CN204442044U - Segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor - Google Patents
Segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor Download PDFInfo
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Abstract
The utility model discloses segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor, comprise primary and secondary, its magnetic teeth is arranged alternately concentrated armature winding and central excitation winding, the magnetic field that any one central excitation winding produces is contrary with the magnetic direction that the central excitation winding nearest apart from it produces; Primary magnetic conduction tooth is provided with 2*m*k*n concentrated armature winding and 2*m*k*n+1 central excitation winding; Describedly secondaryly be provided with segmentation magnetic inductive block, the ratio of secondary and elementary pole span is at or about 4*m*k/ (2*m*k ± 1).The utility model motor has simple, the every phase back-emf of brushless, secondary minor structure symmetrical and the features such as near sinusoidal, thrust calculation are little, elementary excitation, can be used for the fields such as urban track traffic drive system, vertical hoisting system, electromagnetic ejection system; Also being applicable to the occasions such as seawave power generation, by regulating the size of exciting current, thus reaching the effect that speed constant pressure exports and constant speed transformation exports.
Description
Technical field
The utility model relates to a kind of primary electrical field excitation linear motor, what be specifically related to is segmented secondary formula 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.The requirement of every field to drive motors and system is more and more higher, the type of drive adopting electric rotating machine and mechanical switching device rotary motion to be converted to rectilinear motion more and more can not meet corresponding requirements, and adopt linear electric motors driving to reduce costs, reduce system bulk, noise decrease.In occasions such as such as track traffic, high-rise building elevator, factory's transports, adopt electric rotating machine there will be and drive the problems such as complicated, cost is high, dynamic response is slow.Therefore, adopt linear electric motors to replace this technological means of electric rotating machine, the above-mentioned shortcoming of electric rotating machine in application can be overcome, improve the efficiency of whole system.
Current line inductance electromotor is applied in Guangzhou Underground circuit.Line inductance electromotor structure is simple, and easy to maintenance, system cost is low, plays a significant role in urban track traffic drives.But, linear induction engine efficiency and power factor low, speed adjusting performance is not good, and control complicated, performance still cannot compared with direct current machine.
Linear permanent magnet synchronous motor does not have excitation winding, has that efficiency is high, power density advantages of higher.But the winding of traditional line permagnetic synchronous motor and permanent magnet are placed on the primary and secondary of motor respectively, in the long stator application scenarios such as track traffic, permanent magnet or armature winding can bring along track laying the problem that cost is excessive, safeguard inconvenience.And permanent magnet is exotic material, expensive, performance is responsive to the factor such as ambient temperature, mechanical oscillation, is not easy to realize weak magnetics detect, and control system is complicated, there is many shortcomings in track traffic application scenario.
Utility model content
Technical problem to be solved:
For the deficiency that prior art exists, the utility model object is to provide a kind of armature winding and excitation winding are all placed in elementary and can control separately, the magnetic circuit complementary primary electricity field excitation linear motor of back-emf near sinusoidal.
Technical scheme:
In order to realize above function, the utility model provides a kind of segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor, comprise elementary 11 and secondary 10, described elementary 11 and secondary 10 are all permeability magnetic material and have air gap therebetween, described elementary 11 are provided with magnetic teeth 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+1, and adjacent two magnetic teeth 110 distances between center line are elementary 11 pole span τ
p; Described magnetic teeth 110 is wound with 2*m*k*n+1 central excitation winding 112 and 2*m*k*n concentrated armature winding 111, the magnetic teeth 110 arranging central excitation winding 112 is called excitation winding magnetic teeth, the magnetic teeth 110 arranging concentrated armature winding 111 is called armature winding magnetic teeth, described secondary 10 are provided with segmentation magnetic inductive block, and adjacent two segmentation magnetic inductive block distances between center line are 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);
Described central excitation winding 112 and concentrated armature winding 111 are disposed alternately on primary magnetic conduction tooth 110, and the magnetic field that any one central excitation winding 112 produces is contrary with the magnetic direction that the central excitation winding 112 nearest apart from it produces;
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 for being connected in series, excitation winding element, the excitation winding units in series between each electric motor units or parallel connection.
