WO2013095033A1 - 나셀 펜스를 갖는 풍력발전기 - Google Patents
나셀 펜스를 갖는 풍력발전기 Download PDFInfo
- Publication number
- WO2013095033A1 WO2013095033A1 PCT/KR2012/011248 KR2012011248W WO2013095033A1 WO 2013095033 A1 WO2013095033 A1 WO 2013095033A1 KR 2012011248 W KR2012011248 W KR 2012011248W WO 2013095033 A1 WO2013095033 A1 WO 2013095033A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nacelle
- fence
- wind turbine
- generator
- wind
- Prior art date
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F03D15/00—Transmission of mechanical power
-
- 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
- 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
- F03D15/00—Transmission of mechanical power
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
-
- 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
- F05B2240/10—Stators
- F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
-
- 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
- F05B2260/97—Reducing windage losses
-
- 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
Definitions
- the present invention relates to a wind generator for producing electrical energy by wind, and more particularly to a wind power generator having a nacelle fence to install a fence structure on the nacelle of the horizontal axis wind turbine and improve aerodynamic performance.
- Wind power generators that generate electrical energy using the power of wind are being researched as an alternative energy source due to the depletion of natural resources such as oil, coal, and natural gas due to the development of industry and population growth.
- Wind power generation is a technology that converts the kinetic energy of air flow into mechanical energy and then produces electrical energy again. It uses eco-friendly wind as an energy source, and it is eco-friendly without cost. Doing.
- the conventional wind power generator is rotatably installed on the top of a high-rise tower 1 standing on the ground so as to rotate the nacelle 2 supporting the blades 3.
- an accelerator, a generator, and a control device are provided inside the nacelle 2, so that the rotational force of the rotor blades 3 passes through the hub 4 to the generator through the main shaft.
- the aerodynamic performance is reduced due to the vortices occurring at the tip 3a and the root 3b of the blade 3. Since the reduction in the aerodynamic performance of the blade 3 results in a decrease in the power generation efficiency of the wind generator, development of a technique for increasing the aerodynamic performance of the blade 3 is required.
- an object of the present invention is to provide a wind power generator having a nacelle fence having a fence along the air flow direction in the nacelle to minimize the vortex generated at the downstream end of the blade Is in.
- a wind turbine comprising a tower standing on the ground, a nacelle installed on the top of the tower, and a rotor blade rotatably installed on one side of the nacelle, wherein the wind generator includes: At least one nacelle fence extending outward from a peripheral surface of the nacelle along a direction of air flow; It includes.
- the nacelle fence characterized in that the cross section is formed to be inclined at a predetermined angle with the rotation axis of the rotor blade, the cross section is formed inclined in the opposite direction of the blade rotation from the upstream end of the fence to the fence downstream end.
- a plurality of nacelle fences are provided radially around a rotation axis of the blade.
- the nacelle fence is characterized in that the angle formed between the vertical section of the fence upstream end and the nacelle is vertical, and the angle between the longitudinal section of the nacelle fence and the nacelle gradually decreases toward the downstream end of the fence.
- the nacelle fence characterized in that the predetermined distance apart in the downstream direction of the rotor blade is formed on the upstream side of the tower.
- Wind turbine generator having a nacelle fence of the present invention by the configuration as described above has the effect of reducing the vortices generated in the lower end of the rotating blade, improve the aerodynamic performance of the blade and further increase the power generation efficiency of the wind turbine generator .
- FIG. 1 is a perspective view of a conventional wind power generator
- FIG. 2 is a plan view of a conventional wind power generator
- FIG. 3 is a perspective view of a wind turbine generator of the present invention
- FIG. 4 is a plan view of a wind turbine of the present invention
- Figure 6 is a wind turbine performance test graph of the prior art and the present invention
- the wind turbine generator having a nacelle fence of the present invention includes a tower 10, a nacelle 20, rotor blades 30 and 40, and a nacelle fence 50.
- Tower 10 may be formed in the vertical direction.
- the lower end of the tower 10 is fixed to the ground, the upper portion may be formed with a rotating portion (not shown).
- the rotary part may be coupled to the lower surface of the nacelle 20.
