CN104638796A - Magnetic circuit compensating primary electro-magnetic linear motor - Google Patents
Magnetic circuit compensating primary electro-magnetic linear motor Download PDFInfo
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- CN104638796A CN104638796A CN201510045636.2A CN201510045636A CN104638796A CN 104638796 A CN104638796 A CN 104638796A CN 201510045636 A CN201510045636 A CN 201510045636A CN 104638796 A CN104638796 A CN 104638796A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
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Abstract
The invention discloses a magnetic circuit compensating primary electro-magnetic linear motor. The magnetic circuit compensating primary electro-magnetic linear motor comprises a primary stage and a secondary stage, wherein the primary stage is provided with magnetic conduction teeth; the magnetic conduction teeth are wound with centralized armature windings in sequence; from a first magnetic conduction tooth, one centralized amateur winding sleeve every two magnetic conduction teeth, and adjacent centralized armature windings share one groove; from a second magnetic conduction tooth, each centralized armature winding sleeves two magnetic conduction teeth, and adjacent centralized armature windings are arranged at an interval or share one groove; secondary stage magnetic conduction teeth and the primary stage magnetic conduction teeth are arranged oppositely; the ratio of secondary stage polar pitch to primary stage pole pitch is equal to or approximately equal to 4*m*k/(2*m*k+/-1); m is the phase number of the motor; n is a motor unit number; k is the pair number of the centralized amateur windings which are connected in series with a phase amateur winding in each motor unit. The motor is free from a brush and is simple in secondary sub-structure, reverse potentials are symmetrical and are approximate to sine, the thrust ripple is low, and primary excitation is realized; variable-speed constant-voltage output and constant-speed variable-voltage output features can be achieved by adjusting the magnitude of excitation current.
Description
Technical field
What the present invention relates to is primary electrical field excitation linear motor, is specifically related to a kind of magnetic circuit complementary primary electricity field excitation linear motor, belongs to technical field of motor manufacture.
Background technology
Along with industrial expansion, linear electric motors are widely used.Adopt linear electric motors to drive and can save traditional mechanical gear rotary motion being converted to rectilinear motion, thus reduce system cost, noise decrease, reduce system bulk, reduce maintenance cost.Special in application in track transportation, when adopting electric rotating machine to drive, its actuating force is produced by the adhesion between wheel and rail, and speed is too high and there will be the problems such as wheel track slip when slowing down.Therefore, adopt linear electric motors to replace this technological means of electric rotating machine, the above-mentioned shortcoming of electric rotating machine in this application scenario can be overcome, improve the efficiency of whole system.
Current line inductance electromotor is applied in Guangzhou Underground circuit.Line inductance electromotor is brushless structure, does not need to safeguard, primary structure is simple, and system cost is low, plays a significant role in urban track traffic linear drives.But the speed adjusting performance of line inductance electromotor is not good, although adopt the converter techniques such as vector control, control complicated, speed adjusting performance still cannot compared with direct current machine.
Permanent magnetic linear synchronous motor has power density and efficiency advantages of higher, but due to its armature winding and permanent magnet be arranged on respectively secondary and elementary on, be system cost all can be caused excessive along track laying armature winding or permanent magnet in such as track traffic isometric secondary application occasion, safeguard the shortcomings such as inconvenient.And permanent magnet is exotic material, expensive, performance is to ambient temperature, and the factors such as mechanical oscillation are responsive, there is a lot of shortcoming in the application of track transportation applications.Importantly motor-field provides excitation by permanent magnet, is not easy to control, and weak magnetics detect technology must be adopted to add system cost and complexity.
In recent years, a kind of Modularized complementary type primary double-fed brushless direct-current linear motor (ZL201110089217.0) obtains the extensive concern of relevant scholar, and the secondary structure of this motor is simple, is only made up of permeability magnetic material, reliability is high, and armature winding and excitation winding are all placed in elementary.But research shows that this motor winding magnetic linkage is unipolarity, and there is shortcomings, as asymmetric in back-emf and harmonic content large, thrust output pulsation is large, and power density is low, greatly limits its engineering practicability.
Summary of the invention
Technical problem to be solved:
For the deficiency that prior art exists, the present invention seeks to be to provide a kind of good speed adjustment features, the electric field excitation linear motor of magnetic circuit complementary primary that is reliable, brushless.
