CN108377083A - A kind of cylindrical linear motor - Google Patents
A kind of cylindrical linear motor Download PDFInfo
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- CN108377083A CN108377083A CN201810214400.0A CN201810214400A CN108377083A CN 108377083 A CN108377083 A CN 108377083A CN 201810214400 A CN201810214400 A CN 201810214400A CN 108377083 A CN108377083 A CN 108377083A
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- pole
- salient
- permanent magnet
- primary
- linear motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Linear Motors (AREA)
Abstract
The present invention relates to a kind of cylindrical linear motors comprising：Primary structure, secondary structure, multigroup 13rd salient-pole structure, multiple third permanent magnets, multiple 4th permanent magnets, multiple first windings and multiple second windings, primary structure and secondary structure are cylindrical shape, primary structure ring set is in the outside of secondary structure, secondary structure is coaxially disposed with primary structure, and multiple 4th permanent magnets are mounted on the outer wall of secondary structure；One end of 13rd salient-pole structure is mounted on the inner wall of primary structure, and multiple third permanent magnets, multiple first windings and multiple second windings are installed on multiple 13rd salient-pole structures.Winding is all placed on the static side of primary structure and so that secondary structure is simple in structure, cost reduction, in addition, secondary structure is placed in seawater, corrosion will not be generated to permanent magnet winding, easy to maintain, reliability is high.In addition, being provided with the permanent magnet for playing booster action simultaneously on secondary structure, the magnetic field force of linear motor is further increased.
Description
Technical field
The present invention relates to direct-drive type wave-activated power generation technical field more particularly to a kind of cylindrical linear motors.
Background technology
Linear motor be it is a kind of electric energy is directly changed into linear motion mechanical energy, without any intermediate conversion mechanism
Transmission device.In the prior art, the winding of linear motor and permanent magnet are usually separately positioned on the primary of linear motor
It is not to be placed on motor side simultaneously or in secondary；In linear motor motion process, secondary can drive permanent magnet and around
Group moves back and forth, and secondary is usually made of permeability magnetic material, and under type frequently reciprocating state, secondary will produce a large amount of heat
Amount causes permanent magnet that the generation of permanent magnet magnet loss phenomenon occurs because temperature is excessively high.
Invention content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of cylindrical linear motor.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of cylindrical linear motor comprising：Primary knot
Structure, secondary structure, multigroup 13rd salient-pole structure, multiple third permanent magnets, multiple 4th permanent magnets, multiple first windings and
Multiple second windings, the primary structure and the secondary structure are cylindrical shape, and the primary structure ring set is at described time
The outside of level structure, the secondary structure are coaxially disposed with the primary structure, and multiple 4th permanent magnets are mounted on described
On the outer wall of secondary structure；One end of 13rd salient-pole structure is mounted on the inner wall of the primary structure, multiple described
Third permanent magnet, multiple first windings and multiple second windings are installed on multiple 13rd salient-pole structures；It is described
13rd one end of salient-pole structure far from the primary structure is provided with multiple convex teeth portions, shape between the two neighboring convex teeth portion
At first concave part, second concave part is formed between two neighboring 13rd salient-pole structure, the third is forever
Magnet is overlapped in first concave part, and one end end face of the third permanent magnet is another with the 13rd salient-pole structure
Hold end face concordant, there are one the third permanent magnet, the two neighboring third permanent magnetism for setting in each first concave part
There are one the convex teeth portions for setting between body；First winding is coiled in the double wedge positioned at the 13rd salient-pole structure both sides
On portion's side wall, be arranged in the middle part of first winding the 13rd salient-pole structure be located at the third permanent magnet with it is described just
Part between level structure, is arranged that there are three convex teeth portion and two the first concave parts in the middle part of first winding；Described
Two windings are set in two neighboring 13rd salient-pole structure, on two convex teeth portions of neighbouring setting.
The beneficial effects of the invention are as follows：Winding is all placed on the static side of primary structure and so that secondary structure is simple in structure,
Cost reduction will not generate permanent magnet winding corrosion, easy to maintain, reliability is high in addition, secondary structure is placed in seawater.
In addition, being provided with the permanent magnet for playing booster action simultaneously on secondary structure, the magnetic field force of linear motor is further increased.Forever
Magnet and winding are all placed on the static side of primary structure and so that secondary structure is simple in structure, cost reduction, in addition, secondary structure
It is placed in seawater, corrosion will not be generated to permanent magnet winding, easy to maintain, reliability is high.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the primary structure includes：Multiple single-phase unit primary components,；A single-phase unit is primary
Component is that open circles are cyclic annular, and multigroup 13rd salient pole knot is provided on the internal ring wall of the single-phase unit primary components
Structure, multigroup 13rd salient-pole structure along the circumferential direction go up spaced set in the single-phase unit primary components inner wall.
