CN101986530B - High-power density motor with multidirectional magnetic field - Google Patents
High-power density motor with multidirectional magnetic field Download PDFInfo
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- CN101986530B CN101986530B CN2010105113968A CN201010511396A CN101986530B CN 101986530 B CN101986530 B CN 101986530B CN 2010105113968 A CN2010105113968 A CN 2010105113968A CN 201010511396 A CN201010511396 A CN 201010511396A CN 101986530 B CN101986530 B CN 101986530B
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Abstract
The invention provides a high-power density motor with a multifunctional magnetic field, which comprises a stator, a middle rotor, a left rotor, a right rotor, a left bearing, a right bearing and a hollow shaft, wherein the stator is fixed on the hollow shaft; the left and right rotors are positioned on the left and right sides of the stator respectively and connected with the hollow shaft through the left bearing and the right bearing respectively; the middle rotor is positioned between the left and right rotors and fixedly connected with the left and right rotors respectively; and the hollow shaft is fixed with other outside devices. The high-power density motor is an outer rotor permanent motor characterized in axial, radial and transverse magnetic field motors. The structure of the traditional motor and the placement mode of armature winding are improved and the end part of the winding can also be participated in the electromechanical energy conservation of the motor, so that the power density and the overall performance of the motor are improved.
Description
Technical field
What the present invention relates to is a kind of motor., particularly relate to a kind ofly have simultaneously axially, radially with the outer-rotor permanent magnet motor of horizontal magnetic field motor characteristic.
Background technology
The armature winding of motor is to be made up of jointly with the winding overhang that is used to be connected these conductor limits a plurality of conductor limits that are placed in the core slots.In the course of work of motor, be arranged in core slots conductor limit cutting air gap main field, produce induced electromotive force, realize energy converting between mechanical.The end of winding then is positioned at outside the air gap main field, does not only participate in the energy converting between mechanical of motor, but also can bring following adverse effect to motor properties:
The magnetic field that forms when (1) armature supply is flowed through winding overhang belongs to stray field, and the existence of this stray field can cause the wave distortion of air gap main field, increases degree of saturation unshakable in one's determination simultaneously;
(2) end of winding is positioned at outside the core slots, when disassembling and assembling machine, collides with easily and damages, and turn-to-turn short circuit or open circuit fault take place, and in some transient process of motor, excessive armature supply impact can cause the end to fracture;
(3) though energy converting between mechanical is not participated in the end of winding, also need consume a certain amount of copper cash, and produce corresponding copper loss, therefore can increase cost, the volume and weight of motor, reduce operational efficiency.
Publication number is in CN1199270, CN101345440, US2005151437 (A1), the WO03094328 patent documents such as (A1); All proposed to have simultaneously the high power density motor of axial and radial flux characteristic, the motor that these are mentioned and the present invention distinguish as follows:
(1) do not have fully proposed by the invention axially, radially, the simultaneous characteristic of transverse magnetic field.
(2) in these motors, stator winding is not fully utilized, and still has the end construction of traditional winding.
(3) do not have and the similar left and right end rotor structure of the present invention, stator circular trough structure, stator and rotor are at a distance from concrete structures such as magnetic measures.
(4) do not have, can't realize yet the 26S Proteasome Structure and Function of elimination teeth groove moment proposed by the invention.
Summary of the invention
The object of the present invention is to provide a kind of high power density motor with multidirectional magnetic field that can improve power density and overall performance.
The objective of the invention is to realize like this:
Comprise stator, center roller, left end rotor, right-hand member rotor, left end bearing, right-hand member bearing, hollow shaft; Stator is fixed on the hollow shaft; Left end rotor and right-hand member rotor lay respectively at the and arranged on left and right sides of stator, and are connected with hollow shaft with the right-hand member bearing through the left end bearing respectively; Center roller is positioned in the middle of left end rotor and the right-hand member rotor, and is fixed together with left end rotor and right-hand member rotor respectively; Hollow shaft is used for fixing with outside other equipment.
