WO2008102461A1 - 垂直軸型風車 - Google Patents
垂直軸型風車 Download PDFInfo
- Publication number
- WO2008102461A1 WO2008102461A1 PCT/JP2007/054755 JP2007054755W WO2008102461A1 WO 2008102461 A1 WO2008102461 A1 WO 2008102461A1 JP 2007054755 W JP2007054755 W JP 2007054755W WO 2008102461 A1 WO2008102461 A1 WO 2008102461A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- opening
- vertical axis
- open
- wind turbine
- Prior art date
Links
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 26
- 230000002093 peripheral effect Effects 0.000 description 17
- 238000010248 power generation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- 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
- F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
- F03D7/0252—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking with aerodynamic drag devices on the blades
-
- 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
- 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
-
- 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
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/305—Flaps, slats or spoilers
- F05B2240/3052—Flaps, slats or spoilers adjustable
-
- 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
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/79—Bearing, support or actuation arrangements therefor
-
- 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
- F05B2260/90—Braking
- F05B2260/901—Braking using aerodynamic forces, i.e. lift or drag
-
- 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
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- 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 vertical axis type wind turbine used for wind power generation and the like, and more particularly, an improved blade so that aerodynamic characteristics can be changed according to the rotational motion of the wind turbine.
- a horizontal axis type wind turbine (propeller type wind turbine) whose rotation axis is horizontal to the wind direction, and a vertical axis whose rotation axis is perpendicular to the wind direction.
- An axial wind turbine is known.
- a horizontal axis type windmill has a feature that it is easy to obtain a rotational force (starting force) that starts rotational motion from a rotating stationary state, and a vertical axis type windmill has a feature that it can rotate regardless of the direction of the wind. Have.
- the vertical axis type windmills work on the blades, such as Sabonius type and paddle type, which use the anti-power acting on the part (blade) that generates the aerodynamic force of the windmill as the main rotational force of the windmill.
- lift types such as the Darius type and the gyromill type in which the rotational direction component of the lift is the main rotational force of the windmill.
- Anti-wind type windmills receive wind in the stationary and rotating state, causing drag on the blades.
- the rotational force generated by this anti-causal force starts (starts) and continues to rotate. Yes.
- Such an effect is generally called the Sabonius effect.
- a lift-type wind turbine receives wind in a rotating state, thereby generating a rotational component of lift in the blade, and continues to rotate by the rotational force of the rotational component of this lift.
- Such an effect is generally called the gyromill effect.
- the peripheral speed ratio ratio of blade rotation speed to wind speed
- a drag type vertical axis wind turbine is mechanically incorporated into a lift type vertical axis wind turbine, thereby enabling startup in a low wind speed range (l to 2 mZ sec).
- Wind turbines for example, Japanese Patent Application Laid-Open No. 2 0 0 6-4 6 3 0 6) and blades with notches and the like, and wind resistance from the rear and anti-wind
- a Savonius effect is obtained aerodynamically, enabling start-up in a low wind speed range, and improving power generation efficiency in a low wind speed range (2 to 6 m / sec)
- Wind turbines that make this possible have been devised (for example, Japanese Patent No.
- the Savonius effect is proportional to the aerodynamic characteristics of the blade shape where the drag acts and its area (flat area perpendicular to the wind direction). The larger the area, the higher the Sabonius effect, and the starting force and rotational force. Can be increased.
- a vertical axis type windmill has a problem that the gyromill effect cannot be maximized when rotating in the middle / high wind speed region (6 mZ sec or more).
- the gyromill effect depends on the aerodynamic characteristics of the blade surface where lift acts and its area (blade area) and rotation speed. In particular, by reducing the resistance acting on the blade, the gyromill effect is enhanced and the rotational force is increased. Can. Therefore, there is a risk that anti-fogging sites (notches, etc.) provided to obtain anti-fogging may reduce the gyromill effect when rotating in the middle and high wind speed range.
- the present invention has been made in view of the above circumstances, and its purpose is to waste wind power in a wide range of wind speeds by adjusting the resistance generated in the blade according to the rotation state of the blade. It is to provide a vertical axis type wind turbine that can be converted into rotational force without any problems.
- the above object of the present invention is to provide a vertical axis type wind turbine in which a plurality of blades are provided at equiangular intervals around a vertical rotation axis in a plane orthogonal to the vertical rotation axis.
