DE102009013161A1 - Hub-airfoil system e.g. video system and camera system, for controlling e.g. wind energy, in wind turbine, has energy convertors and energy storing device arranged under base of base body in closed housing - Google Patents

Abstract

The system (2) has three energy converters, where one of the energy converters is arranged in an upper end of a base body. Another energy converter e.g. hydraulic motor, converts an energy temporarily stored in the energy storing device and generates a mechanically rotational energy. A protective housing is located in a surface or a ground or on a platform or cover of a vessel and protects operator and the system. The energy converters and energy storing device are arranged under a base of the base body in a closed housing.

Description

1. The invention

The The invention relates to a lift wing system for use of wind energy and other flow energies. The invention is suitable for all performance classes. The focus lies however with the reliable mastery of achievements in the double-digit megawatt range, especially offshore.

2. State of the art and criticism of the state of the technique

In the experts agree that the trend for future Wind turbines, especially offshore, from compelling economic Reasons for higher plant performance. six Megawatts at Enercon and REpower are currently at the top of the stand of the technique. Systems up to 8 MW are planned, 10 MW and more being considered. The feasibility of turbines up to 20 megawatts will be in largest European research program for large turbines "Upwind" discussed. From the point of view of the state of the art this is still "stratosphere". One thing is certain: easy upscaling conventional Technology is not enough for such high output ranges out. The conceivable strategy "More steel", um making all elements and aggregates sturdier and stiffer, shifting the problem a piece, but it does not solve and is in conflict with the high-level objectives "Less Weight "and" cost reduction ". The overall costs must always be kept in mind. These include research, development and testing costs, Testing costs, production costs, transport and installation costs, Operating and maintenance costs, costs of unavailability in case of production losses, repair costs, insurance costs and, last but not least, the costs of dismantling and disposal the lifetime of a plant.

is the current standard concept for wind turbines with a three-bladed turbine on a high tower or Mast for the double-digit megawatt range technical and economically viable enough? After analyzes by the author are the requirements for the powertrain for services in the double-digit megawatt range completely controllable by innovative solutions, without masses and disproportionately increase costs. The real problem is with the rotors.

continuous Although research and development can improve performance and earnings by increasing the aerodynamic, the mechanical, the electrical efficiency and optimal operation achieve performance improvements in the targeted dimensions however, they require a considerable increase the wind harvest area. Consequently, the rotor diameter must to grow. For this, the blade lengths, the blade depths, the diameters of the leaf roots, the diameter of the hub and thus the Masses and the cost of the rotor grow. The compressive, tensile and bending stresses alone by gravity and centrifugal force increase disproportionately. Added to this are the dynamic loads, alternating loads and load peaks by the increasing differences in wind speeds and wind directions (with differential angles up to more than 100 °) between the lower and the upper zone of the rotor surface as well as local gusts, in addition there are imbalances. For all that the web speed of the blade tips must be more critical below Limits are kept. Therefore, with growing radii the Speed can be lowered. In the professional world is discussed, whether to reduce costs again from three to two rotor blades dismantle and the poorer azimuth turning behavior in purchase should take. It is considered, if not from the relatively complicated Pitch control back to the simpler stall control of the rotor blades should go back. The result from all this yield reduction in turn would have to by increasing the torque be compensated, what the rotor blades because of the magnification makes the leaf depths heavier again. Another problem arises arising from testing, maintenance and servicing of the rotor blades. Knowing the problems already affecting today's rotor blades total, when looking at the overall scene, so must for the future will be faced with daunting tasks that solve are. The solutions are expensive.

To all experiences with major technical problems the assumption reasonable that rotor blade problems, purely technical considered, in the future can be solved, if also with enormous efforts. However, a completely different problem is the economy: From how many megawatts of power is a single investment no longer economically competitive against two plants with half the power? Nobody can answer that question exactly today answer. But there are indications that indicate that Concept "Turbine", ie a system with rotor, will soon reach economic limits, as feared.

The invention is based on the discussed reasons of the turbine concept and relies on the core already ancient, already several thousand years ago in Persia known concept of a wind up and down moving aerodynamic body, a concept that began as a simple "flapping pump" and now ent According to the invention is designed as a lift wing system for power up to 20 megawatts. Of great added benefit here is the robust and reliable hydraulic deformation of the reciprocating stroke movement via a memory into a rotary motion with a constant speed for production at "Premiumstrom" as "Netzbetreibers Liebling".

In the course of the research, a large number of relevant patents and utility models were considered and examined. They go back to the 19th century. Below is a selection of the patent documents found and tested relating to oscillating aerodynamic drives in time order by priority date: US 148,927 03/24/1874 US 1,281,618 01/15/1918 US 3,109,494 04/13/1961 US 170,326A 23/11/1875 US 1,302,889 06/05/1919 US 3,508,840 09/04/1968 US 237,851 02/15/1881 FR 510,435 02/21/1920 US 3,584,811 04/30/1968 US 258,650A 05/30/1882 US 1,486,040 08/24/1921 US 3,783,858 09/01/1971 US 276,939A 05/01/1883 US 1,490,787 03/20/1922 US 4,024,409 01/07/1975 US 640,003 26/12/1899 DE 433 513 05/17/1924 DE 2 524 145 05/30/1975 US 717,110 30/12/1902 US 2,151,172 04/19/1938 US 3,995,972 07/12/1976 US 804,676 14/11/1905 US 2,465,285 23/12/1944 US 4,184,805 09/03/1978 US 995,419 06/13/1911 US 2,622,686 02/27/1948 US 474,839 17.05.1982 US 1,000,351 08/08/1911 US 2,465,285 03/22/1949 US 4,470,770 06/28/1982 US 1,221,090 04/03/1917 US 3,040,976 08/17/1959 US 4,595,336 17.08.1984 WO 2004/110859 23.12.2004 WO 2008/144938 30/05/2008

Under the proposed solutions are wind-driven wings, which are attached to levers or more complicated carrier systems can move up and down. The angles of attack are between the up and the down movement mostly changed mechanically. Under these Suggestions is none for applications in the one or even two-digit megawatt range is provided, or even remotely would be suitable. Neither the wing systems especially the carrier systems are the requirements such high performances. The intended carrier systems are at best for small wind turbines but not for Lifting heights of the order of 80 up to 200 m. The proposals of the prior art are, with all due respect, toys measured by the demands of the task, which is the basis of the invention.

