KR20160139896A - magnetic flux concentration type linear generator comprising composite material - Google Patents

magnetic flux concentration type linear generator comprising composite material Download PDF

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Publication number
KR20160139896A
KR20160139896A KR1020150075785A KR20150075785A KR20160139896A KR 20160139896 A KR20160139896 A KR 20160139896A KR 1020150075785 A KR1020150075785 A KR 1020150075785A KR 20150075785 A KR20150075785 A KR 20150075785A KR 20160139896 A KR20160139896 A KR 20160139896A
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South Korea
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permanent magnets
magnetic
unit
ring
poles
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KR1020150075785A
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Korean (ko)
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KR101702026B1 (en
Inventor
김헌우
강석순
김병국
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재단법인 중소조선연구원
김병국
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Priority to KR1020150075785A priority Critical patent/KR101702026B1/en
Publication of KR20160139896A publication Critical patent/KR20160139896A/en
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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
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/025—Asynchronous motors

Abstract

Provided is a magnetic flux concentration type linear generating device comprising: a bobbin unit; a stator unit; a mover unit; and a composite material to improve generation efficiency by enhancing a magnetic field applied to a mechanism coil. The bobbin unit includes a multistage groove unit along outer circumference. The stator unit is formed by the mechanism coil wound along the inside of each of groove units; and includes a plurality of coil groups which are divided by an insulating unit formed between each of groove units. The mover unit penetrates a hollow formed in a center unit of the bobbin unit, includes a mounting space inside, and is relatively moved with the stator unit with external force. The composite material is mounted in the mounting space; and includes a plurality of ring type first permanent magnets by magnetizing an N pole and an S pole along a length direction of the hollow in order that the same poles are faced to each other for repulsion of a magnetic line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a magnetic flux concentrating type linear generator comprising a composite material,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic flux concentrating type linear generator including a composite material, and more particularly, to a magnetic flux concentrating type linear generator including a composite material for enhancing power generation efficiency by enhancing a magnetic field applied to the electromotive coil.

Generally, the type of power generation using seawater is ocean power generation using water flow moving in a certain direction, tidal power generation using difference of tidal water tide, and wave power generation using short-term lifting motion of sea surface by wave or vane.

Here, wave power generation means that periodical up and down movement of sea level caused by wave is converted into mechanical kinetic energy through an energy conversion device and then converted into electric energy. At this time, a linear generator is used to convert the vertical reciprocating motion generated at the surface of the ocean into electric power.

1 is a diagram showing an example of a conventional linear generator.

1, the conventional linear generator 1 includes a stator section 4 fixed to the seabed and a mover section 3 provided inside the stator section 4, 3) can be moved up and down by the wave connected to the floating body 2 floating on the sea surface.

Here, the stator unit 4 is provided in a cylindrical shape having a hollow formed at a central portion thereof. The stator unit 4 can be moved up and down by inserting the moving unit 3 into the hollow, and the stator unit 4 has a mechanism coil Is wound.

The moving part 3 is provided with a permanent magnet therein so that a current may be generated in the electromotive coil as the direction of a magnetic field applied to the electromotive coil is changed when the electromagnet is vertically moved.

However, in the conventional linear generator 1, only the magnetic field generated radially outward of the movable portion 3 in the magnetic field generated in the permanent magnet of the movable portion 3 can be applied to the electromotive coil, There is a problem that the magnetic field generated in the radially inward direction and the kinetic energy thereof are wasted.

In addition, induction current may be generated in only part of the inner side of the electromotive coil adjacent to the permanent magnet, thereby lowering power generation efficiency.

Korean Patent No. 10-1508411

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a magnetic flux concentration type linear generator including a composite material having enhanced magnetic field strength to be applied to the induction coil.

According to an aspect of the present invention, there is provided a semiconductor device comprising: a bobbin portion having a plurality of recessed portions formed along an outer periphery thereof; and an insulating portion formed between the recessed portions, A stator section including a plurality of coil groups to be partitioned; A mover part disposed to penetrate through a hollow formed at a central portion of the bobbin part and having a mounting space therein and being relatively movable with respect to the stator part by an external force; And a plurality of ring-shaped first permanent magnets provided in the mounting space, the plurality of ring-shaped first permanent magnets being arranged such that N poles and S poles are magnetized along the longitudinal direction of the hollow and the same magnetic poles face each other for repulsion of magnetic lines of force A magnetic flux concentrating linear generator including a composite material is provided.

