FR3064693A1 - DEVICE FOR CONTROLLING THE IMPACT OF THE WIND ON THE AUBES OF A VERTICAL AXIS WIND TURBINE - Google Patents

DEVICE FOR CONTROLLING THE IMPACT OF THE WIND ON THE AUBES OF A VERTICAL AXIS WIND TURBINE Download PDF

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Publication number
FR3064693A1
FR3064693A1 FR1700367A FR1700367A FR3064693A1 FR 3064693 A1 FR3064693 A1 FR 3064693A1 FR 1700367 A FR1700367 A FR 1700367A FR 1700367 A FR1700367 A FR 1700367A FR 3064693 A1 FR3064693 A1 FR 3064693A1
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Prior art keywords
wind
rotor
wind turbine
vertical axis
force
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FR1700367A
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French (fr)
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Henri Becu
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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 
    • F03D3/04—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
    • F03D3/0436—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 for shielding one side of the rotor
    • F03D3/0472—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 for shielding one side of the rotor the shield orientation being adaptable to the wind motor
    • 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
    • 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
    • F03D3/0409—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 surrounding the rotor
    • F03D3/0418—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 surrounding the rotor comprising controllable elements
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/101—Purpose of the control system to control rotational speed (n)
    • 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
    • F05B2270/327—Rotor or generator speeds
    • 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
    • F05B2270/50—Control logic embodiment by
    • F05B2270/508—Control logic embodiment by mechanical means, e.g. levers, gears or cams
    • 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
    • F05B2270/60—Control system actuates through
    • F05B2270/606—Control system actuates through mechanical actuators
    • 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

Abstract

La présente invention concerne un dispositif pour réguler la vitesse de rotation du rotor d'une éolienne à axe vertical en modifiant l'intensité de la force du vent sur les aubes de l'éolienne grâce à un demi cylindre ou autre forme similaire, modifiable de par sa position suivant l'intensité, la direction et le sens de la force du vent et non fixé au rotor de l'éolienne. Le demi-cylindre permet aux aubes de l'éolienne à axe vertical de remonter dans la direction et le sens du vent sans conséquence de la force du vent sur celles-ci. Le dispositif selon l'invention est particulièrement destiné à la régulation de vitesse de rotation et l'amélioration du rendement des éoliennes à axe vertical.The present invention relates to a device for regulating the rotational speed of the rotor of a vertical axis wind turbine by modifying the intensity of the force of the wind on the blades of the wind turbine by means of a half-cylinder or other similar, modifiable form of by its position according to the intensity, the direction and the direction of the force of the wind and not fixed to the rotor of the wind turbine. The half cylinder allows the blades of the vertical axis wind turbine to go up in the direction and direction of the wind without consequence of the force of the wind on them. The device according to the invention is particularly intended for the regulation of rotation speed and the improvement of the efficiency of wind turbines with vertical axis.

Description

® RÉPUBLIQUE FRANÇAISE® FRENCH REPUBLIC

INSTITUT NATIONAL DE LA PROPRIÉTÉ INDUSTRIELLE © N° de publication :NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(à n’utiliser que pour les commandes de reproduction)(to be used only for reproduction orders)

©) N° d’enregistrement national©) National registration number

064 693064 693

0036700367

COURBEVOIE © Int Cl8 : F03 D 3/04 (2017.01)COURBEVOIE © Int Cl 8 : F03 D 3/04 (2017.01)

DEMANDE DE BREVET D'INVENTIONPATENT INVENTION APPLICATION

A1A1

©) Date de dépôt : 03.04.17. (© Priorité : ©) Date of filing: 03.04.17. (© Priority: © Demandeur(s) : BECU HENRI — FR. © Applicant (s): BECU HENRI - FR. @ Inventeur(s) : BECU HENRI. @ Inventor (s): BECU HENRI. ©) Date de mise à la disposition du public de la demande : 05.10.18 Bulletin 18/40. ©) Date of public availability of the request: 05.10.18 Bulletin 18/40. ©) Liste des documents cités dans le rapport de recherche préliminaire : Se reporter à la fin du présent fascicule ©) List of documents cited in the preliminary search report: See the end of this booklet (© Références à d’autres documents nationaux apparentés : (© References to other related national documents: ® Titulaire(s) : BECU HENRI. ® Holder (s): BECU HENRI. ©) Demande(s) d’extension : ©) Extension request (s): © Mandataire(s) : BECU HENRI. © Agent (s): BECU HENRI.

