CN109617359A - Reduce line inductance electromotor laterally and longitudinally end effect method - Google Patents
Reduce line inductance electromotor laterally and longitudinally end effect method Download PDFInfo
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- CN109617359A CN109617359A CN201811292763.2A CN201811292763A CN109617359A CN 109617359 A CN109617359 A CN 109617359A CN 201811292763 A CN201811292763 A CN 201811292763A CN 109617359 A CN109617359 A CN 109617359A
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- primary
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- longitudinal end
- line inductance
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- 230000000694 effects Effects 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 59
- 230000005291 magnetic effect Effects 0.000 claims abstract description 39
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 18
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 12
- 230000005294 ferromagnetic effect Effects 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 7
- 238000004804 winding Methods 0.000 abstract description 6
- 206010037660 Pyrexia Diseases 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/025—Asynchronous motors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses reduce line inductance electromotor laterally and longitudinally end effect method, the specific method is as follows: method one: reducing longitudinal end effect by changing primary shape, the shape of primary longitudinal end stator tooth uses right angled triangle, wherein outwardly, two right-angle sides are longest over there towards secondary for hypotenuse.The present invention solves the problems, such as the longitudinal end effect of line inductance electromotor and transverse edge effect, the reduction line inductance electromotor laterally and longitudinally end effect method, primary winding current asymmetrical three-phase can effectively be avoided, there is end face magnetic flux cut-offfing place, there is the appearance of the problems such as half filling slot in electric transient phenomenon and winding end edge of the line inductance electromotor in the magnetic field that the magnetic field intercepts secondary that motion process primary generates generates, greatly reduce the fluctuation of thrust output, improve line inductance electromotor delivery efficiency, reduce the heat of line inductance electromotor fever, extend the service life of line inductance electromotor.
Description
Technical field
The present invention relates to techniques of linear motor fields, specially reduce line inductance electromotor laterally and longitudinally end effect side
Method.
Background technique
Traditional driving device mostly uses the additional transmission device of rotating electric machine (such as gear, roller bearing, chain, transmission belt
Deng), it has been unsatisfactory for nowadays more and more high-precisions, efficient process requirements.Traditional bearing rubs during the work time
Heat runs out bearing and needs to regularly replace, and transmission device volume is not easily shifted greatly, and linear motor can be improved work effect
Rate reduces electricity loss, without complicated transmission device, it is clear that traditional rotating electric machine and bearing structure are substituted using linear motor
At dynamical system it is more economical, conveniently and be more able to satisfy process requirements, be straight-line electric with the fundamental difference of rotating electric machine
Machine cut-offs (discontinuous) due to primary iron core, and there are one to enter end and outlet, and rotating electric machine is closure (continuous).
This fundamental difference, cause line inductance electromotor and generate some endemisms: primary winding current three-phase is not right
Claim, in the electric wink cut-off place and the magnetic field for the magnetic field intercepts secondary generation that end face magnetic flux, motor are generated in motion process primary occur
There is the problems such as half filling slot in state phenomenon, winding end edge, and these phenomenons exactly generate longitudinal end effect and lateral ends
The basic reason of effect, wherein longitudinal end effect and transverse edge effect will affect thrust output fluctuation and motor it is defeated
It is serious also to make that the motor feels hot for efficiency reduction out, therefore, overcome longitudinal end effect and transverse edge effect is that people are permanent
Since the major issue to be inquired into.
Summary of the invention
The purpose of the present invention is to provide reducing line inductance electromotor laterally and longitudinally end effect method, from primary, secondary
Grade using new material, structure, changes many aspects such as size, comprehensively considers Multiple factors, proposes to inhibit line inductance electromotor
The serial of methods such as horizontal and vertical end effect, solve the longitudinal end effect and lateral ends of line inductance electromotor
The problem of effect.
To achieve the above object, the invention provides the following technical scheme: reducing line inductance electromotor laterally and longitudinally end
Effect method, the specific method is as follows: method one: reducing longitudinal end effect, primary longitudinal end by changing primary shape
The shape of stator tooth uses right angled triangle, and wherein outwardly, the longest direction over there of two right-angle sides is secondary for hypotenuse,
Secondary long side is towards Stator Slots.