- a streamlined airfoil having a lift coefficient, an opening / closing member whose front end is pivotally supported on the back surface of the blade, and whose rear end opens / closes with respect to the blade; and a ratio between the rotational speed and the wind speed of the blade Accordingly, this is achieved by including an opening / closing control means for controlling the opening / closing operation of the opening / closing member.
- the opening / closing control means opens the opening / closing member when the ratio of the rotation speed of the blade to the wind speed is less than 0.8, and the ratio of the rotation speed of the blade to the wind speed is 0. This is effectively achieved by closing the open / close member when the value exceeds 8-1.
- the object is that the position where the front end portion of the opening / closing member is pivotally supported is a back surface of 65 to 75% from the front edge of the chord length of the blade, and the opening / closing member is The maximum angle that opens with respect to the blade is 30 to 40 °, which is effectively achieved.
- the above object is effectively achieved by forming the blade from a light metal such as an aluminum alloy or a titanium alloy or a composite material such as a fiber reinforced plastic.
- the above object is effectively achieved because the blade shape of the blade is the shape used for the main wing of a light aircraft with asymmetric wings (aircraft with a takeoff weight of 5700 kgf or less). Is done.
- the opening / closing control means is fixed to an arm member erected from the front end portion of the opening / closing member toward the inside of the blade, the tip end portion of the arm member, and the inner wall of the blade. Generated by the mass of the opening / closing member transmitted through the arm member, and a spring member that connects the spring support member and a stopper member that restricts the movable range of the tip of the arm member. This is effectively achieved by controlling the opening / closing operation of the opening / closing member by the centrifugal force and the elastic force of the spring / actuator.
- the above object is that if the spring constant of the spring / actuator is greater than 0.8 to 1.0, the centrifugal force generated by the mass of the opening / closing member is reduced. This is achieved effectively by setting it to be larger than the elastic force of Actu Yue.
- the object is achieved effectively by the opening / closing member having a weight for adjusting the opening / closing operation at a rear portion of the surface facing the blade.
- An open / close determining unit that determines whether the open / close member is open or closed according to a ratio between a rotational speed of the blade and a wind speed; and the open / close member according to an open Z close signal output from the open / close determination unit. It is effectively achieved by providing an action to open / close the. Further, the above object is effectively achieved by the fact that the above-mentioned action is one of electric type, hydraulic type, and pneumatic type.
- the opening / closing member that is pivotally supported on the back surface of the streamline blade type blade having a lift coefficient of 1.0 or more so as to be openable and closable with respect to the blade.
- the aerodynamic characteristics can be changed by opening and closing the opening / closing member.
- the resistance generated in the blade can be increased by 8 to 15 times by changing the opening / closing member from the closed state to the open state.
- the opening / closing member is opened to It is possible to improve the Sabonius effect by increasing the resistance caused by the wind received, while the medium and high wind speed range (the ratio of the blade rotation speed to the wind speed exceeds 0.8 to 1).
- the rotating state by closing the opening / closing member, the resistance generated in the blade can be reduced, and the gyromill effect can be improved by the rotational direction component of the lift acting on the blade.
- the vertical axis type wind turbine according to the present invention has the advantages of the anti-vertical type vertical axis wind turbine and the lift type vertical axis type wind turbine, thereby maximizing the Savonius effect and the gyromill effect. Can do.
- the starting wind speed of the vertical axis type wind turbine (the wind speed necessary for starting from a rotating stationary state) can be made lower than that of the conventional vertical axis type wind turbine, and the low wind speed range (2 to 6 m_sec.
- the rotational speed in the middle and high wind speed range (6 mZ sec or more) can be further increased. That is, a wide range of wind In the speed range, the efficiency of the windmill (efficiency for converting wind power into rotational force) can be greatly improved, and power generation efficiency can be improved.
- the front end of the opening / closing member is pivotally supported on the back surface at a position 65 to 75% from the front edge of the blade chord length (longitudinal width of the blade cross section), and the opening / closing member is By making it open 30 to 40 degrees at the maximum, the efficiency of the wind turbine can be greatly improved, especially in the range of wind speeds of 1 to 2 O mZ sec.
- a spring actuate that connects an arm member standing from the front end of the opening and closing member toward the inside of the blade, and a spring support member fixed to the tip of the arm member and the inner wall of the blade;
- an opening / closing control means consisting of a stopper member that limits the movable range of the tip of the arm member, the centrifugal force generated by the mass of the opening / closing member transmitted through the arm member and the elasticity of the spring / architecture
- the opening / closing operation of the opening / closing member can be automatically controlled by the force.
