WO2016195600A1 - Convertisseur d'énergie des vagues - Google Patents

Convertisseur d'énergie des vagues Download PDF

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Publication number
WO2016195600A1
WO2016195600A1 PCT/SG2016/050261 SG2016050261W WO2016195600A1 WO 2016195600 A1 WO2016195600 A1 WO 2016195600A1 SG 2016050261 W SG2016050261 W SG 2016050261W WO 2016195600 A1 WO2016195600 A1 WO 2016195600A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
wave energy
energy converter
guide
floating structure
Prior art date
Application number
PCT/SG2016/050261
Other languages
English (en)
Inventor
Michael Lochinvar Sim ABUNDO
Ding Feng NG
Htet LIN
Narasimalu Srikanth
Original Assignee
Nanyang Technological University
Maritime And Port Authority Of Singapore
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 Nanyang Technological University, Maritime And Port Authority Of Singapore filed Critical Nanyang Technological University
Priority to SG11201708101PA priority Critical patent/SG11201708101PA/en
Publication of WO2016195600A1 publication Critical patent/WO2016195600A1/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
    • F03B13/1845—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 slides relative to the rem
    • F03B13/1855—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 slides relative to the rem where the connection between wom and conversion system takes tension and compression
    • 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
    • F03B13/1845—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 slides relative to the rem
    • 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
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/40—Organic materials
    • F05B2280/4004—Rubber
    • 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

