes radially main flux, and another part magnetic flux passes axially through axial air-gap and reaches The axial stator of motor end becomes axial main flux, and the utility model motor is radial flux and the end magnetic flux of p-m rotor Being each provided with magnetic flux path, radial flux and end magnetic flux are obtained for sufficiently utilization, and motor does not has brow leakage to lead to, and improves Magnetic flux utilization rate, effectively improves end-region magnetic field of electrical machine distribution, improves power density and the torque density of motor;
(4) the utility model motor can carry out weak magnetism speed expansion operation, and when motor is properly functioning, axial stator winding is simultaneously Producing d axle and q shaft current, the magnetic field that d shaft current produces makes mosts magnetic fluxs that rotor produces radially into arriving radial direction Iron core, produces main torque with the magnetic field interaction that radial stator winding produces, and additionally sub-fraction magnetic flux enters axially into In axial stator, this part magnetic flux produces power torque with the q shaft current interaction of axial stator winding, i.e. motor is normally transported During row, axial stator winding plays increase motor radially main flux and produces power torque;When needs weak magnetism speed expansion runs, subtract The d shaft current of small machine axial stator winding, this makes considerable rotor flux enter axially in axial iron core, significantly Reduce the radial direction main flux of motor so that under the conditions of radial stator is operated in weak magnetic, significantly increase the speed adjustable range of motor, real Existing weak magnetism speed expansion;
(5) number of turn of the utility model motor radial stator winding and axial stator winding is according to the number of poles of real electrical machinery, Permanent magnet residual magnetism density, permanent magnet lays combination and motor speed range of operation appropriate design selects, it is therefore an objective to make electricity Arbor can either effectively change the radial direction main flux of motor to stationary part, thus possesses enough weak magnetic energy power, is not needing In the case of weak magnetic, enough power torques can be produced again, significantly increase power density and the torque density of motor;
(6) the utility model motor can separately design motor magnet radial poles and end fan ring magnetic pole geomery and The number of turn of armature winding, by both reasonable combination superpositions, offsets harmonic wave and the cogging torque weakening counter electromotive force, with this Improvement and the back emf waveform optimizing motor, and weaken the cogging torque of motor, overcome existing permagnetic synchronous motor necessary Skewed slot is used to suppress harmonic wave the shortcoming weakening cogging torque.
Brief description
Fig. 1 (a) is the utility model motor embodiment one structural representation;
Fig. 1 (b) is radial motor stator core and the rotor schematic diagram of the utility model motor embodiment one;
Fig. 1 (c) is the composite construction rotor stereogram of the utility model motor embodiment one;
Fig. 1 (d) is the composite construction rotor right view of the utility model motor embodiment one;
Fig. 1 (e) is the axial stator schematic diagram of the utility model motor embodiment one;
Fig. 1 (f) is the integrated motor right view of the utility model motor embodiment one;
Fig. 2 (a) is the utility model motor embodiment two structural representation;
Fig. 2 (b) is radial motor stator core and the rotor schematic diagram of the utility model motor embodiment two;
Fig. 2 (c) is the composite construction rotor stereogram of the utility model motor embodiment two;
Fig. 2 (d) is the composite construction rotor right view of the utility model motor embodiment two;
Fig. 2 (e) is the axial stator schematic diagram of the utility model motor embodiment two;
Fig. 2 (f) is the integrated motor right view of the utility model motor embodiment two;
Wherein, 1. radial stator tooth, 2. radial stator yoke, 3. radial stator groove, 4. radially armature winding, 5. radially gas Gap, 6. axial stator tooth, 7. axial stator yoke, 8. axial stator groove, 9. axial armature winding, 10. axial air-gap, 11. is solid Rotor, 12. silicon steel sheet rotors, 13. rotor slot, 14. permanent magnets, 15. magnet radial poles, 16. axial poles.