The base magnetic portion may further include a plurality of ring-shaped core blocks disposed between the first permanent magnets and the adjacent first permanent magnets and made of a soft magnetic material.

The support magnet portion includes a plurality of ring-shaped second permanent magnets magnetized with N poles and S poles along the radial direction of the hollow at the inner periphery of the base magnetic portion, It is preferable that the same magnetic poles as the magnetic poles repelled at the boundaries of the permanent magnets are arranged to face the respective boundaries.

In addition, it is preferable that each of the second permanent magnets is arranged so that the same magnetic pole as the magnetic pole of the adjacent first permanent magnet is opposed to the inner periphery of each of the ring-shaped core blocks.

The stator unit may further include a case portion having a step portion for supporting an end portion of the bobbin portion on an inner periphery thereof and having a support portion protruding to support the outer periphery of the moveable portion along both longitudinal end portions of the stator portion, And a cover member that shields the mounting space is coupled to both ends of the bolt member.

Through the above-mentioned solution, the magnetic concentrating type linear generator including the composite material of the present invention provides the following effects.

First, each of the first permanent magnets of the base magnetic portion is arranged so that the same magnetic poles are opposed to each other, and the magnetic field of each first permanent magnet is compressed in the up and down direction by the repulsive action by the magnetic field of the adjacent first permanent magnet, The cross area between each coil group and the magnetic field is increased so that the amount of power produced at the same amount of displacement during the movement of the moving part can be increased.

Second, since each second permanent magnet of the support magnetic portion is disposed so that the same magnetic pole as the magnetic pole repelled at the boundary portion between the first permanent magnets is opposed to the boundary portion, the magnetic field of the first permanent magnet becomes a radius The magnetic force applied directly to the coil group is strengthened and the power generation efficiency of the product can be improved.

Third, since the magnetic force lines radially outwardly radiated from the respective first permanent magnets through the core block of soft magnetic material disposed between the two first permanent magnets pass through the core block having a high magnetic permeability to be densified, The power generation efficiency of the product can be improved.

1 is a view showing an example of a conventional linear generator.
2 is a cross-sectional view showing a concentrated magnetic flux-generating linear generator including a composite material according to an embodiment of the present invention;
3 is a plan view showing a coil group of a magnetic flux concentrating type linear generator including a composite material according to an embodiment of the present invention.
4A and 4B are sectional views showing a first permanent magnet of a magnetic flux concentrating linear generator including a composite material according to an embodiment of the present invention.
5A and 5B are cross-sectional views showing a second permanent magnet of a magnetic flux concentrating linear generator including a composite material according to an embodiment of the present invention.
6 is a cross-sectional view showing a concentrated magnetic flux-generating linear generator including a composite material according to another embodiment of the present invention.
7 is a perspective view showing a core block of a magnetic flux concentrating type linear generator including a composite material according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a magnetic flux concentrating type linear generator including a composite material according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view showing a magnetic flux concentrating type linear generator including a composite material according to an embodiment of the present invention, FIG. 3 is a cross- sectional view of a coil group of a magnetic flux concentrating type linear generator including a composite material according to an embodiment of the present invention FIGS. 4A and 4B are cross-sectional views showing a first permanent magnet of a magnetic flux concentrating linear generator including a composite material according to an embodiment of the present invention, and FIGS. 5A and 5B are cross- Sectional view showing a second permanent magnet of a magnetic flux concentrating linear generator including a composite material according to an example.

2 to 5B, the magnetic concentrating type linear generator 100 including the composite material includes a stator portion 20, a mover portion 10, and a base magnetic portion 30.

Here, the magnetic concentrating type linear generator 100 refers to a device that converts the kinetic energy of the moving part 10, which is moved up and down by an external force such as wave or vibration, to electric power through the stator part 20.

At this time, when the moving part 10 is moved with the magnetic fields of the coil groups 22 and the moving parts 10 of the stator part 20 crossed, the direction of the magnetic field crossing the coil groups 22 changes And a current can be generated in each coil group 22 in accordance with a change in the direction of the magnetic field.

Although the present embodiment has been described and shown as an example in which the moving part 10 is disposed inside the stator part 20, the moving part 10 is disposed outside the stator part 20 so as to enclose the stator part. Or the like.

2 to 3, the stator unit 20 includes a bobbin portion 21 having a plurality of recessed recessed portions 21a formed along the outer periphery thereof, And a plurality of coil groups 22 formed by the electromotive coils 22a and separated from each other by an insulating portion 21b formed between the respective recessed portions 21a.