5. The tasks of the invention Basically lying

• 1. Sie soll im hohen Megawattbereich arbeiten können und ein Potenzial bis 20 MW oder mehr haben.
• 2. Sie soll einen hohen Erntegrad sowie einen hohen aerodynamischen, mechanischen und elektrischen Wirkungsgrad haben.
• 3. Sie soll sogar bei Sturm sicher arbeiten können.
• 4. Sie soll besonders netzfreundlich sein. Sie soll „Premiumstrom” liefern, d. h. Strom mit präziser Sinusform, mit konstanter Frequenz und konstanter Spannung.
• 5. Sie soll zuverlässig vor Blitz-, Hagelschlag oder Sandstürmen geschützt werden können.
• 6. Sie soll ein geringes Masse/Leistungs-Verhältnis haben.
• 7. Sie soll einen niedrigen, breit aufgestellten und standsicheren Grundkörper (z. B. Mast) haben und dauerhaft sicher gegründet werden können.
• 8. Sie soll robust, zuverlässig, wartungsarm und langlebig sein.
• 9. Sie soll besonders wartungs- und reparaturfreundlich sein.
• 10. Sie soll dem Servicepersonal die Arbeit leicht machen.
• 11. Sie soll leicht und zu niedrigen Kosten versicherbar sein.
• 12. Die Kosten pro kWh sollen über die gesamte Lebenszeit kleiner sein als bei den fortschrittlichsten Anlagen nach Stand der Technik.

The invention is based on the following objects: It is a technical device for the use of the flow energy of a fluid medium, primarily the wind, can be created, which has the following characteristics:

• 1. It should be able to work in the high megawatt range and have a potential of up to 20 MW or more.
• 2. It should have a high degree of harvesting and high aerodynamic, mechanical and electrical efficiency.
• 3. It should be able to work safely even during storms.
• 4. It should be particularly network friendly. It is intended to deliver "premium current", ie current with precise sinusoidal shape, with constant frequency and constant voltage.
• 5. It should be able to be reliably protected against lightning, hailstorm or sandstorms.
• 6. It should have a low mass / performance ratio.
• 7. It should have a low, broad and stable basic body (eg mast) and can be permanently established safely.
• 8. It should be robust, reliable, low maintenance and durable.
• 9. It should be particularly maintenance and repair friendly.
• 10. It should make the service staff's work easy.
• 11. It should be easy to insure and at low cost.
• 12. The costs per kWh should be smaller over the entire lifetime than with the most advanced state-of-the-art systems.

6. The inventive solution

• 1. einem kurzen, gedrungenen kreis- oder polygonförmigen, durch seinen großen Durchmesser überaus standfesten Grundkörper 1, z. B. mit einer Gitterstruktur;
• 2. einem Hubflügelsystem 2, das aus einem oder aus mehreren waagerecht übereinander gestaffelten, miteinander verbundenen Flügeln besteht, die eine Auf- und Abwärtsbewegung innerhalb eines Hubbereichs von ca. 80–200 Metern vollführen können;
• 3. einem Falt-Hub-Gerüst 3, welches das Hubflügelsystem 2 mit dem Grundkörper 1 verbindet und das vorzugsweise mit einer Parallelogramm-Faltkinematik ”over-the-center” arbeitet;
• 4. sowie aus vorzugsweise hydraulischen Energiewandlern 4, 5 und 6, welche die vom Falt-Hub-Gerüst 3 übertragene Hub-Energie über einen Kurz- oder Langzeitspeicher (z. B. Gasdruckspeicher) in eine Drehbewegung mit konstanter Drehzahl z. B. zur Produktion von „Premiumstrom” umwandeln.

A device according to the invention is described in detail in claim 1 and consists in Essentially four components:

• 1. a short, squat circular or polygonal, extremely stable by its large diameter body 1 , z. B. with a grid structure;
• 2. a lift wing system 2 consisting of one or more horizontally stacked interconnected wings capable of moving up and down within a range of approximately 80-200 meters;
• 3. a folding hub scaffolding 3 which is the lift wing system 2 with the main body 1 connects and which preferably works with a parallelogram folding kinematics "over-the-center";
• 4. as well as preferably hydraulic energy converters 4 . 5 and 6 which are the ones from the folding hub scaffolding 3 transferred stroke energy via a short or long-term memory (eg gas pressure accumulator) in a rotary motion at a constant speed z. B. for the production of "premium stream" convert.

