KR20250115127A - Wind power generation device with a tapered magnet structure - Google Patents

Abstract

The present invention is characterized by comprising: a fixed unit installed on a support object and including a plurality of coil supports extending in a direction away from the support object; a master body installed on the fixed unit so as to be vibrated by wind; a power generation unit installed on the master body and generating power using vibration of the master body; and a permanent magnet connected to the master body by the power generation unit so as to vibrate together with the master body, and installed so as to be positioned within an installation space between the coil supports, the length of the inner diameter of which changes along the direction away from the support object.
According to the present invention, the purpose is to improve the power generation efficiency of a wind turbine by applying a tapered magnet structure, while reducing management and maintenance costs and generating no noise because there is no rotating blade.
▶(Korean) This project (outcome) is the result of a local government-university collaboration-based regional innovation project, supported by the National Research Foundation of Korea and funded by the Ministry of Education in 2023 (2021RIS-002).
▶(English) This research was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-002)

Description

Wind power generation device with a tapered magnet structure

The present invention relates to a wind power generator having a tapered magnet structure, and more particularly, to a wind power generator having a tapered magnet structure and no blades that can produce electricity without rotating blades that impede the movement of birds.

Wind turbines, which convert wind into kinetic energy through rotating blades and then use the resulting rotational force to generate electricity, are an essential energy solution for achieving carbon neutrality because they emit no pollutants. Wind turbines rotate their shafts, driven by the wind, and then rotate a generator shaft connected to the shaft, generating power (electricity).

Thus, the conventional wind turbine rotor blades have the disadvantage of not being able to rotate the shaft in weak winds, and in strong winds such as typhoons, the rotor shaft rotates too quickly, which can damage the generator or break the blades, supports, etc. It is also true that various complaints have been received regarding noise generated by the rotor blades, which are a key component, and bird collisions and interference with migratory birds. Furthermore, because the width of the blades cannot be increased to protect them from strong winds, they do not rotate well in weak winds, which leads to the disadvantage of not being able to continuously supply power.

Therefore, related prior technologies have been proposed to solve the problem of the rotary blades used in conventional wind power generation having complex configurations, which increase installation costs, and the problem of difficult maintenance, which increases maintenance costs.

The proposed prior art auxiliary blade-less wind turbine (Korean Patent Publication No. 10-1035045) is a wind turbine that generates power by rotating a rotary blade with wind, and includes a vertically installed support, a rotary support installed on the upper side of the support and rotating, a rotary axis installed on the rotary support and rotating while being perpendicular to the rotational center axis of the rotary support and protruding, a blade fixing member installed at an end of the rotary axis, a plurality of rotary blades installed on the blade fixing member to rotate around their respective hinge axes, and installed to rotate around the hinge axes in the opposite direction to the rotational support, and an elastic support device that elastically supports the rotary blades and adjusts the amount of rotation of the rotary blades around the hinge axis according to the strength of the wind.

Conventionally developed wind power generation devices also have large rotor blades, which cause problems such as noise generated by the rotor blades and bird collisions and interference with migratory bird movements.

Korean Patent Publication No. 10-1035045: Wind turbine without auxiliary blades

The present invention was created to solve the problems of the above-mentioned prior art, and its purpose is to improve the power generation efficiency of a wind turbine by applying a bladeless wind turbine and a tapered magnet structure that can produce electricity without a rotating blade that interferes with the movement of birds.

In order to achieve the above object, a wind power generation device having a tapered magnet structure according to the present invention comprises a fixed unit that is installed on a support object and includes a plurality of coil supports extending in a direction away from the support object, a master body installed on the fixed unit so as to be vibrated by wind, a power generation unit that is installed on the master body and generates power using vibration of the master body, and a permanent magnet that is connected to the master body by the power generation unit so as to vibrate together with the master body and is installed so as to be positioned within an installation space between the coil supports, the length of the inner diameter of which changes along the direction away from the support object.

The above permanent magnet is characterized in that the inner diameter length gradually decreases in the direction away from the support object.

The above power generation unit comprises a winding coil installed on the coil support facing the permanent magnet, a penetrating member fixed to the master body, a support member extending so that an end thereof can be inserted into the installation space and formed so that the permanent magnet can slide along the longitudinal direction, and a spring member providing elasticity to the permanent magnet so that the permanent magnet is positioned in the installation space facing the winding coil.

The coil support is installed to be inserted into a vibration space formed inside the mast body, and the fixing unit further includes an elastic pad installed on an outer surface of the coil support facing the inner wall surface of the master body to provide elasticity in a direction away from the coil support when the master body is adjacent to the coil support.

