DE102004035902B3 - Ring segment repeller used in wind power technology, aircraft manufacture and in ship building comprises thin-walled circular or elliptical ring segments formed as angle-adjusted repeller elements rotating about a rotational axis - Google Patents

Ring segment repeller used in wind power technology, aircraft manufacture and in ship building comprises thin-walled circular or elliptical ring segments formed as angle-adjusted repeller elements rotating about a rotational axis Download PDF

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DE102004035902B3
DE102004035902B3 DE102004035902A DE102004035902A DE102004035902B3 DE 102004035902 B3 DE102004035902 B3 DE 102004035902B3 DE 102004035902 A DE102004035902 A DE 102004035902A DE 102004035902 A DE102004035902 A DE 102004035902A DE 102004035902 B3 DE102004035902 B3 DE 102004035902B3
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repeller
gyration
ring
segment
horizontal
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Hans-Juergen Moros
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Moros Hans-Juergen Dipl-Physing
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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
    • F03D5/00—Other wind motors
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

Ring segment repeller comprises thin-walled circular or elliptical ring segments formed as angle-adjusted repeller elements rotating about a rotational axis. Preferred Features: The repeller elements have inner structures with random ring segments and outer structures with random ring segments. The rotational axes of the ring segments are aligned radially to the gyration center.

Description

Die Nutzung unterschiedlicher Repeller-Formen bei differierender, strömungstechnischer Erfordernisse beispielsweise in Luft bis hin zu flüssigen Medien hat heute eine Vielzahl technologischer Antriebs-Aggregate insbesondere im Hochleistungsbereich hervorgebracht (Windenergie, Flugzeugbau, Schiffsantriebsbau, etc.). Die klassischen Rotorblätter im Windenergiebereich oder die Auftriebsflügel im Flugzeugbau mit ihren Druck- und Saugseiten bis hin zu den Blattspitzen haben den Nachteil der Ausbildung eines strömungsinduzierten Widerstandes durch Druckausgleich an den Flügelblattspitzen. Die Reduzierung bzw. Vermeidung des induzierten Widerstandes ist über die Nutzung von Winglets bzw. Multiwinglets oder auch durch die Nutzung von Split-Wing Loops an den Blattspitzen erfolgreich realisiert worden.The Use of different repeller shapes with different, fluidic Requirements for example in air up to liquid media today has a large number of technological drive units in particular produced in the high-performance sector (wind energy, aircraft construction, marine propulsion, Etc.). The classic rotor blades in the wind energy sector or the buoyancy wings in aircraft construction with their Pressure and suction sides up to the blade tips have the disadvantage the formation of a flow-induced Resistance by pressure equalization at the vane tips. The reduction or avoidance of the induced resistance is over the Use of winglets or multi-winglets or through use from split-wing loops been successfully realized at the blade tips.

Hier knüpft die vorliegende Erfindung im ersten Teilschritt an, die dünnwandige, kreis- oder ellipsenförmige Ring-Segmente als winkelverstellbare Repeller-Elemente (1(A)) in einer Rotations-Ebene um eine Drehachse nutzt (1(B)) und sich daher an den Blattspitzen sowie diametralen Blattwurzeln durch formsprungfreie Übergänge zwischen den Druck- und Saugseiten der Ring-Segmente keine strömungs-induzierten Widerstände ausbilden.Here, the present invention in the first sub-step, the thin-walled, circular or elliptical ring segments as angularly adjustable repeller elements ( 1 (A) ) in a plane of rotation about an axis of rotation ( 1 (B) ) and therefore form no flow-induced resistances at the blade tips and diametral blade roots by form jump-free transitions between the pressure and suction sides of the ring segments.

Modifikationen der Repeller-Elemente sind auch nach optischen, ästhetischen Gesichtspunkten mit einer Innen- und / oder Außenstruktur möglich (Beispiele 2(A,B,C)), wobei ihre Verwendungen mehr im Kunst-, Architektur-, Freizeit-, Erholungs-, Marketing- wie in Kleinleistungsbereichen zu finden sind.Modifications of the repeller elements are also possible from an optical and aesthetic point of view with an inner and / or outer structure (examples 2 (A, B, C)), and their uses are more in the arts, architecture, leisure, recreational, marketing, and small-service industries.

