WO2013065927A9 - Turbine éolienne pour vitesse de vent faible, et système de turbine éolienne utilisant celle-ci - Google Patents

Turbine éolienne pour vitesse de vent faible, et système de turbine éolienne utilisant celle-ci Download PDF

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Publication number
WO2013065927A9
WO2013065927A9 PCT/KR2012/005227 KR2012005227W WO2013065927A9 WO 2013065927 A9 WO2013065927 A9 WO 2013065927A9 KR 2012005227 W KR2012005227 W KR 2012005227W WO 2013065927 A9 WO2013065927 A9 WO 2013065927A9
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WIPO (PCT)
Prior art keywords
type blade
wind turbine
blade
wind speed
turbine generator
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PCT/KR2012/005227
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English (en)
Korean (ko)
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WO2013065927A1 (fr
Inventor
이영원
Original Assignee
주식회사 한림메카트로닉스
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Publication of WO2013065927A1 publication Critical patent/WO2013065927A1/fr
Publication of WO2013065927A9 publication Critical patent/WO2013065927A9/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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • 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 
    • F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having a plurality of rotors
    • 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 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
    • 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/214—Rotors for wind turbines with vertical axis of the Musgrove or "H"-type
    • 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 low wind speed wind turbine generator and a wind power generation system using the same, and more particularly, to increase the rotation moment of the blade even in a low wind and maximize the circumferential ratio at the same time the blade rotation starts to improve the efficiency of the rotational power It relates to a low wind speed wind power generating device generating power by increasing and a low wind speed wind power generation system using the same.
  • wind power generation has sufficient potential, but wind power generation is unlike the existing generation due to the variability in the wind speed and the low wind speed (2 ⁇ 6m / sec small wind) of Korea.
  • the role of self-generators (capacity generation) in capacity credit and the effective capacity of resources to cope with net reserve reserves cannot be completely replaced. Therefore, the Korean-style development of economic and efficient wind turbines for distributed generation networks is urgent.
  • the annual average wind speed is 2-6m / sec, but the wind turbine generator for wind speeds of 12m / sec or more, which is less than 20 days a year, is installed with over-capacity generators that are about 4 times larger than large ones. In the case of small and medium-sized, too much waste to be installed uneconomically installed by the over-capacity generator.
  • the capacity of each wind turbine generator of Vestas, the world's leading wind turbine maker, and other well-known manufacturers is being released in accordance with more than 12m / sec.However, according to the Korea Meteorological Agency data, the annual average wind speed of Korea is 2 ⁇ 6m / sec. It cannot be productive.
  • Busan and Jeju which have high average wind speed, do not have a constant wind direction, which leads to a lot of yawing, and Daegwallyeong shows that west wind is the mainstream. There is no wind turbine for power generation in Korea.
  • the present invention has been made to solve the conventional problems
  • An object of the present invention is to provide a drag-type blade to maximize the starting torque even with a small wind on the inside, to form an overlap area between the drag blade pieces to increase the rotation moment, the air foil type blade to increase the rotational acceleration on the outer edge It is to provide a low wind speed wind power generator and a low wind speed wind power generation system using the same to increase the efficiency of the rotation power by maximizing the speed ratio at the same time the blade starts to rotate.
  • Low wind speed wind turbine generator provided to achieve the above object is formed in the shape of a long cylindrical pole and supported in a rotatable state to generate a rotational force;
  • the shaft coupling portion having a long groove in the cover plate coupled to the central shaft is formed in the center, and formed in the same rotation direction by forming an overlap region based on the shaft coupling portion in order to increase the rotation moment,
  • the overlap ratio is formed by dividing the semi-circle diameter (d) by subtracting the shaft diameter (e ') of the central axis from the overlapping X-axis spacing (e) between the semicircles when the central axis, which is the central axis, is composed of the shaft.
  • a semi-circular annular drag type blade formed by dividing the overlapping X-axis spacing e between semi-circles by a semi-circle diameter d when the central axis is supported by the drag type blade without a shaft;
  • An air foil type blade connected to an outer circumferential surface of the drag type blade by a support and rotating integrally with the drag type blade to maximize a peripheral speed ratio;
  • a power generation module positioned on an extension line of the center axis to generate power by receiving rotational driving force of the center axis.
  • TSR Torque Speed Ratio, ⁇ , Main Speed Ratio
  • Blade Rotation RPM Blade Rotation RPM and Output Factor (No Load)
  • No. Power Coefficient Efficiency
  • TSR Torp Speed Ratio, ⁇ , circumferential speed ratio, blade tip speed and wind speed ratio
  • R is the blade rotor radius
  • ⁇ is the rotational angular velocity (rad / s)
  • N is the blade rotation rpm
  • V is the wind speed at 4.0 m / sec.
  • Table 4 below shows the extension angle ( ⁇ ) of the drag type blade semicircle from the center point.
  • Table 5 compares the results obtained by experimenting the Y axis spacing (a) between the drag blade semicircles in units of -0.05, 0.00, 0.05, 0.10, 0.20, 0.25, and 0.30 of the drag blade semicircle diameter (d). Table.
  • Table 6 shows the overlap ratios of the drag type blade overlap areas: 0%, 5%, 10%, 13%, 16%, 22%, 25%, 28%, 32%, 34%, 40%, 50%, It is the table which compared the result obtained by the experiment by a unit, respectively.