Detailed description of the invention:
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
The axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath, including radial stator, axially fixed Son and rotor, described rotor is placed in inside radial stator, and radial stator coaxial placement, between described rotor and radial stator Having radial air gap, described axial stator is placed in rotor tip, places with rotor coaxial, has between described rotor and axial stator Axial air-gap, described radial stator is formed by silicon steel plate stacking, and described radial stator includes stator slot, stator tooth and stator yoke Portion, lays radially winding in described stator slot, described axial stator is by silicon steel sheet wound and processes, and axial stator includes Axial stator back yoke, axial stator groove and axial stator tooth, lay axial winding in axial stator groove, described rotor is compound Structure, a part be made up of solid core, another part is pressed into by silicon steel sheet stack, and two parts are coaxially connected together, described Have rotor slot on rotor, lay permanent magnet in rotor slot, by reasonably laying combination, described permanent magnet realizes that " poly-magnetic is imitated Should ", rotor produces magnetic pole, described magnetic pole is divided into magnet radial poles and axial pole, and described magnet radial poles is towards motor radially Stator, is radial air gap between magnet radial poles and rotor, and described axial pole is processed into the shape of fan ring, axial towards motor Stator, is axial air-gap between described axial pole and axial stator.
Further, the magnetic flux that motor permanent magnet produces, a part enters into radially along motor radial through radial air gap In the middle of stator, forming radially main flux, another part extends axially through axial air-gap and enters in the middle of axial stator, is formed axially Main flux, radially main flux and the magnetic field interaction that radially armature winding produces produce torque, axial main flux and axial electricity The magnetic field interaction that pivot winding produces produces torque, and motor does not exist brow leakage field, and magnetic flux utilization rate is high, power density and Torque density is high.
Further, the total magnetic flux producing due to permanent magnet is certain, the radial direction main flux of motor and axial main magnetic Leading to for parallel relationship, when radial direction armature winding applies d axle demagnetizing current, the radial direction main flux of motor reduces, axial main flux Increasing, on the contrary, when the axial armature winding of motor applies d axle demagnetizing current, the axial main flux of motor reduces, radially main magnetic Lead to and subtract increase.When motor normally work do not need weak magnetic when, the axial armature winding of motor apply d axle demagnetizing current, now motor Radially main flux is maximum, and motor radially magnetic is close also maximum, the exportable rated maximum torque of motor and power, when motor needs to carry out During weak magnetism speed expansion, reducing the d axle demagnetizing current of axial armature winding, now motor radially main flux reduces, and radially magnetic is close therewith Reducing, motor realizes weak magnetic field operation, and motor running speed improves, and now axial armature winding can apply q shaft current, to motor Produce power torque, improve torque output capability during motor weak magnetic field operation, improve power density and the torque of motor further Density.
Further, described number of motor phases m >=3, number of pole-pairs p >=1, radially armature winding and axial armature winding can be Single-layer Windings or Double Layer Winding, radially the number of poles in the magnetic field that armature winding and axial armature winding produce is all and rotor Magnetic pole number of poles is equal.
Further, described composite rotors being axially arranged with the groove laying permanent magnet, described rotor tip is processed into fan ring Shape forms axial pole, and the number of poles of axial pole and the number of poles of magnet radial poles are equal.
Further, described permanent magnet is that high performance permanent magnetic materials is made, such as neodymium iron boron, Rare-Earth Cobalt etc., or low magnetic energy Long-pending permanent-magnet material is made, such as ferrite etc..
Further, described permanent magnet is according to the relative rule of like pole, arranges in the rotor according to certain combination, Realize poly-magnetic effect, form magnetic pole.
Further, described radial stator and composite rotors cylindrical between there is radial air gap, described axial stator and reality There is axial air-gap between heart rotor tip salient pole fan ring.
During the actual application of motor, the rated speed working according to motor, nominal torque and specific performance require, by closing The parameters such as radial air gap length of reason design motor, axial air-gap length and radially armature winding and axial armature winding The number of turn, determines that motor radial stator and axial stator are to produce main driving torque or realize weak magnetic function.