Aufgrund der physikalischen Symmetrie-Identität zwischen Vorder- und Rückseite dieses Ring-Segmente-Repeller-Systems erfüllt es auch die Bedingungen einer strömungsdynamischen Reziprozität, die im zweiten Teil der Erfindung durch ein Gyrations-Zentrum zur Anwendung kommt. Hierbei werden beliebig zahlige Ring-Segmente-Repeller um ein horizontales wie auch bis hin zu einem vertikalen Gyrationszentrum mechanisch so zu einer Gyrations-Repeller-Einheit kreislagig angeordnet und kombiniert, dass die Ring-Segmente-Repeller-Rotations-Achsen tangential (3(A)) sowie auch bis hin radial (3(B)) zum Gyrations-Zentrum ausgerichtet sind. Ein Beispiel für die Nutzung eines reziproken Repeller-Systems findet sich in der Druckschrift US 1 918 747 .Due to the physical symmetry identity between the front and back of this ring-segment repeller system, it also fulfills the conditions of fluid dynamic reciprocity used by a gyration center in the second part of the invention. In this case, arbitrarily numerous ring-segment repellers are mechanically arranged in a circle around a horizontal as well as up to a vertical center of gyration to form a gyration-repeller unit, and combined so that the ring-segment-repeller rotation axes are tangential (FIG. 3 (A) ) as well as up to radial ( 3 (B) ) are aligned to the gyration center. An example of the use of a reciprocal repeller system can be found in the document US 1,918,747 ,

Bei Verwendung verschiedener Gyrations-Repeller-Einheiten durch beliebig zahlige Ring-Segmente-Repeller in mehrlagigen horizontalen (4(A)) bis hin zu mehrlagigen vertikalen Gyrationslagen (4(B)) der Gyrations-Zentren entstehen mechanisch drehbar gekoppelte, vielfältige Repeller-Raumstrukturen.When using different gyration repeller units by arbitrary number of ring-segment repellers in multilayer horizontal ( 4 (A) ) up to multilayer vertical gyration layers ( 4 (B) ) of the gyration centers arise mechanically rotatably coupled, diverse repeller spatial structures.

Die physikalische Funktionsweise einer Gyrations-Repeller-Einheit ist zu erklären über das Gyrations-Drehmoment durch unterschiedliche Staudruck-Kräfte differierend, rotierender Ring-Segmente-Repeller zusammen mit ihren Gyrations-Führungsstangen-Längen und -Lagen zum Gyrations-Zentrum wie auch über inhomogene Strömungsanteile. Rotationsdynamisch charakteristisch sind dabei die Rotations-Beschleunigungsänderungen der Ring-Segmente-Repeller in Abhängigkeit der Drehposition der Gyrations-Repeller-Einheit zur Strömungsgeschwindigkeit.The physical functioning of a gyration repeller unit to explain about that Gyration torque differing by different dynamic pressure forces, rotating ring segment repeller along with their gyration guide bar lengths and Layers to the gyration center as well as inhomogeneous flow components. Rotational dynamics are characteristic of the rotational acceleration changes of Ring-segment repeller depending the rotational position of the gyration-repeller unit to the flow velocity.

Bezeichnungsliste der Abbildungen:Designation list of pictures:

1(A): Repeller-Element als kreisförmiges Ring-Segment 1 (A) : Repeller element as a circular ring segment

1(B): Ring-Segmente-Repeller mit vier Repeller-Elementen 1 (B) : Ring Segment Repeller with four repeller elements

2(A): Repeller-Element mit Innenstruktur durch drei Ring-Segmente 2 (A) : Repeller element with internal structure through three ring segments

2(B): Repeller-Element mit Außenstruktur durch zehn Ring-Segmente 2 B) : Repeller element with external structure through ten ring segments

2(C): Repeller-Element in Außenstruktur durch vier Ring-Segmente 2. (C) : Repeller element in outer structure by four ring segments

3(A): Gyrations-Repeller-Einheit in Horizontal-Gyrationslage mit sieben, tangential ausgerichteten Ring-Segmente-Repeller-Drehachsen 3 (A) : Gyration-repeller unit in horizontal gyration position with seven tangentially oriented ring-segment-repeller axes of rotation

3(B): Gyrations-Repeller-Einheit in Horizontal-Gyrationslage mit sieben, radial ausgerichteten Ring-Segmente-Repeller-Drehachsen 3 (B) : Gyration-repeller unit in horizontal gyration with seven radially oriented ring-segment-repeller axes of rotation

4(A): Drei horizontallagige Gyrations-Repeller-Einheiten mit sieben, drei und fünf Ring-Segmente-Repellern in Tangential-, Radial- und Tangential-Drehachsenrichtung 4 (A) Three three-ply gyration repeller units with seven, three and five ring-segment repellers in tangential, radial and tangential axes of rotation