DISPOSITIF POUR REGULER L'IMPACT DU VENT SUR LES AUBES D'UNE EOLIENNE A AXE VERTICALE.DEVICE FOR REGULATING THE IMPACT OF THE WIND ON THE BLADES OF A VERTICAL AXIS WIND TURBINE.

FR 3 064 693 - A1 (6/2 La présente invention concerne un dispositif pour réguler la vitesse de rotation du rotor d'une éolienne à axe vertical en modifiant l'intensité de la force du vent sur les aubes de l'éolienne grâce à un demi cylindre ou autre forme similaire, modifiable de par sa position suivant l'intensité, la direction et le sens de la force du vent et non fixé au rotor de l'éolienne. Le demi-cylindre permet aux aubes de l'éolienne à axe vertical de remonter dans la direction et le sens du vent sans conséquence de la force du vent sur celles-ci.FR 3 064 693 - A1 (6/2 The present invention relates to a device for regulating the speed of rotation of the rotor of a wind turbine with vertical axis by modifying the intensity of the force of the wind on the blades of the wind turbine by means of a half cylinder or other similar shape, modifiable by its position according to the intensity, direction and direction of the wind force and not attached to the rotor of the wind turbine. The half cylinder allows the blades of the wind turbine to vertical axis to go up in the direction and the direction of the wind without consequence of the force of the wind on them.

Le dispositif selon l'invention est particulièrement destiné à la régulation de vitesse de rotation et l'amélioration du rendement des éoliennes à axe vertical.The device according to the invention is particularly intended for regulating the speed of rotation and improving the efficiency of vertical axis wind turbines.

Figure FR3064693A1_D0001
Figure FR3064693A1_D0002

La présente invention concerne un dispositif pour réguler la vitesse de rotation du rotor d'une éolienne à axe vertical en modifiant l'intensité de la force du vent sur les aubes de l'éolienne grâce à un demi cylindre ou autre forme similaire, modifiable de par sa position suivant l'intensité, la direction et le sens de la force du vent et non fixé au rotor de l'éolienne. Le demi-cylindre permet aux aubes de l'éolienne à axe vertical de remonter dans la direction et le sens du vent sans conséquence de la force du vent sur celles-ci.The present invention relates to a device for regulating the speed of rotation of the rotor of a vertical axis wind turbine by modifying the intensity of the force of the wind on the blades of the wind turbine by means of a half cylinder or other similar form, modifiable from by its position according to the intensity, direction and direction of the wind force and not attached to the rotor of the wind turbine. The half-cylinder allows the blades of the wind turbine with vertical axis to go up in the direction and the direction of the wind without consequence of the force of the wind on them.

D'une façon générale, l'éolienne transforme la force du vent en une puissance sur un rotor en procurant un couple mécanique tel un couple produisant la rotation du vilebrequin d'un moteur.In general, the wind turbine transforms the force of the wind into a power on a rotor by providing a mechanical torque such as a torque producing the rotation of the crankshaft of an engine.

Une des difficultés de l'éolienne est de pouvoir fonctionner quelque soit la force du vent jusqu'à devoir s'arrêter en cas de tempête.One of the difficulties of the wind turbine is to be able to operate whatever the force of the wind until having to stop in the event of a storm.

