GB2589307A - Tidal turbine blades - Google Patents

Tidal turbine blades Download PDF

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Publication number
GB2589307A
GB2589307A GB1915807.0A GB201915807A GB2589307A GB 2589307 A GB2589307 A GB 2589307A GB 201915807 A GB201915807 A GB 201915807A GB 2589307 A GB2589307 A GB 2589307A
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GB
United Kingdom
Prior art keywords
turbine blade
tidal turbine
tidal
inertial mass
mass block
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Granted
Application number
GB1915807.0A
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GB201915807D0 (en
GB2589307B (en
Inventor
Connor Gary
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Nova Innovation Ltd
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Nova Innovation Ltd
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Filing date
Publication date
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Priority to GB1915807.0A priority Critical patent/GB2589307B/en
Publication of GB201915807D0 publication Critical patent/GB201915807D0/en
Publication of GB2589307A publication Critical patent/GB2589307A/en
Application granted granted Critical
Publication of GB2589307B publication Critical patent/GB2589307B/en
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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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/126—Rotors for essentially axial flow, e.g. for propeller turbines
    • 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
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

A tidal turbine blade 100 defines an outer hydrodynamic shape 120 and comprises one or more strength members 110 configured to provide structural rigidity to the tidal turbine blade, and a separate inertial mass block 130 within the tidal turbine blade. The inertial mass block 130 may be elongate and may be connected to the strength member 110. The strength member may be a metal spine or spar 110, and the hydrodynamic form may be defined by a composite outer skin 120. The blade 100 may be attached to a hub by a non-circular flange (111, figure 2).

