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METHOD AND SYSTEMS FOR FREE-FLOATING NAUTICAL STATIONKEEPING

Resumen de: US2025074554A1

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

RECIRCULATING INERTIAL HYDRODYNAMIC PUMP AND WAVE ENGINE

Resumen de: US2025067241A1

Embodiments include a buoyant wave energy converter. In an embodiment, the wave energy converter comprises an upper chamber having a first fluid reservoir and a first gas pocket, and a lower chamber having a second fluid reservoir and a second gas pocket. In an embodiment, an injection tube is between and fluidly coupled to the upper chamber and the lower chamber, where the injection tube is to impel a fluid from the second fluid reservoir into the first fluid reservoir when the upper chamber, the lower chamber and the injection tube oscillate about a waterline with the upper chamber adjacent to the waterline and the lower chamber submerged below the waterline and vertically beneath the upper chamber. An effluent tube is fluidly coupled to the upper chamber and the lower chamber, where the effluent tube is to return the fluid from the first fluid reservoir to the injection tube.

RECIRCULATING INERTIAL HYDRODYNAMIC PUMP AND WAVE ENGINE

Resumen de: US2025067240A1

Embodiments disclosed herein include buoyant wave energy converters. In an embodiment, the wave energy converter comprises an upper chamber having a first fluid reservoir and a first gas pocket, and a lower chamber having a second fluid reservoir and a second gas pocket. An injection tube is between and fluidly coupled to the upper chamber and the lower chamber, where the injection tube is to impel a fluid from the second fluid reservoir into the first fluid reservoir when the upper chamber, the lower chamber and the injection tube oscillate about a waterline with the upper chamber adjacent to the waterline and the lower chamber below the waterline and vertically beneath the upper chamber. In an embodiment, an effluent tube is fluidly coupled to the upper chamber and the lower chamber, where the effluent tube is to return the fluid from the first fluid reservoir to the second fluid reservoir.

TIDAL ENERGY CONVERTER SYSTEM FOR PRODUCING PRESSURISED FLOW

Resumen de: WO2025040935A1

A tidal energy converter system comprising a fluid pressurising subsystem and a release mechanism wherein the fluid pressurising subsystem comprises a float, a plurality of weights, at least one piston slidably received in at least one cylinder. During an upward stroke of the fluid pressurising subsystem that is correspond to a high tide, the plurality of weights is moved to an elevated position. The plurality of weights is being held at the elevated position until the float engages the release mechanism during a downward stroke. As a result, the plurality of weights falls down and causes the at least one piston to move downwards and eject pressurised fluid out of the at least one cylinder.

WAVE POWER ENGINE

Resumen de: WO2025041443A1

Provided is a technique for converting the energy of waves and appropriately storing the energy.　This wave power engine 1 converts the swaying of an oceanic moving body to prescribed energy. The wave power engine 1 includes: a first container part 21 that is fixed to an oceanic moving body and that sways in accordance with the swaying of the oceanic moving body; a weight part 3 that is housed in the first container part 21 and is configured to be movable inside the first container, and that thereby moves relative to the first container part; a hydraulic pump 4 that applies pressure to a prescribed fluid using kinetic energy based on the relative motion of the weight part 3; and a pressure accumulation tank 31 that seals the fluid pressurized by the hydraulic pump 4 and thereby accumulates the pressure of the fluid. The weight part 3 pushes in a piston 42 along with the relative motion, whereby the piston 42 slides within a cylinder 41 in the hydraulic pump 4 and pressure is applied to the fluid.

海洋発電システム

Resumen de: NZ744544A

A turbine assembly, that is positively buoyant in water, and anchored to a water bed, so that the assembly is held in a state of floating equilibrium. The turbine assembly 200 has a support structure 226 and a turbine system comprising first and second turbines, supported by the support structure, and connected by a beam 224 where the first turbine is mounted on one surface of the beam, and the second turbine is mounted on a second, opposing surface of the beam 224. The first turbine system is rotatable about a horizontal axis, relative to the support structure in a direction parallel to the operational axis of the turbine. Both turbines are a flowing-water driveable turbine for generating power from water flow. The turbines have an operational axis and are designed for optimum power output when local water flow is aligned with the operational axis. The turbines have a parallel operational axis. With two turbines operating simultaneously, the overall power generation potential is significantly increased, and by having parallel operational axes, the system can capture energy from currents flowing in either direction without sacrificing efficiency. This is particularly beneficial in bi-directional flows like tidal currents.

