WO2021162349A1 - Générateur éolien à rendement de production d'énergie amélioré - Google Patents

Générateur éolien à rendement de production d'énergie amélioré Download PDF

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Publication number
WO2021162349A1
WO2021162349A1 PCT/KR2021/001507 KR2021001507W WO2021162349A1 WO 2021162349 A1 WO2021162349 A1 WO 2021162349A1 KR 2021001507 W KR2021001507 W KR 2021001507W WO 2021162349 A1 WO2021162349 A1 WO 2021162349A1
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WO
WIPO (PCT)
Prior art keywords
shaft
power generation
rotating shaft
driving motor
generation efficiency
Prior art date
Application number
PCT/KR2021/001507
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English (en)
Korean (ko)
Inventor
장병철
Original Assignee
주식회사 호풍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 호풍 filed Critical 주식회사 호풍
Publication of WO2021162349A1 publication Critical patent/WO2021162349A1/fr

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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 
    • F03D7/06—Controlling wind motors  the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • 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
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/212—Rotors for wind turbines with vertical axis of the Darrieus type
    • 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
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/213—Rotors for wind turbines with vertical axis of the Savonius type
    • 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
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/101—Purpose of the control system to control rotational speed (n)
    • F05B2270/1012—Purpose of the control system to control rotational speed (n) to prevent underspeed
    • 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
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present invention relates to a wind power generator with improved power generation efficiency, and more particularly, to a wind power generator with improved power generation efficiency that can effectively improve power generation efficiency even when the wind speed is less than a rated wind speed.
  • the small vertical axis wind power generator is characterized by not requiring yaw control (control to move the center of the rotating shaft according to the wind direction). have.
  • the representative blade shape of the vertical axis drag type is the Savonius type, which has a large starting torque but a low rotational speed and has an output coefficient of about 15-20% in the area around 1 of the tip speed ratio.
  • the drag-type blades are relatively easy to design in a way that generates electricity while receiving the drag force of the wind, but the other side of the blade, which is 50% of the rotational area, is opposite to the static torque generated when one side of the blade is pushed by the wind. Since reverse torque is generated while rotating facing each other, high-speed rotation is not possible, so there is a problem in that the overall output coefficient is low.
  • the representative blade shape of the vertical axis lift type is the Darius type, and although it takes time to reach a certain rotation speed due to the small initial starting torque, it has an output coefficient of 30% or more in the area around 5 of the tip speed ratio.
  • This type of lift blade type has an excellent output coefficient at the rated operating point where the wind speed and rotation speed are sufficient, but it is difficult to start or There is a problem in that it takes time to complete the rotation.
  • the hybrid blade for solving such a problem is a method devised for the purpose of simultaneously implementing the high output coefficient of the lift type and the excellent maneuverability of the drag type, KR10-1269109B1 (hereinafter referred to as 'Patent Document 0001') and JP2009- 047030A (hereinafter referred to as 'Patent Document 0002'), etc. have been proposed.
  • Patent Document 0001 relates to a building-integrated wind power generator, comprising: a rotation module including a central shaft, an internal Savonius rotation part connected to both ends of the central shaft, and an external Darius rotation part; an induction module connected to both ends of the central shaft to support the rotation module and to induce an airflow to the rotation module; and a power generation module that generates power using the rotational force generated by the rotation module.
  • Patent document 0002 relates to a wind power generator, which includes a windmill part by a combination of a Darius rotor and a Savonius rotor, and aims to improve the durability of the installation part by eliminating metal fatigue concentrating on one part of the Savonius rotor do it with
  • Patent Documents 0001 and 0002 have excellent starting characteristics, but when the wind speed is less than the rated wind speed, there is a problem in that the power generation efficiency is greatly reduced.
  • the power generation output of the power generation unit increases as the number of rotations increases, but as shown in FIG. 1, the correlation between the generation output and the number of rotations of the power generation unit is not proportional and forms a convex curve in the rotation speed direction. There is a problem in that the power generation efficiency of the power generation unit is greatly reduced.
  • An object of the present invention for solving such conventional problems is to provide a wind power generator with improved power generation efficiency that can improve power generation efficiency when the wind speed is less than the rated wind speed.
  • a driving motor disposed at an upper end of the rotating shaft to rotate the rotating shaft
  • One motor fixing member having a lower portion fixed to one side of the fixed shaft and an upper portion fixed to one side of the driving motor, and another motor fixing member having a lower portion fixed to the other side of the fixed shaft and an upper portion fixed to the other side of the driving motor
