DK2140134T3 - Bølgekraftværk - Google Patents

Bølgekraftværk

Info

Publication number
DK2140134T3
DK2140134T3 DK08723986.9T DK08723986T DK2140134T3 DK 2140134 T3 DK2140134 T3 DK 2140134T3 DK 08723986 T DK08723986 T DK 08723986T DK 2140134 T3 DK2140134 T3 DK 2140134T3
Authority
DK
Denmark
Prior art keywords
power plant
wave power
wave
plant
power
Prior art date
Application number
DK08723986.9T
Other languages
English (en)
Inventor
Julius Espedahl
Original Assignee
Langlee Wave Power As
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 Langlee Wave Power As filed Critical Langlee Wave Power As
Application granted granted Critical
Publication of DK2140134T3 publication Critical patent/DK2140134T3/da

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/14Adaptations 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 wave energy
    • F03B13/16Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1805Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
    • F03B13/181Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
    • F03B13/182Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with a to-and-fro movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/14Adaptations 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 wave energy
    • F03B13/16Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18Adaptations 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 wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/14Adaptations 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 wave energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00Other machines or engines
    • F03B17/06Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/10Stators
    • F05B2240/12Fluid guiding means, e.g. vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/91Mounting on supporting structures or systems on a stationary structure
    • F05B2240/911Mounting on supporting structures or systems on a stationary structure already existing for a prior purpose
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/97Mounting on supporting structures or systems on a submerged structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/40Transmission of power
    • F05B2260/406Transmission of power through hydraulic systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy 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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
DK08723986.9T 2007-03-14 2008-03-13 Bølgekraftværk DK2140134T3 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO20071393 2007-03-14
NO20072511 2007-05-16
NO20074725 2007-09-17
PCT/NO2008/000095 WO2008111849A1 (en) 2007-03-14 2008-03-13 Wave power plant

Publications (1)

Publication Number Publication Date
DK2140134T3 true DK2140134T3 (da) 2014-09-08

Family

ID=39759722

Family Applications (1)

Application Number Title Priority Date Filing Date
DK08723986.9T DK2140134T3 (da) 2007-03-14 2008-03-13 Bølgekraftværk

Country Status (9)

Country Link
US (1) US8277146B2 (da)
EP (1) EP2140134B1 (da)
JP (1) JP5331982B2 (da)
KR (1) KR20100015561A (da)
CN (1) CN101680419B (da)
DK (1) DK2140134T3 (da)
ES (1) ES2496168T3 (da)
PT (1) PT2140134E (da)
WO (1) WO2008111849A1 (da)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0900982D0 (en) * 2009-01-22 2009-03-04 Green Ocean Energy Ltd Method and apparatus for energy generation
DE102009035928A1 (de) * 2009-05-26 2010-12-02 Robert Bosch Gmbh Energiewandlungseinrichtung zur Umwandlung von Wellenenergie
EP2284387A3 (en) * 2009-08-10 2013-02-27 Matthew Charles Gartner Oscillating energy capture mechanism
GB2472625B (en) * 2009-08-13 2016-06-29 Univ Of Lancaster Wave energy device
NO330942B1 (no) 2009-12-09 2011-08-22 Aker Engineering & Technology Innretning for utvinning av energi fra bolger
AU2011227345A1 (en) 2010-03-18 2012-11-01 Resolute Marine Energy, Inc. Wave-energy converter
US20110298215A1 (en) * 2010-06-04 2011-12-08 Hein Wille Near shore wec system
EP2606223B1 (en) * 2010-08-18 2020-07-22 AW-Energy Oy Arrangement for a surface area adjustment of a reciprocating wing system in a wave energy recovery system
EP2630365A1 (en) 2010-10-21 2013-08-28 Arthur Robert Williams Full-water-column surge-type wave-energy converter
WO2012053899A1 (en) * 2010-10-21 2012-04-26 Langlee Wave Power As Wave power device with generator
KR101296859B1 (ko) * 2011-03-18 2013-08-14 주식회사 로보멕 능동형 방파제를 이용한 파력 발전 시스템
ES2458217T3 (es) * 2011-07-13 2014-04-30 Floating Power Plant A/S Elemento de captación de energía undimotriz
WO2013029012A1 (en) * 2011-08-25 2013-02-28 Resolute Marine Energy, Inc. Optimized control of multiple-pto wave-energy converters
US9127640B2 (en) 2011-09-02 2015-09-08 Rohrer Technologies, Inc. Multi-capture mode wave energy converter with submergible float
US9863395B2 (en) 2012-05-08 2018-01-09 Rohrer Technologies, Inc. Wave energy converter with concurrent multi-directional energy absorption
JP2014058911A (ja) * 2012-09-18 2014-04-03 Okinawa Institute Of Science And Technology Graduate Univ 水流発電装置
NL2009951C2 (nl) * 2012-12-10 2014-06-11 Ardavan Shafiie Inrichting voor het opwekken van energie op basis van golfslag.
US9309861B1 (en) 2013-04-17 2016-04-12 Roy D. Gaul Ocean wave kinetic energy conversion method and system
WO2015042346A1 (en) * 2013-09-20 2015-03-26 Bein Thomas W Ocean wave energy absorbing kite system and method
CN103832557A (zh) * 2014-03-24 2014-06-04 长沙理工大学 一种漂浮式波浪能-风能综合利用平台
CN104335964A (zh) * 2014-10-09 2015-02-11 长沙理工大学 一种利用重力摆的漂浮式波浪能供氧装置
WO2017064359A1 (en) * 2015-10-15 2017-04-20 Aw-Energy Oy Flow control arrangement in a wave energy recovery apparatus
JP6968366B2 (ja) * 2018-01-25 2021-11-17 横浜ゴム株式会社 波受板及び波力発電システム
CN108266307B (zh) * 2018-02-28 2023-05-23 华南理工大学 一种宽度可调的浮力摆式波浪发电装置
US11851143B2 (en) * 2021-01-14 2023-12-26 Atargis Energy Corporation Mooring structure for ocean wave energy converters
US11795905B1 (en) 2023-07-19 2023-10-24 Poseidon's Kite LLC Ocean wave energy absorbing panel