The above power generation unit further includes a magnet moving part installed on the support member to move the permanent magnet away from the support object to increase the distance between the permanent magnet and the winding coil when the master body vibrates at a speed exceeding the reference speed, thereby preventing overpower from being generated in the power generation unit.

The purpose of the wind power generation device having a tapered magnet structure of the present invention is to have low management and maintenance costs and to not generate noise because there is no rotating blade, and to improve the power generation efficiency of the wind power generator by applying the tapered magnet structure.

Figure 1 is a cross-sectional view according to a first embodiment of a wind power generator having a tapered magnet structure according to the present invention.
Fig. 2 is a cross-sectional view showing the vibration state of the master body of Fig. 1,
Figure 3 is a partial cross-sectional view according to a second embodiment of a wind power generator having a tapered magnet structure according to the present invention.
Fig. 4 is a partial cross-sectional view according to a third embodiment of a wind power generator having a tapered magnet structure according to the invention.

Hereinafter, a wind power generation device having a tapered magnet structure according to an embodiment of the present invention will be described in detail with reference to the attached drawings. The present invention can be modified in various ways and can take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, but it should be understood that the invention includes all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used to indicate similar components. In the attached drawings, the dimensions of structures are shown larger than actual size to ensure clarity of the present invention.

While terms like "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning within the context of the relevant technology, and shall not be construed in an idealized or overly formal sense unless explicitly defined herein.

FIGS. 1 to 3 illustrate a first embodiment of a wind power generation device (10) having a tapered magnet structure according to the present invention.

A wind power generation device (10) having a tapered magnet structure according to the present invention is installed on a support object (1) and includes a fixed unit (100) including a plurality of coil supports (120) extending in a direction away from the support object (1), a master body (200) installed on the fixed unit (100) so as to be vibrated by wind, a power generation unit (400) installed on the master body (200) and generating electricity by utilizing vibration of the master body (200), and a permanent magnet (300) connected to the master body (200) by the power generation unit (400) so as to vibrate together with the master body (200), and installed so as to be positioned within an installation space (101) between the coil supports (120), the length of the inner diameter of which changes along the direction away from the support object (1).

The above fixed unit (100) includes a fixed body (110) and a coil support (120).

The above fixed body (110) is fixed to a support object (1) by an anchor bolt (not shown) on the lower surface. At this time, the fixed body (110) is not limited to being fixed to the support object (1), but can also be fixed to an outer wall surface of a building, or a means of transportation including an automobile or a ship.

The above coil supports (120) are formed in multiple numbers so as to extend upward from the upper surface of the fixed body (110). That is, the coil supports (120) extend upward from the upper surface of the fixed body (110) so as to be spaced apart from each other by a predetermined distance. It is preferable that two coil supports (120) are formed as shown in the drawing so that a predetermined installation space (101) is formed between the coil supports (120), but it is also preferable that a plurality of coil supports (120) are formed so as to be spaced apart from each other along a ring shape by the designer.

The above master body (200) has a vibrating body (210) and the cantilever beam (220).

The above-mentioned vibrating body (210) is a cylinder extending vertically to vibrate by interference from the wind, and a vibration space (201) is formed inside to allow the coil support (120) to be inserted. The above-mentioned vibrating body (210) is made of a soft, elastic plastic so that it can easily vibrate by interference from the wind speed, and any material having soft elasticity, such as a conventionally developed plastic, can be applied.

The cantilever beam (220) extends vertically in the installation space (101) and its lower end is fixed to the upper surface of the fixed body (110) between the coil supports (120). In addition, the upper end of the cantilever beam (220) is connected to a penetrating member (420) described later so that the vibrating body (210) can be supported to vibrate, and is made of a material having a predetermined elasticity.

The permanent magnet (300) is connected to the master body (200) by the power generation unit (400) so that the power generation unit (400) vibrates together with the master body (200) to generate power. The permanent magnet (300) is installed so as to be located within the installation space (101). The length of the inner diameter of the permanent magnet (300) changes in the direction away from the support object (1). More specifically, the permanent magnet (300) has a conventional tapered structure in which the length of the inner diameter gradually decreases in the direction away from the support object (1), that is, from the bottom to the top. The permanent magnet (300) is preferably in the shape of a truncated triangular pyramid, but is not limited to the shape described above, and any conventional tapered structure is applicable, so additional description thereof is omitted.

In addition, although not shown in the drawing, the permanent magnets (300) are installed in multiple numbers adjacent to each other in the vertical direction to prevent overpower generation due to excessive vibration of the master body (200). The permanent magnets (300) are provided with a plate member that separates the permanent magnets (300) by a predetermined distance on the contact surface of the adjacent permanent magnets (300).

