CN108494220A - A kind of cylindrical linear motor - Google Patents
A kind of cylindrical linear motor Download PDFInfo
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- CN108494220A CN108494220A CN201810214409.1A CN201810214409A CN108494220A CN 108494220 A CN108494220 A CN 108494220A CN 201810214409 A CN201810214409 A CN 201810214409A CN 108494220 A CN108494220 A CN 108494220A
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- pole
- salient
- linear motor
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- lamination
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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
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
- H02K41/033—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type with armature and magnets on one member, the other member being a flux distributor
-
- 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
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/06—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving flux distributors, and both coil systems and magnets stationary
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
Abstract
The present invention relates to a kind of cylindrical linear motor, which includes：Primary structure, secondary structure, multigroup first salient-pole structure, multiple permanent magnets and multiple windings, the primary structure and the secondary structure are cylindrical shape, the primary structure ring set is in the outside of the secondary structure, the secondary structure is coaxially disposed with the primary structure, and multiple permanent magnets are installed on the inner wall of the primary structure；One end of first salient-pole structure is mounted on the inner wall of the primary structure, and multiple permanent magnets and the winding are installed on multiple first salient-pole structures.So that secondary structure is simple in structure by the way that permanent magnet and winding are all placed on the static side of primary structure, cost reduction will not generate permanent magnet winding corrosion, easy to maintain, reliability is high in addition, secondary structure is placed in seawater.
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 be usually separately positioned on linear electric motor primary or
It is not to be placed on motor side simultaneously in person's secondary；In linear motor motion process, secondary can drive permanent magnet and winding
It moves back and forth, 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, the cylindrical linear motor
Including：Primary structure, secondary structure, multigroup first salient-pole structure, multiple permanent magnets and multiple windings, the primary structure with
And the secondary structure is cylindrical shape, the primary structure ring set in the outside of the secondary structure, the secondary structure with
The primary structure coaxial arrangement, multiple permanent magnets are installed on the inner wall of the primary structure；First salient pole
One end of structure is mounted on the inner wall of the primary structure, and multiple permanent magnets and the winding are installed in multiple institutes
It states on the first salient-pole structure；The described one end of first salient-pole structure far from the primary structure is provided with multiple convex teeth portions, adjacent
It is formed between two convex teeth portions there are one concave part, the permanent magnet is plugged in the concave part, and the winding is coiled in phase
On the side wall of adjacent convex teeth portion, it is arranged in the middle part of the winding there are two convex teeth portion and a permanent magnet, adjacent two
There are two convex teeth portion, three concave parts and a permanent magnets for setting between the winding.
The beneficial effects of the invention are as follows：By the way that the winding of linear motor and permanent magnet to be arranged to the primary in remains stationary
In structure, prevent from causing the appearance for leading to permanent magnet magnet loss phenomenon due to temperature is excessively high because of collateral motion.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.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the primary structure includes：Multiple single-phase primary components lead between multiple single-phase primary components
Un-conducted magnetic material is crossed to connect in the axial direction；The single-phase primary components are that open circles are cyclic annular, the single-phase primary components
Multigroup first salient-pole structure is provided on inner wall, multigroup first salient-pole structure is on the single-phase primary components inner wall edge
Spaced set on circumferencial direction.
Advantageous effect using above-mentioned further scheme is：It is spliced to form primary structure by multiple single-phase primary components,
On the one hand, increase the expulsion force that primary structure generates secondary structure, improve the power performance of linear motor；Make linear motor
The length of secondary structure can be adjusted according to actual needs, to expand or reduce the stroke of linear motor；On the other hand, often
It is decoupled between phase motor, the reason of detent force can pass through polyphase machine offsets, and is convenient for the maintenance and assembling of primary structure.
Further, multiple permanent magnets magnetize in an axial direction.
Advantageous effect using above-mentioned further scheme is：By setting the magnetic field of linear motor to transverse magnetic field, make
It obtains magnetic line of force direction and the direction of motion is vertical, electric load and magnetic loading decoupling, axial direction can do m unit and constitute multiphase electricity
Machine reduces radial flux linear motor side end power.Permanent magnet is placed on primary structure, and permanent magnet axial charging, is improved
The pushing force density of linear motor reduces the quality of secondary structure.
