CN103595217B - Secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor - Google Patents
Secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor Download PDFInfo
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 5
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- 125000006850 spacer group Chemical group 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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Abstract
A kind of secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor, structure is shown in accompanying drawing.This motor includes bilateral primary and secondary, has air gap between primary and secondary.Monolateral primary includes m block permanent magnet and the U-shaped magnetic teeth of m+1 block, or 2m block permanent magnet and 1 piece of U-shaped magnetic teeth of 2m, and m is the number of phases of motor.Adjacent two U-shaped tooth distances between center line are primary pole span τp.Permanent magnet is clipped between two U-shaped magnetic teeth, and the alternating parallel of adjacent permanent magnet magnetizes, and concentratred winding is arranged in the groove of U-shaped magnetic teeth, and the relative displacement of adjacent phase winding is λ1=(j ± 1/m) τsOr λ1=[j ± (0.5 1/m)] τs, m, j are positive integer.Bilateral primary is identical with secondary relative position, and the permanent magnet magnetizing direction of its correspondence is contrary.Secondary is made up of magnetic inductive block or magnetic inductive block and cross structure, and adjacent two magnetic inductive block distances between center line are secondary pole span τs.The secondary magnetic inductive block of this motor forms, with two-sided permanent magnet body, this road of connecting, and saves secondary yoke portion, reduces cost and the weight of secondary, improves output power of motor and carrying load ability.
Description
Technical field
The present invention relates to a kind of secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor, belong to technical field of motor manufacture.
Background technology
Along with industrial expansion, linear electric motors are widely used.Compared with traditional electric rotating machine type of drive, use straight
Line motor drives and eliminates mechanical gear rotary motion being converted to linear motion, can reduce cost, less noise, reduce
System bulk, lowers maintenance cost.Close in such as the distance driving field such as track traffic, high-rise building elevator, factory's transport, adopt
The shortcomings such as driving structure is complicated, cost is high, dynamic response is slow can be brought by electric rotating machine type of drive.Therefore, straight-line electric is used
Machine replaces this technological means of electric rotating machine, can overcome electric rotating machine disadvantages mentioned above in above-mentioned application scenario, improve whole
The efficiency of system.
China is rare earth permanent magnet big country, and along with power electronics and the development of magnetic material, permanent magnetic brushless is developed rapidly.
This type of motor has the advantage such as high efficiency, high power density.Its corresponding linear structure is also widely studied.Traditional permanent magnetism is straight
Line locking motor has the two-fold advantage of magneto and linear electric motors concurrently.Compared with line inductance electromotor, permanent magnet linear synchronous motor
Pushing force density high, volume is little, lightweight, and has dynamic brake function.But, due to the permanent magnetism of traditional magneto
Body and armature winding are separately mounted to primary and secondary, and the cost of permanent magnet and armature is the highest, such as track traffic, high level
The distance such as building elevator, factory's transport cause the manufacturing cost of system and maintenance cost to be significantly increased undoubtedly.
Magneticflux-switching type primary permanent magnet motor secondary simple in construction, is only made up of magnetic conductive iron, in above-mentioned distance drives not only
Having permanent-magnetism linear motor power density high, efficiency is high, power factor advantages of higher, and has line inductance electromotor and switch
Magnetic resistance structure of the linear motion actuator is simple, low cost, it is easy to the advantages such as maintenance.But traditional monolateral or bilateral magnetic flux switching straight line motor
Proportion shared by secondary yoke portion iron core is relatively big, brings the waste of material and cost to improve.
For improving the power density of flux switch motor further and reducing secondary cost, the present invention proposes a kind of secondary without yoke portion
Bilateral magnetic flux switching permanent-magnetism linear motor.The present invention improves the output of motor, reduces cost and the weight of secondary, both
Can be that distance drives occasion to provide a kind of power density high, the solution of low cost, can be again using secondary as moving component
Type of drive provide a kind of power density high, the drive scheme that load capacity is strong.
Summary of the invention
It is an object of the invention to provide one and can reduce manufacturing cost, improve power of motor density and carrying load ability, reduce dimension
The secondary protecting cost switches permanent-magnetism linear motor without yoke portion bilateral magnetic flux.
