DE102004022731A1 - Rotor for a wind power installation comprises blades joined in the region close to the rotating axle via a power-transferring axle arranged tangentially to the axis of rotation - Google Patents
Rotor for a wind power installation comprises blades joined in the region close to the rotating axle via a power-transferring axle arranged tangentially to the axis of rotation Download PDFInfo
- Publication number
- DE102004022731A1 DE102004022731A1 DE102004022731A DE102004022731A DE102004022731A1 DE 102004022731 A1 DE102004022731 A1 DE 102004022731A1 DE 102004022731 A DE102004022731 A DE 102004022731A DE 102004022731 A DE102004022731 A DE 102004022731A DE 102004022731 A1 DE102004022731 A1 DE 102004022731A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- axis
- wind
- rotation
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000009434 installation Methods 0.000 title 1
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
-
- 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
- F05B2240/202—Rotors with adjustable area of intercepted fluid
- F05B2240/2022—Rotors with adjustable area of intercepted fluid by means of teetering or coning 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
Description
Rotor für Windkraftmaschinen mit horizontaler Drehachse, wobei die auf der Drehachse in tangentialer Richtung befestigten Flügel in die Richtung der Drehachse gekippt werden können, wodurch der Durchmesser des Rotors geändert wird.rotor for wind power machines with horizontal axis of rotation, where on the axis of rotation in tangential Direction paved wings can be tilted in the direction of the axis of rotation, causing the diameter the rotor changed becomes.
Die Energiegewinnung herkömmlicher Windkraftmaschinen mit festem Rotordurchmesser wird für die Windverhältnisse und Windgeschwindigkeiten des geplanten Standortes optimiert, und sie erreichen meistens erst bei dieser Windgeschwindigkeit ihre Nennleistung. Diese Windgeschwindigkeit beträgt im kontinentalen Bereich für europäische Verhältnisse ca. 12 m/s. Bei kleineren Windgeschwindigkeiten nimmt die Leistung einer Windkraftmaschine mit der dritten Potenz der Windgeschwindigkeit ab. Windgeschwindigkeiten über 12 m/s an diesen Standorten sind relativ selten und, in Abhängigkeit der geografischen Eigenschaften des konkreten Standortes, betragen ca. 2 bis 7% der Stundenzahl des Jahres. Die häufigste Windgeschwindigkeit im kontinentalen Bereich beträgt ca. 5 m/s, bei der die Leistung einer Windkraftmaschine nur ca. 1/14-tel der Nennleistung erreicht.The Energy generation conventional Wind turbines with fixed rotor diameter is used for wind conditions and wind speeds of the planned location optimized, and Most of the time they only reach theirs at this wind speed Rated capacity. This wind speed is in the continental range for European conditions about 12 m / s. At lower wind speeds, performance decreases a wind power machine with the cube of the wind speed from. Wind speeds over 12 m / s at these locations are relatively rare and, depending on the geographical characteristics of the specific location, amount to approx. 2 to 7% of the number of hours of the year. The most common wind speed in the continental area approx. 5 m / s, where the power of a wind turbine is only approx. 1 / 14th of the rated power reached.
Die Stromlieferung herkömmlicher Windkraftmaschinen weist deshalb bei Windgeschwindigkeiten unter 12 m/s große Schwankungen auf, und die Energieausbeute, bezogen auf die Nennenergie, erreicht nur wenige Prozente der Jahresstundenzahl.The Electricity supply conventional Wind power machines is therefore under wind speeds 12 m / s big Fluctuations on, and the energy yield, based on the nominal energy, achieved only a few percent of the number of hours worked.
Zweck der Erfindung ist es, die Nennleistung der Windkraftmaschinen auch bei kleineren Windgeschwindigkeiten dadurch zu gewährleisten, dass der Durchmesser des Rotors vergrößert werden kann. Bei größeren Windgeschwindigkeiten kann die Wirkung der Windkraft auf die Anlage durch Verkleinerung des Rotordurchmessers vermindert werden.purpose The invention is also the rated power of wind turbines thereby ensuring at lower wind speeds that the diameter of the rotor can be increased. At higher wind speeds can reduce the effect of wind power on the plant by reducing it the rotor diameter are reduced.