Further, width of the concave part in the primary structure axial direction and the convex teeth portion be in the axial direction
The ratio range of width be：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 phase motor, the reason of detent force can pass through polyphase machine offsets.
Further, the convex teeth portion is overlapped mutually in the axial direction by multiple second laminations；Multiple institutes
It is silicon steel sheet to state second lamination.
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 described one end of first 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：Second salient-pole structure, second salient-pole structure is by multiple third laminations
And multiple 4th laminations are spaced in the axial direction and are staggeredly formed by stacking, each third lamination and each institute
It is circular ring shape to state the 4th lamination, and the side of each third lamination is symmetrically arranged with a pair of flanges, and each described 4th is folded
The side of piece is provided with symmetrical two pairs of flanges two-by-two.
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, on secondary structure do not have permanent magnet and winding so that cylindrical linear motor quality of the invention
Gently, control response is sensitive, is convenient for fault-tolerant operation and control.Permanent magnet is placed on primary structure, and permanent magnet axial charging, is carried
The high pushing force density of linear motor, reduces the quality of secondary structure.
Further, the secondary structure includes：Third salient-pole structure, the third salient-pole structure is by multiple 5th laminations
And multiple 6th laminations are spaced in the axial direction and are staggeredly formed by stacking, each 5th lamination and each institute
It is circular ring shape to state the 6th lamination, and the side of each 5th lamination is provided with symmetrical three pairs of flanges two-by-two.
Advantageous effect using above-mentioned further scheme is：Replaceable side as above-mentioned third lamination and the 4th lamination
Case forms the salient-pole structure of secondary structure by being superimposed multiple 5th laminations and multiple 6th laminations.
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 per between phase motor, detent force can pass through the original of polyphase machine
Because offsetting.
Further, the permanent magnet is 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.
Drawing reference numeral explanation：
1- primary structures；The first salient-pole structures of 11-；111- convex teeth portions；112- concave parts；12- permanent magnets；13- windings；
The single-phase primary components of 14-；The first laminations of 15-；16- second laminations；2- secondary structures；The second salient-pole structures of 21-；22- thirds are folded
Piece；The 4th laminations of 23-；3- third salient-pole structures；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 17, 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.
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 first salient-pole structure 11, multiple permanent magnets 12 and multiple windings 13, the primary structure 1 and described
Secondary structure 2 is cylindrical shape, and 1 ring set of the primary structure is in the outside of the secondary structure 2, the secondary structure 2 and institute
The coaxial arrangement of primary structure 1 is stated, multiple permanent magnets 12 and multiple windings 13 are installed in the primary structure 1
On inner wall；One end of first salient-pole structure 11 be mounted on the primary structure 1 inner wall on, multiple permanent magnets 12 with
And the winding 13 is installed on multiple first salient-pole structures 11；First salient-pole structure 11 is far from the primary knot
One end of structure is provided with multiple convex teeth portions 111, forms that there are one concave part 112, the convex teeth portions between two neighboring convex teeth portion
111 are plugged on 112 spaced setting of the concave part, the permanent magnet 12 in the concave part 112, two neighboring described
There are two convex teeth portion 111 and a concave parts 112 for setting between permanent magnet 12；And at the both ends of first salient-pole structure 11
It is convex teeth portion 111, the winding 13 is coiled on the side wall in adjacent tooth portion 111, and the middle part of the winding 13 is arranged with two
A convex teeth portion 111 and a permanent magnet 12, between adjacent two windings 13 setting there are two convex teeth portion 111,
Three concave parts 112 and a permanent magnet 12.
Wherein, the present invention has preferably selected three single-phase primary components, has preferably selected 18 the first salient pole knots
Every six one group of the first salient-pole structure of structure 11,18 11 is separately mounted on three single-phase primary components；Preferably select
54 permanent magnets 12.
In practical applications, it is not limited to that 6 the first salient-pole structures 11 are arranged on the inner wall of each single-phase primary components, first
The quantity of salient-pole structure 11 can be 6 multiple, for example, the quantity of the first salient-pole structure 11 can be 6,12 or 18 etc..Energy
Enough normal force for offsetting interference collateral motion.
