CN104167896B - A kind of T-shaped magnetic flux switching permanent-magnetism linear motor and module thereof - Google Patents
A kind of T-shaped magnetic flux switching permanent-magnetism linear motor and module thereof Download PDFInfo
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- CN104167896B CN104167896B CN201410387913.3A CN201410387913A CN104167896B CN 104167896 B CN104167896 B CN 104167896B CN 201410387913 A CN201410387913 A CN 201410387913A CN 104167896 B CN104167896 B CN 104167896B
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Abstract
The invention discloses a kind of module complementary type magnetic flux switching permanent-magnetism linear motor, including primary and secondary, described primary and secondary is salient-pole structure, there is air gap between described primary and secondary；Described primary includes primary iron core, permanent magnet, non-magnetic piece, armature winding, the magnetic teeth that described primary iron core forms magnetic teeth, described permanent magnet and its both sides constitutes a T-shaped unit, and described primary includes N*m T-shaped unit, N is the coil number in every phase winding, and m is the number of phases of motor；Every i described T-shaped unit constitutes a module.Such motor has complementary symmetry, reduce the difficulty of processing and manufacturing, and the magnetic linkage waveform of motor and back emf waveform symmetrical, sinusoidal, force oscillation is substantially reduced, be particularly well-suited to City Rail Transit System, factory transport drive apparatus and elevator isoline drive occasion.
Description
Technical field
The present invention relates to a kind of novel module complementary type magnetic flux switching permanent-magnetism linear motor and the motor module of composition thereof, be specifically related to electrician, technical field of motor manufacture.
Background technology
Along with the development of industrial technology, linear drive system is widely applied.Compared with traditional electric rotating machine drive system, linear electric motors drive can save the conversion equipment converting rotational motion into linear motion, substantially reduces mechanical friction, it is possible not only to reduce cost, but also reduce noise, reduce maintenance cost, energy-conservation environmental protection again.Particularly in field of urban rail, the shortcoming such as the traditional poor stability of electric rotating machine drive system, efficiency are low governs its development always, and use driving system of linear motor to replace electric rotating machine to drive, the harmful effect that electric rotating machine drive system can be overcome well to be brought in field of urban rail, improves the efficiency of whole system simultaneously.
In recent years, along with power electronics and the development of magnetic material, permanent magnetic brushless has obtained rapid development.It is high that this type of motor has efficiency, and power density advantages of higher, it has also had both the two-fold advantage of magneto and linear electric motors simultaneously.Compared with line inductance electromotor, the energy index of permanent magnetic linear synchronous motor is high, lightweight, volume is little, and has dynamic brake function.But, owing to permanent magnet and the armature winding of traditional magneto are separately mounted to primary and secondary, and the cost of permanent magnet and armature is the highest, the longest primary short secondary drive system still secondary drive system long to short primary can be brought the most undoubtedly the increase of system cost.
At present, the rotary-type flux switch permanent magnet motor of bipolarity magnetic linkage just gets more and more people's extensive concerning, and it has higher power density.Permanent magnet and armature winding are both placed on stator, on rotor without winding, brushless, without permanent magnet, be only made up of permeability magnetic material, the advantages such as it is high that such motor has power density, simple in construction, it is easy to heat radiation, high efficiency, high reliability.For its linear structure, it is exactly that rotational structure is radially cut open, stator in rotational structure has reformed into the primary in linear structure, rotor has reformed into secondary, in view of the secondary of linear structure is only made up of permeability magnetic material, not having permanent magnet and winding, therefore such linear electric motors are particularly well-suited to short primary long secondary occasion, such as Rail Transit System etc..But, the magnetic flux positive-negative half-cycle of the end phase winding of tradition magnetic flux switching straight line motor is asymmetric, thus causes the parameter unbalances such as each opposite potential and inductance.Traditional modular magnetic flux switching straight line motor does not accounts for the complementarity of every phase winding and structure, there is every phase magnetic linkage and back-emf positive-negative half-cycle is asymmetric, the shortcomings such as detent force is big.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is therefore intended that propose oneThe module complementary type magnetic flux switching permanent-magnetism linear motor of type and the motor module of composition thereof, this motor has complementary symmetry, the magnetic linkage waveform of motor and counter potential waveform are symmetrical, sinusoidal, and the structure of complementation greatly reduces the detent force of motor, enhance motor reliability of operation.