- the rotating part rotates the nacelle 20 in a horizontal direction, that is, plays a role of pitch movement.
- the configuration of the tower 10 may be used for the support of the wind generator is commonly used.
- the nacelle 20 may be coupled to the top of the tower 10.
- Nacelle 20 is the body configuration of the wind turbine.
- the nacelle 20 may be hinged to the tower 10 to be rotatable in the transverse direction to optimize the position of the rotor blades 30 and 40 according to the direction of the wind.
- the nacelle 20 may be coupled to one side so that the rotor blades 30 and 40 are rotatable.
- Inside the nacelle 20 may be provided with a speed increaser and a generator.
- the nacelle 20 may be configured such that the rotational force of the rotor blades 30 and 40 reaches the generator through the rotation shaft.
- the rotor blades 30 and 40 may include a hub 40 connected to the rotation axis of the nacelle 20 and a blade 30 radially connected about the hub 40.
- a plurality of blades 30 may be coupled to the hub 40. Although three blades 30 are shown in the drawings, the number of blades 30 is not limited to three, and the number may be added or subtracted according to the capacity of the generator and the purpose of the wind turbine.
- the rotor blades 30 and 40 are applied to the rotor blades commonly used in wind power generators, and thus detailed description thereof will be omitted.
- the present invention improves the aerodynamic performance of the rotor blades 30 and 40 by minimizing vortices that may occur on the downstream side of the rotor blades 30 and 40 by the rotation of the rotor blades 30 and 40.
- the core configuration of Nacelle Fence (50) will be described in detail.
- the direction in which air is introduced is defined upstream, and the direction in which air is outflow is defined as downstream.
- Nacelle fence 50 is made of a plate body with a length.
- the nacelle fence 50 may be integrally formed with the nacelle 20 on the peripheral surface of the nacelle 20, or a lower end thereof may be coupled to the peripheral surface of the nacelle 20.
- the nacelle fence 50 may be formed in the nacelle 20 along the air flow direction.
- the nacelle fence 50 is formed at a predetermined distance from the rotor blades 30 and 40 in the downstream direction. The separation distance is determined differently according to the power generation capacity of the wind turbine, the number of blades, the length of the blades.
- a plurality of nacelle fences 50 may be radially installed on the nacelle 20 about a rotation axis, and three nacelle fences 50 are illustrated in the drawing, but the number of nacelle fences 50 is three. The number may be added or subtracted according to the capacity of the generator and the use of the wind turbine.
- the vortex (Vortex) that can occur on the downstream side of the rotor blades (30, 40) by laminar flow (Laminar flow) to minimize the vortex (Vortex) by the rotor blade (30, 40) improves aerodynamic performance.
- the nacelle fence 50 of the present invention further has the following characteristic configuration to more effectively reduce the vortex.
- the nacelle fence 50 may have a cross section inclined at a predetermined angle with the rotation axes of the rotor blades 30 and 40. That is, a line connecting the fence upstream end 51 and the fence downstream end 52 of the nacelle fence 50 may be formed at an angle with the rotation axis.
- the slope of the nacelle fence 50 is determined differently according to the generating capacity of the wind turbine, the number of blades, and the length of the blades.
- the cross section of the nacelle fence 50 may be formed to be inclined at a predetermined angle in the opposite direction of rotation of the rotor blades 30 and 40 toward the fence downstream end 52 from the fence upstream end 51 of the nacelle fence 50.
- the longitudinal section of the nacelle fence 50 is vertical at the fence upstream end 51 of the nacelle fence 50, but the angle formed with the nacelle 20 is vertical, but the rotor blade ( The angle formed with the nacelle 30 in the opposite direction of rotation of the 30 and 40 may be formed to gradually decrease.
- the angle formed with the nacelle 20 may be 45 degrees in the fence downstream end 52.
- FIG. 6 shows a performance test graph according to the wind turbine of the present invention.
- the horizontal axis of the graph shown represents the azimuth angle according to the position of the blade 30.
- the blade 30 was defined as 0 when the upper portion of the hub 40 was perpendicular to the ground, and the blade 30 was defined as 180 when the blade 30 was positioned below the vertical surface of the hub 40.
- the vertical axis of the graph shown represents the power efficiency.