Description

TIDAL TURBINE BLADES
Technical Field
The present disclosure relates to tidal turbine blades including, but not limited to, a tidal turbine blade with an inertial mass block, a tidal turbine blade with a metal spine and composite skin, and a tidal turbine blade with a non-circular root flange.
Background
Known tidal turbines include tidal turbine blades connected to a nacelle which comprises a generator. The tidal turbine is placed underwater such that the tidal turbine blades may be rotated by currents in the water so as to produce electricity by the generator.
The tidal turbine blades form important parts of the tidal turbine as the blades at parts of the tidal turbine which interact with the currents in the water to cause rotation thereby generating electricity by the generator.
In known tidal turbines, strong currents in the water will lead to rapid increases in rotational speed of the blades. These high rotational speeds can cause large forces and torques which may damage the tidal turbine. Therefore, there is a need for a tidal turbine blade which is safe to operate even during periods of strong currents.
The shape of the tidal turbine blade is critical for the efficient production of electricity. In known tidal turbines, the outer hydrodynamic shape of the tidal turbine blade is difficult to accurately and freely form due to material restrictions which attempt to balance structural and hydrodynamic properties of the tidal turbine blade. Therefore, there is a need for an easy-to-manufacture tidal turbine blade with an accurately and freely formed outer hydrodynamic shape which is structurally sufficient in use.
As noted above, the shape of the tidal turbine blade is critical for the efficient production of electricity. Accordingly, there is a general need for an improved hydrodynamic shape of tidal turbine blade.
Summary of the Disclosure
Accordingly, it is an object of the present disclosure to provide a tidal turbine blade which is safe to operate even during periods of strong currents. It is also an object of the present disclosure to provide an easy-to-manufacture tidal turbine blade with an accurately and freely formed outer hydrodynamic shape which is structurally sufficient in use. It is also an object of the present invention to provide an improved hydrodynamic shape of a tidal turbine blade.
These objectives and others are achieved with the devices of Claims 1, 11 and 17.
Preferred embodiments and implementations are recited in the dependent claims.
In an aspect of the present disclosure, there is provided a tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: one or more strength members configured to provide structural rigidity to the tidal turbine blade; an inertial mass block disposed within the tidal turbine blade, the inertial mass block being independent of the one or more strength members.
As used herein, as would be understood by the skilled person, one object being 'independent' of another object refers to the objects: not being one and the same object; the one object being part of the another object; the another object being part of the one object; and not performing the same or similar function within the tidal turbine.
With such configurations, the rotational inertia of the blade is increased thereby reducing the chances of rapid overspeed due to large currents. Therefore, these configurations provide for a tidal turbine blade which is safe to operate even during periods of strong currents.
In certain embodiments, the tidal turbine blade comprises exactly one or more strength members. As used herein, the term 'one or more strength members' refers to all strength members present in any given tidal turbine blade.
The one or more strength members are configured to provide structural rigidity to the tidal turbine blade so as to maintain the outer hydrodynamic shape when in use. The one or more strength members provide the entire structural rigidity of the tidal turbine blade.
In certain embodiments, the one or more strength members are configured to resist compression, elongation, bending and/or torsion of the tidal turbine blade.
The inertial mass block does not provide structural rigidity to the tidal turbine blade. In certain embodiments, the inertial mass block does not resist compression, elongation, bending and/or torsion of the tidal turbine blade.
In certain embodiments, the inertial mass block is connected to the one or more strength members. In certain embodiments, the connection between the inertial mass block and the one or more strength members has a maximum connection strength merely sufficient to support the inertial mass block when the tidal turbine blade is in use.
In certain embodiments, the tidal turbine blade comprises an outer shell defining the outer hydrodynamic shape of the tidal turbine blade.
In certain embodiments, the outer shell forms part of the one or more strength members.
In certain embodiments, the outer shell forms the entirety of the one or more strength members. In such embodiments, the outer shell is a monocoque configured to provide structural rigidity to the tidal turbine blade. The monocoque is configured to provide the entire structural rigidity of the tidal turbine blade.
20 25 30 In certain embodiments, the one or more strength members are disposed within the outer shell. The outer shell and the one or more strength members are not one and the same.
The outer shell does not form part of the one or more strength members. The one or more strength members does not form part of the outer shell.
In certain embodiments, the outer shell does not provide structural rigidity to the tidal turbine blade. In certain embodiments, the outer shell does not resist compression, elongation, bending and/or torsion of the tidal turbine blade.
In certain embodiments, the one or more strength members comprise a spar and shear web assembly.
As used herein, the term 'spar and shear web assembly' refers to all spar and shear web members present in any given tidal turbine blade.
In certain embodiments, the inertial mass block is disposed nearer to the root of the tidal turbine blade than its tip.
With such configurations, the inertial mass block requires less structural support from the one or more strength members thereby reducing the required structural reinforcing of the tidal turbine blade.
In certain embodiments, the inertial mass block is disposed at/in/proximate to the root of the tidal turbine blade.
With such configurations, the inertial mass block requires less structural support from the one or more strength members thereby reducing the required structural reinforcing of the tidal turbine blade.
In certain embodiments, the inertial mass block is disposed nearer to the tip of the tidal turbine blade than its root With such configurations, the required mass of the inertial mass block is reduced whilst maintaining effective resistance to overspeed.
In certain embodiments, the inertial mass block is disposed at/in/proximate to the tip of the tidal turbine blade.
With such configurations, the required mass of the inertial mass block is reduced whilst maintaining effective resistance to overspeed.
In certain embodiments, the inertial mass block is disposed generally on the longitudinal axis of the tidal turbine blade.
With such configurations, the inertial mass block minimises moments within the tidal turbine blade.
In certain embodiments, the longitudinal axis of the tidal turbine blade passes through the centre of the root flange.
In certain embodiments, the longitudinal axis of the tidal turbine blade passes through the centre of mass of the tidal turbine blade with or without the inertial mass block.
In certain embodiments, the inertial mass block is elongate. In certain embodiments, the longitudinal axis of the inertial mass block is parallel/coincident with the longitudinal axis of the tidal turbine blade.
In certain embodiments, the inertial mass block comprises/consists of a metal or alloy, such as steel, cast iron or lead.
In certain embodiments, the density of the inertial mass block is greater than about 7,850 kg/m3, and optionally greater than about 11,300 kg/m3.
In another aspect of the present disclosure, there is provided a tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: a metal spine extending along the length of the tidal turbine blade, the metal spine including a root flange configured for attachment to a rotor of a tidal turbine; and a composite skin surrounding at least part of the metal spine so as to define at least a portion of the outer hydrodynamic shape of the tidal turbine blade.
