FR2752443A1 - Dual rotor wind generator for use on or off-shore - Google Patents

Dual rotor wind generator for use on or off-shore Download PDF

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Publication number
FR2752443A1
FR2752443A1 FR9610269A FR9610269A FR2752443A1 FR 2752443 A1 FR2752443 A1 FR 2752443A1 FR 9610269 A FR9610269 A FR 9610269A FR 9610269 A FR9610269 A FR 9610269A FR 2752443 A1 FR2752443 A1 FR 2752443A1
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France
Prior art keywords
rotors
rotor
wind
aerogenerator
pitch
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Granted
Application number
FR9610269A
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French (fr)
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FR2752443B1 (en
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Alexandroff Gregoire
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Priority to FR9610269A priority Critical patent/FR2752443B1/en
Priority claimed from DE69620081T external-priority patent/DE69620081T2/en
Publication of FR2752443A1 publication Critical patent/FR2752443A1/en
Application granted granted Critical
Publication of FR2752443B1 publication Critical patent/FR2752443B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/0608Rotors characterised by their form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D13/00Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT 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 parallel to the air flow entering the rotor
    • F03D7/0204Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • 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
    • F05B2240/9151Mounting on supporting structures or systems on a stationary structure which is vertically adjustable telescopically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • 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
    • 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 GAS [GHG] EMISSIONS, 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
    • 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 GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/728Onshore wind turbines

Abstract

The wind generator includes two rotors (1,2) which are supported by arms (9,10) in a V-formation. The arms are articulated on a base (11) which is able to swivel about a vertical column (6) on rollers. One rotor (1) is located to windward and the second (2) is slightly downwind. The swivelling of the whole structure is controlled either by the use of an air brake (4) or by varying the drag of one rotor. The supporting arms (9,10) are normally held in the V-position by a tie bar (13) and a stay (14) but may be lowered for maintenance of the rotors.