The utility model motor is built-in rotor structure, has internal permanent magnet synchronous motor structural compactness good, gas The close height of the effective magnetic of gap, it is easy to High Rotation Speed and torque density advantages of higher, the rotor of the bright motor of this law is composite construction, one Part is solid rotor, is processed into by solid core, and another part is pressed into by silicon steel sheet stack, the utility model rotor Magnetic pole is divided into radial and axial two parts, and magnet radial poles part is similar with the rotor magnetic pole of common internal permanent magnet synchronous motor, Axial pole part is obtained by the axial component of solid rotor is processed into the annular salient pole iron core of fan, axial pole with Motor axial stator coordinates generation torque, and magnet radial poles coordinates generation torque with motor radial stator.
The utility model motor is double-stator structure, and this double-stator structure is different from existing most double-stator structures, In existing Double-stator motor, one of them stator is placed in inside rotor, is inner stator, one in rotor exterior, for outer fixed Son, the motor feels hot concentrates on motor axially, and motor thermic load is very high, and inner stator is not directly connected with external environment condition, electricity Machine heat radiation more difficulty.Two stators of the utility model motor are respectively radial stator and axial stator, this double-stator structure Two stators be respectively placed at the radial and axial direction of motor, radial stator complete phase with the stator of common permagnetic synchronous motor With radial stator is coaxially placed in outside p-m rotor, and the magnetic flux part that rotor permanent magnet produces is in radial direction through gas Gap enters into radial stator and forms radially main flux, and radial stator is laid radially winding, and axial stator is placed in motor End, axial stator is coaxially relative with p-m rotor, and the magnetic flux that rotor permanent magnet produces enters axially into axial stator iron core In the middle of, axial stator is laid axial winding, two stator casings, all at outside motor, directly contact with external environment, and Dispel the heat in the end that can make full use of motor.
The utility model motor is mixed magnetic circuit permagnetic synchronous motor, and the magnetic flux part that permanent magnet produces is through motor footpath To reaching radial stator, forming flux circuit through stator core, becoming radially main flux, another part magnetic flux reaches vertically The axial stator of motor end, the axial stator iron core through end forms flux circuit, and in the utility model motor, permanent magnetism turns The radial flux of son and end magnetic flux are obtained for sufficiently utilization, improve magnetic flux utilization rate, and motor does not has brow leakage to lead to, Effectively improve end-region magnetic field of electrical machine distribution, improve power density and the torque density of motor.
The utility model motor can carry out weak magnetism speed expansion operation.When motor is properly functioning, axial stator winding produces simultaneously Raw d axle and q shaft current, the magnetic field that d shaft current produces makes mosts magnetic fluxs that rotor produces radially into arriving radial direction iron Core, produces main torque with the magnetic field interaction that radial stator winding produces, and additionally sub-fraction magnetic flux enters axially into axle In stator, this part magnetic flux produces power torque with the q shaft current interaction of axial stator winding, i.e. motor is properly functioning When, axial stator winding increases motor radially main flux and produces power torque;When needs weak magnetism speed expansion runs, reduce motor The d shaft current of axial stator winding, this makes considerable rotor flux enter axially in axial iron core, significantly reduces The radial direction main flux of motor so that under the conditions of radial stator is operated in weak magnetic, significantly increases the speed adjustable range of motor, it is achieved weak magnetic Expansion speed.
The number of turn of the utility model motor radial stator winding and axial stator winding is according to the number of poles of real electrical machinery, permanent magnetism Body residual flux density, permanent magnet lays combination and motor speed range of operation appropriate design selects, it is therefore an objective to make motor shaft Can either effectively change the radial direction main flux of motor to stationary part, thus possess enough weak magnetic energy power, not need weak magnetic In the case of, enough power torques can be produced again, significantly increase power density and the torque density of motor.