Meanwhile, the above permanent magnet (300) can be applied to any conventional magnet technology that generates a magnetic field and has magnetism without the need for external electrical energy supply, so additional technology is omitted.

The above-mentioned power generation unit (400) comprises a winding coil (410), a penetrating member (420), a support member (430), and a spring member (440).

The above-mentioned winding coil (410) is fixed internally so as to be wound around the coil supports (120) facing the permanent magnet (300). At this time, although not shown in the drawing, the winding coil (410) may also be installed so as to be wound around the outer peripheral surfaces of the coil supports (120). The above-mentioned winding coil (410) applies the coil technology of a conventional generator that generates an induced current by electromagnetic induction when the permanent magnet (300) vibrates.

The above-mentioned penetrating member (420) is formed with an outer diameter corresponding to the inner diameter of the vibrating body (210) so that its outer surface is fixed to the inner wall surface of the vibrating body (210) at a position spaced a predetermined distance upward from the fixed body (110). The above-mentioned penetrating member (420) is a circular plate whose lower surface is supported by the upper end of the cantilever beam (220). At this time, the above-mentioned penetrating member (420) is formed with a penetrating hole (401) so that the above-mentioned coil support (120) passes through it.

The above through hole (401) is formed with an inner diameter larger than the outer diameter of the coil support (120) so that the through member (420) does not interfere with the coil support (120) when vibrating together with the vibrating body (210).

The above support member (430) is formed to extend upward from the upper surface of the penetration member (420) between the coil supports (120) so that it can be positioned in the installation space (101). The support member (430) is installed so that the permanent magnet (300) can slide along the longitudinal direction.

The spring member (440) provides elasticity to the permanent magnet (300) by spacing it upward from the penetrating member (420) by a predetermined distance, so that it is positioned at a reference height facing the winding coil (410). More specifically, the upper end of the spring member (440) supports the descending permanent magnet (300), and the lower end is fixed to the upper surface of the penetrating member (420), thereby providing elasticity to the permanent magnet (300) corresponding to the compressive force acting on the permanent magnet (300) moving downward due to the vibration transmitted to the permanent magnet (300), thereby moving the permanent magnet (300) to the reference height.

The above spring member (440) is applied with a compression spring formed to surround the outer surface of the support member (430), but is not limited thereto and any technology that can provide elasticity to the permanent magnet (300) can be applied.

The above power generation unit (400) further includes a power conversion unit (not shown) that receives induced power generated from the winding coil (410) when the permanent magnet (300) vibrates and converts it into a predetermined direct current or alternating current voltage, and a battery (not shown) that is connected to the power conversion unit and stores power. The power conversion unit is connected to a power line of a previously constructed power supply system and can supply the converted direct current power to a place that needs alternating current power supply or store it in the battery.

The above battery can be any conventional charging technology capable of storing power supplied from a power conversion unit, but it is preferable to use a lithium ion battery.

The operating state of the wind power generation device (10) having a tapered magnet structure according to the present invention will be described in more detail as follows.

The above vibrating body (210) is a long and thin structure, and a vortex is generated at the back of the structure due to the flow, and the vortex is generated alternately on both sides of the structure, causing the structure to vibrate due to a vortex shedding phenomenon. Then, the vibration is transmitted to the permanent magnet (300) by the penetrating member (420) connected to the vibrating body (210), and an induced power is generated by the vibrating permanent magnet (300) and the winding coil (410).

The bladeless wind power generation device (10) of the present invention described above has a cylindrical vibrating body (210) extending vertically to vibrate due to the wind blowing around it, so that it does not generate noise because it does not have a rotating blade, and can generate power without interfering with the movement of birds.

Meanwhile, Fig. 3 illustrates a second embodiment of a wind power generation device (20) having a tapered magnet structure.

Elements that have the same function as those in the previously illustrated drawings are indicated with the same reference numerals.

The fixed unit (100) of the wind power generator 20) having a tapered magnet structure according to the present invention further includes an elastic pad (130).

The elastic pad (130) provides elasticity in a direction away from the coil support (120) when the vibrating body (210) of the master body (200) is adjacent to the coil support (120). The elastic pad (130) is installed on the outer surface of the coil support (120) facing the inner wall surface of the vibrating body (210).

More specifically, the elastic pad (130) is compressed by the vibrating body (210) when the vibrating body (210) vibrates and the inner surface of the vibrating body (210) is adjacent to the coil support (120), and provides an elastic force corresponding to the compression force to the vibrating body (210), thereby increasing the acceleration of the vibration.

