CN104578506B - Segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor - Google Patents
Segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor Download PDFInfo
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- CN104578506B CN104578506B CN201510045700.7A CN201510045700A CN104578506B CN 104578506 B CN104578506 B CN 104578506B CN 201510045700 A CN201510045700 A CN 201510045700A CN 104578506 B CN104578506 B CN 104578506B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
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Abstract
The invention discloses segmented secondary formula magnetic circuit complementary primary electrical excitation linear motors, including primary and secondary, it is arranged alternately in its magnetic teeth and concentrates armature winding and concentrate Exciting Windings for Transverse Differential Protection, the magnetic field that any one central excitation winding generates opposite with the magnetic direction that the central excitation winding away from nearest neighbours generates；Primary magnetic conduction tooth is equipped with 2*m*k*n and concentrates armature winding and 2*m*k*n+1 central excitation winding；Secondary be equipped with is segmented magnetic inductive block, and the ratio between secondary and primary pole span is at or about 4*m*k/ (2*m*k ± 1).Motor of the present invention has the features such as brushless, second son is simple in structure, every phase back-emf is symmetrical and near sinusoidal, thrust calculation are small, primary excitation, can be used for the fields such as urban track traffic drive system, vertical hoisting system, electromagnetic ejection system；The occasions such as seawave power generation are also applied for, by adjusting the size of exciting current, to achieve the effect that speed constant pressure output and the output of constant speed transformation.
Description
Technical field
The present invention relates to a kind of primary electrical field excitation linear motors, and in particular to be segmented secondary formula magnetic circuit complementary type
Primary electrical field excitation linear motor, belongs to technical field of motor manufacture.
Background technology
With the development of industry, linear motor is widely used.Requirement of the every field to driving motor and system
It is higher and higher, the type of drive of linear motion is converted rotational motion into more and more not using electric rotating machine and mechanical switching device
Corresponding requirements can be met, and use linear motor driving that can reduce cost, reduce system bulk, reduce noise.In such as track
Traffic, high-rise building elevator, factory transport etc. occasions, using electric rotating machine will appear driving it is complicated, of high cost, dynamic response is slow
The problems such as.Therefore, electric rotating machine this technological means is replaced using linear motor, electric rotating machine can be overcome in upper upper of application
Disadvantage is stated, the efficiency of whole system is improved.
Line inductance electromotor is applied in Guangzhou Underground circuit at present.Line inductance electromotor is simple in structure, dimension
Shield is convenient, and system cost is low, plays a significant role in urban track traffic driving.But linear induction engine efficiency and work(
Rate factor is low, and speed adjusting performance is bad, and control is complicated, and performance still can not be compared with direct current generator.
Linear permanent magnet synchronous motor does not have Exciting Windings for Transverse Differential Protection, has many advantages, such as that efficient, power density is high.But tradition is straight
The winding and permanent magnet of line permanent magnet synchronous motor are individually positioned in the primary and secondary of motor, in the long stators application such as rail traffic
Permanent magnet or armature winding can bring the problem that cost is excessive, maintenance is inconvenient along track laying in occasion.And permanent magnet is dilute
There is material, expensive, performance is sensitive to factors such as environment temperature, mechanical oscillation, it is not easy to realize weak magnetic control, control system
Complexity, in rail traffic application scenario, there are many disadvantages.
Invention content
Technical problem to be solved：
In view of the shortcomings of the prior art, equal purpose of the present invention is to be to provide a kind of armature winding and Exciting Windings for Transverse Differential Protection
It is placed in primary and can individually control, the magnetic circuit complementary primary electrical excitation linear motor of back-emf near sinusoidal.