For solving above-mentioned technical problem, the technical scheme that the present invention provides is:
A kind of module complementary type magnetic flux switching permanent-magnetism linear motor, including primary and secondary, described primary and secondary is salient-pole structure, there is air gap between described primary and secondary；Described primary includes that primary iron core, permanent magnet, non-magnetic piece, armature winding, the magnetic teeth that described primary iron core forms magnetic teeth, described permanent magnet and its both sides constitute oneType unit, described primary includes N*mType unit, N is the coil number in every phase winding, and m is the number of phases of motor；Described in every iType unit constitutes a module, fills described non-magnetic piece between adjacent two described modules；Described armature winding is installed in teeth groove, and the coil of an armature winding strides across one piece of permanent magnet and two pieces of primary iron cores form concentratred winding structure；Relative displacement between adjacent two out-phase in described module is 1/ (2m) * τsTime, two homophasesRelative displacement between type unit is λ1=(k ± 1/2) * τs, out-phase in adjacent two modulesRelative displacement between type unit is λ2=(s+1/ (2m)) * τs, τsFor secondary pole span, k, s are positive integer；Relative displacement between adjacent two out-phase in described module is (1/m) * τsTime, two homophasesRelative displacement between type unit is λ1=k* τs, out-phase in adjacent two modulesRelative displacement between type unit is λ2=(s+1/m) * τs.To this end, the Design of Permanent Magnet of the present invention flexibly, magnetic linkage waveform and back emf waveform symmetrical sine, the advantage such as detent force is big compared with magnetic flux density little, air gap, thrust output is relatively strong, power density is higher, modularized design, short primary long secondary application occasion motor cost are low.The present invention is especially suitable for short primary long secondary structure linear electric motors application scenario, such as City Rail Transit System, factory's transporting equipment and elevator isoline and drive occasion.
Further, 1 secondary pole span τ is differed between said two modulesOr 1/2 secondary pole span τ of differences.Owing to a secondary pole span τ can be differed between two modules of these linear electric motorss(360 degree of electrical angles), it is also possible to differ 1/2 τs(180 degree of electrical angles).The width assuming non-magnetic piece is τm, for a three-phase windings, work as τm=τsTime, the order coiling successively according to " ABCABC ... " from left to right, and the direction of winding of each unit is completely the same；If working as τm=1/2 τsTime, order coiling successively still according to " ABCABC ... ", the coiling of two ends, left and right module or consistent, but the direction of winding of intermediate module is the most contrary with the direction of winding of other two modules, this structure can save the material of non-magnetic piece, thus shortens the effective length of electric motor primary；On the other hand, owing to modular structure designs, the phase contrast between modules can be regulated by the width of non-magnetic piece in the middle of regulation, thus arrive the purpose reducing detent force, design the most flexible.
Further, the number of described module is t, t is the positive integer more than or equal to 2, the position of described t module can arbitrarily exchange, and not necessarily order according to " ABCABC ... " arranges successively, now needs to meet: the relative displacement between adjacent two out-phase in same module is 1/ (2m) * τsTime, two homophasesRelative displacement between type unit is λ1=(k ± 1/2) * τsOr λ1=k τs, out-phase in adjacent two modulesRelative displacement between type unit is λ2=(s+1/ (2m)) * τsOr λ2=(s-1/m) * τs, τsFor secondary pole span, k, s are positive integer；Relative displacement between adjacent two out-phase in same module is (1/m) * τsTime, two homophasesRelative displacement between type unit is λ1=k τsOr λ1=(k ± 1/2) * τs, out-phase in adjacent two modulesRelative displacement between type unit is λ2=(s+1/m) * τsOr λ2=(s-1/ (2m)) * τs。
Further, described homophaseThe concentratred winding of type unit flexible combination by the way of in series or in parallel with each other.
Further, the secondary of described motor is made up of permeability magnetic material.Owing to secondary structure is simple (without winding, without permanent magnet), only it is made up of low-cost permeability magnetic material, make this invention be particularly well-suited to short primary long secondary application scenario such as such as urban track traffic, elevator drive system etc., so can be substantially reduced the cost of system.
Further, described two adjacent permanent magnets uses alternating parallel to magnetize, and do so can effectively prevent the generation of leakage field.
Further, the height of described permanent magnet is less than or equal to the height of magnetic teeth, and this improvement is so that permanent magnetism
The height adjustable of body, designs more flexible.