Pour répondre à ces contraintes, les actuelles éoliennes à rotor horizontal ou vertical comme l'éolienne Darrieus utilisent les moyens suivants :To meet these constraints, current wind turbines with a horizontal or vertical rotor like the Darrieus wind turbine use the following means:

Variation du couple résistant au rotor en modifiant le champ magnétique dans le générateur de courantVariation of the resistance torque to the rotor by modifying the magnetic field in the current generator

Utilisation d'un frein mécanique qui consomme beaucoup d'énergieUse of a mechanical brake which consumes a lot of energy

Modification du pas de l'hélice pour une éolienne à axe horizontal du rotorModification of the propeller pitch for a wind turbine with horizontal rotor axis

Modification des aubes ou des panneaux positionnés sur le rotor d'une éolienne à axe verticalModification of blades or panels positioned on the rotor of a vertical axis wind turbine

Le dispositif selon l'invention permet de remédier à ces inconvénients :The device according to the invention overcomes these drawbacks:

il prévoit d'implanter un demi-cylindre ou autre forme similaire dont la position par rapport au rotor de l'éolienne à axe vertical est modifiable.it plans to install a half-cylinder or other similar shape whose position relative to the rotor of the vertical axis wind turbine can be modified.

Il comporte en effet selon une première caractéristique un dispositif avec une position modifiable sur le stator en tenant compte de la force, de la direction et du sens du vent.According to a first characteristic, it indeed comprises a device with a modifiable position on the stator taking account of the force, the direction and the direction of the wind.

La position de cet appareillage est modifiable afin de :The position of this device can be modified in order to:

Réguler la vitesse de rotation de l'éolienneRegulate the speed of the wind turbine

Dévier la direction du vent pour optimiser ou réguler la vitesse de rotation de l'éolienne Faire tout obstacle au vent en cas de tempêteDeviate the wind direction to optimize or regulate the speed of the wind turbine Make any obstacle to the wind in the event of a storm

Ce dispositif peut disposer de tout moyen déjà connus pour mesurer les vitesses de rotation des arbres tournants d'éolienne à axe vertical et positionner le demi-cylindre ou autre forme pour modifier la force du vent sur le rotor de l'éolienne à axe vertical.This device may have any means already known for measuring the rotational speeds of rotating shafts of a wind turbine with a vertical axis and positioning the half-cylinder or other shape to modify the force of the wind on the rotor of the wind turbine with a vertical axis.

La figure 1 annexée illustre le dispositif de l'invention.Figure 1 attached illustrates the device of the invention.

En référence à ce dessin, le dispositif comporte :With reference to this drawing, the device comprises:

en repères 4 et 2 , cet ensemble compose la partie fixe de l'éolienne qui est appelée le stator.in references 4 and 2, this assembly composes the fixed part of the wind turbine which is called the stator.

Il a pour rôle de maintenir l'axe vertical du rotor, repère 3.Its role is to maintain the vertical axis of the rotor, item 3.

en repère 1, une girouette se positionne dans la direction et le sens du vent.in reference 1, a wind vane is positioned in the direction and direction of the wind.

en repère 16, un régulateur à boules fixé en 17 sur l'axe du rotor. Plus le rotor tourne vite, plus les boules s'écartent de l'axe du rotor par la force centrifuge et ainsi la bague libre de rotation 15 se rapproche du repère 17 créant un déplacement linéaire et vertical.in reference 16, a ball regulator fixed at 17 on the axis of the rotor. The faster the rotor turns, the more the balls move away from the axis of the rotor by centrifugal force and thus the free rotation ring 15 approaches the reference 17 creating a linear and vertical movement.

En repère 12, un câble relié à la bague 15 passant dans les anneaux 14 et 11, est fixé au demi cylindre 6.In reference 12, a cable connected to the ring 15 passing through the rings 14 and 11, is fixed to the half cylinder 6.

en repère 9 , un câble fixé au demi cylindre 6 passant par la poulie 10 fixée à la girouette 1 et relié à la masse 8, et ainsi au repos et sans vent le diamètre du demi cylindre est aligné avec la direction de la girouette de par l'action de la masse du repère 8.in reference 9, a cable fixed to the half cylinder 6 passing through the pulley 10 fixed to the wind vane 1 and connected to the mass 8, and thus at rest and without wind the diameter of the half cylinder is aligned with the direction of the vane by the action of the landmark 8 mass.

en repère 5, nous pouvons avoir une génératrice de courant, une pompe,...in reference 5, we can have a current generator, a pump, ...

