WO2012177111A2 - Convertible, self-adjusting, vertical-axis wind turbine combining savonius and darrieus configurations, and having a composite blade system - Google Patents

Convertible, self-adjusting, vertical-axis wind turbine combining savonius and darrieus configurations, and having a composite blade system Download PDF

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Publication number
WO2012177111A2
WO2012177111A2 PCT/MA2012/000008 MA2012000008W WO2012177111A2 WO 2012177111 A2 WO2012177111 A2 WO 2012177111A2 MA 2012000008 W MA2012000008 W MA 2012000008W WO 2012177111 A2 WO2012177111 A2 WO 2012177111A2
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WO
WIPO (PCT)
Prior art keywords
savonius
darrieus
configurations
turbine
blade
Prior art date
Application number
PCT/MA2012/000008
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French (fr)
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WO2012177111A3 (en
Inventor
Mohamed ENNAJI
Janah SAADI
Original Assignee
Université Hassan Ii - Casablanca
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Publication of WO2012177111A2 publication Critical patent/WO2012177111A2/en
Publication of WO2012177111A3 publication Critical patent/WO2012177111A3/en

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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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/064—Fixing wind engaging parts to rest of rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/212—Rotors for wind turbines with vertical axis of the Darrieus type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/213—Rotors for wind turbines with vertical axis of the Savonius type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/302—Segmented or sectional blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present patent relates to a new vertical axis turbine configuration shown in Figure (1), this device has significant advantages from the point of view of the operating range in speed and the power output, greater than those of other wind turbines vertical axis, this device has several advantages, which can be summarized in three points:
  • the proposed wind turbine is a variable geometry transformable device combined with a system that ensures this transformation, passing from one configuration to another according to the air flow rate and external conditions.
  • a turbine is a device for capturing the kinetic energy conveyed by the flows.
  • the present invention generally relates to the field of air and hydraulic turbines (wind turbine and tidal type applications), this device allows the transformation of energy. conveyed by an aerodynamic or hydrodynamic flow into exploitable mechanical energy, to drive rotary devices, either for the production of electricity, if it is combined with a generator, or a direct mechanical operation for pumping or driving applications.
  • This device consists of a rotor (1) rotatable about a main axis (2), the rotor is composed of at least two blades (3), each blade is composed in turn of several blade blocks (4) group in such a way that the vane geometry is semicircular in shape ( Figure A and B).
  • the blades are manufactured so that the weight of the blade is greater at the edge edge (5), having a geometric shape (6) as close as possible to a type GOE225 aerodynamic profile as is presented in Figure C, this profile configuration gives a better performance, as it is characterized by the advantage of being able to produce a torque (lift, drag) greater as shown in both figure Z.
  • the leading edge portion of the blade is manufactured in a thin shell geometric configuration (7), hollow to have the minimum weight, and the trailing edge portion in a solid configuration (8), with a bore (9) along the entire length of the blade for placing an assembly element (10) (eg: axis) which makes it possible to ensure freedom of rotation by means of a mechanical pivot connection on the z axis perpendicular to the aerodynamic profile surface, allowing a complete revolution, to allow transformation, as shown in Figure D.
  • assembly element 10
  • Figure D shows a cross sectional view of an elementary blade, showing its geometry and all the elements for its assembly.
  • the blade elements must be assembled as in Figure E, to form the blade of a semicircular shape, around a reference circle (11).
  • the turbine is assembled in such a way that the reference circle of the blading represents a center distance greater than the radius (R) of the main axis (2), knowing that the center distance (12) is the distance separating the main axis of the turbine, and the fictitious axis of the blade in the open initial position as shown in FIG. F.
  • the structure (1) (rotor) on which the bladed and fixed, will in turn be fixed to another fixed bearing structure (stator) which will allow the attachment of the turbine and also the drive of the system of use (generator: to produce electricity, pump or compressor: for pumping or compressing a fluid or simply to drive any mechanical system).
  • V v the speed of V flow.
  • centrifugal force is equal to:
  • the change in wind speed produces a proportional change in the rotational speed of the turbine, this change is due to the change in the aerodynamic parameters caused by the flow of wind around the wind turbine.
  • the turbine is in its initial configuration ( Figure G), and the wind begins to blow, the flow of wind around the turbine (14), exerts pressure on the blade, this pressure produces a lift force (15) turned it at a low speed.
  • Figures I, J, K, L, M and N show the progress of the transformation process.
  • the turbine takes different forms, from the inclination of the elements of the blading (the blades), during the initial configuration the turbine is similar to a Savonius, but once the process of transformation is triggered the turbine takes the appearance of a turbine composed of several Darrieus as shown in Figures 0, P, Q, R, S and T, this configuration produces a larger torque and it represents the sum of the torque produced by each turbine Darrieus , which makes the power produced by this device even more important.
  • This device has the advantage of being able to exploit the two forces resulting from the flow, the drag and the lift, through the transformation device which makes it possible to switch between two Savonius or Darrieus configurations, thus combining the advantage of the two configurations, the transformation is done in operation of the speed of the flow, in a first case the turbine is in its default configuration (the Savonius) as the flow rate increases, the turbine tends to increase its rotational speed.
  • the initial arrangement of the blades makes it possible to have an architecture similar to that of Savonius-type wind turbines, and with the increase in the speed of rotation, the device ensures a transformation of the turbine from a Savonius configuration to a Darrieus, to arrive at the profile of the desired configuration.
  • Figures N, O, P, Q and R show the two initial and final configurations of the turbine, in front view and tri-metric view in longitudinal section.
  • figure X represents the characteristic curves of the various wind turbine configurations, this figure allows us to see the interest of the combination of the two Darrieus and Savonius configuration, as well as the complementarity that this combination represents.
  • the Savonius and Darrieus wind turbines have the advantage of being able to exploit very weak winds (from 0.5m / S) that the other configurations can not exploit, their domains in speed complement each other, once the Savonius wind turbine enters into the extinction range, Darrieus resumes the relay and starts in turn, which is shown in Figure Yl.
  • the device disclosed in the patent represents another advantage over other combined turbine configurations (Fig. Y2) in that the transformation process provides continuity in power recovery (Fig. Y3).