  • a motor fixing unit consisting of;
  • a voltage detection unit detecting an output voltage of the power generation unit
  • a wind power generator with improved power generation efficiency comprising a; when the voltage detected by the voltage detection unit is within a preset voltage range, a control unit for driving the driving motor.
  • the shaft of the driving motor is coupled to the upper end of the rotating shaft by a one-way rotating part.
  • the one-way rotating part may be formed of a one-way bearing.
  • the one-way rotating part is fixedly installed on the upper end of the rotating shaft and has a lower gear part having a plurality of ratchet gears formed on an upper surface at a predetermined angle, and a plurality of lower gear parts installed on the shaft of the driving motor and on the lower surface. It may be configured to include; an upper gear portion provided with a plurality of ratchet gears formed in a shape symmetrical with the ratchet gear of the. In this case, it is preferable that the upper gear part is spline-coupled to the shaft of the driving motor.
  • the Savonius-type blade is rotationally coupled to the rotating shaft by a one-way rotating part.
  • the driving motor accelerates the rotation speed of the started rotating shaft when the wind speed blows below the rated wind speed so that the rated output is output, thereby greatly improving the power generation efficiency even when the wind speed is less than the rated wind speed There is an effect that can make it happen.
  • 1 is a graph schematically showing the correlation between power generation output and rotation speed
  • FIG. 2 is a front view schematically showing a wind power generator with improved power generation efficiency, which is an embodiment of the present invention
  • 3 and 4 are front views schematically showing another example of a one-way bearing
  • FIG. 5 is a front view schematically showing an elastic member for elastically supporting the upper gear part installed on the shaft of the drive motor;
  • FIGS. 6 and 7 are front views schematically showing a state in which the Savonius-type blade is rotationally coupled to the rotating shaft by a one-way rotating part, respectively;
  • FIG. 8 is a front view schematically showing an elastic member for elastically supporting the upper gear part installed on the rotating shaft;
  • FIG. 9 is a block diagram schematically showing a control state of a control unit.
  • FIG. 2 is a front view schematically showing a wind power generator with improved power generation efficiency, which is an embodiment of the present invention.
  • the wind power generator with improved power generation efficiency includes a fixed shaft 10 , a rotating shaft 20 , a Darius-type blade 30 , a Savonius-type blade 40 , It comprises a power generation unit 50, a driving motor 60, a motor fixing unit 70, a voltage detection unit and a control unit.
  • the fixed shaft 10 is installed perpendicular to the ground.
  • the rotating shaft 20 is rotationally coupled to the upper portion of the fixed shaft 10 .
  • the rotational coupling structure is not particularly limited such that the rotational shaft 20 may be rotationally coupled to the fixed shaft 10 by a method such as sleeve coupling.
  • the Darius-type blade 30 may be fixedly installed on the outer surface of the rotating shaft 20 in various ways, such as bolting.
  • the Savonius-type blade 40 may be coupled to the middle portion of the rotation shaft 20 .
  • the power generation unit 50 is installed between the rotating shaft 20 and the fixed shaft 10 .
  • the driving motor 60 is disposed at the upper end of the rotation shaft 20 positioned in the upper direction of the Savonius-type blade 40 to rotate the rotation shaft 20 .
  • a fixing plate 610 to the lower portion of the driving motor 60 may be horizontally fixed in various ways such as bolt fixing, welding fixing, and the like.
  • the shaft 601 of the driving motor 60 exposed by a predetermined length in the lower direction of the fixing plate 610 may be coupled to the upper end of the rotating shaft 20 by the one-way rotating unit 100 .
  • 3 and 4 are front views schematically showing another example of the one-way bearing.
  • the one-way rotating unit 100 may be formed of a one-way bearing, but is not limited thereto.
  • the one-way rotating unit 100 is a lower gear It may be configured in various configurations, such as being configured to include the part 101 and the upper gear part 102 .
  • the lower gear unit 101 may be fixedly installed at an upper end portion of the rotation shaft 20 positioned in the upper direction of the Savonius-type blade 40 .
  • a plurality of ratchet gears 101a of a certain angle are formed on the upper surface of the lower gear part 101, which can be formed in various shapes, such as an annular shape, at regular intervals along the periphery of the upper surface of the lower gear part 101.
  • the plurality of ratchet gears 101a of the lower gear unit 101 may be formed in various shapes, such as, for example, a right-angled triangle shape with a right angle protruding in the upper direction of the lower gear unit 101 by a predetermined length.
  • the upper gear unit 102 may be installed on the shaft 601 of the driving motor 60 .
  • a plurality of ratchet gears 102a of a certain angle are formed on the lower surface of the upper gear part 102, which can be formed in various shapes such as an annular shape, at regular intervals along the circumference of the lower surface of the upper gear part 101.
  • the plurality of ratchet gears 102a of the upper gear unit 102 are formed in various shapes such as, for example, a right-angled triangular shape in which one angle is formed to protrude in the lower direction of the upper gear unit 102 by a predetermined length.
  • the plurality of ratchet gears 101a of the lower gear unit 101 and the plurality of ratchet gears 101a may be point-symmetrically engaged with the plurality of ratchet gears 101a of the lower gear unit 101 .