TWO-BODY FLEXIBLE TETHER-CONNECTED OSCILLATING WATER COLUMN

Resumen de: WO2025038693A1

An oscillating water column (OWC) includes a top body and a bottom body. The top body includes a hollow shape, an open top end, an open bottom end, a chamber traversing between the open top and bottom ends, a power take-off system proximate to the open top end, and an air channel proximate to the open top end and the power take-off system. The bottom body includes a bottom heave plate and a plurality of flexible tethers coupling the top body and the bottom body.

OFFSHORE APPARATUS FOR EXTRACTING ENERGY FROM A FLUID AND METHODS FOR ITS USE

Resumen de: AU2023331173A1

An apparatus is disclosed for extracting energy from an oscillating working fluid. The apparatus comprises a housing 50 which is positioned on a floatable support structure 120/130 that is arranged in use to float on a body of water having waves. The the housing has an internal flow passage for receiving air; and a turbine 60/70 which is disposed at the housing. A unidirectional flow of the air is drawn out of the chamber by the use of an OWC created by respective incoming and outgoing flows of waves. The unidirectional flow of the OWC acting on the turbine 60/70 is responsive to, and generated by, only one of the flows of the waves.

WAVE ENERGY APPARATUS

Resumen de: AU2023332402A1

A wave energy apparatus for extracting energy from waves generated by a body of water, the apparatus including an elongate flexible tubular body, which defines a channel therein having a longitudinal axis, and a plurality of resiliently deformable elements disposed along the tubular body; wherein the elongate flexible tubular body is inextensible in a radial direction; the elongate flexible tube is open at each end; each resiliently deformable element is axially spaced from the adjacent resiliently deformable elements; each resiliently deformable element is secured to the tubular body at two or more anchor portions, wherein the anchor portions for each resiliently deformable element are circumferentially spaced from each other; each of the resiliently deformable elements has a non-extended configuration in which the respective anchor portions of the tubular body are spaced from the longitudinal axis of the channel by a first spacing, and an extended configuration in which the anchor portions of the tubular body are displaced radially outwards and are spaced from the longitudinal axis of the channel by a second spacing, wherein the second spacing is greater than the first spacing; and wherein the cross-sectional area of the tubular body when the resiliently deformable elements are in their extended configuration is greater than the cross-sectional area of the tubular body when the resiliently deformable elements are in their non-extended configuration.

APPARATUS FOR PRODUCING ELECTRICITY FROM A MOVING FLUID AND METHOD

Resumen de: US2025059947A1

An apparatus is for producing electricity from a moving fluid, wherein the apparatus has: an elongated body having a longitudinal axis, the elongated body being arranged to be attached to the ground or seabed and exposed to the moving fluid; at least one tensioned cable, which is supported in tension from the elongated body, and which is arranged at least in part inside the elongated body and further arranged to oscillate or vibrate upon oscillation of the elongated body; and at least one energy harvester for converting kinetic energy of the at least one oscillating or vibrating tensioned cable to electric energy.

Two-Body Flexible Tether-Connected Oscillating Water Column

Resumen de: US2025059942A1

An oscillating water column (OWC) includes a top body and a bottom body. The top body includes a hollow shape, an open top end, an open bottom end, a chamber traversing between the open top and bottom ends, a power take-off system proximate to the open top end, and an air channel proximate to the open top end and the power take-off system. The bottom body includes a bottom heave plate and a plurality of flexible tethers coupling the top body and the bottom body.

PANEL ARRANGEMENT OF A WAVE ENERGY CONVERTER

Resumen de: WO2025037045A1

A panel arrangement of a wave energy converter (WEC), which panel arrangement comprises a panel (2) reciprocating about a pivot shaft (2a) on bearings (2b), and a connection mechanism (5) with a lever arm (5a), which is arranged to transfer the reciprocating motion of the panel (2) to one or more power units (3) of the WEC, which panel (2) comprises at least a top part (7) and a bottom part (9). In the front view of the panel (2) the bottom part (9) of the panel (2) is narrower than the top part (7) of the panel (2).