  • Table 7 shows the blade thickness ratios of the airfoil blades by 9.0%, 10.0%, 15.0%, 15.5%, 17.5%, 18.0%, 23.0%, 25.0%, 30.0%, 32.5%, and 35.0%. It is the table which compared each obtained result.
  • Table 8 is a table comparing the results obtained by experimenting the angle of attack of the air-foil blades in units of 1 ° within -10 ° to 30 °.
  • the output angle Cp increases by 0.028 from -10 ° at 30 ° extension from the center of the semicircle to the extension angle ⁇ of the outward end of the drag blade.
  • the Y-axis spacing (a) between the semicircles of the drag blades is -5/110 (-0.05) to 1/5 (0.25), so that the output coefficient (Cp) is more efficient than 0.210, and the overlap of the drag blades is more efficient.
  • the overlap ratio of the area ranges from 5% to 34% and the output coefficient (Cp) is 0.164 or more.In particular, the overlap coefficient of 25% in the overlap area increases the output coefficient (Cp) by 44.0% compared to the case where there is no overlap (overlap rate 0).
  • the air foil type blade has an output coefficient (Cp) of 0.179 or more within the blade thickness ratio of 17.5% to 32.5%, and the air foil type blade has an output coefficient (Cp) of 0.190 or more within a range of 3 ° to 19 °. You can check it. When these five geometrical parameters are combined with each of the detailed results obtained with the best output coefficient ( Cp , efficiency) and produced into a low wind speed wind power generation system, the output coefficient ( Cp , efficiency) is higher than the experimental results of the reduced model. ) Can come out.
  • the circumferential speed ratio of the drag type blade is 1.0
  • the moment for rotating the blade no longer occurs.
  • the drag type blade diameter Id is 20% to the total blade diameter Td.
  • the drag type blade diameter (Id) is 0.8m and the drag type blade diameter (Id) is 20m of the total blade diameter (Td) and the drag type blade is Substituting the rpm calculation at the maximum circumferential speed ratio of 1.0 into [Equation 1], the circumferential speed ratio of the air foil-type blade diameter (Td) 4m located at the end is also 5.0 to 286 rpm.
  • the drag type blade rotation (Id) is 20% of the total blade diameter (Td)
  • the drag type blade rotation is 286rpm
  • the air foil type blade rotation speed is 5.0
  • the air foil type blade rotation is 286rpm
  • the air foil type blade speed ratio is Up to 5.0 does not interfere with rotation from the drag blade.
  • the drag blade diameter (Id) is made within 20% to 46% of the total blade diameter (Td), the outward end of the drag blade extends from the semicircle,
  • the extension angle [theta] is effective in extending from -3 [deg.] To 35 [deg.] From the center point of the semicircle.
  • the drag type blade is characterized in that the Y-axis spacing (a) between the semicircle is formed in the interval of -5 / 110 to 1/5 of the drag type semi-circle diameter (d).
  • the overlap ratio of the overlap area of the drag type blade is divided into a case in which the central axis of the central shaft is configured as a shaft and a case in which the central axis is supported by the drag type blade and configured without the shaft.
  • the overlap ratio of the overlap region in the case where the central axis is composed of a shaft is divided by the semicircle diameter d by subtracting the shaft diameter e of the central axis from the overlapping X-axis interval e between the semicircles. It is preferably formed within 5% to 34%, and the overlap ratio of the overlap area in the case where the central axis is supported by the drag type blade and is configured without a shaft as shown in FIG. ) Is formed by dividing the semicircle diameter (d), it is preferably made within 5 to 34%.
  • the overlap ratio of the overlap region in the case where the shaft diameter e 'of the central axis is 0 (zero) in FIG. 2 (a) is the same as the overlap ratio in FIG. 2 (b), and the wind is the drag blade piece 123.
  • the output coefficient Cp is 0.162 or more and there is no overlap at the overlap ratio 25%. It can be seen that the output coefficient (Cp) increases by 44.0% from (overlap ratio 0).
  • the air foil-type blade is formed within the blade thickness ratio of 17.5% to 32.5% divided by the wingspan length to maximize the rotational acceleration, the angle of attack of the air foil-type blade within 3 ° to 19 ° There is a feature that is efficient in what is formed.
  • the air foil-type blade is provided in plurality, and provided with a cover plate for covering the upper end and the lower end of the drag type blade can be more firmly supported, connected to the cover plate at a predetermined interval and the drag type blade and Characterized in that it is provided to rotate integrally.
  • the outer circumferential surface support 131 of the drag type blade needs a certain thickness for solid support, and the cross section is formed in the shape of an air foil so as not to interfere with the rotation of the blade due to the thickness of the support 131, thereby preventing the rotational power. It is characterized in that it helps to increase the speed ratio.
  • the drag type blade and the air foil type blade is characterized in that it is formed in an upright form parallel to the central axis.
  • the drag type blade forms a multi-stage block in the longitudinal direction, and the large block unit is 60 with respect to neighboring large block units (a, b, c, d). It is formed in a shape that is twisted at an angle to ° 180 °, characterized in that the air foil-shaped blade is formed in an upright form parallel to the central axis.
