WO2012169898A1 - Centrale houlomotrice comportant un mécanisme de régulation de flottabilité - Google Patents

Centrale houlomotrice comportant un mécanisme de régulation de flottabilité Download PDF

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Publication number
WO2012169898A1
WO2012169898A1 PCT/NO2012/000041 NO2012000041W WO2012169898A1 WO 2012169898 A1 WO2012169898 A1 WO 2012169898A1 NO 2012000041 W NO2012000041 W NO 2012000041W WO 2012169898 A1 WO2012169898 A1 WO 2012169898A1
Authority
WO
WIPO (PCT)
Prior art keywords
buoyancy
floating unit
power plant
wave power
cable
Prior art date
Application number
PCT/NO2012/000041
Other languages
English (en)
Inventor
Hans Åge ØVRETVEIT
Original Assignee
Oevretveit Hans Aage
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 Oevretveit Hans Aage filed Critical Oevretveit Hans Aage
Priority to EP12797204.0A priority Critical patent/EP2718560A4/fr
Publication of WO2012169898A1 publication Critical patent/WO2012169898A1/fr

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
    • F03B13/14—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 wave energy
    • F03B13/16—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 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"
    • F03B13/18—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 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
    • F03B13/1885—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 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 tied to the rem
    • 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

  • Wave power plant comprising buoyancy regulating arrangement
  • the present invention relates to a new construction for a wave power plant comprising a floating unit that floats in or near the water surface, where the floating unit
  • a drive means connected to a power generator for the generation of electrical energy from the influence of wave movements in the water, from where a cable runs from an anchoring point on the sea bed and up and around a driveshaft of the drive means, as linear movement of the cable is converted to a torque in the drive means .
  • the object of the invention is to provide a power plant where the floating or buoyancy ability of the floating parts of the plant can be regulated to increase the active operating period of the plant even when too small or too large waves influence the plant.
  • Units are connected where the buoyancy volume can be varied .
  • the floating units of the plant are consequently formed with buoyancy units with fixed volumes and units where the volume can be varied. This means that the units with a variable volume can be fastened to the floating unit with a fixed volume.
  • the plant according to the invention can, in addition to the fixed float unit described above, comprise an
  • the construction can comprise a ballast tank system to be able to control the regulation of net buoyancy by filling/emptying the tanks according to the total power load on the wave power plant .
  • the plant can comprise an electronic/ electromechanical system that monitors the power load on the power production unit in relation to available force from the ocean waves that influences the floating unit, i.e. as a function of wave height and wave velocity.
  • the system will regulate net buoyancy in the form of power availability for the energy producing unit of the wave power plant by varying the buoyancy force to the units with varying buoyancy volume or the level in the ballast tanks for the purpose of:
  • the wave power plant according to the invention is a wave power plant.
  • the cable is connected to a buoyancy device arranged down in the water and where the buoyancy of the buoyancy device is arranged to be regulated whereby the buoyancy force that influences the drive means is arranged to be regulated by the control of the buoyancy of the floating unit and/or the buoyancy of the buoyancy device.
  • the equipment for the floating unit to vary the buoyancy can comprise a mechanical-electrical control system which is arranged to increase or reduce the buoyancy volume of the floating unit according to the available wave energy.
  • the equipment to vary the buoyancy can comprise a ballast system, where the amount of water in the floating unit is arranged to be regulated.
  • the equipment to vary the buoyancy can alternatively comprise an aeration system where the amount of air in the floating unit is arranged to be regulated.
  • the equipment to vary the buoyancy of the buoyancy device can comprise an aeration system connected to the control unit via an air hose, where the aeration system is arranged to supply or evacuate air from the buoyancy device.