The present invention can also comprise:
1, stator structure is: stator core 1 at its cylindrical surface, offers equally distributed axial groove 2 along axis direction for cylindrical; All have radially equally distributed radial slot 3 on left and right two circular end surface of cylinder shape stator unshakable in one's determination 1; The number of the radial slot 3 on each end face is identical with the number of axial groove 2, and the far-end of each bar radial slot 3 promptly is communicated with away from an end and a corresponding axial groove 2 of the axis of stator core 1; Each end face all has the cannelure 4 of an annular; The dead in line of the center of circle of cannelure 4 and stator core 1; The cannelure 4 of each end face all with this end face in the near-end of all radial slots 3 promptly be communicated with near an end of the axis of stator core 1, and the structure of left and right two circular end surface of stator core 1 is identical; Stator core 1 inside is and the stator magnetism-isolating loop 5 of its coaxial line that the inside of stator magnetism-isolating loop 5 is axis hole; Outer surface in stator magnetism-isolating loop 5 and stator core 1 joint has radially-arranged stator magnetic isolation plate 6; The number of stator magnetic isolation plate 6 is identical with the number of radial slot 3; Stator magnetic isolation plate 6 is radially corresponding one by one with radial slot 3; Stator magnetic isolation plate 6 radially extends to the inboard cell wall place of cannelure 4, and stator magnetic isolation plate 6 is an overall structure with stator magnetism-isolating loop 5; Stator winding 7 is formed by the common coiling of polyphase windings; Each phase winding is again to be formed by connecting a plurality of coils that are scattered in the different slots; Wherein the coiling path of each coil all includes: first axial groove, second axial groove, left side first radial slot that is communicated with first axial groove, left side second radial slot that is communicated with second axial groove, in the short arc part of the left side cannelure between left side first radial slot and second radial slot, right side first radial slot that is communicated with first axial groove, right side second radial slot that is communicated with second axial groove, the short arc part of right side cannelure between right side first radial slot and second radial slot; Wherein the position of first axial groove is determined by design of Windings, and distance is a pitch between first axial groove and second axial groove; The winding joint of stator winding 7 is connected with an end of cable 8, and the other end of cable 8 causes that through the cable-through hole 10 of hollow shaft 9 motor is outside.
2, left end rotor and right-hand member rotor structure are: the inner surface of left end rotor core 11 is pasted with the inside and outside two circle magnetic poles of concentric placement; Wherein the outer ring promptly constitutes away from the outer ring main pole 12 of rotor core 11 axis magnetic poles by a plurality of axial chargings; Outer ring main pole 12 along the circumferential direction evenly distributes, and N, the S utmost point alternately put; Inner ring promptly constitutes near the inner ring main pole 13 of rotor core 11 axis magnetic poles by a plurality of axial chargings, and inner ring main pole 13 along the circumferential direction evenly distributes, and N, the S utmost point are alternately put, and number is identical with the number of outer ring main pole 12; The radian of outer ring main pole 12 equates with the radian of inner ring main pole 13, and radially corresponding one by one, but radially relative outer ring main pole 12 is opposite with inner ring main pole 13 polarity; Rotor core 11 inside are the end rotor magnetism-isolating loop 14 with its coaxial line; The outer surface of end rotor magnetism-isolating loop 14 and rotor core 11 joints; Have a plurality of radially-arranged ends rotor magnetic isolation plate 15; The number of end rotor magnetic isolation plate 15 is identical with the number of inner ring main pole 13; The position of rotor magnetic isolation plate 15 in rotor core 11, end is that end rotor magnetic isolation plate 15 radially extends to the inner arc place of outer ring main pole 12 between two adjacent inner ring main poles 13, and end rotor magnetic isolation plate 15 is an overall structure with end rotor magnetism-isolating loop 14.
3, the center roller structure is: the two ends of columnar center roller unshakable in one's determination 16 are two center roller magnetism-isolating loops 17 that structure is identical; Inner surface at center roller unshakable in one's determination 16 is pasted with a plurality of tile shape center roller main poles 18; The outer ring main pole 12 of its number and a left side or right-hand member rotor or the number of inner ring main pole 13 are identical; Center roller main pole 18 adopts radial magnetizing, and N, the S utmost point are circumferentially alternately placed along center roller unshakable in one's determination 16.
4, the annexation of left end rotor, right-hand member rotor and center roller is: the two ends of center roller are fixed together with left end rotor, right-hand member rotor respectively, constitute a complete rotor structure; After being fixed together; The outer ring main pole 12 of left end rotor or inner ring main pole 13 and the epitrochanterian same polarity of right-hand member outer ring main pole 12 or inner ring main pole 13 are axially corresponding, and its main pole axis is promptly along main pole magnetic direction and the dead in line through magnetic field center; Center roller main pole 18 is corresponding along the outer ring main pole 12 of the left and right end rotor of the axial and same polarity of motor; But the main pole axis of center roller main pole 18 is to differ an angle [alpha] between the line in the magnetic pole geometric center and the rotor center of circle at a left side or the epitrochanterian projection MM ' of right-hand member and the geometric center lines OO ' of corresponding outer ring main pole 12; The minimum value of angle [alpha] is zero; The maximum of angle [alpha] is the angle between adjacent two axial grooves 2, the i.e. slot-pitch angle of axial groove 2 on the stator.