To achieve these goals, the present invention realizes by the following technical solutions:
The secondary of the present invention includes bilateral primary and secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor, has gas between the two
Gap.Secondary being made up of magnetic inductive block, the distance between adjacent magnetic inductive block be secondary pole span τ s, secondary adjacent magnetic inductive block be spaced or
Employing cross structure is connected；Monolateral primary includes m block permanent magnet and the U-shaped magnetic teeth of m+1 block, or 2m block permanent magnet and 2m-1
The U-shaped magnetic teeth of block, m is the number of phases of motor；Every piece of permanent magnet is clipped between two U-shaped magnetic teeth, filling of adjacent two permanent magnets
Magnetic direction is contrary, and concentratred winding is arranged in the groove of U-shaped magnetic teeth and entangles permanent magnet；The relative displacement of adjacent phase winding is
λ 1=(j ± 1/m) τ s or λ 1=[j ± (0.5-1/m)] τ s, m, j be positive integer, and adjacent two U-shaped tooth distances between center line are primary pole span
τp；Bilateral primary is identical with secondary relative position, and the permanent magnet magnetizing direction of its correspondence is contrary, the armature winding of its correspondence
Direction of winding is identical with the sense of current.
When above-mentioned monolateral primary includes m block permanent magnet and the U-shaped magnetic teeth of m+1 block, each permanent magnet and the U-shaped of both sides are led
Magnetic tooth all overlaps one and concentrates armature winding, arranges two phase windings in the groove of each U-shaped magnetic teeth；When monolateral primary includes 2m
When block permanent magnet and the U-shaped magnetic teeth of 2m-1 block, a concentratred winding by the U-shaped magnetic teeth spacer sleeve on permanent magnet and both sides, often
The groove of individual U-shaped magnetic teeth only arranges a phase winding；Bilateral primary belongs to the concentratred winding composition in series or in parallel with each other of homophase
One phase.
Above-mentioned secondary is made up of magnetic inductive block or is made up of magnetic inductive block and cross structure, and secondary available non-magnet material fills fastening (such as pressure
Cast aluminium etc.), the secondary magnetic inductive block that is mainly characterized by of the present invention is that bilateral primary permanent magnet body composition series circuit provides passage, thus
Constitute a kind of novel without secondary yoke portion bilateral series circuit magnetic flux switching straight line motor.Due in secondary both without permanent magnet also without around
Group, is only made up of the magnetic inductive block that price is relatively low so that the present invention is especially suitable for as isometric in track traffic, high-rise building elevator
Stator application scenario, can be substantially reduced the cost of system.Simultaneously because mover is only made up of magnetic inductive block, without yoke between magnetic inductive block
Portion, it is lightweight, can improve power density and the carrying load ability of system at short distance ejection system.
In above-mentioned monolateral primary, adjacent two permanent magnet alternating parallel magnetize, and bilateral two primary and secondary relative positions are identical, and its
Corresponding permanent magnet magnetizing direction is contrary.Therefore, bilateral primary corresponding permanent magnet by primary U-shaped magnetic teeth, air gap, secondary
Level magnetic inductive block composition series circuit, height and the magnetizing direction thickness of permanent magnet can adjust as required.
The above-mentioned secondary primary and secondary one without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor is fixed component, and another is fortune
Dynamic component, its structure is bilateral slab construction or cylinder type, can be motor or electromotor.
Above-mentioned secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor module, including x described portion without yoke bilateral magnetic flux switch type
Permanent-magnetism linear motor, x is positive integer, x secondary without yoke portion bilateral magnetic flux switch a permanent-magnetism linear motor entirety in series or
The most individually control.Thus add system survivability.
The permanent magnet of motor of the present invention and armature winding are both placed in primary, and secondary structure is simple, without winding, brushless, nothing
Permanent magnet, only magnetic inductive block, can be spaced apart between magnetic inductive block, it would however also be possible to employ cross structure is connected.Permanent magnet is placed in primary,
Being prone to heat radiation, reliability is high.Compared with traditional magnetic flux switching straight line motor, secondary of the present invention is only made up of magnetic inductive block, adjacent
Need not conductive magnetic yoke portion between magnetic inductive block, its structure is simpler, is not only substantially reduced cost and the weight of secondary, and has more
High power density.For from magnetic structure, the present invention is a kind of novel straight without the bilateral series circuit magnetic flux switching of secondary yoke portion
Line motor.Primary secondary all can use modularized design, and modular construction is conducive to producing and installing, and is particularly well-suited to long stator
Application scenario, can be substantially reduced system cost.
When secondary is as short mover, due to its simple in construction, without permanent magnet, brushless, lightweight, launch in short distance and drive
Dynamic system is possible not only to improve the power density of ejection system, and the carrying load ability of ejection system and system can be improved
Reliability.
Therefore, the present invention is with a wide range of applications.