Family Cites Families (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1476613A (en) * 1921-08-26 1923-12-04 Hodel Adolf Chimney cap
US1746613A (en) 1927-11-08 1930-02-11 Chester E Shuler Wave motor
US1960622A (en) * 1933-02-28 1934-05-29 Pont Anthony W Du Wave power plant
US3928967A (en) * 1973-11-15 1975-12-30 Stephen Hugh Salter Apparatus and method for extracting wave energy
US4034231A (en) * 1975-04-28 1977-07-05 Conn J L Ocean tide and wave energy converter
GB1571283A (en) * 1976-03-31 1980-07-09 Wavepower Ltd Apparatus for extracting energy from movement of water
US4075382A (en) * 1976-05-27 1978-02-21 The Procter & Gamble Company Disposable nonwoven surgical towel and method of making it
US4170738A (en) * 1977-12-19 1979-10-09 Q Corporation Energy device powered by the motion of water beneath waves
SE7808856L (sv) * 1978-08-22 1980-02-23 Salen Energy Ab Havsvagskraftverk
ZA793910B (en) * 1979-07-13 1980-07-30 Q Corp Energy device powered by the motion of water beneath waves
JPS56124680A (en) * 1980-03-05 1981-09-30 Muroran Kogyo Daigaku Wave force absorbing apparatus
JPS5781168A (en) 1980-11-07 1982-05-21 Nippon Kokan Kk <Nkk> Wave energy absorber
GB2119449A (en) * 1982-04-01 1983-11-16 Edward Victor Byers Abstracting energy from water subject to wave motion
JPS58178879A (ja) * 1982-04-14 1983-10-19 Muroran Kogyo Daigaku 波力発電方法及び装置
JPS5943987A (ja) * 1982-09-03 1984-03-12 Hitachi Zosen Corp 波力エネルギ−吸収装置
US4552514A (en) * 1983-07-20 1985-11-12 Williams, Inc. Wave driven work extracting device
US4552512A (en) * 1983-08-22 1985-11-12 Permutare Corporation Standby water-powered basement sump pump
JPS6158977A (ja) * 1984-08-30 1986-03-26 Muroran Kogyo Daigaku 波力発電方法と装置
CN86104768A (zh) * 1986-07-13 1988-10-05 徐西震 海洋波动能接收机
GB2196699A (en) * 1986-10-27 1988-05-05 John Kenneth Nuckley Wind or water powered rotor
GB2211896A (en) 1987-10-31 1989-07-12 Timothy William Bazeley Wave power device
US4843249A (en) * 1988-08-09 1989-06-27 Bussiere Jean L Hydroelectric system
GB9110274D0 (en) 1991-05-11 1991-07-03 Mann David F Wave energy oscillator
IT1286351B1 (it) 1996-10-21 1998-07-08 Mario Lombardo Generatore elettrico marino a paratoia oscillante e pompa a pistone
WO2002077447A1 (en) 2001-03-22 2002-10-03 Y.T. Enterprises Ltd. Wave power generation machine
US6568878B2 (en) * 2001-10-15 2003-05-27 The United States Of America As Represented By The Secretary Of The Navy Wave energy dissipater and beach renourishing system
FI20012086A0 (fi) * 2001-10-26 2001-10-26 Top Shark Oy Menetelmä ja laitteisto aaltoenergian hyödyntämiseksi