Alle Flügel des Rotors im Sinne der Erfindung sind im drehachsennahen Bereich durch eine kraftübertragende Flügelachse, die in tangentialer Richtung zur Drehachse angebracht ist, verankert. Nach Aufhebung der Sperrung der Flügelachsen können die Flügel, bei laufendem Betrieb, in Drehachsenrichtung gekippt werden. Nach Beendigung des Kippvorganges werden die Rotorenflügel wieder gesperrt. Die Drehachse des Rotors, die gewöhnlich als Rohrwelle ausgebildet ist, ragt über die Ebene der Flügelachse hinaus. Auf oder in der Rohrwelle befindet sich die Rotorflügel-Kippvorrichtung, die mit den Flügeln insbesondere durch Drahtseile verbunden ist, auf vorteilhafte Weise im äußeren Flügelbereich. An der Rohrwelle ist auch eine Flügel-Stützvorrichtung befestigt, die das Abkippen der Flügel verhindert.All wing of the rotor in the context of the invention are in the area close to the axis of rotation through a force-transmitting Wing axis, which is mounted in the tangential direction to the axis of rotation, anchored. To Lifting the blocking of the wing axles can Wing, during operation, tilted in rotation axis direction. To Completion of the tipping process, the rotor blades are locked again. The axis of rotation of the rotor, usually formed as a tubular shaft is overhangs the plane of the wing axis out. On or in the tube shaft is the rotor blade tilting device, the one with the wings in particular connected by wire ropes, in an advantageous manner in the outer wing area. At the tube shaft is also a wing support device attached, which prevents the tilting of the wings.
Der Durchmesser des Rotors im Sinne der Erfindung kann, durch Kippen der Flügel, auf eine ca. 2-fache Größe verändert werden, wodurch die Nennleistung schon bei ca. 70 % der Windgeschwindigkeit des geplanten Optimalwertes – also schon bei ca. 8 m/s Windstärke, wenn der Richtwert 12 m/s gewesen ist – erreicht werden kann. Auf diese Weise wird die Energielieferung einer solchen Windkraftmaschine während der Betriebsstunden bei Windgeschwindigkeiten unter 8 m/s locker verdreifacht.Of the Diameter of the rotor according to the invention can, by tilting the wing, be changed to about 2 times the size, whereby the rated power already at approx. 70% of the wind speed of the planned optimal value - ie already at about 8 m / s wind force, if the standard value has been 12 m / s - can be achieved. On this way, the energy supply of such a wind turbine during the Operating hours at wind speeds below 8 m / s easily tripled.
Mit anderen Worten: die jährlich gewonnene Energie einer solchen Windkraftmaschine mit einem Rotor veränderbaren Durchmessers im Sinne der Erfindung kann, bei kontinentalen Windgeschwindigkeiten und bezogen auf herkömmliche Windkraftmaschinen mit gleicher Generatorleistung bzw. Stromumwandlungsanlage, auf das 3-fache erhöht werden. Es wird also einerseits die Anzahl der Arbeitsstunden bei Nennleistung erhöht, andererseits wird die Leistung bei Windgeschwindigkeiten unter Nennleistung gut verdreifacht. Daraus folgt, dass die Anzahl der Windkraftanlagen mit kippbaren Rotorflügeln im Sinne dieser Erfindung für die Gewinnung gleicher Energiemenge nur die Hälfte oder ein Drittel der Anzahl herkömmlicher Windkraftanlagen beträgt. Ein weiterer Vorteil ist, dass wesentlich mehr Standorte, dank dieser Erfindung, für den Bau und die ökonomische Nutzung von Windkraftanlagen geeignet sind.With other words, the yearly gained energy of such a wind turbine with a rotor changeable Diameter according to the invention can, at continental wind speeds and based on conventional Wind power machines with the same generator power or power conversion plant, increased to 3 times become. Thus, on the one hand, the number of working hours is added Rated power increased, On the other hand, the performance at wind speeds below rated power is good tripled. It follows that the number of wind turbines with tiltable rotor blades in the sense of this invention for the recovery of the same amount of energy only half or a third of the number of conventional Wind turbines amounts. Another advantage is that much more sites, thanks to this Invention, for the construction and the economic use of wind turbines are suitable.
Eine vorteilhafte Ausführung des Rotors mit kippbaren Flügeln im Sinne dieser Erfindung ist eine Variante, wobei die Kippflügel noch zusätzlich mit verschiebbaren Flügelelementen ausgestattet sind. Windkraftmaschinen mit Rotoren dieser Art können schon bei ca. 5 m/s Windgeschwindigkeit – die nach Messungen die häufigste kontinentale Windgeschwindigkeit darstellt – ihre Nennleistung erreichen, wodurch sie ungefähr das 10-fache Energie herkömmlicher Windkraftmaschinen mit konstantem Rotordurchmesser liefern. Dies wird insbesondere dadurch erreicht, dass die Anzahl der Betriebsstunden im Jahr erhöht wird, bei denen die Windkraftanlage ihre Nennleistung liefert.A advantageous embodiment of the rotor with tilting wings Within the meaning of this invention is a variant, wherein the tilting wings still additionally with movable wing elements are equipped. Wind power machines with rotors of this kind can already at about 5 m / s wind speed - the most common after measurements continental wind speed - reach their rated power, thereby her about 10 times the energy of conventional Deliver wind turbines with a constant rotor diameter. This is achieved in particular by the number of operating hours in the Year increased where the wind turbine delivers its rated output.