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 first salient-pole structure 11 can be the iron core of linear motor, and convex teeth portion 111 can be linear motor
The tooth of iron core, concave part 112 can be the slot of linear motor iron core.The first pole structure 1 of linear motor and time pole structure 2 are simultaneously endless
There is air gap in Full connected, the salient pole of pole structure 1 at the beginning of each section is with time salient pole of pole structure 2 apart from equal, air gap thickness between the two
Degree is also identical.Specifically, primary structure 1 is hollow cavity, two independent axis can be respectively set at the both ends of secondary structure 2
Bearing is held, secondary structure is suspended in the hollow cavity of primary structure 1 by bearing spider, for preventing linear motor being moved through
Because friction generates resistance and fever in journey, so that linear motor can work normally.
Fig. 9 is the salient-pole structure of first pole, is made of convex teeth portion 111, permanent magnet 12 and-concave part 112.Every group of first salient pole
It is provided with concave part 112 in structure 11, shares 5 concave parts 112.Three pieces of permanent magnets 12 are placed on per an alternate concave part 112
In slot, permanent magnet 12 uses NdFeB material, to make the flux density in air gap close to sine wave, the side of magnetizing of three permanent magnets 12
It to not exactly the same, but all magnetizes in an axial direction, the magnetizing direction schematic diagram of permanent magnet 12 is as shown in Figure 10.Slot without permanent magnet 12
It is inside placed with winding 13, the winding current direction wound on the salient pole of each row in an axial direction is consistent, but top winding is in, lower part
Winding in current direction on the contrary, specific current direction is as shown in figure 11.
As shown in figure 11, the arrow in figure represents the flow direction of electric current in winding；First salient-pole structure of the middle and upper parts Fig. 5
The winding corresponding diagram of first salient-pole structure 11 at middle part in UPPER (height) 1 and UPPER2, Fig. 5 in 11 winding corresponding diagram 11
In 11 M I DDLE (in) in the winding corresponding diagram 11 of the first salient-pole structure 11 of the middle and lower parts 1 and M I DDLE2, Fig. 5
LOWER (low) 1 and LOWER2.Wherein, the electric current stream of the winding UPPER (height) 1 and UPPER2 of first salient-pole structure 11 on top
Dynamic direction is consistent, the winding MI DDLE of first salient-pole structure 11 at middle part (in) direction of current flow one of 1 and MI DDLE2
It causes, the LOWER (low) 1 of the winding of the first salient-pole structure 11 of lower part is consistent with the direction of current flow of LOWER2；The of middle part
One salient-pole structure 11 winding MI DDLE (in) direction of current flow of 1 and MI DDLE2 and the first salient-pole structure 11 of lower part
Winding LOWER (low) 1 it is identical with the direction of current flow of LOWER2；The winding UPPER of first salient-pole structure 11 on top
First salient-pole structure 11 of the direction of current flow and middle part of (height) 1 and UPPER2 winding MI DDLE (in) 1 and MI DDLE2
Direction of current flow and lower part the first salient-pole structure 11 winding LOWER (low) 1 and LOWER2 electric current flowing side
To opposite.
By being arranged the winding 13 of linear motor and permanent magnet 12 on the primary structure 1 of remains stationary, prevent because
Collateral motion causes temperature excessively high and leads to the appearance of permanent magnet magnet loss phenomenon.It is static that permanent magnet and winding are all placed on primary structure
Side so that secondary structure is simple in structure, cost reduction will not be to permanent magnet winding in addition, secondary structure is placed in seawater
Corrosion is generated, easy to maintain, 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 of the present embodiment includes：It is multiple single-phase
Primary components 14 are connected by un-conducted magnetic material in the axial direction between multiple single-phase primary components 14；Wherein, it does not lead
Magnetic material plays the role of every magnetic and is fixedly connected to each single-phase primary components.The single-phase primary components 14 are open circles
Ring-type is provided with multigroup first salient-pole structure 11, multigroup first salient pole on the inner wall of the single-phase primary components 14
Structure 11 along the circumferential direction goes up spaced set in 14 inner wall of single-phase primary components.