Here, it is preferable that the electromotive force coil 22a is provided by a wire surrounded by an insulating sheath, and the electromotive coils wound around the one recessed portion 21a are mutually coupled by an adhesive or the like.

At this time, the electromotive coils 22a are wound along the circumferential direction of the hollow, and the electromotive coils wound on the one recessed portion 21a form one coil group 22.

The bobbin portion 21 may be made of a synthetic resin material having an insulation property and having a predetermined strength or more so as to support the shape of each coil group 22 and may be made of polyoxymethylene (POM) desirable.

At this time, the bobbin portion 21 may be formed in a cylindrical shape having a hollow along the central portion, and a hollow recessed portion 21a recessed in the circumferential direction of the hollow is formed on the outer periphery. The hollow recess portion 21a has a hollow And an insulating portion 21b may be formed between the respective recessed portions.

Here, the bobbin portion 21 includes a plurality of coil groups 22 along the respective recessed portions 21a, and each coil group 22 is partitioned by the insulating portion 21b.

At this time, it is preferable that each coil group 22 is provided so as to have the same number of windings, and three coil groups may be connected by Y wiring or triangular wiring. For example, when three mutually connected coil groups are referred to as u, v and w, the arrangement of the coil group may be u, v, w, u, v, , v, w, w, or the like.

Here, when the moveable portion 10 is moved in the longitudinal direction of the hollow body in a state where the magnetic fields formed by the permanent magnets of the moving parts 10 cross the respective coil groups 22, An alternating current of three phases may be generated.

The stator section 20 includes a step portion 23b for supporting the end portion of the bobbin portion 21 on the inner periphery thereof and a support portion 23b protruding from the stator portion 20 to support the outer periphery of the moveable portion 10 And a case part 23 provided with a pair of guide grooves 23a.

At this time, the bobbin portion 21 is inserted between the step portions 23b and can be accurately fixed at a predetermined position, and the upper and lower edges of the bobbin portion 21 are formed between the step portions 23b The recessed portion 21a of the bobbin portion 21 can be sealed.

Thus, the electromotive coil 22a provided on the outer periphery of the bobbin portion 21 can be prevented from being oxidized by the invasion. Of course, the step 23b may be further provided with a waterproof coating or a packing member to improve airtightness.

The supporting part 23a supports the outer periphery of the moving part 10 so that the moving part 10 can be guided to be accurately moved in the vertical direction. It is possible to prevent breakage of the bobbin portion 21 caused by the breakage.

The moving part 10 is disposed to penetrate the hollow formed at the central part of the bobbin part 21 and has a mounting space 11 formed therein and is relatively moved with respect to the stator part 20 by an external force .

At this time, the moving part 10 is connected to a floating body provided on the sea surface, so that the wave can relatively move an external force with the stator part 20, and the stator part 20 It is also possible to perform relative motion with respect to each other.

Here, the moving part 10 is provided in a cylindrical shape having a diameter corresponding to the hollow, and may be made of stainless steel having corrosion resistance. At this time, a mounting space 11 in which the base magnetic portion 30 can be received is formed in the inside of the moveable portion 10.

The mounting space 11 is preferably formed to have a cross section corresponding to the ring-shaped first permanent magnets 31 and 32 constituting the base magnetic portion 30, and is preferably sealed to prevent invasion.

In detail, the moving part 10 further includes a bolt member 13 disposed at the center of the mounting space 11 and having a cover part 12 coupled to both ends thereof to shield the mounting space 11 Do. Accordingly, the mounting space 11 can be accurately sealed even when the moving part 10 is disposed in the water.

The cover 12 and the bolt 13 may be formed of a nonmagnetic material to prevent magnetic field distortion of the base magnetic portion 30 or the support magnetic portion 40.

The base magnetic portion 30 is provided in the mounting space 11 and includes a plurality of ring-shaped first permanent magnets 31 and 32. That is, the base magnetic portion 30 may include a plurality of ring-shaped first permanent magnets 31 and 32 having the same cross-sectional area and thickness stacked along the longitudinal direction of the hollow.

At this time, the first permanent magnets 31 and 32 are preferably made of a neodymium magnet having strong magnetic force.

Preferably, the first permanent magnets 31 and 32 have a size such that their outer circumferential surfaces are in contact with the inner circumference of the moving part 10, and N and S poles are magnetized along the longitudinal direction of the hollow The same stimulation is arranged so as to face each other for the repulsion of the magnetic force lines.

