WO2011067586A2 - Tidal turbine system - Google Patents
Tidal turbine system Download PDFInfo
- Publication number
- WO2011067586A2 WO2011067586A2 PCT/GB2010/051989 GB2010051989W WO2011067586A2 WO 2011067586 A2 WO2011067586 A2 WO 2011067586A2 GB 2010051989 W GB2010051989 W GB 2010051989W WO 2011067586 A2 WO2011067586 A2 WO 2011067586A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow
- turbine
- tidal
- turbine generator
- generator
- Prior art date
Links
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
- 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
- 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
-
- 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
- F03B15/00—Controlling
-
- 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
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
-
- 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
- F03B17/00—Other machines or engines
- F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
-
- 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/71—Adjusting of angle of incidence or attack of rotating blades as a function of flow velocity
-
- 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
-
- 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
- F05B2270/00—Control
- F05B2270/80—Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
- F05B2270/806—Sonars
-
- 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
- Y02E10/20—Hydro 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
- 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
Definitions
- the present invention relates to a tidal turbine system, particularly for use in a tidal flow energy generation system.
- Tidal energy is to a great extent predictable.
- the deterministic nature of the availability of power, together with its high density and the implicit absence of visual impact makes tidal energy extraction a very attractive proposition particularly since virtually the whole of the available resources remain untapped.
- Prior art is known which suggests applying a control signal to a tidal turbine generator responsive to the velocity of the tidal water flow in order to control the efficiency of the turbine generator as the tidal flow velocity varies with time.
- a control signal to a tidal turbine generator responsive to the velocity of the tidal water flow in order to control the efficiency of the turbine generator as the tidal flow velocity varies with time.
- the present invention provides a tidal flow energy generation system comprising: one or more tidal turbine generators; control means for controlling operation of the one or more tidal turbine generators; flow determination means for determining variations in the flow at a distance away from a respective turbine generator; wherein the control means operates using input from the flow determination means to predict a change in flow characteristics on course to impact on the respective turbine such that an operational parameter of the turbine generator may be varied in response to the control means.
- the system can operate to vary operation of the (or each) turbine generator in order to compensate for loading variations that will impact upon the turbine generator, the loading variations are predicted based upon the variations determined by the determination means. This reduces the risk of fatigue failure.
- the invention provides a method of operating a tidal flow generation system, the method comprising determining (pressure pulse) variations in the flow at a distance from the generator, predicting the pressure pulse loading that will impact a respective turbine generator and varying operation of the turbine generator to compensate for the predicted pressure pulse loading.
- the flow determination means is arranged to sense a pressure wave at a distance from the turbine generator and enable prediction of the pressure change that will occur at the turbine generator at a future instant.
- the control means will calculate predicted impact time or input instant and control the operational parameter (typically varying the turbine speed) to accommodate the change at the required future instant in order to minimise the effect of pressure pulse event at the turbine generator.
- Such a technique enables the effect of the pressure pulse created loading on the turbine generators to be compensated for, by appropriate variation in operation of the turbine generators.
- the effect of fatigue inducing stresses can be neutralised by ascertaining the anomalous wave effect or pressure loading that will shortly be impacting on the turbine generator and by knowing the distance and speed of approach of the pressure pulse anomalous flow effect the time at which the generator operation needs to be varied can be derived by the control system (and also the degree of variation in the operating parameters that is necessary).
- the flow determination means comprises a flow measurement arrangement.
- This may be a sonar and/or Doppler device.
- an Acoustic Doppler Current Profiler (ADCP) may be used for this purpose.
- the flow determination means is arranged to determine the flow at a distance way from the tidal turbine generator. Typically the flow will be measured a number of metres (5 to 50 metres for example) away from the turbine generator. This gives sufficient time lag for prediction of the pressure pulse load on course to impact, and the operation of the turbine generator may be varied in response to the prediction made.
- control means is arranged to derive the flow velocity.
- control means may be arranged to determine the predicted loading on the turbine generator as a result of the flow determined.
- the control output to the generator is varied in response to the predicted or measured parameter.
- control output to the generator is varied in response to the predicted or measured parameter provided a predetermined threshold value is met or exceeded.
- control means adjusts operating parameters of the turbine generator to moderate stresses that would otherwise act on the system.
- control means in response to the output from the determination means varies the turbine generator power output or load. Additionally or alternatively, in response to the output from the determination means the control means varies the turbine generator orientation and or configuration of the turbine rotor blades. For example the blade pitch may be varied.
- a plurality of turbine generators are provided (typically mounted on a common seabed structural mounting).
- the system is arranged to operate such that, in the event of the control means operating to vary operation of one of the turbine generators in response to the output of the determination means, the control means operates to vary operation another of the turbine generators in a compensatory manner. This provides that the overall output of the system can be maintained at a constant level (or nearer constant than would otherwise be the case if the compensatory variation of turbine operation was not put into effect).