APPARATUS FOR GENERATING POWER FROM WATER CURRENTS

Resumen de: WO2025037988A1

Apparatus (100) for generating electric power from water currents, wherein the apparatus (100) comprises a buoyant main body (200) and at least two buoyant side bodies (210a-d) arranged in a formation with the buoyant side bodies (210a-d) arranged at each side of the buoyant main body (200). The apparatus (100) comprises power generating devices (300a-d) enabling generation of power from water flow in two directions.

WAVE ENERGY CONVERTER

Resumen de: AU2023338052A1

A wave energy converter is provided which includes a nacelle having a starboard side and a port side axis, and housing a power take-off. The wave energy converter also includes at least one buoyancy member coupled to the nacelle, and a ballast tank coupled to the nacelle. The ballast tank, the at least one buoyancy member, and the nacelle, together form a first body, where the first body is coupled to the power take-off. The wave energy converter further includes a float and a drive arm forming a second body, where the second body is rotatably coupled to the first body about a coupling axis, and the second body is coupled to the power take-off. The second body is configured to rotate relative to the first body about the coupling axis within a radial span bounded by a proximal end of the float and a radially distal end of the float. Methods for generating power with the wave energy converter are also provided.

潮汐发电系统

Resumen de: CN222436504U

本实用新型涉及发电技术领域，特别是涉及一种潮汐发电系统，包括第一做功缸、第二做功缸、活塞油箱及发电装置；所述第一做功缸包括第一缸体、设于所述第一缸体内部的第一活塞、设于所述第一活塞底部的第一液压缸；所述第二做功缸包括第二缸体、设于所述第二缸体内部的第二活塞、设于所述第二活塞底部的第二液压缸；涨潮时，水位上升，所述第一活塞的浮力大于其重力，压缩空气进入发电装置产生高压气体发电；退潮时，水位下降，所述第二活塞的重力大于其浮力，压缩空气进入发电装置产生高压气体发电。本实用新型的目的在于，提供一种能量利用率高的潮汐发电系统。

A WAVE POWER PLANT AND A ROTOR FOR USE IN A WAVE POWER PLANT

Resumen de: WO2025026758A1

Disclosed is a wave power plant comprising a frame construction extending in a longitudinal direction and having a rotor shaft extending in the longitudinal direction of the frame construction, a plurality of rocking rotors, the plurality of rocking rotors being arranged rotatably with respect to the frame construction around the rotor shaft each rocking rotor comprising a buoyant body, the buoyant body having a shell, a bearing arranged at the rotor shaft, an interface construction configured to interconnect the buoyant body with the bearing, such that the rocking rotor is rotatably connected to the rotor shaft, wherein, the shell of the buoyant body has a triangular shape having a first side and a second side being first and second convex shaped sides and a third side being a third concave shaped side, the third concave shaped side facing the rotor shaft.

FLOAT APPARATUS FOR HARNESSING WAVE ENERGY

Resumen de: US2025043764A1

A float apparatus for harnessing the kinetic energy of waves. The float apparatus includes a float having a central vertical tunnel. An elongated housing is disposed within the tunnel, the housing has a closed top and an open bottom. A wire coil is disposed within the housing. A bar magnet is received within the housing and the wire coil, wherein the movement of the bar magnet relative to the wire coil within the housing results in generation of current in the wire coils. A ballast that submerges in water is suspended from the float body by multiple elastic cords. A shaft extends between the bar magnet and the ballast. The movement of the float body relative to the ballast by waves causes the magnet to move relative to the wire coils generating electricity.