Abstract

The invention relates to a device for converting the kinetic energy conveyed by an aerodynamic or hydrodynamic flow into usable kinetic energy, said device combining the two conventional Savonius and Darrieus configurations, said device being convertible, having a variable geometry, using a composite blade system, and being combined with a mechanical system which enables said conversion, switching from one configuration to the other according to the wind speed and the external conditions. Said turbine starts the cycle thereof in a Savonius configuration and, as the wind speed increases, transforms into a plurality of interlocking Darrieus turbines. This enables the device to use aerodynamic forces such as lift and drag, which complement one another on a number of levels.

Description

EOLIENNE A AXE VERTICAL, CONVERTIBLE, AUTOREGULE, COMBINANT UNE SAVONI US ET UNE DARRIEUS, A AUBAGE  VERTICAL, CONVERTIBLE, AUTORGANIZED AXLE WIND MACHINE COMBINING A US SAVONI AND A DARRIEUS, AT AUBAGE
COMPOSEE  MADE
Descriptif du dispositif: Description of the device:
Le présent brevet concerne une nouvelle configuration de turbine à axe vertical présenté sur la figure (1), ce dispositif présente d'important avantages du point de vue du domaine de fonctionnement en vitesse ainsi que la puissance produite, plus importants que celles des autres éoliennes à axe vertical, ce dispositif à plusieurs avantages, qui peuvent être résumés en trois points :  The present patent relates to a new vertical axis turbine configuration shown in Figure (1), this device has significant advantages from the point of view of the operating range in speed and the power output, greater than those of other wind turbines vertical axis, this device has several advantages, which can be summarized in three points:
• L'auto-adaptation aux conditions externes, liée au fait que ce dispositif change automatiquement de configuration.  • Self-adaptation to external conditions, due to the fact that this device automatically changes configuration.
• L' autorégulation assurée par le dispositif de transformation qui peut être lié a un système de contrôle mécatronique.  • The self - regulation provided by the transformation device that can be linked to a mechatronic control system.
• La continuité dans la production de l'énergie quelque soit le sens de l'écoulement et la vitesse du vent.  • The continuity in the production of the energy whatever the direction of the flow and the speed of the wind.
Ces avantages sont du au fait qu'elle combine les deux configurations classiques Savonius et Darrieus, ce qui fait qu'elle exploite les efforts aérodynamiques de type portance et traînée, qui présentent des complémentarités à plusieurs niveaux.  These advantages are due to the fact that it combines the two classic configurations Savonius and Darrieus, which makes it exploit the aerodynamic efforts of the lift and drag type, which have complementarities on several levels.
En effet l'éolienne proposée est un dispositif transformable à géométrie variable combiné à un système qui assure cette transformation, en passant d'une configuration à une autre selon la vitesse d'écoulement de l'air et les conditions externes.  Indeed the proposed wind turbine is a variable geometry transformable device combined with a system that ensures this transformation, passing from one configuration to another according to the air flow rate and external conditions.
Applications : Applications:
Production d'énergie électrique, pneumatique, hydraulique, pompage.  Production of electrical energy, pneumatic, hydraulic, pumping.
Une turbine est un dispositif de captation de l'énergie cinétique véhiculé par les écoulements, La présente invention concerne en générale, le domaine des turbines aérauliques et hydrauliques (des applications de type éoliennes et hydroliennes), ce dispositif permet la transformation de l'énergie véhiculé par un écoulement aérodynamique ou hydrodynamique en énergie mécanique exploitable, pour entraîner des dispositifs rotatifs, soit pour la production de l'électricité, si elle est combinée à une génératrice, ou une exploitation mécanique directe pour des applications de pompage ou d'entrainement en générale. A turbine is a device for capturing the kinetic energy conveyed by the flows. The present invention generally relates to the field of air and hydraulic turbines (wind turbine and tidal type applications), this device allows the transformation of energy. conveyed by an aerodynamic or hydrodynamic flow into exploitable mechanical energy, to drive rotary devices, either for the production of electricity, if it is combined with a generator, or a direct mechanical operation for pumping or driving applications. General.