Further, described module includes j described modularity magnetic flux switching permanent-magnetism linear motor, and j is positive integer；J individual described modularity magnetic flux switching permanent-magnetism linear motor series and parallel constitutes an overall or the most individually control, thus adds system survivability.
The invention has the beneficial effects as follows: the permanent magnet of described motor and armature winding are both placed in primary, secondary structure is simple, without permanent magnet, without winding, brushless, is only made up of permeability magnetic material, has the advantages such as high efficiency, high power density, high reliability.And this motor has the structure of complementation, greatly reduces detent force so that motor more stably runs.Meanwhile, modular structure is conducive to producing, install and safeguarding, is particularly well-suited to short primary long secondary application scenario, can not only lower manufacturing cost, and safe and reliable.Compare with tradition magnetic flux switching permanent-magnetism linear motor, the advantages below that this design has:
1) armature winding and permanent magnet are respectively positioned on electric motor primary, it is simple to the cooling of motor；
2) modular design, greatly reduces manufacturing cost, facilitates production and safeguards, reducing the impact produced due to mutual inductance between phase and phase simultaneously, improves fault-tolerant ability when motor runs；
3) complementary structure design so that the sine degree of magnetic linkage and back emf waveform improves, and detent force is also obviously reduced, and motor runs more stable.
4) The primary interferric width of type magnetic flux switching permanent-magnetism linear motor leads to the little, therefore of switching permanent-magnetism linear motor than traditional E-type magneticThe teeth groove area of type motor wants big, i.e. the number of turn of armature winding can increased, and thus can makeWanting of the magnetic linkage of type motor and the peakedness ratio E type of back-emf is big, ultimately results inThe thrust of type motor wants big；In addition, E-type magnetic is led in switching straight line motor, permanent magnet width ratio motor of the present invention wants wide (but total permanent magnet consumption is identical), this allows for leading to serious a lot of than the present invention of the primary unshakable in one's determination degree of saturation of switching straight line motor in E-type magnetic, so the phenomenon of satiety unshakable in one's determination can only be alleviated by expanding primary width unshakable in one's determination, which results in the more of motor described in the primary amount ratio unshakable in one's determination of E type motor, add the load of primary.
5) describedThe magnetic linkage of type motor is more symmetrical than traditional type magnetic flux switching permanent-magnetism linear motor, because(in conventional motors, every phase winding has 4 coils respectively to inherit feature complementary between conventional motors homophase magnetic linkage in type motor, complementarity is there is) between each two coil, the most also balance the impact of end effect, so that the magnetic linkage of motor and back emf waveform are more symmetrical, sinusoidal.
6) additionally, the position of t module of described motor can arbitrarily exchange, and not necessarily order according to " ABCABC ... " arranges successively,The degree of modularity of type motor is higher than traditional, and the motility of design is higher, can go out meet the electric machine structure of condition according to different Demand Design.
Accompanying drawing explanation
Fig. 1 is each twoType unit one module of composition, the structural representation of a module complementary type magnetic flux switching permanent-magnetism linear motor in the present invention of totally 6 modules.
Fig. 2 is every fourType unit one module of composition, the structural representation of a module complementary type magnetic flux switching permanent-magnetism linear motor in the present invention of totally 3 modules.
Fig. 3 is the present invention and the magnetic linkage comparison of wave shape figure of tradition magnetic flux switching permanent-magnetism linear motor.
Fig. 4 is the present invention and and the detent force comparison of wave shape figure of tradition magnetic flux switching permanent-magnetism linear motor.
In figure: 1-basic module；2-armature winding；3-permanent magnet；Non-magnetic piece of 4-；5-is primary；6-level；7-Type unit.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the detailed description of the invention of the present invention is described further.
