WO2012040320A3 - Wind turbine with multi-stage blades - Google Patents
Wind turbine with multi-stage blades Download PDFInfo
- Publication number
- WO2012040320A3 WO2012040320A3 PCT/US2011/052540 US2011052540W WO2012040320A3 WO 2012040320 A3 WO2012040320 A3 WO 2012040320A3 US 2011052540 W US2011052540 W US 2011052540W WO 2012040320 A3 WO2012040320 A3 WO 2012040320A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wind turbine
- blades
- blade
- rotation
- stage blades
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/03—Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors
-
- 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
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
- F05B2240/221—Rotors for wind turbines with horizontal axis
- F05B2240/2211—Rotors for wind turbines with horizontal axis of the multibladed, low speed, e.g. "American farm" type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
-
- 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
- F05B2240/33—Shrouds which are part of or which are rotating with the rotor
-
- 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
Abstract
A wind turbine includes a first set of wind turbine blades mounted for rotation about an axis of rotation, and a second set of wind turbine blades mounted for rotation about the axis of rotation with the first set of blades. Each blade of the first set of wind turbine blades includes a blade surface formed by at least two blade portions. Further, each blade of the second set of blades includes a blade surface area that is formed by at least one blade portion, which has a different blade surface area configuration than the surface area of the blades of the first set of blades.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US38494910P | 2010-09-21 | 2010-09-21 | |
US61/384,949 | 2010-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012040320A2 WO2012040320A2 (en) | 2012-03-29 |
WO2012040320A3 true WO2012040320A3 (en) | 2012-05-10 |
Family
ID=45874348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/052540 WO2012040320A2 (en) | 2010-09-21 | 2011-09-21 | Wind turbine with multi-stage blades |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2012040320A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10788016B2 (en) | 2017-05-10 | 2020-09-29 | Gerald L. Barber | Transitioning wind turbine |
DK3635248T3 (en) * | 2017-05-10 | 2023-09-18 | Gerald Barber | SEGMENTED AIRFOIL DESIGN FOR GUIDE WIRES |
CH718281A1 (en) * | 2021-01-25 | 2022-07-29 | De Martini Max | Wind turbine with offset blades. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6899523B2 (en) * | 1999-12-24 | 2005-05-31 | Aloys Wobben | Rotor blade for a wind power installation |
WO2007057021A1 (en) * | 2005-11-21 | 2007-05-24 | L.M. Glasfiber S/A | A wind power plant with extra set of blades |
US20080226450A1 (en) * | 2005-08-05 | 2008-09-18 | Joe Clarke | Turbine with Coaxial Sets of Blades |
US20100215502A1 (en) * | 2007-03-30 | 2010-08-26 | Distributed Thermal Systems Ltd. | Multistage wind turbine with variable blade displacement |
-
2011
- 2011-09-21 WO PCT/US2011/052540 patent/WO2012040320A2/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6899523B2 (en) * | 1999-12-24 | 2005-05-31 | Aloys Wobben | Rotor blade for a wind power installation |
US20080226450A1 (en) * | 2005-08-05 | 2008-09-18 | Joe Clarke | Turbine with Coaxial Sets of Blades |
WO2007057021A1 (en) * | 2005-11-21 | 2007-05-24 | L.M. Glasfiber S/A | A wind power plant with extra set of blades |
US20100215502A1 (en) * | 2007-03-30 | 2010-08-26 | Distributed Thermal Systems Ltd. | Multistage wind turbine with variable blade displacement |
Also Published As
Publication number | Publication date |
---|---|
WO2012040320A2 (en) | 2012-03-29 |
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