Technical solution：
In order to achieve the above functions, the present invention provides a kind of segmented secondary formula magnetic circuit complementary primary electrical excitation straight-line electrics
Machine, including primary 11 are all permeability magnetic material with secondary 10, described primary 11 and secondary 10 and have air gap therebetween, described first
Grade 11 is equipped with magnetic teeth 110, is arranged alternately in magnetic teeth 110 and concentrates armature winding 111 and concentrate Exciting Windings for Transverse Differential Protection 112, special
Sign is,
The number of primary 11 magnetic teeth 110 is Ns=4*m*k*n+1, and adjacent two magnetic teeths, 110 center line distance is first
11 pole span τ of gradep；Be wound in the magnetic teeth 110 2*m*k*n+1 central excitation winding 112 and 2*m*k*n concentration armature around
The magnetic teeth 110 of group 111, setting central excitation winding 112 is known as Exciting Windings for Transverse Differential Protection magnetic teeth, and armature winding 111 is concentrated in setting
Magnetic teeth 110 be known as armature winding magnetic teeth, described secondary 10 be equipped with segmentation magnetic inductive block, it is adjacent two segmentation magnetic inductive block center line away from
From for secondary pole span τs, τs/τp=4*m*k/(2*m*k ± 1) or τs/τp≈4*m*k / (2*m*k±1)；
The central excitation winding 112 and concentration armature winding 111 are disposed alternately on primary magnetic conduction tooth 110, any one
The magnetic field that a central excitation winding 112 generates is opposite with the magnetic direction that the central excitation winding 112 away from nearest neighbours generates；
Wherein, m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number, and k is any one in each electric motor units
Concatenated 111 logarithm of concentration armature winding of phase armature winding.
Further, the central excitation winding 112 in each electric motor units is to be connected in series with, excitation winding element,
Exciting Windings for Transverse Differential Protection unit serial or parallel connection connection between each electric motor units.
Further, in each electric motor units any one phase armature winding by k to concentrating armature winding 111 to connect, from the
It concentrates armature winding 111 to play the concentration armature winding 111 that k are placed in adjacent armature winding magnetic teeth for one and belongs to same
Phase is arranged alternately thereafter k concentration armature winding 111 for belonging to adjacent phase, according to above-mentioned successively in armature winding magnetic teeth
Arrangement mode, belong to same phase 2k concentrate armature winding 111 to form k to armature winding in complementary sets 111, wherein any pair
Concentrate two in armature winding armature winding 111 and the relative position of secondary 10 is concentrated to differ half 10 pole span of grade, it is corresponding
For 180 degree electric angle, there is complementary characteristic, n electric motor units to set gradually, same phase is belonged in different electric motor units for the two
Armature winding 111 is concentrated to be connected in series or in parallel.
As a preferred embodiment, the central excitation winding 112 and concentration armature winding 111 are copper or superconductor.
As a preferred embodiment, the motor further includes respectively increasing an additional magnetic teeth 113 at primary 11 both ends.
As a preferred embodiment, the motor is additionally provided with a moving component, described primary 11 and secondary 10 1 be fixed part
Part is fixed component with described primary 11 or secondary 10, another is moving component, following with primary 11 upper edges or secondary 10
Along being axis flip vertical, the motor of bilateral slab construction is constituted.
As a preferred embodiment, the segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor is motor or power generation
Machine.
Advantageous effect：
Segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor provided by the invention is motor or generator, is made
For motor running when, by change exciting current size can improve output-constant operation velocity interval, as generator transport
When row, by changing the size of exciting current, counter electromotive force constant under friction speed can be obtained.
The present invention is particularly suitable for wide range speed control and drives occasion, such as urban track traffic driving is directly as the driving motor used time
Line motor etc. needs the application scenario of wide speed regulating range；The present invention is also particularly suitable for using as generator, is used for seawave power generation
Etc. occasions, the electric machine structure is simple, secondary be only made of magnetic inductive block, light-weight, armature winding and Exciting Windings for Transverse Differential Protection are placed in primary,
By adjusting the size of exciting current, to reach speed constant pressure output and constant speed transformation output characteristics.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples：
Fig. 11 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention；
Fig. 22 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention；
Fig. 33 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention；
Fig. 44 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention；
Fig. 55 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention；
Fig. 65 another electric machine structures of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention show
It is intended to；
Fig. 76 electric machine structure schematic diagrames of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor embodiment of the present invention.