A kind of module complementary type magnetic flux switching permanent-magnetism linear motor, is salient-pole structure including primary 5 and secondary 6, described primary 5 and secondary 6, there is air gap between described primary 5 and secondary 6；Described primary 5 include primary iron core, permanent magnet 3, non-magnetic piece 4, armature winding 2, primary iron core in the middle of described primary iron core is all U-shaped, armature winding is installed in U-shaped teeth groove, and described primary iron core forms magnetic teeth, and the magnetic teeth of described permanent magnet 3 and its both sides constitutes oneType unit 7, described primary 5 include N*mType unit 7, N is the coil number in every phase winding, and m is the number of phases of motor；Described in every iType unit 7 constitutes a module 1, fills described non-magnetic piece 4 between adjacent two described modules 1；Described armature winding 2 is installed in teeth groove, and the coil of an armature winding 2 strides across one piece of permanent magnet 3 and two pieces of primary iron cores form concentratred winding structure；Relative displacement between adjacent two out-phase in same module 1 is 1/ (2m) * τsTime, two homophasesRelative displacement between type unit 7 is λ1=(k ± 1/2) * τs, out-phase in adjacent two modules 1Relative displacement between type unit 7 is λ2=(s+1/ (2m)) * τs, τsFor secondary pole span, k, s are positive integer；Relative displacement between adjacent two out-phase in same module 1 is (1/m) * τsTime, two homophasesRelative displacement between type unit 7 is λ1=k* τs, out-phase in adjacent two modules 1Relative displacement between type unit 7 is λ2=(s+1/m) * τs。
1 secondary pole span τ is differed between said two module 1sOr 1/2 secondary pole span τ of differences。
The number of described module 1 is t, t is the positive integer more than or equal to 2, the position of described t module 1 can arbitrarily exchange, and not necessarily order according to " ABCABC ... " arranges successively, now needs to meet: the relative displacement between adjacent two out-phase in same module 1 is 1/ (2m) * τsTime, two homophasesRelative displacement between type unit 7 is λ1=(k ± 1/2) * τsOr λ1=k τs, out-phase in adjacent two modules 1Relative displacement between type unit 7 is λ2=(s+1/ (2m)) * τsOr λ2=(s-1/m) * τs, τsFor secondary pole span, k, s are positive integer；Relative displacement between adjacent two out-phase in same module 1 is (1/m) * τsTime, two homophasesRelative displacement between type unit 7 is λ1=k τsOr λ1=(k ± 1/2) * τs, out-phase in adjacent two modules 1Relative displacement between type unit 7 is λ2=(s+1/m) * τsOr λ2=(s-1/ (2m)) * τs。
Described homophaseThe concentratred winding of type unit 7 flexible combination by the way of in series or in parallel with each other.Described secondary iron core is made up of permeability magnetic material.Described two adjacent permanent magnets 3 uses alternating parallel to magnetize.The height of described permanent magnet 3 is less than or equal to the height of magnetic teeth.Described motor includes j described modularity magnetic flux switching permanent-magnetism linear motor, and j is positive integer；J individual described modularity magnetic flux switching permanent-magnetism linear motor series and parallel constitutes an overall or the most individually control.
Described modularity magnetic flux switching permanent-magnetism linear motor is monolateral slab construction, bilateral slab construction or cylinder type, and such design makes electric motors function applied widely；In addition, described modularity magnetic flux switching permanent-magnetism linear motor is motor or electromotor, this motor module includes j described modularity magnetic flux switching permanent-magnetism linear motor, j is positive integer, j individual described modularity magnetic flux switching permanent-magnetism linear motor series and parallel constitutes an overall or the most individually control, and j is positive integer.Described motor is in the case of winding direction of winding determines, permanent magnet magnetizing direction can complete contrary with before.Described motor is serially connected together with the winding of phase module.
In order to construction features and the operation logic of the present invention are described, illustrate as a example by a three phase electric machine below.
Embodiment 1
Seeing Fig. 1, the module complementary type magnetic flux switching permanent-magnetism linear motor structure that the present invention provides includes electric motor primary 5 and motor secondary 6, has air gap between the two.Primary 5 and secondary 6 all use salient-pole structure.And permanent magnet 3 and winding 2 are all on primary 5, secondary 6 are only made up of permeability magnetic material, without winding, without permanent magnet.
Now, the relative displacement between adjacent two out-phase in number of phases m=3, same module is 1/6 τsTime, k=4, s=2, λ1=9/2 τs, λ2=13/6 τs, τm=τs。
Described electric motor primary 5 includesType unit 7, N*m altogether, every iType unit 7 forms a module, and N is the coil number in every phase winding, and i is positive integer.And fill with non-magnetic piece 4 between adjacent two modules 1.EachType unit 7 is by 5, permanent magnet of two primary teeth and strides across the armature winding 2 of the two tooth and constitutes, and armature winding 2 is placed in two teeth groove, and in this example, m=3, i.e. motor have A, B, C three-phase as shown in the figure；N=4, has four coils connected in series to form in i.e. every phase winding；I=4, the most each module 1 is by fourType unit forms.