Accompanying drawing explanation
Fig. 1 embodiment of the present invention 1 electric machine structure schematic diagram
Fig. 2 embodiment 1 motor A phase winding magnetic linkage minimizes position local module magnetic line of force scattergram
Fig. 3 embodiment 1 motor A phase winding magnetic linkage reaches maximum position local module magnetic line of force scattergram
Fig. 4 embodiment of the present invention 2 electric machine structure schematic diagram；
Fig. 5 embodiment of the present invention 3 electric machine structure schematic diagram；
Fig. 6 embodiment of the present invention 4 electric machine structure schematic diagram；
Detailed description of the invention:
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with specifically
Embodiment, is expanded on further the present invention.
Embodiment 1:
As it is shown in figure 1, the present invention include bilateral primary 11, secondary 10 and concentratred winding 113, described primary 11 and secondary 10
Between there is air gap.Monolateral primary 11 include m block the permanent magnet 112 and m+1 U-shaped magnetic teeth of block 111, and m=3 is motor
The number of phases；Every piece of permanent magnet 112 is clipped between two U-shaped magnetic teeth 111, and concentratred winding 113 is arranged at the groove of U-shaped magnetic teeth
In and entangle permanent magnet 112, the relative displacement of adjacent phase concentratred winding 113 is λ 1=(j ± 1/m) τ s or λ 1=[j ± (0.5-1/m)] τ s,
M, j are positive integer.λ 1=in the present embodiment (j+ (0.5-1/m)] τ s, m=3, j=1；τ s is secondary 10 pole spans, primary 11
Pole span is τ p；
In the present embodiment, using cross structure 101 to be connected in secondary 10 between adjacent magnetic inductive block 100, in the present embodiment, primary is short
Mover, secondary is long stator, and Fig. 1 only provides part secondary structure.
In the present embodiment, monolateral primary has three-phase concentratred winding (i.e. A1, B1, C1 or A11, B11, C11 in Fig. 1), belongs to
In homophase windings in series or compose in parallel a phase winding, the groove of middle U-shaped tooth places two phase windings.
In the present embodiment, in monolateral primary 11, adjacent two permanent magnet 112 alternating parallel magnetize, and bilateral two primary 11 and secondary 10
Relative position identical, and the permanent magnet magnetizing direction of its correspondence is contrary, permanent magnet magnetizing direction as shown in arrow in accompanying drawing, its
Corresponding winding winding mode is identical, and the current phase in winding is identical.As shown in Figure 1, bilateral primary belongs to homophase two
Permanent magnet passes through U-shaped tooth 111, and air gap, secondary 10 magnetic inductive blocks 100 form series circuit (i.e. A1 and A11 winding institute in figure
Two permanent magnets by U-shaped tooth 111, air gap, secondary 10 magnetic inductive blocks 100 form series circuit), and meet magnetic flux and cut
Change jobs principle.
In order to the operation principle of motor of the present invention is described, Fig. 2 and Fig. 3 gives one module of the present invention magnetic when diverse location
The line of force is distributed.When primary 11 movers move to position shown in Fig. 2 with certain speed, bilateral primary two permanent magnets are led by secondary
Magnetic piece provide group of paths become series circuit, its main flux path as shown by arrows in FIG., the now magnetic linkage of linkage in A phase winding
Being approximately zero, the back-emf amplitude in A phase winding reaches positive maximum.When primary 11 movers continue with certain speed motion τ s/4
Distance, i.e. shown in Fig. 3 during position, the group of paths that bilateral primary two permanent magnets are provided by secondary magnetic inductive block becomes series circuit, its
As shown by arrows in FIG., now in A phase winding, the magnetic linkage of linkage is approximately positive maximum, in A phase winding in main flux path
Back-emf amplitude reduce to zero；When primary 11 movers continue with certain speed motion τ s/4 distance, the magnetic linkage of linkage in A phase winding
Approximation is reduced to zero, and the most now the back-emf amplitude in A phase winding is negative maximum；When primary 11 movers continue with necessarily
Speed motion τ s/4 distance, in A phase winding, the magnetic linkage approximation of linkage reduces to the maximum born, the most now anti-electricity in A phase winding
Gesture amplitude reaches again positive maximum, and now primary mover is done exercises an electrical cycle 360 ° (i.e. moving τ s distance), its
The change waveform of magnetic linkage and back-emf is approximately sinusoidal wave.