Technical scheme:
In order to realize above function, the invention provides a kind of magnetic circuit complementary primary electricity field excitation linear motor, comprise elementary 11 and secondary 10, described elementary 11 and secondary 10 by permeability magnetic material form and there is air gap therebetween, described elementary 11 are provided with magnetic teeth 110, there is groove between magnetic teeth 110, magnetic teeth 110 is arranged alternately concentrated armature winding 111 and central excitation winding 112
The number of above-mentioned elementary 11 magnetic teeth 110 is Ns=4*m*k*n, and adjacent two magnetic teeth distances between center line are elementary pole span τ
p; Described concentrated armature winding 111 is wound on outside central excitation winding 112, wherein, magnetic teeth 110 is wound with 2*m*k*n concentrated armature winding 111 successively, from first magnetic teeth 110, in every two magnetic teeth 110, cover has a concentrated armature winding 111, and adjacent concentrated armature winding 111 shares a groove; From second magnetic teeth 110, each central excitation winding 112 overlaps two adjacent magnetic teeth 110, and every two central excitation windings, one, 112 intervals groove, or, from second magnetic teeth 110, each central excitation winding 112 overlaps two adjacent magnetic teeth 110, and adjacent central excitation winding 112 shares a groove;
Above-mentioned secondary 10 are made up of teeth groove type permeability magnetic material, secondary magnetic teeth and elementary 11 magnetic teeth 110 be oppositely arranged, the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1);
Wherein, m is the number of phases of motor, n and k is positive integer, and n is electric motor units number, and k is concentrated armature winding 111 logarithm of any phase armature winding series connection in each electric motor units.
Further, the central excitation winding 112 in each electric motor units is coupled in series, excitation winding element, the excitation winding units in series in n electric motor units or be connected in parallel; When the groove in every two central excitation windings, 112 intervals, the magnetic direction that central excitation winding 112 produces is identical; When every two central excitation windings 112 share a groove, the magnetic direction that in Neighbor Set, excitation winding 112 produces is contrary, the excitation winding units in series between n electric motor units or parallel connection.
Further, in each electric motor units, any phase armature winding is composed in series concentrated armature winding 111 by k, from first concentrated armature winding 111, the concentrated armature winding 111 of k placed adjacent is had to belong to same phase, thereafter k the concentrated armature winding 111 belonging to adjacent phase is set gradually, according to above-mentioned arrangement mode, 2k the concentrated armature winding 111 belonging to homophase forms k to armature winding in complementary sets, wherein concentrate for any pair two concentrated armature winding 111 in armature winding with secondary 10 relative position differ half level 10 pole span τ
s, correspond to 180 degree of electric angles, the two has complementary characteristic, and n electric motor units sets gradually, and the concentrated armature winding 111 belonging to homophase in different electric motor units is connected in series or in parallel.
Preferred as one, this motor is also included in elementary 11 two ends respectively increases an additional magnetic teeth 113.
Preferred as one, when this motor is from additional magnetic teeth 113, in every two magnetic teeth 110, cover has a central excitation winding 112, and adjacent central excitation winding 112 shares a groove, and the magnetic direction that in Neighbor Set, excitation winding 112 produces is contrary.
Preferred as one, described central excitation winding 112 and concentrated armature winding 111 are copper or superconductor.
Preferred as one, with described elementary 11 or secondary 10 for fixed part, another is moving component, with elementary 11 upper edges or secondary 10 lower edges for axle flip vertical, forms the motor of bilateral slab construction; Or rotate for axle with elementary 11 upper edges or secondary 10 lower edges, form the motor of cylindrical structure.
This magnetic circuit complementary primary electricity field excitation linear motor is motor or generator.
Beneficial effect:
Magnetic circuit complementary primary provided by the invention electricity field excitation linear motor, its armature winding and excitation winding are all placed in elementary and can control separately, be secondaryly only teeth groove type permeability magnetic material, structure is simple and cost is low, back-emf near sinusoidal.The excitation field of motor can be controlled by the size of current controlling DC excitation winding, thus ensure that this motor is as having wider Constant-power speed range during motor running, and export constant voltage as generator when friction speed is run.