At this time, as shown in the drawing, it may be installed at a position corresponding to the section where the winding coil (410) is installed on the outer surface of the coil support (120) to prevent damage to the winding coil (410). The installation position of the elastic pad (130) is not limited to the described content, and it may be installed on the inner surface of the vibrating body (210) so as to provide elasticity to the vibrating body (210) that vibrates in the wind.

The bladeless wind power generator (30) of the present invention described above has an elastic pad (400) that provides elasticity to the vibrating body (210), so that the speed of vibration can also be increased.

Meanwhile, Fig. 4 illustrates a third embodiment of a wind power generation device (30) without blades.

The power generation unit (400) of the wingless wind power generation device (30) of the present invention further includes a magnet moving part (500).

The above magnet moving part (500) moves the permanent magnet (300) to increase the distance between the permanent magnet (300) and the winding coil (410) in order to prevent overpower from being generated in the power generation unit (400) when the master body (200) vibrates at a speed higher than a preset reference speed. More specifically, the magnet moving part (500) is provided with an elevating part (510) that drives the support part (430) and the spring part (440) to move the permanent magnet (300) and the support part (430) upward on the upper surface of the penetrating part (342), a vibration detection sensor (520) that is installed in the penetrating part (420) or the vibrating body (210) and measures the speed of vibration of the vibrating body (210), and a driving control part (not shown) that controls the elevating part (510) to move the permanent magnet (300) upward when the vibration speed of the vibrating body (210) is higher than the reference speed based on the vibration speed detected by the vibration detection sensor (520).

The above-mentioned lifting member (510) is fixed at the lower end to the penetrating member (420) so as to elevate the permanent magnet (300) and the support member (430). That is, the above-mentioned lifting member (510) further includes a connecting member (not shown) that fixes the upper end to the lower end of the support member (430). Since the above-mentioned lifting member (510) applies a conventional actuator technology in which the vertical length is extended, additional technology is omitted.

The above vibration detection sensor (520) can be applied to any conventionally developed technology capable of measuring the speed of vibration.

The wingless wind power generation device (30) of the present invention described above is provided with the magnet moving part (500), so that when the master body (200) vibrates at a preset reference speed or higher, the distance between the permanent magnet (300) and the winding coil (410) is increased, thereby preventing overpower from occurring in the power generation unit (400).

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments disclosed herein, but is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

1: Support object
100: Fixed unit 110: Fixed body
120: Coil support 200: Master body
210: vibrating body 220: cantilever beam
300: Permanent magnet 400: Power generation unit
410: Winding coil 420: Penetrating member
430: Support member 440: Rolling member
500: Magnet moving part 510: Lifting part
520: Vibration detection sensor

Claims (5)

A fixed unit installed on a support object and including a plurality of coil supports extending in a direction away from the support object;
A master body installed on the above fixed unit so as to be vibrated by wind;
A power generation unit installed in the master body to generate power using vibration of the master body; and
A permanent magnet connected to the master body by the power generation unit so as to vibrate together with the master body, and installed within the installation space between the coil supports, the length of the inner diameter of which changes along the direction away from the support object; characterized in that
A wind power generator having a tapered magnet structure.
In the first paragraph,
The above permanent magnet is characterized in that the inner diameter length gradually decreases in the direction away from the support object.
A wind power generator having a tapered magnet structure.
In the first paragraph,
The above power generation unit
A winding coil installed on the coil support facing the permanent magnet;
A penetrating member fixed to the above master body;
A support member having an end portion extended so as to be inserted into the installation space and having a permanent magnet formed so as to be slidable along the length direction; and
characterized in that it comprises a spring member that provides elasticity to the permanent magnet so that the permanent magnet is positioned in the installation space facing the winding coil;
A wind power generator having a tapered magnet structure.
In the first paragraph,
The above coil support is installed so as to be introduced into a vibration space formed inside the mast body,
The above fixed unit is
The coil support is characterized in that it further comprises an elastic pad installed on the outer surface of the coil support facing the inner wall surface of the master body to provide elasticity in a direction away from the coil support when the master body is adjacent to the coil support.
A wind power generator having a tapered magnet structure.
In the third paragraph,
The above power generation unit
In order to prevent overpower from being generated in the power generation unit by increasing the distance between the permanent magnet and the winding coil when the master body vibrates at a speed exceeding the reference speed, a magnet moving unit installed on the support member is further provided; characterized in that,
A wind power generator having a tapered magnet structure.