The utility model motor can separately design motor magnet radial poles and the end fan shape of ring magnetic pole and armature around The number of turn of group, by both reasonable combination superpositions, offsets harmonic wave and the cogging torque weakening counter electromotive force, improve with this and The back emf waveform of optimization motor, and weaken the cogging torque of motor, overcome existing permagnetic synchronous motor and must use tiltedly Groove suppresses harmonic wave the shortcoming weakening cogging torque.
Further, the motor that the utility model provides can use following field:
(1) household appliance technical field: include TV audio and video equipment, fan, air-conditioner, food processor, cosmetic tool, oil smoke Machine etc..
(2) computer and ancillary equipment field thereof: include computer (driver, fan etc.), printer, plotter, light Drive, CD writer etc..
(3) field of industrial production: include industrial drives device, material processing system, automation equipment, robot etc..
(4) automotive field: include permanent magnet starting motor, wiper motor, door-lock motor, seat lifting motor, sunshading ceiling Motor, cleaning pump motor, recorder motor, glass lifting motor, radiator cooling fan motor, air conditioner motor, antenna liter Fall motor, Oil pump electrical machinery etc..
(5) public life field: include clock and watch, beauty treatment machinery, automatic vending machine, ATM, paper money counter etc..
(6) traffic and transport field: include electric car, aircraft auxiliary equipment, naval vessel etc..
(7) space industry: include rocket, satellite, spaceship, space shuttle etc..
(8) national defence: include tank, guided missile, submarine, aircraft etc..
(9) medical field: include dental drill, artificial heart, medicine equipment etc..
(10) power field: include that wind-power electricity generation, cogeneration, miniature hydro-power generation, small-sized internal combustion generating set are used and sent out Motor, and the pilot exciter etc. of high-rating generator.
Above-mentioned application has only to motor or starter are replaced with motor of the present utility model, it is not necessary to art technology Personnel pay performing creative labour, therefore, also should belong to protection domain of the present utility model.
Embodiment one
As shown in Fig. 1 (a)-Fig. 1 (f), present embodiment number of motor phases is 3, and the radial stator number of teeth is 24, axial stator tooth Number is 12, and rotor slot number is 4, and permanent magnet blocks number is 4, and magnet radial poles number is 4, and axial magnetic number of poles is 4, and present embodiment includes footpath To stator, axial stator and rotor, radial stator is formed by silicon steel plate stacking, and radial stator includes radial stator tooth 1, radially fixed Sub-yoke 2 and radial stator groove 3, lay radially armature winding 4 in radial stator groove 3, radially armature winding 4 can for distribution around Group, concentratred winding or lap winding, radially the number of poles of armature winding is consistent with rotor radial magnetic pole number of poles, radial stator and rotor Coaxially, having radial air gap 5 between radial stator and rotor, axial stator is formed by silicon steel sheet wound, and axial stator includes axially Stator tooth 6, axial stator yoke 7 and axial stator groove 8, lay axial armature winding 9 in axial stator groove 8, axial armature around Group 9 can be Distributed Winding, concentratred winding or lap winding, and the number of poles of axial armature winding is consistent with rotor axial magnetic pole number of poles, Axial stator and rotor are concentric, have axial air-gap 10 between axial stator and rotor, and composite rotors is made up of two parts, a part For solid rotor 11, another part is silicon steel sheet rotor 12, and solid rotor 11 is relative with axial stator, and composite rotors is opened vertically Having rotor slot 13, laying permanent magnet 14 in rotor slot 13, the magnetizing direction of adjacent two pieces of permanent magnets is contrary, adjacent two blocks of permanent magnetism Body and between rotor core be radially formed magnet radial poles 15, solid rotor 11 end axial component be processed into salient pole fan annular Shape, forms axial pole 16, and axial pole 16 is relative with axial stator, and the magnetic flux that permanent magnet produces passes through magnet radial poles through footpath Entering radial stator iron core to air gap interlink with radially armature winding formation radial direction main flux, the magnetic flux of permanent magnet generation passes through axle Enter axial stator iron core to magnetic pole through axial air-gap to interlink with axial armature winding and to form axial main flux, radially main flux In parallel with axial main flux, footpath during empty load of motor can be controlled by the length separately designing radial air gap and axial air-gap To main flux and axial main flux, when motor runs, come by applying d shaft current to radial direction armature winding and axial armature winding Axial main flux during the operation of dynamic regulation motor and radially main flux, realize weak magnetic control with this, widen the permanent work(of motor Rate operation area.