As the drive motors used time, be particularly suitable for long distance, wide range speed control driving occasion, such as high-rise building elevator drive motor, urban track traffic drive linear electric motors etc. to need the application scenario of wide speed regulating range; The present invention is also particularly suitable as generator and uses, for occasions such as seawave power generations, this electric machine structure is simple, brushless, is secondaryly only made up of magnetic inductive block, structure is simple, lightweight, armature winding and excitation winding are all placed in elementary, by regulating the size of exciting current, thus reach speed constant pressure output and constant speed transformation output characteristic, improve energy output.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 1 electric machine structure schematic diagram;
Fig. 2 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 2 electric machine structure schematic diagram;
Fig. 3 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 3 electric machine structure schematic diagram;
Fig. 4 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 4 electric machine structure schematic diagram;
Fig. 5 bilateral magnetic circuit complementary primary electricity field excitation linear motor embodiment 5 electric machine structure schematic diagram provided by the invention;
Fig. 6 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 6 electric machine structure schematic diagram;
Fig. 7 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 7 electric machine structure schematic diagram;
Fig. 8 magnetic circuit complementary primary electricity provided by the invention field excitation linear motor embodiment 8 electric machine structure schematic diagram.
Embodiment
The invention provides a kind of magnetic circuit complementary primary electricity field excitation linear motor, for making object of the present invention, clearly, clearly, and the present invention is described in more detail with reference to accompanying drawing examples for technical scheme and effect.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
See Fig. 1, magnetic circuit complementary primary electricity field excitation linear motor provided by the invention, comprise elementary 11 and secondary 10, elementary 11 and secondary 10 are all permeability magnetic material and have air gap therebetween, elementary 11 are provided with magnetic teeth 110, magnetic teeth 110 are arranged alternately concentrated armature winding 111 and central excitation winding 112.In the present embodiment motor, m=3, k=1, n=1, wherein, m is the number of phases of motor, n and k is positive integer, and n is electric motor units number, and k is the concentrated armature winding logarithm of a phase armature winding series connection in each electric motor units.That is, this motor is three phase electric machine, has A, B, C three-phase, includes 1 electric motor units, has k=1 to concentrated armature winding in each electric motor units.So the number of elementary 11 magnetic teeth 110 is Ns=4*m*k*n=12, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is successively 2*m*k*n=6, from first magnetic teeth 110, in every two magnetic teeth 110, cover has a concentrated armature winding 111, and adjacent concentrated armature winding 111 shares a groove; M*k*n=3 central excitation winding 112 is set gradually and each central excitation winding 112 overlaps two magnetic teeth in all the other 2*m*k*n=6 groove, namely from second magnetic teeth 110, each central excitation winding 112 overlaps two magnetic teeth 110, and every two central excitation windings, one, 112 intervals groove, the magnetic direction that central excitation winding 112 produces is identical.Secondaryly be made up of teeth groove type permeability magnetic material, the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1), works as m=3, when k=1, n=1, and τ
s/ τ
p=12/5,12/7 or τ
s/ τ
p≈ 12/5,12/7, the present embodiment gets τ
s/ τ
p=12/7.
Due to k=1 in the present embodiment, therefore in three-phase set, armature winding 111 number is 6, each concentrated armature winding 111 overlaps two magnetic teeth 110, adjacent two concentrate armature winding to share a groove, the logarithm of the concentrated armature winding 111 that any phase armature winding is connected is k=1, wherein belong to out of phase armature winding A, B, C is alternately placed in armature winding magnetic teeth 110 successively, two the concentrated armature winding 111 belonging to homophase form k=1 to armature winding in complementary sets, two concentrated armature winding 111 with secondary 10 relative position differ half level pole span, corresponding electromagnetic property spatially differs 180 degree of electric angles.As A phase in Fig. 1 two concentrates armature winding A1 and A2.Now, armature winding A1 is concentrated to stride across two magnetic teeth, its center line faces the center line of secondary 10 teeth, and concentrate the center line of armature winding A2 to face the center line of secondary 10 grooves, the two with secondary 10 relative position differ half level 10 pole span, spatially difference 180 degree of electric angles.The magnetic direction produced due to excitation winding is identical, rationally arranges armature winding A1, and the winding mode of A2 can make to produce back electromotive force in the two and mutually superpose.Therefore, after