KR101842536B1 - Device for adjusting natural frequency of wind power generator - Google Patents

Device for adjusting natural frequency of wind power generator Download PDF

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KR101842536B1
KR101842536B1 KR1020170126918A KR20170126918A KR101842536B1 KR 101842536 B1 KR101842536 B1 KR 101842536B1 KR 1020170126918 A KR1020170126918 A KR 1020170126918A KR 20170126918 A KR20170126918 A KR 20170126918A KR 101842536 B1 KR101842536 B1 KR 101842536B1
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South Korea
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natural frequency
wind power
tower
power generator
wind turbine
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KR1020170126918A
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Korean (ko)
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김병문
정연종
서동환
박종훈
손영수
박진수
허철구
허철기
정병기
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(주)영광공작소
동국대학교 경주캠퍼스 산학협력단
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0296—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/085—Details of flanges for tubular masts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/912—Mounting on supporting structures or systems on a stationary structure on a tower
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Wind Motors (AREA)

Abstract

The present invention relates to an apparatus for adjusting natural frequency of a wind power generator, which comprises: a base module fixed to cover an outer circumferential surface of a wind power generator tower and having a male screw; and a frequency adjusting module screwed with the male screw of the base module and rotated by wind power. Natural frequency of the tower can be changed in accordance with the height of the frequency adjusting module. Accordingly, the frequency adjusting module can move between an upper portion and a lower portion of the tower by the wind power to change the natural frequency of the wind power generator. Therefore, resonance of the wind power generator can be prevented.

Description

풍력발전기의 고유진동수 조절장치{Device for adjusting natural frequency of wind power generator}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wind power generator,

본 발명은 풍력발전기의 고유진동수 조절장치에 관한 것으로, 풍력발전기의 고유진동수를 변경하여 풍력발전기의 공진을 방지하는 풍력발전기의 고유진동수 조절장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a natural frequency regulating device for a wind power generator, and more particularly, to a natural frequency regulating device for a wind power generator that prevents resonance of a wind power generator by changing a natural frequency of the wind power generator.

일반적으로, 풍력 에너지는 급성장하는 에너지 공급원으로서, 화석 기반 에너지 공급원에 비하여 청정하면서 재생 가능하며, 생태학적으로 자연 친화적인 에너지를 제공한다. 따라서, 풍력 발전은 유력한 대체 에너지원으로인정받고 있으며, 그 이용이 늘어가고 있는 추세이다.Generally, wind energy is a rapidly growing energy source, providing clean, renewable, and ecologically friendly energy compared to fossil-based energy sources. Therefore, wind power generation is recognized as a viable alternative energy source, and its use is increasing.

풍력 발전 설비는 여러 가지 형태나 구조의 블레이드를 이용하여 풍력 에너지를 회전 에너지와 같은 기계적 에너지로 변환하고, 변환된 기계적 에너지를 이용하여 발전기를 구동시킴으로써 전력을 생산하는데, 첨부된 도면을 참조하여 설명하면 다음과 같다.The wind power generation system uses electric power generated by converting the wind energy into mechanical energy such as rotational energy and driving the generator using the converted mechanical energy by using blades having various shapes or structures. Then,

도 1은 종래의 기술에 따른 풍력발전기를 도시한 도면이다.1 is a view showing a conventional wind turbine generator.

도 1에 도시된 바와 같이, 종래의 기술에 따른 풍력발전기는 지면 또는 해상의 지지구조물에 세워진 일정 높이의 타워(40)와, 타워(40)의 상단에 회전 가능하게 설치되어 지면으로부터 일정한 높이에 위치하는 유선형의 나셀(nacelle; 30)과, 나셀(30)의 일측에 풍력에 의해 회전 가능하게 설치되는 블레이드(20)를 포함할 수 있다.As shown in FIG. 1, a conventional wind turbine generator includes a tower 40 having a predetermined height set on a ground or a support structure on the sea, a rotor 40 rotatably installed at the top of the tower 40, And a blade 20 rotatably installed on one side of the nacelle 30 by wind power.

