WO2003076802A1 - Aube et element auxiliaire d'un aerogenerateur, et aerogenerateur - Google Patents
Aube et element auxiliaire d'un aerogenerateur, et aerogenerateur Download PDFInfo
- Publication number
- WO2003076802A1 WO2003076802A1 PCT/JP2002/004211 JP0204211W WO03076802A1 WO 2003076802 A1 WO2003076802 A1 WO 2003076802A1 JP 0204211 W JP0204211 W JP 0204211W WO 03076802 A1 WO03076802 A1 WO 03076802A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- auxiliary member
- wind
- wind turbine
- main body
- Prior art date
Links
- 238000010248 power generation Methods 0.000 claims description 29
- 230000007423 decrease Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 7
- 239000011151 fibre-reinforced plastic Substances 0.000 description 7
- 239000000956 alloy Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
- F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
-
- 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
- F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the present invention relates to a blade used for a wind turbine of a wind power generator, an auxiliary member of the blade, and a wind power generator.
- the lift force is a force which is orthogonal to the direction of wind and the speed of the blade relative to the blade determined by the direction and speed of the wind and the direction of the wind. Is the force from the wind receiving side (front side) to the opposite side (back side).
- pitch control the mounting angle (pitch angle) of the blade by a mechanical configuration.
- the wind power generator 100 in the publication is a Dutch windmill, as shown in FIG.
- a blade 93 is attached to a wind shaft 92 extending from a rotation shaft 91 of the wind turbine 90 of the power generator 100 in a direction orthogonal to the rotation shaft 91.
- the blade 93 is located near the boundary with the wind shaft 92.
- an elastic deformation portion 93a formed of a superelastic alloy material.
- the gazette also shows a blade 93 entirely formed of a superelastic alloy material.
- the elastic deformation portion 93a of the blade 93 is located near the boundary with the wind shaft 92, when the elastic deformation portion 93a deforms, the angle of the entire blade with respect to the wind changes. Therefore, when the wind speed is high, the power generation efficiency is significantly reduced. Also, since the elastically deformable portion 93a is formed integrally with the blade 93 and cannot be separated, the elastically deformable portion 93a cannot be applied to an existing blade, and the blade 93 must be newly formed. is there.
- the entire blade is deformed, so that the power generation efficiency is significantly reduced.
- the cost is high and the blade is heavy and difficult to rotate.
- An object of the present invention is to improve the power generation efficiency at a relatively low wind speed, and at the same time, to secure the power generation efficiency at a relatively high wind speed while preventing the wind turbine from over-rotating, an auxiliary member, and An object of the present invention is to provide a wind power generator.
- a blade body having a camber and rotatably attached to a rotation shaft of a wind turbine, and a rear end of the blade body in a rotation direction of the blade body.
- the present invention provides a blade for use in a wind turbine of a wind power generator, including an auxiliary member provided to extend from a blade main body.
- the auxiliary member has a first shape that increases the camper of the blade and increases the projected area of the blade on the rotating surface of the windmill.
- the auxiliary member deforms from the first shape when the wind power increases, to a second shape that reduces the camper of the entire blade to the same degree as the camber of the blade body, and when the wind power decreases, the first shape
- the blade body has a shape determined according to the size of the windmill, the stall wind speed, and the amount of power generation, and the auxiliary member is preferably detachable from the blade body.
- the rear end of the blade body is preferably detachable from the blade body.
- the rear end of the blade body and the auxiliary member are formed as a body.
- the auxiliary member is attached to the rear end of the blade body so that the operation is smoothly continued.
- the auxiliary member preferably has a slope that is continuous with the back surface of the blade body.
- the rear end of the blade body has a step portion for attaching the auxiliary member, and the back surface of the auxiliary member is the blade body. It is preferable to be attached to the step so as to be flush with the back surface.
- the auxiliary member is attached over the entire length of the blade body.
- the length of the auxiliary member is shorter than the length of the blade main body, and the auxiliary member is provided at least on a radially outer portion of the blade main body when the blade main body is attached to the wind turbine.
- the capture member is preferably one of a plurality of auxiliary members attached in the longitudinal direction of the blade body. Adjacent trapping members are preferably arranged at predetermined intervals. Preferably, the predetermined interval has a distance such that a change in airflow due to deformation of the radially outer auxiliary member of the blade does not interfere with the radially inner auxiliary member of the blade.