Advantageous effect using above-mentioned further scheme is：It is spliced to form primary by multiple single-phase unit primary components
Structure, on the one hand, increase the expulsion force that primary structure generates secondary structure, improve the power performance of linear motor；So that straight
Line motor can adjust the length of secondary structure according to actual needs, to expand or reduce the stroke of linear motor；It is another
Aspect decouples between each unit motor, and detent force can be offset by the reason of multiple-unit motor, is convenient for the maintenance of primary structure
And assembling.
Further, multiple third permanent magnets and multiple 4th permanent magnets radially magnetize.
Advantageous effect using above-mentioned further scheme is：By setting the magnetic field of linear motor to radial magnetic field, make
It obtains magnetic line of force direction and the direction of motion is vertical, electric load and magnetic loading decoupling, primary structure axial direction can do m unit structure
At multiple-unit motor, radial flux linear motor side end power is reduced.Permanent magnet is placed on primary structure, and permanent magnet radially fills
Magnetic improves the pushing force density of linear motor, reduces the quality of secondary structure.
Further, width of first concave part in primary structure axial direction and the convex teeth portion are in primary structure axis
The ratio range of width on direction is：0.8-1.2.
Advantageous effect using above-mentioned further scheme is：By the way that the convex teeth portion and concave part of special parameter is arranged, carry
High sine degree of back electromotive force so that decoupled per between multiple-unit motor, detent force can be offset by the reason of multiple-unit motor.
Further, the convex teeth portion is spaced in the axial direction by multiple 9th laminations and is staggeredly formed by stacking；
Multiple 9th laminations are silicon steel sheet.
Advantageous effect using above-mentioned further scheme is：So that primary lamination manufacture processing is simple, convenient for primary
The installation of structure improves the production efficiency of linear motor.
Further, the one end of the 13rd salient-pole structure far from the secondary structure is an integral structure.
Advantageous effect using above-mentioned further scheme is：By the way that one end setting of secondary structure is an integral structure,
So that permanent magnet does not run through salient-pole structure directly, motor works, and fault-tolerance is strong, and operational reliability is high, and force density is high.
Further, the secondary structure includes：Multiple 14th salient-pole structures, the 14th salient-pole structure is by multiple
5th lamination and multiple 6th laminations are spaced in the axial direction and be staggeredly formed by stacking, each 5th lamination with
And each 6th lamination is circular ring shape, the side of each 5th lamination is provided with symmetrical three pairs of flanges two-by-two；
Multiple 14th salient-pole structures are folded with third concave part in the axial direction, and the 4th permanent magnet is plugged on described
In three concave parts.
Advantageous effect using above-mentioned further scheme is：The interlaced bulge-structure for forming secondary structure of flange, makes
It is simple to obtain secondary lamination manufacture processing, is convenient for the installation of secondary structure, improves the production efficiency of linear motor, secondary structure
Operational reliability height, secondary structure light weight, dynamic response are good, can improve the power energy quality of generator；With the prior art
In linear motor compare, do not have winding on secondary structure, the permanent magnet with fraction on secondary structure so that the present invention
Cylindrical linear motor light weight, control response is sensitive, be convenient for fault-tolerant operation and control.Permanent magnet is placed on primary structure,
And permanent magnet radial magnetizing, the pushing force density of linear motor is improved, the quality of secondary structure is reduced.
Further, the ratio range of the secondary structure pole span and the primary structure pole span is：0.9-1.8, it is described
The secondary facewidth and the ratio range of the secondary pole span are：0.3-0.7.
Advantageous effect using above-mentioned further scheme is：By the way that secondary structure pole span and the primary structure pole span is arranged
Parameter so that linear motor sine degree of back electromotive force is high, is decoupled between each unit motor, and detent force can pass through multiple-unit electricity
The reason of machine, offsets.
Further, the third permanent magnet and the 4th permanent magnet are made of NdFeB material.
Advantageous effect using above-mentioned further scheme is：Improve the reliability of permanent magnet.