central excitation winding 112 passes into direct current, the back-emf first-harmonic value concentrating armature winding A1 and A2 to be composed in series A phase winding is about 2 times of back-emf first-harmonic value in each concentrated armature winding.But when in elementary 11 motions electrical cycle 360 ° of (that is, running secondary 10 pole spans) processes, there is the difference on magnetic circuit in concentrated armature winding A1 and A2 of A phase and secondary 10 relative positions.As shown in Figure 1 during position, as supposition now concentrates the magnetic linkage in armature winding A1 to be approximately zero, be called the first equilbrium position, the magnetic linkage in armature winding A2 is now concentrated also to be approximately zero, because concentrated armature winding A2 is different from the position of A1 relative secondary, differ half level 10 pole span, therefore this position is called the second equilbrium position.Move right in an electrical cycle process elementary 11, A phase concentrates magnetic linkage amplitude change procedure in armature winding A1 to be:---positive maximum amplitude---the second equilbrium position---negative maximum amplitude---the first equilbrium position, the first equilbrium position;---positive maximum amplitude---the first equilbrium position---negative maximum amplitude---the second equilbrium position and magnetic linkage amplitude change procedure is in the concentrated armature winding A2 of A phase: the second equilbrium position.Therefore, the magnetic linkage variation tendency symmetrical complement in two parts armature winding.A phase concentrates in armature winding A1 and A2 the magnetic linkage produced be all bipolarity magnetic linkage (that is, have just having negative), and this feature is different from the electric field excitation linear motor of traditional double-salient-pole.A phase concentrates the counter potential waveform produced in armature winding A1 and A2 also to have symmetry, after being composed in series A phase winding, its harmonic component is cancelled out each other, and the opposite potential obtained has good sinuso sine protractor, thus reduce force oscillation, be highly suitable for brushless ac (BLAC) and control.
B, C two-phase has the feature of A phase equally, phase place mutual deviation 120 ° of electrical degrees between three-phase.
When motor needs to operate in high speed, reduce the size of DC excitation electric current, thus reduce the excitation field intensity of motor, reach speed governing object.When needing during low speed to increase motor thrust, DC excitation electric current can be increased, improve thrust output.
Embodiment 2
Fig. 2 is also a magnetic circuit complementary primary electricity field excitation linear motor.In the present embodiment, k=1, n=2, m=3, that is, this motor is three phase electric machine, includes 2 electric motor units, has k=1 to concentrated armature winding in each electric motor units.So the number of elementary 11 magnetic teeth 110 is Ns=4*m*k*n=24, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is successively 2*m*k*n=12, from first magnetic teeth 110, in every two magnetic teeth 110, cover has a concentrated armature winding 111, and adjacent concentrated armature winding 111 shares a groove; M*k*n=6 central excitation winding 112 is set gradually and each central excitation winding 112 overlaps two magnetic teeth in all the other 2*m*k*n=12 groove, namely from second magnetic teeth 110, each central excitation winding 112 overlaps two magnetic teeth 110, and every two central excitation windings, one, 112 intervals groove, the magnetic direction that central excitation winding 112 produces is identical.Secondaryly be made up of teeth groove type permeability magnetic material, the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1), works as m=3, when k=1, n=2, and τ
s/ τ
p=12/5,12/7 or τ
s/ τ
p≈ 12/5,12/7, the present embodiment gets τ
s/ τ
p=12/7.Excitation winding coupled in series in elementary 11 in first electric motor units forms the first excitation winding unit, and A phase armature winding is by two concentrated armature winding A1, and A2 is composed in series.Concentrate armature winding A1 and A2 and secondary relative position mutual deviation half level pole span, corresponding 180 degree of electric angles.Therefore, concentrate armature winding A1 and A2 to have complementary characteristic, when the two is composed in series A phase winding, wherein produced back-emf harmonic content is cancelled out each other, and opposite potential is more sinusoidal.Equally, the central excitation winding 112 in the second electric motor units and concentrated armature winding A3 and A4 also have the characteristic of the first electric motor units, therefore, concentrate between armature winding A3 and A4 and also have complementary characteristic.First excitation winding unit and the second excitation winding unit can form excitation winding by serial or parallel connection, as the concentrated armature winding A1 in two electric motor units, A2, when A3 and A4 is composed in series A phase winding, the back-emf high order harmonic component produced in concentratred winding is cancelled out each other, and A phase winding back-emf fundamental voltage amplitude is approximately concentratred winding A1, A2, four times of A3 and A4 fundamental voltage amplitude, have good sine.