- the auxiliary member preferably includes a plurality of materials each having a different coefficient of thermal expansion, and it is preferable that at least one of the plurality of materials be electrically conductive.
- an extension amount of the auxiliary member extending rearward from the blade main body is not more than 20% of a width of the blade main body.
- a blade body having a camber and rotatably attached to a rotating shaft of a wind turbine; An auxiliary member provided; PC Lan Hire 11
- the auxiliary member is detachable from the blade main body, and flexibly deforms in response to wind force.
- an auxiliary member which is used in a wind turbine of a wind turbine generator, is attached to a blade body having a camber, and forms a blade together with the blade body.
- the auxiliary member increases the camber of the whole blade in a state where the auxiliary member extends from the blade main body to the rear end portion of the blade main body in the rotation direction of the blade main body, and further increases the camber of the blade to the rotation surface of the windmill. It has a first shape that increases the projected area.
- the auxiliary member deforms from the first shape when the wind power increases, to a second shape that reduces the camper of the entire blade to the same degree as the camper on the blade body, and changes to the first shape when the wind power decreases Return.
- an auxiliary member which is attached to a blade main body used in a wind turbine of a wind turbine generator and forms a blade together with the blade main body.
- the auxiliary member is flexibly deformed in response to wind force when it is attached to the rear end of the blade body in the direction of rotation of the blade body so as to extend from the blade body.
- a wind power generator including: a generator having a rotor shaft; and a windmill having a blade attached to the rotor shaft and rotating the rotor shaft by wind pressure.
- the blade has a camber and is rotatably mounted on the rotor shaft.
- An auxiliary member is provided at the rear end of the blade body in the direction of rotation of the blade body, extending from the blade body.
- the auxiliary member has a first shape that increases the camber of the blade and increases the projected area of the blade on the rotating surface of the windmill. The auxiliary member deforms from the first shape when the wind power increases to a second shape that reduces the camber of the entire blade to the same degree as the camber of the blade body, and changes to the first shape when the wind power decreases Return.
- FIG. 1 is a schematic perspective view of a conventional wind turbine generator.
- FIG. 2 is a schematic perspective view of a wind turbine generator according to one embodiment of the present invention.
- FIG. 3 is a schematic side view of a blade of the wind turbine generator of FIG.
- FIG. 4 is a schematic explanatory diagram of the experimental apparatus.
- Figure 5 is a graph showing the experimental results.
- FIG. 6A is a schematic perspective view of another blade.
- FIG. 6B is an exploded perspective view of the blade of FIG. 6A.
- FIG. 7 is a schematic sectional view of another blade.
- FIG. 8 is a schematic perspective view of another blade.
- FIG. 2 is a schematic perspective view of a wind power generator 11 according to one embodiment of the present invention, and the wind power generator 11 has a propeller-type wind turbine.
- FIG. 3 is a schematic side view of the blade 21.
- the wind turbine generator 11 includes a fixed part 12 fixed to the ground, and a pillar 13 erected on the fixed part 12, which is a metal pipe.
- a support case 14 rotatable with respect to the support 13 is arranged.
- the generator 16 is attached to the upper part of the support case 14.
- the generator 16 has a rotor shaft 18 extending horizontally.
- a windmill 20 is attached to the rotor shaft 18, and the windmill 20 and the rotor shaft 18 rotate integrally.
- the support case 14 is provided with tail fins 14a that rotate the support case 14 by wind and always direct the windmill 20 to the windward direction.
- Three blades 21 are attached to the windmill 20 at intervals of 120 °.
- the wind turbine 20 is formed so as to rotate in the counterclockwise direction (rotation direction R) in FIG.
- the front of the blade 21 is on the rotation direction R side of the windmill 20, and the rear of the blade 21 is on the side opposite to the rotation direction R of the windmill 20.
- the surface 2 2 b of the blade 21 receives wind.
- the blade 21 includes a blade body 22 which is a propeller blade and an auxiliary member 23.
- the auxiliary member 23 is attached to the rear end of the blade main body 22.
- the blade main body 22 is formed to have a constant cross section over its longitudinal direction. Blade body 22 is attached to the windmill 20 so that its camber is convex on the back side.
- the shape of the blade body 22 is suitably formed according to the size of the windmill, the stall wind speed, and the amount of power generation.
- the blade body 22 is formed of fiber-reinforced plastic in the present embodiment.
- the catching member 23 has a flat plate shape, and is attached to the blade main body 22 so as to extend rearward of the blade main body 22 along the back surface 22 a of the blade main body 22. At this time, the auxiliary member 23 has the first shape.