  • the drag type blade forms a multi-stage of small blocks in the longitudinal direction, and the small blocks are neighboring small blocks (a, b, c, d, e, f). ..) twisted at a predetermined angle within the range of 1 ° to 19 ° is formed in a twisted shape, the air foil-shaped blade is characterized in that it is formed in an upright form parallel to the central axis.
  • the drag type blade forms a multi-stage of large blocks in the longitudinal direction, and the large blocks are 60 with respect to neighboring large blocks (a, b, c, d). It is formed in the form of the angle of 180 to 180 degrees, and the air foil-shaped blade is formed in a multi-stage of small block unit in the longitudinal direction, the small block unit is a neighboring small block unit (a, b, c, d, e , f ...) is twisted at a predetermined angle within the range of 1 ° to 19 °, characterized in that formed in a twisted form.
  • the drag type blades and the air foil type blades each constitute a multi-stage of small block units in the longitudinal direction, and the small block units are adjacent small block units (a, b, c). , d, e, f ...) is twisted at a predetermined angle within the range of 1 ° to 19 °, characterized in that formed in a twisted form.
  • the drag type blade and the air foil type blade may be made of a transparent body, and the LED is installed inside the transparent body or the opaque body of the drag type blade to the air foil type blade, so that the advertisement and the landmark effect are preferred.
  • the low wind speed wind turbine generator may be installed at any one of an angle other than vertical and horizontal, including vertical, horizontal, and inclined.
  • it is a good position to install horizontally, by lowering the height of the tower to the roof of the building has a great advantage in cost reduction and after-sales (A / S), as shown in Figure 14 (d) in the horizontal unit installation and expansion indefinitely This is possible.
  • the wind turbine generator is formed in the shape of an elongated cylindrical pole and supported in a rotatable state to generate a rotation force;
  • the semicircular ring is formed in the center of the cover plate coupled to the central shaft is formed in the center of the central portion, and formed in the same rotational direction by forming an overlap ratio of the overlap area based on the shaft coupling portion to increase the rotation moment
  • the drag type blade unit and the air foil type blade unit connected to the outer circumferential surface of the drag type blade unit to maximize the circumferential speed ratio form a segment of a small block unit, and the segments are stacked blade;
  • a power generation module positioned on an extension line of the central axis to generate power by receiving rotational driving force of the central axis, thereby increasing the rotation moment of the blade even in a low wind and increasing the main speed ratio at the same time as the blade rotation operation starts. It is characterized by maximizing and increasing the efficiency of rotational power to generate power.
  • the segment is twisted at a predetermined angle within the range of 1 ° to 19 ° with respect to the neighboring segment is made of a twisted form or an upright form.
  • the drag type blade unit has a diameter within 20% to 46% of the total blade diameter Td, and the outward end thereof extends from the semicircle, and the extension angle ⁇ is -3 ° from the center point of the semicircle. It extends within 35 °, Y-axis spacing (a) between the semi-circle is characterized in that consisting of -5 / 110 to 1/5 intervals of the drag-type blade unit semi-circle diameter (d).
  • the overlap ratio of the overlap area of the drag type blade is divided into a case in which the central axis of the central shaft is configured as a shaft and a case in which the central axis is supported by the drag type blade and configured without the shaft.
  • the overlap ratio of the overlap region in the case where the central axis is composed of a shaft is divided by the semicircle diameter d by subtracting the shaft diameter e of the central axis from the overlapping X-axis interval e between the semicircles. It is preferably formed within 5% to 34%, and the overlap ratio of the overlap area in the case where the central axis is supported by the drag type blade and is configured without a shaft as shown in FIG. ) Is formed by dividing the semicircle diameter (d), preferably 5% to 34%.
  • the overlap ratio of the overlap area when the shaft diameter e 'of the central axis is 0 (zero) in FIG. 2 (a) is the same as the overlap area of FIG. 2 (b), and the wind is the drag blade piece 123. It is preferable that the overlap ratio of the overlap region of the wind passing through the drag blade piece 124 facing and passing through is the same within 5% to 34%.
  • the air foil type blade unit is characterized in that the blade thickness ratio is made within 17.5% to 32.5%, the angle of attack is made within 3 ° to 19 °.
  • the support 131 is characterized in that the cross section is made of an air foil shape.
  • the low wind speed wind power generation system has a semicircular annular drag type blade which is fixed in the same rotational direction by forming an overlap ratio of an overlap region, and an air foil connected to the outer circumferential surface of the drag type blade to maximize the circumferential speed ratio.
  • a plurality of low wind speed the wind turbine generator having a configuration according to any one of claims 1 to 21 including a blade;
  • a central control center for monitoring the presence or absence of abnormalities in the low wind speed wind turbine generator, an operation state, and the like;
  • a control unit for controlling the operation of the low wind speed wind turbine generator according to the control command of the central control center and reporting the state of the low wind speed wind turbine generator to the central control center;
  • a storage battery which charges electrical energy produced by the low wind speed wind turbine and regenerates the electricity when necessary. Characterized in that it comprises a.
  • the driving part and the segments that can change the angle of the segment in the center of the segment are twisted.
  • a sensor capable of detecting an angle is provided, and the control unit controls the driving of the segment driving unit according to the angle of the segment transmitted from the central control center to change the overall shape of the blade from an upright shape to a twisted shape, or in a twisted shape. It is characterized by changing to an upright form.