5, the left end rotor is positioned on the hollow bearing 9 through left end bearing 19, and is positioned at the stator left side; The right-hand member rotor is positioned on the hollow bearing 9 through right-hand member bearing 20, and is positioned at the stator right side.
The present invention has improved the structure of conventional motors and the modes of emplacement of armature winding, makes the end of winding also can participate in the energy converting between mechanical of motor, and then has improved the power density and the overall performance of motor.
Operation principle of the present invention is:
High power density permanent magnet motor with characteristic of the present invention utilizes the two ends of hollow shaft 9 to be fixedly connected with other equipment or bracing or strutting arrangement; Stator winding 7 obtains polyphase ac voltage through cable 8 from the outside, and then forms the polyphase alternating current of 7 li of stator winding; Electric current is flowed through when being positioned at the winding of 2 li of stator shaft orientation grooves; Cylindrical surface in stator core 1 forms along circumferential N, the extremely alternatively distributed radial stator of S magnetic field; The number of the center roller main pole 18 on radial stator field pole number and the center roller is identical, and the magnetic field interaction that the center roller main pole 18 on this radial stator magnetic field and the center roller forms produces electromagnetic torque T
1When electric current is flowed through the winding of 3 li of radial slots of left and right two end faces of being positioned at stator core 1; Respectively on left and right two circular end surface of stator core 1; And be positioned at the outer peripheral areas of the cannelure 4 of end face separately; Form along circumferential N, the extremely alternatively distributed axial stator of S magnetic field; The axial stator field pole number of each end face is identical with the number of the epitrochanterian outer ring of (or right) end, left side main pole 12, and the magnetic field interaction that the axial stator magnetic field of stator core 1 left side and the epitrochanterian outer ring of left end main pole 12 form produces electromagnetic torque T
2, the magnetic field interaction that the axial stator magnetic field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 12 form produces electromagnetic torque T
3When electric current is flowed through the winding of 4 li of cannelures of left and right two end faces of being positioned at stator core 1; In the stator core zone of the inside and outside both sides of cannelure 4, form a horizontal stator field (this magnetic field has the characteristic of horizontal magnetic field motor internal magnetic field); It is overlapped that this horizontal stator field is positioned at the distribution of axial magnetic field of Distribution of Magnetic Field and this end face in cannelure 4 outsides; And the same polarity magnetic pole is strengthened each other; This horizontal stator field is positioned at the polarity of the magnetic field of cannelure 4 inboards with radially the opposite external side polarity of the magnetic field is opposite, the horizontal stator field of stator core 1 left side and the epitrochanterian outer ring of left end main pole 12 and the inner ring main pole 13 common magnetic field interactions generation electromagnetic torque T that form
4, the horizontal stator field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 12 produce electromagnetic torque T with the inner ring main pole 13 common magnetic field interactions that form
5Act on the electromagnetic torque T on the center roller
1, act on the epitrochanterian electromagnetic torque T of left end
2And T
4, act on the epitrochanterian electromagnetic torque T of right-hand member
3And T
5, direction is identical, drags rotor rotation jointly; Along with the change in current in the stator winding 7; The locus of the radial stator magnetic field that stator winding 7 produces, axial stator magnetic field, horizontal stator field changes in order, and then drags the lasting rotation of rotor, satisfies the demand of motor load.
Because the slot effect of motor is at electromagnetic torque T
1, T
2, T
3, T
4, T
5In all contain teeth groove moment (location torque) component separately, when equal zero in the α angle, these five teeth groove moment components are strengthened each other, the total teeth groove moment of motor this moment is maximum, the fluctuation maximum of output torque during the motor operation and rotating speed influences motor properties.Suitably regulate the angle at α angle, these five teeth groove moment components are weakened each other, and then motor is operated steadily, performance is improved.
In motor operation course; Stator magnetism-isolating loop 5 in the stator core 1, stator magnetic isolation plate 6; The center roller magnetism-isolating loop 17 at center roller 16 two ends unshakable in one's determination; The effect of the epitrochanterian end of left end rotor and right-hand member rotor magnetism-isolating loop 14, end rotor magnetic isolation plate 15 mainly is: reduce influencing each other between motor internal radial magnetic field, axial magnetic field and these three magnetic fields of transverse magnetic field; Increase the magnetic resistance of leakage magnetic circuit simultaneously, reduce the quantity of leakage flux, and then improve utilance, increase torque, the raising power density of motor internal magnetic flux.
