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WO1998031934A1 - Rotor with multiplane blades and wind power engine comprising such rotors - Google Patents

Rotor with multiplane blades and wind power engine comprising such rotors

Info

Publication number
WO1998031934A1
WO1998031934A1 PCT/FR1998/000091 FR9800091W WO9831934A1 WO 1998031934 A1 WO1998031934 A1 WO 1998031934A1 FR 9800091 W FR9800091 W FR 9800091W WO 9831934 A1 WO9831934 A1 WO 9831934A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
rotor
blade
wind
figure
blades
Prior art date
Application number
PCT/FR1998/000091
Other languages
French (fr)
Inventor
Grégoire Alexandroff
Georges Alexandroff
Original Assignee
Aerospatiale
Alexandroff Gregoire
Georges Alexandroff
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially in wind direction
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction, i.e. structural design details
    • F03D1/0675Rotors characterised by their construction, i.e. structural design details of the blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially in wind direction
    • F03D1/02Wind motors with rotation axis substantially in wind direction having a plurality of rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially in wind direction
    • F03D1/06Rotors
    • F03D1/0608Rotors characterised by their form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially in wind direction
    • F03D7/0244Controlling wind motors the wind motors having rotation axis substantially in wind direction for braking
    • F03D7/0252Controlling wind motors the wind motors having rotation axis substantially in wind direction for braking with aerodynamic drag devices on the blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20Wind motors characterised by the driven apparatus
    • F03D9/25Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2220/00Application
    • F05B2220/70Application in combination with
    • F05B2220/706Application in combination with an electrical generator
    • F05B2220/7066Application in combination with an electrical generator via a direct connection, i.e. a gearless transmission
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/20Rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301Cross-section characteristics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/91Mounting on supporting structures or systems on a stationary structure
    • F05B2240/915Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
    • F05B2240/9152Mounting on supporting structures or systems on a stationary structure which is vertically adjustable by being hinged
    • F05B2240/91521Mounting on supporting structures or systems on a stationary structure which is vertically adjustable by being hinged at ground level
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
    • F05B2270/00Control
    • F05B2270/10Purpose of the control system
    • F05B2270/1016Purpose of the control system in variable speed operation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/721Blades or rotors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/723Control of turbines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/725Generator or configuration
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/728Onshore towers

Abstract

The invention concerns a rotor with multiplane blades and a wind power engine comprising such rotors. Each blade of the rotor comprises a spar (23) made of a single piece, forming at the same time two plane parts, linking elements (15, 16, 17) and a blade tail (18). Each blade also comprises streamlined elements of leading edges (24) and trailing edges (25), fixed on the plane parts of the spar (23). The invention also concerns a double rotor wind power engine in which each rotor with fixed pitch and high specific speed is associated with a multipole gearless alternator with variable speed: Each alternator is contained in a rigid streamlined shell, borne by a fork at the top of jibs pivoting in V.

Description

ROTOR BLADES AND WIND GENERATOR WITH MULTIPLANES

DESCRIPTION OF SUCH ROTOR

Technical area

A rotor with at least two blades used in particular on a wind turbine on a rotorcraft or any other rotating machine.

The invention also relates to a tor aérogénéra- comprising two to four rotors mounted on a support pivoting V, as described in EP-A-0761964.

Background Art To date, improving the competitiveness of the exploitation of wind energy requires lower costs and thus a simplification of mechanisms. We know, for example, multipole gearless generators of the German company ENERCON, which greatly simplify wind turbines.

It is also possible, adopting the concept of the rotors, described in EP-A-0761964, simplify and "alleviate the rotor by removing the mechanisms of variable pitch.

There are ways to avoid the runaway of a rotor fixed pitch and hollow blades.

One known means, described in document FR-A-2574113, involves the use of biplanar blades, which increases resistance to bending and torsion. This type of rotor blades biplanes also has the advantage of having a better glide like basis, compared to a conventional rotor blades monoplanar. Such rotor blades biplanes therefore has a high specific speed.

However, in FR-A-2,574,113 the problem of the connection of the two flat parts has not been fully resolved. On the other hand, the connections between the plane parts cause adverse parasitic drag. It was proposed to break the profiled connecting pieces to allow the free movement of flows of pressure and suction. Toute- times these holes further weaken the links.