Description of the drawings
Fig. 1 is one of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 2 is the two of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 3 is the three of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 4 is the four of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 5 is the five of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 6 is the six of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 7 is the seven of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 8 is the eight of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 9 is the nine of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 10 is the ten of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 11 is the 11 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 12 is the 12 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 13 is the 13 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 14 is the 14 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 15 is the 15 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 16 is the 16 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 17 is the 17 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 18 is the 18 of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Figure 19 is the 19 of the schematic block diagram of linear motor provided in an embodiment of the present invention.
Drawing reference numeral explanation：
1- primary structures；The 13rd salient-pole structures of 11-；111- convex teeth portions；The first concave parts of 112A-；The second grooves of 112B-
Portion；12A- third permanent magnets；The 4th permanent magnets of 12B-；The first windings of 13A-；The second windings of 13B-；The single-phase units of 14- are primary
Component；The 7th laminations of 15-；The 8th laminations of 16-；The 9th laminations of 17-；2- secondary structures；The 14th salient-pole structures of 21-；25- thirds
Concave part；The 5th laminations of 31-；The 6th laminations of 32-.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
It should be noted that the cylindrical linear motor of the embodiment of the present invention can be, but not limited to apply in direct-drive type wavy hair
Electro-technical field, as direct-drive type wave-activated power generation generator, certain those skilled in the art should can it is readily conceivable that this
The cylindrical linear motor of invention is also used as motor applications in other field.
As shown in Fig. 1 to Figure 19, Fig. 1 is one of the schematic block diagram of linear motor provided in an embodiment of the present invention；
Fig. 2 is the two of the schematic block diagram of linear motor provided in an embodiment of the present invention；Fig. 3 is provided in an embodiment of the present invention straight
The three of the schematic block diagram of line motor；Fig. 4 be linear motor provided in an embodiment of the present invention schematic block diagram it
Four；Fig. 5 is the five of the schematic block diagram of linear motor provided in an embodiment of the present invention；Fig. 6 provides for the embodiment of the present invention
Linear motor schematic block diagram six；Fig. 7 is the schematic structure frame of linear motor provided in an embodiment of the present invention
The seven of figure；Fig. 8 is the eight of the schematic block diagram of linear motor provided in an embodiment of the present invention；Fig. 9 is the embodiment of the present invention
The nine of the schematic block diagram of the linear motor of offer；Figure 10 is the schematic knot of linear motor provided in an embodiment of the present invention
The ten of structure block diagram；Figure 11 is the 11 of the schematic block diagram of linear motor provided in an embodiment of the present invention；Figure 12 is this hair
The 12 of the schematic block diagram for the linear motor that bright embodiment provides；Figure 13 is linear motor provided in an embodiment of the present invention
Schematic block diagram 13；Figure 14 is the ten of the schematic block diagram of linear motor provided in an embodiment of the present invention
Four；Figure 15 is the 15 of the schematic block diagram of linear motor provided in an embodiment of the present invention；Figure 16 is the embodiment of the present invention
The 16 of the schematic block diagram of the linear motor of offer；Figure 17 is the schematic of linear motor provided in an embodiment of the present invention
The 17 of structure diagram；Figure 18 is the 18 of the schematic block diagram of linear motor provided in an embodiment of the present invention；Figure 19 is
The 19 of the schematic block diagram of linear motor provided in an embodiment of the present invention.
Embodiment 1
As shown in Fig. 2, the present invention provides a kind of cylindrical linear motor, which includes：Primary structure 1,
Secondary structure 2, multigroup 13rd salient-pole structure 11, multiple third permanent magnet 12A, multiple 4th permanent magnet 12B, multiple first around
Group 13A and multiple second winding 13B, the primary structure 1 and the secondary structure 2 are cylindrical shape, the primary knot
In the outside of the secondary structure 2, the secondary structure 2 is coaxially disposed 1 ring set of structure with the primary structure 1, and multiple described the
Four permanent magnet 12B are mounted on the outer wall of the secondary structure 2；One end of 13rd salient-pole structure 11 is mounted on described first
On the inner wall of level structure 1, multiple third permanent magnet 12A, multiple first winding 13A and multiple second winding 13B pacify
On multiple 13rd salient-pole structures 11；The one end of 13rd salient-pole structure 11 far from the primary structure 1 is set
It is equipped with multiple convex teeth portions 111, forms a first concave part 112A between the two neighboring convex teeth portion, two neighboring described the
One second concave part 112B, the third permanent magnet 12A are formed between 13 salient-pole structures 11 is overlapped on first groove
In portion 112A, one end end face of the third permanent magnet 12A is concordant with the other end face of the 13rd salient-pole structure 11, often
Setting is there are one the third permanent magnet 12A in a first concave part 112A, the two neighboring third permanent magnet 12A it
Between setting there are one the convex teeth portion 111；The first winding 13A is coiled in positioned at 11 both sides of the 13rd salient-pole structure
On convex teeth portion side wall, it is arranged with the 13rd salient-pole structure 11 in the middle part of the first winding 13A and is located at the third permanent magnetism
Part between body 12A and the primary structure 1, is arranged that there are three convex teeth portions 111 and two in the middle part of the first winding 13A
A first concave part 112A；Second winding is set in two neighboring 13rd salient-pole structure, neighbouring two be arranged are convex
In teeth portion.