- the auxiliary member 23 is attached to the blade body 22 by screwing the port 24 into a nut (not shown) arranged in a cavity in the blade body 22 (see FIG. 3).
- the catching member 23 has a slope 2 connected to the back surface 2 2 a of the blade body 22 at its front end so that its back surface 23 a follows the sliding force with the back surface 22 a of the blade body 22. Has 3b.
- the auxiliary member 23 has flexibility and is flexibly deformed according to wind pressure.
- the auxiliary member 23 is formed of fiber reinforced plastic.
- the fiber-reinforced plastic is, for example, a carbon fiber reinforced plastic or a Porone fiber reinforced plastic.
- the support case 14 In the state where the wind is blowing, the support case 14 is rotated by the tail fins 14a, and the windmill 20 is directed to the windward direction.
- the projected area of the blade 21 onto the rotation surface S (see FIG. 3) of the windmill 20 is increased by the auxiliary member 23 compared to the case where only the blade body 22 is used. Therefore, the windmill 20 is started at a lower wind speed than without the auxiliary member 23.
- the center of the rotation surface S of the windmill 20 is the rotor shaft 18.
- the portion r (the portion of the turning radius r) from the center of rotation of the rotor shaft 18 in the blade 21 is at a speed proportional to the turning radius r, and moves within the rotation plane S of the wind turbine 20. Rotate.
- the speed component in the section of the rotation speed of the blade 21 at the rotation radius r is indicated by the moving speed U r.
- a wind having a relative wind speed Vr is apparently blowing at a portion of the turning radius r of the blade 21.
- Blade 2 1 Overall lift is lift Lr It is a sum. The blade 21 moves and the windmill 20 rotates due to the rotational direction component of the lift.
- the entire camber of the blade 2 1 is the blade body without the auxiliary member 23
- the auxiliary member 23 bends in the direction of the relative wind speed Vr as shown by the two-dot chain line in FIG. 3 (second shape). Even when the auxiliary member 23 is radiused, the projected area of the blade 21 on the rotation surface S of the windmill 20 hardly changes. By the force of the auxiliary member 23, the camber of the blade 21 is reduced to the same extent as that of the blade body 22 alone. Due to the reduced number of campers, the lift of the blade 21 is reduced to a level comparable to that of the blade body 22 alone. Therefore, over rotation of the windmill 20 is prevented.
- the blade body 22 does not deform, the power generation efficiency of the generator 16 is ensured, and a significant decrease in power generation efficiency is prevented.
- the radiused auxiliary member 23 returns to a state (first shape) extending along the rear surface 22 a again. Therefore, the campers of the blades 21 are regenerated and the lift is increased, and the power generation efficiency of the generator 16 is improved.
- the wind tunnel device 31 is arranged in front of the wind power generation device 11.
- the wind tunnel device 31 includes a cylindrical wind tunnel 32, and a blower 33 is provided at an opening on the upstream side.
- the number of rotations per second of the blower 33 is synchronized with the frequency of the drive current.
- the power supply device 34 has an inverter, and the frequency of the drive current is changed by the inverter.
- the blower 33 generates, for example, a wind having a wind speed of 1.1 O m / s when the frequency of the drive current is 6 OH Z , and a wind speed of 5.5 m / s when the frequency is 3 OH z. Have.
- a rectifier plate 35 is provided at the downstream opening of the wind tunnel 32.
- a voltmeter 36 for measuring the generated voltage is connected to the generator 16.
- the blade body 2 2 has an airfoil of NA CA 2 4 1 2 and a length of 15 O mm It has a width (chord) of 42 mm and a maximum thickness of 5 mm.
- a radially inner end 22d of the blade body 22 is mounted at a position of 18 to 20 mm from the rotor shaft 18.
- the auxiliary member 23 is made of brass, has a thickness of 0.01 mm, and has a length substantially equal to the length of the blade 21. The experiment was performed by changing the amount of the auxiliary member 23 extending rearward from the blade 21 as follows.
- the power generation voltage could be improved more than in the case of [Example 1].
- the generated voltage could be improved, but the rate of increase of the generated voltage was smaller than in other cases where the extension was larger.
- the catching member 23 was bent at a wind speed lower by about 2 m / s than in the cases of [Example 4] to [Example 6].
- the generation voltage improvement rate was the largest in [Example 5] and [Example 6].