  • This invention relates to a wave energy converter.
  • turbines, vanes, mills or pistons commonly use turbines, vanes, mills or pistons to drive the rotors of generators.
  • most of the existing technologies developed have a rated operating range that does not address capturing energy in low wave height conditions.
  • Table 1 below lists some existing wave energy conversion devices, in which the onshore Islay LIMPET device requires civic works for a concrete infrastructure similar to that of a small barrage.
  • Wave Wave Wave Dragon Overtopping Denmark Offshore reservoir traps Dragon ApS Device and collects water from deflect waves to drive hydroelectric turbines using gravity.
  • the presently disclosed wave energy converter translates linear to rotary motion and uses vertical linear motion of floating structures caused by transverse motion of waves appropriately to drive typical generators (e.g. rotational, linear).
  • the wave energy converter is a modular onshore device that is completely above the water surface, therefore not requiring drivetrain components to interact with water volume under normal operating conditions.
  • the wave energy converter can be primarily provided for power generation, or as an added functionality for structures such as jetty pontoons or floating platforms where the primary function of such structures is for movement/storage of persons/objects, and stability of said structure is required.
  • the wave energy converter is intended for power generation for jetties, harbours, marine ports, oil rigs, offshore installations, shore-based loads, berthed/anchored ships. This is applicable as long as there is a relatively static structure that enables the floating platform and the roller to engage and rotate due to wave motion.
  • the wave energy converter has a combined functionality (structural support, stability and power generation) for both passive structures (e.g. jetties, pontoons) and dynamic bodies (e.g. ships).
  • a wave energy converter comprising: a roller connected to a floating structure on water having surface waves, the roller configured to roll against a guide to which the floating structure is coupled, wherein relative motion between the guide and the floating structure caused by the surface waves results in rotational motion of the roller; and a generator configured to convert the rotational motion of the roller into electricity.
  • the wave energy converter may further comprise a surface engager configured to ensure continual contact of the roller against the guide
  • the surface engager may comprise a compression spring in connection between the roller and the floating structure.
  • the wave energy converter may further comprise a linear guide having linear shaft guides supporting linearly moveable shafts, a first end of the linearly moveable shafts attached to the roller and a second end of the linearly moveable shafts attached to the compression spring, the linear shaft guides being immoveable relative to the floating structure.
  • the wave energy converter may further comprise a mounting configured to be attached to the floating structure, wherein the roller, the compression spring and the linear guide are provided on the mounting.
  • the surface engager may comprise a clamping arrangement comprising the roller and a secondary roller, the roller and the secondary roller rolleably clamping the guide therebetween, the clamping arrangement coupling the floating structure to the guide.
  • the wave energy converter may further comprise a gearbox provided between the roller and the generator to step up rotations from the roller to the generator.
  • the wave energy converter may further comprise an energy storage device to store the electricity.
  • the floating structure may be a pontoon and the guide may be a stationary pile.
  • the guide may be a vertical beam attached to a side of a ship.
  • the guide may be an anchor chain of a ship.
  • the guide may be a leg of an oil platform.
  • Fig. 1 is a plan view of a first embodiment of the wave energy converter attached to a pontoon.
  • Fig. 2 is a side view of the wave energy converter of Fig. 1.
  • Fig. 3 is a schematic illustration of operation of a roller and gearbox of the wave energy converter.
  • Fig. 4 is a photograph of a generator of an experimental prototype of the wave energy converter.
  • Fig. 5 shows curves of voltage, torque and power against rotation speed of the generator of Fig. 4.
  • Fig. 6 is a photograph of a gearbox of the experimental prototype of the wave energy
  • Fig. 7 is a photograph of a laboratory drop test set-up of the experimental prototype of the wave energy converter.
  • Fig. 8 is a photograph of an existing roller of a pontoon acting on a stationary steel pile as guide posts for the pontoon.
  • Fig. 9 is a schematic illustration of installation of the experimental prototype of the wave energy converter on the pontoon of Fig. 8.
  • Fig. 10 is a photograph of the experimental prototype of the wave energy converter installed on the pontoon of Fig. 8.
  • Fig. 1 1 is a photograph of an ultrasonic displacement sensor installed on an existing roller of the pontoon of Fig. 8.
  • Fig. 12 is a graph of wave conditions at the pontoon of Fig. 8 during a field test of the experimental prototype of the wave energy converter.
  • Fig. 13 is graph of power output of the experimental prototype of the wave energy
  • Fig. 14 shows schematic illustrations of alternative embodiments of the wave energy
  • Fig. 15 is a schematic illustration of a further embodiment of the wave energy converter used with a ship.
  • the wave energy converter 10 comprises a roller 30 and a generator 60.
  • the wave energy converter 10 preferably also comprises a mounting 20 configured to be immoveably attached to a floating structure 100, such as a pontoon 100, that is floating on water where surface waves are present.
  • the surface waves cause sinusoidal motion of the floating structure 00.
  • the pontoon 100 is generally constrained from substantial horizontal translational motion by stationary guide pylons or piles 200 to which the pontoon 100 is coupled, while being free to move vertically relative to the piles 200 according to the surface waves in the water on which it is floating.