With such configurations, it is possible to provide an easy-to-manufacture tidal turbine blade with an accurately and freely formed outer hydrodynamic shape which is structurally sufficient in use.
In certain embodiments, the metal spine extends along substantially the entire length of the tidal turbine blade. In certain embodiments, the metal spine extends along only a portion of the length of the tidal turbine blade. In certain embodiments, the metal spine extends along the majority of the length of the tidal turbine blade.
In certain embodiments, the composite skin surrounds substantially the entire metal spine so as to define substantially the entire outer hydrodynamic shape of the tidal turbine blade.
In certain embodiments, the composite skin is a fibrous composite skin. In certain embodiments, the composite skin comprises: a glass fiber, a fiber-reinforced epoxy composite, a polyester resin or a cast thermoplastic such as nylon.
In certain embodiments, the composite skin is formed from molding. In certain embodiments, the composite skin is formed from vacuum molding into a female mold with the metal spine disposed therein.
In certain embodiments, the composite skin is bonded to the metal spine by an adhesive.
In certain embodiments, wherein the metal spine comprises/consists of cast iron.
The spine disclosed herein may be made of any other suitable material. Accordingly, in another aspect of the present disclosure, there is provided a tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: a spine extending along the length of the tidal turbine blade, the spine including a root flange configured for attachment to a rotor of a tidal turbine; and a composite skin surrounding at least part of the spine so as to define at least a portion of the outer hydrodynamic shape of the tidal turbine blade.
In certain embodiments, the spine is made of a higher density material than the composite skin.
In certain embodiments, the spin is cast iron and the composite skin in epoxy-glass skin.
In another aspect of the present disclosure, there is provided a method of manufacturing a tidal turbine blade, the method comprising: providing a spine extending along the length of the tidal turbine blade; and surrounding at least part of the spine with a composite skin so as to define at least a portion of the outer hydrodynamic shape of the tidal turbine blade.
In certain implementations, the composite skin is formed by molding. In certain embodiments, the composite skin is vacuum formed into a female mold whilst the spine is disposed therein.
In certain implementations, the composite skin is bonded to the metal spine by an adhesive.
In certain implementations, the tidal turbine blade is any of the tidal turbine blades disclosed herein.
In another aspect of the present disclosure, there is provided a tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: a blade root with a non-circular cross-section; and a non-circular root flange configured for attachment to a rotor of a tidal turbine.
In known tidal turbines, the outer hydrodynamic shape of the tidal turbine blade is restricted due to the root flange (for connection to the rotor of the tidal turbine) being circular. Accordingly, in known tidal turbine blades, the outer hydrodynamic shape in the root portion is circular in cross-section.
However, with the above-noted configurations of the present disclosure, the non-circular flange allows for an improved hydrodynamic shape of the tidal turbine blade as the root flange does dictate the shape of the root portion.
In certain embodiments, the non-circular root flange is elongate (in cross-section) In certain embodiments, the non-circular root flange is generally elliptical, oval or round-corner rectangular (in cross-section).
In certain embodiments, the major axis of the root flange is generally parallel to a major axis of the cross section of the shaft The major axes being perpendicular to the longitudinal axis of the tidal turbine blade (as described above).
In another aspect of the present disclosure, there is provided a tidal turbine comprising any of the tidal turbine blades disclosed herein.
All of the above embodiments are equally applicable to all of the above aspects, as will be
evident from the following exemplary description.
Brief Description of the Drawings
For a better understanding of the present disclosure and to show how the same may be carried into effect, reference will now be made, by way of example only, to the accompanying drawings, in which: Figure 1 shows a perspective view of a tidal turbine blade including a spine and skin; and Figure 2 shows cross-section of the tidal turbine blade showing the root flange.
Detailed Description
Figure 1 shows a perspective view of a tidal turbine blade 100.
The tidal turbine blade 100 includes a metal spine 110 which is a strength member of the tidal turbine blade 100. The metal spine 110 is made from cast iron. The metal spine 110 extends along the entire length of the tidal turbine blade 100. The metal spine 110 provides structural rigidity to the tidal turbine blade 100 such that compression, elongation, bending and/or torsion of the tidal turbine blade 100 is resisted. The metal spine 110 is configured to provide structural rigidity to the tidal turbine blade so as to maintain the outer hydrodynamic shape of the tidal turbine blade 100 in use.
The metal spine 110 comprises a root flange 111 for connection to the rotor of a tidal turbine (not shown). The root flange 111 is the proximal-most part of the tidal turbine blade 100. The root flange 111 comprises several holes for bolts to pass therethrough so as to connect the tidal turbine blade 100 to the rotor.
The root R of the tidal turbine blade 100 is the distal portion of the tidal turbine blade 100 starting from the maximum chord length of the tidal turbine blade 100. The root R is non-circular in cross-section. Specifically, the root R is hydrodynamically shaped. As shown in Figure 1, the root R is generally elongate and elliptical in shape.
The flange root 111 corresponds in shape to the hydrodynamic portion of the root R. In particular, the flange root 111 is also generally elongate and elliptical in shape.
In this regard, reference is made to Figure 2 which shows a cross section of the tidal turbine blade 100 at the root flange 111.
Figures 1 and 2 also show the tidal turbine blade 100 further comprises an inertial mass block 130. The inertial mass block 130 is disposed within the tidal turbine blade 100 and is independent from the one or more strength members of the tidal turbine 100 (i.e. independent from the metal spine 110). The inertial mass block 130 is connected to the metal spin 130 by any suitable means (not shown) such that these connection means act to merely support the inertial mass block 130.
The inertial mass block 130 is disposed in the root R of the tidal turbine blade 100. The inertial mass block 130 is disposed on the longitudinal axis L of the tidal turbine blade 100.
The inertial mass block 130 is elongate and the longitudinal axis of the inertial mass block 130 is coincident with the longitudinal axis L of the tidal turbine blade 100.
The inertial mass block 130 may be made of a metal or alloy such as steel, cast iron, depleted uranium or lead.
Figure 1 shows that the tidal turbine blade 100 further comprises a composite skin 120 surrounding the metal spine 110 so as to define substantially the entirely of the outer hydrodynamic shape of the tidal turbine blade 100.
The composite skin 120 is attached to the metal spine 110 using adhesive. The composite skin 120 may be formed by vacuum molding. The composite skin 120 is an epoxy-glass skin.
Although particular embodiments of the disclosure have been disclosed herein in detail, this has been done by way of example and for the purposes of illustration only. The aforementioned embodiments are not intended to be limiting with respect to the scope of the appended claims.
For example, the root flange may be of any non-circular shape which aids with the hydrodynamic shaping of the root portion R Furthermore, the inertial mass block may be of any shape and disposed at any location so long as the inertial mass block does not form part of the structural elements of the tidal turbine blade and acts specifically to increase the inertia of the tidal turbine.
Additionally, the blade skin may cover only a portion of metal spine.
It is contemplated by the inventors that various substitutions, alterations, and modifications may be made to the invention without departing from the scope of the invention as defined by the appended claims.