Specific implementation mode
The present invention provides a kind of segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor, to make the mesh of the present invention
, technical solution and effect are clearer, clear, and with reference to attached drawing and give an actual example that the present invention is described in more detail.It answers
Work as understanding, specific implementation described herein is not intended to limit the present invention only to explain the present invention.
Embodiment 1
Referring to Fig. 1, segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor of the invention include primary 11 and time
Grade 10, primary 11 and secondary 10 are all permeability magnetic material and there is therebetween air gap, primary 11 to be equipped with magnetic teeth 110, magnetic conduction
It is arranged alternately central excitation winding 112 on tooth 110 and concentrates armature winding 111.In the present embodiment motor, m=3, k=1, n=1,
In, m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number, and k is that a phase armature winding is connected in each electric motor units
Concentration armature winding logarithm.That is, the motor is three phase electric machine, there is A, B, C three-phase, include 1 electric motor units, Mei Ge electricity
There is k=1 pair to concentrate armature winding in machine unit.So the number of primary 11 magnetic teeths 110 is Ns=4*m*k*n+1=13, magnetic teeth
110 be equipped with central excitation winding 112 numbers be 2*m*k*n+1=7, be equipped with concentrate armature winding 111 number be 2*m*k*n=
6；The ratio between secondary 10 and primary 11 pole spans are τs/τp=4*m*k/ (2*m*k ± 1) or τs/τp≈ 4*m*k/ (2*m*k ± 1) can use
τs/τp=12/5,12/7 or τs/τp≈ 12/5,12/7, the present embodiment takes τs/τp=12/7.Central excitation winding 112 and concentration electricity
Pivot winding 111 is disposed alternately on primary magnetic conduction tooth 110, any one central excitation winding 112 generate magnetic field with apart from it
The magnetic direction that nearest central excitation winding 112 generates is opposite.
In each electric motor units of motor of the present invention, central excitation winding 112 and concentration armature winding 111 are disposed alternately at
On primary magnetic conduction tooth 110, the number of central excitation winding 112 is 2*m*k*n+1, and it is 2*m* to concentrate the number of armature winding 111
K*n, any one phase armature winding it is concatenated to concentrate the logarithm of armature winding 111 be k, setting concentrates armature winding 111 to lead
Magnetic tooth 110 is known as armature winding magnetic teeth, and the magnetic teeth 110 of setting central excitation winding 112 is known as Exciting Windings for Transverse Differential Protection magnetic teeth；m
The arrangement mode of phase armature winding spatially has following features, has k to be placed in phase from first is concentrated armature winding 111
Concentration armature winding 111 in adjacent armature winding magnetic teeth belongs to same phase, is handed over successively in armature winding magnetic teeth thereafter
Belong to adjacent phase for setting k concentrates armature winding 111 to belong to 2k concentration armature of same phase according to above-mentioned arrangement mode
Winding 111 forms k to armature winding in complementary sets, wherein concentrating two concentration armature winding in armature winding for any pair
111 differ half 10 pole span of grade with the relative position of secondary 10, correspond to 180 degree electric angle, are composed in series a phase winding
When, the back-emf harmonic wave in complementary concentration armature winding is cancelled out each other, and phase potential is more sinusoidal.The phase electricity of n electric motor units
The on-link mode (OLM) of pivot winding is identical, and the Exciting Windings for Transverse Differential Protection in each electric motor units is composed in series Exciting Windings for Transverse Differential Protection unit, n electric motor units
Exciting Windings for Transverse Differential Protection be serial or parallel connection connection.