During production application, which can change the number of phases of motor according to demand, at the same per phase motor it
Between be formed by connecting by un-conducted magnetic material, therefore the number of phases of real electrical machinery can be set as m, connecting non-magnetic body per phase motor can be with
For m-1.
The diagrammatic cross-section of the single-phase symmetrical structure of motor as shown in figure 4, the first pole sectional view of motor as shown in figure 5, by scheming
It can be seen that the main body of the single-phase just pole component of the motor is the silicon steel block of one piece of hollow cylinder, it is in the actual production process, single-phase first
Grade component is usually overlapped mutually by the platy structure of multiple open circles annular, it should be noted that multiple open circles annulars
Platy structure can be silicon steel sheet so that single-phase primary components can be with magnetic conduction, to for linear motor provide magnetic flux path.Circle
Column wall is six group of first salient-pole structure 11.Section as shown in the figure show to be three group of first salient-pole structure 11, in addition three groups and
It is symmetrical according to section.And just pole structure is formed by two kinds of silicon steel plate stackings as shown in Figure 6 and Figure 7.Three groups just pole modules according to
It is secondary to be connected by un-conducted magnetic material, the three-phase structure of cylindrical linear motor is formed, three-phase structure schematic diagram is as shown in Figure 8.
By being arranged the winding 13 of linear motor and permanent magnet 12 on the primary structure 1 of remains stationary, prevent because
The movement of secondary structure 2 causes temperature excessively high and leads to the appearance of 12 magnet loss phenomenon of permanent magnet.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.
It is compared with traditional transverse flux linear motor, permanent magnet 12 of the invention is placed on 1 side of primary structure, and axial
It magnetizes, improves the pushing force density of motor, alleviate the quality of secondary structure 2, and fabricate simple.With traditional round cartridge type
Linear motor is compared, and magnetic field of the invention is transverse magnetic field, and magnetic line of force direction and the direction of motion are vertical, electric load and magnetic loading solution
Coupling, axial direction can do m unit and constitute polyphase machine, be convenient for fault-tolerant operation and control.
It is spliced to form primary structure 1 by multiple single-phase primary components 14, on the one hand, increase primary structure to secondary structure
The expulsion force of generation improves the power performance of linear motor；Linear motor is allow to adjust secondary structure 1 according to actual needs
Length, to expand or reduce linear motor stroke；On the other hand, it is decoupled per between phase motor, detent force can lead to
The reason of crossing polyphase machine is offset, and the maintenance and assembling of primary structure 1 are convenient for.
Embodiment 3
As shown in Figure 10, on the basis of embodiment 1, multiple permanent magnets 12 of the present embodiment magnetize in an axial direction.
To make the flux density in air gap close to sine wave, the magnetizing direction of three permanent magnets 12 is not exactly the same, but all edges
Axial charging, 12 magnetizing direction schematic diagram of permanent magnet is as shown in Figure 10, and the left side of the permanent magnet 12 of the leftmost side can be N in figure
Grade, the right side of the permanent magnet 12 of the leftmost side can be S grades in figure, and the left side of intermediate permanent magnet 12 can be S grades, in figure in figure
The right side of intermediate permanent magnet 12 can be N grades, and the left side of the permanent magnet 12 of the rightmost side can be N grades in figure, the rightmost side in figure
Permanent magnet 12 right side can be S grades.
By setting the magnetic field of linear motor to transverse 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, axial direction can do m unit and constitute polyphase machine, it is preferable that the multiple that the value of m is 6, in this way
Structure design can offset interference secondary structure 2 move normal force, reduce radial flux linear motor side end power.Its
In, m is a numerical value, and the numerical value of m can determine according to actual needs.Permanent magnet 12 is placed on primary structure 1, and permanent magnet
Axial charging improves the pushing force density of linear motor, reduces the quality of secondary structure 2.
Embodiment 4
On the basis of embodiment 1, the width of the concave part 112 of the present embodiment in the primary structure axial direction with
The ratio range of the width of the convex teeth portion 111 in the 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 111 and concave part 112 of special parameter is arranged, sine degree of back electromotive force is improved so that per phase
It is decoupled between motor, the reason of detent force can pass through polyphase machine offsets.