Another known way to combat the runaway potential of a rotor fixed pitch is to cause a centrifugal air flow inside hollow blades. This technique is described in FR-A-1085771.

Lecture 1 invention

The invention is primarily intended to improve im- manufacturing and mechanical characteristics of multiplanes bladed rotors, especially to enable the economic production of the necessary contradiction rotating rotors provide wind turbines with two to four rotors. This is achieved by means of a rotor with at least two blades, characterized in that each blade is multiplanar and comprises:

- a spar in one piece, forming at the same time at least two planar portions, the connecting elements and a tail blade; and

- leading edges of airfoils and trailing edges laterally fixed on the flat parts of the spar. The materials used are those of the aerospace industry-based plastic compounds or materials having the advantage to be recycled or to be renewable, such as alloys of alumi- nium form of sheets or strips obtained by spinning, or glue-laminated wood.

The profiled elements that constitute the leading edges and trailing edges are made of several separate pieces or one piece, for example by spinning.

Preferably, in order to improve the aerodynamic characteristics, without weakening the bonds, profile elements are laterally secured to the spar connecting elements for Don-ner to the connecting elements of the profile shapes.

The connecting elements are preferably arranged obliquely in the direction of flow of the air stream between the upstream and downstream, each of these elements describing a conical surface at an angle differ- rent according to its distance from the axis of rotation of the rotor.

The beam then advantageously comprises three connecting elements respectively inclined by about 10 °, 15 ° and 20 ° relative to a direction perpendicular to a longitudinal axis of the blade, starting from the tail of the blade.

In a preferred embodiment of the invention, the leading edge members are hollow and form air channels open at the blade tip, the air intake window being pierced in the inner surface of said elements and normally closed by flexible valves forming springs, capable of opening under the effect of a predetermined pressure difference.

To ensure the best aerodynamic control as well as improved operational reliability, the planar portions are preferably twisted and exactly superimposed with respect to the direction of the true wind.

With respect to the relative wind, the flat bottom portion (or the wind) is slightly forward and the upper planar portion (or downwind) slightly back. When limit the rotational speed of the rotor from its optimum speed, the planar portions simultaneously drop and the upper planar portion is partially obscured by the lower planar portion (Figure 6 of the accompanying drawings). Optimal rotational speed of the flat parts form at least one venturi channel with respect to the relative wind direction and the flow velocity is increased in the space between the planar parts, a phenomenon which increases the lift and the engine torque ( Figure 5 of the accompanying drawings).

Depending on the case, the planar portions of each blade may be tapered or rectangular.

According to a preferred arrangement, the rotor comprises two blades whose blades tails are embedded in a scourge and joined by a tie which opposes the centrifugal force.

The invention also relates to a wind turbine, characterized in that it comprises at least two rotors associated with two multipole alternators with variable speed, fixed by means of two forks at the vertices of two arrows of a pivoting bracket V. in order to improve 1 aerodynamics multipole generators necessarily large in diameter, each multipole generator is contained in a rigid casing shell-shaped, attached to one of the forks. Each envelope may in particular have the shape of an ellipsoid of revolution, with horizontal axis, whose cross section is more or less flattened.

The beam on which are fixed the rotor blades tails is connected by a yoke to the shaft of the corresponding generator. The beam has a length substantially equal to the outer diameter of the alternator.

Guidance maneuvers or disorientation with respect to the wind direction is carried out by desynchronizing temporarily one of the generators in relation to each other, or by operating an airbrake flap attached to one of the arrows.

The aforementioned features can improve the manufacture and operation of a mean power of aero- generator rotors, eg 2000 kW. by wind of 13 m / sec .. In this case, the rotors are about 40 m in diameter and alternators 6 m in diameter.

This wind turbine rotors has the advantage of being simpler and less expensive than two conventional single rotor turbines scanning the same surface and brought to the same height of 50 m for example.