Claims (20)

  1. CLAIMS: 1. A tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: one or more strength members configured to provide structural rigidity to the tidal turbine blade; and an inertial mass block disposed within the tidal turbine blade, the inertial mass block being independent of the one or more strength members.
  2. 2. The tidal turbine blade of Claim 1, comprising an outer shell defining the outer hydrodynamic shape of the tidal turbine blade.
  3. 3. The tidal turbine blade of Claim 2, wherein the outer shell forms part of or the entirety of the one or more strength members.
  4. 4. The tidal turbine blade of Claim 2, wherein the one or more strength members are disposed within the outer shell.
  5. 5. The tidal turbine blade of Claim 1, wherein the one or more strength members comprise a spar and shear web assembly.
  6. 6. The tidal turbine blade of any preceding claim, wherein the inertial mass block is disposed nearer to the root of the tidal turbine blade than its tip, and, optionally, wherein the inertial mass block is disposed at the root of the tidal turbine blade.
  7. 7. The tidal turbine blade of any one of Claims 1 to 5, wherein the inertial mass block is disposed nearer to the tip of the tidal turbine blade than its root, and, optionally, wherein the inertial mass block is disposed at the tip of the tidal turbine blade.
  8. 8. The tidal turbine blade of any preceding claim, wherein the inertial mass block is disposed generally on the longitudinal axis of the tidal turbine blade.
  9. 9. The tidal turbine blade of any preceding claim, wherein the inertial mass block comprises/consists of a metal or alloy, such as steel, cast iron or lead.
  10. 10. The tidal turbine of any preceding claim, wherein the density of the inertial mass block is greater than about 7,850 kg/m3, and optionally greater than about 11,300 kg/m3.
  11. 11. A tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: a metal spine extending along the length of the tidal turbine blade, the metal spine including a root flange configured for attachment to a rotor of a tidal turbine; and a composite skin surrounding at least part of the metal spine so as to define at least a portion of the outer hydrodynamic shape of the tidal turbine blade.
  12. 12. The tidal turbine blade of Claim 11, wherein the composite skin surrounds substantially the entire metal spine so as to define substantially the entire outer hydrodynamic shape of the tidal turbine blade.
  13. 13. The tidal turbine blade of Claim 11 or 12: wherein the composite skin is a fibrous composite skin; and/or wherein the composite skin comprises: a glass fiber, a fiber-reinforced epoxy composite, a polyester resin or a cast thermoplastic such as nylon.
  14. 14. The tidal turbine blade of any one of Claims 11 to 13, wherein the composite skin is formed from molding and, optionally, wherein the composite skin is formed from 25 vacuum molding into a female mold with the metal spine disposed therein.
  15. 15. The tidal turbine blade of any one of Claims 11 to 14, wherein the composite skin is bonded to the metal spine by an adhesive
  16. 16. The tidal turbine blade of any one of Claims 11 to 15, wherein the metal spine comprises/consists of cast iron.
  17. 17. A tidal turbine blade defining an outer hydrodynamic shape, the tidal turbine blade comprising: a blade root with a non-circular cross-section; and a non-circular root flange configured for attachment to a rotor of a tidal turbine.
  18. 18. The tidal turbine blade of Claim 17, wherein the non-circular root flange is elongate.
  19. 19. The tidal turbine blade of Claim 17 or 18, wherein the non-circular root flange is generally elliptical, oval or round-corner rectangular.
  20. 20. The tidal turbine blade of Claim 19, wherein the major axis of the root flange is generally parallel to a major axis of the cross section of the shaft.
GB1915807.0A 2019-10-31 2019-10-31 Tidal turbine blades Active GB2589307B (en)