Embodiment two
As shown in Fig. 2 (a)-Fig. 2 (f), embodiment two with the main distinction of embodiment one is, motor in (1) embodiment two Two ends all there is axial stator, and two ends of motor rotor core are processed into the shape of salient pole fan ring and form axle To magnetic pole, in (2) embodiment two, composite rotors is made up of three parts, and middle is silicon steel sheet rotor, and two ends are solid rotor, (3) In embodiment two, the arrangement mode of permanent magnet is different from embodiment one, and in embodiment one, permanent magnet is single parallel-connection structure, and real Executing permanent magnet in example two is series parallel structure.Present embodiment number of motor phases is 3, and the radial stator number of teeth is 24, axial stator tooth Number is 12, and rotor slot number is 4, and permanent magnet blocks number is 4, and magnet radial poles number is 4, and axial magnetic number of poles is 4, and present embodiment includes footpath To stator, axial stator and rotor, radial stator is formed by silicon steel plate stacking, and radial stator includes radial stator tooth 1, radially fixed Sub-yoke 2 and radial stator groove 3, lay radially armature winding 4 in radial stator groove 3, radially armature winding 4 can for distribution around Group, concentratred winding or lap winding, radially the number of poles of armature winding is consistent with rotor radial magnetic pole number of poles, radial stator and rotor Coaxially, having radial air gap 5 between radial stator and rotor, axial stator is formed by silicon steel sheet wound, and axial stator includes axially Stator tooth 6, axial stator yoke 7 and axial stator groove 8, lay axial armature winding 9 in axial stator groove 8, axial armature around Group 9 can be Distributed Winding, concentratred winding or lap winding, and the number of poles of axial armature winding is consistent with rotor axial magnetic pole number of poles, Axial stator and rotor are concentric, have axial air-gap 10 between axial stator and rotor, and composite rotors is made up of 3 parts, and two ends are Solid rotor 11, middle is silicon steel sheet rotor 12, and the solid rotor 11 at two ends is relative with axial stator, and composite rotors is opened vertically Having rotor slot 13, laying permanent magnet 14 in rotor slot 13, the magnetizing direction of adjacent two pieces of permanent magnets is contrary, adjacent two blocks of permanent magnetism Body and between rotor core be radially formed magnet radial poles 15, the end axial component of solid rotor 11 be processed into salient pole fan ring Shape, forms axial pole 16, and axial pole 16 is relative with axial stator, and the magnetic flux that permanent magnet produces is passed through by magnet radial poles Radial air gap entrance radial stator iron core interlinks with radially armature winding and forms radially main flux, and the magnetic flux that permanent magnet produces passes through Axial pole enters axial stator iron core through axial air-gap and interlinks with axial armature winding and to form axial main flux, radially main magnetic Logical in parallel with axial main flux, when can control empty load of motor by the length separately designing radial air gap and axial air-gap Radially main flux and axial main flux, when motor runs, by applying d shaft current to radial direction armature winding and axial armature winding Axial main flux when dynamically regulating the operation of motor and radially main flux, realize weak magnetic control with this, widen the perseverance of motor Power operation region.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel do not need to pay the various modification that creative work can make or deformation still at protection model of the present utility model Within enclosing.

Claims (10)

1. the axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath, is characterized in that: include radial stator, Axial stator and rotor, wherein, described rotor is composite construction, including the solid core linking together and laminate iron core, turns Being placed with permanent magnet in Zi, described permanent magnet makes to produce on rotor magnetic flux, and a portion magnetic flux leads to along the radial direction of motor Crossing radial air gap and entering in the middle of radial stator, form radially main flux, another part magnetic flux in axial direction passes through axial gas Gap enters in the middle of axial stator, forms axial main flux, radially main flux and axial main flux composition mixed magnetic circuit, by adjusting Control mixed magnetic circuit, makes motor realize increasing conversion between magnetic running status and weak magnetism speed expansion running status.
2. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levy and be: including radial stator, axial stator and rotor, wherein, described rotor is set in inside radial stator, same with radial stator Axle is laid, and the one or both ends of described rotor are provided with axial stator, and axial stator is concentric with rotor to be laid;
Described rotor is composite construction, including the solid core linking together and laminate iron core;
Be provided with radially winding in the stator slot of described radial stator, be provided with in the stator slot of described axial stator axially around Group;
Being provided with several rotor slot on described rotor, being placed with permanent magnet in rotor slot, described permanent magnet makes to produce on rotor Magnet radial poles and axial pole, described magnet radial poles towards motor radial stator, described axial pole towards motor axial stator, Make motor radially, axially all produce torque, form mixed magnetic circuit, by regulation and control mixed magnetic circuit, make motor realize increasing magnetic fortune Change between row state and weak magnetism speed expansion running status.
3. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levy and be: there is radial air gap between described radial stator and rotor outer, between described axial stator and rotor tip, there is axle To air gap.
4. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levy and be: the magnetic field interaction that described radial direction main flux and radially armature winding produce produces torque, axial main flux with axially The magnetic field interaction that armature winding produces produces torque.
5. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levying and being: described radial stator, including stator slot, stator tooth and stator yoke, wherein, stator yoke is circular, and stator tooth has Multiple, along the distribution of stator yoke even circumferential, between stator tooth, there is stator slot, in described stator slot, be placed with radially winding.
6. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levying and being: described axial stator includes axial stator back yoke, axial stator groove and axial stator tooth, described axial stator back yoke is positioned at The axial side of axial stator, axial stator tooth is arranged in axial stator back yoke, is provided with axially between axial stator tooth Stator slot, lays axial winding in axial stator groove.
7. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levy and be: radial direction main flux and the axial main flux of described motor are parallel relationship, empty load of motor radially main flux and axial main magnetic Logical accounting is determined by the length of radial air gap and axial air-gap.
8. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levy and be: described number of motor phases m >=3, number of pole-pairs p >=1, radially armature winding and axial armature winding be Single-layer Windings or bilayer around Group, the magnetic field number of poles that radially armature winding produces is equal with magnet radial poles number of poles, the number of poles in the magnetic field that axial armature winding produces Equal with axial pole number of poles.
9. the axial mixed magnetic circuit permagnetic synchronous motor in a kind of bimorph transducer composite construction rotor footpath as claimed in claim 1, it is special Levying and being: described rotor is provided with the groove laying permanent magnet, described rotor tip is processed into fan ring-shaped, forms axial pole, axle Equal to the number of poles of magnetic pole and the number of poles of magnet radial poles.
10. an electric automobile, is characterized in that: include that bimorph transducer composite construction as claimed in any one of claims 1-9 wherein turns Sub-footpath axial mixed magnetic circuit permagnetic synchronous motor.
CN201620334059.9U 2016-04-20 2016-04-20 A kind of axial mixed magnetic circuit permagnetic synchronous motor in bimorph transducer composite construction rotor footpath and electric automobile Expired - Fee Related CN205681195U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790470A (en) * 2016-04-20 2016-07-20 山东大学 Permanent magnet synchronous motor with two stators, composite rotor structure and radial and axial mixed magnetic paths and method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790470A (en) * 2016-04-20 2016-07-20 山东大学 Permanent magnet synchronous motor with two stators, composite rotor structure and radial and axial mixed magnetic paths and method thereof
CN105790470B (en) * 2016-04-20 2018-03-23 山东大学 A kind of control method of bimorph transducer composite construction rotor footpath axial direction mixed magnetic circuit permagnetic synchronous motor

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