By k=1 in this present embodiment, therefore it is disposed alternately at of on primary magnetic conduction tooth 110 concentration armature winding 111
Number is 6, and the number of central excitation winding 112 is 7, wherein belonging to out of phase armature winding A, B, C are alternately placed in armature successively
In winding magnetic teeth 110, belong to same phase 2 concentrate armature winding 111 to form armature winding in 1 pair of complementary sets, two concentrations
Armature winding 111 differs half 10 pole span of grade with the relative position of secondary 10, and corresponding electromagnetic property spatially differs 180 degree
Electric angle.If A phases two concentrate armature winding A1 and A2 in Fig. 1, at this point, concentrating the 11 tooth center of primary where armature winding A1
Line faces secondary 10 module centers lines, and the 11 tooth center line of primary where concentrating armature winding A2 faces twice 10 moulds of grade
Center line between block, the two differ half 10 pole span of grade with the relative position of secondary 10, and the two spatially differs 180 degree
Electric angle.By the way that A1 is rationally arranged, A2 coilings can be such that the two back-emf is overlapped mutually.Therefore, central excitation winding 112 is logical
After entering direct current, concentrate armature winding A1 and A2 be composed in series the back-emf fundamental wave values of A phase windings about it is each concentrate armature around
2 times of back-emf fundamental wave value in group.But when primary 11 moves 360 ° of an electrical cycle（That is, mobile 10 pole of secondary
Away from）In the process, A phases concentrate armature winding A1 and A2 there are the differences on magnetic circuit with secondary 10 relative positions.Position as shown in Figure 1
When, as assumed, it is approximately zero to concentrate the magnetic linkage in armature winding A1 at this time, and armature winding is concentrated in referred to as the first equilbrium position at this time
Magnetic linkage in A2 is also approximately at zero, due to concentrating armature winding A2 different from the position of A1 relative secondaries 10, differs half grade
10 pole spans, therefore the position is known as the second equilbrium position.During primary 11 moves right an electrical cycle, A phases are concentrated
Magnetic linkage amplitude change procedure is in armature winding A1：First equilbrium position --- positive maximum amplitude --- the second equilbrium position ---
Negative maximum amplitude --- the first equilbrium position；And A phases concentrate the magnetic linkage amplitude change procedure in armature winding A2 to be：Second balance position
Set --- positive maximum amplitude --- the first equilbrium position --- negative maximum amplitude --- second equilbrium position.Therefore, two parts electricity
Magnetic linkage variation tendency symmetrical complement in pivot winding.It is bipolarity magnetic that A phases, which concentrate the magnetic linkage generated in armature winding A1 and A2 all,
Chain (that is, have just have negative), this feature is different from traditional double-salient-pole electrical excitation linear motor.A phases concentrate armature winding A1 and A2
The counter potential waveform of middle generation also has symmetry, and after being composed in series A phase windings, harmonic component is cancelled out each other, obtained phase
Back-emf has preferable sinuso sine protractor, to reduce force oscillation.
B, C two-phase equally have the characteristics that A phases, 120 ° of electrical angles of phase mutual deviation between three-phase.
When motor needs to operate in high speed, reduce the size of DC excitation electric current, to reduce the excitation field of motor
Intensity reaches speed governing purpose.When needing to increase motor thrust when low speed, DC excitation electric current can be increased, improve thrust.
Embodiment 2
Fig. 2 is also a segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor.In the present embodiment, k=1, n=2,
M=3, that is, the motor is three phase electric machine, includes 2 electric motor units, has k=1 pair to concentrate armature winding in each electric motor units.