In this case, the same magnetic poles are arranged to face each other such that the N poles of the first permanent magnets 32 adjacent to the N poles of the first permanent magnets 31 face each other, and the S poles face the S poles It is preferable to understand that the opposite words are understood to mean that the two stimuli are disposed so as to face each other but include both the mutually contacted and spaced states.

4A and 4B, the first permanent magnets 31 and 32 include an NS-type first permanent magnet 31 having an N pole at the upper portion in the longitudinal direction of the hollow and an S pole at the lower portion thereof, And an SN-type first permanent magnet 32 magnetized with an S-pole at the top.

In this case, the first permanent magnets 31 and 32 are arranged in the order of the NS first permanent magnet, the SN type first permanent magnet, the NS first permanent magnet, and the SN type first permanent magnet along the longitudinal direction of the hollow As shown in FIG.

Of course, the first permanent magnets may be provided only as one of the NS type first permanent magnets and the SN type first permanent magnets, and each of the first permanent magnets may have the NS type first permanent magnet A magnet, and an inverted NS-type first permanent magnet, or an SN-type first permanent magnet and an inverted SN-type first permanent magnet in this order.

In detail, the magnetic force lines of the first permanent magnets 31 and 32 are diverged from the N pole and converge to the S pole, and a magnetic field is formed along the outer peripheries of the first permanent magnets 31 and 32.

Since the first permanent magnets 31 and 32 are disposed such that the same magnetic poles are opposed to each other, the magnetic fields of the first permanent magnets are compressed in the upward and downward directions by the repulsive action of the adjacent first permanent magnets, And the intersection area between the coil groups 22 and the magnetic field formed by the first permanent magnets 31 and 32 is increased so that the amount of power produced at the same amount of displacement during the movement of the moving part 10 is increased .

Meanwhile, it is preferable that a support magnetic portion 40 is provided on the inner periphery of the base magnetic portion 30. Here, the support magnetic portion 40 preferably includes a plurality of ring-shaped second permanent magnets 41 and 42 having N poles and S poles magnetized along the radius of the hollow.

At this time, the second permanent magnets 41 and 42 are used as an auxiliary for radially outwardly pushing the magnetic field radially inward of the magnetic fields generated by the first permanent magnets 31 and 32, Or a neodymium magnet having a small diameter, and may be provided with a general permanent magnet in order to reduce the material cost.

In detail, the second permanent magnets 41 and 42 have diameters corresponding to the inner circumferences of the first and second permanent magnets 31 and 32, and the second permanent magnets 41 and 42 have the same thickness as the first permanent magnets 31 and 32 .

5A and 5B, the second permanent magnets 41 and 42 include an NS-shaped second permanent magnet 41 having an N pole on the outer peripheral side and an S pole on the inner peripheral side along the radial direction, And an SN type second permanent magnet (42) having an S pole on the outer periphery side and an N pole on the inner periphery side. The second permanent magnets (42) include a SN type second permanent magnet , And NS-type second permanent magnets.

Here, each of the second permanent magnets 41 and 42 may be disposed along a boundary (k) between the first permanent magnets.

Here, the term 'k' between the first permanent magnets is understood to mean a contact surface when one first permanent magnet and another adjacent first permanent magnet come into contact with each other, and the two first permanent magnets are spaced apart It is preferable to be understood to mean a spaced space between the two first permanent magnets and a face of each first permanent magnet facing the spaced space.

Of course, in the case where a separate member such as a core block is provided between two adjacent first permanent magnets, it is preferable to be understood as including a contact surface between the core block and two first permanent magnets contacting the core block.

At this time, each of the second permanent magnets 41 and 42 may be arranged such that a portion corresponding to the longitudinal center portion is aligned with a longitudinally central portion of each of the boundary portions k.

It is preferable that the second permanent magnets 41 and 42 are arranged so that the same magnetic poles as the magnetic poles repelled at the respective boundary portions k are opposed to the respective boundaries k.

That is, the NS type second permanent magnet (41) having the N pole on the outer peripheral side is disposed at a portion of the boundary portion between the first permanent magnets facing the N pole and the N pole, and the boundary portion between the first permanent magnets And the SN-type second permanent magnet 42 having the S-pole on the outer peripheral side is disposed at a portion where the S-pole and the S-pole face each other.