  • Wind power generation, regardless of the location or location can be installed at a low cost economical, environmentally friendly and very efficient wind power can be performed.
  • the blade rotor radius is shorter than the horizontal axis wind turbine, so the noise is low. Since it does not require a high technology system or device, it can be installed at a low cost. Therefore, a large number of wind turbines can be installed at the same investment cost as before. Therefore, it is possible to maximize the amount of power generation, to accurately and quickly establish the future development direction of wind power in low wind speed countries, and to create economical and practical green energy.
  • FIG. 1 is a perspective view showing a first embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention.
  • FIG. 2 is a view for explaining the overlap ratio of the overlap region of the drag type blade in the low wind speed the wind turbine generator according to the present invention.
  • FIG 3 is a view for explaining the diameter of the drag type blade in the low wind speed the wind turbine generator according to the present invention.
  • Figure 4 (a) ⁇ (c) is a view for explaining the angle of the wing thickness ratio and the angle of attack of the air foil type blade in the low wind speed wind turbine generator according to the present invention.
  • FIG. 5 is a view showing that a plurality of air foil-type blades in the low wind speed the wind turbine generator according to the present invention.
  • Figure 6 is a view showing that the air-foil blade is detachable to the support in the low wind speed the wind turbine generator according to the present invention.
  • FIG. 7 is a view showing that the support is made of an air foil shape in the low wind speed the wind turbine generator according to the present invention.
  • FIG 8 is a front view showing a second embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention.
  • FIG. 9 (a) is a view for explaining a state in which the drag type blade (four-stage large block multi-stage) of FIG. 8 is viewed at angles of 0 °, 90 °, 180 °, and 270 °
  • FIGS. 9 (b) and (c) ) Is a view for explaining the state of the drag type blade consisting of a three-stage, two-stage large block multi-stage viewed from 0 °, 90 °, 180 °, 270 ° angle.
  • FIG. 10 (a) to (c) is a view showing that a plurality of air foil type blades (two, three, four) in the second embodiment of FIG.
  • FIG 11 is a front view showing a third embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention.
  • FIG. 12 is a front view showing a fourth embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention.
  • FIG. 13 is a front view showing a fifth embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention.
  • 14 to 16 is a view showing a state in which the embodiments of the low wind speed the wind turbine generator in accordance with an aspect of the present invention installed horizontally, vertically and inclined.
  • 17 is a view showing the direction and action of the wind in a low wind speed the wind turbine generator in accordance with an aspect of the present invention.
  • FIG. 18 is a perspective view for explaining a low wind speed the wind turbine generator according to another aspect of the present invention.
  • 19 is a view schematically showing the configuration of a low wind speed wind power generation system according to the present invention.
  • FIG. 20 is a view illustrating a segment driver and a sensor in the low wind speed wind power generation system of FIG. 19.
  • FIG. 1 is a perspective view showing a first embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention
  • Figure 2 is the overlap ratio of the overlap area of the drag type blade in the low wind turbine according to the present invention is the center 3 is a view for explaining the overlap ratio of the overlap area when the central axis of the shaft is composed of a shaft and the central axis is supported by a drag type blade and is configured without a shaft.
  • FIG. 3 is a drag type blade diameter (Id) and an air foil type.
  • Figure 4 is a view for explaining the blade diameter (Td)
  • Figure 4 is a view for explaining the angle of attack and blade thickness ratio of the air-foil blade in the low wind speed wind turbine generator according to the present invention.
  • the central shaft 110 is divided into a case in which a central axis is configured by a shaft and a case in which the central axis is supported by a drag type blade and configured without a shaft.
  • the center shaft is installed in a rotatable state to generate a rotational force for the development of the wind turbine.
  • the rotational force due to the power generation or the rotational force due to the external wind acts directly, it is preferable to be firmly installed so as not to be shaken or jeopardized by the magnitude and magnitude of the external wind.
  • the drag type blade 120 has a shaft coupling portion 122 having an elongated groove 121 formed at the center thereof so as to be coupled to the center shaft 110, and a pair of drag blade pieces 123 and 124 having a semicircle shape are rotated. In order to generate the moment, the overlap ratio of the overlap area is formed based on the shaft coupling part 122 and fixed in the same rotation direction. 2, one end of the drag blade piece 123 has a predetermined distance from one side of the shaft coupling portion 122, and the other end of the drag blade piece 123 has the other side of the shaft coupling portion 122.
  • One end of another drag blade piece 124 has a predetermined distance from the other side of the shaft coupling portion 122 and the other end is disposed toward one side of the shaft coupling portion 122,
  • One end of the pair of drag blade pieces 123 and 124 is disposed and fixed to have an overlap region in which the pair of drag blade pieces 123 and 124 overlap with respect to the shaft coupling portion 122.
  • the overlap ratio of the overlap area of the drag type blade 120 is the shaft diameter (e) of the central axis in the overlapping X-axis spacing (e) between the semi-circle when the central axis is a central axis as shown in Figure 2 (a)
  • the value obtained by subtracting a) is formed by dividing the semicircle diameter (d), and it is preferably within 5% to 34%, and as shown in FIG. 2 (b), the center axis is supported by the drag type blade and is formed without a shaft.