- the generation efficiency was calculated by dividing the generator's generation in wind.
- the experiment was divided into three groups: a wind turbine including a nacelle fence of the present invention, a conventional wind turbine including a tower, and a towerless wind turbine.
- the curve located at the top is the numerical curve of the wind turbine including the nacelle fence of the present invention
- the curve at the middle is the curve of the conventional wind turbine including the tower
- the line at the bottom is the tower without the tower. Is the numerical curve of.
- the towerless wind turbine has the lowest power generation efficiency due to the blade vortex, and the conventional wind turbine including the tower reduces the vortex of the blade to a certain degree so that the power generation efficiency is higher than that of the towerless wind turbine. high.
- the wind power generator including the nacelle fence of the present invention proved that the generation efficiency is superior to the other two groups by minimizing the vortex of the blade through the nacelle fence.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims (6)
- 지면상에 세워지는 타워와, 상기 타워의 상단에 설치되는 나셀과, 상기 나셀의 일측에 회전 가능하도록 설치되는 로터블레이드를 포함하는 풍력발전기에 있어서,상기 풍력발전기는,공기 유동 방향을 따라 상기 나셀의 둘레면 외측으로 연장 형성되는 적어도 하나 이상의 나셀 펜스;를 포함하는, 나셀 펜스를 갖는 풍력발전기.
- 제 1항에 있어서,상기 나셀 펜스는,횡단면이 로터블레이드의 회전축과 일정 각도 기울어져 형성되는 것을 특징으로 하는 나셀 펜스를 갖는 풍력발전기.
- 제 2항에 있어서,상기 나셀 펜스는,횡 단면이 펜스 상류단에서 펜스 하류단으로 갈수록 블레이드 회전 반대 방향으로 기울어져 형성되는 것을 특징으로 하는 나셀 펜스를 갖는 풍력발전기.
- 제 1항에 있어서,상기 나셀 펜스는,상기 블레이드의 회전축을 중심으로 다수 개가 방사상으로 구비되는 것을 특징으로 하는 나셀 펜스를 갖는 풍력발전기.
- 제 1항에 있어서,상기 나셀 펜스는,펜스 상류단 종단면과 나셀이 이루는 각도가 수직이며, 펜스 하류단으로 갈수록 나셀 펜스의 종단면과 나셀이 이루는 각도가 점점 감소하도록 형성되는 것을 특징으로 하는 나셀 펜스를 갖는 풍력발전기.
- 제 1항에 있어서,상기 나셀 펜스는,상기 로터블레이드의 하류 방향으로 일정거리 이격 형성되되 상기 타워의 상류측에 형성되는 것을 특징으로 하는 나셀 펜스를 갖는 풍력발전기.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/368,004 US9683547B2 (en) | 2011-12-23 | 2012-12-21 | Wind turbine having nacelle fence |
DE112012005432.6T DE112012005432T5 (de) | 2011-12-23 | 2012-12-21 | Windturbine mit Gondelzaun |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110140703A KR101179277B1 (ko) | 2011-12-23 | 2011-12-23 | 나셀 펜스를 갖는 풍력발전기 |
KR10-2011-0140703 | 2011-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013095033A1 true WO2013095033A1 (ko) | 2013-06-27 |
Family
ID=47073693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2012/011248 WO2013095033A1 (ko) | 2011-12-23 | 2012-12-21 | 나셀 펜스를 갖는 풍력발전기 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9683547B2 (ko) |
KR (1) | KR101179277B1 (ko) |
DE (1) | DE112012005432T5 (ko) |
WO (1) | WO2013095033A1 (ko) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11300003B2 (en) | 2012-10-23 | 2022-04-12 | General Electric Company | Unducted thrust producing system |
EP2912270B1 (en) * | 2012-10-23 | 2023-04-26 | General Electric Company | Unducted thrust producing system |
WO2014104978A1 (en) * | 2012-12-28 | 2014-07-03 | Nanyang Technological University | A turbine |
US11391298B2 (en) | 2015-10-07 | 2022-07-19 | General Electric Company | Engine having variable pitch outlet guide vanes |
EP3565967B1 (en) * | 2017-02-15 | 2021-03-17 | Siemens Gamesa Renewable Energy A/S | Building structure comprising a vortex generator to reduce induced vibrations |