Beneficial effect of the present invention is:
(1) utilance of stator winding is high.Motor with structure of the present invention; In its stator winding, do not have the end in the conventional motors winding; In the running of motor; Any part in the stator winding all can be cut air gap main field (the magnetic field acting in conjunction that the magnetic field that the magnetic field that the air gap main field is produced by radial stator magnetic field, axial stator magnetic field, horizontal stator field and center roller main pole 18, left end rotor outer ring main pole 12 and inner ring main pole 13 produce, right-hand member rotor outer ring main pole 12 and inner ring main pole 13 produce forms); Produce induced electromotive force, and then participate in the energy converting between mechanical process of motor.
(2) make full use of the magnetic field that stator current produces, leakage flux is few, the magnetic flux utilance high.Stator current produces radial stator magnetic field when flowing through the axial groove 2 of stator core 1; When the radial slot 3 of the left and right end face of the stator core 1 of flowing through, the axial stator magnetic field that produces left and right end face; When the cannelure 4 of the left and right end face of the stator core 1 of flowing through, produce the horizontal stator field of left and right end face, the electric current of the stator winding of therefore flowing through can be produced air gap main flux as much as possible by sufficient utilization.And the stator magnetism-isolating loop 5 in the stator core 1, stator magnetic isolation plate 6; The center roller magnetism-isolating loop 17 at center roller 16 two ends unshakable in one's determination; The application of the epitrochanterian end of left end rotor and right-hand member rotor magnetism-isolating loop 14, end rotor magnetic isolation plate 15 can effectively reduce influencing each other between radial magnetic field, axial magnetic field, the transverse magnetic field, further increases the magnetic resistance of leakage magnetic circuit; Reduce the quantity of leakage flux, improve the utilance of magnetic flux.
(3) power density is high.Motor with structure of the present invention, in running, its total electromagnetic torque is made up of five parts: the electromagnetic torque T that the magnetic field interaction that radial stator magnetic field and center roller main pole 18 form produces
1The electromagnetic torque T that the magnetic field interaction that the axial stator magnetic field of stator core 1 left side and left end rotor outer ring main pole 12 form produces
2The electromagnetic torque T that the magnetic field interaction that the axial stator magnetic field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 12 form produces
3The electromagnetic torque T that the magnetic field interaction of the horizontal stator field of stator core 1 left side and the epitrochanterian outer ring of left end main pole 12 and 13 formation of inner ring main pole produces
4The electromagnetic torque T that the magnetic field interaction of the horizontal stator field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 12 and 13 formation of inner ring main pole produces
5Therefore compare with existing other motors, the motor with structure of the present invention can produce bigger electromagnetic torque, has higher power density.
(4) design, the exploitation of suitable slowspeed machine.Motor with structure of the present invention; Not only the electromagnetic torque of output is big; And owing to the whole length that made full use of stator winding are carried out power conversion; Therefore under the identical prerequisite of output speed, the quality of motor with structure of the present invention is lighter, volume is littler, and then satisfies the demand that low speed drags occasion better.
(5) simple, the easy row of the method for elimination teeth groove moment.The angle of the main pole axis of motor with structure of the present invention through regulating center roller main pole 18 between the geometric center lines of the epitrochanterian projection of a left side (or right) end and corresponding outer ring main pole 12; The teeth groove moment adverse effect that operation brings to motor that slot effect causes can be weakened, eliminate, and complicated measure such as existing skewed stator slot or skewed-rotor needn't be taked.Particularly when adopt between middle rotor and the left and right end rotor be removable connected mode (for example screw) time, can carry out the size at flexible α angle according to actual conditions, and then satisfy the demands.
(6) can improve reliability in motor operation and the use.Motor with structure of the present invention; Its stator winding 7 is all placed and is fixed in axial groove 2, radial slot 3 and the cannelure 4 of stator core; Therefore; In the process of the dismounting of motor and operation, stator winding can obtain effective protection, so reduce the stator winding short circuit, the generation of fault such as open circuit.
Description of drawings
Fig. 1 does not include the stator structure figure of stator winding 7; Fig. 1 (a) radial view, Fig. 1 (b) axial view, Fig. 1 (c) A-A profile, Fig. 1 (d) B-B profile.
Fig. 2 includes the stator shaft orientation view of stator winding 7.