Method two: reduce longitudinal end effect by changing primary size, the primary longitudinal end stator tooth facewidth adds
Long 2-3 times to original size.
Method three: reducing longitudinal end effect by changing primary size, and primary longitudinal end tooth tooth is long to lengthen gas
The 1/4-1/2 of gap length.
Method four: reducing longitudinal end effect by changing primary material, uses in primary longitudinal end stator tooth
Or in the better material of tooth outer patch magnetic property, silicon steel thin belt or ferromagnetic nanocrystalline.
Method five: reducing transverse edge effect by changing secondary shape, changes secondary and crosses out primary part
Shape be wedge shape.
Method six: reducing longitudinal end effect by changing secondary shape, crosses out primary part in secondary and digs
There is a deep trouth, flute profile can be rectangle, arc-shaped, triangle and trapezoidal.
Method seven: reducing longitudinal end effect by changing secondary shape, laterally stretches along secondary longitudinal direction secondary
Run through inside primary left-right parts out.
Method eight: reduce longitudinal end effect by changing primary material, the lateral ends of stator stick magnetic conductivity
It can better silicon steel thin belt and ferromagnetic nanocrystalline equal materials.
Method nine: reduce longitudinal end effect by changing primary shape, the horizontal section of stator teeth is designed to
One arch bridge-type structure.
Method ten: reduce longitudinal end effect by changing secondary material, in secondary aluminium sheet and primary transverse end
Portion's intersection plugs magnetic property preferably ferromagnetic nanocrystalline or silicon steel thin belt.
Method 11: reduce transverse direction and longitudinal end effect by changing secondary shape, by secondary beyond primary
Lateral part design is overrided to form by 1-2 millimeters of aluminium flakes.
Preferably, ferromagnetic nanocrystalline and silicon steel thin belt or other thin magnetic films are one kind as needed by several thin slices
The material being overrided to form.
Preferably, it is designed to be overrided to form by 1-2 millimeters of aluminium flakes beyond primary lateral part by secondary.
Preferably, in the method five, wedge-shaped most short side is secondary height, and apex angle is about 10 ° -20 °.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention solves the problems, such as the longitudinal end effect of line inductance electromotor and transverse edge effect, the reduction
Line inductance electromotor laterally and longitudinally end effect method, can effectively avoid primary winding current asymmetrical three-phase, cut-off
There is the electric transient in the magnetic field that the magnetic field intercepts secondary that end face magnetic flux, line inductance electromotor are generated in motion process primary generates in place
There is the appearance of the problems such as half filling slot in phenomenon and winding end edge, greatly reduce the fluctuation of thrust output, improve linear induction
Motor delivery efficiency reduces the heat of line inductance electromotor fever, extends the service life of line inductance electromotor.
Detailed description of the invention
Fig. 1 is 1,5,7,9 linear motor part-structure details in summary method, and attached drawing 1a is left view, figure
1b is front view, Fig. 1 c is top view, Fig. 1 d is three-dimensional effect diagram；
Fig. 2 is 2,3,8,11 linear motor part-structure details in summary method, and attached drawing 2a is left view, figure
2b is front view, Fig. 2 c is top view, Fig. 2 d is three-dimensional effect diagram；
Fig. 3 is 4,6,10 linear motor part-structure details in summary method, and attached drawing 3a is left view, Fig. 3 b
For front view, Fig. 3 c be top view, Fig. 3 d is three-dimensional effect diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3a, 3b, 3c and 3d are please referred to, the present invention provides a kind of technical solution:
Line inductance electromotor laterally and longitudinally end effect method is reduced, there are magnetic fluxs by reducing vertical and horizontal end peripheral region
And there are vortex brought by magnetic flux for end peripheral region, to reduce vertical and horizontal end effect, and reduce or inhibit end
It is vortexed brought by magnetic flux existing for portion's peripheral region and the magnetic flux as existing for the peripheral region of end, by changing straight line sense
Answer motor primary and secondary shape, there are also sizes for material.