여기서, 블레이드(20)는 다수로 이루어져서 나셀(30) 내의 로터를 회전시키도록 하고, 나셀(30) 내부에 로터의 회전력을 전기 에너지로 변환하여 전기를 생성하도록 하는 발전기가 설치된다.Here, the blade 20 is provided with a plurality of generators for rotating the rotor in the nacelle 30, and a generator for generating electricity by converting the rotational force of the rotor into electric energy in the nacelle 30.

이러한 풍력발전기는 고도에 따른 풍속의 추력 변화와 빠른 공기가 타워를 지날 때 발생하는 와류(vortex)에 의해 진동이 발생하게 되며, 해상풍력발전기는 파도에 의해 진동이 발생하기도 한다.Such a wind turbine generates vibration due to the change in the wind speed according to the altitude and the vortex generated when the fast air passes through the tower, and the offshore wind turbine generates vibration due to the waves.

풍력발전기에서 진동이 발생할 때, 블레이드의 회전주파수와 풍력발전기의 구조물 간에 공진이 발생할 수 있으며, 이러한 공진으로 인한 매우 높은 진동은 풍력발전기의 구조물에 큰 손상을 발생하게 하며, 발전기의 효율성을 감소시키게 된다.When vibrations occur in a wind turbine, resonance can occur between the rotational frequency of the blades and the structure of the wind turbine generator, and very high vibrations due to such resonance can cause significant damage to the structure of the wind turbine generator, do.

또한, 풍력발전기는 점차 대형화되고 있어 높이가 매우 높아져 가고 있으며, 이는 풍력발전기 구조물의 고유진동수를 낮아지게 하므로 공진 현상 발생 가능성은 점차 높아지고 있다.In addition, wind turbine generators are becoming larger and heavier, and the resonance phenomenon is more likely to occur because the natural frequencies of wind turbine generators are lowered.

따라서, 종래의 풍력발전기는 외부에서 작용하는 외부기진력과의 공진을 회피하기 위해 타워의 두께를 증가시켜 고유진동수를 높여 공진을 예방하고 있으나, 이는 고유진동수를 증가시키는데 한계가 있을 뿐 아니라 구조물의 중량을 지나치게 증가시켜 타워가격을 상승시키는 문제를 발생시킨다.Therefore, in the conventional wind turbine generator, resonance is prevented by increasing the natural frequency by increasing the thickness of the tower in order to avoid resonance with external excitation force externally applied. However, this not only limits the increase of the natural frequency, It causes a problem of excessively increasing the weight and raising the tower price.

또한, 이러한 문제점을 개선하기 위해 대한민국 공개특허 10-2013-0048102에서는 풍력발전기의 타워에 국부적으로 중량물을 공급 및 배출하거나 이동시킴으로써 풍력발전기의 고유 진동수를 조절하여 풍력발전기에 공진이 발생하는 것을 방지하는 고유 진동수 조절장치를 개시하고 있다. 그러나 대한민국 공개특허 10-2013-0048102의 경우에는 고유 진동수의 정밀한 변경이 불가하고, 중량체를 설치해야하는 부담이 있었다.In order to solve such a problem, Korean Patent Laid-Open Publication No. 10-2013-0048102 discloses a method of controlling the natural frequency of a wind turbine generator by supplying, discharging, or moving a heavy load locally to a tower of the wind turbine generator to prevent resonance from occurring in the wind turbine generator Discloses a natural frequency adjusting device. However, in Korean Patent Publication No. 10-2013-0048102, it is impossible to precisely change the natural frequency and there is a burden to install a weight.