Further, in each electric motor units, any phase armature winding is connected to concentrated armature winding 111 by k, from first concentrated armature winding 111, there is k the concentrated armature winding 111 be placed in adjacent armature winding magnetic teeth to belong to same phase, thereafter in armature winding magnetic teeth, be arranged alternately k the concentrated armature winding 111 belonging to adjacent phase successively, according to above-mentioned arrangement mode, 2k the concentrated armature winding 111 belonging to homophase forms k to armature winding in complementary sets 111, wherein concentrate for any pair two concentrated armature winding 111 in armature winding with secondary 10 relative position differ half level 10 pole span, correspond to 180 degree of electric angles, the two has complementary characteristic, n electric motor units sets gradually, the concentrated armature winding 111 belonging to homophase in different electric motor units is connected in series or in parallel.
Preferred as one, described central excitation winding 112 and concentrated armature winding 111 are copper or superconductor.
Preferred as one, this motor is also included in elementary 11 two ends respectively increases an additional magnetic teeth 113.
Preferred as one, this motor is also provided with a moving component, described elementary 11 and secondary 10 1 be fixed part, 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, form the motor of bilateral slab construction.
Preferred as one, described segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor is motor or generator.
Beneficial effect:
The segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor that the utility model provides is motor or generator, during as motor running, output-constant operation velocity interval can be improved by the size changing exciting current, during as generator operation, by changing the size of exciting current, back electromotive force constant under friction speed can be obtained.
The utility model, as the drive motors used time, is particularly suitable for wide range speed control and drives occasion, and such as urban track traffic drives linear electric motors etc. to need the application scenario of wide speed regulating range; The utility model is also particularly suitable as generator and uses, for occasions such as seawave power generations, this electric machine structure is simple, secondaryly only to be made up of magnetic inductive block, 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.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 1 electric machine structure schematic diagram;
Fig. 2 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 2 electric machine structure schematic diagram;
Fig. 3 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 3 electric machine structure schematic diagram;
Fig. 4 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 4 electric machine structure schematic diagram;
Fig. 5 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 5 electric machine structure schematic diagram;
Another electric machine structure schematic diagram of Fig. 6 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 5;
Fig. 7 the utility model segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor embodiment 6 electric machine structure schematic diagram.
Embodiment
The utility model provides a kind of segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor, and for making the purpose of this utility model, technical scheme and effect clearly, clearly, and further describe the utility model with reference to accompanying drawing examples.Should be appreciated that concrete enforcement described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
See Fig. 1, segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor of the present utility model comprises 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 central excitation winding 112 and concentrated armature winding 111.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+1=13, the number that magnetic teeth 110 is provided with central excitation winding 112 is 2*m*k*n+1=7, and the number being provided with concentrated armature winding 111 is 2*m*k*n=6; Secondary 10 is τ with the ratio of elementary 11 pole spans
s/ τ
p=4*m*k/ (2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/ (2*m*k ± 1), desirable 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.Central excitation winding 112 and concentrated armature winding 111 are disposed alternately on primary magnetic conduction tooth 110, and the magnetic field that any one central excitation winding 112 produces is contrary with the magnetic direction that the central excitation winding 112 nearest apart from it produces.
In each electric motor units of the utility model motor, central excitation winding 112 and concentrated armature winding 111 are disposed alternately on primary magnetic conduction tooth 110, the number of central excitation winding 112 is 2*m*k*n+1, the number concentrating armature winding 111 is 2*m*k*n, the logarithm of the concentrated armature winding 111 that any phase armature winding is connected is k, the magnetic teeth 110 arranging concentrated armature winding 111 is called armature winding magnetic teeth, and the magnetic teeth 110 arranging central excitation winding 112 is called excitation winding magnetic teeth, m phase armature winding arrangement mode spatially has following features, from first concentrated armature winding 111, there is k the concentrated armature winding 111 be placed in adjacent armature winding magnetic teeth to belong to same phase, thereafter in armature winding magnetic teeth, be arranged alternately k the concentrated armature winding 111 belonging to adjacent phase successively, 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, correspond to 180 degree of electric angles, when being composed in series a phase winding, back-emf harmonic wave in complementary concentrated armature winding is cancelled out each other, phase electromotive force is more sinusoidal.The on-link mode (OLM) of the phase armature winding of n electric motor units is identical, and the excitation winding in each electric motor units is composed in series excitation winding unit, and the excitation winding of n electric motor units is that serial or parallel connection connects.
