WO2006065248A2 - Diffuser-augmented wind turbine - Google Patents
Diffuser-augmented wind turbine Download PDFInfo
- Publication number
- WO2006065248A2 WO2006065248A2 PCT/US2004/042620 US2004042620W WO2006065248A2 WO 2006065248 A2 WO2006065248 A2 WO 2006065248A2 US 2004042620 W US2004042620 W US 2004042620W WO 2006065248 A2 WO2006065248 A2 WO 2006065248A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- assembly
- drum
- diffuser
- rotor
- rotor drum
- Prior art date
Links
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
-
- 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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
-
- 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
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- 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
- F05B2240/10—Stators
- F05B2240/13—Stators to collect or cause flow towards or away from turbines
- F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
-
- 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
-
- 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
- Y02E10/728—Onshore wind turbines
Definitions
- Wind turbines are in widespread use for the generation of electrical energy.
- a multi-blade turbine is rotatably mounted on a support such as a pole or tower to be driven by surface winds, the turbine in turn driving an electrical generator coupled, for example, to electrical utility lines.
- the turbine can be rotated about a vertical axis of the pole or tower to compensate for shifts in wind direction.
- the improvement of this invention relates to integration of the turbine blades with a surrounding hollow cylindrical-shell rotor drum, the drum in turn being rotatably supported within a central part of the surrounding diffuser.
- a central hub and supporting shaft for the turbine blades is eliminated, and blade stiffness is significantly increased.
- the blades and rotor drum can be cast, or injection molded in a single manufacturing step.
- a diffuser-augmented wind turbine for generating electrical power, and having a diffuser outer-housing shell with a cylindrical portion rotatably supporting a rotor drum having an inner surface rigidly supporting a plurality of turbine blades, the rotor drum being in driving engagement with a rotatable electrical generator.
- the device can also be operated in reverse as a wind-generating fan by supplying electrical energy to the generator to act as a motor.
- FIG. 1 is a perspective view of a pole-mounted wind-turbine assembly according to the invention
- FIG. 2 is a front view of a blade and rotor-drum assembly
- FIG. 3 is a sectional side elevation of the turbine assembly
- FIG. 4 is an exploded perspective view of the turbine assembly shown in FIG. 3;
- FIG. 5 is a view similar to FIG. 3, but showing a side-mounted belt-driven electrical generator
- FIG. 6 is a perspective view of an embodiment using inlet guide vanes. DETAILED DESCRIPTION OF THE INVENTION
- FIG. 1 shows a diff user- augmented wind- turbine assembly 10 according to the invention, and rotatably mounted on a conventional support pole 11 so it can be moved by a fin 12 to compensate for shifting wind directions.
- the assembly has an outer diffuser shell 15, within which can be seen a blade and rotor-drum assembly 16 as described in greater detail below.
- FIG. 2 shows assembly 16 in greater detail, and as having an outer cylindrical rotor drum 18, with turbine blades 19 extending radially therein, and preferably integrally formed with the rotor drum.
- the assembly can be cast or of welded construction if made of metal (e.g., aluminum), or integrally injected molded if made from a composite material strengthened by glass, carbon, or similar reinforcing fibers. Though six blades are shown, the number of blades can be selected by the designer. Multiple blades, such as five or six, are preferred as they improve turbine efficiency, as well as increasing the rigidity of assembly 16. Turbine-blade strength and stiffness is significantly increased by the fixed support of the blades on the drum. The assembly is stable and balanced, and can be safely operated at high wind speeds encountered in storm conditions.
- FIG. 3 is a sectional side elevation of one embodiment of assembly 10, and shows assembly 16 as rotatably mounted within diffuser shell 15.
- the diffuser shell is preferably molded from a strong composite material, and has an outwardly divergent section 21 which merges with outwardly stepped ring-shaped inner and outer cylindrical support sections 22 and 23.
- An end portion 24 of the diffuser shell is separately formed, and is rigidly secured to a more forward part of the diffuser shell after the blade and rotor drum is fitted therein.
- the outlet end of the diffuser shell may be made more divergent to optimize aerodynamic conditions.
- a pair of spaced-apart ring-shaped bearings 26 have outer races secured to the inner surface of support section 22, and inner races secured to the outer surface of the rotor drum, thereby rotatably mounting assembly 16 within the diffuser shell.
- the absence of any clearance between the blade tips and the rotor drum (which forms a cylindrical part of the diffuser) is another feature eliminating tip losses, and producing high turbine efficiency.
- Magnetic bearings can also be used to augment bearings 26 for lower friction at high rotational speeds
- FIG. 3, and the exploded view of FIG. 4 positions the components of an electrical generator assembly 28 cylindrically around the rotor drum. These components include a cylindrical assembly 29 of permanent magnets secured to the outer surface of the rotor drum to rotate therewith. Slightly outwardly spaced from the magnet assembly is a cylindrical assembly 30 of stator coils secured to a support ring 31 which is in turn rigidly secured to the inner surface of support section 23.