- the tidal turbine generators are seabed mounted at the head of an upstanding mounting structure.
- the tidal turbine generators typically have a rotor comprising turbine blades.
- the invention provides a control system for a tidal flow generation system, the control system comprising flow determination means for determining variations in the flow; the control system operating such that control of the turbine generator may be varied in response to input into the control means from the flow determination means.
- parameters may be selected or tailored to provide desired operational characteristics.
- the parameters which may be selected or tailored are the blade stagger angle and/or the Tip Speed Ratio (TSR).
- TSR Tip Speed Ratio
- the stagger angle refers to the angle of attack or pitch of the blade with respect to the tidal flow direction.
- the blade pitch can be varied to vary the operational characteristics of the turbine.
- the tidal flow turbine system may include a mounting structure located on the sea bed, the mounting structure being parked in position by its own weight and secured against displacement primarily by frictional contact with the seabed.
- the tidal turbine system includes an interconnected framework structure arranged to rest on the seabed and support a plurality of spaced turbine generators.
- Figure 1 is a schematic representation of a known tidal flow turbine system in accordance with the invention
- Figure 2 is a schematic representation of a tidal flow energy generation system in accordance with the invention
- Figure 3 is a schematic representation of an alternative embodiment of tidal flow energy generation system in accordance with the invention.
- a tidal flow energy generation arrangement The tidal flow energy generation arrangement lis required to be operated in extreme conditions. To be commercially competitive with other forms of power production areas of the seabed of high tidal flow energy concentration need to be utilised. These areas are difficult and dangerous to work in and the structure and its installation and retrieval need to take into account significant environmental hazards.
- the current flow for example, is fast, typically upward of 4 Knots. Areas are often in deep water, which may be deeper than those in which a piling rig can operate. Storm conditions can cause costly delays and postponement. Tidal reversal is twice a day and the time between tidal reversal may be very short (for example between 15 and 90 minutes).
- the arrangement 1 comprises a freestanding structural frame assembly comprising steel tubes 2 (circa 1.5 m diameter).
- the frame assembly comprises welded tubular steel corner modules 3.
- the corner units are interconnected by lengths of the steel tubes 2.
- the structure as shown in the drawings is triangular in footprint and this may for certain deployment scenarios be preferred however other shape footprints (such as rectangular) are also envisaged in such arrangements the angular configuration of the corner modules 3 will of course be different to that shown and described in relation to the drawings.
- the corner modules 3 comprise first and second angled limbs 7, 8 extending at an angle of 60 degrees to one another.
- the angled tube limb 7 is welded onto the outer cylindrical wall of limb 8.
- Angled tube limbs 7 and 8 are fixed to a respective nacelle tower 9.
- the corner module 3 and interconnecting tubes 2 include respective flanges 4 for bolting to one another.
- the tube limb 8 of the corner modules include a flap valve comprising a hinged flap closing an aperture in a baffle plate welded internally of the end of tube limb 8. Water can flood into and flow out of the tube limb 8 (and therefore into the tubes 2) via the flap valve. Once flooded and in position on the seabed, the flap valve tends to close the end of the tube limb 8 preventing silting up internally of the tubular structure.
- the corner modules 3 also include a structural steel plate (not shown) welded between the angled tubular limbs 7, 8.
- a lifting eye structure is welded to the steel plate.
- An end of a respective chain 14 of a chain lifting bridle arrangement is fixed to the lifting eye.
- a respective lifting chain 14 is attached at each node module 3, the distal ends meeting at a bridle top link.
- Self levelling feet 15 maybe provided fore each of the corner modules 3. This ensures a level positioning of the structure on uneven scoured seabed and transfer of vertical loadings directly to the seabed.
- the structure is held in position by its own mass and lack of buoyancy due to flooding of the tubes 2 and end modules 3.
- the tubes 2 are positioned in the boundary layer close to the seabed and the structure has a large base area relative to height. This minimises potential overturning moment. Horizontal drag is minimised due to using a single large diameter tubes 2 as the main interconnecting support for the frame.
- the structure forms a mounting base for the turbine generators 19 mounted at each corner module 3, the support shaft 20 of a respective turbine generator 19 being received within the respective mounting tube 3 such that the turbine generators can rotate about the longitudinal axis of the respective support shaft 20. Power is transmitted from the corner mounted turbine generators 19 to onshore by means of appropriate cable as is well known in the marine renewables industry.
- the structure is designed to be installed and removed entirely from surface vessels.