Wherein, the present invention has preferably selected three single-phase unit primary components, has preferably selected 18 the tenth
Three salient-pole structures 11,18 the 13rd salient-pole structure 11 every six one group be separately mounted to three single-phase unit primary components
On；36 third permanent magnet 12A are preferably selected.
In practical applications, it is not limited to that 6 the 13rd salient pole knots are arranged on the inner wall of each single-phase unit primary components
The quantity of the 11, the 13rd salient-pole structure 11 of structure can be 6 multiple, for example, the quantity of the 13rd salient-pole structure 11 can be 6 or
Person 18 etc..The normal force of interference collateral motion can be offset.
In above structure, linear motor can be made of first pole structure 1 and secondary pole structure 2.Wherein, first 1 He of pole structure
Secondary 2 concentric of pole structure.In actual application, first 1 remains stationary of pole structure, only secondary pole structure 2 make reciprocal fortune in an axial direction
It is dynamic.The iron core of first pole structure 1 and time pole structure 2 is folded in an axial direction by silicon steel sheet to be composed.
In above structure, the 13rd salient-pole structure 11 can be the iron core of linear motor, and convex teeth portion 111 can be straight-line electric
The tooth of machine iron core, the first concave part 112A and the second concave part 112B can be the slot of linear motor iron core.At the beginning of linear motor
Pole structure 1 is not fully contacted with time pole structure 2, there is air gap between the two, each section just with time pole tie by the salient pole of pole structure 1
For the salient pole of structure 2 apart from equal, air gap thickness is also identical.Specifically, primary structure 1 is hollow cavity, can be in secondary structure 2
Two independent bearing spiders are respectively set in both ends, and secondary structure is suspended in the hollow cavity of primary structure 1 by bearing spider,
For preventing linear motor during the motion because friction generates resistance and fever, so that linear motor can work normally.
Figure 11 is the salient-pole structure of first pole, by convex teeth portion 111, third permanent magnet 12A, the 4th permanent magnet 12B, the first groove
Portion 112A and the second concave part 112B are constituted.There are armature winding, and each tenth in slot between each 13rd salient-pole structure 11
The group number of winding between three salient-pole structures 11 is consistent with number of motor phases.There is empty tooth at the top of convex teeth portion simultaneously, in Adjacent salient poles
There is the winding to match with width with empty groove height in adjacent void slot, empty slot here is concave part, the winding in empty slot
Group number is that number of motor phases subtracts one, and the armature winding placed in empty slot is serially connected with the armature winding in salient pole slot.In empty tooth top
There is permanent magnet identical with Virtual tooth widths in portion, and permanent magnet, which can not only play the role of clogging empty notch, blocks armature winding, and also
Larger effect can be generated to air-gap field.The specific magnetizing direction schematic diagram of permanent magnet is as shown in figure 11.In the outermost of salient pole
Winding is wound outside the tooth of side, the winding current direction wound on the salient pole of each row in an axial direction is consistent, but top winding with
In, in the winding of lower part current direction on the contrary, specific current direction such as Figure 15.
As shown in figure 15, the arrow in figure represents the flow direction of electric current in winding；13rd salient pole knot of the middle and upper parts Fig. 5
In UPPER (height) in the winding corresponding diagram 15 of structure 11, Fig. 5 in the winding corresponding diagram 15 of the 13rd salient-pole structure 11 at middle part
M I DDLE (in), the LOWER (low) in the winding corresponding diagram 15 of the 13rd salient-pole structure 11 of the middle and lower parts Fig. 5.The of top
The winding M I of the direction of current flow of the winding UPPER (height) of 13 salient-pole structures 11 and the 13rd salient-pole structure 11 at middle part
DDLE (in) direction of current flow and lower part the 13rd salient-pole structure 11 winding LOWER (low) electric current flowing side
To opposite.