Fig. 3 (a)-Fig. 3 (c) left end rotor and right-hand member rotor structure figure; Fig. 3 (a) axial view, Fig. 3 (b) C-C profile, Fig. 3 (c) D-D profile.
Fig. 4 center roller axial view.
Fig. 5 has the overall structure sketch map of the motor of structure of the present invention.
The mutual alignment sketch map of the radial stator magnetic field on Fig. 6 stator, axial stator magnetic field, horizontal stator field, S1, N1 represent south, the north magnetic pole in radial stator magnetic field; S2, N2 represent south, the north magnetic pole in axial stator magnetic field; S3, N3 represent south, the north magnetic pole of horizontal stator field; Arrow shows magnetic line of force direction.
The mutual alignment sketch map of the epitrochanterian outer ring of Fig. 7 left end rotor and right-hand member main pole 12 and inner ring main pole 13, S4, N4 represent south, the north magnetic pole of outer ring main pole 12, S5, N5 represent south, the north magnetic pole of inner ring main pole 13.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Execution mode one
High power density motor with structure of the present invention is made up of several main parts such as stator, center roller, left end rotor, right-hand member rotor, left end bearing, right-hand member bearing, hollow shafts, specifically comprises: stator core 1; Axial groove 2 in the stator core 1, radial slot 3, cannelure 4; Stator magnetism-isolating loop 5, the stator magnetic isolation plate 6 of stator core 1 inside; Stator winding 7; Be used to connect the cable 8 of stator winding 7 and external power source; Have the hollow shaft 9 of cable-through hole 10; The rotor core 11 of left end rotor and right-hand member rotor; The outer ring main pole 12 and the inner ring main pole 13 of pasting in the rotor core 11 of left end rotor and right-hand member rotor; The end rotor magnetism-isolating loop 14 and end rotor magnetic isolation plate 15 of rotor core 11 inside of left end rotor and right-hand member rotor; Center roller unshakable in one's determination 16; The center roller magnetism-isolating loop 17 at center roller 16 two ends unshakable in one's determination; Stick on the center roller main pole 18 of center roller 16 inner surfaces unshakable in one's determination; Left end bearing 19; Right-hand member bearing 20.
With reference to existing Design of PM Motor method; Choose axial groove 2 and the number of center roller main pole 18 in the stator core 1; Serve as foundation and then can determine radial slot 3, left end and parameters such as right-hand member rotor outer ring main pole 12, inner ring main pole 13 with it; The concrete structure size can be calculated acquisition through electromagnetism.
Stator magnetism-isolating loop 5 adopts the metal material integral body of non-magnetic conduction to process with stator magnetic isolation plate 6, and adopts fixed form such as tight fit to link together between the stator core 1.
Stator winding 7 adopts the enamelled wire coiling, disperses to be placed on 4 li of axial groove 2 in the stator core 1, radial slot 3 and cannelures, can specifically adopt concentrated winding, distributed winding, whole apart from forms such as winding, short distance windings according to motor design; Between inner each phase winding of stator winding 7 and adopt methods such as placing insulating paper between stator winding 7 and the cell wall, realize electric insulation reliably; For fixed stator winding 7, should place slot wedge at the notch of axial groove 2, radial slot 3 and cannelure 4.
The rotor core 11 of left end rotor and right-hand member rotor adopts ferromagnetic material to process.
The epitrochanterian outer ring of left end rotor and right-hand member main pole 12 all adopts permanent magnetic material axial chargings such as ferrite or neodymium iron boron to process with inner ring main pole 13, and adopts mode such as stickup to be fixed on the inner surface of rotor core 11.
The epitrochanterian end of left end rotor and right-hand member rotor magnetism-isolating loop 14 all adopts the metal material integral body of non-magnetic conduction to process with end rotor magnetic isolation plate 15, and adopts fixed form such as tight fit to link together between the rotor core 11.
Center roller unshakable in one's determination 16 adopts ferromagnetic material to process.
Two center roller magnetism-isolating loops 17 all adopt non-magnetic conductive metal material to process, and adopt modes such as tight fit or welding to be fixed on the two ends of center roller unshakable in one's determination 16.
Center roller main pole 18 adopts permanent magnetic material radial magnetizings such as ferrites or neodymium iron boron to process, and adopts mode such as stickups to be fixed on the inner surface of center roller iron core 16.