4(B): Drei vertikallagige Gyrations-Repeller-Einheiten mit sieben, drei und fünf Ring-Segmente-Repellern in Tangential-, Radial- und Tangential-Drehachsenrichtung 4 (B) Three three-ply gyration repeller units with seven, three and five ring-segment repellers in tangential, radial and tangential axes of rotation

ZZ: Darstellung von drei horizontallagigen Gyrations-Repeller-Einheiten mit fünf, drei und sieben Ring-Segmente-Repellern in Tangential-, Radial- und Tangential-Drehachsenrichtung ZZ : Representation of three horizontal-paged gyration-repeller units with five, three and three seven ring-segment repellers in tangential, radial and tangential axes of rotation

Ausführungsbeispiele:EXAMPLES

  • 1. Ring-Segmente-Repeller mit strömungsphysikalischer Symmetrie-Identität zwischen Vorder- und Rückseite als reziproke Strömungssysteme, dadurch gekennzeichnet, dass dünnwandige, kreis- oder ellipsenförmige Ring-Segmente als winkel-verstellbare Repeller-Elemente (1(A)) beliebig zahlig in einer Rotations-Ebene um ihre Drehachse entsprechend angeordnet sind (1(B)).1. Ring-segment repeller with fluid-physical symmetry identity between front and back as reciprocal flow systems, characterized in that thin-walled, circular or elliptical ring segments as angle-adjustable repeller elements ( 1 (A) ) are arbitrarily arranged in a rotational plane around their axis of rotation ( 1 (B) ).
  • 2. Ring-Segmente-Repeller mit strömungsphysikalischer Symmetrie-Identität zwischen Vorder- und Rückseite als reziproke Strömungssysteme nach Ausführungsbeispiel 1, dadurch gekennzeichnet, dass die Repeller-Elemente auch Innenstrukturen mit beliebig zahligen Ring-Segmenten enthalten (2(A)) und/oder dass die Repeller-Elemente auch Außenstrukturen beliebig zahliger Ring-Segmente aufweisen (2(B,C)).2. Ring-segment repeller with fluid-physical symmetry identity between front and back as reciprocal flow systems according to Embodiment 1, characterized in that the repeller elements also contain internal structures with any number of ring segments ( 2 (A) ) and / or that the repeller elements also have external structures of any number of ring segments ( 2 (B, C)).
  • 3. Ring-Segmente-Repeller als reziproke Strömungssysteme kombiniert in Staudruck-Gyrations-Anordnungen nach Ausführungsbeispiel 1 oder 2, dadurch gekennzeichnet, dass beliebig zahlige Ring-Segmente-Repeller mechanisch mit Gyrations-Führungsstangen um ein horizontales wie auch bis hin zu einem vertikalen Gyrations-Zentrum so zu einer Gyrations-Repeller-Einheit kreislagig angeordnet sind, dass die Ring-Segmente-Repeller-Drehachsen tangential (3(A)) sowie auch bis hin radial (3(B)) zum Gyrations-Zentrum ausgerichtet sind.3. ring-segment repeller as reciprocal flow systems combined in dynamic pressure gyration arrangements according to embodiment 1 or 2, characterized in that any number of ring-segment repeller mechanically with gyration guide rods to a horizontal as well as to a vertical gyration Center are arranged in a circle to a gyration repeller unit so that the ring-segment-repeller axes of rotation are tangential ( 3 (A) ) as well as up to radial ( 3 (B) ) are aligned to the gyration center.
  • 4. Ring-Segmente-Repeller als reziproke Strömungssysteme kombiniert in Staudruck-Gyrations-Anordnungen nach Ausführungsbeispiel 3, dadurch gekennzeichnet, dass verschiedene Gyrations-Repeller-Einheiten durch beliebig zahlige Ring-Segmente-Repeller mehrlagig horizontal (4(A)) wie auch mehrlagig bis hin zu vertikalen Gyrationslagen (4(B)) der Gyrations-Zentren mechanisch drehbar gekoppelt sind.4. ring-segment repeller as a reciprocal flow systems combined in dynamic pressure gyration arrangements according to Embodiment 3, characterized in that various gyration repeller units by any number of ring segment repeaters multilayer horizontal ( 4 (A) ) as well as multilayered up to vertical gyration layers ( 4 (B) ) of the gyration centers are mechanically rotatably coupled.
  • 5. Für alle weiteren, physikalisch reziproken Repeller-Strömungs-Systeme wie nach Ausführungsbeispiel 3 mit den Repeller-Einheiten in Radial- bis Tangential-Ausrichtungen sowie den Gyrations-Einheiten in Horizontal- bis Vertikal-Ausrichtungen und Ausführungsbeispiel 4 mit den mehrlagigen horizontalen bis vertikalen Gyrations-Repeller-Einheiten entstehen auch Staudruck-Gyrations-Drehmoment-Effekte.5. For all other physically reciprocal repeller flow systems as in the embodiment 3 with the repeller units in radial to tangential orientations and the gyration units in horizontal to vertical orientations and embodiment 4 with the multilayer horizontal to vertical gyration repeller units there are also dynamic pressure gyration torque effects.