Ce dispositif est constitué d'un rotor (1) mobile en rotation autour d'un axe principal (2), le rotor est composé d'au moins deux aubes (3), chaque aube est composé à son tour de plusieurs blocs de pale (4) regrouper d'une façon à ce que la géométrie de l'aubage soit de forme semi-circulaire (Figure A et B). This device consists of a rotor (1) rotatable about a main axis (2), the rotor is composed of at least two blades (3), each blade is composed in turn of several blade blocks (4) group in such a way that the vane geometry is semicircular in shape (Figure A and B).
Les pales sont fabriqué pour que le poids de la pale soit plus important au niveau de la partie bord de fuit (5), en ayant une forme géométrique (6) la plus proche possible à un profil aérodynamique de type GOE225 comme se qui est présenté dans la figure C, cette configuration de profil donne un meilleur rendement, vue qu'il se caractérise par l'avantage de pouvoir produire un couple (portance ; traînée) plus importante comme se que montre les deux figure Z. Pour avoir cette différence de poids, la partie bord d'attaque de la pale est fabriquée sous une configuration géométrique coque mince (7), creuse pour avoir le minimum de poids, et la partie bord de fuite sous une configuration pleine (8), avec un perçage (9) sur tout le long de la pale permettant de placer élément d'assemblage (10) (ex : Axe) qui permet d'assurer une liberté de rotation par une liaison mécanique pivot sur l'axe z perpendiculaire à la surface du profil aérodynamique, permettant une révolution complète, pour permettre la transformation, comme le présente la figure D. The blades are manufactured so that the weight of the blade is greater at the edge edge (5), having a geometric shape (6) as close as possible to a type GOE225 aerodynamic profile as is presented in Figure C, this profile configuration gives a better performance, as it is characterized by the advantage of being able to produce a torque (lift, drag) greater as shown in both figure Z. To have this difference in weight, the leading edge portion of the blade is manufactured in a thin shell geometric configuration (7), hollow to have the minimum weight, and the trailing edge portion in a solid configuration (8), with a bore (9) along the entire length of the blade for placing an assembly element (10) (eg: axis) which makes it possible to ensure freedom of rotation by means of a mechanical pivot connection on the z axis perpendicular to the aerodynamic profile surface, allowing a complete revolution, to allow transformation, as shown in Figure D.
La figure D représente une vue en coupe transversale d'une pale élémentaire, montrant sa géométrie ainsi que l'ensemble des éléments permettant son assemblage.  Figure D shows a cross sectional view of an elementary blade, showing its geometry and all the elements for its assembly.
Les éléments de pale doivent être assemblés comme dans la figure E, pour former l'aubage d'une forme semi-circulaire, autour d'un cercle de référence (11).  The blade elements must be assembled as in Figure E, to form the blade of a semicircular shape, around a reference circle (11).
La turbine est assemblée, d'une façon à ce que le cercle référence de l'aubage représente un entre-axe supérieur au rayon (R) de l'axe principale (2), sachant que l'entre- axe (12) est la distance séparant l'axe principale de la turbine, et l'axe fictif de l'aubage en position initiale ouverte comme présenté sur la figure F.  The turbine is assembled in such a way that the reference circle of the blading represents a center distance greater than the radius (R) of the main axis (2), knowing that the center distance (12) is the distance separating the main axis of the turbine, and the fictitious axis of the blade in the open initial position as shown in FIG. F.