Left end bearing 19 adopts ball bearing with right-hand member bearing 20; Also can adopt the bearing of other kinds as required; Being connected of the end rotor magnetism-isolating loop 14 of left end bearing 19 and hollow shaft 9 and left end rotor; And being connected of the end rotor magnetism-isolating loop 14 of right-hand member bearing 20 and hollow shaft 9 and right-hand member rotor, all adopt friction tight mode.
According to the requirement of load to teeth groove moment, utilize Electromagnetic Calculation, choose suitable α angle.
According to the size at α angle, position relation between adjustment left end rotor and right-hand member rotor and the center roller.
Between left end rotor and the center roller; And between right-hand member rotor and the center roller; Utilize connected modes such as screw to achieve a fixed connection, for example, evenly offer screw in the outer face of the center roller magnetism-isolating loop 17 at center roller two ends; And offer via hole at the correspondence position of the rotor core 11 of left end rotor and right-hand member rotor, utilize screw to realize fixing between left end rotor and right-hand member rotor and center roller again.
During the motor operation, stator winding 7 obtains polyphase ac voltage through cable 8 from the outside, and then forms the polyphase alternating current of 7 li of stator winding; Electric current is flowed through when being positioned at the winding of 2 li of stator shaft orientation grooves; Cylindrical surface in stator core 1 forms along circumferential N, the extremely alternatively distributed radial stator of S magnetic field; The number of the center roller main pole 18 on radial stator field pole number and the center roller is identical, and the magnetic field interaction that the center roller main pole 18 on this radial stator magnetic field and the center roller forms produces electromagnetic torque T
1When electric current is flowed through the winding of 3 li of radial slots of left and right two end faces of being positioned at stator core 1; Respectively on left and right two circular end surface of stator core 1; And be positioned at the outer peripheral areas of the cannelure 4 of end face separately; Form along circumferential N, the extremely alternatively distributed axial stator of S magnetic field; Axial stator field pole number is identical with the number of the epitrochanterian outer ring of (or right) end, left side main pole 12, and the magnetic field interaction that the axial stator magnetic field of stator core 1 left side and the epitrochanterian outer ring of left end main pole 12 form produces electromagnetic torque T
2, the magnetic field interaction that the axial stator magnetic field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 12 form produces electromagnetic torque T
3When electric current is flowed through the winding of 4 li of cannelures of left and right two end faces of being positioned at stator core 1; In the stator core zone of the inside and outside both sides of cannelure 4, form a horizontal stator field (this magnetic field has the characteristic of horizontal magnetic field motor internal magnetic field); It is overlapped that this horizontal stator field is positioned at the distribution of axial magnetic field of magnetic field branch scope cloth and this end face in cannelure 4 outsides; And the same polarity magnetic pole is strengthened each other; This horizontal stator field is positioned at the polarity of the magnetic field of cannelure 4 inboards with radially the opposite external side polarity of the magnetic field is opposite, the horizontal stator field of stator core 1 left side and the epitrochanterian outer ring of left end main pole 12 and the inner ring main pole 13 common magnetic field interactions generation electromagnetic torque T that form
4, the horizontal stator field of stator core 1 right side and the epitrochanterian outer ring of right-hand member main pole 1 produce electromagnetic torque T with the inner ring main pole 13 common magnetic field interactions that form
5Act on the electromagnetic torque T on the center roller
1, act on the epitrochanterian electromagnetic torque T of left end
2And T
4, act on the epitrochanterian electromagnetic torque T of right-hand member
3And T
5, direction is identical, drags rotor rotation jointly; Along with the change in current in the stator winding 7; The locus of the radial stator magnetic field that stator winding 7 produces, axial stator magnetic field, horizontal stator field changes in order, and then drags the lasting rotation of rotor, satisfies the demand of motor load.
Execution mode two
When the controller of motor need detect the position of rotor; Can bury Hall element underground for 3 li at cylindrical surface, both sides end face or axial groove 2 and the radial slot of stator core 1; Concrete laying method is identical with the laying method of existing magneto, and the input of Hall element, output line are connected with peripheral control unit through cable 8.
Other are identical with above execution mode.
Execution mode three
In order further to eliminate of the influence of teeth groove moment to motor performance; When regulating the α angle; Certain angle can stagger the geometric center lines of outer ring main pole radially relative on left end rotor and the right-hand member rotor 12 and inner ring main pole 13; The size of this angle is difficult for surpassing axial groove 2 pairing slot-pitch angles, and occurrence needs according to actual requirement, calculates through electromagnetism to obtain.
Other are identical with above execution mode.