  • the piles 200 are typically made of steel.
  • the roller 30 is configured to roll against a guide 200, such as the vertical surface 202 of the stationary pile 200, to convert sinusoidal motion of the pontoon 100 caused by the surface waves into rotational motion.
  • the roller 30 is preferably made of rubber, and is configured to roll against one of the piles 200 at the pontoon 100.
  • a surface engager 40 is preferably provided to ensure continual contact of the roller 30 with the steel pile guides 200 at all times to maintain necessary friction between the pontoon pile 200 and the roller 30.
  • the surface engager 40 is connected between the roller 30 and the floating structure 100.
  • the surface engager 40 may comprise a compression spring 40. The spring 40 is provided to overcome frictional losses between the steel pile 200 and the rubber roller 30.
  • the high performance compression spring 40 is loaded behind the roller 30 to ensure contact of the roller 30 with the pile 200 all the time.
  • the compression spring 40 is attached to the mounting 20 and biases the roller 30 away from the mounting 20.
  • the mounting 20 is attached to the floating structure 100 with the spring 40 under some compression when the roller 30 is in contact with a vertical surface of the pile 200.
  • the roller 30 is kept in constant contact with the pile 200 so that when the floating structure 100 moves up and down on the water as a result of the surface waves, the roller 30 attached to the floating structure 100 rolls against the pile 200 and moves vertically relative to the pile 200 corresponding to vertical movement of the pontoon 200.
  • the mounting 20 comprises a mounting table 20 to which the different components are attached. This may be by means of bolts in order to be easily detachable for maintenance and future design changes.
  • a linear guide 50 is further provided to attach the roller 30 to the mounting table 20 under bias of the spring 40.
  • Linear shaft guides 52 of the linear guide 50 are immoveably attached to the mounting table 20 and support linearly moveable shafts 54.
  • the roller 30 is attached to a first end 54-1 of the shafts 54 while a first end 40- 1 of the compression spring 40 is attached to a second end 54-2 of the shafts 54.
  • a second end 40-2 is attached to the mounting table 20.
  • the shafts 54 extend the roller 30 away from the mounting table 20 to contact the steel pylon 200 with the spring 40 under some compression when the mounting table 20 is attached to the pontoon 100.
  • the generator 60 is configured to receive rotations from the roller 30 to generate electricity.
  • a gearbox 70 may be provided to increase the rotational speed of the roller 30 to the rated speed of the generator 60 if necessary.
  • the gearbox 70 is preferably a right- angled gearbox 70 installed between the rubber roller 30 and the generator 60 to increase rotational speed input to the rotor of the generator 60.
  • the rated rotational speed required by off-the-shelf generators 60 is generally higher than the rotational speed of the roller 30 at the pontoon 100 such that the gearbox 70 is required to step up the rotational speed, as shown in Fig. 3.
  • the gearbox has a gear ratio of 10.
  • the power of the generator 60 is controlled by installing a charge controller after the generator 60 for maximized power production.
  • a charge controller instead of the charge controller, a constant resistor bank was installed to track power conversion.
  • r radius of WEC roller (m)
  • ⁇ angular velocity (r ad /sec)
  • the generator 60 used was a permanent magnet generator supplied by Ginlong Technologies, China, model no. GL-PMG-500A, as shown in Fig. 4. Specifications of the motor are given in Table 1 below.
  • Rotation speed of the roller 30 was expected to be at about 30 rpm.
  • a gearbox 70 was required. The following shows the calculations performed to obtain the correct gearbox 70 rating. 'WEC refers to the wave energy converter 10.
  • the frictional force required at the WAVE ENERGY CONVERTER roller was less than available heave forces on the pontoon which were calculated to be 3.3 kN.
  • the gearbox 70 selected for the experimental prototype of the wave energy converter was an ABR-Series High Precision Planetary Gearbox by Apex Dynamics, USA, as shown in Fig. 6.
  • a spring 40 having loading capacity of 5, 185.8 N at 00% stroke was selected for prototype testing of the experimental prototype and a desirable stroke length was reconfigured for final site installation.
  • Wave motion for the wave energy converter 10 was replicated as a single stroke drop test using the experimental prototype to characterize its performance in a lab.
  • the spring 40 was loaded at desired stiffness to keep the roller 30 and a wall simulating the guide pile 200 at optimal position in contact.
  • the experimental prototype 0 was released from the set height. This was achieved by cutting a rope carrying the experimental prototype 10 (the rope being attached to the chain hoist) to let the roller 30 drop freely, while rolling against the wall 200, to simulate one downward stroke motion.
  • the drop test setup did not have control over the dropping velocity and its acceleration was governed entirely by gravity.
  • the objective of the drop test was to confirm the smooth operation of the gearbox 70 and roller assembly 30 and the frictional control by spring stiffness of the spring 50.
  • the experimental prototype wave energy converter 10 was tested on a pontoon 100 (Fig. 8) at a ferry terminal in Singapore.
  • a frame 22 of the mounting table 20 was welded to a bracket 120 of an existing roller 130 of the pontoon 100, as indicated in Fig. 9.
  • Fig. 10 shows the wave energy converter 10 installed on the pontoon 100.
  • Up and down motion of the pontoon 100 was captured using ultrasonic displacement sensor (Maxbotix MB7360) 300 mounted onto the pontoon 100, as shown in Fig. 1 1.
  • ultrasonic displacement sensor Maxbotix MB7360 300 mounted onto the pontoon 100, as shown in Fig. 1 1.
  • wave conditions from deployed wave sensors (not shown) were recorded for comparison against pontoon movement.