La structure (1) (rotor) sur laquelle l'aubage et solidaire, sera fixé a son tour a une autre structure porteuse fixe (stator) qui permettra la fixation de la turbine et aussi l'entrainement du système d'utilisation (génératrice : pour produire l'électricité, pompe ou compresseur : pour le pompage ou la compression d'un fluide ou tout simplement pour entraîner un système mécanique quelconque).  The structure (1) (rotor) on which the bladed and fixed, will in turn be fixed to another fixed bearing structure (stator) which will allow the attachment of the turbine and also the drive of the system of use (generator: to produce electricity, pump or compressor: for pumping or compressing a fluid or simply to drive any mechanical system).
La liberté de déplacement des éléments des aubages (des pales par rapport à la structure (1)) sera conditionnée par un système d'attache élastique (13) (ressort, fil élastique, ...) qui permet d'attaché l'extrémité bord de fuite (point Ppale) de chaque pale à un point (Pstructure) de la structure (1), ce système d'attache élastique doit être caractérisé par une raideur spécifique, égale au rapport de l'effort centrifuge minimum à partir du quel la transformation doit se déclenché et de la déflexion résultante.  The freedom of movement of the elements of the blades (blades with respect to the structure (1)) will be conditioned by an elastic fastening system (13) (spring, elastic thread, ...) which allows the attached end trailing edge (point Ppale) of each blade at a point (Pstructure) of the structure (1), this elastic fastening system must be characterized by a specific stiffness, equal to the ratio of the minimum centrifugal force from which the transformation must be triggered and the resultant deflection.
^centrifuge min  centrifuge min
X  X
^centrifuge Tïl C' û R Centrifugal Til C '- R
Sachant que :  Knowing that :
R■ rayan, distance séparant le point (20) de l'axe principal  R ■ rayan, distance separating point (20) from the main axis
^centrifuge '· Rendement de la turbine  ^ centrifugal '· Turbine efficiency
m: la masse de l'aubage {des deux semi  m: the mass of the blading {of the two semi
— aubes et des axes de l'aubage)  - blades and axes of the blading)
Et la vitesse de rotation est égale à :  And the speed of rotation is equal to:
ϋ  ϋ
Sachant que :  Knowing that :
ω : la vitesse de rotation  ω: the speed of rotation
ϋ■ Rendement de la turbine  ϋ ■ Turbine efficiency
Vv: la vitesse de V écoulement. V v : the speed of V flow.
Et la force centrifuge est égale à :  And the centrifugal force is equal to:
k = m—  k = m-
R x  R x
Et au fure et à mesure que le processus de transformation avance les points (Ppale) - qui représente l'extrémité bord d'attaque de chaque pale se déplacent en rotation autour de l'axe porteur de chaque pale. And as the process of transformation advances the points (Ppale) - which represents the leading edge end of each blade moving in rotation around the bearing axis of each blade.
Le changement de la vitesse du vent produit un changement proportionnel de la vitesse de rotation de la turbine, ce changement est dû au changement des paramètres aérodynamiques causé par l'écoulement du vent autour de l'éolienne. The change in wind speed produces a proportional change in the rotational speed of the turbine, this change is due to the change in the aerodynamic parameters caused by the flow of wind around the wind turbine.
Dans un premier temps le dispositif est dans une configuration initiale de type Savonius (Figure A), l'écoulement du vent autour de l'aube produit un effort de type traînée, la distribution de l'effort sur la surface de l'aube exerce une pression sur cette surface, cette pression ayant le même sens que celui de l'écoulement, la turbine commence son cycle de rotation. At first the device is in an initial configuration of Savonius type (Figure A), the flow of the wind around the blade produces a drag-type force, the distribution of the force on the surface of the blade exerts a pressure on this surface, this pressure having the same direction as that of the flow, the turbine begins its cycle of rotation.
Au fure et à mesure que l'écoulement est plus important, la vitesse du vent augmente, la vitesse de rotation augmente aussi, un effort centrifuge est exercé sur les éléments de l'aubage (pales), due a la distribution du poids sur les pales. As the flow increases, the wind speed increases, the rotational speed also increases, a centrifugal force is exerted on the elements of the blade (blades), due to the distribution of the weight on the blades. blades.