- the structure is designed to be installed onto a previously surveyed site in the time interval that represents slack water between the ebb and flood of the tide. This time may vary from 15 to 90 minutes. It has been found that the influence of variations in flow occurring at higher frequencies than the tidal change frequency can have a significant effect. Particularly turbulent flows and flows resulting from wave characteristics can have significant pressure pulse stress loading impact on the structure and the turbine generators 19. Unsteady pressure pulse loading as a result of these effects can cause fatigue in the components of the system which has the potential, if not ameliorated to significantly reduce the operational life of the system. Furthermore if flow velocities vary in an abrupt manner, this can cause the instantaneous turbine operation lead to a stall event.
- the generation system comprises a triangular structural support frame assembly 102 which is mounted on the sea bed. Respective turbine generators 119 are mounted at each apex of the triangular frame 102.
- Flow determination devices 160a 160b 160c 160d are mounted at strategic positions spaced from the turbine generators 119 and arranged to monitor the flow characteristics (for example one or more of waveform amplitude, pressure, velocity) on course to impact upon the seabed mounted structure and the turbine generators 119.
- Output from the flow determination devices 160a 160b 160c 160d is directed to the controller 150 which first determines whether the flow variations are significant enough to warrant adjustment of operation of the turbine generators 119.
- the controller calculates the required adjustment to the operation of the turbine generators 119.
- the adjustment is determined to as nearly as possible ensure that the effect of the pressure pulse created loading that is predicted to shortly impact upon one or each of the turbine generators 119 is compensated for, by appropriate variation in operation of the turbine generators (typically by controlling the speed of rotation of the turbine or the load drawn).
- the effect of fatigue inducing stresses can be neutralised by ascertaining the predicted loading that will shortly be impacting on the turbine generator and by knowing the distance and speed of approach of the anomalous flow effect the time at which the generator operation needs to be varied can be derived by the controller 150 (and also the degree of variation in the operating parameters that is necessary).
- the output power or load of the turbine generator can be varied (lowered in the case of compensation for incoming increased pressure pulse or wave).
- the blade pitch may be varied.
- the system may be operated such that, in the event of the controller 150 operating to vary operation of one of the turbine generators 119 in response to the output of the flow determination devices 160a 160b 160c 160d, the controller 150 operates to vary operation another of the turbine generators 119 in a compensatory manner. This provides that the overall output of the system can be maintained at a constant level (or nearer constant than would otherwise be the case if the compensatory variation of turbine operation was not put into effect).
- the flow determination devices 160a 160b 160c 160d can be sonar or other flow measurement devices. Particularly suitable for use are Acoustic Doppler Current Profiler (ADCP) devices.
- ADCP Acoustic Doppler Current Profiler
- the ADCP devices 160a 160b 160c 160d are located a spaced distance away from the turbine generators 119 and directed upwardly to obtain a velocity profile of a water column at that location. It is beneficially to measure the velocity profile at a sufficient distance (typically ten of metres) away from the turbine generators in order for the turbine generators to have sufficient time to respond to the adjustment control signal from the controller 150.
- the embodiment of figure 3 is generally similar to the embodiment of figure 2.
- the generation system comprises a triangular structural support frame assembly 202 which is mounted on the sea bed.
- Respective turbine generators 219 are mounted at each apex of the triangular frame 202.
- the flow determination devices 260a 260b 260c are mounted on the turbine generators 219 and arranged to momtor the flow characteristics at a fixed distance and in a specific direction (see the measurement cones in figure 3) on course to impact upon the seabed mounted structure and the turbine generators 219.
- Output from the flow determination devices 260a 260b 260c is directed to the controller 250 which first determines whether the flow variations are significant enough to warrant adjustment of operation of the turbine generators 219.