Brief Description of Drawings

We will now describe, as non-limiting examples, various embodiments of rotors according to the invention, applied to a wind turbine rotors, with reference to the accompanying drawings, wherein:

- Figure 1 is a front view of a wind turbine rotors, equipped with compliant rotors 1 'tion invention;

- Figure 2 shows the same wind turbine in profile;

- Figure 3 is a front view of the rotor and generator upwind of one wind turbine of Figures 1 and 2;

- Figure 4 is a front view of the rotor and generator upwind, also showing in phantom the position of the generator in the wind;

- Figure 5, already described, is a sectional view of the biplane blade of the rotor, showing the direction of flow in normal operation;

- Figure 6, already described, is a sectional view of the biplane blade of the rotor, showing the listened LEMENT an aerodynamic stall sequence;

- Figure 7 is an exploded perspective view of components of a biplane blade according to the invention;

- Figure 8 is a 'sectional view and in detail, illustrating the structure of a biplane blade plastic compound;

- Figure 9 is a sectional view of the same blade in its end part;

- Figure 10 is a sectional view of the cylindrical beam, illustrating the embedding of the blade shank;

- Figure 11 is a sectional view of one of the connecting elements between the two flat parts; - Figure 12 is a sectional view of the mold for manufacturing a plastic composite material spar of the blade biplane;

- Figure 13 is a view of section 1 'empi- LEMENT lamellae glued wooden constituting a variant embodiment of the same beam;

- Figure 14 is a front view in partial section showing an alternative embodiment of a rotor with blades biplanar whose planes are rectangulai- res and its alternator;

- Figure 15 shows in partial section, of a biplanar blades of the rotor of Figure 14, whose leading edges are hollow;

- Figure 16 is a sectional view of the biplane blade of Figure 15;

- Figure 17 is a detail view showing the air intake windows in the hollow blade biplane of Figures 15 and 16;

- Figure 18 is a sectional view of one of the connecting elements of the same blade biplane hollow.

Detailed description of preferred embodiments of one invention

Figures 1 and 2 show a aérogénéra- tor rotors, constituting an advantageous application of the rotor blades biplanar according to the invention.

It should be noted that applications of such a rotor are possible in other technical fields, such as rotors of rotorcraft or equipping certain tiltrotor aircraft.

Furthermore, the rotor according to the invention can equip wind turbines of various types, such as wind turbines with one or four rotors. The wind turbine rotors of Figures 1 and 2 comprises two rotors, each of which is formed by two blades biplanar 1, 2 and 3, 4 fixed pitch and at high speed. specific. Each rotor is associated with a multipole generator gearless variable speed 5, 6 fixed by means of a fork 7, 8 (Figure 4) at the top of each of the two arrows 9, 10 of a swivel bracket V 11.

According to the embodiment shown, the two rotors are coplanar and counterrotating and airbrake flap 12 is fixed to the arrow 9 of the rotor to the wind.

On the right of Figure 1, there is shown ^ fixing operation of the alternator 6 of the fork 8 of the arrow 10.

As is more particularly illustrated in Figures 4-6, each blade biplane, such as 1, is formed by a lower planar portion 13, or the wind, reached first by the wind, and an upper flat portion 14, or downwind, then reached by the wind. These two planar portions 13, 14 form a dihedron and are twisted and exactly superimposed with respect to the direction of the true wind. In the embodiment of Figures 3 to 11, the planar parts-13 and 14 are tapered.

The two flat portions 13 and 14 of the blade 1 converge to form a blade shank 18 which is embedded in a beam 19, itself immobilized by a yoke 20 on the shaft 21 of the alternator 5 corresponding.

The two blades 1 and 2 of each rotor are joined by a tie rod 26 which passes through the blades 18. This pulling tails 26 opposes the centrifugal force.

The planar portions 13, 14 are connected by connecting elements 15, 16, 17 (three in Figures 3 and 4). These elements 15, 16 and 17 are respectively inclined by about 10 °, 15 ° and 20 ° relative to a direction perpendicular to the longitudinal axis of the blade 1, starting from the shank 18 thereof.

The rotor and the stator of each alternator multipole 5, 6 are contained in a rigid casing shaped shell 22. In the embodiment of Figure 4, this envelope is in the form of an ellipsoid of revolution, of coincident horizontal axis with the alternator. Its section is more or less flattened. Each blade biplane, such as 1, comprises a longitudinal member 23 which is both one piece and the two planar portions 13, 14, the connecting elements 15, 16, 17 and the trailing blade 18. profiled elements leading edge 24 and trailing edge 25 are laterally fixed on the planar portions of the spar 23. 29 profile elements 30 are also fixed laterally on each of the connecting elements 15, 16, 17.