• – Ein Hubflügelsystem, das sich parallel zu sich selbst im Wind auf und ab bewegt, überstreicht aus rein geometrischen Gründen in einem „Arbeitstakt” eine über 27% größere Erntefläche als der Rotor einer Windturbine gleicher Größe. Zur Begründung soll ein Flügelsystem aus drei waagerechten, übereinander gestaffelten Flügeln mit einer dreiflügeligen Turbine verglichen werden. Jeder Flügel soll die Länge 1 und eine Hubhöhe von 2 haben. Der Vergleichsrotor soll einen Radius von r = 1 haben. Der Durchmesser von d = 2 entspricht dann genau der Hubhöhe. Beide Konzepte sind also direkt vergleichbar. Die von einem Rotorblatt bei einem „Arbeitstakt” (= einer vollen Umdrehung) überstrichene kreisförmige Erntefläche (π·r²) beträgt π·1² = π. Drei Rotorblätter überstreichen dann in einem „Arbeitstakt” eine Erntefläche von 3π. Das Flügelsystem mit drei Flügeln der Länge 1 überstreicht bei einem „Arbeitstakt” (= einmal auf und einmal ab) zweimal eine Fläche von 2·1, also die Gesamtfläche 3·2·2 = 12. 12 dividiert durch 3π ergibt 1,273239... Dies ist ein Mehr von über 27%, was zu beweisen war. Tatsächlich ist der Vergleich noch etwas ungünstiger für den Rotor, denn bei einem Rotorradius von 1 hat ein Rotorblatt eine Länge kleiner als 1, da der Nabenbereich, der ja keinen Auftrieb beisteuert, abgezogen werden muss. Dies verschiebt das Größenverhältnis der Ernteflächen noch einmal zusätzlich zu Gunsten des Flügelsystems. Das Hubflügelsystem 2 ist ferner nur halb so breit wie der Rotor eines vergleichbaren Turbinensystems, da es beim Auf und Ab dieselbe Fläche (von 2·1) zweimal überstreicht.
• – Ein Hubflügelsystem, das sich parallel zu sich selbst und mit stets optimal eingestelltem Anstellwinkel sowie optimierter mehrteiliger Kontur im Wind auf und ab bewegt, hat einen höhe ren Auftrieb und damit Energieertrag als ein rotierendes Blatt einer Windturbine. Das Flügelsystem wird über seine gesamte Länge und immer ungestört mit derselben hohen Windgeschwindigkeit angeströmt. Der Flügel ist in seiner Mitte an einem von unten schräg nach vorne hoch ragenden Tragsporn angebracht, der den Auftrieb im Mittelbereich nahezu ungestört lässt. Die Rotorblätter der Windturbine hingegen haben keinen Vortrieb im Nabenbereich und durchlaufen dreimal pro Umdrehung die aerodynamisch gestörte Zone vor dem Turm.
• – Das Hubflügelsystem ist erheblich robuster als ein Rotor. Jeder der drei Flügel aus dem obigen Beispiel mit der Länge 1 hat einen stabilen Holm als „Rückgrat”. Dieser erstreckt sich in jedem Flügel durchgehend von der einen bis zur anderen Flügelspitze. Das Flügelsystem wird in seiner Mitte von einem Tragsporn gehalten. Die Biegelänge eines Flügels ist also ½ und damit nur halb so groß wie die Biegelänge eines nur an einem Ende mit der Nabe befestigten Rotorblatts mit der Länge 1. Weiterhin demonstriert jedes Flugzeug, dass ein Flügel Windgeschwindigkeiten weit oberhalb der Orkanstärke im Dauerbetrieb unbeschadet aushalten kann. Ein Rotor hingegen muss schon ab etwa 25 m/sec (= 90 km/h) in Neutralstellung gebracht und abgeschaltet werden.
• – Ein Hubflügelsystem kann mit wenig Zusatzaufwand in weiten Grenzen durch zusätzliche Flügel erweitert werden. Entsprechend erhöhen sich Leistung und Energieertrag des Systems. Der Rotor einer Turbine hingegen kann grundsätzlich nicht auf vier, fünf oder mehr Rotorblätter erweitert werden.
• – Ein Flügel des Hubflügelsystems kann in leicht transportierbare und gut handhabbare Segmente unterteilt werden. Die Verbindungsflansche dieser Segmente können als aerodynamische Zäune genutzt werden. Jedes einzelne Segment 25 ist durch je ein eigenes hochzugfestes und schlagzähes Zugmittel 26 (z. B. ein Kevlarseil), das im Inneren des Flügels verläuft, mit dem Tragsporn 31 fest verbunden. Im unwahrscheinlichen Fall eines Flügelbruchs können die Teile nicht wegfliegen. Dieses Sicherheitsmittel ist vergleichbar den Sicherheitsseilen, mit denen die Räder von Formel-1 Rennwagen gesichert werden.
• – Ein ”over-the-center” arbeitendes Falt-Hub-Gerüst 3 mit Rhombus- oder vorzugsweise Parallelogramm-Kinematik ist ein sehr effektives, robustes, technisch reifes und im Kranbau seit vielen Jahrzehnten erfolgreiches Mittel, um eine Last schnell über große Höhenunterschiede zu bewegen. Für Jedermann augenfällig und erlebbar ist das in der rhombischen Version bei der wohlbekannten „Nürnberger Schere”.
• – Für die Energiewandlung von der hin und her gehenden Bewegung über die Kurz- oder Langzeitspeicherung zur Drehbewegung, die dann durch Generatoren (z. B. Permanentmagnet-Synchrongeneratoren) mit konstanter Drehzahl, ohne Umrichter und deren Verluste, in netzfreundlichen elektrischen Premiumstrom umgewandelt wird, ist die Industrie-Hydraulik das ideale Mittel. Sie hat seit vielen Jahrzehnten weltweit in millionenfachen Anwendungen auch unter widrigsten Einsatzbedingungen z. B. in der Bagger-, Hubzeug- und Krantechnik sowie in der Flugzeugtechnik (z. B. Einfahren, Ausfahren und Fixieren der großen Fahrgestel le) ihre enorme Robustheit und Zuverlässigkeit unter Beweis gestellt.
• – Ein herausragender Vorteil des Hubflügelkonzepts gegenüber dem Turbinenkonzept besteht darin, dass alle schweren Aggregate, die Hydraulik wie auch die Generatoren, nicht in 80 bis 160 m Höhe sondern direkt unten am Boden oder nahe der Meeresoberfläche in einem geschlossenen Gehäuse untergebracht sind.
• – Das Falt-Hub-Konzept eröffnet überaus vorteilhafte Möglichkeiten, wirtschaftlich erhebliche Schadensquellen zu eliminieren und die wirtschaftlich kritischen Servicekosten drastisch zu senken, was besonders offshore große Auswirkungen hat. Bei Gewitter, Eisregen, Hagelschlag, Sandsturm etc. oder aber für Wartungs- oder Reparaturarbeiten wird das Falt-Hub-Gerüst 3 mittels der sowieso schon vorhandenen Hydraulik um eine waagerechte Achse herab geschwenkt. Dort befindet sich ein Schutzgehäuse 8, welches über das Hubflügelsystem 2 gefahren oder geschwenkt oder geklappt oder über diesem entfaltet wird. Das Schutzgehäuse 8 befindet sich auf einer Fläche am Erdboden oder auf einer Plattform nahe der Meeresoberfläche oder auf Deck eines Schiffes oder Pontons zum Schutz des Hubflügelsystems 2 und zur Gewährleistung optimaler Arbeitsbedingungen für das Servicepersonal.

The invention is based on the finding that a lift wing concept designed in this way is fundamentally superior to the turbine concept for the following reasons:

• - A lift wing system that moves up and down in the wind parallel to itself, sweeps over purely geometrical reasons in a "power stroke" over 27% larger harvesting area than the rotor of a wind turbine of the same size. To justify a wing system of three horizontal, staggered wings is compared with a three-bladed turbine. Each wing should have the length 1 and a lifting height of 2. The comparison rotor should have a radius of r = 1. The diameter of d = 2 then corresponds exactly to the lifting height. Both concepts are therefore directly comparable. The circular crop area (π · r ² ) swept by a rotor blade at a "working cycle" (= one full revolution) is π · 1 ² = π. Three rotor blades then cover a harvesting area of 3π in a "work cycle". The wing system with three wings of length 1 passes twice over an area of 2x1 in a "work cycle" (= once up and down), so the total area is 3 · 2 · 2 = 12. 12 divided by 3π yields 1.273239. .. This is a more of over 27%, which was to prove. In fact, the comparison is a little less favorable for the rotor, because with a rotor radius of 1, a rotor blade has a length less than 1, since the hub area, which indeed contributes no buoyancy, must be deducted. This shifts the size ratio of the harvested areas once again in favor of the wing system. The lift wing system 2 Further, it is only half as wide as the rotor of a comparable turbine system, since it sweeps twice over the same area (2 x 1) during up and down.
• - A lift wing system that moves up and down parallel to itself and with always optimally adjusted angle and optimized multi-part contour in the wind, has a higher ren buoyancy and thus energy output as a rotating blade of a wind turbine. The wing system is flown over its entire length and always undisturbed with the same high wind speed. The wing is mounted in its center on a cantilever from the bottom upwards projecting spur that leaves the buoyancy in the central area almost undisturbed. The rotor blades of the wind turbine, however, have no propulsion in the hub area and go through three times per revolution, the aerodynamically disturbed zone in front of the tower.
• - The lift wing system is considerably more robust than a rotor. Each of the three wings from the above example with the length 1 has a stable spar as a "backbone". This extends in each wing continuously from one to the other wing tip. The wing system is held in its center by a support spur. The bending length of a wing is thus ½, and thus only half as large as the bending length of only one end attached to the hub rotor blade of length 1. Furthermore, each aircraft demonstrates that a wing can withstand wind speeds far above the hurricane force in continuous operation unscathed. On the other hand, a rotor must be brought into neutral position from about 25 m / sec (= 90 km / h) and switched off.
• - A Hubflügelsystem can be extended with little additional effort within wide limits by additional wings. Accordingly, the performance and energy yield of the system increase. The rotor of a turbine, however, can not be extended to four, five or more rotor blades.
• - One wing of the Hubflügelsystems can be divided into easily transportable and easy to handle segments. The connecting flanges of these segments can be used as aerodynamic fences. Every single segment 25 is by its own high-tensile and impact-resistant traction 26 (eg a kevlar rope), which runs inside the wing, with the supporting spur 31 firmly connected. In the unlikely event of a wing fracture, the parts can not fly away. This safety device is similar to the safety ropes that secure the wheels of Formula 1 racing cars.
• - An over-the-center folding-lift scaffolding 3 with rhombus or preferably parallelogram kinematics is a very effective, robust, technically mature and successful in crane construction for many decades means to move a load quickly over large height differences. This rhombic version of the well-known "Nuremberg Scissors" is obvious and tangible for everyone.
• - For the energy conversion of the reciprocating movement on the short or long term storage for rotary motion, which then by generators (eg permanent magnet synchronous generators) with constant speed, without converters and their losses, is converted into mains-friendly premium electric power, industrial hydraulics is the ideal medium. For many decades, it has been used in millions of applications worldwide, even under the most adverse operating conditions. B. in the excavator, Hubzeug- and crane technology and in aircraft technology (eg., Retracting, extending and fixing the large Fahrgestel le) their enormous robustness and reliability demonstrated.
• - An outstanding advantage of the Hubflügel concept compared to the turbine concept is that all heavy aggregates, the hydraulics as well as the generators, are not located in 80 to 160 m altitude but directly below the ground or near the sea surface in a closed housing.
• - The Fold-Hub concept offers highly advantageous opportunities to eliminate economically significant sources of damage and to drastically reduce the cost of service costs, which has a particularly large impact offshore. In the event of thunderstorms, freezing rain, hailstorms, sandstorms, etc., or for maintenance or repair work, the folding-hub scaffolding will be used 3 pivoted down by a horizontal axis by means of the already existing hydraulics. There is a protective housing 8th , which about the Hubflügelsystem 2 driven or pivoted or folded or unfolded over this. The protective housing 8th Located on a surface on the ground or on a platform near the sea surface or on the deck of a ship or pontoon to protect the lift wing system 2 and to ensure optimal working conditions for service personnel.