  • the overlap ratio is formed by dividing the overlapping X-axis spacing (e) between the semicircles by the semicircle diameter (d), preferably 5% to 34%.
  • the overlap ratio of the overlap region in the case where the shaft diameter e 'of the central axis is 0 (zero) in FIG. 2 (a) is the same as the overlap ratio in FIG. 2 (b), and the wind is the drag blade piece 123. It is preferable that the overlap ratio of the wind passing through the drag blade piece 124 facing and passing through is the same within 5% to 34%.
  • the drag type blade 120 has an outward end portion extending at an angle from the semicircle, wherein the extension angle ⁇ is preferably extended within -3 ° to 35 °.
  • the Y-axis spacing a between the semi-circles of the drag blade pieces 123 and 124 in the drag type blade 120 is preferably made to be -5/110 to 1/5 of the semicircle diameter d.
  • the diameter Id of the drag type blade 120 is preferably designed to be within 20% to 46% of the total blade diameter Td.
  • the main speed ratio of the drag type blade 120 is 1, the moment for rotating the blade beyond that does not occur, so that the rotor speed of the air foil type blade at the main speed ratio 1 or more, so that the overall blade diameter (air Diameter to the end of the foil).
  • the drag type blade 120 thus designed is responsible for the starting torque of the wind power generation.
  • Air foil-type blade 130 has a flat cross-sectional shape is one side of the oval shape and the other side is made of a plane wing shape that becomes thinner toward the end portion, it is connected to the outer peripheral surfaces of the drag blade pieces (123, 124) by the support 131.
  • the air foil-type blade 130 generates a lifting force that causes the wing of the plane to float in the sky, thereby increasing the rotational acceleration as much as possible (Wing Thickness Ratio). Is preferably formed within 17.5% to 32.5%. 4 (b) and (c), the angle of attack of the air foil blade 130 is preferably made within 3 ° to 19 °.
  • the wing thickness ratio is the thickness of the wing divided by the length of the shipboard, and the angle of attack (Angle of Attack) is the angle between the air lines (Chord Lin, protest line) of the air foil.
  • the air foil blade 130 is composed of a plurality of the drag type blade 120 outside.
  • the rotational torque decreases than when it is composed of four, but the manufacturing cost of the blade can be lowered by injection of the mold, and in the case of four, the rotational torque is increased than the configuration of two or three. Since the overall weight is heavy and the manufacturing cost can be increased when designing with twist structure, it should be designed considering the power generation effect and the payback period (depreciation) by rotating torque.
  • the air foil blade 130 may be detachably attached to the support 131.
  • the air foil blade 130 is bolted to the support 131 to be detachable, it is very easy to replace and repair the air foil blade 130, and only the broken air foil blade 130 is simple. It can be replaced and used to extend the lifespan of wind power generators and reduce maintenance costs.
  • the support 131 supporting the drag type blade 120 and the air foil type blade 130 needs a certain thickness for solid support, but due to the thickness of the support 131. It is preferable that the shape of the support 131 be an air foil in order to further increase the rotation moment without hindering the rotation.
  • the power generation module 140 is positioned on an extension line of the center shaft 110 to generate electric power by receiving the rotational driving force of the center shaft 110, and may be referred to as a kind of generator.
  • the low wind speed wind turbine generator configured as described above generates a rotational force on the drag type blade 120 while riding the inside of the inner drag type blade piece 123 and passes through the drag type blade piece 123. As the wind passes through the drag-type blade piece 124 facing the semicircular overlap region, it further generates a rotation moment of up to 44%. Subsequently, the air foil-type blade 130 generates lift and generates rotational force of 1 or more of the peripheral speed ratio.
  • the low wind speed the wind turbine generator can be divided into various embodiments according to the overall form.
  • the first embodiment is the most basic form of the low wind speed wind turbine, and the drag type blade 120 and the air foil type blade 130 are upright in parallel with the center shaft 110. Is made of.
  • FIG. 8 is a front view showing a second embodiment of a low wind speed the wind turbine generator in accordance with an aspect of the present invention
  • Figure 9 (a) is the drag type blade (four stage large block multi-stage) of Figure 8 0 °
  • 90 9 (b) and 9 (c) show drag type blades consisting of three-stage and two-stage large block multi-stages at 0 °, 90 °, and 180 °.
  • FIG. 10 is a view for explaining a state viewed from an angle of 270 °
  • FIGS. 10 (a) to 10 (c) are views showing a plurality of air foil type blades in the second embodiment of FIG. 8.
  • the drag type blade 120 forms a block unit that is divided by a predetermined interval in the longitudinal direction, and forms a large block unit that is equally divided about four lengths.
  • the large block unit has a shape that is twisted at an angle of 60 ° to 180 ° with respect to neighboring large block units (a, b, c, d).
  • the air foil-type blade 130 is formed in an upright form parallel to the central axis 110. As shown in Figure 10 (a) ⁇ (c) may be provided with a plurality of air foil type blade 130 of the upright form. As shown in the drawing, the air foil blade 130 includes cover plates 125, 126, 127, 128, and 129 that cover the upper and lower ends of the drag type blade 120, and the air foil blades are provided on the support plate 131 on the cover plates 125, 126, 127, 128, and 129. It is preferable to have a configuration that is connected by being rotated integrally with the drag type blade (120).