Embodiment 5
As shown in Figure 6 and Figure 7, on the basis of embodiment 1, the convex teeth portion 111 of the present embodiment is by multiple described
One lamination 15 is overlapped mutually in the axial direction；The concave part 112 by multiple second laminations 16 in the axial direction
On be overlapped mutually；Multiple first laminations 15 and multiple second laminations 16 are silicon steel sheet.
In above structure, the first lamination 15 and second lamination 16 are arc-shaped flaky structure, and the height of second lamination 16 is small
In the height of the first lamination 15.
Passing through the setting of above structure so that primary lamination manufacture processing is simple, is convenient for the installation of primary structure, and
And, to adjust the thickness of convex teeth portion, linear motor can be improved according to actual needs by increasing or reducing the quantity of lamination
Production efficiency.
Embodiment 6
As shown in figure 9, on the basis of embodiment 1 to 5 any embodiment of embodiment, first salient pole of the present embodiment
The one end of structure 11 far from the secondary structure 2 is an integral structure.
By the way that one end setting of secondary structure 2 is an integral structure so that permanent magnet 12 does not run through the first salient pole directly
Structure 11, so that motor work fault-tolerance is strong, operational reliability is high, and force density is high.In addition, by by secondary structure 2
One end setting is an integral structure so that permanent magnet 12 can be firmly secured in the first salient-pole structure 11, improve permanent magnet
12 stability.
Embodiment 7
As shown in Figure 13 and Figure 14, on the basis of embodiment 1 to 5 any embodiment of embodiment, the present embodiment it is described
Secondary structure includes：Second salient-pole structure 21, second salient-pole structure 21 are folded by multiple third laminations 22 and the multiple 4th
Piece 23 is overlapped mutually in the axial direction, and each third lamination 22 and each 4th lamination 23 are annulus
The side of shape, each third lamination 22 is symmetrically arranged with a pair of flanges, and the side of each 4th lamination 23 is provided with
Symmetrical two pairs of flanges two-by-two.
Can be for the stacked system of above-mentioned lamination：Ten third laminations are sequentially overlapped and are connected to first group and fold
Piece, ten the 4th laminations are sequentially overlapped and are connected to second group of lamination and ten third laminations are sequentially overlapped and are connected to
Third group lamination, looks on the axial direction of first group of lamination, and the flange in first group of lamination overlaps；It is folded at second group
It looks on the axial direction of piece, the flange in second group of lamination overlaps；It looks on the axial direction of third group lamination, the
Flange in three groups of laminations overlaps；First group of lamination, second group of lamination and third group lamination are sequentially overlapped connection, and
And the interlaced setting of flange of the flange and second group of lamination of first group of lamination, flange and the third group lamination of second group of lamination
The interlaced setting of flange, look in the axial direction, the side tool for the combination that first group of lamination and second group of lamination are formed
There are six the flange of spaced set, there are six equidistantly set the side tool for the combination that second group of lamination and third group lamination are formed
The flange set.
Wherein, the quantity of the second salient-pole structure 21 can be identical with the quantity of the first salient-pole structure 11.Second salient-pole structure
210 are formed by stacking by lamination, and for secondary pole structure 2 above both without permanent magnet or without armature winding, secondary pole structure is hollow cylinder
Type shape, it is corresponding with 6 the first salient-pole structures 11 of first pole structure, six groups pole teeth, secondary pole 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 to be set as secondary pole span
Away from 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 quantity of the first salient-pole structure 11 on 14 circumferencial direction of single-phase primary components with time
The quantity of grade tooth is identical.That is, looking along the axial direction of secondary structure 2 at the both ends of secondary structure 2, the secondary tooth is tied in secondary
When quantity on 2 circumferencial direction of structure is 6, correspondingly, the number of the first salient-pole structure 11 on 14 circumferencial direction of single-phase primary components
Amount 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 2, the production efficiency of linear motor, 2 operational reliability of secondary structure height, 2 matter of secondary structure are improved
Amount is light, dynamic response is good, can improve the power energy quality of generator；Compared with linear motor in the prior art, secondary knot
Do not have permanent magnet 12 and winding 13 on structure 2 so that cylindrical linear motor light weight of the invention, control response is sensitive, just
In fault-tolerant operation and control.Permanent magnet 12 is placed on primary structure 2, and 12 axial charging of permanent magnet, improves linear motor
Pushing force density, reduce the quality of secondary structure 2.