In this example, each phase has four groups identicalType unit 7, each module is by 2Type unit 7 is constituted, and the concentratred winding of first module is A1, B1；The concentratred winding of second module is C1, A2；The concentratred winding of the 3rd module is B2, C2；The concentratred winding of the 4th module is A3, B3；The concentratred winding of the 5th module is C3, A4；The concentratred winding of the 6th module is B4, C4.In fact, it is simply that according to A, B, C three-phase along primary sequentially coiling.Non-magnet material is used to connect, as it is shown in figure 1, the spacing between module should meet τ between each modulem=τs, τmFor the width of non-magnetic piece 4, τsFor secondary pole span.And ensure that the winding direction in each module is consistent.
As it is shown in figure 1, the concentratred winding in A phase is formed by these four coils connected in series of A1, A2, A3, A4, B, C phase is the most such.For convenience, A1, B1, C1 concentratred winding is defined as the first winding by us, and A2, B2, C2 are defined as the second winding, and A3, B3, C3 are defined as the tertiary winding, and A4, B4, C4 are defined as the 4th winding.As it is shown in figure 1, the relative displacement between adjacent two coils is λ in A phase (or B, C phase)1=(k ± 1/2) * τs, and in same winding, the relative displacement between adjacent two out-phase (such as A1 and B1, or B1 and C1) is λ2=(s+1/ (2m)) * τs, τsFor secondary pole span, k, s are positive integer, and m is the number of phases of motor.
The motor of this structure has a characteristic that first, the both ends of first module are winding A1 and B1, the both ends of second module are winding C1 and A2, the both ends of the 3rd module are winding B2 and C2, the both ends of first module are winding A3 and B3, the both ends of second module are winding C3 and A4, the both ends of the 3rd module are winding B4 and C4, this structure has four windings in end in ensure that mutually, alleviate the difference on the magnetic circuit that end effect is caused, thus cause the magnetic linkage in each module and back-emf symmetrical complement.And the magnetic linkage of each phase or back emf waveform 180 degree of electrical angles of difference in each concentratred winding, this complementary characteristic makes the sensing back-emf high order even-order harmonic component amplitude in four windings equal, opposite in phase, cancel out each other when synthesizing an opposite potential, thus ensure that the permanent magnet flux linkage of motor and back-emf have sinusoidal symmetry highly.
Second, two adjacent homophasesRelative displacement between type unit 7 is λ1=(k ± 1/2) τs, k is positive integer, thus ensures that the detent force waveform of each module has the phase contrast of 180 degree of electrical angles, and the detent force of every partial synthesis is weakened severely.
In Fig. 1, specific embodiment can also be become a motor module as a motor module by j such module complementary type magnetic flux switching permanent-magnetism linear motor block combiner, and j is positive integer, reduces detent force the most further, improves power output.Wherein, these j described module complementary type magnetic flux switching permanent-magnetism linear motors can be with an overall or the most individually control in series.
Embodiment 2
As in figure 2 it is shown, work as m=3, the relative displacement between adjacent two out-phase in same module is 1/3 τsTime, k=4, s=2, λ1=4 τs, λ2=11/6 τs, τm=1/2 τs.With the difference in embodiment 1, module complementary type magnetic flux switching permanent-magnetism linear motor in the present embodiment is that described motor is by fourType unit constitutes a module, totally 3 modules.The width of non-magnetic piece 4 between adjacent two modules 1 becomes original half, i.e. τm=1/2 τs, τmFor the width of non-magnetic piece, τsFor secondary pole span, and, now the relative displacement between adjacent two out-phase in a module is (1/m) * τs.Method for winding is also according to the sequentially coiling of " ABCABC ... " three-phase, but the winding direction of second module is the most contrary with the winding direction of other two modules, must is fulfilled for following two condition: two homophases simultaneouslyRelative displacement between type unit is λ1=k* τsOr λ1=(k ± 1/2) * τs；Out-phase in adjacent two modulesRelative displacement between type unit is λ2=(s-1/ (2m)) * τs, k, s are positive integer, and m is the number of phases of motor, and m=3 in this example, i.e. motor are three-phase windings.Thus form mutual symmetry structure, and than its archetype, shorten the length of primary to a certain extent, save material.Other structures and characteristic are the most same as in Example 1.