The spar 23, "variable or constant section, can be made flat, from plastic compounds, in a mold 54 (Figure 12) composed of detachable parts 55, 56, 57 which allow the mold. It can also be made bonded by stacking laminations 28 (Figure 13). in the embodiment illustrated in figures 2 to 11, the profiled elements of leading edge 24 and trailing edge 25 are blocks made of rigid plastic foam 31 and coated glass fiber 32. The beam 23 is made of carbon fiber around a rigid foam core 33.

According to an alternative embodiment is shown in Figures 14-18 a biplane blade partially hollow. The two flat portions 36, 37 of the blade are rectangular and twisted and the two biplanar blades are associated as above in a multipole generator 38, the rigid casing 22 has a flattened shape. The biplane blade 35 includes a spar 39 also made of carbon fibers and of the profiled elements of the leading edge 40 and trailing edge 41, made of folded aluminum sheet or extrusion. In the case where use of the profiled elements obtained by extrusion, they are twisted by twisting and hug the twisting of the spar.

Air intake window 42 are drilled in the lower surface of the two profiled elements of leading edge 40. These windows 42 open out into two air ducts 43, 44 open at the blade tip, formed in the profile members leading edge 40. the windows 42 are closed by flexible valves 45 forming springs.

The valves 45 are raised when the differential pressure between the inside of the air pipes 43, 44 and the pressure face pressure reaches a predetermined value. When the valves 45 open, for example by wind excessive force, there occurs a centrifugal air flow ejected at the blade tip, which limits the engine torque and the rotational speed of the rotor.

In Figure 15, there is shown in section the internal organization of the alternator 38 associated with the rotor blades to biplanar. More generally, the biplanar blades of each rotor may be replaced by multiplanes blades and notament triplanes, all the planar portions belong to a side member in a single piece on which are fixed leading edge profile members and trailing edge.

Finally, the invention relates not only to the rotors not fixed, but the rotors with variable pitch.

Claims

1. Rotor à at least two blades (1,2; 3,4; 35), caractérisé in that each blade (1,2; 3,4; 35) is multiplanar and comprises:
- a beam (23,39) in one pièce forming à both at least two plane portions (13, 14; 36, 37), connecting éléments (15,16, 17) and a blade shank (18); and - profilés éléments leading edges (24,40) and trailing edges (25,41) fixés latéralement on the flat portions of the beam (23, 39).
2 Rotor according to claim 1, wherein éléments profiles (29,30) are fixés latéralement on the connecting éléments (15,16,17) of beam (23,39), to give à these connecting éléments forms profilées.
3. Rotor according to any one of précédentes claims, wherein the connecting éléments (15,16,17) are disposés obliquely in the direction of the é coulement of the air flow between the upstream and downstream, each of these éléments décrivant a conical surface at an angle différent according to its distance from the axis of rotation of the rotor .
4. Rotor according to claim 3, wherein the side member (23,39) comprises three connecting éléments (15,16,17) inclinés about 10° respectively, and 15° 20° relative à a direction perpendicular à a longitudinal axis of the blade, starting from the tail of the blade (18).
5. Rotor according to any one of précédentes claims, wherein the leading edge éléments (40) are hollow and form air channels (43,44) open at the blade tip, the air intake fenêtres (42) étant percées in the intrados of said éléments and normally fermées by flexible valves forming springs ( 45) capable à open under the effect of a pressure prédéterminée différence.
6. Rotor according to any one of précédentes claims, wherein the planar portions (13, 14; 36, 37) form a dièdre and are vrillées and exactly superposées relative à réel the direction of wind.
7. Rotor according to claim 6, wherein the planar portions (13, 14) are effilées.
8. Rotor according to claim 6, wherein the planar portions (36, 37) are rectangular.
9. Rotor according to any one of précédentes claims comprising two blades (1, 2; 3, 4; 35) whose blades tails (18) are in a encastrées flé at (19) and réunies by a tie rod (26) which opposes à centrifugal force. 10. Aérogénérateur, caractérisé in that it comprises at least two rotors associés à two multipôles à variable speed alternators (5.6 ) fixés by intermédiaire two forks (7,8) at the vertices of two flèches (9,
10) of a swivel V medium (11).
11. Aérogénérateur according to claim 10, wherein each multipole generator (5,6) is contained in a rigid casing (22) shaped shell, on one of fixée forks (7,8).
12. Aérogénérateur according to claim 11, wherein each shell (22) has the shape of a ellipsoà "of révolution, à horizontal axis.
13. Aérogénérateur according to any one of claims 10 à 12 combiné with claim 8, wherein the fléau (19) is relié by a yoke ( 20) à the shaft (21) of one of the generators (5,6).
14. Aérogénérateur according to any one of claims 10 à 13, a power of approximately 2000 kW wherein the rotors are about 40 m diamètre and movements orientation or désorientation à relative wind direction are effectués in désynchronisant rotation régimes two generators (5,6).
PCT/FR1998/000091 1997-01-20 1998-01-19 Rotor with multiplane blades and wind power engine comprising such rotors WO1998031934A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR97/00521 1997-01-20
FR9700521A FR2758594B1 (en) 1997-01-20 1997-01-20 Improvements to twin-rotor wind generators