Description de la transformation : Description of the transformation:
La turbine est dans sa configuration initiale (figure G), et le vent commence à souffler, l'écoulement du vent autour de la turbine (14), exerce une pression sur l'aubage, cette pression produit un effort de portance ( 15) la fait tourné à une vitesse faible. The turbine is in its initial configuration (Figure G), and the wind begins to blow, the flow of wind around the turbine (14), exerts pressure on the blade, this pressure produces a lift force (15) turned it at a low speed.
La vitesse du vent augmente se qui entraine une augmentation de la vitesse de rotation de la turbine, l'effort centrifuge (16) exercer sur les pale augmente aussi, une fois cet effort devient plus important que la raideur des éléments d'attaches ( 17), il entraine le déplacement circulaire des pales, l'angle de calage ( 18) (<Xj) de chaque pale varie (a, avec i indice de la pale) (Figure H), jusqu'à ce que l'effort centrifuge soit égal à l'effort exercé par l'élément d'attache sur la pale, ce qui freine le déplacement des pales, si le vitesse du vent continue à augmenté les pales continue la rotation, mais une fois la vitesse du vent est très importante, l'effort centrifuge fait incliner les pales jusqu'à ce que chaque pale atteint un angle de calage supérieur à l'angle de décrochage (a décrochage), a pale est en décrochage aérodynamique, donc la pale arrête sa rotation, et constitue un élément de freinage de la turbine, si toutes les pales décroches, l'effort de freinage deviens important, la vitesse de rotation baisse et les pales reprennent petit à petit leurs configurations initiales, et le dispositif est autorégulé par ce phénomène de décrochage aérodynamique.  The wind speed increases which causes an increase in the speed of rotation of the turbine, the centrifugal force (16) to exert on the blades also increases, once this stress becomes more important than the stiffness of the elements of fasteners (17 ), it causes the circular movement of the blades, the wedging angle (18) (<Xj) of each blade varies (a, with index of the blade) (Figure H), until the centrifugal force is equal to the force exerted by the fastening element on the blade, which hinders the movement of the blades, if the wind speed continues to increase the blades continue the rotation, but once the wind speed is very important , the centrifugal force tilts the blades until each blade reaches a stall angle greater than the stall angle (stall), a blade is aerodynamic stall, so the blade stops its rotation, and is a braking element of the turbine, if all the blades unhooks, the effort of The braking becomes important, the speed of rotation decreases and the blades gradually resume their initial configurations, and the device is self-regulating by this phenomenon of aerodynamic stall.
Les figures I, J, K, L, M et N montre le déroulement du procédé de transformation. Figures I, J, K, L, M and N show the progress of the transformation process.
Durant cette transformation, la turbine prend différentes formes, du a l'inclinaison des éléments de l'aubage (les pales), pendant la configuration initiale la turbine est similaire à une Savonius, mais une fois le processus de transformation se déclenche la turbine prend l'allure d'une turbine composé de plusieurs Darrieus comme ce qui est présenté sur les figure 0, P, Q, R, S et T , cette configuration produit un couple plus important et il représente la somme des couple produit par chaque turbine Darrieus, se qui rend la puissance produite par ce dispositif encore plus importante. During this transformation, the turbine takes different forms, from the inclination of the elements of the blading (the blades), during the initial configuration the turbine is similar to a Savonius, but once the process of transformation is triggered the turbine takes the appearance of a turbine composed of several Darrieus as shown in Figures 0, P, Q, R, S and T, this configuration produces a larger torque and it represents the sum of the torque produced by each turbine Darrieus , which makes the power produced by this device even more important.