따라서, 풍력발전기의 고유진동수를 변경하여 풍력발전기의 공진을 방지하는 개선된 형태의 풍력발전기의 고유진동수 조절장치의 개발이 요구되고 있는 실정이다.Accordingly, there is a need to develop an improved natural frequency control device for a wind turbine, which prevents the resonance of the wind turbine generator by changing the natural frequency of the wind turbine generator.

미국 공개특허 US 2009/0142178 A1US Published Patent US 2009/0142178 A1 대한민국 공개특허 10-2013-0048102Korean Patent Publication No. 10-2013-0048102 유럽 등록 특허 EP 1 008 747 B1European Registered Patent EP 1 008 747 B1 대한한국 공개실용신안 10-2012-0003512Korea's public utility model 10-2012-0003512

본 발명은 전술한 종래의 제반 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 풍력에 의해 풍력발전기의 고유진동수를 변경하여 풍력발전기의 공진을 방지하는 풍력발전기의 고유진동수 조절장치를 제공하는 데 있다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for adjusting the natural frequency of a wind turbine generator, which prevents resonance of the wind turbine generator by changing the natural frequency of the wind turbine generator There is.

상기와 같은 목적을 달성하기 위한 본 발명의 풍력발전기의 고유진동수 조절장치는, 풍력발전기 타워의 외주면을 감싸도록 고정 설치되며, 수나사가 형성된 베이스모듈; 및 상기 베이스 모듈의 수나사와 나사 체결되며, 풍력에 의해 회전하는 진동 조절모듈;을 포함하되, 상기 진동수 조절모듈의 높이에 따라 타워의 고유진동수가 변경되는 것을 특징으로 한다.In order to achieve the above object, the present invention provides an apparatus for adjusting a natural frequency of a wind turbine, comprising: a base module fixedly installed to surround an outer circumferential surface of a wind turbine tower and having a male screw; And a vibration control module that is screwed with the male screw of the base module and is rotated by wind force, wherein the natural frequency of the tower is changed according to the height of the frequency control module.

또한, 상기 베이스모듈은 반원형 단면을 가지도록 제1베이스와 제2베이스로 구분 형성되며, 상기 제1,2베이스에는 제1나사체결공이 각각 형성된 것을 특징으로 한다.In addition, the base module is divided into a first base and a second base so as to have a semicircular cross section, and first and second screw holes are formed in the first and second bases, respectively.

또한, 상기 진동 조절모듈은, 부채꼴 단면을 가지는 본체와 상기 본체에서 연장된 반구형 풍배가 구비된 제1 내지 제4회전부재로 구분 형성되며, 상기 제1 내지 제4회전부재에는 제2나사체결공이 각각 형성된 것을 특징으로 한다.The vibration control module may be divided into first to fourth rotary members having a main body having a fan-shaped cross section and a hemispherical windbreaker extending from the main body, and the first to fourth rotary members are provided with a second screw- Respectively.

본 발명에 따른 풍력발전기의 고유진동수 조절장치에 따르면, 진동수 조절모듈이 풍력에 의해 타워의 상부와 하부를 이동하며 풍력발전기의 고유진동수를 변경하여 풍력발전기의 공진을 방지하는 효과가 있다.According to the natural frequency control apparatus for a wind turbine according to the present invention, the frequency control module moves the upper and lower portions of the tower by wind power and changes the natural frequency of the wind turbine generator to prevent resonance of the wind turbine generator.

즉, 진동수 조절모듈의 위치를 변동시켜 고유진동수를 공진점 아래로 떨어뜨려 풍력발전기의 운전속도 범위 내에서 공진이 발생하는 것을 방지하게 된다.That is, the position of the frequency adjustment module is varied to drop the natural frequency below the resonance point, thereby preventing resonance from occurring within the operating speed range of the wind turbine generator.