En conséquence, l'action de la force du vent sur l'éolienne sera telle que : la girouette, repère 1, sera positionnée en fonction du sens et de la direction du vent et la position modifiable du demi cylindre, repère 6, sera fonction de la position de la girouette, repère 1 et de la vitesse de rotation du rotor qui agit sur la position de la pièce du repère 15 du régulateur à boules, repère 16.Consequently, the action of the force of the wind on the wind turbine will be such that: the wind vane, reference 1, will be positioned according to the direction and direction of the wind and the modifiable position of the half cylinder, reference 6, will be function the position of the wind vane, item 1 and the speed of rotation of the rotor which acts on the position of the part of item 15 of the ball regulator, item 16.

Plus la force du vent est forte, plus le demi cylindre va se positionner pour faire obstacle à l'impact de la force du vent sur les aubes du rotor : il y a donc une régulation de la vitesse de rotation du rotor de l'éolienne en fonction de la force du vent.The stronger the wind force, the more the half cylinder will position to obstruct the impact of the wind force on the rotor blades: there is therefore a regulation of the speed of rotation of the wind turbine rotor depending on the strength of the wind.

Dans le cas extrême de la tempête, le demi cylindre fera quasiment obstacle à la force du vent du fait de la position de la bague, repère 15, tout en continuant à fournir un couple de puissance exploitable au rotor, en fonction de la vitesse de rotation du rotor.In the extreme case of the storm, the half cylinder will almost obstruct the force of the wind due to the position of the ring, item 15, while continuing to provide a couple of usable power to the rotor, depending on the speed of rotor rotation.

Le demi cylindre à position modifiable a aussi le grand avantage d'éviter aux aubes du rotor de remonter contre la force du vent, ce qui entraîne l'amélioration du rendement mécanique de l'éolienne.The modifiable half-cylinder also has the great advantage of preventing the rotor blades from going up against the force of the wind, which leads to an improvement in the mechanical efficiency of the wind turbine.

La position angulaire du demi cylindre peut être pilotée par un système électrique et asservie par des capteurs : pour la direction et le sens du vent, ainsi que la vitesse de rotation du rotor de l'éolienne.The angular position of the half cylinder can be controlled by an electrical system and controlled by sensors: for the direction and direction of the wind, as well as the speed of rotation of the wind turbine rotor.

Des ailettes orientables positionnées en périphérie du rotor et non fixées au rotor, améliorent la force du vent sur les aubes de l'éolienne à axe vertical et rendent l'éolienne peu visible de l'extérieur.Orientable fins positioned at the periphery of the rotor and not attached to the rotor, improve the force of the wind on the blades of the vertical axis wind turbine and make the wind turbine not very visible from the outside.

Un grillage autour de l'éolienne évite les chocs avec des oiseaux ou tout accident corporel.A screen around the wind turbine avoids collisions with birds or any personal accident.

Claims (3)