Embodiment 3
Fig. 3 is also a magnetic circuit complementary primary electricity field excitation linear motor.In the present embodiment, k=2, n=1, m=3, namely this motor is three phase electric machine, include 1 electric motor units, have k=2 in each electric motor units to concentrated armature winding, so the number of elementary 11 magnetic teeth 110 is Ns=4*m*k*n=24, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is successively 2*m*k*n=12, from first magnetic teeth 110, in every two magnetic teeth 110, cover has a concentrated armature winding 111, and adjacent concentrated armature winding 111 shares a groove; M*k*n=6 central excitation winding 112 is set gradually and each central excitation winding 112 overlaps two magnetic teeth in all the other 2*m*k*n=12 groove, namely from second magnetic teeth 110, each central excitation winding 112 overlaps two magnetic teeth 110, and every two central excitation windings, one, 112 intervals groove, the magnetic direction that central excitation winding 112 produces is identical.Secondaryly be made up of teeth groove type permeability magnetic material, the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1), works as m=3, when k=2, n=1, and τ
s/ τ
p=24/11,24/13 or τ
s/ τ
p≈ 24/11,24/13, the present embodiment gets τ
s/ τ
p=24/13.Visible, the logarithm of the concentrated armature winding 111 that any phase armature winding of the present embodiment motor is connected is k=2, from first concentrated armature winding, the concentrated armature winding 111 of k=2 placed adjacent is had to belong to same phase (as concentrated armature winding A1 in Fig. 3, A1 ' belongs to A phase), thereafter k=2 the concentrated armature winding 111 belonging to adjacent phase is arranged alternately successively, according to above-mentioned arrangement mode.According to above-mentioned arrangement mode, in three-phase set, the arrangement mode of armature winding is: A1A1 '-B1B1 '-C1C1 '-A2A2 '-B2B2 '-C2C2 '.2k=4 the concentrated armature winding 111 belonging to homophase forms k=2 to armature winding in complementary sets, wherein concentrates for any pair two the concentrated armature winding (as concentrated armature winding A1 and A2 or A1 ' and A2 ') in armature winding to differ half level pole span τ with secondary relative position
s, correspond to 180 degree of electric angles, form complementary structure, when being composed in series a phase winding, the back-emf harmonic wave in complementary concentrated armature winding is cancelled out each other, and phase electromotive force is more sinusoidal.What deserves to be explained is, because concentrated armature winding A1 and A1 ', A2 and A2 ' are more close with the relative position of secondary 10, concentratred winding A1, A1 ', A2 and A2 ' when being composed in series A phase winding, A phase winding back-emf amplitude is slightly smaller than concentratred winding A1, A1 ', A2 and A2 ' four times of fundamental voltage amplitude.
Embodiment 4
Fig. 4 is five phase magnetic circuit complementary primary electricity field excitation linear motors.In the present embodiment, k=1, n=1, m=5, namely this motor is five-phase induction motor, include 1 electric motor units, k=1 is had to concentrated armature winding in each electric motor units, so the number of elementary 11 magnetic teeth 110 is Ns=4*m*k*n=20, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is successively 2*m*k*n=10, and each concentrated armature winding 111 overlaps two magnetic teeth 110, from first magnetic teeth 110, in every two magnetic teeth 110, cover has a concentrated armature winding 111, and adjacent two concentrate armature winding to share a groove; M*k*n=5 central excitation winding 112 is set gradually and each central excitation winding 112 overlaps two magnetic teeth in all the other 2*m*k*n=10 groove, namely from second magnetic teeth 110, each central excitation winding 112 overlaps two magnetic teeth 110, and every two central excitation windings, one, 112 intervals groove, the magnetic direction that central excitation winding 112 produces is identical.Secondaryly be made up of teeth groove type permeability magnetic material, the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1), works as m=5, when k=1, n=1, and τ
s/ τ
p=20/9,20/11 or τ
s/ τ
p≈=20/9,20/11, the present embodiment gets τ
s/ τ
p=20/11.
In the present embodiment five-phase induction motor, every phase winding concentrates armature winding to be composed in series by two, and as A phase winding concentrates armature winding A1 and A2 to be composed in series by two, the same armature winding A1 and concentrated armature winding A2 that concentrates spatially differs 180 degree of electric angles.Therefore, this motor has magnetic circuit complementary characteristic proposed by the invention equally, and the back-emf harmonic component produced in every phase armature winding is cancelled, and sine degree of back electromotive force is good, and thrust calculation is little, is specially adapted to BLAC operational mode.