Execution mode four
Center roller main pole 18, left end rotor and the epitrochanterian outer ring of right-hand member main pole 12, inner ring main pole 13 adopt plug in construction form (identical with the plug-in permanent magnet field structure form of existing magneto) separately with it between the iron core.
Other are identical with above execution mode.
Execution mode five
Other are identical with above execution mode.
Execution mode six
Center roller main pole 18 adopts the parallel magnetization mode to magnetize.
Other are identical with above execution mode.
Claims (5)
1. the high power density motor with multidirectional magnetic field is characterized in that: comprise stator, center roller, left end rotor, right-hand member rotor, left end bearing, right-hand member bearing, hollow shaft; Stator is fixed on the hollow shaft; Left end rotor and right-hand member rotor lay respectively at the and arranged on left and right sides of stator, and are connected with hollow shaft with the right-hand member bearing through the left end bearing respectively; Center roller is positioned in the middle of left end rotor and the right-hand member rotor, and is fixed together with left end rotor and right-hand member rotor respectively; Hollow shaft is used for fixing with outside other equipment; Stator structure is: stator core (1) at its cylindrical surface, offers equally distributed axial groove (2) along axis direction for cylindrical; All have radially equally distributed radial slot (3) on left and right two circular end surface of cylinder shape stator (1) unshakable in one's determination; The number of the radial slot on each end face (3) is identical with the number of axial groove (2), and the far-end of each bar radial slot (3) promptly is communicated with a corresponding axial groove (2) away from an end of the axis of stator core (1); Each end face all has the cannelure (4) of an annular; The dead in line of the center of circle of cannelure (4) and stator core (1); The cannelure of each end face (4) all with this end face in the near-end of all radial slots (3) promptly be communicated with near an end of the axis of stator core (1), and the structure of left and right two circular end surface of stator core (1) is identical; Stator core (1) inside is and the stator magnetism-isolating loop (5) of its coaxial line that the inside of stator magnetism-isolating loop (5) is axis hole; Outer surface in stator magnetism-isolating loop (5) and stator core (1) joint has radially-arranged stator magnetic isolation plate (6); The number of stator magnetic isolation plate (6) is identical with the number of radial slot (3); Stator magnetic isolation plate (6) is radially corresponding one by one with radial slot (3); Stator magnetic isolation plate (6) radially extends to the inboard cell wall place of cannelure (4), and stator magnetic isolation plate (6) and stator magnetism-isolating loop (5) are overall structure; Stator winding (7) is formed by the common coiling of polyphase windings; Each phase winding is again to be formed by connecting a plurality of coils that are scattered in the different slots; Wherein the coiling path of each coil all includes: first axial groove, second axial groove, left side first radial slot that is communicated with first axial groove, left side second radial slot that is communicated with second axial groove, in the short arc part of the left side cannelure between left side first radial slot and second radial slot, right side first radial slot that is communicated with first axial groove, right side second radial slot that is communicated with second axial groove, the short arc part of right side cannelure between right side first radial slot and second radial slot; Wherein the position of first axial groove is determined by design of Windings, and distance is a pitch between first axial groove and second axial groove; The winding joint of stator winding (7) is connected with an end of cable (8), and the other end of cable (8) causes that through the cable-through hole (10) of hollow shaft (9) motor is outside.
2. a kind of high power density motor according to claim 1 with multidirectional magnetic field; It is characterized in that left end rotor and right-hand member rotor structure are: the inner surface of rotor core (11) is pasted with the inside and outside two circle magnetic poles of concentric placement; Wherein the outer ring promptly constitutes away from the outer ring main pole (12) of rotor core (11) axis magnetic pole by a plurality of axial chargings; Outer ring main pole (12) along the circumferential direction evenly distributes, and N, the S utmost point alternately put; Inner ring promptly constitutes near the inner ring main pole (13) of rotor core (11) axis magnetic pole by a plurality of axial chargings, and inner ring main pole (13) along the circumferential direction evenly distributes, and N, the S utmost point are alternately put, and number is identical with the number of outer ring main pole (12); The radian of outer ring main pole (12) equates with the radian of inner ring main pole (13), and radially corresponding one by one, but radially relative outer ring main pole (12) is opposite with inner ring main pole (13) polarity; Rotor core (11) inside is the end rotor magnetism-isolating loop (14) with its coaxial line; The outer surface of end rotor magnetism-isolating loop (14) and rotor core (11) joint; Have a plurality of radially-arranged end rotor magnetic isolation plates (15); The number of end rotor magnetic isolation plate (15) is identical with the number of inner ring main pole (13); The position of end rotor magnetic isolation plate (15) in rotor core (11) is to be positioned between adjacent two inner ring main poles (13), and end rotor magnetic isolation plate (15) radially extends to the inner arc place of outer ring main pole (12), and end rotor magnetic isolation plate (15) and end rotor magnetism-isolating loop (14) are overall structure.
