WO2011091448A3 - Method of counteracting the tendency of a tethered electricity water current-driven turbine to dive when power is produced - Google Patents

Method of counteracting the tendency of a tethered electricity water current-driven turbine to dive when power is produced Download PDF

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Publication number
WO2011091448A3
WO2011091448A3 PCT/ZA2011/000004 ZA2011000004W WO2011091448A3 WO 2011091448 A3 WO2011091448 A3 WO 2011091448A3 ZA 2011000004 W ZA2011000004 W ZA 2011000004W WO 2011091448 A3 WO2011091448 A3 WO 2011091448A3
Authority
WO
WIPO (PCT)
Prior art keywords
dive
tendency
tethered
power
counteracting
Prior art date
Application number
PCT/ZA2011/000004
Other languages
French (fr)
Other versions
WO2011091448A2 (en
Inventor
Stephen Gavin John Oldfield
Original Assignee
Stephen Gavin John Oldfield
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stephen Gavin John Oldfield filed Critical Stephen Gavin John Oldfield
Publication of WO2011091448A2 publication Critical patent/WO2011091448A2/en
Publication of WO2011091448A3 publication Critical patent/WO2011091448A3/en

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
    • 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"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • 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
    • F03B15/00—Controlling
    • F03B15/02—Controlling by varying liquid flow
    • F03B15/04—Controlling by varying liquid flow of turbines
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

A method is described of controlling a tethered, underwater current driven turbine, power-generating device. The use of a wing to both offset the torque of the generators, and to control the tendency of the tethered device to dive when the generators produce power. Use in made of a tether (122,123) to the ocean floor to measure the tension on it so as to apply the appropriate wing flap angle. The turbine includes variable-pitch rotor blades (109,110). The pitch of the variable-pitch rotor blades (109,110) on the turbine in combination with the load on the anchor weight is adjusted such that the whole device does not create any slack on the tether cable (122,123) thereby counteracting the tendency of the device to dive.
PCT/ZA2011/000004 2010-01-22 2011-01-21 Method of counteracting the tendency of a tethered electricity water current-driven turbine to dive when power is produced WO2011091448A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2010/0512 2010-01-22
ZA201000512 2010-01-22

Publications (2)

Publication Number Publication Date
WO2011091448A2 WO2011091448A2 (en) 2011-07-28
WO2011091448A3 true WO2011091448A3 (en) 2011-11-24

Family

ID=44307670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2011/000004 WO2011091448A2 (en) 2010-01-22 2011-01-21 Method of counteracting the tendency of a tethered electricity water current-driven turbine to dive when power is produced

Country Status (1)

Country Link
WO (1) WO2011091448A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2490737B (en) 2011-05-13 2013-04-10 Sustainable Marine Technologies Ltd A modular turbine assembly
JP2013217333A (en) * 2012-04-11 2013-10-24 Ihi Corp Ocean current power generating equipment
GB2509353B (en) * 2012-05-14 2015-11-11 Sustainable Marine Energy Ltd A flowing-water drivable turbine assembly
KR102033814B1 (en) * 2013-02-04 2019-11-08 미네스토 에이비 Power plant comprising a structure and a vehicle
BR112015026524A2 (en) * 2013-04-22 2017-07-25 Ihi Corp subsea device and method for controlling the posture of the subsea device
CL2013001238A1 (en) * 2013-05-03 2013-08-16 Pavez Vasquez Claudio Marcelo Submersible fixing and support device for electrical generation equipment, consisting of a sealed capsule inside which allows the installation of control equipment, generator motor and electric board, the capsule joins a rigid floating structure formed by buoyant tubular structures that have waterproof and compressed air sealed cameras, valves and a communication system.
JP6223552B2 (en) * 2013-05-30 2017-11-01 ミネスト・アーベー Underwater power plant with multiple turbines
US9709026B2 (en) * 2013-12-31 2017-07-18 X Development Llc Airfoil for a flying wind turbine
US10167842B2 (en) 2014-08-29 2019-01-01 Minesto Ab Method for controlling the operation of a submersible power plant
KR101599708B1 (en) * 2015-03-18 2016-03-04 이동인 Submersible platform for generating electricity
JP6627292B2 (en) * 2015-07-10 2020-01-08 株式会社Ihi Attitude control system and attitude control method for floating type underwater power generator
JP6821920B2 (en) * 2016-02-22 2021-01-27 株式会社Ihi Underwater floating device and depth control method
GB201610990D0 (en) * 2016-06-23 2016-08-10 Tidalstream Ltd Improvements in or relating to underwater turbines
JP6926932B2 (en) * 2017-10-18 2021-08-25 株式会社Ihi Attitude control system for hydroelectric power generators
JP2020084813A (en) * 2018-11-19 2020-06-04 株式会社日立製作所 Floating type offshore wind power generation system
CN110318932A (en) * 2019-06-05 2019-10-11 中国航天空气动力技术研究院 A kind of multi-wall interference for underwater power generation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501696A (en) * 1946-01-12 1950-03-28 Wolfgang Kmentt Stream turbine
WO2000042318A1 (en) * 1999-01-12 2000-07-20 Dehlsen Associates, Inc. A method of controlling operating depth of a device
WO2009004420A2 (en) * 2007-06-29 2009-01-08 Aquantis, L.L.C. Multi-point tethering and stability system and control method for underwater current turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501696A (en) * 1946-01-12 1950-03-28 Wolfgang Kmentt Stream turbine
WO2000042318A1 (en) * 1999-01-12 2000-07-20 Dehlsen Associates, Inc. A method of controlling operating depth of a device
WO2009004420A2 (en) * 2007-06-29 2009-01-08 Aquantis, L.L.C. Multi-point tethering and stability system and control method for underwater current turbine

Also Published As

Publication number Publication date
WO2011091448A2 (en) 2011-07-28

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