- the force-in wind speed (starting wind speed) was lower when the auxiliary member 23 was provided than in [Example 1], and it started at 3.30 mZs in [Example 5]. The following was confirmed by the experiment.
- the flexible auxiliary member 23 having an appropriate amount of extension, the power generation efficiency can be improved, and the auxiliary member 23 bends at a relatively high wind speed. Rotation can be prevented.
- the wind turbine generator 11 of the present embodiment has the following advantages.
- the camber of the entire blade 21 increases at a relatively low wind speed, and the power generation efficiency improves.
- the auxiliary member 23 increases the projected area of the blade 21 onto the rotating surface S of the windmill 20. Therefore, the windmill 20 starts at a relatively lower level and wind speed than when only the blade body 22 is used (cut-in). it can.
- the catching member 23 is bent by the wind force, so that the camper of the blade 21 is reduced to about the same level as when the blade body 22 alone is used.
- the auxiliary member 23 is bent, the blade body 22 is not deformed.
- the windmill 20 is prevented from over-rotating while securing the desired power generation efficiency. That is, it is possible to improve the power generation performance at a wind speed lower than the stall wind speed while maintaining the stall wind speed as it is.
- the auxiliary member 23 can be separated from the blade body 22. Therefore, the auxiliary member 23 can be retrofitted to an existing blade whose shape is determined in advance according to the size of the windmill, stall wind speed, power generation amount, and the like.
- the camber of the entire blades can be increased at relatively low wind speeds to improve lift and improve power generation efficiency. Therefore, for example, even if a blade designed to correspond to a place where relatively high-speed wind blows constantly in Europe is used in a place where relatively low-speed wind blows such as Japan, the catching member 23 is attached to the blade. By attaching it, sufficient lift can be obtained and the desired power generation efficiency can be secured.
- auxiliary member 23 Since the auxiliary member 23 is attached to the blade body 22 by the port 24, it can be easily attached. If the auxiliary member 23 is deformed due to long-term use, it can be easily removed and replaced.
- the auxiliary member 23 has a slope 23b at the front end, and is attached to the blade body 22 such that the back surface 23a is continuous with the back surface 22a of the blade body 22. . Therefore, it is possible to smooth the air flow and prevent a decrease in lift. 02 04211
- the auxiliary member 23 is attached over the entire length of the blade body 22. Therefore, the number of campers can be increased over the entire length of the blade body 22.
- a step portion 41 may be formed at the rear end of the blade body 22.
- the back surface 22a of the blade body 22 and the back surface 23a of the auxiliary member 23 may be flush.
- an engaging protrusion 42 is formed on the side surface of the auxiliary member 23, and an engaging groove 43 corresponding to the blade body 22 is formed. You may.
- the engaging protrusion 42 may be engaged with the engaging groove 43, and the auxiliary member 23 may be fixed to the blade body 22 with a screw 44 or a port 24.
- the rear end 52 of the blade body may be formed to be removable, and the rear end 52 and the auxiliary member 23 may be integrally molded.
- the integral molded part 54 is attached to the blade body with, for example, bolts.
- the rear end portion 52 of the blade body is detachably formed, the rear end portion 52 and the auxiliary member 23 are formed separately without integral molding, and the auxiliary member 23 is bolted with bolts 24 or the like. It may be attached to the rear end 52. In this case, since the rear end portion 52 can be removed from the wind turbine generator 11 and the auxiliary member 23 can be replaced, the trapping member 23 can be easily replaced.
- a plurality of auxiliary members may be attached in the longitudinal direction of the blade body 22 as shown in, for example, an auxiliary member 55 shown in FIG. Since the radially outer end 2 2c of the blade body 22 attached to the windmill 20 has a larger turning radius than the radially inner end 2 2d of the blade body 22, the radially inner end 2 2c The moving speed is faster than 2d, and the relative wind speed Vr is faster. Therefore, the auxiliary member 55 at the radially outer end 22c bends before the auxiliary member 55 at the radially inner end 22d. In this case, corresponding to the difference in relative wind speed due to the difference in turning radius, the radial inner end 22 P leak 2/04211
- the auxiliary member 55 in FIG. 8 may be partially attached to the blade body 22 in the longitudinal direction.
- the auxiliary member 55 is preferably attached to at least the radially outer end 22 c of the blade body 22.
- the radially outer end 22c has the largest turning radius and the largest relative wind speed on the blade 21 and contributes most to the generation of lift. Therefore, the power generation efficiency can be effectively improved by attaching the auxiliary member 55 to at least the radially outer end 22c.