8. embodiments of the invention

• Anspruch 2. ist eine Variante der Erfindung, bei der das Hubflügelsystem 2 an seinen seitlichen Enden mit senkrecht stehenden Winglets 21 ausgerüstet ist. Die Winglets sind zum Wind hin leicht pfeilförmig angeordnet. Sie sichern so die Azimutausrichtung des Hubflügelsystems 2 nach Lee auch bei geringer Exzentrizität des Windangriffsschwerpunktes. Wenn das Hubflügelsystemen 2 mehrere Flügel hat, verbinden die Winglets die äußeren Enden der Flügel und erhöhen so die Stabilität des ganzen Systems.
• Anspruch 3. Ein ernst zu nehmendes Problem bei großen Windenergieanlagen ist ihre wachsende Höhe. Die Rotorspitze der zurzeit höchsten Anlage ragt über 200 m hoch. Zwar erhöht sich dadurch der Ertrag, aber die Kollisionsgefahr mit Flugzeugen wird erhöht, Vogelschwärme werden irritiert, Einschläge von Blitzen werden wahrscheinlicher und deren Folgen werden verschlimmert. Eine erfindungsgemäßes Hubflügelsystem 2 hat nach diesen Kriterien große Vorteile. Das Hubflügelsystem 2 kann mit einem kleinen Radarsystem ausgerüstet werden, welches bei jedem Hub oder in bestimmten Hubintervallen den umgebenden Luftraum überwacht und bei Annäherung eines Flugobjekts oder eines Vogelschwarms automatisch die Höhe der Hubbewegung so anpasst, dass keine Kollision geschehen kann. Das System ist ferner auch als Wetterradar ausgelegt, das sich nähernde Gewitter oder Hagelfronten feststellen kann. In einem solchen Fall kann die gesamte Windenergieanlage, auch vollautomatisch, um die Schwenkvorrichtung 32 herunter geschwenkt und unter dem Schutzgehäuse 8 in Sicherheit gebracht werden. Das Hubflügelsystem 2 kann auch in ein Flugüberwachungs-, Seeüberwachungs- oder in ein Wetterdatennetzwerk einbezogen werden.
• Anspruch 11. ist eine Anwendung der Erfindung zur Nutzung von Schwachwind. Wenn die Windgeschwindigkeit so gering ist, dass das Hubflügelsystem 2 nur langsam oder gar nicht angehoben werden kann, so wird die Arbeitsweise des ersten Energiewandlers 4 in der Hubphase umgekehrt. Er arbeitet jetzt als Hydraulikmotor und unterstützt oder bewirkt aktiv den Aufwärtshub des Hubflügelsystems 2. Der Abwärtshub wird dann durch Wind und Gewicht gemeinsam getrieben. Ab einer gewissen Mindestwindgeschwindigkeit ist dann die Gesamtenergiebilanz positiv genug, um wirtschaftlich sinnvoll genutzt werden zu können.
• Anspruch 12. ist eine Ausgestaltung der Erfindung durch ein Verfahren zur Optimierung des Energieertrags in einem Windpark mit vielen solchen Anlagen. Weil das Hubflügelsystem 2 nur halb so breit ist wie eine vergleichbare Turbine, können Hubflügelsysteme 2 viel dichter nebeneinander aufgestellt werden als Turbinen. Ein weiterer fundamentaler Vorteil eines Hubflüge/systems 2 liegt in Folgendem: In einem Windpark mit Windturbinen nach Stand der Technik stören die in Windrichtung vorderen Anlagen die hinter ihnen stehenden Anlagen durch ihre Wirbelschleppe aus energiearmem und turbulentem Wind. Deshalb müssen die Turbinen in Hauptwindrichtung große Abstände voneinander haben. Trotzdem ist der Gesamtertrag des Windparks kleiner als die Summe der Erträge, welche die Anlagen einzeln stehend erbringen würden. Die Hubbewegung jeder erfindungsgemäßen Anlage in einem Windpark hingegen kann so gesteuert werden, dass sie gegenüber der Hubbewegung der Anlage, die in Windrichtung vor ihr liegt, phasenverschoben arbeitet. Anlagen, die in Windrichtung hintereinander liegen, arbeiten durch eine so synchronisierte Steuerung wie eine durchlaufende Welle von Auf- und Abbewegungen. Die Wirbelzone einer Anlage trifft auf diese Weise lediglich in der oberen und unteren Randzone kurz die hinter ihr liegenden Anlagen. Die bringt jedoch keinen Ertragsverlust, weil in diesen Zonen sowieso die Anstellwinkel der Flügel umgekehrt werden.
• Anspruch 16. ist eine Anwendung der Erfindung, bei der jeder Flügel des Hubflügelsystems 2 durch einen waagerecht rotierenden zylinderförmigen Flettner-Rotor 22 ersetzt wird. Dieser rotiert im Aufwärtshub so, dass sich die Oberseite mit dem Wind und die Unterseite gegen den Wind bewegen. Im Abwärtshub rotiert er in Gegenrichtung. Ein Flettner-Rotor ist ein rotierender Zylinder. Wenn er vom Wind senkrecht zu seiner Längsachse angeströmt wird, entwickelt sich eine Kraft senkrecht zur Windrichtung und senkrecht zur Längsachse des Rotors in Richtung der Seite, auf der die Luft in Drehrichtung des Rotors strömt. Die Rotation kann vorteilhafter Weise durch den Wind selbst erzeugt werden. Dazu verfügt jeder zylinderförmige Flettner-Rotor 22 vorzugsweise an beiden Enden über zwei Paare von Savonius-Rotoren 23 und/oder Darrieus- Rotoren 24 mit waagerechten Achsen und einer Mehrzahl von vorzugsweise spiraligen Rotorblättern. Ein Paar ist für die Aufwärtsrotation zuständig. Das andere Paar hat Blattwinkel mit gegenteiliger Steigung und ist für die Abwärtsrotation zuständig. Das jeweils inaktive Paar wird durch ein Paar von Abdeckungen in Form von axial verschieblichen Zylindermänteln überdeckt und dadurch inaktiviert. Die Abdeckungen werden zu diesem Zweck durch Mittel nach Stand der Technik hin und her geschoben. Die Rotoren können noch zusätzlich temporär durch einen Elektroantrieb unterstützt werden.

The embodiments and variants of the invention are formulated in 17 claims. Below is a selection of the most important ones:

• Claim 2. is a variant of the invention, in which the Hubflügelsystem 2 at its lateral ends with vertical winglets 21 equipped. The winglets are slightly arrow-shaped towards the wind. They thus ensure the azimuth orientation of the Hubflügelsystems 2 to Lee even with low eccentricity of the wind attack center of gravity. If the lift wing systems 2 has several wings, the winglets connect the outer ends of the wings, thus increasing the stability of the whole system.
• Claim 3. A serious problem with large wind turbines is their growing height. The rotor tip of what is currently the tallest plant rises above 200 m. Although this increases the yield, but the risk of collision with aircraft is increased, bird swarms are irritated, impacts of lightning are likely and the consequences are aggravated. An inventive Hubflügelsystem 2 has great advantages according to these criteria. The lift wing system 2 can be equipped with a small radar system, which monitors the surrounding airspace at each stroke or in certain stroke intervals and automatically adjusts the height of the stroke movement when approaching a flying object or a bird swarm so that no collision can happen. The system is also designed as a weather radar that can detect approaching thunderstorms or hail fronts. In such a case, the entire wind turbine, even fully automatically, to the pivoting device 32 swung down and under the protective housing 8th be brought to safety. The lift wing system 2 can also be included in an air traffic control, maritime surveillance or weather data network.
• Claim 11 is an application of the invention for the use of light wind. When the wind speed is so low that the lift wing system 2 can be raised only slowly or not at all, so does the operation of the first energy converter 4 reversed in the lifting phase. He now works as a hydraulic motor and actively supports or causes the upstroke of the lift wing system 2 , The downstroke is then driven together by wind and weight. From a certain minimum wind speed then the total energy balance is positive enough to be used economically useful.
• Claim 12 is an embodiment of the invention by a method for optimizing the energy yield in a wind farm with many such facilities. Because the lift wing system 2 only half as wide as a comparable turbine, can lift wing systems 2 be placed much closer together than turbines. Another fundamental advantage of a Hubflüge / system 2 The following is true: in a wind park with state-of-the-art wind turbines, the wind turbines disrupt the turbines behind them with their turbulence from low-energy and turbulent winds. Therefore, the turbines in the main wind direction must have large distances from each other. Nevertheless, the total yield of the wind farm is smaller than the sum of the yields that the plants would provide individually. The lifting movement of each system according to the invention in a wind farm, however, can be controlled so that it operates out of phase with respect to the lifting movement of the system, which lies in front of her in the wind direction. Wind turbines one behind the other work through a synchronized control as a continuous wave of up and down movements. The vortex zone of a system meets in this way only briefly in the upper and lower marginal zone lying behind her plants. However, this brings no yield loss, because in these zones anyway the angles of attack of the wings are reversed.
• Claim 16. is an application of the invention, wherein each wing of the Hubflügelsystems 2 by a horizontally rotating cylindrical Flettner rotor 22 is replaced. This rotates in the upstroke so that the top moves with the wind and the bottom against the wind. In the downhill he rotates in the opposite direction. A Flettner rotor is a rotating cylinder. When it is flowed by the wind perpendicular to its longitudinal axis, a force develops perpendicular to the wind direction and perpendicular to the longitudinal axis of the rotor in the direction of the side on which the air flows in the direction of rotation of the rotor. The rotation can be advantageously generated by the wind itself. Each cylinder has a Flettner rotor 22 preferably at both ends via two pairs of Savonius rotors 23 and / or Darrieus rotors 24 with horizontal axes and a plurality of preferably spiral rotor blades. One pair is responsible for the upward rotation. The other pair has pitch angles of opposite pitch and is responsible for downward rotation. The respective inactive pair is covered by a pair of covers in the form of axially displaceable cylinder shrouds and thereby inactivated. The covers are pushed back and forth by means of the prior art for this purpose. The rotors can additionally be supported temporarily by an electric drive.