  • FIG 11 is a front view showing a third embodiment of a low wind speed the wind turbine generator according to an aspect of the present invention
  • Figure 12 is a front view showing a fourth embodiment of the low wind speed wind turbine generator according to the aspect of the present invention
  • 13 is a front view illustrating a fifth embodiment of a low wind speed wind turbine generator according to an aspect of the present invention.
  • the drag type blade 120 forms a multi-stage of small blocks in the longitudinal direction, and the small blocks are adjacent small block units a, b, c, d, e, f ..) is twisted at a predetermined angle within the range of 1 ° to 19 ° to form a twisted shape, the air-foil blade 130 is formed in an upright form parallel to the central axis 110.
  • the drag type blade 120 has a multi-stage of large blocks in the longitudinal direction as in the second embodiment, and the large blocks are neighboring large blocks (a, b). , c, d) is formed in a shape that is rotated at an angle of 60 ° to 180 °, the air-foil blade 130 forms a multi-stage of small blocks divided into predetermined intervals in the longitudinal direction, the small block unit is adjacent small It is twisted at an angle within the range of 1 ° to 19 ° with respect to the block unit (a, b, c, d, e, f ...) to form a twist shape.
  • both the drag type blade 120 and the air foil type blade 130 form a multi-stage of small block units which are separated by predetermined intervals in the longitudinal direction, and the small block units are adjacent to each other. It is twisted at an angle within the range of 1 ° to 19 ° with respect to the small block units (a, b, c, d, e, f ).
  • FIGS. 14 (a) to (e) illustrate the present invention.
  • the first to fifth embodiments of the present invention are shown to be installed horizontally
  • Figures 15 (a) to (k) shows a state in which the representative embodiments are installed vertically
  • Figures 16 (a) shows a state in which the embodiments are installed inclined.
  • the blade module consisting of the drag type blade 120 and the air foil type blade 130 can be stacked in one or a plurality, the one or more stacked blade modules are vertical, It can be suitably installed according to the installation environment such as horizontal type, slanted type at an oblique angle, or other angles, and can be applied wherever it is to generate electricity by wind.
  • the drag type blade 120 and the air foil type blade 130 may be formed of a transparent body, and the LED is installed inside or outside the drag type blade 120 to the air foil type blade at night or on a foggy day. It may include a warning light function to indicate the installation position of the wind power generation system.
  • starting torque is applied to the drag type blade 120 while riding inside the drag type blade 120 formed in an upright or twisted form. And generating maximum maneuverability, and further generating a rotation moment of up to 44% while the wind passing through the drag type blade piece 123 passes through the drag type blade piece 124 facing the semicircular overlap region. As the drag type blade 120 rotates, lift force is generated in the air foil type blade 130 to maximize the peripheral speed ratio.
  • FIG. 18 is a perspective view for explaining a low wind speed the wind turbine generator according to another aspect of the present invention.
  • Low wind speed wind turbine generator 200 in another aspect is formed in the shape of a long cylindrical pole and supported in a rotatable state to generate a rotational force 210;
  • the shaft coupling portion 221 having a long groove is formed at the center of the cover plates 125, 126, 127, 128 and 129 coupled to the central shaft 210, and in order to increase the rotation moment,
  • Semi-circular annular drag type blade unit 222 formed in the same rotation direction by forming an overlap ratio, and air connected to the outer circumferential surface of the drag type blade unit 222 by the support 131 to maximize the circumferential speed ratio
  • a blade 220 in which a foil-shaped blade unit 223 forms a segment of a small block unit and the segments are stacked;
  • Located on the extension line of the center axis 210 includes a power generation module 230 for generating power under the rotational driving force of the center axis 210.
  • the center shaft 210 and the power generation module 230 are the same as the description of one aspect. Therefore, the description of the center shaft 210 and the power generation module 230 will be omitted.
  • the drag type blade unit 222 and the air foil type blade unit 223 form segments of small blocks.
  • the segment is twisted at a predetermined angle within a range of 1 ° to 19 ° with respect to a neighboring segment, and has a twisted shape or an upright shape.
  • the drag type blade unit 222 has a diameter within 20% to 46% of the total blade diameter Td, and the outward end thereof extends from the semicircle, and the extension angle ⁇ is -3 from the center point of the semicircle.
  • the Y-axis spacing a between the semicircles extends from -5/110 to 1/5 of the semicircle diameter d of the drag type blade unit 222.
  • the overlap ratio of the overlap area of the drag type blade unit 222 is divided into a case in which the central axis of the central shaft is configured as a shaft and a case in which the central axis is supported by the drag type blade and configured without the shaft.
  • the overlap ratio of the overlap region in the case where the central axis is composed of a shaft is divided by the semicircle diameter d by subtracting the shaft diameter e of the central axis from the overlapping X-axis interval e between the semicircles. It is preferably formed within 5% to 34%, and the overlap ratio of the overlap area in the case where the central axis is supported by the drag type blade and is configured without a shaft as shown in FIG. ) Is formed by dividing the semicircle diameter (d), preferably 5% to 34%.