RevendicationsClaims 1. Dispositif pour réguler la vitesse de rotation d'une éolienne à axe vertical caractérisé en ce qu'il comporte :1. Device for regulating the speed of rotation of a vertical axis wind turbine, characterized in that it comprises: un demi-cylindre mobile (6) ou autre forme similaire, pour modifier l'impact de la force du vent sur les aubes du rotor (3) de l'éolienne une girouette (1) se positionnant dans la direction et le sens du vent un régulateur (16) à boules fixé en (17) sur l'axe du rotor ; plus le rotor tourne vite, plus les boules s'écartent de l'axe du rotor par la force centrifuge et ainsi la bague libre de rotation (15) se rapproche du repère (17) créant un déplacement linéaire et vertical un câble (12) relié à la bague (15), passant dans les anneaux (14 et 11), et fixé au demicylindre (6) pour positionner celui-ci en fonction de la vitesse de rotation du rotor (3) un câble (9) fixé au demi-cylindre (6) passant par la poulie (10) fixée à la girouette (1), et relié à la masse (8), de telle sorte qu'au repos et sans vent, le demi cylindre est aligné avec la direction de la girouette de par l'action de la masse (8).a movable half-cylinder (6) or other similar shape, to modify the impact of the force of the wind on the blades of the rotor (3) of the wind turbine a wind vane (1) positioning in the direction and the direction of the wind a ball regulator (16) fixed at (17) on the rotor axis; the faster the rotor turns, the more the balls move away from the axis of the rotor by centrifugal force and thus the free rotation ring (15) approaches the mark (17) creating a linear and vertical movement a cable (12) connected to the ring (15), passing through the rings (14 and 11), and fixed to the semi-cylinder (6) to position the latter according to the speed of rotation of the rotor (3) a cable (9) fixed to the half -cylinder (6) passing through the pulley (10) fixed to the wind vane (1), and connected to the mass (8), so that at rest and without wind, the half cylinder is aligned with the direction of the weather vane by the action of the mass (8). 2. Dispositif selon la revendication précédente caractérisé en ce qu'il comporte des ailettes orientables positionnées en périphérie du rotor et non fixées au rotor pour améliorer la force du vent sur les aubes de l'éolienne à axe vertical et pour rendre l'éolienne peu visible de l'extérieur.2. Device according to the preceding claim characterized in that it comprises orientable fins positioned at the periphery of the rotor and not fixed to the rotor to improve the force of the wind on the blades of the wind turbine with vertical axis and to make the wind turbine little visible from the outside. 3. Dispositif selon l'une des revendications précédentes caractérisé en ce qu'il comporte un grillage autour de l'éolienne pour éviter des chocs avec des oiseaux ou pour éviter tout accident corporel.3. Device according to one of the preceding claims, characterized in that it comprises a grid around the wind turbine to avoid impacts with birds or to avoid any bodily accident. 1/1 1/1
FR1700367A 2017-04-03 2017-04-03 DEVICE FOR CONTROLLING THE IMPACT OF THE WIND ON THE AUBES OF A VERTICAL AXIS WIND TURBINE Withdrawn FR3064693A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU211743U1 (en) * 2021-05-24 2022-06-21 Руслан Александрович Гросу Vertical wind turbine with increased performance
CZ309287B6 (en) * 2020-03-05 2022-07-20 Jan Louda Wind turbine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US318498A (en) * 1885-05-19 Windmill
FR433696A (en) * 1910-09-10 1912-01-13 Clement Gillotin Air or wind motor with automatically adjustable protective shield and finned cylinder
US1523295A (en) * 1923-10-27 1925-01-13 James T Ryan Windmill
GB281360A (en) * 1926-08-24 1927-11-24 Frank Leslie Sharp Improvements in windmills
WO2010134113A2 (en) * 2009-05-20 2010-11-25 Maurizio Mantovani Wind electric generator
FR2965592A1 (en) * 2010-10-01 2012-04-06 Michel Sene Wind turbine i.e. vertical axis wind turbine, for converting wind energy into electrical energy, has incident air closing units formed of closed surfaces orienting incident air stream on units toward unclosed part of rotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US318498A (en) * 1885-05-19 Windmill
FR433696A (en) * 1910-09-10 1912-01-13 Clement Gillotin Air or wind motor with automatically adjustable protective shield and finned cylinder
US1523295A (en) * 1923-10-27 1925-01-13 James T Ryan Windmill
GB281360A (en) * 1926-08-24 1927-11-24 Frank Leslie Sharp Improvements in windmills
WO2010134113A2 (en) * 2009-05-20 2010-11-25 Maurizio Mantovani Wind electric generator
FR2965592A1 (en) * 2010-10-01 2012-04-06 Michel Sene Wind turbine i.e. vertical axis wind turbine, for converting wind energy into electrical energy, has incident air closing units formed of closed surfaces orienting incident air stream on units toward unclosed part of rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ309287B6 (en) * 2020-03-05 2022-07-20 Jan Louda Wind turbine
RU211743U1 (en) * 2021-05-24 2022-06-21 Руслан Александрович Гросу Vertical wind turbine with increased performance

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