Description

L'invention est relative à des perfectionnememts aux aérogénérateurs birotors destinés à rendre leur fabrication plus économique et leur exploitation plus sûre . The invention relates to improvements to twin-rotor wind turbines intended to make their production more economical and their operation safer.
L'agencement ,objet de l'invention ,dérive directement de celui décrit dans la demande de brevet Français n" 9510132
Des essais en soufflerie ,réalisés antérieurement par E.D.F. ont mis en évidence un gain de rendement de l'ordre de 10% d'un birotor composé de deux rotors contrarotatifs dans le même plan et rapprochés tangentiellement ,par rapport à deux rotors isolés
A ce jour ,il n'a pas été possible d'exploiter cet avantage car en pratique ,le plan de rotation des deux rotors se trouve en avant ou en arrière de la structure porteuse et de l'axe de pivotement.
The arrangement which is the subject of the invention derives directly from that described in French patent application no. 9510132
Wind tunnel tests, previously carried out by EDF, have shown an efficiency gain of around 10% of a birotor composed of two counter-rotating rotors in the same plane and brought together tangentially, compared to two isolated rotors
To date, it has not been possible to exploit this advantage because in practice, the plane of rotation of the two rotors is located in front of or behind the support structure and the pivot axis.
De ce fait, il n'est pas possible de modifier facilement l'attitude par rapport à la direction du vent ,par exemple pour faire pivoter le plan de rotation des deux rotors en position neutre dans le lit du vent
Dans la demande de brevet antérieure on a décrit un birotor à symétrie axiale équilibré et donc pilotable .Ce birotor est caractérisé en ce que les deux rotors sont fixés de part et d'autre d'une structure pivotante en V dans deux plans paralelles . Ce montage permet notamment l'assemblage de grands rotors mais ne donne pas de gain de rendement qui ne peut être obtenu que si les deux rotors tournent dans le même plan
Il est géométriquement possible d'assembler deux rotors dans le plan passant exactement par l'axe de pivotement à condition de couder le support et d'équilibrer celui ci par un contrepoids
Selon l'invention , il s'avère beaucoup plus simple de décaler les deux flèches d'un support en V afin de localiser le plan de rotation commun des deux rotors entre les plans de ces flèches et donc exactement sur l'axe de pivotement
L'invention s'applique à des aérogénérateurs birotors dont les deux ensembles rotor-nacelle ont une masse pouvant être supportée par deux flèches composée chacune d'un seul tube d'acier de gros diamètre
Selon une autre caractéristique de l'invention les deux rotors sont disposés alternativement l'un au-vent d'une fleche du support en V ,l'autre sous-le-vent de l'autre flèche. Cette configuration caractéristique est obtenue en articulant les pieds des fleches au deux angles opposés de l'embase carrée qui pivote autour du fût fixe et repose sur une couronne de galets
Selon une autre caractéristique de l'invention les deux fleches de section sensiblement constante sont contreventées par une traverse horizontale intermediaire qui pivote au sommet du fût et par des contrefiches obliques qui les réunit aux deux autres angles de l'embase carrée
Bien entendu ,comme dans la description antérieure les deux fleches articulées sur l'embase peuvent être levées ou abaissées pour les opérations de maintenance
L'invention est applicable a tous les types de rotors et de dispositifs electro-mécaniques associés
Selon une caractéristique de l'invention ,dans le cas de l'association de deux rotors à pas variable
Le pilotage par rapport å la direction du vent s'opère en faisant varier le pas d'un des rotors par rapport à l'autre , par exemple en mettant l'un des rotors en drapeau on obtient le pivotement de l'ensemble dans le lit du vent
Selon une autre caractéristique de l'invention on peut associer un rotor à pas fixe et un rotor à pas variable .Dans ce cas ,le pilotage s'effectue par modification du pas du rotor a pas variable
Selon une autre caractéristique de l'invention on peut associer deux rotors à pas entièrement fixe .Dans ce cas le pilotage est obtenu par la commande d'un volet aérofrein formant dérive articulé le long d'une des flèches et actionné par un verin fixe sur la traverse
On peut egalement créer une dyssimetrie aérodynamique par le gonflement d'une enveloppe pneumatique fixée le long d'une des flèches
On notera qu'il est possible de faire se placer dans le lit du vent un birotor dote de rotors bipales à pas fixe dotés de freins en immobilisant.
Therefore, it is not possible to easily change the attitude relative to the wind direction, for example to rotate the plane of rotation of the two rotors in neutral position in the wind bed
In the previous patent application, a birotor with balanced axial symmetry and therefore controllable has been described. This birotor is characterized in that the two rotors are fixed on either side of a V-shaped pivoting structure in two parallel planes. This assembly allows in particular the assembly of large rotors but does not give any gain in efficiency which can only be obtained if the two rotors rotate in the same plane
It is geometrically possible to assemble two rotors in the plane passing exactly by the pivot axis on condition of bending the support and balancing it by a counterweight
According to the invention, it turns out to be much simpler to offset the two arrows of a V-shaped support in order to locate the common plane of rotation of the two rotors between the planes of these arrows and therefore exactly on the pivot axis.
The invention applies to twin-rotor wind turbines in which the two rotor-nacelle assemblies have a mass which can be supported by two arrows, each consisting of a single large diameter steel tube.
According to another characteristic of the invention the two rotors are arranged alternately one upwind of an arrow of the V-shaped support, the other downwind of the other arrow. This characteristic configuration is obtained by articulating the feet of the arrows at the two opposite angles of the square base which pivots around the fixed shaft and rests on a ring of rollers