Claims (6)

Ring-Segmente-Repeller mit physikalischer Symmetrie-Identität zwischen Vorder- und Rückseite als reziproke Strömungssysteme kombiniert in Staudruck-Gyrations-Anordnungen, wobei dünnwandige Ring-Segmente mit kreis- oder ellipsenförmigen Querschnitten als winkelverstellbare Repeller-Elemente beliebig zahlig in einer Rotations-Ebene um eine Drehachse angeordnet sind.Ring segment repeller with physical symmetry identity between Front and back as reciprocal flow systems combined in dynamic pressure gyration arrangements, with thin-walled ring segments with circular or elliptical cross sections as angle-adjustable repeller elements any number arranged in a plane of rotation about an axis of rotation are. Ring-Segmente-Repeller nach Patentanspruch 1, dadurch gekennzeichnet, dass die Repeller-Elemente auch Innenstrukturen mit beliebig zahligen Ring-Segmenten enthalten und/oder die Repeller-Elemente auch Außenstrukturen mit beliebig zahligen Ring-Segmenten aufweisen.Ring-segment repeller according to claim 1, characterized characterized in that the repeller elements also have interior structures with any number of ring segments contain and / or the repeller elements also external structures with arbitrary have numerous ring segments. Anordnung von Ring-Segmente-Repellern nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass beliebig zahlige Ring-Segmente-Repeller mechanisch mit Gyrations-Führungsstangen um ein horizontales oder vertikales Gyrations-Zentrum oder um ein Gyrations-Zentrum mit einer zwischen der horizontalen und der vertikalen Lage gelegenen Orientierung so zu einer Gyrations-Repeller-Einheit kreislagig angeordnet sind, dass die Ring-Segmente-Repeller-Rotations-Achsen tangential oder radial oder mit einer zwischen der tangentialen und radialen Position zum Gyrations-Zentrum ausgerichtet sind.Arrangement of ring-segment repellers according to claim 1 or 2, characterized in that any number of ring-segment repeller mechanically with gyration guide rods around a horizontal or vertical gyration center or a gyration center with a horizontal and vertical position Orientation so arranged to a gyration-repeller unit circular layer These are the ring-segment-repeller-rotation axes tangential or radial or with one between the tangential and radial position to the gyration center are aligned. Anordnung nach Patentanspruch 3, dadurch gekennzeichnet, dass verschiedene, beliebig zahlige Ring-Segmente-Repeller aufweisende Gyrations-Repeller-Einheiten mehrlagig horizontal oder mehrlagig vertikal oder mehrlagig in einer zwischen der horizontalen und der vertikalen Drehlage liegenden Drehorientierung der Gyrations-Zentren mechanisch drehbar gekoppelt sind.Arrangement according to claim 3, characterized that different, arbitrary number of ring-segment repeller having Gyration Repeller units multi-layer horizontal or multi-layer vertical or multi-layered in one between horizontal and vertical rotary position Rotational orientation of the gyration centers coupled mechanically rotatable are. Anordnung von Repeller-Strömungs-Systemen, welche eine physikalische Symmetrie-Identität zwischen Vorder- und Rückseiten aufweisen und somit physikalisch reziprok sind, mit Repeller-Einheiten in Radial- bis Tangential-Ausrichtungen sowie Gyrations-Einheiten in Horizontal- bis Vertikal-Ausrichtungen, dadurch gekennzeichnet, dass beliebig zahlige Ring-Segmente-Repeller mechanisch mit Gyrations-Führungsstangen um ein horizontales oder vertikales Gyrations-Zentrum oder um ein Gyrations-Zentrum mit einer zwischen der horizontalen und der vertikalen Lage gelegenen Orientierung so zu einer Gyrations-Repeller-Einheit kreislagig angeordnet sind, dass die Repeller- Rotations-Achsen tangential oder radial oder mit einer zwischen der tangentialen und radialen Position zum Gyrations-Zentrum ausgerichtet sind.Arrangement of repeller flow systems, which a physical symmetry identity between Front and back sides and thus are physically reciprocal, with repeller units in Radial to tangential alignments and gyration units in horizontal to vertical orientations, thereby characterized in that any number of ring-segment repeller mechanical with gyration guide rods around a horizontal or vertical gyration center or around Gyration center with one between the horizontal and the vertical Positioned orientation so to a gyration repeller unit are arranged in a circle, that the repeller rotation axes tangentially or radially or with one between the tangential and radial position to Gyration center are aligned. Anordnung nach Patentanspruch 5, mit einer mehrlagigen horizontalen bis vertikalen Gyrations-Repeller-Einheiten-Struktur, dadurch gekennzeichnet, dass verschiedene, beliebig zahlige Ring-Segmente-Repeller aufweisende Gyrations-Repeller-Einheiten mehrlagig horizontal oder mehrlagig vertikal oder mehrlagig in einer zwischen der horizontalen und der vertikalen Drehlage liegenden Drehorientierung der Gyrations-Zentren mechanisch drehbar gekoppelt sind.Arrangement according to claim 5, with a multi-layer horizontal to vertical gyration-repeller unit structure, characterized in that various, arbitrary number ring-segment repeller having gyration repeller units multi-layered horizontally or multi-layered vertically or multi-layered in between The horizontal and vertical rotational position lying rotational orientation of the gyration centers are mechanically rotatably coupled.
DE102004035902A 2004-07-19 2004-07-19 Ring segment repeller used in wind power technology, aircraft manufacture and in ship building comprises thin-walled circular or elliptical ring segments formed as angle-adjusted repeller elements rotating about a rotational axis Expired - Fee Related DE102004035902B3 (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US199550A (en) * 1878-01-22 Improvement in screw-propellers
US1851513A (en) * 1929-05-17 1932-03-29 Holmstrom Axel Aircraft and watercraft construction
US1918747A (en) * 1932-12-22 1933-07-18 Hammarstrom John Toy windmill
US3732994A (en) * 1970-04-09 1973-05-15 Nippon Steel Corp Apparatus for changing the charge distribution in a vertical furnace
US4285635A (en) * 1978-08-23 1981-08-25 Oy Mercantile Ab Impeller in a centrifugal blower
EP0364020B1 (en) * 1988-10-03 1992-12-30 Josef Moser Rotor for a wind motor
DE9419221U1 (en) * 1994-12-01 1995-04-20 Simhan Krishna Dr Vertical axis wind turbine
DE19544400A1 (en) * 1995-11-29 1997-06-05 En Umwelt Beratung E V I Wind power rotor blade adjuster in light wind
US5984629A (en) * 1993-09-25 1999-11-16 Ksb Aktiengesellscaft Turbo-machine with reduced abrasive wear
DE10208588A1 (en) * 2002-02-27 2003-09-11 Kbe Windpower Gmbh Wind power generator for generating electricity, has stator windings arranged in cowling and magnet elements arranged in radially outer regions of rotor blades
DE69432523T2 (en) * 1993-12-14 2003-11-06 Northrop Grumman Corp ULTRASONIC WING WITH LAMINARY FLOW