So the number of primary 11 magnetic teeths 110 is Ns=4*m*k*n+1=25, magnetic teeth 110, which is equipped with, concentrates armature winding 111
Number is 2*m*k*n=12, and the number for being equipped with central excitation winding 112 is 2*m*k*n+1=13；The ratio between secondary and primary pole span are
τs/τp=4*m*k/ (2*m*k ± 1) or τs/τp≈ 4*m*k/ (2*m*k ± 1) can use τs/τp=12/5,12/7 or τs/τp≈12/
5,12/7, the present embodiment takes τs/τp=12/7.Exciting Windings for Transverse Differential Protection coupled in series composition first in primary 11 in first motor unit is encouraged
Magnetic winding element, magnetic direction caused by adjacent two central excitations winding on the contrary, A phases armature winding by two concentration armatures around
A1 is organized, A2 is composed in series.Half 10 pole span of grade of relative position mutual deviation of armature winding A1 and A2 and secondary 10 are concentrated, it is corresponding
180 degree electric angle.Therefore, concentrate armature winding A1 and A2 that there is complementary characteristic, when the two is composed in series A phase windings, wherein
Generated back-emf harmonic content is cancelled out each other, and opposite potential is more sinusoidal.Equally, the central excitation in the second electric motor units around
Also therefore the characteristic with first motor unit is concentrated between armature winding A3 and A4 by group 112 and concentration armature winding A3 and A4
Also there is complementary characteristic.First Exciting Windings for Transverse Differential Protection unit and the second Exciting Windings for Transverse Differential Protection unit can be connected in series or in parallel Exciting Windings for Transverse Differential Protection, when
When concentration armature winding A1, A2, A3 and A4 in two electric motor units are composed in series A phase windings, the anti-electricity that is generated in concentratred winding
Gesture higher hamonic wave is cancelled out each other, and A phase winding back-emf fundamental voltage amplitudes are approximately concentratred winding A1, A2, A3 and A4 fundamental voltage amplitudes
Four times, there is preferable sinuso sine protractor.
Embodiment 3
Fig. 3 is also a segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor.In the present embodiment, k=2, n=1,
M=3, the i.e. motor are three phase electric machine, include 1 electric motor units, have k=2 pair to concentrate armature winding, institute in each electric motor units
Number with primary 11 magnetic teeths 110 is Ns=4*m*k*n+1=25, and the number that magnetic teeth 110 is equipped with concentration armature winding 111 is
2*m*k*n=12, the number for being equipped with central excitation winding 112 are 2*m*k*n+1=13；The ratio between secondary and primary pole span is τs/τp=
4*m*k/ (2*m*k ± 1) or τs/τp≈ 4*m*k/ (2*m*k ± 1) can use τs/τp=24/11,24/13 or τs/τp≈ 24/11,
24/13, the present embodiment takes τs/τp=24/13.As it can be seen that the central excitation winding 112 of the present embodiment motor and concentration armature winding
111 are disposed alternately on primary magnetic conduction tooth 110, any one phase armature winding it is concatenated concentrate armature winding 111 logarithm be k
=2, the arrangement mode of threephase armature winding spatially has the characteristics that, from first is concentrated armature winding, there is k=2
Being placed in two adjacent armature winding magnetic teeths concentrates armature winding to belong to same phase（As concentrated armature winding A1, A1 ' in Fig. 3
Belong to A phases）, k concentration armature winding for belonging to adjacent phase is arranged alternately successively in armature winding magnetic teeth thereafter, according to upper
State arrangement mode, the arrangement mode of armature winding is in three-phase set：A1A1’ —B1B1’ —C1C1’ —A2A2’ —
B2B2’—C2C2’.2k=4 for belonging to same phase concentrate armature winding to form armature winding in the complementary sets of k=2 pair, wherein any one
To concentrating two concentration armature winding in armature winding（Such as concentrate armature winding A1 and A2 or A1 ' and A2 '）With secondary phase
Half grade pole span is differed to position, corresponds to 180 degree electric angle, forms complementary structure, when being composed in series a phase winding, mutually
Back-emf harmonic wave in the concentration armature winding of benefit is cancelled out each other, and phase potential is more sinusoidal.It is worth noting that due to concentrating electricity
Pivot winding A1 and A1 ', A2 and A2 ' with secondary 10 relative position be closer to, concentratred winding A1, A1 ', A2 and A2 ' are composed in series A
When phase winding, A phase winding back-emf amplitudes are slightly smaller than four times of concentratred winding A1, A1 ', A2 and A2 ' fundamental voltage amplitude.