The structure of the present invention has following features: first, and the bilateral Normal Force of primary 11 suffered by secondary 10 is cancelled out each other, from
And reduce the frictional dissipation of system.Second, two permanent magnets of bilateral homophase 113 are by primary U-shaped tooth 111, air gap, secondary
10 magnetic inductive blocks 100 form series circuit, save secondary 11 yoke portion materials, thus greatly reduce cost and the weight of secondary 10,
Improve power density and the carrying load ability of this electric system.
Embodiment 2:
Fig. 4 is the motor module being made up of two embodiment 1 motors.In the present embodiment in monolateral primary every phase winding by two
Concentrate and form around A1 and A2 serial or parallel connection.The position λ 2=of the concentration two permanent magnet relative secondary around A1 and A2 place
(0.5+3) τ s, electromagnetic property the most therebetween has complementary characteristic, when concentration is composed in series A phase winding around A1 and A2,
A phase winding back-emf amplitude is to concentrate the twice around A1 and A2 fundamental voltage amplitude, and when concentrating the high order in A1 and A2
Harmonic wave is cancelled out each other, and therefore can improve the sine of A phase winding back-emf.Meanwhile, the detent force of the present embodiment motor also by
Weaken.Bilateral primary 11 windings belonging to homophase can form a phase winding with serial or parallel connection.
Embodiment 3:
Fig. 5 is the motor module being made up of two embodiment 2 motors.In the present embodiment in monolateral primary 11 every phase winding by two
Group concentratred winding, i.e. A1+A2 and A3+A4 serial or parallel connection forms.Concentrate around A1 with A3 identical with secondary relative position,
Concentrate around A2 with A4 the most identical with secondary relative position.Concentrate and concentrate around A2 or A4 phase with concentratred winding around A1 or A3
To secondary position λ 2=(0.5+3) τ s, therefore there is complementary characteristic between two groups of concentratred winding 113.Therefore, in the present invention two
Individual embodiment 2 motor can be composed in series a new motor module, it is possible to parallel Operation Control.The present embodiment and embodiment 1
With 2 difference be, the motor bilateral primary 11 described in the present embodiment as fixed component, short secondary 10 as motion
Parts.The present invention, in electromagnetic launch and short distance transportation system, can improve carrying load ability and the power density of drive system.
Embodiment 4:
As shown in Figure 6, the present invention is with the difference of embodiment 1, and monolateral primary 11 include 2m block permanent magnet 112 He
The U-shaped magnetic teeth of 2m-1 block 111, m=3 is the number of phases of motor.The present invention is concentratred winding with the difference of embodiment 2
Number and connected mode.In the present embodiment, monolateral primary 11 modules only have 1 concentratred winding 113, permanent magnet 112 mutually
One with U-shaped magnetic teeth 111 spacer sleeve on both sides and concentrate armature winding 113, the groove of each U-shaped magnetic teeth only arranges one
Phase winding.The structure of the present invention has a following features: in primary module, mutual inductance is not little between homophase concentratred winding, therefore this motor
Fault-tolerant ability is strong.By multiple the present embodiment motors, multiple new motor can also be obtained according to the method for embodiment 2 and embodiment 3
Module, the present invention no longer describes in detail.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The technical staff of the industry should
Solving, the present invention is not restricted to the described embodiments, the principle that the present invention is simply described described in above-described embodiment and description,
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
Enter in scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. time level switches permanent-magnetism linear motor without yoke portion bilateral magnetic flux, including bilateral two primary (11), secondary (10) and concentratred winding (113),
Between described primary (11) and secondary (10), there is air gap, it is characterised in that
Described primary (11) includes m block permanent magnet (112) and the U-shaped magnetic teeth of m+1 block (111), or 2m-1 block permanent magnet (112) and 2m
The U-shaped magnetic teeth of block (111), m is the number of phases of motor；Every piece of permanent magnet (112) is clipped between two U-shaped magnetic teeth (111), collection
Middle winding (113) is arranged in the groove of U-shaped magnetic teeth and entangles permanent magnet (112), and the relative displacement of adjacent phase concentratred winding (113) is
λ 1=(j ± 1/m) τ s or λ 1=[j ± (0.5-1/m)] τ s, j are positive integer；τ s is between secondary (10) adjacent two magnetic inductive blocks (101)
Distance, adjacent two U-shaped magnetic teeth (111) distances between center line are primary (11) pole span τ p；
Described secondary (10) is made up of magnetic inductive block (100), and the distance between adjacent magnetic inductive block (100) is secondary pole span τ s, secondary adjacent magnetic conduction
Block (100) uses cross structure (101) to be connected；Secondary magnetic inductive block (100) is that bilateral two primary permanent magnet body composition series circuits provide logical
Road；
When described primary (11) includes m block permanent magnet (112) and m+1 block U-shaped magnetic teeth (111), each permanent magnet and the U on both sides
Type magnetic teeth all overlaps a concentratred winding (113), arranges biphase concentratred winding in the groove of each U-shaped magnetic teeth；When primary includes
When 2m-1 block permanent magnet and the U-shaped magnetic teeth of 2m block, a concentratred winding by the U-shaped magnetic teeth spacer sleeve on permanent magnet and both sides,
The groove of each U-shaped magnetic teeth only arranges a phase concentratred winding；Bilateral two primary (11) belong to concentratred winding (113) string of homophase
Join or compose in parallel a phase；
In primary (11), adjacent two permanent magnets (112) alternating parallel magnetizes, and bilateral two primary (11) are identical with the relative position of secondary (10), and
The permanent magnet magnetizing direction of its correspondence is contrary, and height and the width of permanent magnet (112) adjust as required, the same phase winding of its correspondence
Winding mode the most identical with current phase；Constitute bilateral series circuit magnetic flux switching straight line motor.