  • the pontoon 100 and the wave sensors were distant from each other because of different installation spots (despite being in the close vicinity). Consequently, the wave height detected by the wave sensors and the pontoon displacement detected by the displacement sensor 300 were noticed to be slightly out of phase.
  • Power output of the generator 60 was tracked and logged using DEWETRON data acquisition system and a personal computer using an analogue channel measuring the voltage across sense resistor (0.15 ohms).
  • the generator 60 was loaded with a series of resistive load of 8 ohms in total, which was connected to the generator 60 via a rectifier.
  • two threaded rods were installed together with the spring 40 of the roller device or wave energy converter 10 to control the spring stiffness before engaging it. Once the desired stiffness was set, the threaded rods were released by unscrewing the nuts and fixing the spring holder position onto the base-plate of the table or the mounting table 20.
  • the spring 40 was loaded at 2,000 N to produce required friction between the pontoon pylon or pile 200 and the rubber roller 30.
  • the wave energy converter 10 was operating in an approximate range at the estimated designed loading and the power output of the wave energy converter 10 was within the range of the expected power matrix.
  • the estimated power output matrix of the wave energy converter 10 is shown in Table 4 below at different wave heights and periods. WEC Power Wave Period, T (sec)
  • the wave energy converter 10 may be used with ships, as shown in Fig. 15.
  • a guide 200 having a vertical surface 202 is secured to the ship 400.
  • the guide 200 may be in the form of a vertical beam attached to the side of the ship 400.
  • the roller 30 is connected to a floating structure 100 such as a buoy or platform that floats alongside the ship 400.
  • the roller 30 is positioned to roll against the vertical surface 202 of the guide 200.
  • the difference in buoyancy between the ship 400 and the floating structure 100 will result in rotary motion in the roller 30 when the ship 400 and the floating structure 100 encounter a wave.
  • This rotary motion is converted to electricity in a generator 60 of the wave energy converter 10, in a similar manner as in the pontoon version of the wave energy converter 10 as described above with reference to Figs. 1 to 14.
  • a generator 60 of the wave energy converter 10 In a similar manner as in the pontoon version of the wave energy converter 10 as described above with reference to Figs. 1 to 14.
  • symmetrical deployment of wave energy converters 10 on both sides of the ship 400 may be required.
  • a surface engager 40 comprising a clamping arrangement 40 is provided, as shown in Fig. 15.
  • the clamping arrangement 40 comprises the roller 30 and a secondary roller 32 clamping the vertical guide 200 therebetween.
  • the floating structure 100 is coupled to the ship 400 to allow movement of the floating structure 100 relative to the ship 400 only along one axis.
  • the surface engager 40 may comprise a compression spring 40 connected between the roller 30 and the floating structure 100.
  • An alternative design of the wave energy converter 10 for use with ships would be to use a deployed anchor chain in tension of the ship 400 as the guide 200 against which the roller 30 rolls, the wave energy converter 10 being mounted on a float 100 alongside the ship 400.
  • a secondary roller 32 may be provided such that the roller 30 and the secondary roller 32 clamp onto the anchor chain 200 serving as the guide 200.
  • the clamping can be achieved by means of passing the chain 200 between the roller 30 and the secondary roller 32 that exert compressive forces on the chain links with the use of springs or pistons.
  • the roller 30 and secondary roller 32 can take the form of gears to allow greater engagement between the wave energy converter 10 and the anchor chain 200 and thus reduce slippage. Rotation from the roller 30 is input to the generator for conversion to electricity.
  • Variants of the wave energy converter that can be mounted on a miniature pontoon or float that is coupled to a leg of an oil platform can also be developed.
  • Another possibility of a variant is one which is designed to be a stand-alone electricity generation installation in deeper waters for higher power output.
  • Pile-like structures engaged by the rollers of wave energy converters mounted on floating pontoons on all sides can serve as a wave power generation installation similar to off-shore wind turbine or tidal turbine installation.
  • a further possible embodiment of the wave energy converter is to incorporate a roller fender of a pontoon as the roller of the wave energy converter.
  • a roller fender is basically a rubberised roller that is mounted on floating pontoons to cushion any impact of the pontoon against a jetty or piles due to the waves.
  • a roller 30 connected to a generator 60 on an independent float/buoyant body 100 can function as a wave energy converter 10 when the roller 30 engages a guide 200 such as a surface of the existing marine structure 200 in a secured manner.
  • the wave energy converter 10 may additionally comprise an energy storage device (not shown) to store the electricity produced by the generator 60 from the rotational motion from the roller 30.
  • an energy storage device not shown
  • all parts of the wave energy converter 10 are above the water level, thereby minimizing corrosion, and reducing the need for maintenance and change of parts.
  • the different embodiments of the surface engager e.g. spring, clamping arrangement
  • the different guides e.g. stationary pile, vertical beam of ship, anchor chain
  • Such means may include hydraulic or pneumatic pistons. While embodiments have been described with reference to a ship, the wave energy converter may be deployed with other vessels.
  • relative motion between the floating structure and the guide has been described in some examples as being vertical, the relative motion need not be strictly vertical so long as there is relative motion between the guide and the floating structure arising from surface waves in the water on which the floating structure floats that results in the roller rolling against the guide to give rise to rotational motion of the roller for conversion into electricity by the generator.