Embodiment 8
As shown in Figure 15 and Figure 16, on the basis of embodiment 1 to 5 any embodiment of embodiment, the present embodiment is as real
Apply the alternative of example 7.
The secondary structure 2 can also include：Third salient-pole structure 3, the third salient-pole structure 3 is by multiple 5th laminations
31 and multiple 6th laminations 32 be overlapped mutually in the axial direction, each 5th lamination 31 and each described the
Six laminations 32 are circular ring shape, and the side of each 5th lamination 31 is provided with symmetrical three pairs of flanges two-by-two.
As the alternative of 22 and the 4th lamination 23 of above-mentioned third lamination, by be superimposed multiple 5th laminations 31 with
And multiple 6th laminations 32 form the second salient-pole structure 21 of secondary structure 2.
Embodiment 9
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。
By the parameter that 2 pole span of secondary structure and 2 pole span of the primary structure is arranged so that linear motor back-emf is sinusoidal
The reason of degree is high, is decoupled per between phase motor, and detent force can pass through polyphase machine is offset.
Embodiment 10
On the basis of embodiment 1 to 5 any embodiment of embodiment, the permanent magnet 12 of the present embodiment is by neodymium iron boron material
Material is made.Improve the reliability of permanent magnet.
Embodiment 11
On the basis of embodiment 1 to 10 any embodiment of embodiment, cylindrical linear motor of the present embodiment to the present invention
Magnetic loop be described in detail.
Figure 17 is the single-phase section magnetic loop schematic diagram of the motor, and by taking this schematic diagram as an example, remaining each phase and symmetric part are equal
It is identical as structure shown in this figure.Dotted line in figure represents the path of magnetic flux.Magnetic loop originates in just pole upper and lower part permanent magnet
12, and because of 12 parallel magnetization of permanent magnet and adjacent 12 polarity of permanent magnet on the contrary, the poles N of two adjacent permanent magnets 12 on top
The magnetic flux of generation under pole teeth directional at the beginning of two between two permanent magnets by assembling, while the magnetic that the poles N of lower permanent magnet 12 generate
Assemble on the teeth directional of pole at the beginning of two between two excessively adjacent permanent magnets 12 of promoting menstruation.At this time due to the magnetic flux size phase on top, lower part
Directions are waited on the contrary, magnetic flux is forced to move towards to change, after being then passed through upper and lower part air gap, by secondary pole tooth, secondary pole yoke, are then passed through middle part
Air gap is entered the poles S of middle part permanent magnet by pole tooth at the beginning of middle part, then enters first pole iron core from the poles N of middle part permanent magnet 12, finally
The poles S for convergeing to the upper and lower part permanent magnet 12 for beginning to send out the magnetic line of force, so as to form the main flux circuit of the motor.The electricity
The permanent magnet 12 of machine is placed on the first pole iron core of remains stationary, and the movement of dimension pole structure 2 is effectively avoided to cause secondary structure 2 warm
Spend appearance that is high and leading to 12 magnet loss phenomenon of permanent magnet.Permanent magnet and winding are all placed on the static side of primary structure and make time
Level structure is simple in structure, cost reduction, in addition, secondary structure is placed in seawater, will not generate corrosion to permanent magnet winding, safeguard
Convenient, reliability is high.The normal force of interference collateral motion can be offset.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of cylindrical linear motor, which is characterized in that the cylindrical linear motor includes：Primary structure (1), secondary structure (2),
Multigroup first salient-pole structure (11), multiple permanent magnets (12) and multiple windings (13), the primary structure (1) and described time
Level structure (2) is cylindrical shape, and primary structure (1) ring set is in the outside of the secondary structure 2, the secondary structure (2)
It is coaxially disposed with the primary structure (1),
One end of first salient-pole structure (11) is mounted on the inner wall of the primary structure (1), multiple permanent magnets
(12) and the winding (13) is installed on multiple first salient-pole structures (11)；
The one end of first salient-pole structure (11) far from the primary structure is provided with multiple convex teeth portions (111), two neighboring
Formed between convex teeth portion there are one concave part (112), the permanent magnet (12) is plugged in the concave part (112), it is described around
Group (13) is coiled on the side wall of adjacent tooth portion (111), be arranged in the middle part of the winding (13) there are two convex teeth portion (111) with
And a permanent magnet (12), there are two convex teeth portion (111), three grooves for setting between adjacent two windings (13)
Portion (112) and a permanent magnet (12).