  • the buoyancy device associated with the floating unit can comprise one or more permanently mounted tanks, the floating ability of which is arranged to be lowered by the filling of water and the floating ability is increased in that the water is replaced by air.
  • the floating unit can comprise a number of permanently mounted air-filled tanks, which are ballasted in that air is replaced by water and vice-versa.
  • the floating unit can also comprise one or more collapsible bodies, such as balloons, which are inflated by air to generate buoyancy and where the air is released again when the buoyancy shall be reduced.
  • a first part of the cable can be connected to the
  • anchorage point on the sea bed and a second part of the cable can run from the drive means and down into the water and around a block disc and to the buoyancy device where the block disc is anchored to said anchorage point on the sea bed.
  • the block disc can be arranged in the cable with the help of a cable connection.
  • the wave energy is a function of f (wave height, wave length and time between two wave tops) .
  • Figure 1 shows a principle diagram of a wave power plant according to the invention.
  • the present wave power plant comprises a floating unit 10 that floats in or near the water surface, at least sufficiently near the surface for the floating unit to be influenced by wave movements.
  • the floating unit can be produced from any material that provides sufficient buoyancy.
  • the floating unit 10 is formed as an internally hollow body where a drive means 12 is arranged and connected to a power generator 14.
  • the drive means 12 is preferably of a rotationally driven type and is connected to an anchorage point 18 on the sea bed via a drive shaft 22 and a cable 16.
  • the drive shaft 22 will rotate which in turn leads to power being generated in the power generator 14.
  • the power that is generated can be stored or sent on to a power distribution net, for example, where many wave power plants according to the invention are connected to each other and make up a system where the collected power is transmitted on to be used further.
  • the floating unit can comprise a number of ballast tanks 34 arranged internally in the floating undt 10, or
  • ballast tanks can, with the help of a control unit 30, be filled and emptied of water and air so that the buoyancy of the floating unit can be regulated and thereby the buoyancy force which influences the drive means 12.
  • the ballast tanks are preferably connected to the control unit via lines 34a.
  • the floating unit 10 can also comprise a number of air-filled bodies in the form of, for example, balloons 36 which are arranged
  • the balloons 36 will contribute to the buoyancy of the floating units being regulated and thereby also the buoyancy force that influences the drive means 12.
  • the balloons 36 manufactured from a plastic material, for example, are connected to an aeration system to control the volume and buoyancy of the balloon.
  • Said aeration system can be placed in the control system 30 and can comprise an air compressor, an air accumulation tank, valves (for example, slide valves) for the supply of air and an electronic control device.
  • the same aeration system can also be used for the regulation of the ballast tanks 34.
  • the balloons 36 are preferably connected to the control unit via lines 36a.
  • the aim of the control system 30 and the aeration system is to regulate the force influence, i.e. the buoyancy, maximally or optimally dependent on wave height and the desired power usage.
  • the floating unit 10 is
  • buoyancy device 24 placed down in the water, where the buoyancy device 24 is arranged to
  • a first part 16a of the cable 16 is connected to the anchorage point 18 on the sea bed.
  • a second part 16b of the cable 16 runs from the drive means 12 and down into the water and around a block disc 26 or pulley, and up again to the buoyancy device 24, where the block disc 26 is anchored to said anchorage point 18 on the sea bed.
  • the buoyancy device 24 in the water will thereby contribute to extra force being supplied to the drive means, in particular when the floating unit 10 sinks in the waves.
  • the wave power plant will, in this way, be able to generate maximum power independently of the floating unit being raised or lowered in the waves.
  • the buoyancy device 24 can have a fixed buoyancy volume. To influence and regulate the buoyancy of the buoyancy device 24, this can be equipped with one or more air- filled bodies such as balloons 38.
  • the balloon (s) 38 can be connected to the control unit 30 via a line or air hose 28 and is controlled as described in connection with the balloons 36 on the floating unit 10.