- the centrifugal force applied to the spring / actuator can be finely adjusted. It is possible to finely adjust the opening / closing operation of the opening / closing member without changing the installed spring / architecture.
- the open / close control means includes an open / close determining unit that determines whether the open / close member is open or closed according to a ratio between the rotational speed of the blade and the wind speed, and an open / close member according to an open / close signal output from the open / close determining unit. Is an open and closed state.
- an electric, hydraulic, or pneumatic type in Kuchiyue overnight a blade opening / closing mechanism can be adopted even for a large vertical axis type windmill.
- FIG. 1 is a top view schematically showing a vertical axis wind turbine according to a first embodiment of the present invention.
- FIG. 2 is a partially cutaway front view schematically showing a vertical axis type windmill viewed from the direction of arrows I I in FIG.
- FIG. 3 is a perspective view schematically showing a blade of the vertical axis wind turbine according to the first embodiment.
- FIG. 4 is a cross-sectional view of an essential part schematically showing the internal structure of the blade of the vertical axis wind turbine according to the first embodiment.
- FIG. 5 is a cross-sectional view of an essential part schematically showing a state in which the opening / closing member of the blade of FIG. 4 is closed.
- FIG. 6 is a diagram for explaining the rotation operation in a state where the opening / closing member of the vertical axis type wind turbine according to the first embodiment is opened.
- FIG. 7 is a diagram for explaining the rotation operation in a state where the opening / closing member of the vertical axis wind turbine according to the first embodiment is closed.
- FIG. 8 is a structural diagram showing a schematic configuration of a vertical axis wind turbine according to the second embodiment of the present invention.
- FIG. 1 is a top view schematically showing a vertical axis wind turbine according to the first embodiment of the present invention
- FIG. 2 is a schematic diagram of the vertical axis wind turbine viewed from the direction of arrow II in FIG. In It is a partially broken front view shown.
- a vertical axis type windmill 1 includes a vertical rotating shaft 2 having a lower end connected to a generator or the like (not shown), and a circle having the same radius in a plane orthogonal to the rotating shaft 2.
- Four blade-shaped blades 3, 3,... are arranged in parallel to the rotating shaft 2 at equiangular intervals along the circumferential direction (90 ° intervals in this embodiment).
- Each blade 3 is fixed to an end portion of a support track 4 extending radially from the rotating shaft 2 with a predetermined mounting angle (90 ° in the present embodiment) with respect to the support track. Therefore, the rotation of the blade 3 by the wind force is transmitted to the rotating shaft 2 through the support track 4.
- the outer skin of the blade 3 is made of a thin plate material made of a light metal such as an aluminum alloy or a titanium alloy, or a composite material such as a fiber reinforced plastic (FRP).
- the blade 3 has a streamlined shape with a lift coefficient of 1.0 or more (preferably 1.0 to 1.4), and in particular, a light aircraft with an asymmetric wing (takeoff weight 5 7 0 0 0
- the shape used for the main wing of airplanes of kg ⁇ or less for example, 4-letter airfoil, RAF airfoil, Göttingen airfoil, etc.
- the surface of the blade 3 having a large bulge is the surface of the blade 3
- the surface of the airfoil having a small bulge is the back surface of the blade 3.
- FIG. 3 is a perspective view schematically showing the external appearance of the blade of the vertical axis wind turbine according to the present embodiment
- FIG. 4 is a cross-sectional view of the main part schematically showing the internal structure of the blade. .
- a blade support girder 5 having a substantially U-shaped cross section is disposed inside the blade 3, and the blade support girder 5 prevents deformation of the blade 3 during rotation.
- the blade 3 is fixed to the end portion of the support rack 4 by means of the track support brackets 6 and 6 provided at the base end portion of the blade support beam 5 and the rear front portion of the blade 3.
- the outer skin of the rear part of the back surface of the blade 3 is pivotally supported by the rear surface of the blade 3 via a hinge 7 and the rear end part is blurred.
- Opening / closing member 8 that opens and closes to the door 3.
- the position where the front end portion of the opening / closing member 8 is pivotally supported is preferably the back surface of 65 to 75% from the front edge of the chord length of the blade 3.