본 발명은 풍력을 이용하여 작동하기에 진동수 조절모듈이 불규칙적으로 상하 이동을 하게 된다. 적은 확률로 고유 진동수와 바람의 진동수가 일치하더라도 계속해서 불규칙적으로 변경되기에 공진 현상을 회피할 수 있다.In the present invention, the frequency control module operates irregularly up and down to operate using wind power. The resonance phenomenon can be avoided because the resonance frequency is continuously changed irregularly even if the natural frequency and the wind frequency coincide with each other with a small probability.

또한, 분할 및 조립구조로 형성되어 있어 기설치된 풍력발전기의 타워에 설치가 용이하여 설치 및 운영이 편리하다.Also, since it is formed by the split and assembled structure, it is easy to install in the tower of the installed wind turbine generator, so that it is convenient to install and operate.

도 1은 종래의 기술에 따른 풍력발전기를 도시한 도면이다.
도 2는 본 발명에 따른 풍력발전기의 고유진동수 조절장치를 분해 도시한 사시도이다.
도 3은 도 2의 결합상태를 도시한 사시도이다.
도 4는 본 발명에 따른 풍력발전기의 고유진동수 조절장치의 사용상태도이다.1 is a view showing a conventional wind turbine generator.
FIG. 2 is a perspective view explaining an apparatus for adjusting a natural frequency of a wind turbine according to the present invention.
FIG. 3 is a perspective view showing the coupled state of FIG. 2. FIG.
4 is a use state diagram of the natural frequency control device of the wind power generator according to the present invention.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 풍력발전기의 고유진동수 조절장치를 분해 도시한 사시도이며, 도 3은 도 2의 결합상태를 도시한 사시도이고, 도 4는 본 발명에 따른 풍력발전기의 고유진동수 조절장치의 사용상태도이다.FIG. 2 is a perspective view explaining an apparatus for adjusting a natural frequency of a wind turbine according to the present invention, FIG. 3 is a perspective view illustrating a coupled state of FIG. 2, It is the state of use.

도 2 내지 도 4에 도시한 바와 같이, 본 발명에 따른 풍력발전기의 고유진동수 조절장치(A)는, 풍력발전기 타워(T)의 외주면을 감싸도록 고정 설치되며, 수나사(110)가 형성된 베이스모듈(100) 및 상기 베이스 모듈(100)의 수나사(110)와 나사 체결되며, 풍력에 의해 회전하는 진동수 조절모듈(200)로 구성된다.2 to 4, the natural frequency control device A of the wind turbine according to the present invention is fixedly installed to surround the outer circumferential surface of the wind power generator tower T, and includes a base module And a frequency control module 200 screwed to the male screw 110 of the base module 100 and rotated by wind force.

이때, 상기 진동수 조절모듈(200)의 높이와 회전에 의해 타워(T)의 고유진동수가 변경된다. 상기 진동수 조절모듈(200) 내측으로 상기 수나사(110)에 대응하는 암나사(210)가 구비된다.At this time, the natural frequency of the tower T is changed by the height and rotation of the frequency adjustment module 200. And a female screw 210 corresponding to the male screw 110 is provided inside the frequency adjustment module 200.

즉, 상기 진동수 조절모듈(200)에 의해 타워(T)에 부가질량을 부여하거나, 위치를 변동시켜 고유진동수를 공진점 아래로 떨어트려 풍력발전기의 운전속도 범위 내에서 공진이 발생하는 것을 방지하게 된다.That is, the frequency adjustment module 200 imparts additional mass to the tower T or changes its position to drop the natural frequency below the resonance point, thereby preventing resonance from occurring within the operating speed range of the wind turbine generator .

구체적으로, 상기 베이스모듈(100)은 반원형 단면을 가지도록 제1베이스(100a)와 제2베이스(100b)로 구분 형성되며, 상기 제1,2베이스(100a,100b)에는 제1나사체결공(101)이 각각 형성된다.Specifically, the base module 100 is divided into a first base 100a and a second base 100b so as to have a semicircular cross section, and the first and second bases 100a and 100b are provided with a first screw- (101) are formed.