3. a kind of high power density motor according to claim 2 with multidirectional magnetic field; It is characterized in that the center roller structure is: the two ends of columnar center roller (16) unshakable in one's determination are two center roller magnetism-isolating loops (17) that structure is identical; Inner surface at center roller (16) unshakable in one's determination is pasted with a plurality of tile shape center roller main poles (18); The outer ring main pole (12) of its number and a left side or right-hand member rotor or the number of inner ring main pole (13) are identical; Center roller main pole (18) adopts radial magnetizing, and N, the S utmost point are circumferentially alternately placed along center roller (16) unshakable in one's determination.
4. a kind of high power density motor according to claim 3 with multidirectional magnetic field; The annexation that it is characterized in that left end rotor, right-hand member rotor and center roller is: the two ends of center roller are fixed together with left end rotor, right-hand member rotor respectively, constitute a complete rotor structure; After being fixed together; The outer ring main pole (12) of left end rotor or inner ring main pole (13) and the epitrochanterian same polarity of right-hand member outer ring main pole (12) or inner ring main pole (13) are axially corresponding, and its main pole axis is promptly along main pole magnetic direction and the dead in line through magnetic field center; Center roller main pole (18) is corresponding along the outer ring main pole (12) of the left and right end rotor of the axial and same polarity of motor; But the main pole axis of center roller main pole (18) is to differ an angle [alpha] between the line in the magnetic pole geometric center and the rotor center of circle at a left side or the epitrochanterian projection MM ' of right-hand member and the geometric center lines OO ' of corresponding outer ring main pole (12); The minimum value of angle [alpha] is zero; The maximum of angle [alpha] is the angle between adjacent two axial grooves (2) on the stator, the i.e. slot-pitch angle of axial groove (2).
5. a kind of high power density motor with multidirectional magnetic field according to claim 4 is characterized in that the left end rotor is positioned on the hollow shaft (9) through left end bearing (19), and is positioned at the stator left side; The right-hand member rotor is positioned on the hollow shaft (9) through right-hand member bearing (20), and is positioned at the stator right side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105113968A CN101986530B (en) | 2010-10-19 | 2010-10-19 | High-power density motor with multidirectional magnetic field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105113968A CN101986530B (en) | 2010-10-19 | 2010-10-19 | High-power density motor with multidirectional magnetic field |
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| Publication Number | Publication Date |
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| CN101986530A CN101986530A (en) | 2011-03-16 |
| CN101986530B true CN101986530B (en) | 2012-03-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104993637B (en) * | 2015-07-24 | 2017-11-24 | 扬州大学 | Magnetic suspension induction machine drive system of electric motor vehicle |
| CN107240965A (en) * | 2017-06-23 | 2017-10-10 | 贵州宝文电机科技有限公司 | Different number of pole-pairs wheel hub motors and wheel hub |
| CN108539955A (en) * | 2018-04-09 | 2018-09-14 | 丁士来 | Short stroke switched relutance linear motor and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300440A1 (en) * | 1992-07-22 | 1994-01-27 | Weh Herbert | Multiple track transversal flux machine with ring coils - has stator and rotor formed from several track-wise identical units to allow high rotor speed and/or large diameter |
| US5952756A (en) * | 1997-09-15 | 1999-09-14 | Lockheed Martin Energy Research Corporation | Permanent magnet energy conversion machine with magnet mounting arrangement |
| CN2850121Y (en) * | 2005-12-06 | 2006-12-20 | 浙江大学 | Compound permanent magnet electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090001831A1 (en) * | 2007-06-26 | 2009-01-01 | Cho Chahee P | Axial Field Electric Motor and Method |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300440A1 (en) * | 1992-07-22 | 1994-01-27 | Weh Herbert | Multiple track transversal flux machine with ring coils - has stator and rotor formed from several track-wise identical units to allow high rotor speed and/or large diameter |
| US5952756A (en) * | 1997-09-15 | 1999-09-14 | Lockheed Martin Energy Research Corporation | Permanent magnet energy conversion machine with magnet mounting arrangement |
| CN2850121Y (en) * | 2005-12-06 | 2006-12-20 | 浙江大学 | Compound permanent magnet electric machine |
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| CN101986530A (en) | 2011-03-16 |
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