According to another characteristic of the invention, the two arrows of substantially constant section are braced by an intermediate horizontal crosspiece which pivots at the top of the barrel and by oblique struts which joins them at the two other angles of the square base.
Of course, as in the previous description, the two arrows articulated on the base can be raised or lowered for maintenance operations
The invention is applicable to all types of rotors and associated electro-mechanical devices
According to a characteristic of the invention, in the case of the association of two rotors with variable pitch
Piloting with respect to the wind direction operates by varying the pitch of one of the rotors relative to the other, for example by feathering one of the rotors, the assembly is pivoted in the wind bed
According to another characteristic of the invention, a fixed pitch rotor and a variable pitch rotor can be combined. In this case, the control is effected by modifying the pitch of the variable pitch rotor.
According to another characteristic of the invention, two rotors with entirely fixed pitch can be associated. In this case, control is obtained by controlling an air brake flap forming a drift articulated along one of the arrows and actuated by a fixed jack on the crossing
One can also create an aerodynamic dyssimetry by the swelling of a pneumatic envelope fixed along one of the arrows
It will be noted that it is possible to place a birotor fitted with fixed-pitch two-bladed rotors fitted with brakes while immobilizing in the wind bed.
un rotor en position verticale et l'autre en position horizontale ,les pales etendues de ce dernier formant derive . one rotor in the vertical position and the other in the horizontal position, the extended blades of the latter forming a fin.
Au points de vue structural et économique ,un birotor ne peut être avantageux de façon significative par rapport à deux monorotors que si le coût du support commun est minimisé
Pour resister aux efforts de renversement doubles la fondation aura selon l'invention une forme cruCiforme et sera realisee en béton armé ainsi que le fût axial .Cette assise sera ancrée dans le terrain par 5 pieux par exemple
L'invention sera mieux comprise par la description et les dessins annexés d'un aerogenérateur birotor de moyenne puissance compose de deux rotors indifferemment à pas fixe ou variable , bipales ou tripales et aux pales fabriquées en bois plastifié , en métal ,ou en matériaux composites On à représente egalement un volet d'orientation
La figure 1 est une vue de face de l'aérogenérateur birotor
La figure 2 est une vue de profil du même aêrogénérateur
La figure 3 est une vue en plan du même aérogénérateur montrant la position d'équilibre face au vent et en pointillé ,une position d'evitement .
From a structural and economic point of view, a birotor can only be significantly advantageous compared to two monorotors if the cost of the common support is minimized
To resist double overturning efforts, the foundation will have a cruCiforme shape according to the invention and will be made of reinforced concrete as well as the axial shaft. This foundation will be anchored in the ground by 5 piles for example
The invention will be better understood from the description and the accompanying drawings of a medium-power birotor aerogenerator composed of two rotors, either fixed or variable pitch, two-bladed or three-bladed, and blades made of plasticized wood, metal, or composite materials. There is also an orientation component
Figure 1 is a front view of the birotor wind generator
Figure 2 is a side view of the same wind generator
Figure 3 is a plan view of the same wind turbine showing the equilibrium position facing the wind and in dotted lines, an avoidance position.
La figure 4 est une vue d'ensemble de I'aerogenérateur birotor
L'aérogénérateur birotor est forme de l'assemblage de deux rotors(l)et(2) sur un support orientable en V(3) .
Figure 4 is an overview of the birotor wind generator
The birotor aerogenerator is formed by the assembly of two rotors (l) and (2) on a swivel support in V (3).
Les deux rotors sont contrarotatifs et leur plans de rotation confondus passent par l'axe de pivotement et de symetrie X-Y . Le rotor(l) est au vent et le rotor(2) sous le vent
Les deux nacelles(4)et(5)qui renferment les organes électro-mécaniques sont fixées en sens inverse aux sommets de deux flèches tubulaires(6)et(7) ces flèches sont fixees et articulées aux deux angles(8)et(9) d'une embase carree(l0) .
The two rotors are counter-rotating and their planes of rotation combined pass through the pivot axis and of symmetry XY. The rotor (l) is in the wind and the rotor (2) in the wind
The two nacelles (4) and (5) which contain the electro-mechanical members are fixed in opposite directions to the tops of two tubular arrows (6) and (7) these arrows are fixed and articulated at the two angles (8) and (9 ) a square base (l0).
L'embase(10) pivote sur un couronne de galets(11). The base (10) pivots on a ring of rollers (11).
Les deux flèches(6)et(7) sont réunies et contreventees par la traverse(12) qui tourne au sommet d'un fût fixe(13) solidaire d'une base de fondation(14) cruciforme qui repose sur des pieux(15) . The two arrows (6) and (7) are joined and braced by the crosspiece (12) which turns at the top of a fixed shaft (13) secured to a cruciform foundation base (14) which rests on piles (15 ).
Le volet aérofrein(16) est actionné par le vérin(l7). The air brake flap (16) is actuated by the cylinder (l7).
On a représenté comme variante une enveloppe pneumatique gonflable(18). As an alternative, an inflatable pneumatic envelope (18) has been shown.
On a représente en pointillé(l9) la fleche(7)
La nacelle(5) et le rotor(2) abaissés au voisinage du sol
We have represented in dotted line (l9) the arrow (7)
The nacelle (5) and the rotor (2) lowered near the ground