Accordingly, the magnetic field of the first permanent magnets 31 and 32 is radially outwardly pushed by the repulsive force of the second permanent magnets 41 and 42, so that the magnetic force applied directly to the coil group is strengthened.

That is, since the magnetic force lines are not formed radially inward from the first permanent magnets 31 and 32 due to the magnetic fields of the second permanent magnets 41 and 42, The number of lines of magnetic force emitted toward the inside of the direction is decreased and the number of lines of magnetic force radially outward of each of the first permanent magnets 31 and 32 is increased.

As a result, the magnetic field and its kinetic energy that can not be applied to the coil group 22 and can be wasted can be minimized, and as the number of magnetic flux lines applied directly to the coil group 22 increases, the first permanent magnet 31 The magnetic force applied directly to the coil group 22 can be significantly enhanced, so that the power generation efficiency of the product can be improved without using expensive permanent magnets.

FIG. 6 is a cross-sectional view of a concentrated magnetic flux generator including a composite material according to another embodiment of the present invention, and FIG. 7 is a cross-sectional view of a concentrated magnetic flux concentric linear generator including a composite material according to another embodiment of the present invention. Fig.

In this embodiment, the basic configuration except for that the base magnetic portion 130 of the linear generator 200 further includes the ring-shaped core block 133 is the same as the one embodiment described above, so a detailed description of the same configuration will be omitted.

6 to 7, the base magnetic portion 130 is disposed between one first permanent magnet 131 and another adjacent first permanent magnet 132, and a plurality of It is preferable to further include a ring-shaped core block 133.

Here, the soft magnetic material means a material having a high magnetic permeability that is largely magnetized to a weak magnetic field and a high coercive force having a large resistance to hold the magnetic flux density in the deceleration magnetic field. The ring-shaped core block 133 is made of iron (Fe) (Si) alloy. ≪ IMAGE >

In this case, the ring-shaped core block 133 may have the same cross-sectional area as that of the first permanent magnets 131 and 132, and may have a thickness smaller than that of the first permanent magnets 131 and 132.

Here, the second permanent magnets 141 and 142 are provided to have the same thickness as the ring-shaped core block 133, and are formed along the inner circumference of the ring-shaped core block 133 disposed in the space between the first permanent magnets 131 and 132 .

The second permanent magnets 141 and 142 may be spaced apart from each other to expose the inner circumference of the first permanent magnets 131 and 132. The second permanent magnets 141 and 142 may be formed of a ferromagnetic material such as ferrite It is also possible that the provided core block is added separately.

The ring-shaped core block 133 is disposed at a boundary m between the first permanent magnets 131 and 132 arranged so that the same magnetic poles face each other.

That is, each of the ring-shaped core blocks 133 is disposed between facing surfaces between two adjacent first permanent magnets 131 and 132, and the upper surface and the lower surface of the ring-shaped core block 133 are opposed to each other between the adjacent first permanent magnets 131 and 132 And the first permanent magnets 131 and 132 are arranged so that the magnetic poles of the respective opposing surfaces are the same.

In detail, the two first permanent magnets adjacent to the one boundary m form a magnetic field radially expanded due to mutual repulsive forces due to the same magnetic poles. As the magnetic field passes through the ring-shaped core block as a soft magnetic material, The density of magnetic flux density is increased.

Accordingly, the magnetic field of the first permanent magnets 131 and 132 forms a wide crossing region with the coil group, and the density of lines of magnetic force in the crossing region increases, so that the power generation efficiency of the product can be improved.

Here, on the inner circumference of each ring-shaped core block 133, a support magnetic part 140 including a plurality of ring-shaped second permanent magnets 141 and 142 having N poles and S poles magnetized along the hollow radial direction is provided .

At this time, the second permanent magnets 141 and 142 have an NS type second permanent magnet 141 having an N pole on the outer peripheral side and an S pole on the inner peripheral side, and an S pole on the outer peripheral side and an N pole on the inner peripheral side The second permanent magnets 141 and 142 are preferably disposed such that magnetic poles identical to the magnetic poles of the adjacent first permanent magnets are opposed to the inner periphery of each of the ring-shaped core blocks 132 Do.

That is, the inner circumference of the core block, which is disposed between one first permanent magnet 132 having the N-pole magnetized on the lower surface thereof and another adjacent first permanent magnet magnetized N-pole on the upper surface thereof, The magnetized NS type second permanent magnet 141 is disposed so that the N pole of the second permanent magnet can be disposed opposite to the inner periphery of the core block.