Winding is all placed on the static side of primary structure and so that secondary structure is simple in structure, cost reduction, in addition, secondary knot
Structure is placed in seawater, corrosion will not be generated to permanent magnet winding, easy to maintain, reliability is high.In addition, on secondary structure simultaneously
It is provided with the permanent magnet for playing booster action, further increases the magnetic field force of linear motor.Permanent magnet and winding are all placed on primary
The static side of structure so that secondary structure is simple in structure, cost reduction, in addition, secondary structure is placed in seawater, it will not be to forever
Magnet winding generates corrosion, easy to maintain, and reliability is high.The normal force of interference collateral motion can be offset.
Embodiment 2
As shown in Figure 2 and Figure 8, on the basis of embodiment 1, the primary structure 2 of the present embodiment includes：It is multiple single-phase
One unit primary components 14；Wherein, un-conducted magnetic material plays every magnetic and the work being fixedly connected the primary components of each unit
With.The single-phase unit primary components 14 are that open circles are cyclic annular, are set on the internal ring wall of the single-phase unit primary components 14
It is equipped with multigroup 13rd salient-pole structure 11, multigroup 13rd salient-pole structure 11 is in the single-phase unit primary components
14 inner walls along the circumferential direction go up spaced set.
During production application, which can change the unit number of motor according to demand, therefore reality can be set
The unit number of motor is m, the diagrammatic cross-section of the single-phase symmetrical structure of Unit two of motor as shown in figure 4, motor first pole sectional view
As shown in figure 5, the main body of the single-phase just pole component of the motor is the silicon steel block of one piece of hollow cylinder as seen from the figure, in actual production
In the process, single-phase primary components are usually overlapped mutually by the platy structure of multiple open circles annular, it should be noted that more
The platy structure of a open circles annular can be silicon steel sheet, so that single-phase unit primary components can be with magnetic conduction, to be straight line
Motor provides magnetic flux path.Cylindrical inner wall is six group of first salient-pole structure 11.Section as shown in the figure shows to be three group the 13rd
Salient-pole structure 11, in addition three groups it is symmetrical according to section with it.And first pole structure is by two kinds of silicon steel sheet stacks as shown in Figure 6 to 8
It presses.Three cellular constructions of three groups of first pole module composition cylindrical linear motors, single-phase three cellular construction schematic diagrams such as Fig. 9 institutes
Show.In addition, as shown in Figure 10, the single-phase phase structure of Unit four can also be combined into.
By the way that the first winding 13A of linear motor and third permanent magnet 12A to be arranged to the primary structure 1 in remains stationary
On, it prevents from causing the appearance for leading to permanent magnet magnet loss phenomenon due to temperature is excessively high because of the movement of secondary structure 2.Permanent magnet and winding are all put
So that secondary structure is simple in structure in the static side of primary structure, cost reduction, in addition, secondary structure is placed in seawater, no
Corrosion can be generated to permanent magnet winding, easy to maintain, reliability is high.
It being compared with traditional transverse flux linear motor, third permanent magnet 12A of the invention is placed on 1 side of primary structure,
And radial magnetizing, the pushing force density of motor is improved, the quality of secondary structure 2 is alleviated, and is fabricated simple.And tradition
Cylindrical linear is compared, and magnetic field of the invention is radial magnetic field, and magnetic line of force direction and the direction of motion are vertical, electric load and magnetic
Load decouples, and axial direction can do m unit and constitute multiple-unit motor, is convenient for fault-tolerant operation and control.
It is spliced to form primary structure by multiple single-phase unit primary components, on the one hand, increase primary structure to secondary
The expulsion force that structure generates, improves the power performance of linear motor；Linear motor is allow to adjust secondary according to actual needs
The length of structure, to expand or reduce the stroke of linear motor；On the other hand, it is decoupled per between unit motor, detent force
It can be offset by the reason of multiple-unit motor, be convenient for the maintenance and assembling of primary structure.
Embodiment 3
As shown in Figure 12 to Figure 14, on the basis of embodiment 1, multiple third permanent magnet 12A of the present embodiment with
And multiple 4th permanent magnet 12B radially magnetize.