즉, 제1나사체결공(101)에 볼트와 너트를 체결하여 상기 베이스모듈(100)을 타워(T)에 설치할 수 있게 된다.That is, the base module 100 can be installed on the tower T by fastening bolts and nuts to the first screw fastening holes 101.

또한, 상기 진동수 조절모듈(200)은, 부채꼴 단면을 가지는 본체(201)와 상기 본체(201)에서 연장된 반구형 풍배(202)가 구비된 제1 내지 제4회전부재(200a,200b,200c,200d)로 구분 형성된다.The frequency adjusting module 200 includes first to fourth rotating members 200a, 200b, 200c, 200c, 200d having a main body 201 having a fan-shaped cross section and a hemispherical windshield 202 extending from the main body 201, 200d.

그리고, 상기 제1 내지 제4회전부재(200a,200b,200c,200d)에는 제2나사체결공(203)이 각각 형성되어 볼트와 너트를 체결하여 상기 진동수 조절모듈(200)을 완성한다.A second screw fastening hole 203 is formed in each of the first to fourth rotary members 200a, 200b, 200c, and 200d to fasten the bolt and the nut to complete the frequency adjustment module 200.

이때, 상기 2개로 구분된 베이스 모듈(100)과, 4개로 구분된 진동수 조절모듈(200) 및 제1,2나사 체결공(101,203)에 의해 분할 및 조립구조로 형성되어 있어 기설치된 풍력발전기의 타워에 설치가 용이하여 설치 및 운영이 편리하다.In this case, the base module 100 divided into two, the frequency control module 200 divided into four, and the first and second screw fastening holes 101 and 203 are formed in a divided and assembled structure, Easy installation and operation due to easy installation on the tower.

도 4는 본 발명의 사용상태를 도시한 것으로서, 도 4의 (a)는 본 발명의 고유 진동수 조절장치(A)를 장착 후 평상시의 상태이며, 도 4의 (b)는 바람이 불어 풍력을 이용하여 진동수 조절모듈(200)이 회전하며 상승하는 모습이며, 도 4의 (c)는 풍속이 높아 진동수 조절모듈(200)이 최대 높이 까지 올라간 모습이다.FIG. 4 shows the state of use of the present invention. FIG. 4 (a) shows a state after the natural frequency adjusting apparatus A of the present invention is mounted, and FIG. 4 (b) FIG. 4 (c) shows a state in which the frequency adjustment module 200 is raised to a maximum height because the wind speed is high.

즉, 본 발명은 풍력의 힘을 받아 진동수 조절모듈(200)이 회전하여 수나사(110)를 따라 상승하며, 바람이 불지 않아 진동수 조절모듈(200)이 돌아가지 않게 되면 중력의 영향을 받아 반대로 회전하며 하강하게 된다.That is, according to the present invention, when the vibration control module 200 is rotated due to the wind force, the vibration control module 200 is rotated and rises along the male screw 110, .

이때, 진동수 조절모듈의 위치가 변해 타워(T)의 고유진동수가 변경된다.At this time, the position of the frequency adjustment module is changed, and the natural frequency of the tower T is changed.

본 발명에 따르면, 진동수 조절모듈(200)이 풍력에 의해 타워(T)의 상부와 하부를 이동하며 풍력발전기의 고유진동수를 변경하여 풍력발전기의 공진을 방지하는 효과가 있다.According to the present invention, the frequency adjustment module 200 moves the upper and lower portions of the tower T by wind power and changes the natural frequency of the wind power generator to prevent the resonance of the wind power generator.

즉, 진동수 조절모듈(200)의 위치를 변동시켜 고유진동수를 공진점 아래로 떨어뜨려 풍력발전기의 운전속도 범위 내에서 공진이 발생하는 것을 방지하게 된다.That is, the position of the frequency adjustment module 200 is varied to drop the natural frequency below the resonance point, thereby preventing resonance from occurring within the operating speed range of the wind turbine generator.