7. The advantages of the invention

• 1. Die Erfindung hat das Potenzial, technisch zuverlässig und vor allem wirtschaftlich erfolgreich in den zweistelligen Leistungsbereich bis 20 Megawatt vorzustoßen.
• 2. Das Hubflügelsystem hat bei vergleichbaren Abmessungen eine um mehr als 27% größere Erntefläche als eine Windturbine.
• 3. Hubflügel haben einen höheren aerodynamischen Wirkungsgrad und deshalb einen höheren Erntegrad als Rotorblätter gleicher Gesamtlänge.
• 4. Eine erfindungsgemäße Vorrichtung benötigt, gemessen an der Größenordnung, vergleichsweise geringe Entwicklungskosten, denn ihre drei Kernkomponenten sind, jede für sich, Stand der Technik. In jedem dieser Bereiche existiert bereits die volle Kompetenz in der einschlägigen Industrie: – Das Hubflügelsystem unterscheidet sich nur gering von Flugzeugtragflächen und kann von jedem Flugzeugbauer entwickelt und produziert werden. – Das Falt-Hub-Gerüst profitiert von der hohen Kompetenz, sowie von den bereits vorhandenen Komponenten bei der Kranbauindustrie. – Die Energiewandler sind allenfalls geringfügig angepasste Standardkomponenten aus dem Sortiment der Hydraulikindustrie.
• 5. Eine erfindungsgemäße Vorrichtung produziert ohne Umrichterverluste besonders netzfreundlichen elektrischen Strom, der als „Premiumstrom” bezeichnet wird. Es ist Strom mit präziser Sinusform, mit konstanter Frequenz und konstanter Spannung.
• 6. Eine erfindungsgemäße Vorrichtung kann sogar bei Sturm arbeiten. Bei einem Flugzeug hält eine Tragfläche Windgeschwindigkeiten aus, die weit über Sturmstärke liegen.
• 7. Eine erfindungsgemäße Vorrichtung ist zuverlässig, wartungsarm und langlebig.
• 8. Alles was schwer ist, befindet sich unten am Boden oder offshore nahe der Wasseroberfläche in einem geschlossenen Gehäuse und ist deshalb besonders wartungs- und reparaturfreundlich. Dem Servicepersonal wird die Arbeit besonders leicht gemacht. Die Servicekosten sind weit geringer als bei Windturbinen nach Stand der Technik.
• 9. Auch alle Wartungsarbeiten am Hubflügelsystem werden unten am Boden oder offshore auf einer Serviceplattform nahe der Wasseroberfläche oder auf einem Serviceschiff in einem geschlossenen Schutzgehäuse gemacht. Das Hubflügelsystem kann dazu herunter geschwenkt und im Schutzgehäuse geborgen werden. Auf diese Weise kann es auch zuverlässig gegen Blitz- oder Hagelschlag geschützt werden, sogar vollautomatisch.
• 10. Eine erfindungsgemäße Vorrichtung ist einfach und zu niedrigen Kosten versicherbar.
• 11. Die Kosten pro kWh sind über die gesamte Lebenszeit hin geringer als bei den fortschrittlichsten Windturbinen nach Stand der Technik.

The invention has a large number of advantages:

• 1. The invention has the potential to advance technically reliable and above all economically successful in the double-digit power range up to 20 megawatts.
• 2. The lift wing system has more than 27% larger harvesting area than comparable wind turbines with comparable dimensions.
• 3. Lifting wings have a higher aerodynamic efficiency and therefore a higher harvesting degree than rotor blades of the same overall length.
• 4. A device according to the invention requires, compared to the order of magnitude, comparatively low development costs, because their three core components are, each on its own, state of the art. In each of these areas already exists the full competence in the relevant industry: - The Hubflügelsystem differs only slightly from aircraft wings and can be developed and produced by any aircraft manufacturer. - The folding-hub scaffolding benefits from the high level of expertise and components already available in the crane construction industry. - The energy converters are at most slightly adapted standard components from the range of the hydraulic industry.
• 5. A device according to the invention produces, without converter losses, particularly grid-friendly electrical current, which is referred to as "premium current". It is current with precise sinusoidal shape, with constant frequency and constant voltage.
• 6. A device according to the invention can even work in storm. In an airplane, an airfoil can withstand wind speeds far beyond storm strength.
• 7. A device according to the invention is reliable, low maintenance and durable.
• 8. Anything that is heavy is located at the bottom of the ground or offshore near the water surface in a closed housing and is therefore very easy to maintain and repair. The service staff is the work very easy. The service costs are far lower than with prior art wind turbines.
• 9. All maintenance on the lift wing system will also be done down to the ground or offshore on a service platform near the water surface or on a service ship in a closed protective housing. The lift wing system can be swung down and retrieved in the protective housing. In this way, it can also be reliably protected against lightning or hailstorms, even fully automatically.
• 10. A device according to the invention is simple and insurable at low cost.
• 11. Cost per kWh is lower over the lifetime than in the most advanced state-of-the-art wind turbines.

9. Areas of application of the invention

The Invention is primarily the energy from wind but also from tidal and other ocean currents. She is for all performance classes suitable. However, the focus is on Reliable mastery of double-digit benefits Megawatt range and generation of premium electricity, d. H. Electricity with precise sine wave, constant voltage and constant Frequency.