- FIG. 5 shows an alternative embodiment using a conventional drum-shaped electrical generator 33 secured at one side of support section 23.
- Generator 33 is driven by a flexible timing belt 34 engaged with a toothed wheel on the generator, and extending around a cylindrically toothed section of the rotor drum.
- FIG. 6 shows another alternative embodiment using an assembly 35 of stator vanes or inlet guide vanes secured within the inner end of outwardly divergent section 21 of the diffuser shell.
- the use of such vanes is a known technique enabling use of fixed-pitch turbine blades, but with the advantages of more complex variable-pitch blades.
- the diffuser shell can also be lined with a sound-absorbing material for noise reduction during turbine operation.
- wind-turbine assembly examples include "reverse" operation as a wind-generating fan, by applying electrical energy to the generator which then acts as a motor to rotate the blades.
- Another application involves adding blades to the outside of the rotor drum which is appropriately sealed to act as a wind-driven water pump, air compressor, or fan.
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)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002590918A CA2590918A1 (en) | 2004-12-17 | 2004-12-17 | Diffuser-augmented wind turbine |
EP04814763A EP1834087A4 (en) | 2004-12-17 | 2004-12-17 | Diffuser-augmented wind turbine |
PCT/US2004/042620 WO2006065248A2 (en) | 2004-12-17 | 2004-12-17 | Diffuser-augmented wind turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2004/042620 WO2006065248A2 (en) | 2004-12-17 | 2004-12-17 | Diffuser-augmented wind turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006065248A2 true WO2006065248A2 (en) | 2006-06-22 |
WO2006065248A3 WO2006065248A3 (en) | 2007-04-12 |
Family
ID=36588289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/042620 WO2006065248A2 (en) | 2004-12-17 | 2004-12-17 | Diffuser-augmented wind turbine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1834087A4 (en) |
CA (1) | CA2590918A1 (en) |
WO (1) | WO2006065248A2 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1885047A1 (en) * | 2006-07-31 | 2008-02-06 | C.R.F. Societa' Consortile per Azioni | Electric generator device actuated by a fluid flow |
WO2008118405A2 (en) * | 2007-03-23 | 2008-10-02 | Flodesign Wind Turbine Corporation | Wind turbine with mixers and ejectors |
GB2461286A (en) * | 2008-06-26 | 2009-12-30 | Univ Lancaster | Fluid turbine |
GB2462469A (en) * | 2008-08-08 | 2010-02-10 | James Arthur Goulding | Venturi inlet wind turbine |
WO2010036216A1 (en) * | 2008-09-23 | 2010-04-01 | Flodesign Wind Turbine Corporation | Wind turbine with mixers and ejectors |
ITRC20090002A1 (en) * | 2009-02-10 | 2010-08-11 | Antonino Cutrupi | SELF-STABILIZING SELF-KINETIC TURBINE SUPPORTED BY HINGED HORIZONTAL FRAME, WITH TWO DIFFERENT CONCENTRIC IDRODYNAMIC SECTORS, INTENDED FOR ENERGY CONVERSION PLANTS FROM TIDAL AND RIVER WATER CURRENTS |
DE102009007870A1 (en) * | 2009-02-06 | 2010-08-12 | Rolf Dieter Mohl | Propeller blade for a propeller for a wind energy module, housing for a wind energy module, wind energy module, wind turbine and use of a wind turbine |
DE102009015669A1 (en) * | 2009-03-31 | 2010-10-07 | Ea Energiearchitektur Gmbh | Small wind turbine |
US7995002B2 (en) | 2007-09-19 | 2011-08-09 | Global Oled Technology Llc | Tiled passive matrix electro-luminescent display |
WO2011008720A3 (en) * | 2009-07-14 | 2011-10-20 | Windtamer Corporation | Vorticity reducing cowling for a diffuser augmented wind turbine assembly |
EP2597759A1 (en) | 2011-11-24 | 2013-05-29 | 4 Power | Wind turbine |
FR2986386A1 (en) * | 2012-02-01 | 2013-08-02 | Bernard Perriere | Rotor for use in e.g. electric current generator, of self controlled circular drain, has extension comprising contact surface cooperating with holding unit by mechanical contact to force trajectory of magnet according to rotation plane |
US9234081B2 (en) | 2010-06-08 | 2016-01-12 | King Abdulaziz City For Science And Technology | Method of manufacturing a nitro blue tetrazolium and polyvinyl butyral based dosimeter film |
WO2016145520A1 (en) | 2015-03-16 | 2016-09-22 | O'hagan Peter K | Improved wind turbine suitable for mounting without a wind turbine tower |
WO2016199317A1 (en) * | 2015-06-08 | 2016-12-15 | 圀博 三宅 | Fluid-based electricity generating device and rotor module |