WO2019028492A1 (en) * | 2017-08-09 | 2019-02-14 | Eamon Bergin | GENERATOR ACTUATED BY THE FLOTTABILITY OF A GAS |
DE102018100511A1 (de) | 2018-01-11 | 2019-07-11 | Mehmet Güncü | Rotorblatt für Windkraftanlagen |
US20210108597A1 (en) * | 2019-10-15 | 2021-04-15 | General Electric Company | Propulsion system architecture |
US11492918B1 (en) | 2021-09-03 | 2022-11-08 | General Electric Company | Gas turbine engine with third stream |
US11834995B2 (en) | 2022-03-29 | 2023-12-05 | General Electric Company | Air-to-air heat exchanger potential in gas turbine engines |
US11834954B2 (en) | 2022-04-11 | 2023-12-05 | General Electric Company | Gas turbine engine with third stream |
US11834992B2 (en) | 2022-04-27 | 2023-12-05 | General Electric Company | Heat exchanger capacity for one or more heat exchangers associated with an accessory gearbox of a turbofan engine |
US11680530B1 (en) | 2022-04-27 | 2023-06-20 | General Electric Company | Heat exchanger capacity for one or more heat exchangers associated with a power gearbox of a turbofan engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200244751Y1 (ko) * | 2001-01-05 | 2001-09-25 | 김형돈 | 풍력발전기 |
KR20050090295A (ko) * | 2004-03-08 | 2005-09-13 | 원인호 | 병합발전 하우스와 시스템 |
US7214029B2 (en) * | 2004-07-01 | 2007-05-08 | Richter Donald L | Laminar air turbine |
KR20100096575A (ko) * | 2009-02-24 | 2010-09-02 | 이용인 | 가변피치제어식 다익형 풍차 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7345376B2 (en) * | 2004-11-30 | 2008-03-18 | Distributed Energy Systems Corporation | Passively cooled direct drive wind turbine |
TWM279736U (en) * | 2005-07-14 | 2005-11-01 | Jetpo Technology Inc | Improved mechanism of a wind power generator |
US20110008164A1 (en) * | 2007-03-23 | 2011-01-13 | Flodesign Wind Turbine Corporation | Wind turbine |
GB0908355D0 (en) * | 2009-05-15 | 2009-06-24 | Bailey Ralph Peter S | Wind turbine diffuser |
US8033794B2 (en) * | 2009-05-26 | 2011-10-11 | Jia-Yuan Lee | Wind turbine |
US8461713B2 (en) * | 2009-06-22 | 2013-06-11 | Johann Quincy Sammy | Adaptive control ducted compound wind turbine |
US8106528B2 (en) * | 2009-07-08 | 2012-01-31 | Houly Co., Ltd. | Horizontal axis wind turbine with rotatable tower |
-
2011
- 2011-12-23 KR KR1020110140703A patent/KR101179277B1/ko not_active IP Right Cessation
-
2012
- 2012-12-21 US US14/368,004 patent/US9683547B2/en not_active Expired - Fee Related
- 2012-12-21 DE DE112012005432.6T patent/DE112012005432T5/de not_active Withdrawn
- 2012-12-21 WO PCT/KR2012/011248 patent/WO2013095033A1/ko active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200244751Y1 (ko) * | 2001-01-05 | 2001-09-25 | 김형돈 | 풍력발전기 |
KR20050090295A (ko) * | 2004-03-08 | 2005-09-13 | 원인호 | 병합발전 하우스와 시스템 |
US7214029B2 (en) * | 2004-07-01 | 2007-05-08 | Richter Donald L | Laminar air turbine |
KR20100096575A (ko) * | 2009-02-24 | 2010-09-02 | 이용인 | 가변피치제어식 다익형 풍차 |
Also Published As
Publication number | Publication date |
---|---|
US9683547B2 (en) | 2017-06-20 |
DE112012005432T5 (de) | 2014-09-04 |
KR101179277B1 (ko) | 2012-09-03 |
US20150003993A1 (en) | 2015-01-01 |
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