Due to k=1 in the present embodiment, therefore the number being disposed alternately at the concentrated armature winding 111 of on primary magnetic conduction tooth 110 is 6, the number of central excitation winding 112 is 7, wherein belong to out of phase armature winding A, B, C is alternately placed in armature winding magnetic teeth 110 successively, 2 the concentrated armature winding 111 belonging to homophase form armature winding in 1 pair of complementary sets, two concentrated armature winding 111 with secondary 10 relative position differ half level 10 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, the elementary 11 tooth center lines at armature winding A1 place are concentrated to face secondary 10 module centers lines, and the elementary 11 tooth center lines at concentrated armature winding A2 place face the center line between twice level 10 modules, the two with secondary 10 relative position differ half level 10 pole span, the two spatially differs 180 degree of electric angles.By rationally arranging A1, A2 coiling, can make the two back-emf 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 elementary 11 move in an electrical cycle 360 ° (that is, moving secondary 10 pole spans) process, 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 10, 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, and 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 reduces force oscillation.
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.
Embodiment 2
Fig. 2 is also a segmented secondary formula 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 its elementary 11 magnetic teeth 110 is Ns=4*m*k*n+1=25, and the number that magnetic teeth 110 is provided with concentrated armature winding 111 is 2*m*k*n=12, the number being provided with central excitation winding 112 is 2*m*k*n+1=13; The ratio of secondary and elementary pole span is τ
s/ τ
p=4*m*k/ (2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/ (2*m*k ± 1), desirable 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 the magnetic direction that adjacent two central excitation windings produce is contrary, and A phase armature winding is by two concentrated armature winding A1, and A2 is composed in series.Concentrate relative position mutual deviation half level 10 pole span of armature winding A1 and A2 and secondary 10, 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 sinuso sine protractor.
Embodiment 3
Fig. 3 is also a segmented secondary formula 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, includes 1 electric motor units, k=2 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+1=25, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is 2*m*k*n=12, and the number being provided with central excitation winding 112 is 2*m*k*n+1=13; The ratio of secondary and elementary pole span is τ
s/ τ
p=4*m*k/ (2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/ (2*m*k ± 1), desirable 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 central excitation winding 112 of the present embodiment motor and concentrated armature winding 111 are disposed alternately on primary magnetic conduction tooth 110, the logarithm of the concentrated armature winding 111 that any phase armature winding is connected is k=2, threephase armature winding arrangement mode spatially has following characteristics, from first concentrated armature winding, having k=2 to be placed in two adjacent armature winding magnetic teeth concentrates armature winding to belong to same phase (as Fig. 3 concentrates armature winding A1, A1 ' belongs to A phase), thereafter in armature winding magnetic teeth, be arranged alternately k the concentrated armature winding belonging to adjacent phase successively, 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 belonging to homophase forms k=2 to armature winding in complementary sets, two the concentrated armature winding (as concentrated armature winding A1 and A2 or A1 ' and A2 ') in armature winding are wherein concentrated for any pair to differ half level pole span with secondary relative position, correspond to 180 degree of electric angles, form complementary structure, when being composed in series a phase winding, 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 segmented secondary formula 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, includes 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+1=21, the number that magnetic teeth 110 is provided with concentrated armature winding 111 is 2*m*k*n=10, and the number being provided with central excitation winding 112 is 2*m*k*n+1=11; The ratio of secondary and elementary pole span is τ
s/ τ
p=4*m*k/ (2*m*k ± 1) or τ
s/ τ
p≈ 4*m*k/ (2*m*k ± 1), desirable 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, as A phase winding concentrates armature winding A1 and A2 to form by two, now, concentrate the elementary tooth center line at armature winding A1 place to face secondary module center line, and the elementary tooth center line at concentrated armature winding A2 place face the center line between two secondary module.Therefore, this motor has the magnetic circuit complementary characteristic that the utility model proposes 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.