Embodiment 5
Fig. 5 is a three-phase bilateral magnetic circuit complementary primary electricity field excitation linear motor, the present embodiment Fig. 5 motor can be developed by two identical embodiment 1 motor overturnings and obtain, upset evolutionary step is as follows: embodiment 1 motor is done flip vertical downwards, merge secondary 10 of two motors, simultaneously by contrary for the exciting current direction in elementary 11 corresponding excitation magnetic teeth 110 up and down, the excitation field on every one side is through its excitation winding place magnetic teeth 110, elementary yoke portion, air gap, secondary and armature winding place magnetic teeth 110 forms parallel circuits, a kind of bilateral magnetic circuit complementary primary electricity field excitation linear motor can be obtained.In addition, by multiple the present embodiment motor, also can obtain multiple new motor module according to the method for embodiment 2,3 and 4, the present invention no longer describes in detail.
Embodiment 6
Fig. 6 is a three-phase magnetic circuit complementary primary electricity field excitation linear motor, the difference of the present embodiment and embodiment 1 motor is only, the present embodiment is from second magnetic teeth 110, each central excitation winding 112 overlaps two adjacent magnetic teeth 110, adjacent central excitation winding 112 shares a groove, and the magnetic direction that in Neighbor Set, excitation winding 112 produces is contrary, the present embodiment motor possesses the feature of motor of the present invention equally.
Embodiment 7
Fig. 7 is a three-phase magnetic circuit complementary primary electricity field excitation linear motor, the difference of the present embodiment and embodiment 1 motor is only, elementary 11 both sides of the present embodiment respectively increase an additional magnetic teeth 113, described additional magnetic teeth 113 is not provided with concentrated armature winding 111 and is not also provided with central excitation winding 112, therefore the present embodiment motor possesses the feature of motor of the present invention equally.
Embodiment 8
Fig. 8 is a three-phase magnetic circuit complementary primary electricity field excitation linear motor, the difference of the present embodiment and embodiment 7 motor is only, the excitation winding 112 of this enforcement motor is from additional magnetic teeth 113, in every two magnetic teeth 110, cover has a central excitation winding 112, adjacent central excitation winding 112 shares a groove, and the magnetic direction that in Neighbor Set, excitation winding 112 produces is contrary.
With elementary 11 or secondary 10 of magnetic circuit complementary primary of the present invention electricity field excitation linear motor for fixed part, another is moving component, with elementary 11 upper edges or secondary 10 lower edges for axle flip vertical, can form the motor of bilateral slab construction; Or rotate for axle with elementary 11 upper edges or secondary 10 lower edges, the motor of cylindrical structure can be formed.
The magnetic direction that in this motor, central excitation winding 112 produces can be the same or different, and when magnetic direction is identical, effect is better.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (8)
1. a magnetic circuit complementary primary electricity field excitation linear motor, comprise elementary (11) and secondary (10), described elementary (11) and secondary (10) form by permeability magnetic material and have air gap therebetween, described elementary (11) are provided with magnetic teeth (110), magnetic teeth has groove between (110), magnetic teeth (110) is arranged alternately concentrated armature winding (111) and central excitation winding (112), it is characterized in that
The number of described elementary (11) magnetic teeth (110) is Ns=4*m*k*n, and adjacent two magnetic teeth distances between center line are elementary pole span τ
p; Described concentrated armature winding (111) is wound on central excitation winding (112) outside, wherein, magnetic teeth (110) is wound with 2*m*k*n concentrated armature winding (111) successively, from first magnetic teeth (110), the upper cover of every two magnetic teeth (110) has a concentrated armature winding (111), and adjacent concentrated armature winding (111) shares a groove; From second magnetic teeth (110), each central excitation winding (112) overlaps two adjacent magnetic teeth (110), and one, interval groove between every two central excitation windings (112), or, from second magnetic teeth (110), each central excitation winding (112) overlaps two adjacent magnetic teeth (110), and adjacent central excitation winding (112) shares a groove;
Described secondary (10) are made up of teeth groove type permeability magnetic material, and the magnetic teeth (110) of secondary magnetic teeth and elementary (11) is oppositely arranged, and the distance between center line of adjacent twice level magnetic teeth is secondary pole span τ
s, τ
s/ τ
p=4*m*k/(2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/(2*m*k ± 1);
Wherein, m is the number of phases of motor, n and k is positive integer, and n is electric motor units number, and k is concentrated armature winding (111) logarithm of any phase armature winding series connection in each electric motor units.
2. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1, it is characterized in that, the central excitation winding (112) in each electric motor units is for being connected in series; When between every two central excitation windings (112) during the groove in interval, the magnetic direction that central excitation winding (112) produces is identical; When every two central excitation windings (112) share a groove, the magnetic direction that in Neighbor Set, excitation winding (112) produces is contrary, the excitation winding units in series between n electric motor units or parallel connection.
3. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1, it is characterized in that, in each electric motor units, any phase armature winding is composed in series concentrated armature winding (111) by k, from first concentrated armature winding (111), the concentrated armature winding (111) of k placed adjacent is had to belong to same phase, thereafter k the concentrated armature winding (111) belonging to adjacent phase is set gradually, according to above-mentioned arrangement mode, 2k the concentrated armature winding (111) belonging to homophase forms k to armature winding in complementary sets, two concentrated armature winding (111) in armature winding are wherein concentrated for any pair to differ half level (10) pole span τ with the relative position of secondary (10)
s, correspond to 180 degree of electric angles, the two has complementary characteristic, and n electric motor units sets gradually, and the concentrated armature winding (111) belonging to homophase in different electric motor units is connected in series or in parallel.
4. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1, it is characterized in that, this motor is also included in elementary (11) two ends respectively increases an additional magnetic teeth (113).
5. a kind of magnetic circuit complementary primary electricity field excitation linear motor with additional teeth according to claim 4, it is characterized in that, this motor is from additional magnetic teeth (113), the upper cover of every two magnetic teeth (110) has a central excitation winding (112), adjacent central excitation winding (112) shares a groove, and the magnetic direction that in Neighbor Set, excitation winding (112) produces is contrary.
6. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1, it is characterized in that, described central excitation winding (112) and concentrated armature winding (111) are copper or superconductor.
7. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1 to 6 any one, it is characterized in that, with described elementary (11) or secondary (10) for fixed part, another is moving component, be axle flip vertical with elementary (11) upper edge or secondary (10) lower edge, form the motor of bilateral slab construction; Or with the motor that elementary (11) upper edge or secondary (10) lower edge are axle rotation, formation cylindrical structure.
8. a kind of magnetic circuit complementary primary electricity field excitation linear motor according to claim 1 to 6 any one, is characterized in that, described a kind of magnetic circuit complementary primary electricity field excitation linear motor is motor or generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN104967274A (en) * | 2015-06-30 | 2015-10-07 | 奇瑞汽车股份有限公司 | Linear motor |
| CN107493002A (en) * | 2017-08-16 | 2017-12-19 | 中国石油大学(华东) | One kind easily opens up mutually primary high-temperature superconductor field excitation linear motor |
| CN109599974A (en) * | 2018-12-24 | 2019-04-09 | 浙江大学 | A kind of Three-phase Single-layer Windings motor that span is 2 |
| CN109962598A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of segmented secondary formula magnetic circuit complementary type primary permanent magnet linear |
| CN110649783A (en) * | 2019-09-26 | 2020-01-03 | 哈尔滨工业大学 | Mixed excitation linear reluctance motor system |
| CN112600383A (en) * | 2021-03-03 | 2021-04-02 | 西南交通大学 | Double-fed linear motor structure with long stator hollow winding and double sides |
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| CN104967274A (en) * | 2015-06-30 | 2015-10-07 | 奇瑞汽车股份有限公司 | Linear motor |
| CN107493002A (en) * | 2017-08-16 | 2017-12-19 | 中国石油大学(华东) | One kind easily opens up mutually primary high-temperature superconductor field excitation linear motor |
| CN109599974A (en) * | 2018-12-24 | 2019-04-09 | 浙江大学 | A kind of Three-phase Single-layer Windings motor that span is 2 |
| CN109962598A (en) * | 2019-04-26 | 2019-07-02 | 南京航空航天大学 | A kind of segmented secondary formula magnetic circuit complementary type primary permanent magnet linear |
| CN110649783A (en) * | 2019-09-26 | 2020-01-03 | 哈尔滨工业大学 | Mixed excitation linear reluctance motor system |
| CN112600383A (en) * | 2021-03-03 | 2021-04-02 | 西南交通大学 | Double-fed linear motor structure with long stator hollow winding and double sides |
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Application publication date: 20150520 Assignee: Quantong Intelligent Technology (Shanghai) Co.,Ltd. Assignor: Nanjing University of Aeronautics and Astronautics Contract record no.: X2022980028489 Denomination of invention: Magnetic circuit complementary primary electric excitation linear motor Granted publication date: 20171124 License type: Common License Record date: 20221230 |