1

body or claim 14 pylon

11

yaw bearings

12

traction means

2

Hubflügelsystem

21

winglets

22

Flettner rotors

23

Savonius rotor

24

Darrieus rotor

25

wing segment

26

traction means for holding a single wing segment on the support spur in case of a wing fracture

3

Folding lifting scaffold

30

multipart Telescopic device instead of folding hub scaffolding (according to claim 6.)

31

Support spur at the top of the folding-hub scaffolding, which is the Hubflügelsystem 2 wearing

32

Swivel device, with the entire Falt-Hub scaffolding swung down can be

33

tribological and friction-optimized special bearings

4

first energy converters

41

Lift system with the first energy converter 4 can be driven down to the base of the body

5

energy storage

6

second energy converters

7

third Energy converter (eg one or more generators for Premium Power)

8th

housing

Explanations to the drawings

1 The schematic diagram shows cross-sections of a one-piece single wing in up and down position

2 The schematic diagram shows cross sections of a multi-part single wing in upward and downward position

3 Schematic representation of a lift folding stand with lift wing in upward movement

4 Schematic representation of a lift folding stand with lift wing in downward movement

5 Schematic representation of a lift folding stand with lift wing in almost lowest position

6 Schematic representation of a lift folding stand with triple lift wing in downward movement

7 Schematic representation of a lift folding stand with lift wing in lowered position

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

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Claims (17)