2. cylindrical linear motor according to claim 1, which is characterized in that the primary structure (1) includes：It is multiple single-phase
Primary components (14) are connected by un-conducted magnetic material in the axial direction between multiple single-phase primary components (14)；
The single-phase primary components (14) are that open circles are cyclic annular, are provided on the internal ring wall of the single-phase primary components (14) multigroup
First salient-pole structure (11), multigroup first salient-pole structure (11) single-phase primary components (14) inner wall circumferentially
Spaced set on direction.
3. cylindrical linear motor according to claim 1, which is characterized in that multiple permanent magnets (12) are filled in an axial direction
Magnetic.
4. cylindrical linear motor according to claim 1, which is characterized in that the concave part (112) is in the primary knot
The ratio range of width of the width with the convex teeth portion (111) in the 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 second
Piece (16) is overlapped mutually in the axial direction；Multiple second laminations (16) are silicon steel sheet.
6. according to any cylindrical linear motors of claim 1-5, which is characterized in that first salient-pole structure (11) is remote
One end 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 (2) includes：The
Two salient-pole structures (21), second salient-pole structure (21) is by multiple third laminations (22) and multiple 4th laminations (23) in axis
To on direction it is spaced and staggeredly be formed by stacking,
Each third lamination (22) and each 4th lamination (23) are circular ring shape, each third lamination
(22) side is symmetrically arranged with a pair of flanges, the side of each 4th lamination (23) be provided with two-by-two symmetrical two pairs it is convex
Edge.
8. according to any cylindrical linear motors of claim 1-5, which is characterized in that the secondary structure (2) includes：The
Three salient-pole structures (3), the third salient-pole structure (3) is by multiple 5th laminations (31) and multiple 6th laminations (32) in axial direction
On direction it is spaced 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.
9. 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.
10. according to any cylindrical linear motors of claim 1-5, which is characterized in that the permanent magnet (12) is by neodymium iron
Boron material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214409.1A CN108494220A (en) | 2018-03-15 | 2018-03-15 | A kind of cylindrical linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214409.1A CN108494220A (en) | 2018-03-15 | 2018-03-15 | A kind of cylindrical linear motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787448A (en) * | 2019-03-05 | 2019-05-21 | 西安电子科技大学 | A kind of primary permanent magnet linear motor actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051148A (en) * | 2012-12-13 | 2013-04-17 | 东南大学 | Modular primary permanent magnetic linear motor and motor module consisting of same |
| CN103441640A (en) * | 2013-08-29 | 2013-12-11 | 江苏大学 | Modularized fault-tolerant magnetic flow switching permanent magnet linear motor and control method thereof |
| CN105375716A (en) * | 2015-11-09 | 2016-03-02 | 中国矿业大学 | Position estimation method for electrical and mechanical conversion double-side switch magnetic resistance linear motor mover |
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2018
- 2018-03-15 CN CN201810214409.1A patent/CN108494220A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051148A (en) * | 2012-12-13 | 2013-04-17 | 东南大学 | Modular primary permanent magnetic linear motor and motor module consisting of same |
| CN103441640A (en) * | 2013-08-29 | 2013-12-11 | 江苏大学 | Modularized fault-tolerant magnetic flow switching permanent magnet linear motor and control method thereof |
| CN105375716A (en) * | 2015-11-09 | 2016-03-02 | 中国矿业大学 | Position estimation method for electrical and mechanical conversion double-side switch magnetic resistance linear motor mover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109787448A (en) * | 2019-03-05 | 2019-05-21 | 西安电子科技大学 | A kind of primary permanent magnet linear motor actuator |
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