AU2003256485A1 (en) * 2002-07-11 2004-02-02 Yu-Si Fok Wave energy conversion device for desalination, etc.
FI113685B (fi) * 2003-04-25 2004-05-31 Aw Energy Oy Tuotantolaitteisto
FR2858667B1 (fr) 2003-08-04 2006-09-08 Claude Rene Frot Dispositif pour transformer l'energie de la houle en energie mecanique
NZ546825A (en) * 2003-10-21 2009-04-30 Wave Ltd C Floating breakwater with half wavelength spacing for energy absorbtion
EP1774170A1 (en) * 2004-02-24 2007-04-18 Y.T. Enterprises Limited Wave power plant
GB0408939D0 (en) * 2004-04-22 2004-05-26 Weir Strachan & Henshaw Water current turbine
NZ534415A (en) * 2004-07-29 2005-11-25 Ronald Murloe Winsloe Modular near-shore wave-powered energy collection system
EP1779702B1 (en) 2004-08-11 2012-09-26 Interdigital Technology Corporation Channel sounding for improved system performance
GB0505906D0 (en) * 2005-03-23 2005-04-27 Aquamarine Power Ltd Apparatus and control system for generating power from wave energy
NZ565554A (en) * 2005-08-12 2010-11-26 Biopower Systems Pty Ltd A wave energy capturing device having a buoyant paddle with an array of spaced apart blades and an energy transfer mechanism attached to the paddle to be driven by the oscillation of the paddle
US20090217657A1 (en) * 2005-12-23 2009-09-03 Christopher Anthony Budd Wave Energy Extraction Device
ZA200603170B (en) 2006-04-20 2007-09-26 Wave Ltd C Floating breakwater and propulsion system
FI20060408L (fi) 2006-04-28 2007-10-29 Aw Energy Oy Aaltoenergian talteenottolaite
EP2013472A2 (en) * 2006-05-04 2009-01-14 Daniel Farb Return and limited motion in energy capture devices
KR20060094536A (ko) 2006-05-22 2006-08-29 씨-웨이브 리미티드 플로팅 방파제 및 추진 시스템
CA2656138A1 (en) * 2006-06-27 2008-01-03 Daniel Farb Benkatina hydroelectric turbine
FI119791B (fi) 2007-02-15 2009-03-13 Aw Energy Oy Lineaarigeneraattori
GB0717202D0 (en) 2007-09-05 2007-10-17 Wave Ltd C Wave energy extraction apparatus
GB0719484D0 (en) * 2007-10-05 2007-11-14 Aquamarine Power Ltd Underwater foundation
ITFI20080038U1 (it) 2008-06-30 2009-12-30 Chimia Renato La Supporto stabilizzante per stampella e/o bastone da passeggio.

Also Published As

Publication number Publication date
CN101680419A (zh) 2010-03-24
US8277146B2 (en) 2012-10-02
JP5331982B2 (ja) 2013-10-30
JP2010521613A (ja) 2010-06-24
ES2496168T3 (es) 2014-09-18
US20100111609A1 (en) 2010-05-06
WO2008111849A1 (en) 2008-09-18
EP2140134B1 (en) 2014-06-11
EP2140134A4 (en) 2013-03-20
CN101680419B (zh) 2012-09-05
KR20100015561A (ko) 2010-02-12
PT2140134E (pt) 2014-09-10
EP2140134A1 (en) 2010-01-06

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