Publications (1)

Publication Number Publication Date
WO1998031934A1 true true WO1998031934A1 (en) 1998-07-23

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Country Status (2)

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FR (1) FR2758594B1 (en)
WO (1) WO1998031934A1 (en)

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EP2163760A1 (en) 2005-10-17 2010-03-17 Lm Glasfiber A/S Blade for a wind turbine rotor
CN101865077A (en) * 2010-06-23 2010-10-20 傅筱懿;傅剑 Fan blade structure of a wind generator
GB2470589A (en) * 2009-05-29 2010-12-01 Vestas Wind Sys As Branching spar wind turbine blade
CN102242693A (en) * 2010-05-12 2011-11-16 陈显刚 Wind wheel of wind driven generator
CN103807111A (en) * 2014-01-26 2014-05-21 桐乡市石门永新玻璃钢制品有限公司 Blade of 50KW wind generating set
US20170022967A1 (en) * 2015-07-21 2017-01-26 Winnova Energy LLC System and method for improving efficiency of turbine airfoils

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FR2798168B1 (en) * 1999-09-03 2001-11-02 Georges Jules Guerin Doublet decale rotor in the direction of rotation, indicated to capture the energy of the wind and convert it into another energy
WO2003025393A1 (en) * 2001-09-20 2003-03-27 Endre Mucsy Wind machine with pneumatic power transmission
FR2868483B1 (en) * 2004-03-30 2006-04-28 Gregoire Alexandroff realization means a type of wind turbine and quadrirotor implanter of these wind turbines offshore park
EP2153058A2 (en) * 2006-11-02 2010-02-17 Lignum Vitae Limited Wind rotor blade and wind turbine comprising such blade
WO2010141720A3 (en) * 2009-06-03 2011-03-24 Flodesign Wind Turbine Corp. Wind turbine blades with mixer lobes
EP2682256A1 (en) 2012-07-03 2014-01-08 Fiberline A/S A method of producing an assembly for use in a fibre reinforced structural element

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US4339230A (en) * 1980-04-22 1982-07-13 Hercules Incorporated Bifoil blade
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EP2163760A1 (en) 2005-10-17 2010-03-17 Lm Glasfiber A/S Blade for a wind turbine rotor
EP2172648A1 (en) 2005-10-17 2010-04-07 Lm Glasfiber A/S Blade for a wind turbine rotor
US8177517B2 (en) 2005-10-17 2012-05-15 Lm Glasfiber A/S Blade for a wind turbine rotor
US8469672B2 (en) 2005-10-17 2013-06-25 Lm Glasfiber A/S Blade for a wind turbine rotor
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US20100303631A1 (en) * 2009-05-29 2010-12-02 Vestas Wind Systems A/S Wind Turbine Rotor Blade Having Segmented Tip
CN102242693A (en) * 2010-05-12 2011-11-16 陈显刚 Wind wheel of wind driven generator
CN101865077A (en) * 2010-06-23 2010-10-20 傅筱懿;傅剑 Fan blade structure of a wind generator
CN103807111A (en) * 2014-01-26 2014-05-21 桐乡市石门永新玻璃钢制品有限公司 Blade of 50KW wind generating set
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FR2758594A1 (en) 1998-07-24 application
FR2758594B1 (en) 1999-04-02 grant

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