It is preferable that an SN-shaped first permanent magnet 142 having an S pole magnetized on the outer peripheral side is disposed on the inner periphery of the core block 133 disposed between the S poles of the two first permanent magnets 131 and 132.

Due to the repulsive force of the second permanent magnets 141 and 142, the number of magnetic force lines radially inward radially in the first permanent magnets 131 and 132 decreases, and the number of magnetic force lines radially outward Is increased.

In addition, since the magnetic force lines radially outward of the first permanent magnets 131 and 132 pass through the core block having a high magnetic permeability to be densified, the magnetic force applied to the coil group 122 is strengthened and the power generation efficiency of the product can be improved .

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100, 200: Linear generator 3, 10:
4, 20: stator part 11: mounting space
12: cover part 13: bolt member
21: bobbin portion 22: coil group
22a: electromotive coil 23: case part
30, 130: base magnetic portion 31, 32: first permanent magnet
133: core block 40, 140: support magnetic part
41, 42: second permanent magnet

Claims (5)

A stator part including a plurality of coil groups divided by an insulating part formed by an electromotive coil wound around the inside of each of the recessed parts and formed between the recessed parts, ;
A mover part disposed to penetrate through a hollow formed at a central portion of the bobbin part and having a mounting space therein and being relatively movable with respect to the stator part by an external force; And
And a plurality of ring-shaped first permanent magnets provided in the mounting space, the plurality of ring-like permanent magnets being arranged such that N poles and S poles are magnetized along the longitudinal direction of the hollow and the same magnetic poles are opposite to each other for repulsion of magnetic lines of force. Flux concentrating linear generator. The method according to claim 1,
Wherein the base magnetic portion further comprises a plurality of ring-shaped core blocks arranged between one first permanent magnet and another adjacent first permanent magnet, the ring-shaped core block being made of a soft magnetic material. . 3. The method according to claim 1 or 2,
And a plurality of ring-shaped second permanent magnets magnetized in N and S poles along the radial direction of the hollow in the inner periphery of the base magnetic portion,
Wherein each of the second permanent magnets is arranged such that the same magnetic poles as the magnetic poles repelled at the boundary portions of the respective first permanent magnets are opposed to the respective boundary portions. The method of claim 3,
And each of the second permanent magnets is arranged such that the same magnetic pole as the magnetic pole of the adjacent first permanent magnet faces the inner periphery of each of the ring-shaped core blocks. The method according to claim 1,
The stator unit may further include a case portion having a step portion for supporting an end portion of the bobbin portion in an inner periphery thereof and a supporting portion protruding to support the outer periphery of the moving portion along both longitudinal direction end portions,
Further comprising a bolt member disposed at a central portion of the mounting space and having a cover portion shielding the mounting space at both ends thereof.
KR1020150075785A 2015-05-29 2015-05-29 magnetic flux concentration type linear generator comprising composite material KR101702026B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101861255B1 (en) * 2017-01-03 2018-05-25 광운대학교 산학협력단 electroner energy harvester using magnet spring

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KR20110014829A (en) * 2009-08-06 2011-02-14 아주대학교산학협력단 T-shaped hull bach magnet array, and motor and generator using it
KR101275286B1 (en) * 2012-03-23 2013-06-17 충남대학교산학협력단 Linear vibration motor
JP2013215021A (en) * 2012-03-30 2013-10-17 Kogakuin Univ Electromagnetic induction device
KR101448467B1 (en) * 2013-10-10 2014-10-15 영남대학교 산학협력단 Resonance linear gengrator using vibration of a road surface
KR101508411B1 (en) 2008-08-26 2015-04-14 시베이스드 아베 A Wave-Power Unit and Power generation method

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KR101508411B1 (en) 2008-08-26 2015-04-14 시베이스드 아베 A Wave-Power Unit and Power generation method
KR20110014829A (en) * 2009-08-06 2011-02-14 아주대학교산학협력단 T-shaped hull bach magnet array, and motor and generator using it
KR101275286B1 (en) * 2012-03-23 2013-06-17 충남대학교산학협력단 Linear vibration motor
JP2013215021A (en) * 2012-03-30 2013-10-17 Kogakuin Univ Electromagnetic induction device
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Publication number Priority date Publication date Assignee Title
KR101861255B1 (en) * 2017-01-03 2018-05-25 광운대학교 산학협력단 electroner energy harvester using magnet spring

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