The magnetic linkage comparison of wave shape figure of the present invention as shown in Figure 3, compare with the magnetic linkage waveform of traditional magnetic flux switching straight line motor, the present invention proposes novel module complementary type magnetic flux switching straight line motor, due to end effect, the peak-to-peak value of the phase magnetic linkage being in end is less than interjacent phase magnetic linkage, thus causes three-phase magnetic linkage waveform asymmetric.And for motor as herein described, magnetic linkage Symmetrical, and the peak-to-peak value of the phase magnetic linkage of end and middle phase magnetic linkage is essentially identical, embodies the construction features of symmetrical complement.Owing to ensure that in every phase winding all by equal end effect, balance the end effect impact on motor, so that the magnetic linkage of motor and back emf waveform are more symmetrical, sinusoidal.
Detent force comparison of wave shape figure as shown in Figure 4, compares with the detent force of traditional magnetic flux switching straight line motor, and after the present invention takes the structure of module complementary type, the peak of detent force-cutting edge of a knife or a sword value is obviously reduced, and motor performance significantly improves.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention.All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (7)
1. one kindType magnetic flux switching permanent-magnetism linear motor, it is characterized in that: include primary (5) and secondary (6), described primary (5) and secondary (6) are salient-pole structure, there is air gap between described primary (5) and secondary (6)；
Described primary (5) includes primary iron core, permanent magnet (3), non-magnetic piece (4), armature winding (2), described primary iron core forms magnetic teeth, and the magnetic teeth of described permanent magnet (3) and its both sides constitutes oneType unit (7), described primary (5) includes described in N*mType unit (7), N is the coil number in every phase winding, and m is the number of phases of motor；Described in every iType unit (7) constitutes a module (1), fills described non-magnetic piece (4) between adjacent two described modules (1)；Described armature winding (2) is installed in teeth groove, and the coil of an armature winding (2) strides across one piece of permanent magnet (3) and two pieces of primary iron cores form concentratred winding structure；The relative displacement between adjacent two out-phase in same module (1) is 1/ (2m) * τsOr (1/m) * τs；
Relative displacement between adjacent two out-phase in same module (1) is 1/ (2m) * τsTime, two homophasesRelative displacement between type unit (7) is λ1=(k ± 1/2) * τs, the upper out-phase of adjacent two modules (1)Relative displacement between type unit (7) is λ2=(s+1/ (2m)) * τs, τsFor secondary pole span, k, s are positive integer；
Relative displacement between adjacent two out-phase in same module (1) is (1/m) * τsTime, two homophasesRelative displacement between type unit (7) is λ1=k* τs, the upper out-phase of adjacent two modules (1)Relative displacement between type unit (7) is λ2=(s+1/m) * τs。
The most according to claim 1Type magnetic flux switching permanent-magnetism linear motor, it is characterised in that: differ 1 secondary pole span τ between two modules (1)sOr 1/2 secondary pole span τ of differences。
The most according to claim 1Type magnetic flux switching permanent-magnetism linear motor, it is characterised in that: homophaseConcentratred winding flexible combination by the way of in series or in parallel with each other of type unit (7).
The most according to claim 1Type magnetic flux switching permanent-magnetism linear motor, it is characterised in that: secondary iron core is made up of permeability magnetic material.
The most according to claim 1Type magnetic flux switching permanent-magnetism linear motor, it is characterised in that: two adjacent permanent magnets (3) uses alternating parallel to magnetize.
The most according to claim 1 or 5Type magnetic flux switching permanent-magnetism linear motor, it is characterised in that: the height of described permanent magnet (3) is less than or equal to the height of magnetic teeth.
The most according to claim 1The motor module that type magnetic flux switching permanent-magnetism linear motor is constituted, it is characterised in that: describedType magnetic flux switching permanent-magnetism linear motor is as a modularity magnetic flux switching permanent-magnetism linear motor；Described motor module includes j described modularity magnetic flux switching permanent-magnetism linear motor, and j is positive integer；A j described modularity magnetic flux switching permanent-magnetism linear motor overall or the most individually control in series.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656740U (en) * | 2010-05-12 | 2010-11-24 | 东南大学 | Complementary type magnetic flux switching permanent magnet linear motor and motor module comprising same |
| CN103051148A (en) * | 2012-12-13 | 2013-04-17 | 东南大学 | Modular primary permanent magnetic linear motor and motor module consisting of same |
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