Embodiment 5
Fig. 5 and Fig. 6 is a three-phase bilateral segmented secondary formula 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 as follows: by embodiment 1 motor with elementary 11 upper edges for axially to do flip vertical, the elementary 11 yoke portions of two motors are overlapped, reduce or remove elementary 11 yoke portions, can obtain a kind of elementary without the secondary bilateral electric field excitation linear motor in yoke portion.Exciting current direction up and down in elementary 11 corresponding excitation magnetic teeth 110 is consistent, and excitation field forms series circuit through excitation winding place magnetic teeth 110, air gap, secondary magnetic inductive block and armature winding place magnetic teeth 110.The present embodiment feature elementary 11 is subject to the bilateral Normal Force of secondary 10 and cancels out each other, thus reduce the frictional dissipation of system; Save elementary 11 yoke portion materials, reduce system cost, improve dynamic property.The present embodiment Fig. 6 motor also 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 with secondary 10 lower edges under axis, 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 magnetic inductive block and armature winding place magnetic teeth 110 thereof form parallel circuits, a kind of bilateral segmented secondary formula 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 utility model no longer describes in detail.
Embodiment 6
Fig. 7 is also 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, and therefore the present embodiment motor possesses the feature of the utility model motor equally.
The primary and secondary one of magnetic circuit complementary primary electricity field excitation linear motor of the present utility model is fixed part, and another is moving component, and its structure is limit slab construction, or forms bilateral slab construction, may operate in motor or Generator Status.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor, comprise elementary (11) and secondary (10), described elementary (11) and secondary (10) are all permeability magnetic material and have air gap therebetween, described elementary (11) are provided with magnetic teeth (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+1, and adjacent two magnetic teeth (110) distance between center line is elementary (11) pole span τ
p; Described magnetic teeth (110) is wound with 2*m*k*n+1 central excitation winding (112) and 2*m*k*n concentrated armature winding (111), the magnetic teeth (110) arranging central excitation winding (112) is called excitation winding magnetic teeth, the magnetic teeth (110) arranging concentrated armature winding (111) is called armature winding magnetic teeth, described secondary (10) are provided with segmentation magnetic inductive block, and adjacent two segmentation magnetic inductive block distances between center line are 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);
Described central excitation winding (112) and concentrated armature winding (111) are disposed alternately on primary magnetic conduction tooth (110), and the magnetic field that any one central excitation winding (112) produces is contrary with the magnetic direction that the central excitation winding (112) nearest apart from it produces;
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. segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor according to claim 1, it is characterized in that, central excitation winding (112) in each electric motor units for being connected in series, excitation winding element, the excitation winding units in series between n electric motor units or parallel connection.
3. segmented secondary formula 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 connected to concentrated armature winding (111) by k, from first concentrated armature winding (111), there is k the concentrated armature winding (111) be placed in adjacent armature winding magnetic teeth to belong to same phase, thereafter in armature winding magnetic teeth, be arranged alternately k the concentrated armature winding (111) belonging to adjacent phase successively, according to above-mentioned arrangement mode, 2k the concentrated armature winding (111) belonging to homophase forms k to armature winding in complementary sets (111), two concentrated armature winding (111) in armature winding are wherein concentrated for any pair to differ half level (10) pole span with the relative position of secondary (10), correspond to 180 degree of electric angles, the two has complementary characteristic, n electric motor units sets gradually, the concentrated armature winding (111) belonging to homophase in different electric motor units is connected in series or in parallel.
4. segmented secondary formula 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.
5. segmented secondary formula 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).
6. the segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor according to claim 1 to 5 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.
7. the segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor according to claim 1 to 5 any one, is characterized in that, described segmented secondary formula magnetic circuit complementary primary electricity field excitation linear motor is motor or generator.
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| CN107465327A (en) * | 2017-07-07 | 2017-12-12 | 南京航空航天大学 | Electric excitation biconvex electrode linear electric motors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465327A (en) * | 2017-07-07 | 2017-12-12 | 南京航空航天大学 | Electric excitation biconvex electrode linear electric motors |
| CN107465327B (en) * | 2017-07-07 | 2019-07-09 | 南京航空航天大学 | Electric excitation biconvex electrode linear motor |
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