  • the rotational force of the shaft 601 of the drive motor 60 is transmitted to the rotation shaft 20 through the one-way rotation unit 100 and the Savonius together with the rotation shaft 20 .
  • the mold blade 40 may be rotated.
  • the Savonius-type blade 40 may be rotated by receiving the rotational force of the shaft 601 of the driving motor 60 , but may also be idling by the wind speed.
  • FIG. 4 In order to prevent the rotational force of the Savonius-type blade 40 from being transmitted to the shaft 601 of the driving motor 60 while the Savonius-type blade 40 is idling by the wind speed, FIG. 4 As shown in , the upper gear unit 102 may be spline-coupled to the shaft 601 of the driving motor 60 to be liftable.
  • the upper gear unit 102 spline-coupled to the shaft 601 of the driving motor 60 is coupled to the shaft 601 of the driving motor 60 while the Savonius-type blade 40 is idling by wind speed. ), the meshing state of the plurality of ratchet gears 102a of the upper gear unit 102 and the plurality of ratchet gears 101a of the lower gear unit 101 may be intermittently released by upward and downward movement of the .
  • FIG. 5 is a front view schematically illustrating an elastic member for elastically supporting an upper gear part installed on a shaft of a driving motor.
  • the upper gear part 102 which is provided to be liftable on the shaft 601 of the drive motor 60 , may be lowered by its own weight to be engaged with the lower gear part 101 , but the upper gear part 102 may be engaged with the lower gear part 101 . ) and the lower gear unit 101 to be more easily meshed, the upper gear unit 102 is elastically moved downward of the shaft 601 of the driving motor 60 as shown in FIG. 5 .
  • An elastic member 200 for supporting may be provided.
  • a support plate 102b extending horizontally for a predetermined length in the outward direction of the upper gear unit 102 may be formed on an outer circumferential surface of the upper gear unit 102 .
  • the elastic member 200 is a fixed plate of the driving motor 60 . It may be made of various types, such as a spring accommodated between the 610 and the support plate (102b).
  • the motor fixing part 70 is composed of a motor fixing member 710 on one side and a motor fixing member 720 on the other side.
  • the lower portion of the one side motor fixing member 710 may be fixed to one side of the fixing shaft 10 in various ways such as bolt fixing, welding fixing, and the like.
  • the upper portion of the one-side motor fixing member 710 may be fixed to one side of the fixing plate 610 fixed to the lower portion of the driving motor 60 in various ways, such as bolt fixing or welding fixing.
  • the lower portion of the other motor fixing member 720 may be fixed to the other side of the fixing shaft 10 in various ways, such as bolt fixing or welding fixing.
  • the upper portion of the other motor fixing member 720 may be fixed to the other side of the fixing plate 610 fixed to the lower portion of the driving motor 60 in various ways such as bolt fixing or welding fixing.
  • FIGS. 6 and 7 are front views schematically showing a state in which the Savonius-type blade is rotationally coupled to the rotating shaft by a one-way rotating unit, respectively.
  • the Savonius-type blade 40 is rotated by a one-way rotating part 100 on the rotating shaft 20 located in the lower direction of the Savonius-type blade 40 as shown in FIG. 6 . can be combined.
  • the one-way rotating part 100 for rotationally coupling the Savonius-type blade 40 to the rotating shaft 20 located in the lower direction of the Savonius-type blade 40 is, for example, a one-way bearing.
  • the present invention is not necessarily limited thereto, and as shown in FIG. 7 , it may have various configurations such as including the lower gear unit 101 and the upper gear unit 102 .
  • the lower gear unit 101 may be fixedly installed on the upper end of the rotation shaft 20 positioned in the lower direction of the Savonius-type blade 40 .
  • the upper gear unit 102 may be spline-coupled to the shaft 401 formed in the lower center of the Savonius-type blade 40 to be liftable.
  • FIG. 8 is a front view schematically showing an elastic member for elastically supporting an upper gear part installed in the rotation shaft.
  • the shaft 401 formed in the lower center of the Savonius-type blade 40 and the upper part of the upper gear part 102 are accommodated inside the elastic member 200 as shown in FIG. 8 .
  • the upper gear portion 102 is elastically supported in the lower direction of the Savonius-type blade 40,
  • the elastic member 200 which may be formed of various types such as a spring for maintaining the meshing state between the upper gear unit 102 and the lower gear unit 101 may be provided.
  • FIG. 9 is a block diagram schematically showing a control state of a control unit.
  • the driving motor 60 accelerates the rotation speed of the rotating shaft 20 to output the rated output, thereby greatly improving the power generation efficiency even when the wind speed is less than the rated wind speed.
  • the voltage detection unit 80 may detect the output voltage of the power generation unit 50 .
  • control unit 90 may control the driving motor 60 by comparing the voltage detected by the voltage detection unit 80 with a voltage range preset in the control unit 90 .
  • control unit 90 supplies power from the power supply unit 910 to the driving motor 60 to supply the driving motor (60) can be driven.
  • the driving motor 60 may be stopped under the control of the control unit 90 .
  • the driving motor accelerates the rotation speed of the started rotating shaft when the wind speed blows below the rated wind speed so that the rated output is output, thereby greatly improving the power generation efficiency even when the wind speed is less than the rated wind speed There is an effect that can make it happen.