Claims (8)

REVENDICATIONS
1) Aerogénérateur birotor à symétrie axiale caractérisé en ce que les plans de rotation des deux rotors (l)et(2) sont confondus et passent par l'axe central de pivotement X-Y 1) Twin-rotor aerogenerator with axial symmetry characterized in that the planes of rotation of the two rotors (l) and (2) coincide and pass through the central pivot axis X-Y
2) Aérogénérateur birotor selon la revendication 1 caractérisé en ce que l'un des rotors(l) est situé au vent ,et l'autre(2) sous le vent. Le support en V(3) qui porte les deux nacelles(4)et(5) est composé de deux fleches(6)et(7) tubulaires fixées et articulees aux deux angles d'une embase carrée(l0) reposant sur une couronne de galets(ll). 2) birotor wind turbine according to claim 1 characterized in that one of the rotors (l) is located in the wind, and the other (2) in the wind. The V-shaped support (3) which carries the two nacelles (4) and (5) is composed of two tubular arrows (6) and (7) fixed and articulated at the two angles of a square base (10) resting on a crown pebbles (ll).
Le support en V(3) est contrevente par une traverse pivotante(12) tournant au sommet du fût axial(l3) encastré dans une assise de fondation cruciforme(14).The V-shaped support (3) is braced by a pivoting crosspiece (12) rotating at the top of the axial shaft (13) embedded in a cruciform foundation seat (14).
3) Aérognérateur birotor selon les revendications 1 et 2 caractérise en ce que le plan de rotation commun des rotors(l)et(2) est situé dans la partie médiane et que par consequent le rotor(l) est situé en avant de la fleche(6) et le rotor(2) en arriere de la fleche(7).  3) birotor aerogenerator according to claims 1 and 2 characterized in that the common plane of rotation of the rotors (l) and (2) is located in the middle part and that therefore the rotor (l) is located in front of the arrow (6) and the rotor (2) behind the arrow (7).
4) Aérogénérateur birotor selon les revendications 1,2,3 caractérisé en ce que les rotors(l)et(2) sont à pas variable et que l'on commande l'attitude générale par rapport à la direction du vent en faisant varier le pas de l'un des rotors par rapport à l'autre  4) birotor aerogenerator according to claims 1,2,3 characterized in that the rotors (l) and (2) are with variable pitch and that one controls the general attitude with respect to the wind direction by varying the not from one of the rotors relative to the other
5) Aérogénerateur birotor selon les revendications 1,2,3 caractérisé en ce que l'un des rotors est à pas fixe et l'autre à pas variable ,et que l'on commande l'attitude de l'ensemble en modifiant le pas du rotor à pas variable 5) birotor aerogenerator according to claims 1,2,3 characterized in that one of the rotors is with fixed pitch and the other with variable pitch, and that the attitude of the assembly is controlled by modifying the pitch variable pitch rotor
6) Aérogénérateur birotor selon les revendications 1,2,3 caractérise en ce que les deux rotors sont à pas fixe 6) birotor aerogenerator according to claims 1,2,3 characterized in that the two rotors are with fixed pitch
7) Aérogénerateur birotor selon les revendications 1,2,3 caracterise en ce que les deux rotors sont à pas fixe et que l'orientation de l'ensemble par rapport à la direction du vent est obtenue par l'action d'un aérofrein formant dérive(l6) dont l'angle de braquage est variable et commande par un vérin(17)  7) Two-rotor aerogenerator according to claims 1,2,3 characterized in that the two rotors are with fixed pitch and that the orientation of the assembly relative to the wind direction is obtained by the action of an air brake forming fin (l6) whose steering angle is variable and controlled by a jack (17)
8) Aérogenerateur birotor selon l'ensemble des revendications précédentes caractérisé en ce que la desorientation de l'ensemble par rapport à la direction du vent est obtenue par le gonflement d'un boudin pneumatique fixe le long de l'une des deux flèches  8) Two-rotor wind generator according to all of the preceding claims, characterized in that the disorientation of the assembly with respect to the wind direction is obtained by the inflation of a fixed pneumatic tube along one of the two arrows
FR9610269A 1996-08-19 1996-08-19 Improvements on birotors aerogenerators Expired - Fee Related FR2752443B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9610269A FR2752443B1 (en) 1996-08-19 1996-08-19 Improvements on birotors aerogenerators