In the present invention: reducing longitudinal end effect, the shape of primary longitudinal end stator tooth by changing primary shape
Shape uses right angled triangle, and wherein outwardly, two right-angle sides are longest over there towards secondary, secondary long side direction for hypotenuse
Stator Slots, the horizontal section of stator teeth are designed to an arch bridge-type structure, and this design can increase end tooth and air gap
Contact area, to reduce the magnetic resistance of end tooth.Therefore the magnetic flux of longitudinal end periphery is reduced, more magnetic fluxs are from end tooth stream
To air gap.
In the present invention: reducing longitudinal end effect, primary device longitudinal end stator tooth by changing primary size
Its facewidth is lengthened to 2-3 times of original size, and the tooth of primary device longitudinal end tooth is long, should be longer than the long increase air gap of adjustment nipper
The 1/8-1/4 of size is spent, this design can increase the length of end tooth, reduce gas length, to reduce end air gap magnetic
Resistance.Therefore the magnetic flux of longitudinal end periphery is reduced, more magnetic fluxs flow to air gap from end tooth.
In the present invention: reducing longitudinal end effect by changing primary material, make in primary longitudinal end stator tooth
With or tooth outer patch magnetic material, magnetic material includes silicon steel thin belt or ferromagnetic nanocrystalline, the lateral ends position patch of stator
The upper better silicon steel thin belt of magnetic property and ferromagnetic nanocrystalline equal materials, this design opposite can increase secondary and cross out
The magnetic resistance of primary part, to reduce the magnetic flux of lateral ends periphery, this design can increase primary stator tooth lateral ends
Length, reduce lateral ends gas length, to reduce lateral ends air-gap reluctance.Stator tooth transverse end is flowed to increase
And the magnetic flux of lateral ends air gap, reduce lateral ends periphery magnetic flux.
In the present invention: reducing transverse edge effect by changing secondary shape, change secondary and cross out primary section
The shape divided is sphenoid, and sphenoid most short side is secondary height, and apex angle is about 10-20 °, and secondary crosses out primary part and digs
There is a deep trouth, flute profile can be rectangle, arc-shaped, triangle and trapezoidal, along collateral motion direction, cross out primary in secondary
Left-right position part bore penetrability through-hole, be designed to be laminated by 1-2 millimeters of aluminium flakes beyond primary lateral part by secondary and
At this design is vortexed caused by the magnetic flux that can reduce lateral ends periphery, and this design can increase primary stator tooth
Lateral ends magnetic conductivity is reduced outside lateral ends to increase the magnetic flux for flowing to stator tooth transverse end and lateral ends air gap
Enclose magnetic flux.
In the present invention: reducing longitudinal end effect by changing secondary material, in secondary aluminium sheet and primary transverse direction
At end interface, the magnetic materials such as ferromagnetic nanocrystalline or silicon steel thin belt are plugged, this design can reduce lateral ends portion magnetic flux
Generated vortex.
In the present invention: ferromagnetic nanocrystalline and silicon steel thin belt or other thin magnetic films are one kind as needed by several thin
The material that piece is overrided to form.
In the present invention: above several (the being not limited only to one kind) method is taken in practice, it can be according to practical need
Several are selected from the method being listed above to combine.