US9932959B2 (en) | 2011-03-10 | 2018-04-03 | King Abdulaziz City For Science And Technology | Shrounded wind turbine configuration with nozzle augmented diffuser |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11300095B2 (en) | 2017-09-14 | 2022-04-12 | Peter K. O'Hagan | Wind turbine suitable for mounting without a wind turbine tower |
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- 2004-12-17 EP EP04814763A patent/EP1834087A4/en not_active Withdrawn
- 2004-12-17 CA CA002590918A patent/CA2590918A1/en not_active Abandoned
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Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7592712B2 (en) | 2006-07-31 | 2009-09-22 | C.R.F. Società Consortile Per Azioni | Electric generator device actuated by a fluid flow |
EP1885047A1 (en) * | 2006-07-31 | 2008-02-06 | C.R.F. Societa' Consortile per Azioni | Electric generator device actuated by a fluid flow |
WO2008118405A2 (en) * | 2007-03-23 | 2008-10-02 | Flodesign Wind Turbine Corporation | Wind turbine with mixers and ejectors |
WO2008118405A3 (en) * | 2007-03-23 | 2009-09-24 | Flodesign Wind Turbine Corporation | Wind turbine with mixers and ejectors |
US7995002B2 (en) | 2007-09-19 | 2011-08-09 | Global Oled Technology Llc | Tiled passive matrix electro-luminescent display |
GB2461286A (en) * | 2008-06-26 | 2009-12-30 | Univ Lancaster | Fluid turbine |
GB2461286B (en) * | 2008-06-26 | 2012-12-12 | Univ Lancaster | Fluid turbine |
GB2462469A (en) * | 2008-08-08 | 2010-02-10 | James Arthur Goulding | Venturi inlet wind turbine |
WO2010036216A1 (en) * | 2008-09-23 | 2010-04-01 | Flodesign Wind Turbine Corporation | Wind turbine with mixers and ejectors |
DE102009007870A1 (en) * | 2009-02-06 | 2010-08-12 | Rolf Dieter Mohl | Propeller blade for a propeller for a wind energy module, housing for a wind energy module, wind energy module, wind turbine and use of a wind turbine |
DE102009007870B4 (en) * | 2009-02-06 | 2014-10-30 | Rolf Dieter Mohl | Propeller blade for a propeller for a wind energy module, housing for a wind energy module, wind energy module, wind turbine and use of a wind turbine |
WO2010092611A1 (en) * | 2009-02-10 | 2010-08-19 | Antonino Cutrupi | Self-stabilizing kinetic turbine |
ITRC20090002A1 (en) * | 2009-02-10 | 2010-08-11 | Antonino Cutrupi | SELF-STABILIZING SELF-KINETIC TURBINE SUPPORTED BY HINGED HORIZONTAL FRAME, WITH TWO DIFFERENT CONCENTRIC IDRODYNAMIC SECTORS, INTENDED FOR ENERGY CONVERSION PLANTS FROM TIDAL AND RIVER WATER CURRENTS |
DE102009015669A1 (en) * | 2009-03-31 | 2010-10-07 | Ea Energiearchitektur Gmbh | Small wind turbine |
WO2011008720A3 (en) * | 2009-07-14 | 2011-10-20 | Windtamer Corporation | Vorticity reducing cowling for a diffuser augmented wind turbine assembly |
US9234081B2 (en) | 2010-06-08 | 2016-01-12 | King Abdulaziz City For Science And Technology | Method of manufacturing a nitro blue tetrazolium and polyvinyl butyral based dosimeter film |
US9932959B2 (en) | 2011-03-10 | 2018-04-03 | King Abdulaziz City For Science And Technology | Shrounded wind turbine configuration with nozzle augmented diffuser |
EP2597759A1 (en) | 2011-11-24 | 2013-05-29 | 4 Power | Wind turbine |
FR2986386A1 (en) * | 2012-02-01 | 2013-08-02 | Bernard Perriere | Rotor for use in e.g. electric current generator, of self controlled circular drain, has extension comprising contact surface cooperating with holding unit by mechanical contact to force trajectory of magnet according to rotation plane |
WO2016145520A1 (en) | 2015-03-16 | 2016-09-22 | O'hagan Peter K | Improved wind turbine suitable for mounting without a wind turbine tower |
CN107532565A (en) * | 2015-03-16 | 2018-01-02 | 皮特·K.·奥黑根 | Improved wind turbine suitable for the installation of no wind turbine tower |
CN111911343A (en) * | 2015-03-16 | 2020-11-10 | 皮特·K.·奥黑根 | Improved wind turbine adapted for installation without wind turbine tower |
WO2016199317A1 (en) * | 2015-06-08 | 2016-12-15 | 圀博 三宅 | Fluid-based electricity generating device and rotor module |
JPWO2016199317A1 (en) * | 2015-06-08 | 2018-03-15 | 三森株式会社 | Wind power generator and rotor module |
Also Published As
Publication number | Publication date |
---|---|
EP1834087A2 (en) | 2007-09-19 |
CA2590918A1 (en) | 2006-06-22 |
WO2006065248A3 (en) | 2007-04-12 |
EP1834087A4 (en) | 2009-10-21 |
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