  • the overlap ratio of the overlap area when the shaft diameter e 'of the central axis is 0 (zero) in FIG. 2 (a) is the same as the overlap area of FIG. 2 (b), and the wind is the drag blade piece 123. It is preferable that the overlap ratio of the overlap region of the wind passing through the drag blade piece 124 facing and passing through is the same within 5% to 34%.
  • the air foil type blade unit 223 is provided with a wing portion of the air foil shape, and the support 131 for connecting the wing portion to the drag type blade unit.
  • the air foil type blade unit 223 is preferably made of the wing thickness ratio within 17.5% to 32.5% so that the wing of the plane to lift the principle that floats the plane in the sky to maximize rotational acceleration, the wing It is preferable that the angle of attack is in the range of 3 ° to 19 °.
  • the blade 220 having a twisted shape generates the maximum starting torque and maneuvering force in the drag type blade unit 222 while riding the inside of the drag type blade unit 222 formed in a twisted wind.
  • the drag type blade unit 222 is rotated out of the downward direction to increase the rotation moment of the drag type blade unit 222, the air foil type blade unit 223 generates a lift force to maximize the peripheral speed ratio.
  • the low wind speed wind turbine generator of the present invention has an upright or twisted structure, and adopts a drag type blade on the inside, thereby improving aerodynamic characteristics, in which a starting torque for rotating the blades of the wind turbine from a stationary state is large and the rotation moment becomes strong,
  • a drag type blade on the inside By adopting an air foil type blade on the outside to increase the rotational acceleration more than the circumferential speed ratio 1, it generates rotational power even in the small wind regardless of the direction of the wind, and effectively generates wind power, and installs at low cost regardless of place or location. It is possible to perform wind power generation which is economical, environmentally friendly and very efficient.
  • FIG. 19 is a view schematically illustrating a configuration of a low wind speed wind power generation system using a low wind speed wind power generator according to the present invention
  • FIG. 20 is a view illustrating a segment driver and a sensor in the low wind speed wind power generation system of FIG. 19. to be.
  • the low wind speed wind power generation system includes a low wind speed wind power generator 300, a central control center 400, a control unit 500, and a storage battery 600.
  • the low wind speed wind turbine 300 has a semicircular annular drag type blade that is fixed in the same rotational direction by forming an overlap ratio of the overlap area, and an air foil type that is connected to the outer circumferential surface of the drag type blade to maximize the peripheral speed ratio.
  • At least one low wind speed wind turbine generator selected from the low wind speed wind turbine generator 100 according to the above aspect including the blade and the low wind speed wind turbine generator 200 according to the other aspect is installed.
  • a drag type blade and an air foil type blade are formed as segments 310, and when the stack is formed in an upright or twisted form, a driving unit capable of changing the angle of the segment in the center of the segment A 320 is provided, and a sensor 330 capable of detecting a twist angle (between angles) between the segments 310 is provided.
  • the central control center 400 monitors the presence or absence of abnormalities of wind speed generators, operation status, operation status, and the like and remotely controls them.
  • the angle of the segment is transmitted to the control unit so that the segment 310 stacked in the upright form according to the direction of the wind is changed into the twisted form, and the segment 310 stacked in the twist form is changed into the upright form.
  • the control unit 500 is provided in the low wind speed wind turbine 300 to control the operation of the low wind speed wind turbine 300 according to the control command of the central control center 400 and the state of the low wind speed wind turbine 300 Report to the central control center (400).
  • the driving of the segment drive unit 320 according to the angle of the segment transmitted from the central control center 400 to change the overall shape of the blade from the upright form to the twisted form, or from the twisted form to the upright form. That is, when the angle of the segment is transmitted from the central control center 400, the driving unit 320 of each segment to change the angle of each segment 310, the sensor 330 for detecting the changed angle of the segment 310 The angle of the segment 310 is controlled by stopping the driving of the driving unit 320 in response to the signal.
  • the battery 600 collects and charges electrical energy produced by the low wind speed wind turbines 300 and regenerates the electricity when necessary to supply electricity to the driving unit 320, the sensor 330, and the controller 400 of the segment. do.
  • the low wind speed wind power generation system of the present invention includes a central control center 400 for remotely controlling a plurality of low wind speed wind power generation units 300 installed therein, and thus the state of the plurality of low wind speed wind power generation units 300.
  • a central control center 400 for remotely controlling a plurality of low wind speed wind power generation units 300 installed therein, and thus the state of the plurality of low wind speed wind power generation units 300.
  • center axle 220 blade
  • shaft coupling portion 222 drag type blade unit
  • segment 320 drive unit
  • sensor 400 central control center
  • control unit 600 storage battery
  • the low wind speed wind turbine 300 has a semicircular annular drag type blade which is fixed in the same rotational direction by forming an overlap ratio of the overlap region, and an air foil type which is connected to the outer circumferential surface of the drag type blade to maximize the peripheral speed ratio.
  • At least one low wind speed wind turbine selected from the low wind speed wind turbine 100 according to one aspect including a blade and the low wind speed wind turbine 200 according to another aspect is installed.
  • the present invention provides a configuration of a drag type blade for determining the blade rotation start to obtain the maximum efficiency wind power generation at low wind speed wind energy and an air foil type blade for determining the efficiency (speed ratio) of the output coefficient at the same time as the rotation start.