- the flow determination devices can be positioned most appropriately for the prevailing flow directions for the relevant tidal flows.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Power Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10795753A EP2507507A2 (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
CA2782388A CA2782388A1 (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
US13/512,370 US20130015659A1 (en) | 2009-12-03 | 2010-11-30 | Tidal Turbine System |
CN2010800540090A CN102725517A (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
NZ600043A NZ600043A (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
GB1209421.5A GB2490808B (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0921207.7A GB0921207D0 (en) | 2009-12-03 | 2009-12-03 | Tidal turbine system |
GB0921207.7 | 2009-12-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011067586A2 true WO2011067586A2 (en) | 2011-06-09 |
WO2011067586A3 WO2011067586A3 (en) | 2011-11-24 |
Family
ID=41641885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2010/051989 WO2011067586A2 (en) | 2009-12-03 | 2010-11-30 | Tidal turbine system |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130015659A1 (en) |
EP (1) | EP2507507A2 (en) |
KR (1) | KR20120115493A (en) |
CN (1) | CN102725517A (en) |
CA (1) | CA2782388A1 (en) |
GB (2) | GB0921207D0 (en) |
NZ (1) | NZ600043A (en) |
WO (1) | WO2011067586A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2521631B (en) * | 2013-12-23 | 2017-10-11 | Tidal Generation Ltd | Water current power generation systems |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2532585B (en) * | 2013-06-30 | 2018-04-25 | Wind Farm Analytics Ltd | Turbine fluid velocity field measurement |
JP6366520B2 (en) * | 2015-02-02 | 2018-08-01 | 日立Geニュークリア・エナジー株式会社 | Output fluctuation monitoring apparatus and method |
WO2016203557A1 (en) * | 2015-06-17 | 2016-12-22 | 株式会社日立製作所 | Wind power generation device |
US11560872B2 (en) | 2021-06-18 | 2023-01-24 | Blue Shark Energy LLC | Hydrokinetic telescopic turbine device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030231951A1 (en) | 1999-01-06 | 2003-12-18 | Finn Kaare | Turbine driven with a fluid medium |
US20060232072A1 (en) | 2002-09-20 | 2006-10-19 | Manchester Jonathan R | Apparatus for generating electrical power from tidal water movement |
US20090087301A1 (en) | 2007-09-28 | 2009-04-02 | Krouse Wayne F | Machine for increased hydro power generation |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6726439B2 (en) * | 2001-08-22 | 2004-04-27 | Clipper Windpower Technology, Inc. | Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits |
US7116005B2 (en) * | 2005-02-16 | 2006-10-03 | Corcoran Iii James John | Tidal/wave flow electrical power generation system |
DE102005045516A1 (en) * | 2005-09-22 | 2007-03-29 | Daubner & Stommel GbR Bau-Werk-Planung (vertretungsberechtigter Gesellschafter: Matthias Stommel, 27777 Ganderkesee) | Method for adapting a wind turbine to given wind conditions |
CN100363613C (en) * | 2005-10-28 | 2008-01-23 | 张雪明 | Adaptive ocean current generator |
WO2007100639A2 (en) * | 2006-02-28 | 2007-09-07 | Kuehnle Manfred R | Submersible turbine apparatus |
CN100432425C (en) * | 2006-12-06 | 2008-11-12 | 天津大学 | Automatically-adjustable power generation device from sea current |
US7950901B2 (en) * | 2007-08-13 | 2011-05-31 | General Electric Company | System and method for loads reduction in a horizontal-axis wind turbine using upwind information |
CN101932824B (en) * | 2007-11-23 | 2013-06-05 | 亚特兰蒂斯能源有限公司 | Control system for extracting power from water flow |
US8025476B2 (en) * | 2009-09-30 | 2011-09-27 | General Electric Company | System and methods for controlling a wind turbine |
-
2009
- 2009-12-03 GB GBGB0921207.7A patent/GB0921207D0/en not_active Ceased
-
2010
- 2010-11-30 EP EP10795753A patent/EP2507507A2/en not_active Withdrawn
- 2010-11-30 NZ NZ600043A patent/NZ600043A/en not_active IP Right Cessation
- 2010-11-30 US US13/512,370 patent/US20130015659A1/en not_active Abandoned
- 2010-11-30 CA CA2782388A patent/CA2782388A1/en not_active Abandoned
- 2010-11-30 WO PCT/GB2010/051989 patent/WO2011067586A2/en active Application Filing
- 2010-11-30 CN CN2010800540090A patent/CN102725517A/en active Pending
- 2010-11-30 KR KR1020127014571A patent/KR20120115493A/en not_active Application Discontinuation
- 2010-11-30 GB GB1209421.5A patent/GB2490808B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030231951A1 (en) | 1999-01-06 | 2003-12-18 | Finn Kaare | Turbine driven with a fluid medium |
US20060232072A1 (en) | 2002-09-20 | 2006-10-19 | Manchester Jonathan R | Apparatus for generating electrical power from tidal water movement |
US20090087301A1 (en) | 2007-09-28 | 2009-04-02 | Krouse Wayne F | Machine for increased hydro power generation |
Non-Patent Citations (1)
Title |
---|
See also references of EP2507507A2 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2521631B (en) * | 2013-12-23 | 2017-10-11 | Tidal Generation Ltd | Water current power generation systems |
US10767620B2 (en) | 2013-12-23 | 2020-09-08 | Ge Energy (Uk) Limited | Water current power generation systems |
Also Published As
Publication number | Publication date |
---|---|
CN102725517A (en) | 2012-10-10 |
CA2782388A1 (en) | 2011-06-09 |
KR20120115493A (en) | 2012-10-18 |
GB2490808A (en) | 2012-11-14 |
GB2490808B (en) | 2016-09-28 |
GB0921207D0 (en) | 2010-01-20 |
GB201209421D0 (en) | 2012-07-11 |
US20130015659A1 (en) | 2013-01-17 |
NZ600043A (en) | 2014-09-26 |
WO2011067586A3 (en) | 2011-11-24 |
EP2507507A2 (en) | 2012-10-10 |
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