The most according to claim 1 secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor, it is characterised in that described secondary (10)
Being made up of magnetic inductive block (100) and cross structure (101), secondary (10) fill fastening with non-magnet material, and magnetic inductive block leaves installation on (100)
Hole.
The most according to claim 2 secondary switch permanent-magnetism linear motor without yoke portion bilateral magnetic flux, it is characterised in that described primary with
Secondary one is fixed component, and another is moving component, and its structure is bilateral slab construction or cylinder type, can be electronic
Machine or electromotor.
4. the motor module being made up of without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor the secondary described in any one of claims 1 to 3,
It is characterized in that, described secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor including x, x is positive integer；X described secondary
Level is without the overall or the most individually control in series of yoke portion bilateral magnetic flux switching permanent-magnetism linear motor.
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| CN201310566701.7A CN103595217B (en) | 2013-11-15 | 2013-11-15 | Secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor |
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| CN201310566701.7A CN103595217B (en) | 2013-11-15 | 2013-11-15 | Secondary without yoke portion bilateral magnetic flux switching permanent-magnetism linear motor |
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| CN103595217B true CN103595217B (en) | 2016-10-19 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319976B (en) * | 2014-11-18 | 2017-01-18 | 南京航空航天大学 | Internal armature field enhancement-type permanent magnet flux-switching linear motor |
| CN104600951B (en) * | 2015-01-30 | 2018-02-09 | 南京航空航天大学 | Primary electrical excitation series circuit bilateral linear motor |
| CN106301139B (en) * | 2015-05-19 | 2019-02-15 | 中国石油天然气股份有限公司 | Permanent magnet linear motor and control method, device and system thereof |
| US10686357B2 (en) | 2017-05-12 | 2020-06-16 | Otis Elevator Company | Door operator with switched flux linear motor |
| CN106972730A (en) * | 2017-06-02 | 2017-07-21 | 南京航空航天大学金城学院 | One kind distribution field excitation linear permanent-magnet type flux switching motor |
| CN110030916A (en) * | 2019-04-18 | 2019-07-19 | 安徽拓信电气科技有限公司 | A kind of primary permanent magnet formula linear position sensors |
| CN110690809B (en) * | 2019-08-19 | 2021-07-27 | 中国矿业大学 | Double-side primary permanent magnet type transverse flux linear motor |
| CN112865477A (en) * | 2019-11-12 | 2021-05-28 | 高明铁企业股份有限公司 | Thin bipolar phase alignment linear stepping motor |
| CN113162365B (en) * | 2021-05-11 | 2023-10-13 | 沈阳工业大学 | Double-sided magnetic flux switching type magnetic suspension permanent magnet linear synchronous motor and control method thereof |
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| CN101951090A (en) * | 2010-09-07 | 2011-01-19 | 哈尔滨工业大学 | Radial magnetic field modulating brushless double-rotor motor |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002281731A (en) * | 2001-03-19 | 2002-09-27 | Canon Inc | Linear pulse motor, stage, and aligner |
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|---|---|---|---|---|
| CN101951090A (en) * | 2010-09-07 | 2011-01-19 | 哈尔滨工业大学 | Radial magnetic field modulating brushless double-rotor motor |
| 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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| Title |
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| Novel linear flux-switching permanent magnet machines;Z.Q.Zhu etc;《Electrical Machines and Systems, 2008. ICEMS 2008. International Conference》;20081031;2948-2953 * |
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