- an arm member 9 standing from the front end of the opening / closing member 8 toward the inside of the blade 3, and a spring support fixed to the tip of the arm member 9 and the inner wall of the blade
- An opening / closing control means 1 3 comprising a spring actuator 1 arranged so as to connect the member 10 and a stopper member 12 2 for restricting the movable range of the tip of the arm member 9 is provided. Is provided.
- the opening / closing control means 13 controls the opening / closing operation of the opening / closing member 8 by the centrifugal force generated by the mass of the opening / closing member 8 transmitted through the arm member 9 and the inertia force of the spring actuator 11.
- the spring constant of spring 1 1 is that the centrifugal force generated by the mass of the opening / closing member 8 is reduced when the peripheral speed ratio (ratio between the rotational speed of the blade 3 and the wind speed) exceeds 0.8 to 1.0. It is set to be larger than the inertia of 1 1 As a result, when the opening / closing member 8 in the open state exceeds the predetermined peripheral speed ratio, it is closed as shown in FIG. That is, at least in the rotating state where the peripheral speed ratio exceeds 1 ⁇ 0, the blade 3 is in the closed state.
- the maximum angle in the open state in which the opening / closing member 8 is open with respect to the blade 3 is set according to the position where the stopper member 12 is provided, and the angle is preferably 30 ° to 40 °.
- a weight 14 is attached to the rear of the surface of the opening / closing member 8 facing the blade 3.
- This weight 14 is for finely adjusting the centrifugal force applied to the spring actuary 11 and is arranged inside the blade 3 by fine adjustment of the weight 14. Without changing the spring actuator 11, the fine adjustment of the opening / closing operation of the opening / closing member 8, that is, the setting of the peripheral speed ratio at which the opening / closing member 8 is closed can be changed.
- the rear surface of the rear surface of the blade 3 Although the outer shell itself is the opening / closing member 8, the present invention is not limited to this.
- the front end portion of another plate-like member is rotatably attached to the back surface of the blade 3, and the rear end portion is A member that can be opened and closed with respect to the blade 3 may be used as the opening and closing member 8.
- three open / close control means 13 are arranged at equal intervals along the longitudinal direction inside each blade 3.
- the present invention is not limited to this, and the number and position of the opening / closing control means 13 disposed as required can be changed.
- FIG. 6 the rotation operation of the vertical axis wind turbine according to this embodiment will be described with reference to FIGS. 6 and 7.
- FIG. 6 the rotation operation of the vertical axis wind turbine according to this embodiment will be described with reference to FIGS. 6 and 7.
- FIG. 6 is a diagram for explaining the rotation operation in a state in which the opening / closing member of the vertical axis wind turbine according to the present embodiment is open
- FIG. 7 is an illustration of the opening / closing member of the vertical axis wind turbine according to the present embodiment. It is a figure explaining rotation operation of a closed state.
- the open / close member 8 of each blade 3 of the vertical axis wind turbine 1 is shown in FIG. 6 in the spring stationary state as shown in FIG. It is in the open state by the inertial force.
- the wind received from the rear of the blade 3 rather than the resistance (blade on the upper side of FIG. 6) generated by the wind received from the front of the blade 3
- the resulting resistance (the lower blade in Fig. 6) is larger.
- this anti-power difference activates the windmill 1 as a rotational force, and the rotation of the windmill 1 is maintained by the Saponius effect.
- the opening / closing member 8 that is pivotally supported to be openable / closable with respect to the blade 3 is provided on the back surface of the streamlined blade-type play 3.
- the aerodynamic characteristics of the blade 3 are suitable for its rotational state.
- the shape can be changed automatically.
- the opening / closing member 8 is opened to generate the wind received from the rear of the blade.
- the Sabotius effect can be improved by increasing the resistance.
- the opening / closing member 8 By closing the, the resistance generated in the blade 3 can be reduced, and the gyromill effect can be improved by the rotational direction component of the lift acting on the blade 3 [second embodiment]
- FIG. 8 is a structural diagram showing a schematic configuration of a vertical axis wind turbine according to the second embodiment of the present invention.
- the vertical axis wind turbine 1A according to the present embodiment is the same as the vertical axis of the first embodiment described above except that the configuration of the open / close control means 1 3A is different from the open / close control means 1 3A of the first embodiment.