To make the flux density in air gap close to sine wave, each third permanent magnet 12A and each 4th permanent magnet 12B's
Magnetizing direction is not exactly the same, but all radially magnetizes, and each third permanent magnet 12A and each 4th permanent magnet 12B's fills
Magnetic direction schematic diagram is as shown in figure 12, and the downside of the third permanent magnet 12A of the leftmost side can be N grades in figure, the leftmost side in figure
The upside of third permanent magnet 12A can be S grades, remaining third permanent magnet 12A is similarly arranged；4th permanent magnet of the leftmost side in figure
The downside of 12B can be N grades, and the upside of the 4th permanent magnet 12B of the leftmost side can be S grades in figure, remaining the 4th permanent magnet 12B
Similarly it is arranged.
By setting the magnetic field of linear motor to radial magnetic field so that magnetic line of force direction and the direction of motion are vertical, and electricity is negative
Lotus and magnetic loading decoupling, primary structure axial direction can do m unit and constitute multiple-unit motor, it is preferable that the value of m is 6
Multiple, such structure design can offset interference collateral motion normal force, reduce radial flux linear motor side end
Power.Permanent magnet is placed on primary structure, and permanent magnet radial magnetizing, is improved the pushing force density of linear motor, is reduced secondary
The quality of structure.
Embodiment 4
On the basis of embodiment 1, the width of the first concave part 112A of the present embodiment in primary structure axial direction
Ratio range with width of the convex teeth portion 111 on primary structure axial direction is：0.8-1.2.
Wherein, the width of convex teeth portion 111 can be 4 millimeters.
By the way that the convex teeth portion and concave part of special parameter is arranged, sine degree of back electromotive force is improved so that per unit motor
Between decouple, detent force can be offset by the reason of multiple-unit motor.
Embodiment 5
As shown in Figure 6 to 8, on the basis of embodiment 1, the convex teeth portion 111 of the present embodiment is folded by multiple nine
Piece 17 is spaced in the axial direction and is staggeredly formed by stacking；Multiple 9th laminations 17 are silicon steel sheet.
In above structure, the second concave part 112B be overlapped mutually in the axial direction by multiple 7th laminations 15 and
At；The first concave part 112A is overlapped mutually in the axial direction by multiple 8th laminations 16；The convex teeth portion 111 by
Multiple 9th laminations 17 are overlapped mutually in the axial direction；Multiple 7th laminations 15, multiple 8th laminations 16
And multiple 9th laminations 17 are silicon steel sheet.
So that primary lamination manufacture processing is simple, it is convenient for the installation of primary structure, improves the production effect of linear motor
Rate.
Embodiment 6
As shown in figure 9, on the basis of embodiment 1 to 5 any embodiment of embodiment, the described 13rd of the present embodiment is convex
The one end of pole structure 11 far from the secondary structure 2 is an integral structure.
Advantageous effect using above-mentioned further scheme is：By the way that one end setting of secondary structure is an integral structure,
So that permanent magnet does not run through salient-pole structure directly, motor works, and fault-tolerance is strong, and operational reliability is high, and force density is high.
Embodiment 7
As shown in Figure 16 to Figure 18, on the basis of embodiment 1 to 5 any embodiment of embodiment, the present embodiment it is described
Secondary structure includes：Multiple 14th salient-pole structures 21, the 14th salient-pole structure 21 is by multiple 5th laminations 31 and more
A 6th lamination 32 is spaced in the axial direction and is staggeredly formed by stacking, each 5th lamination 31 and each described
6th lamination 32 is circular ring shape, and the side of each 5th lamination 31 is provided with symmetrical three pairs of flanges two-by-two；Multiple institutes
It states the 14th salient-pole structure 21 and is folded with third concave part 25 in the axial direction, the 4th permanent magnet 12B is plugged on described
In third concave part 25.
Can be for the stacked system of above-mentioned lamination：Ten the 5th laminations are sequentially overlapped and are connected to first group of lamination
And ten the 6th laminations are sequentially overlapped and are connected to second group of lamination, look on the axial direction of first group of lamination, the
All sides in one group of lamination overlap；It looks on the axial direction of second group of lamination, the flange phase in second group of lamination
Mutually overlap；First group of lamination and second group of lamination are sequentially overlapped connection, looked in the axial direction, first group of lamination and
There are six the flanges of spaced set for the side tool for the combination that two groups of laminations are formed.
Wherein, the quantity with the quantity of the 13rd salient-pole structure 11 of the 14th salient-pole structure 21 can be identical.14th is convex
Pole structure 21 is overlapped mutually by lamination, and it is hollow cylinder shape shape that secondary pole structure 2 does not have armature winding, secondary pole structure above
Shape, it is corresponding with 6 the 13rd salient-pole structures 11 of first pole structure, six groups pole teeth, secondary pole knot are provided on secondary structure 2
Structure 2 only has simple tooth to be formed with yoke.Secondary pole pole span can be according to different application scenarios, and it is primary pole span to be set as secondary pole span
0.9-1.8 times, and 0.3-0.7 times that the secondary facewidth is secondary pole span.