The invention relates to a Hubflügelsystem for the use of wind energy and other flow energies. It is suitable for all performance classes. However, the focus is on the reliable control of double-digit megawatt power, especially offshore. The invention is characterized by the combination of the following features 1.1. to 1.15 .: 1.1. A device according to the invention consists of a base body 1 , preferably a short lattice mast with a large base circumference; - a lift wing system 2 converting the wind energy into a mechanical up-and-down motion parallel to itself; - a folding-hub scaffolding 3 for high lifting heights; - a first energy converter 4 (eg, a multi-piston hydraulic pump); - An energy storage 5 (eg a pressure accumulator); - a second energy converter 6 , z. For generating mechanical rotational energy (eg, a multi-piston hydraulic motor); - a third energy converter 7 (eg, one or more generators) that convert the rotational energy into premium electrical energy; - a protective housing 8th on the ground or near the sea surface, to protect the lift wing system 2 before storm and as a protected space for maintenance and repair. 1.2. The main body 1 is preferably in the shape of a short circular or polygonal truncated cone, or is the same or similar to a rotational hyperboloid. He has a very large area particularly stable base and is only moderately high. It is much lower than the towers or masts of prior art wind turbines. A typical height of the main body 1 is preferably less than 100 m, more preferably less than 50 m. 1.3. The main body 1 is preferably a lattice mast. He has at its lower end preferably multi-part separate foundation devices. The upper end of the main body 1 carries an azimuth bearing 11 according to the prior art, which is designed for very high tipping loads. The system of the present invention is a leeward low eccentric system. The folding hub scaffolding 3 with the lift wing system 2 rotates passively, or possibly additionally actively assisted by azimuth actuators according to the prior art, to Lee. 1.4. The lift wing system 2 consists of one or preferably several horizontal wings. They are preferably positively swept, staggered one over the other and fixed or defined movably interconnected. 1.5. Every single wing of the lift wing system 2 can be one-piece and symmetrical to a wing chord or for better aerodynamic adaptation in several parts. The parts of a single wing are movably connected together by means comparable to the attachments of the various aerodynamic devices on the wings of aircraft such as multi-part flaps, slats, ailerons, air brakes, etc. The orientation of the parts according to the respective aerodynamic requirements of the upwards or downwards Movement is preferably carried out by hydraulic or electric servomotors. 1.6. The lift wing system 2 has sensors (eg, a pitot tube, etc.) for detection and electronics for evaluating the direction and velocity of the fluid (eg, the air) as well as actuators for aerodynamically optimal positioning of movable elements of the Hubflügelsystems 2 , 1.7. The folding hub scaffolding 3 is the connection between basic body 1 and lift wing system 2 , It serves, the Hubflügelsystem 2 to carry this stable and to control its movement and to absorb the energy of the up and down movement over a large altitude range and the first energy converter 4 transferred to. The folding hub scaffolding 3 is a lattice, pipe or preferably a shell construction of a plurality of substantially equal sections, which fold apart and re-fold with each stroke movement by a parallelogram or rhombus or other kinematics according to the prior art. The folding hub scaffolding 3 thus enables an "overhead" stroke movement of the Hubflügelsystems 2 perpendicular or approximately perpendicular above the body 1 or a non-linear lifting movement, z. B. a long drawn in the vertical direction closed ellipse. Typical lifting heights above the main body 1 lie z. B. between 80 and 200 m. The lifting height and the respective current lifting field within the possible total stroke range are variable and can be adapted to the wind conditions and their height graduation. 1.8. The folding hub scaffolding 3 is at its lower end with the main body 1 over the azimuth camp 11 connected to a vertical geometric axis rotatable fixed. At its upper end it carries a Tragsporn 31 , This is kinematically at its lower end with the Falt-Hub scaffold 3 connected to it, regardless of the folding position of the folding-hub scaffolding 3 , always forms the same angle to the vertical. The upper end of the Tragsporns 31 is with the horizontal center of the lift wing system 2 in the manner of torsionally vibrating firmly connected, that this about a horizontal axis within a defined Anstell angle range can be rotated and fixed again. The supporting spur 31 is so long that the lift wing system 2 aerodynamically not from the folding-hub scaffolding 3 being affected. 1.9. The folding hub scaffolding 3 has a swivel device at its base 32 , This allows a swiveling of the entire folding-hub scaffolding 3 together with the lift wing system 2 about a horizontal axis. The swivel range is designed so that the lift wing system 2 on a surface on the ground or offshore near the sea surface on a platform or in leeward movable on the deck of a ship or pontoon can be stored. There then can the Hubflügelsystem 2 through the protective housing 8th to be protected. 1.10. The folding hub scaffolding 3 has tribological and friction-optimized special bearings 33 according to another invention of the author. 11.1. The first energy converter 4 is at the top of the main body 1 under the base of the folding-hub scaffolding 3 appropriate. It converts the mechanical lifting movement of the lift wing system 2 passing through the folding hub scaffolding 3 is transferred in the way that they are in energy storage 5 , z. B. in the form of gas pressure or in the form of the elastic voltage of a solid state system can be stored. The first energy converter 4 is preferably a piston hydraulic system. He is in a lift system 41 built-in, allowing it to be released to the base of the body after maintenance of its mechanical and hydraulic connections for maintenance purposes 1 to shut down in a closed housing. 1.12. The energy storage 5 based on the volume change of a gas or the deformation of an elastic means. It is preferably a depending on the application for short or long storage times designed pressure accumulator. 1.13. The second energy converter 6 converts the energy storage 5 cached energy into the respective desired useful energy. The second energy converter 6 can z. B. be a hydraulic motor that generates mechanical rotational energy. This in turn drives the third energy converter 7 on, for. B. one or more generators (eg., Permanent magnet synchronous generators) that produce constant-speed electrical Premiumstrom (= precise sinusoidal shape, constant voltage and constant frequency). 1.14. The protective housing 8th Located on a surface on the ground or on a platform near the sea surface or on the deck of a ship or pontoon. It serves to protect the maintenance personnel and the lift wing system 2 if this z. B. during thunderstorms, freezing rain, sandstorm, etc., or for maintenance or repair work, was pivoted down. It is about that by means of the pivoting device 32 lowered lift wing system 2 drove or swung or folded or unfolded over this. 1.15. The second 6 and third energy converters 7 as well as the energy storage 5 are down to the base of the body 1 mounted in a closed housing. under claims Variant of the invention according to claim 1, characterized in that the Hubflügelsystem 2 at its lateral ends via winglets 21 has substantially vertical and up and down symmetrical to the horizontal center plane of the Hubflügelelsystems 2 lie. The winglets can continue to carry control flaps similar to the rudder of an aircraft. The essentially vertical winglets 21 at the ends of the Hubflügelsystems 2 have, seen from above, a slightly arrow-shaped arrangement towards the wind, in order to maintain the azimuth orientation of the lift wing system even with low eccentricity of the wind attack center of gravity 2 to secure Lee. For lift wing systems 2 with several wings, the winglets to increase the stability connect the outer ends of the wings. They are shaped in the state of the art in such a way that they reduce the edge vortexes and their induced resistance. Variant of the invention according to claim 1 and 2, characterized in that the Hubflügelsystem 2 equipped with a radar system which monitors the surrounding airspace at each stroke or in other Hubintervallen and automatically adjusts the height of the lifting movement when approaching a flying object or a bird swarm that no collision can happen. The system is also designed as a weather radar that can detect approaching thunderstorms or hail fronts. In such a case, the entire wind turbine, if necessary, automatically to the pivoting device 32 swung down and under the protective housing 8th be brought to safety. The lift wing system 2 can also be included in an air traffic control, maritime surveillance or weather data network. Design according to the claims, characterized in that the Hubflügelsystem 2 equipped with a beacon system, which gives the wind energy system an additional function and an added benefit. Variant of the invention according to the pre-claims, characterized in that the Hubflügelsystem 2 equipped with a video or camera system. Variant of the invention according to the pre-claims, characterized in that the folding-lifting scaffold 3 by a multi-part telescopic device 30 is replaced by the prior art. A variant of the invention according to the pre-claims, which is characterized by the following: The first energy converter 4 is a linear generator for generating according to the prior art. The energy storage 5 is a system for storing electrical energy according to the prior art. The second 6 and third energy converters 7 are system for converting the generated electricity into grid-capable electricity. Embodiment of the invention according to the pre-claims, characterized in that the wings of the Hubflügelsystems 2 equipped with aerodynamic fences and / or vortex generators and / or Grenzschichtenanblasung and / or Grenzschichtabsaugung. Embodiment of the invention according to the pre-claims, characterized in that the change of the angle of attack of the Hubflügelsystems 2 by a purely mechanical kinematics according to the prior art. Embodiment of the invention according to the pre-claims, characterized in that the surfaces of the Hubflügelsystems 2 equipped with solar cells (eg thin-film cells) for power generation. Embodiment of the invention according to the pre-claims, with a method for using low wind, characterized by the following: When the wind is so weak that the Hubflügelsystem 2 can be raised only slowly or not at all, so does the operation of the first energy converter 4 reversed in the lifting phase. He now works as a hydraulic motor and actively supports or causes the upstroke of the lift wing system 2 , The downstroke is then driven together by wind and weight. From a certain minimum wind speed then the total energy balance is positive enough to be used economically useful. Embodiment of the invention according to the pre-claims, with a process for optimizing the energy yield of a wind farm with many systems, characterized in that the lifting movement of a Plant in a wind farm is controlled so that it is out of phase works against the lifting movement of a plant, which in Wind direction lies in front of her. Variant of the invention according to the pre-claims, characterized in that an inventive System is applied to water currents rather than to wind. Such water currents can tidal and others Be ocean currents or river currents. Variant of the invention according to the pre-claims, characterized in that the basic body 1 through a slender, preferably swing-around pylon 1 is replaced all round in several (eg in eight) directions by traction means 12 (eg wire ropes) is taut. The traction means 12 are in a big radius around the pylon 1 anchored by anchors in the ground or in the seabed. Variant of the invention according to the pre-claims, characterized in that the first energy converter 4 not at the upper end of the body 1 but attached to its base. The mechanical energy from the lifting movements of the folding-hub scaffolding 3 is by pushing or pulling means on the first energy converter 4 transfer. Variant of the invention according to the pre-claims, characterized in that a wing of the Hubflügelsystems 2 made of easily transportable and easy to handle segments 25 consists. The connecting flanges of these segments 25 are used as aerodynamic fences. Every single segment 25 is by its own high-tensile and impact-resistant traction 26 (eg a kevlar rope), which runs inside the wing, with the supporting spur 31 firmly connected. Variant of the invention according to the pre-claims, characterized in that each wing of the Hubflügelsystems 2 through a horizontally rotating Flettner rotor 22 which rotates in the upstroke so that the top runs backwards and the bottom forward and in the downstroke in the opposite direction. In each of the cylindrical Flettner rotors 22 are preferably two pairs of Savonius rotors seated at both ends 23 and / or Darrieus rotors 24 integrated with horizontal axes and a plurality of rotor blades. One pair is responsible for the upward rotation. The other pair has pitch angles of opposite pitch and is responsible for downward rotation. The respective inactive pair is covered by a pair of covers in the form of axially displaceable cylinder shrouds and thereby inactivated. The covers are ge for this purpose by means of the prior art back and forth postponed. The rotors can additionally be supported temporarily by an electric motor.