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9610269A FR2752443B1 (en) 1996-08-19 1996-08-19 Improvements on birotors aerogenerators
DE69620081T DE69620081T2 (en) 1995-08-28 1996-08-26 Doppeltradwindkraftturbine
EP96401818A EP0761964B1 (en) 1995-08-28 1996-08-26 Wind turbine with twin rotor
DK96401818T DK0761964T3 (en) 1995-08-28 1996-08-26 Wind turbine with double rotor

Publications (2)

Publication Number Publication Date
FR2752443A1 true FR2752443A1 (en) 1998-02-20
FR2752443B1 FR2752443B1 (en) 2000-03-31

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FR9610269A Expired - Fee Related FR2752443B1 (en) 1996-08-19 1996-08-19 Improvements on birotors aerogenerators

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FR (1) FR2752443B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036299A1 (en) * 1998-12-16 2000-06-22 Obec Domanín Facility for using wind energy
EP1035325A1 (en) * 1999-03-09 2000-09-13 Hartwig Dr.-Ing. Irps Transportable wind turbine
GB2402109A (en) * 2003-05-27 2004-12-01 Ocean Synergy Ltd Multiple turbine offshore support structure
FR2938305A1 (en) * 2008-11-12 2010-05-14 Olivier Christian Leopold Laffitte AEROGENERATOR BIROTOR "IN V" BIPALS HAS OSCILLATING HUBS ON STRUCTURE LESTEE FLOTTANT TENDU
US8471399B2 (en) 2007-11-19 2013-06-25 Windsea As Floating wind power apparatus
WO2014060420A1 (en) 2012-10-15 2014-04-24 Sereo Sas V-shaped, bi-rotor wind generator on a spar floating structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE549618C (en) * 1930-11-22 1932-04-29 Hermann Honnef Wind power machine, the tips of which are connected to each other by a wheel rim
US4329115A (en) * 1981-02-02 1982-05-11 Grumman Aerospace Corporation Directionally stabilized wind turbine
GB2123488A (en) * 1980-07-30 1984-02-01 Carter Warne Jun Wind driven generator apparatus
EP0149467A1 (en) * 1984-01-16 1985-07-24 FIAT AVIAZIONE S.p.A. Wind motor provided with a device for its automatic alignment with the wind

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE549618C (en) * 1930-11-22 1932-04-29 Hermann Honnef Wind power machine, the tips of which are connected to each other by a wheel rim
GB2123488A (en) * 1980-07-30 1984-02-01 Carter Warne Jun Wind driven generator apparatus
US4329115A (en) * 1981-02-02 1982-05-11 Grumman Aerospace Corporation Directionally stabilized wind turbine
EP0149467A1 (en) * 1984-01-16 1985-07-24 FIAT AVIAZIONE S.p.A. Wind motor provided with a device for its automatic alignment with the wind

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036299A1 (en) * 1998-12-16 2000-06-22 Obec Domanín Facility for using wind energy
EP1035325A1 (en) * 1999-03-09 2000-09-13 Hartwig Dr.-Ing. Irps Transportable wind turbine
GB2402109A (en) * 2003-05-27 2004-12-01 Ocean Synergy Ltd Multiple turbine offshore support structure
US8471399B2 (en) 2007-11-19 2013-06-25 Windsea As Floating wind power apparatus
FR2938305A1 (en) * 2008-11-12 2010-05-14 Olivier Christian Leopold Laffitte AEROGENERATOR BIROTOR "IN V" BIPALS HAS OSCILLATING HUBS ON STRUCTURE LESTEE FLOTTANT TENDU
FR2938306A1 (en) * 2008-11-12 2010-05-14 Olivier Christian Leopold Laffitte Dual rotor aerogenerator for forming offshore wind power plant, has rotors placed on stretched floating structure, where structure swivels around sleeve located above water surface, to orient upper part of structure opposite to wind
WO2014060420A1 (en) 2012-10-15 2014-04-24 Sereo Sas V-shaped, bi-rotor wind generator on a spar floating structure

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