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Application Number Priority Date Filing Date Title
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GB2589307A true GB2589307A (en) 2021-06-02
GB2589307B GB2589307B (en) 2023-04-26

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011801A1 (en) * 2002-07-31 2004-02-05 Bankuti Attila Wind turbine with blades of variable inertia
US20040091358A1 (en) * 2000-07-19 2004-05-13 Aloys Wobben Rotor blade hub
WO2012111913A2 (en) * 2011-02-16 2012-08-23 Lee Seung Geun Rotary body for a wind power generating apparatus
KR20120100284A (en) * 2011-03-03 2012-09-12 삼성중공업 주식회사 Wind power generator and blade therefor
KR20130021736A (en) * 2011-08-23 2013-03-06 삼성중공업 주식회사 Wind turbine
GB2494389A (en) * 2011-09-01 2013-03-13 Aviat Entpr Ltd Rotor blade
US20130119663A1 (en) * 2011-11-04 2013-05-16 Envision Energy (Denmark) Aps Wind turbine with additional rotor moment of inertia and a method for controlling a wind turbine with additional rotor moment of inertia
GB2508813A (en) * 2012-12-03 2014-06-18 Hugh Malcolm Ian Bell Turbine blade with individually adjustable blade sections
US20140227100A1 (en) * 2011-09-23 2014-08-14 Howden Solyvent-Ventect Rotating Machine Blade with Reinforced Modular Structure
EP3026257A1 (en) * 2014-11-28 2016-06-01 ALSTOM Renewable Technologies Vane for hydraulic turbine
WO2019150400A1 (en) * 2018-02-05 2019-08-08 Mishra Dishant Wind turbine system and method
CN110953112A (en) * 2018-09-27 2020-04-03 大连理工大学 Vertical shaft blade and forming method thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040091358A1 (en) * 2000-07-19 2004-05-13 Aloys Wobben Rotor blade hub
WO2004011801A1 (en) * 2002-07-31 2004-02-05 Bankuti Attila Wind turbine with blades of variable inertia
WO2012111913A2 (en) * 2011-02-16 2012-08-23 Lee Seung Geun Rotary body for a wind power generating apparatus
KR20120100284A (en) * 2011-03-03 2012-09-12 삼성중공업 주식회사 Wind power generator and blade therefor
KR20130021736A (en) * 2011-08-23 2013-03-06 삼성중공업 주식회사 Wind turbine
GB2494389A (en) * 2011-09-01 2013-03-13 Aviat Entpr Ltd Rotor blade
US20140227100A1 (en) * 2011-09-23 2014-08-14 Howden Solyvent-Ventect Rotating Machine Blade with Reinforced Modular Structure
US20130119663A1 (en) * 2011-11-04 2013-05-16 Envision Energy (Denmark) Aps Wind turbine with additional rotor moment of inertia and a method for controlling a wind turbine with additional rotor moment of inertia
GB2508813A (en) * 2012-12-03 2014-06-18 Hugh Malcolm Ian Bell Turbine blade with individually adjustable blade sections
EP3026257A1 (en) * 2014-11-28 2016-06-01 ALSTOM Renewable Technologies Vane for hydraulic turbine
WO2019150400A1 (en) * 2018-02-05 2019-08-08 Mishra Dishant Wind turbine system and method
CN110953112A (en) * 2018-09-27 2020-04-03 大连理工大学 Vertical shaft blade and forming method thereof

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GB201915807D0 (en) 2019-12-18
GB2589307B (en) 2023-04-26

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