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US199550A (en) * 1878-01-22 Improvement in screw-propellers
US1851513A (en) * 1929-05-17 1932-03-29 Holmstrom Axel Aircraft and watercraft construction
US1918747A (en) * 1932-12-22 1933-07-18 Hammarstrom John Toy windmill
US3732994A (en) * 1970-04-09 1973-05-15 Nippon Steel Corp Apparatus for changing the charge distribution in a vertical furnace
US4285635A (en) * 1978-08-23 1981-08-25 Oy Mercantile Ab Impeller in a centrifugal blower
EP0364020B1 (en) * 1988-10-03 1992-12-30 Josef Moser Rotor for a wind motor
US5984629A (en) * 1993-09-25 1999-11-16 Ksb Aktiengesellscaft Turbo-machine with reduced abrasive wear
DE69432523T2 (en) * 1993-12-14 2003-11-06 Northrop Grumman Corp ULTRASONIC WING WITH LAMINARY FLOW
DE9419221U1 (en) * 1994-12-01 1995-04-20 Simhan Krishna Dr Vertical axis wind turbine
DE19544400A1 (en) * 1995-11-29 1997-06-05 En Umwelt Beratung E V I Wind power rotor blade adjuster in light wind
DE10208588A1 (en) * 2002-02-27 2003-09-11 Kbe Windpower Gmbh Wind power generator for generating electricity, has stator windings arranged in cowling and magnet elements arranged in radially outer regions of rotor blades

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Effective date: 20120201