또한, 본 발명은 풍력을 이용하여 작동하기에 진동수 조절모듈이 불규칙적으로 상하 이동을 하게 된다. 적은 확률로 고유 진동수와 바람의 진동수가 일치하더라도 계속해서 불규칙적으로 변경되기에 공진 현상을 회피할 수 있다.In addition, in the present invention, the frequency control module irregularly moves upward and downward to operate using wind power. The resonance phenomenon can be avoided because the resonance frequency is continuously changed irregularly even if the natural frequency and the wind frequency coincide with each other with a small probability.

이상, 본 발명의 바람직한 실시 예에 대하여 상세히 설명하였으나, 본 발명의 기술적 범위는 전술한 실시 예에 한정되지 않고 특허청구범위에 의하여 해석되어야 할 것이다. 이때, 이 기술분야에서 통상의 지식을 습득한 자라면, 본 발명의 범위에서 벗어나지 않으면서도 많은 수정과 변형이 가능함을 고려해야 할 것이다.Although the preferred embodiments of the present invention have been described in detail, the technical scope of the present invention is not limited to the above-described embodiments, but should be construed according to the claims. It will be understood by those skilled in the art that many modifications and variations are possible without departing from the scope of the present invention.

위의 설명에서는 풍력발전기용 타워에 한정하여 설명하였지만 이를 특별히 한정하는 것은 아니며, 진동이 발생하는 다양한 형태의 기둥에 모두 적용 가능함을 밝혀둔다.Although the above description has been made only for a tower for a wind power generator, it is not limited thereto, and it is noted that the present invention is applicable to various types of columns in which vibration occurs.

A - 풍력발전기의 고유진동수 조절장치
100 - 베이스 모듈
200 - 진동수 조절모듈A - Natural frequency control device of wind turbine generator
100 - Base module
200 - Frequency adjustment module

Claims (3)

풍력발전기 타워의 외주면을 감싸도록 고정 설치되며, 수나사가 형성된 베이스모듈; 및 상기 베이스 모듈의 수나사와 나사 체결되며, 풍력에 의해 회전하는 진동 조절모듈;을 포함하되,
상기 진동 조절모듈의 높이에 따라 타워의 고유진동수가 변경되고,
상기 베이스모듈은 반원형 단면을 가지도록 제1베이스와 제2베이스로 구분 형성되며, 상기 제1,2베이스에는 제1나사체결공이 각각 형성되며,
상기 진동 조절모듈은,
부채꼴 단면을 가지는 본체와 상기 본체에서 연장된 반구형 풍배가 구비된 제1 내지 제4회전부재로 구분 형성되며,
상기 제1 내지 제4회전부재에는 제2나사체결공이 각각 형성된 것을 특징으로 하는 풍력발전기의 고유진동수 조절장치.
A base module fixedly installed to surround the outer circumferential surface of the wind power generator tower and having a male thread; And a vibration control module screwed with the male screw of the base module and rotated by wind force,
The natural frequency of the tower is changed according to the height of the vibration control module,
The base module is divided into a first base and a second base so as to have a semicircular cross section, and first and second fastening holes are respectively formed in the first and second bases,
The vibration control module includes:
The first to fourth rotary members having a main body having a fan-shaped cross section and a hemispherical windblower extending from the main body,
And a second screw fastening hole is formed in each of the first to fourth rotary members.
삭제delete 삭제delete
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118273881A (en) * 2024-06-04 2024-07-02 太原理工大学 Spherical wind driven generator with wind gathering shell

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3186849B2 (en) * 1992-08-03 2001-07-11 沖電気工業株式会社 Modification information transmission method of information channel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3186849B2 (en) * 1992-08-03 2001-07-11 沖電気工業株式会社 Modification information transmission method of information channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118273881A (en) * 2024-06-04 2024-07-02 太原理工大学 Spherical wind driven generator with wind gathering shell

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