Embodiment 4
Fig. 4 is a five phase segmented secondary formula magnetic circuit complementary primary electrical excitation linear motors.In the present embodiment, k=1, n=
1, m=5, i.e. the motor is five-phase induction motor, includes 1 electric motor units, has k=1 pair to concentrate armature winding in each electric motor units,
So the number of primary 11 magnetic teeths 110 is Ns=4*m*k*n+1=21, magnetic teeth 110 is equipped with the number for concentrating armature winding 111
For 2*m*k*n=10, the number for being equipped with central excitation winding 112 is 2*m*k*n+1=11；The ratio between secondary and primary pole span is τs/τp
=4*m*k/ (2*m*k ± 1) or τs/τp≈ 4*m*k/ (2*m*k ± 1) can use τs/τp=20/9,20/11 or τs/τp≈ 20/9,
20/11, the present embodiment takes τs/τp=20/11。
In the present embodiment five-phase induction motor, it is composed in series by two concentration armature winding per phase winding, as A phase windings are concentrated by two
Armature winding A1 and A2 composition, at this point, the primary teeth center line where concentrating armature winding A1 faces secondary module center line,
And the primary teeth center line where concentrating armature winding A2 faces the center line between two secondary modules.Therefore, the motor is same
Sample has magnetic circuit complementary characteristic proposed by the invention, and often generated back-emf harmonic component is cancelled in phase armature winding,
Sine degree of back electromotive force is good, and thrust calculation is small.
Embodiment 5
Fig. 5 and Fig. 6 is the bilateral segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor of a three-phase, this implementation
5 motor of illustration can be developed to obtain by two 1 motor overturnings of identical embodiment, and overturning evolutionary step is as follows：By one embodiment 1
Motor overlaps the 11 yoke portion of primary of two motors using primary 11 upper edges as flip vertical is done in axial direction, is reduced or removed just
11 yoke portions of grade, you can obtain a kind of primary without the secondary bilateral electrical excitation linear motor in yoke portion.11 corresponding excitations of primary up and down
Exciting current direction in magnetic teeth 110 is consistent, and excitation field is through magnetic teeth 110, air gap, secondary magnetic inductive block where Exciting Windings for Transverse Differential Protection
And magnetic teeth 110 constitutes series circuit where armature winding.The present embodiment feature is primary 11 by bilateral secondary 10 normal direction
Suction is cancelled out each other, to reduce the frictional dissipation of system；Primary 11 yoke portion materials are saved, system cost is reduced, improve dynamic
Performance.The present embodiment Fig. 6 motors also can be developed to obtain by two 1 motor overturnings of identical embodiment, and overturning evolutionary step is as follows：
By 1 motor of one embodiment using secondary 10 lower edges as axial direction under do flip vertical, by the merging of secondary 10 of two motors, simultaneously
By the exciting current direction in upper and lower primary 11 corresponding excitation magnetic teeth 110 on the contrary, the excitation field per one side is encouraged through it
Magnetic teeth 110, primary yoke portion, air gap, secondary magnetic inductive block and its magnetic teeth 110 where armature winding constitute parallel connection where magnetic winding
Magnetic circuit, you can obtain a kind of bilateral segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor.In addition, being implemented by multiple
Example motor, can also obtain multiple new motor modules, the present invention is no longer described in detail according to the method for embodiment 2,3 and 4.
Embodiment 6
Fig. 7 is also a three-phase magnetic circuit complementary primary electrical excitation linear motor, and the present embodiment and 1 motor of embodiment are not
It is only that with place, 11 both sides of primary of the present embodiment respectively increase an additional magnetic teeth 113, therefore the present embodiment motor is same
Has the characteristics of motor of the present invention.