It should be noted that looking along the axial direction of secondary structure 2 at the both ends of secondary structure 2, the secondary tooth is secondary
Quantity on 2 circumferencial direction of level structure can be 6 multiple, for example, 6 secondary teeth or 18 secondary teeth.It can offset dry
Disturb the normal force of collateral motion.Correspondingly, the 13rd salient-pole structure 11 on single-phase 14 circumferencial direction of unit primary components
Quantity is identical as the secondary quantity of tooth.That is, look along the axial direction of secondary structure 2 at the both ends of secondary structure 2, the secondary tooth
When the quantity on 2 circumferencial direction of secondary structure is 6, correspondingly, the on single-phase 14 circumferencial direction of unit primary components the tenth
The quantity of three salient-pole structures 11 can be 6.
The interlaced bulge-structure for forming secondary structure of above-mentioned flange so that secondary lamination manufacture processing is simple,
Convenient for the installation of secondary structure, the production efficiency of linear motor, secondary structure operational reliability height, secondary structure quality are improved
Gently, dynamic response is good, can improve the power energy quality of generator；Compared with linear motor in the prior art, secondary structure
It is upper not have winding, there is the permanent magnet of fraction so that cylindrical linear motor light weight of the invention, control on secondary structure
Respond it is sensitive, be convenient for fault-tolerant operation and control.Permanent magnet is placed on primary structure, and permanent magnet radial magnetizing, is improved straight
The pushing force density of line motor reduces the quality of secondary structure.
Embodiment 8
On the basis of embodiment 1 to 5 any embodiment of embodiment, the secondary structure pole span of the present embodiment with it is described
The ratio range of primary structure pole span is：0.9-1.8, the secondary facewidth and the ratio range of the secondary pole span are：0.3-
0.7。
Cross the parameter of setting secondary structure pole span and the primary structure pole span so that linear motor sine degree of back electromotive force
Height is decoupled per between unit motor, and detent force can be offset by the reason of multiple-unit motor.
Embodiment 9
On the basis of embodiment 1 to 5 any embodiment of embodiment, the third permanent magnet 12A of the present embodiment and
Four permanent magnet 12B can be made of NdFeB material.
Improve the reliability of permanent magnet.
Embodiment 10
On the basis of embodiment 1 to 9 any embodiment of embodiment, the present embodiment is to cylindrical linear motor of the invention
Magnetic loop is described in detail.
Figure 19 is the single-phase two unit sections magnetic loop schematic diagram of the motor, by taking this schematic diagram as an example, remaining each single-phase unit
And symmetric part is identical as structure shown in this figure.Dotted line in figure represents the path of magnetic flux.The magnetic line of force is from primary structure
The poles permanent magnet N in portion and lower part salient pole void slot.Into the yoke portion of primary structure, the convex of centre is entered by primary iron core later
Pole, the rear permanent magnet S pole for reaching the empty slot in middle part, then the poles permanent magnet N out of middle part void slot enter air gap, entered by air gap
Secondary reaches secondary permanent magnet S pole, then sends out the magnetic line of force to first to stator upper and lower part respectively from the secondary poles permanent magnet N
Permanent magnet S pole above and below grade in slot, constitutes the complete magnetic figure of motor.The permanent magnet of the motor is placed on the first pole of remains stationary
On iron core, the movement of dimension pole structure 2 is effectively avoided to cause 2 temperature of secondary structure excessively high and lead to going out for permanent magnet magnet loss phenomenon
It is existing.Permanent magnet and winding are all placed on the static side of primary structure and so that secondary structure is simple in structure, cost reduction, in addition, secondary
Level structure is placed in seawater, corrosion will not be generated to permanent magnet winding, easy to maintain, reliability is high.It is secondary that interference can be offset
The normal force of movement.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of cylindrical linear motor, which is characterized in that including：Primary structure (1), secondary structure (2), multigroup 13rd salient pole
Structure (11), multiple third permanent magnets (12A), multiple 4th permanent magnets (12B), multiple first windings (13A) and multiple
Two windings (13B), the primary structure (1) and the secondary structure (2) are cylindrical shape, primary structure (1) ring set
Outside in the secondary structure (2), the secondary structure (2) are coaxially disposed with the primary structure (1), and multiple described four