Ce dispositif à l'avantage de pouvoir exploité les deux efforts résultants de l'écoulement, la traîné et la portance, à travers le dispositif de transformation qui permet de basculer entre deux configurations Savonius ou Darrieus, donc de combinée les avantage des deux configuration, la transformation se fait en fonctionnement de la vitesse de l'écoulement, dans un premier cas la turbine se trouve dans sa configuration par défaut (la Savonius) au fur-et-à-mesure que la vitesse de l'écoulement augmente, la turbine à tendance d'augmenté sa vitesse de rotation. This device has the advantage of being able to exploit the two forces resulting from the flow, the drag and the lift, through the transformation device which makes it possible to switch between two Savonius or Darrieus configurations, thus combining the advantage of the two configurations, the transformation is done in operation of the speed of the flow, in a first case the turbine is in its default configuration (the Savonius) as the flow rate increases, the turbine tends to increase its rotational speed.
La disposition initiale des aubes, permet d'avoir une architecture similaire à celle des turbines éoliennes de type Savonius, et avec l'augmentation de la vitesse de rotation, le dispositif assure une transformation de la turbine d'une configuration Savonius à une Darrieus, pour aboutir au profil de la configuration recherchée.  The initial arrangement of the blades makes it possible to have an architecture similar to that of Savonius-type wind turbines, and with the increase in the speed of rotation, the device ensures a transformation of the turbine from a Savonius configuration to a Darrieus, to arrive at the profile of the desired configuration.
Les figures N, O, P, Q et R montre les deux configurations initiale et final de la turbine, en vue frontale et vue tri-métrique en coupe longitudinale. Figures N, O, P, Q and R show the two initial and final configurations of the turbine, in front view and tri-metric view in longitudinal section.
Après étude des dispositions et configurations des éoliennes, on peut constater que les configurations Savonius et Darrieus représentent des complémentarités au niveau du domaine de fonctionnement et aussi au niveau de la puissance récupérée, la figure X représentes les courbes caractéristiques des différentes configurations de turbine éoliennes, cette figure nous permet de voir l'intérêt de la combinaison des deux configuration Darrieus et Savonius, ainsi que la complémentarité que représente cette combinaison. After studying the provisions and configurations of the wind turbines, we can see that the Savonius and Darrieus configurations represent complementarities in the operating domain and also in terms of the power recovered, figure X represents the characteristic curves of the various wind turbine configurations, this figure allows us to see the interest of the combination of the two Darrieus and Savonius configuration, as well as the complementarity that this combination represents.
Les éolienne Savonius et Darrieus ont l'avantage de pouvoir exploité des vents très faibles (à partir de 0,5m/S) que les autres configurations ne peuvent pas exploiter, leurs domaines en vitesse se complètent, une fois l'éolienne Savonius entre dans le domaine d'extinction, la Darrieus reprend le relais et démarre a son tour se qui est présenté sur la figure Yl. The Savonius and Darrieus wind turbines have the advantage of being able to exploit very weak winds (from 0.5m / S) that the other configurations can not exploit, their domains in speed complement each other, once the Savonius wind turbine enters into the extinction range, Darrieus resumes the relay and starts in turn, which is shown in Figure Yl.
Donc l'avantage le plus important des turbines combinées (figure Y2) est au niveau du domaine de fonctionnement en vitesse, qui est plus large par rapport aux autres configurations.  Therefore, the most important advantage of combined turbines (Figure Y2) is in the speed operating range, which is wider than other configurations.
Le dispositif présenté dans se brevet représente un autre avantage par rapport aux autres configurations de turbine combinées (figure Y2), du au fait que le processus de transformation assure une continuité au niveau de la récupération de la puissance (figure Y3).  The device disclosed in the patent represents another advantage over other combined turbine configurations (Fig. Y2) in that the transformation process provides continuity in power recovery (Fig. Y3).