In summary: the reduction line inductance electromotor laterally and longitudinally end effect method solves line inductance electromotor
Longitudinal end effect and transverse edge effect the problem of.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. reducing line inductance electromotor laterally and longitudinally end effect method, it is characterised in that: the specific method is as follows: method one:
Reducing longitudinal end effect by changing primary shape, the shape of primary longitudinal end stator tooth uses right angled triangle,
Outwardly, two right-angle sides are longest over there towards secondary for middle hypotenuse, and secondary long side is towards Stator Slots；
Method two: reducing longitudinal end effect by changing primary size, the primary longitudinal end stator tooth facewidth lengthen to
2-3 times of original size；
Method three: reducing longitudinal end effect by changing primary size, and the long lengthening air gap of primary longitudinal end tooth tooth is long
The 1/4-1/2 of degree；
Method four: reducing longitudinal end effect by changing primary material, primary longitudinal end stator tooth using or
The better material of tooth outer patch magnetic property, silicon steel thin belt or ferromagnetic nanocrystalline；
Method five: reducing transverse edge effect by changing secondary shape, changes the shape that secondary crosses out primary part
Shape is wedge shape；
Method six: reducing longitudinal end effect by changing secondary shape, and crossing out primary part digging in secondary has depth
Slot, flute profile can be rectangle, arc-shaped, triangle and trapezoidal；
Method seven: reducing longitudinal end effect by changing secondary shape, crosses out just along secondary longitudinal direction in secondary
Run through inside the left-right parts of grade；
Method eight: reduce longitudinal end effect by changing primary material, the lateral ends of stator stick magnetic property more
Silicon steel thin belt well and ferromagnetic nanocrystalline equal materials；
Method nine: reduce longitudinal end effect by changing primary shape, the horizontal section of stator teeth is designed to one
Encircle bridge-type structure；
Method ten: reducing longitudinal end effect by changing secondary material, hands in secondary aluminium sheet and primary lateral ends
Magnetic property preferably ferromagnetic nanocrystalline or silicon steel thin belt is plugged at boundary；
Method 11: reducing transverse direction and longitudinal end effect by changing secondary shape, laterally beyond primary by secondary
Part design be overrided to form by 1-2 millimeters of aluminium flakes.
2. reduction line inductance electromotor according to claim 1 laterally and longitudinally end effect method, it is characterised in that: iron
Magnetic is nanocrystalline and silicon steel thin belt or other thin magnetic films, is a kind of material being overrided to form as needed by several thin slices.
3. reduction line inductance electromotor according to claim 1 laterally and longitudinally end effect method, it is characterised in that: will
Secondary is designed to be overrided to form by 1-2 millimeters of aluminium flakes beyond primary lateral part.
4. reduction line inductance electromotor according to claim 1 laterally and longitudinally end effect method, it is characterised in that: institute
It states in method five, wedge-shaped most short side is secondary height, and apex angle is about 10 ° -20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292763.2A CN109617359A (en) | 2018-11-01 | 2018-11-01 | Reduce line inductance electromotor laterally and longitudinally end effect method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811292763.2A CN109617359A (en) | 2018-11-01 | 2018-11-01 | Reduce line inductance electromotor laterally and longitudinally end effect method |
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|---|---|
| CN109617359A true CN109617359A (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811292763.2A Pending CN109617359A (en) | 2018-11-01 | 2018-11-01 | Reduce line inductance electromotor laterally and longitudinally end effect method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179816A1 (en) * | 2020-03-11 | 2021-09-16 | 中车青岛四方机车车辆股份有限公司 | Linear motor for maglev train, and maglev train |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4255680A (en) * | 1978-12-19 | 1981-03-10 | Popov Alexandr D | Linear induction motor |
| JPS6216060A (en) * | 1985-07-10 | 1987-01-24 | Hitachi Kiden Kogyo Ltd | Linear stepping motor |
| CN104167897A (en) * | 2014-08-29 | 2014-11-26 | 东南大学 | Flat-plate-type transverse magnetic flux switching permanent magnet linear motor |
| CN108365730A (en) * | 2018-03-08 | 2018-08-03 | 华中科技大学 | The short primary LEM that a kind of dynamic longitudinal direction end effect weakens |
-
2018
- 2018-11-01 CN CN201811292763.2A patent/CN109617359A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4255680A (en) * | 1978-12-19 | 1981-03-10 | Popov Alexandr D | Linear induction motor |
| JPS6216060A (en) * | 1985-07-10 | 1987-01-24 | Hitachi Kiden Kogyo Ltd | Linear stepping motor |
| CN104167897A (en) * | 2014-08-29 | 2014-11-26 | 东南大学 | Flat-plate-type transverse magnetic flux switching permanent magnet linear motor |
| CN108365730A (en) * | 2018-03-08 | 2018-08-03 | 华中科技大学 | The short primary LEM that a kind of dynamic longitudinal direction end effect weakens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179816A1 (en) * | 2020-03-11 | 2021-09-16 | 中车青岛四方机车车辆股份有限公司 | Linear motor for maglev train, and maglev train |
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Application publication date: 20190412 |