- the auxiliary member 55 may be attached to another part of the blade main body 22 without attaching the auxiliary member 55 to the radially outer end 22 c.
- the auxiliary member may be formed of a plurality of materials, each having a different coefficient of thermal expansion, and at least one of the plurality of materials may be formed to be conductive.
- a bimetal 56 may be attached to the auxiliary member 55 so as to be able to conduct electricity.
- An electric wire 57 that gives heat to the bimetal 56 is wired inside the blade body 22.
- the power generation efficiency can be adjusted by adjusting the extension direction of the auxiliary member 55 by thermally expanding the bimetal 56 by energization by the electric wire 57.
- the rear end of the catching member 23 may be bent to the windward side to make the camper of the entire blade 21 larger.
- the rear end of the auxiliary member 23 may be slightly bent to the leeward side within a range where the camper of the entire blade 21 is larger than that of the blade body 22 alone.
- the front end of the auxiliary member 23 may not be formed in a slope, and there may be some steps at the connection between the back surface 2 2 a of the blade body 22 and the back surface 23 a of the auxiliary member 23. . Connections should be smooth so that airflow is smooth and unnecessary lift is prevented.
- the outer edge 22c of the blade body 22 in the radial direction may be formed to be narrower than the inner side in the radial direction, and the auxiliary member 23 may be formed so as to conform to the shape of the blade body 22. 02 04211
- the blade body 22 may be formed of metal, wood, or the like. In this case, it is desirable that the blade body 22 be made of fiber reinforced plastic which is lighter than metal and has the same strength as metal.
- the fiber of the fiber reinforced plastic forming the trapping member 23 and the blade body 22 is glass fiber / polyamide fiber, and the resin of the fiber reinforced plastic may be nylon or polyester.
- the auxiliary member 23 may be formed by processing rubber so that it is not deteriorated even by rain, or may be formed by a superelastic alloy ⁇ morphous metal.
- the auxiliary member does not have to have flexibility.
- a plate formed so as not to bend may be attached to the rear end of the blade 21 with an elastic member such as a spring.
- an elastic member such as a spring.
- the lift increases due to the increase in the projected area and the camber, and the power generation efficiency is improved at a relatively low wind speed.
- the elastic member radiuses and the entire plate extends in the direction of the relative wind speed, reducing the camber to about the same as the blade body 22. Therefore, it is possible to prevent the windmill from over-rotating while securing the desired power generation efficiency.
- the blade body 22 is not limited to a propeller blade, and may be, for example, a flat plate of a Dutch windmill.
- An auxiliary member may be attached to the rear end of the flat blade body.
- the auxiliary member 23 may be formed integrally with the blade body 22.
- the number of windmill blades is not limited to three. It will be apparent to one skilled in the art that the present invention may be embodied in other alternatives without departing from the spirit and scope of the invention.
Abstract
L'invention concerne une aube destinée au moulinet d'un aérogénérateur et permettant d'augmenter l'efficacité de production d'énergie à une vitesse de vent plutôt faible et d'empêcher une rotation excessive du moulinet tout en assurant une efficacité de production d'énergie donnée à une vitesse de vent plutôt élevée. Cette aube comprend un corps d'aube (22) d'une courbure donnée fixé rotatif à l'arbre rotatif du moulinet, ainsi qu'un élément auxiliaire (23) monté au niveau de l'extrémité arrière du corps d'aube dans le sens de rotation du corps d'aube de façon à se prolonger à partir de celui-ci. Ledit élément auxiliaire présente une première forme augmentant la courbure de l'aube et de la zone saillante de l'aube sur la surface rotative du moulinet. Lorsque la force du vent augmente, il peut se déformer à partir de cette première forme et prendre une seconde forme réduisant la courbure de l'ensemble de l'aube au même niveau que la courbure du corps d'aube. Lorsque la force du vent diminue, il reprend sa première forme.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002253611A AU2002253611A1 (en) | 2002-03-13 | 2002-04-26 | Blade and auxiliary member of wind power generator, and wind power generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002-68599 | 2002-03-13 | ||