Claims

Revendications : Claims:
1. Dispositif de transformation d'écoulement de fluide (gazeux ou liquide), composé d'aubage transformable, exploitant les deux efforts aérodynamiques portance et traînée, contrôlé par un système exploitant l'effort centrifuge comme acteur de la transformation. 1. Apparatus for transforming fluid flow (gaseous or liquid), composed of transformable vane, exploiting the two aerodynamic lift and drag forces, controlled by a system exploiting the centrifugal force as an actor of the transformation.
2. Dispositif selon la revendication (1), exploitant un aubage composé par de pales. 2. Device according to claim (1), using a bladed blade composed of blades.
3. Dispositif selon les revendications (1) et /ou (2), avec un processus de transformation rotatif des pales. 3. Device according to claims (1) and / or (2), with a rotary transformation process of the blades.
4. Dispositif selon l'une des revendications précédentes, exploitant un système d'attache comme système de rappel et de régulation. 4. Device according to one of the preceding claims, operating a fastening system as a reminder and control system.
5. Dispositif selon l'une des revendications précédentes, caractérisé par la configuration géométrique présenté dans le descriptif, caractérisé par un aubage en matériau composite, plastique, ferrique ou autre matériau offrant des caractéristiques similaires à ceux décrit précédemment. 5. Device according to one of the preceding claims, characterized by the geometric configuration shown in the description, characterized by a blade of composite material, plastic, ferric or other material with characteristics similar to those described above.
Figure imgf000007_0001
Figure imgf000007_0001
Figure C Figure C
Figure imgf000008_0001
Figure imgf000008_0001
Figure C  Figure C
PCT/MA2012/000008 2011-06-24 2012-06-22 Convertible, self-adjusting, vertical-axis wind turbine combining savonius and darrieus configurations, and having a composite blade system WO2012177111A2 (en)

Applications Claiming Priority (2)

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MA33978A MA33875B1 (en) 2011-06-24 2011-06-24 Vertical axis wind turbine, convertible, self-regulating, combining a soapius and a darrieus, with foldable blade.
MA33978 2011-06-24

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
ES2477115A1 (en) * 2014-05-30 2014-07-15 Universidad De La Rioja Vertical axis wind generator (Machine-translation by Google Translate, not legally binding)
JP2015108364A (en) * 2013-12-03 2015-06-11 通孝 月岡 Savonius wind mill

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Publication number Priority date Publication date Assignee Title
DE19501036A1 (en) * 1995-01-16 1995-07-13 Richter Wolfgang Radially streamed vertical axis wind-power converter
US7362004B2 (en) * 2003-07-29 2008-04-22 Becker William S Wind turbine device
JP2007270746A (en) * 2006-03-31 2007-10-18 Univ Nihon Vertical wind/water turbine having variable blade
JP4041838B2 (en) * 2007-01-10 2008-02-06 シーベルインターナショナル株式会社 Wind turbine and wind power generator for wind power generation

Non-Patent Citations (1)

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None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015108364A (en) * 2013-12-03 2015-06-11 通孝 月岡 Savonius wind mill
ES2477115A1 (en) * 2014-05-30 2014-07-15 Universidad De La Rioja Vertical axis wind generator (Machine-translation by Google Translate, not legally binding)

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