Der Rotor mit kippbaren Rotorflügeln im Sinne dieser Erfindung kann zeichnerisch folgendermaßen dargestellt werden:Of the Rotor with tiltable rotor blades For the purposes of this invention can be represented graphically as follows become:
Funktionsweise
einer Windkraftmaschine mit einem Rotor im Sinne dieser Erfindung:
bei kleineren Windgeschwindigkeiten werden die kippbaren Flügelteile
mittels der Flügel-Stützvorrichtung
(
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022731A DE102004022731A1 (en) | 2004-05-07 | 2004-05-07 | Rotor for a wind power installation comprises blades joined in the region close to the rotating axle via a power-transferring axle arranged tangentially to the axis of rotation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022731A DE102004022731A1 (en) | 2004-05-07 | 2004-05-07 | Rotor for a wind power installation comprises blades joined in the region close to the rotating axle via a power-transferring axle arranged tangentially to the axis of rotation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004022731A1 true DE102004022731A1 (en) | 2005-12-01 |
Family
ID=35267348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004022731A Ceased DE102004022731A1 (en) | 2004-05-07 | 2004-05-07 | Rotor for a wind power installation comprises blades joined in the region close to the rotating axle via a power-transferring axle arranged tangentially to the axis of rotation |
Country Status (1)
Country | Link |
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DE (1) | DE102004022731A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008052473A1 (en) | 2008-10-20 | 2010-04-22 | Gunter Kreft | Wind power generator has horizontal rotor axis and gondola arranged on tower to rotate around vertical axis, where rotor blades are provided on hub, which are arranged to rotate or tilt to axis of rotor |
DE202008014000U1 (en) | 2008-10-20 | 2011-02-03 | Kreft, Gunter | Wind power engine with horizontal rotor axis |
WO2019238192A1 (en) * | 2018-06-14 | 2019-12-19 | Vestas Wind Systems A/S | A wind turbine with hinged blades having a hinge position between inner and outer tip end of the blades |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2546884A1 (en) * | 1975-10-20 | 1977-04-21 | Goslich Hans Dietrich | Wind operated turbine for power production - has blades pivoted on pins to limit axial bending moments |
DE3130257A1 (en) * | 1981-07-31 | 1983-02-17 | Louis L. 7570 Baden-Baden Lepoix | Device for converting the kinetic energy of the wind into another type of energy, preferably into electric energy |
DE3628626A1 (en) * | 1986-08-22 | 1988-02-25 | Peter Dipl Ing Frieden | Propeller windmill with expanded field of application |
-
2004
- 2004-05-07 DE DE102004022731A patent/DE102004022731A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2546884A1 (en) * | 1975-10-20 | 1977-04-21 | Goslich Hans Dietrich | Wind operated turbine for power production - has blades pivoted on pins to limit axial bending moments |
DE3130257A1 (en) * | 1981-07-31 | 1983-02-17 | Louis L. 7570 Baden-Baden Lepoix | Device for converting the kinetic energy of the wind into another type of energy, preferably into electric energy |
DE3628626A1 (en) * | 1986-08-22 | 1988-02-25 | Peter Dipl Ing Frieden | Propeller windmill with expanded field of application |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008052473A1 (en) | 2008-10-20 | 2010-04-22 | Gunter Kreft | Wind power generator has horizontal rotor axis and gondola arranged on tower to rotate around vertical axis, where rotor blades are provided on hub, which are arranged to rotate or tilt to axis of rotor |
DE202008014000U1 (en) | 2008-10-20 | 2011-02-03 | Kreft, Gunter | Wind power engine with horizontal rotor axis |
DE102008052473B4 (en) * | 2008-10-20 | 2013-07-04 | Gunter Kreft | Wind power engine with horizontal rotor axis |
WO2019238192A1 (en) * | 2018-06-14 | 2019-12-19 | Vestas Wind Systems A/S | A wind turbine with hinged blades having a hinge position between inner and outer tip end of the blades |
US11319921B2 (en) | 2018-06-14 | 2022-05-03 | Vestas Wind Systems A/S | Wind turbine with hinged blades having a hinge position between inner and outer tip end of the blades |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licences declared | ||
8131 | Rejection |