JP2002068599A JP2003269320A (ja) | 2002-03-13 | 2002-03-13 | 風力発電装置のブレード及び補助部材 |
Publications (1)
Publication Number | Publication Date |
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WO2003076802A1 true WO2003076802A1 (fr) | 2003-09-18 |
Family
ID=27800302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/004211 WO2003076802A1 (fr) | 2002-03-13 | 2002-04-26 | Aube et element auxiliaire d'un aerogenerateur, et aerogenerateur |
Country Status (3)
Country | Link |
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JP (1) | JP2003269320A (fr) |
AU (1) | AU2002253611A1 (fr) |
WO (1) | WO2003076802A1 (fr) |
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WO2007105174A1 (fr) | 2006-03-14 | 2007-09-20 | Tecsis Tecnologia E Sistemas Avançados Ltda | Pale multi-élément à profil aérodynamique |
US9366222B2 (en) | 2010-08-10 | 2016-06-14 | Siemens Aktiengesellschaft | Rotor blade element and method for improving the efficiency of a wind turbine rotor blade |
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JP5365959B2 (ja) * | 2009-05-11 | 2013-12-11 | 正憲 麻生 | 翼角調整機能付平板翼片持支持式(うちわ式)多翼プロペラ形風車 |
KR101068443B1 (ko) * | 2009-12-24 | 2011-09-28 | 황지선 | 풍력 발전용 로터 |
KR101089129B1 (ko) | 2010-03-29 | 2011-12-02 | 박완규 | 확장형날개를 지닌 풍력발전장치 |
JP4796196B1 (ja) * | 2010-06-05 | 2011-10-19 | 秀行 飯島 | 風力発電装置および風力発電装置の羽根 |
DK2479423T3 (en) | 2011-01-24 | 2018-05-28 | Siemens Ag | Wind turbine rotor blade element |
CN102900632A (zh) * | 2012-11-08 | 2013-01-30 | 浙江风光新能源科技有限公司 | 带导风罩的风力发电机叶片装置 |
CN104005915A (zh) * | 2013-02-27 | 2014-08-27 | 苏州工业园区欧霸动力设备有限公司 | 小型风力发电装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS501242A (fr) * | 1973-05-14 | 1975-01-08 | ||
JPS5775177U (fr) * | 1980-10-27 | 1982-05-10 | ||
JPS59136581A (ja) * | 1983-01-27 | 1984-08-06 | Mitsubishi Heavy Ind Ltd | プロペラ型風車 |
US5616963A (en) * | 1994-11-02 | 1997-04-01 | Kikuchi; Naomi | Wind power generator with automatic regulation of blade pitch in response to wind speed by means of spring mounted blades |
JP3071880U (ja) * | 2000-03-21 | 2000-09-22 | 茂信 五島 | 風車の回転安定機構 |
-
2002
- 2002-03-13 JP JP2002068599A patent/JP2003269320A/ja active Pending
- 2002-04-26 WO PCT/JP2002/004211 patent/WO2003076802A1/fr active Application Filing
- 2002-04-26 AU AU2002253611A patent/AU2002253611A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS501242A (fr) * | 1973-05-14 | 1975-01-08 | ||
JPS5775177U (fr) * | 1980-10-27 | 1982-05-10 | ||
JPS59136581A (ja) * | 1983-01-27 | 1984-08-06 | Mitsubishi Heavy Ind Ltd | プロペラ型風車 |
US5616963A (en) * | 1994-11-02 | 1997-04-01 | Kikuchi; Naomi | Wind power generator with automatic regulation of blade pitch in response to wind speed by means of spring mounted blades |
JP3071880U (ja) * | 2000-03-21 | 2000-09-22 | 茂信 五島 | 風車の回転安定機構 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007105174A1 (fr) | 2006-03-14 | 2007-09-20 | Tecsis Tecnologia E Sistemas Avançados Ltda | Pale multi-élément à profil aérodynamique |
US8647063B2 (en) | 2006-03-14 | 2014-02-11 | Tecsis Tecnologia Sistemas Avançados S.A. | Multi-element blade with aerodynamic profiles |
US9366222B2 (en) | 2010-08-10 | 2016-06-14 | Siemens Aktiengesellschaft | Rotor blade element and method for improving the efficiency of a wind turbine rotor blade |
EP2572102B1 (fr) * | 2010-08-10 | 2016-12-14 | Siemens Aktiengesellschaft | Elément d'ailette et procédé permettant d'améliorer l'efficacité d'une ailette de turbine éolienne |
Also Published As
Publication number | Publication date |
---|---|
AU2002253611A1 (en) | 2003-09-22 |
JP2003269320A (ja) | 2003-09-25 |
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