The primary and secondary one of the magnetic circuit complementary primary electrical excitation linear motor of the present invention is fixed component, another
For moving component, structure is side slab construction, or constitutes bilateral slab construction, may operate in motor or generator shape
State.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor, including primary（11）And secondary（10）, the primary
（11）And secondary（10）All it is permeability magnetic material and there is therebetween air gap, the primary（11）It is equipped with magnetic teeth (110), is led
Magnetic tooth（110）On be arranged alternately concentration armature winding（111）With concentration Exciting Windings for Transverse Differential Protection（112）, which is characterized in that
The primary（11）Magnetic teeth（110）Number be Ns=4*m*k*n+1, adjacent two magnetic teeth（110）Center line distance is
It is primary（11）Pole span τp, central excitation winding is set（112）Magnetic teeth（110）Referred to as Exciting Windings for Transverse Differential Protection magnetic teeth, setting are concentrated
Armature winding（111）Magnetic teeth（110）Referred to as armature winding magnetic teeth；The magnetic teeth（110）On be wound with 2*m*k*n+1
Central excitation winding（112）With 2*m*k*n concentration armature winding（111）, the secondary（10）It is adjacent equipped with segmentation magnetic inductive block
Two segmentation magnetic inductive block center line distances are secondary pole span τs, τs /τp=4*m*k/(2*m*k+1) or τs /τp≈4*m*k /
(2*m*k-1)；
The central excitation winding（112）With concentration armature winding（111）It is disposed alternately at primary magnetic conduction tooth（110）On, arbitrarily
One central excitation winding（112）The magnetic field of generation and the central excitation winding away from nearest neighbours（112）The magnetic direction of generation
On the contrary；
Wherein, m is the number of phases of motor, and n and k are positive integer, and n is electric motor units number, and k is any one phase electricity in each electric motor units
The concentration armature winding of pivot windings in series（111）Logarithm；
By the motor with primary（11）Upper edge is to do flip vertical in axial direction, by the primary of two motors（11）Yoke portion weight
It closes, primary is reduced or removed（11）It is primary without the secondary bilateral electrical excitation linear motor in yoke portion to obtain one for yoke portion；
Alternatively, by the motor with secondary（10）Lower edge is to do flip vertical under axial direction, by the secondary of two motors（10）It closes
And it while will be primary up and down（11）Corresponding excitation magnetic teeth（110）On exciting current direction on the contrary, per one side excitation
Magnetic field is through magnetic teeth where its Exciting Windings for Transverse Differential Protection（110）, primary yoke portion, air gap, magnetic conduction where secondary magnetic inductive block and its armature winding
Tooth（110）Parallel circuits are constituted, a bilateral segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor is obtained.
2. segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor according to claim 1, which is characterized in that every
Central excitation winding in a electric motor units（112）To be connected in series with, excitation winding element, between n electric motor units
Exciting Windings for Transverse Differential Protection unit serial or parallel connection couples.
3. segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor according to claim 1, which is characterized in that every
In a electric motor units any one phase armature winding by k to concentrate armature winding（111）Series connection, from first concentration armature winding
（111）Rising has the k concentration armature winding being placed in adjacent armature winding magnetic teeth（111）Belong to same phase, thereafter in electricity
K concentration armature winding for belonging to adjacent phase is arranged alternately in pivot winding magnetic teeth successively（111）, according to above-mentioned arrangement mode,
Belong to 2k concentration armature winding of same phase（111）K is formed to armature winding in complementary sets（111）, wherein any pair of concentration
Two concentration armature winding in armature winding（111）With secondary（10）Relative position differ half grade（10）Pole span, it is right
180 degree electric angle is should be, there is complementary characteristic, n electric motor units to set gradually, same phase is belonged in different electric motor units for the two
Concentration armature winding（111）It is connected in series or in parallel.
4. segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor according to claim 1, which is characterized in that institute
State central excitation winding（112）With concentration armature winding（111）For copper or superconductor.
5. segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor according to claim 1, which is characterized in that should
Motor further includes in primary（11）Both ends respectively increase an additional magnetic teeth（113）.
6. the segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor according to claim 1 to 5 any one,
It is characterized in that, the segmented secondary formula magnetic circuit complementary primary electrical excitation linear motor is motor or generator.
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| CN110880840A (en) * | 2019-12-25 | 2020-03-13 | 江西麦克斯韦科技有限公司 | Processing method for reducing copper consumption at end part of single-layer winding motor |
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