- the configuration of the type wind turbine 1 is the same. Therefore, in this embodiment, the same members as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
- an opening / closing control unit 13 A for controlling the opening / closing operation of the opening / closing member 8 is received by a rotational speed sensor 15 for detecting the rotational speed of the blade 3 A and a vertical axis wind turbine 1.
- the peripheral speed ratio (ratio between the rotational speed of the blade 3 A and the wind speed) is calculated based on the detection values of the wind speed sensor 16 that detects the wind speed, and the rotation speed sensor 15 and the wind speed sensor 16. It is determined whether or not the calculated peripheral speed ratio exceeds a predetermined value.
- the open / close determination unit 17 and the open / close member 8 are closed according to the open Z-close signal output from the open / close determination unit 17. It is equipped with 1 1 A and 1
- Open / close control means 1 3 The open / close determination unit 17 of A determines whether the open Z closed state is the same as in the first embodiment described above, whether or not the peripheral speed ratio exceeds 0.8 to 1.0.
- the blade 3 is in the closed state at least in the rotational state where the peripheral speed ratio is 1.0 or more.
- the opening / closing control means 1 3 A actuate 11 1 A makes the opening / closing member 8 open / closed by linearly moving in response to the opening / closing signal output from the opening / closing determination unit. Yes, it can be driven by electricity, hydraulics or pneumatics.
- the vertical axis type wind turbine 1 A can obtain the same functions and effects as those of the first embodiment described above.
- 1 A an electric, hydraulic, or pneumatic one is used. Therefore, the open / close mechanism of blade 3 A can be used for a large vertical axis wind turbine.
- the vertical axis wind turbine according to the present invention can effectively convert wind power into rotational force in a wide range of wind speeds from a low wind speed range to a high wind speed range.
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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)
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- Physics & Mathematics (AREA)
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007347567A AU2007347567B2 (en) | 2007-02-20 | 2007-03-06 | Vertical shaft windmill |
CN2007800516140A CN101622448B (zh) | 2007-02-20 | 2007-03-06 | 垂直轴型风车 |
US12/528,036 US20100021300A1 (en) | 2007-02-20 | 2007-03-06 | Vertical axis windmill |
EP07715313A EP2143940A1 (en) | 2007-02-20 | 2007-03-06 | Vertical shaft windmill |
CA2677993A CA2677993C (en) | 2007-02-20 | 2007-03-06 | Vertical axis windmill |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-039861 | 2007-02-20 | ||
JP2007039861A JP3996945B1 (ja) | 2007-02-20 | 2007-02-20 | 垂直軸型風車 |
Publications (1)
Publication Number | Publication Date |
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WO2008102461A1 true WO2008102461A1 (ja) | 2008-08-28 |
Family
ID=38683387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/054755 WO2008102461A1 (ja) | 2007-02-20 | 2007-03-06 | 垂直軸型風車 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100021300A1 (ja) |
EP (1) | EP2143940A1 (ja) |
JP (1) | JP3996945B1 (ja) |
KR (2) | KR20100121694A (ja) |
CN (1) | CN101622448B (ja) |
AU (1) | AU2007347567B2 (ja) |
CA (1) | CA2677993C (ja) |
WO (1) | WO2008102461A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010102459A1 (zh) * | 2009-03-10 | 2010-09-16 | Liu Shaozhong | 一种活叶调速型风力发电机组 |
KR101070646B1 (ko) | 2009-05-29 | 2011-10-07 | 이달은 | 풍력발전기용 튜브형 날개구조 |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101042683B1 (ko) | 2008-10-31 | 2011-06-20 | 윤미현 | 풍력 발전장치 |
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- 2007-03-06 KR KR1020097018281A patent/KR20090101513A/ko active Application Filing
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Also Published As
Publication number | Publication date |
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CN101622448B (zh) | 2012-08-22 |
EP2143940A1 (en) | 2010-01-13 |
CN101622448A (zh) | 2010-01-06 |
CA2677993A1 (en) | 2008-08-28 |
JP2008202508A (ja) | 2008-09-04 |
KR20100121694A (ko) | 2010-11-18 |
KR20090101513A (ko) | 2009-09-28 |
AU2007347567B2 (en) | 2011-06-30 |
US20100021300A1 (en) | 2010-01-28 |
AU2007347567A1 (en) | 2008-08-28 |
JP3996945B1 (ja) | 2007-10-24 |
CA2677993C (en) | 2012-04-10 |
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