Abstract

La présente invention concerne une centrale houlomotrice comportant une unité flottante (10) qui flotte dans l'eau ou à proximité de la surface de l'eau (20), l'unité flottante comportant un moyen d'entraînement (12) connecté à un générateur d'énergie électrique (14) pour la génération d'énergie électrique à partir de l'influence des mouvements ondulatoires dans l'eau, dans lequel un câble (16) s'étend depuis un point d'ancrage (18) sur le fond marin vers le haut et autour d'un arbre d'entraînement (22) du moyen d'entraînement (12), lorsque le mouvement linéaire du câble (16) est converti en un couple dans le moyen d'entraînement (12). L'unité flottante (10) comporte un équipement pour faire varier sa flottabilité en fonction de la hauteur des vagues, et le câble (16) est connecté à un dispositif de flottabilité (24) disposé plus bas dans l'eau, et la flottabilité du dispositif de flottabilité (24) est adaptée pour être contrôlée, permettant ainsi la régulation de la force de flottabilité qui influence le moyen d'entraînement (12) par la commande de flottabilité de l'unité flottante (10) et/ou la flottabilité du dispositif de flottabilité (24).
PCT/NO2012/000041 2011-06-06 2012-05-29 Centrale houlomotrice comportant un mécanisme de régulation de flottabilité WO2012169898A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12797204.0A EP2718560A4 (fr) 2011-06-06 2012-05-29 Centrale houlomotrice comportant un mécanisme de régulation de flottabilité

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20110813A NO332536B1 (no) 2011-06-06 2011-06-06 Bolgekraftverk
NO20110813 2011-06-06

Publications (1)

Publication Number Publication Date
WO2012169898A1 true WO2012169898A1 (fr) 2012-12-13

Family

ID=47074914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2012/000041 WO2012169898A1 (fr) 2011-06-06 2012-05-29 Centrale houlomotrice comportant un mécanisme de régulation de flottabilité

Country Status (3)

Country Link
EP (1) EP2718560A4 (fr)
NO (1) NO332536B1 (fr)
WO (1) WO2012169898A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU197773U1 (ru) * 2020-01-09 2020-05-28 Алексей Петрович Сеньков Поплавковая волновая электростанция

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005094450A2 (fr) * 2004-03-26 2005-10-13 Stevens, Robert Configurations et procedes d'extraction de l'energie de la houle
GB2414771A (en) * 2004-06-03 2005-12-07 Seagen Ltd A wave power generator apparatus
WO2008006145A1 (fr) * 2006-07-11 2008-01-17 Australian Sustainable Energy Corporation Pty Ltd Convertisseur d'énergie houlomotrice
WO2009140615A1 (fr) * 2008-05-15 2009-11-19 Ocean Energy Systems, Llc Système de récupération de l'énergie des vagues
WO2011126451A1 (fr) * 2010-04-07 2011-10-13 Ocean Harvesting Technologies Ab Convertisseur d'énergie des vagues et transmission

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2205582T3 (es) * 1997-12-03 2004-05-01 William Dick Convertidor de energia de las olas.
US7474013B2 (en) * 2005-11-18 2009-01-06 Wave Energy Recovery Inc. Wave energy recovery system
EA014378B1 (ru) * 2006-11-28 2010-10-29 40 Саус Энерджи Лимитед Преобразователь энергии волн
NZ587401A (en) * 2008-02-20 2012-12-21 Ocean Harvesting Technologies Ab Wave power plant with a two part generator and an energy storage device, where the storage device keeps the two part generator rotating in the same relative direction
NO331603B1 (no) * 2009-11-24 2012-02-06 Asbjorn Skotte Framgangsmate for drift av bolgekraftkonverter samt bolgekraftverk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005094450A2 (fr) * 2004-03-26 2005-10-13 Stevens, Robert Configurations et procedes d'extraction de l'energie de la houle
GB2414771A (en) * 2004-06-03 2005-12-07 Seagen Ltd A wave power generator apparatus
WO2008006145A1 (fr) * 2006-07-11 2008-01-17 Australian Sustainable Energy Corporation Pty Ltd Convertisseur d'énergie houlomotrice
WO2009140615A1 (fr) * 2008-05-15 2009-11-19 Ocean Energy Systems, Llc Système de récupération de l'énergie des vagues
WO2011126451A1 (fr) * 2010-04-07 2011-10-13 Ocean Harvesting Technologies Ab Convertisseur d'énergie des vagues et transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2718560A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU197773U1 (ru) * 2020-01-09 2020-05-28 Алексей Петрович Сеньков Поплавковая волновая электростанция

Also Published As

Publication number Publication date
EP2718560A1 (fr) 2014-04-16
NO20110813A1 (no) 2012-10-15
EP2718560A4 (fr) 2015-03-04
NO332536B1 (no) 2012-10-15

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