Permanent magnet (12B) is mounted on the outer wall of the secondary structure (2)；
One end of 13rd salient-pole structure (11) is mounted on the inner wall of the primary structure (1), and multiple thirds are forever
Magnet (12A), multiple first windings (13A) and multiple second windings (13B) are installed in multiple 13rd salient pole knots
On structure (11)；
The one end of 13rd salient-pole structure (11) far from the primary structure (1) is provided with multiple convex teeth portions (111), adjacent
First concave part (112A) is formed between two convex teeth portions, between two neighboring 13rd salient-pole structure (11)
Second concave part (112B) is formed, the third permanent magnet (12A) is overlapped in first concave part (112A), described
One end end face of third permanent magnet (12A) is concordant with the other end face of the 13rd salient-pole structure (11), and each described the
Setting is there are one the third permanent magnet (12A) in one concave part (112A), between the two neighboring third permanent magnet (12A)
There are one the convex teeth portions (111) for setting；First winding (13A) is coiled in positioned at the 13rd salient-pole structure (11) two
On the convex teeth portion side wall of side, the 13rd salient-pole structure (11) is arranged in the middle part of first winding (13A) positioned at described
Part between third permanent magnet (12A) and the primary structure (1), be arranged in the middle part of first winding (13A) there are three
Convex teeth portion (111) and two the first concave parts (112A)；
Second winding is set in two neighboring 13rd salient-pole structure, on two convex teeth portions of neighbouring setting.
2. cylindrical linear motor according to claim 1, which is characterized in that the primary structure (1) includes：It is multiple single-phase
One unit primary components (14),；
The single-phase unit primary components (14) are that open circles are cyclic annular, the internal ring wall of the single-phase unit primary components (14)
On be provided with multigroup 13rd salient-pole structure (11), multigroup 13rd salient-pole structure (11) is in a single-phase unit
Primary components (14) inner wall along the circumferential direction goes up spaced set.
3. cylindrical linear motor according to claim 1, which is characterized in that multiple third permanent magnets (12A) and
Multiple 4th permanent magnets (12B) are radially magnetized.
4. cylindrical linear motor according to claim 1, which is characterized in that first concave part (112A) is tied in primary
The ratio range of width of the width with the convex teeth portion (111) on primary structure axial direction in structure axial direction is：0.8-
1.2。
5. cylindrical linear motor according to claim 1, which is characterized in that the convex teeth portion (111) is folded by multiple nine
Piece (17) is spaced in the axial direction and is staggeredly formed by stacking；Multiple 9th laminations (17) are silicon steel sheet.
6. according to any cylindrical linear motors of claim 1-5, which is characterized in that the 13rd salient-pole structure (11)
One end far from the secondary structure (2) is an integral structure.
7. according to any cylindrical linear motors of claim 1-5, which is characterized in that the secondary structure includes：It is multiple
14th salient-pole structure (21), the 14th salient-pole structure (21) is by multiple 5th laminations (31) and multiple 6th laminations
(32) spaced in the axial direction and staggeredly be formed by stacking,
Each 5th lamination (31) and each 6th lamination (32) are circular ring shape, each 5th lamination
(31) side is provided with symmetrical three pairs of flanges two-by-two；
Multiple 14th salient-pole structures (21) are folded with third concave part (25), the 4th permanent magnet in the axial direction
(12B) is plugged in the third concave part (25).
8. according to any cylindrical linear motors of claim 1-5, which is characterized in that secondary structure (2) pole span with
The ratio range of primary structure (1) pole span is：0.9-1.8, the ratio range of the secondary facewidth and the secondary pole span
For：0.3-0.7.
9. according to any cylindrical linear motors of claim 1-5, which is characterized in that the third permanent magnet (12A) and
4th permanent magnet (12B) is made of NdFeB material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214400.0A CN108377083A (en) | 2018-03-15 | 2018-03-15 | A kind of cylindrical linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214400.0A CN108377083A (en) | 2018-03-15 | 2018-03-15 | A kind of cylindrical linear motor |
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Family
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| CN109088529A (en) * | 2018-08-17 | 2018-12-25 | 浙江海洋大学 | Novel multi-face barrel-type permanent magnet straight line wave power energy generator |
| CN114729485A (en) * | 2019-11-22 | 2022-07-08 | 罗伯特·加博·蓬格拉斯 | Tufting system |
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Application publication date: 20180807 |