  • the efficiency range of the geometrical parameter (Geometrical Parameter), which is an important parameter, was proved, and the result of recombination and experiment with the parameter of the highest efficiency confirmed the industrially available wind power generation from the low wind speed wind energy.
  • the present invention enables the design of wind energy efficiently by referring to wind direction and wind speed, Reynolds number, air density, atmospheric condition, instantaneous variability, etc. As it improves output and supplies wind energy continuously for 24 hours, it is differentiated from solar power generation, which has a large installation area and is limited to power generation for 3 to 4 hours. Big.
  • the commercialization of the present invention can easily find a lot of wind energy in high-rise buildings, multi-unit houses, Yasan, etc. by wind speed change according to the altitude in the wind speed region of about 5m / sec, the amount of wind power generation than the solar power generation compared to the same capacity in these areas It has high competitiveness as a product to secure green energy resources and can be used industrially.
  • the extension angle of the semicircular annular drag type blade and the semicircle outward end, the Y axis spacing (a) between the semicircles Large blocks or small blocks are formed in multiple stages to generate the first rotational moment regardless of the direction of the wind.
  • the overlap region formed based on the center axis in the inertia of the rotation start generated strongly generates the second rotation moment, thereby improving starting torque of the low wind speed wind turbine generator. Therefore, the industrial significance of the design configuration for starting the wind turbine is great.
  • the rotation moment which is 1.0 or more by the structure of an air foil type blade is generated.
  • the diameter of the drag type blade (Id) is formed to the total blade diameter (Td) so as not to prevent the increase in the main speed ratio, and the blade thickness ratio, the angle of attack, the number of blades, the support shape, the large block or
  • the third rotation moment is more strongly generated, thus providing competitive wind power generation even at low wind speed.
  • the amount of sunshine decreases, so that the photovoltaic power generation efficiency decreases.
  • the blade of the wind power generator rotates for 24 hours, so the blade can be partially replaced in case of blade life or weather damage. Therefore, it is possible to realize quick after-sales and cost reduction. Therefore, the industrial significance is large.
  • Wind energy can be easily found in high-rise buildings, multi-unit houses, and night mountains by changing the wind speed according to the altitude in low wind speed areas, using vortex winds on the roof of buildings, or utilizing wind energy between buildings for wind power generation.
  • Horizontal installation is required for this.
  • the horizontal installation, the vertical installation, the inclined installation to enable the industrial significance is great.
  • the structure of the wind power generator is large in size, does not fit well with the surrounding landscape, and is not environmentally friendly, such as noise.
  • the present invention by improving the output efficiency to realize the structure size of the wind power generator small and improve the urban aesthetics by advertising and lighting effect by installing LED on the blade, by designing and constructing the blade in the form of large block multi-stage, small block multi-stage or segment It can be realized to match well with the surrounding landscape and minimize noise. Therefore, the industrial significance is large.
  • the control unit that reports the status of the wind power generator to the central control center can be configured to grasp the real-time power generation situation and wind characteristics, to prepare for sudden changes such as bad weather, and to control the low wind speed according to the control command of the central control center. It is significant that the wind turbines can be used industrially by controlling the segment angle of the wind turbine to be adapted to the wind characteristics.

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

Selon la présente invention, une structure bloc à étages multiples est configurée dans une structure générale droite ou tournée, et une aube du type à traînée formant une région de chevauchement intérieure est adoptée, de sorte que l'importance de couple de démarrage pour faire tourner les aubes d'une turbine éolienne depuis un point mort soit grande afin de réaliser des propriétés aérodynamiques dans lesquelles un moment de rotation devient plus grand. Des aubes du type à profil aérodynamique sont adoptées sur l'extérieur afin d'obtenir une accélération de rotation ayant un rapport de vitesse de 1,0 ou plus. Une production d'énergie éolienne peut être effectuée dans des conditions de vent faible quelle que soit la direction du vent, et une production d'énergie éolienne économique, ne nuisant pas à l'environnement et très efficace peut être effectuée quel que soit l'emplacement ou la position et avec des coûts d'installation bas.
PCT/KR2012/005227 2011-11-03 2012-07-02 Turbine éolienne pour vitesse de vent faible, et système de turbine éolienne utilisant celle-ci WO2013065927A1 (fr)

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KR1020110113716A KR101156928B1 (ko) 2011-07-04 2011-11-03 저풍속 풍력발전장치 및 이를 이용한 저풍속 풍력발전시스템
KR10-2011-0113716 2011-11-03

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CN105736246A (zh) * 2016-04-22 2016-07-06 陈书香 一种用于车辆的风能发电系统
CN108626073B (zh) * 2018-05-28 2023-12-12 郑国正 风力发电设备、风力发电器及风能吸收装置
WO2020219001A1 (fr) 2019-04-22 2020-10-29 Владимир Степанович СУХИН Installation électrique éolienne de type orthogonal

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EP1339983A2 (fr) * 2000-12-04 2003-09-03 Arup (Pvt) Ltd Ensemble ventilateur
KR100936503B1 (ko) * 2009-06-12 2010-01-13 주식회사 한림메카트로닉스 부스터 블레이드를 갖는 세그먼트 트위스팅 풍력발전시스템

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