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

Abstract

L'invention concerne un convertisseur d'énergie des vagues comprenant : un rouleau relié à une structure flottante sur de l'eau ayant des vagues de surface, le rouleau étant configuré pour rouler contre un guide auquel est accouplée la structure flottante. Le mouvement relatif entre le guide et la structure flottante causée par les vagues de surface produit un mouvement de rotation du rouleau. L'objet de l'invention comprend également un générateur configuré pour convertir le mouvement de rotation du rouleau en électricité.
PCT/SG2016/050261 2015-06-05 2016-06-03 Convertisseur d'énergie des vagues WO2016195600A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG11201708101PA SG11201708101PA (en) 2015-06-05 2016-06-03 Wave energy converter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG10201504426V 2015-06-05
SG10201504426V 2015-06-05

Publications (1)

Publication Number Publication Date
WO2016195600A1 true WO2016195600A1 (fr) 2016-12-08

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Application Number Title Priority Date Filing Date
PCT/SG2016/050261 WO2016195600A1 (fr) 2015-06-05 2016-06-03 Convertisseur d'énergie des vagues

Country Status (2)

Country Link
SG (1) SG11201708101PA (fr)
WO (1) WO2016195600A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021203732B1 (en) * 2020-03-27 2021-09-02 Aquatic Energy Pty Ltd A tidal power generation system
WO2021189102A1 (fr) * 2020-03-27 2021-09-30 Garrie Johnstone Système de génération d'énergie marémotrice

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389810B1 (en) * 1998-12-24 2002-05-21 Nenad Nakomcic Wave energy converter with float
US20100084868A1 (en) * 2008-10-08 2010-04-08 Icksoo Shin apparatus for converting wave energy into electrical energy
WO2010047677A1 (fr) * 2008-10-24 2010-04-29 Ocean Power Technologies, Inc. Convertisseur d’énergie houlomotrice avec oscillateur interne masse-ressort
US20110285128A1 (en) * 2008-11-14 2011-11-24 Hobdy Miles Wave energy converter
US20130008158A1 (en) * 2009-11-06 2013-01-10 Raphael Hon Wave Energy Conversion Device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389810B1 (en) * 1998-12-24 2002-05-21 Nenad Nakomcic Wave energy converter with float
US20100084868A1 (en) * 2008-10-08 2010-04-08 Icksoo Shin apparatus for converting wave energy into electrical energy
WO2010047677A1 (fr) * 2008-10-24 2010-04-29 Ocean Power Technologies, Inc. Convertisseur d’énergie houlomotrice avec oscillateur interne masse-ressort
US20110285128A1 (en) * 2008-11-14 2011-11-24 Hobdy Miles Wave energy converter
US20130008158A1 (en) * 2009-11-06 2013-01-10 Raphael Hon Wave Energy Conversion Device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LI Z. ET AL.: "Energy-harvesting shock absorber with a mechanical motion rectifier.", SMART MATERIALS AND STRUCTURES, vol. 22, no. 2, 21 December 2012 (2012-12-21), pages 1 - 10, XP020237928, [retrieved on 20160719] *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021203732B1 (en) * 2020-03-27 2021-09-02 Aquatic Energy Pty Ltd A tidal power generation system
WO2021189102A1 (fr) * 2020-03-27 2021-09-30 Garrie Johnstone Système de génération d'énergie marémotrice
GB2607756A (en) * 2020-03-27 2022-12-14 Aquatic Energy Pty Ltd A tidal power generation system
GB2607756B (en) * 2020-03-27 2023-07-12 Aquatic Energy Pty Ltd A tidal power generation system
US11815061B2 (en) 2020-03-27 2023-11-14 Aquatic Energy Pty Ltd Tidal power generation system
EP4088019A4 (fr) * 2020-03-27 2024-01-17 Aquatic Energy Pty Ltd Système de génération d'énergie marémotrice

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