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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

La présente invention concerne un générateur éolien à rendement de production d'énergie amélioré et, en particulier, permet d'améliorer efficacement le rendement de production d'énergie même si des vitesses de vent sont inférieures à une vitesse de vent nominale.
PCT/KR2021/001507 2020-02-10 2021-02-05 Générateur éolien à rendement de production d'énergie amélioré WO2021162349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0015389 2020-02-10
KR1020200015389A KR102232726B1 (ko) 2020-02-10 2020-02-10 발전효율이 향상된 풍력발전장치

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WO2021162349A1 true WO2021162349A1 (fr) 2021-08-19

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PCT/KR2021/001507 WO2021162349A1 (fr) 2020-02-10 2021-02-05 Générateur éolien à rendement de production d'énergie amélioré

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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN113153619A (zh) * 2021-04-20 2021-07-23 李丹丹 一种防护性较高的风力发电机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003027497A1 (fr) * 2001-09-25 2003-04-03 Fumiro Kaneda Équipement pour éolienne verticale à trois pales
JP2008005663A (ja) * 2006-06-26 2008-01-10 Matsushita Electric Ind Co Ltd 風力発電装置
JP2009047030A (ja) * 2007-08-16 2009-03-05 E & E:Kk 風力発電装置
KR200453826Y1 (ko) * 2011-01-06 2011-05-27 이세정 환기팬 풍력발전장치
JP2017053304A (ja) * 2015-09-11 2017-03-16 株式会社グローバルエナジー 風力発電装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073096B1 (ko) * 2009-10-05 2011-10-12 윤양일 수직축형 다리우스 풍차
KR101269109B1 (ko) 2011-08-04 2013-05-31 (주)하이에너지 코리아 건물일체형 풍력발전장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003027497A1 (fr) * 2001-09-25 2003-04-03 Fumiro Kaneda Équipement pour éolienne verticale à trois pales
JP2008005663A (ja) * 2006-06-26 2008-01-10 Matsushita Electric Ind Co Ltd 風力発電装置
JP2009047030A (ja) * 2007-08-16 2009-03-05 E & E:Kk 風力発電装置
KR200453826Y1 (ko) * 2011-01-06 2011-05-27 이세정 환기팬 풍력발전장치
JP2017053304A (ja) * 2015-09-11 2017-03-16 株式会社グローバルエナジー 風力発電装置

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