SELF-POWERED, SELF-PROPELLED COMPUTER GRID WITH LOOP TOPOLOGY

Resumen de: US2025043763A1

An energy-harvesting compute grid includes computing assemblies that cooperate with mobile energy harvesters configured to be deployed on a body of water. The plurality of energy harvesters are positioned on and move adjacent to an upper surface of a body of water, and the locations of the energy harvesters can be monitored and controlled. The wide-spread gathering by the harvesters of environmental data within that geospatial area permits the forecasting of environmental factors, the discovery of advantageous energy-harvesting opportunities, the observation and tracking of hazardous objects and conditions, the efficient distribution of data and/or tasks to and between the harvesters included in the compute grid, the efficient execution of logistical operations to support, upgrade, maintain, and repair the cluster, and the opportunity to execute data-gathering across an area much larger than that afforded by an individual harvester (e.g., radio astronomy, 3D tracking of and recording of the communication patterns of marine mammals, etc.). The computational tasks can be shared and distributed among a compute grid implemented in part by a collection of individual floating self-propelled energy harvesters thereby providing many benefits related to cost and efficiency that are unavailable to relatively isolated energy harvesters, and likewise unavailable to terrestrial compute grids of the prior art.

wave force pumping apparatus

Resumen de: KR20250016952A

개시되는 파력 양수 장치가 파력 양수 본체와, 파력 승강 실린더와, 파력 승강 피스톤과, 파력 승강축과, 부력체와, 양수관과, 양수 벽체와, 해수 유입홀과, 해수 유입 개폐 밸브와, 양수 유입홀과, 양수 유입 개폐 밸브를 포함함에 따라, 상기 부력체가 파도에 의해 반복적으로 승강되면서 양수가 반복적으로 자동적으로 이루어질 수 있게 되어, 파력을 이용한 양수를 위한 간명한 구조를 이루면서도, 상기 파력 양수 장치를 그대로 옮겨서 간단히 설치하기만 하면 되어, 그 이동 설치가 용이해질 수 있게 되는 장점이 있다.

ENERGY HARVESTER

Resumen de: KR20250012939A

본 발명의 실시예는 진동 운동 등으로 유도된 기계적 에너지를 입력받아 간단한 구조로 용이하고 효과적으로 전기적 에너지로 변환이 가능하고 자연의 힘 또는 기존의 손실되는 기계적 에너지를 이용하여 전기 에너지를 수확함에 따라 친환경적이고 효율적인 에너지 수확기에 관한 것이다. 이를 위해, 본 발명의 실시예는 내부에 수용 공간을 갖는 오뚝이 형상의 수확기 본체; 상기 수용 공간에 자유 이동 가능하게 구비되는 정전기 유도 물체; 및 상기 수용 공간의 하부 양측단에 상호 대응되게 구비되어, 상기 수확기 본체에 외력이 인가될 시 상기 수확기 본체가 반복적인 요동 후 원상태로 복원되는 무게 추로 작용되며, 상기 수확기 본체의 요동 시 상기 정전기 유도 물체와의 접촉 및 분리에 의해서 전기 에너지를 생성하는 대전 유닛;을 포함하는, 에너지 수확기가 제공된다.

動いている流体から電気を生成するための装置及び方法

Resumen de: MX2024008689A

Apparatus for producing electricity from a moving fluid comprising: - an elongated body having a longitudinal axis, the elongated body being arranged to be attached to the ground or seabed and exposed to the moving fluid; - at least one tensioned cable, which is supported in tension from the elongated body, and which is arranged at least in part inside the elongated body and further arranged to oscillate or vibrate upon oscillation of the elongated body; and - at least one energy harvester for converting kinetic energy of the at least one oscillating or vibrating tensioned cable to electric energy.

REACTIVE, REVERSIBLE BLADE TURBINE FOR POWER GENERATION AND PUMPING WATER

Resumen de: US2025035080A1

A reactive blade turbine system works vertically, horizontally, or at an angle and clockwise or counterclockwise according to blade angle and locking position and adjusts to variations in fluid flow such as changes in tidal currents to generate power more efficiently regardless of direction of fluid flow. A method for generating electrical power from a continuous fluid flow via the reactive turbine system is also provided herein.

WAVE-ACTUATED SYSTEM, WAVE ENERGY CONVERTER SUBSYSTEM, AND METHOD FOR OPERATING A REVERSE-OSMOSIS DESALINATION SUBSYSTEM

Resumen de: US2025035081A1

A wave-actuated system for desalination of water by reverse osmosis (RO) has at least one offshore wave energy converter subsystem for pumping salt water and supplying the pumped salt water via a water outlet, a pretreatment subsystem hydraulically connected to the water outlet of the at least one offshore wave energy converter subsystem, and a RO desalination subsystem receiving filtered water from the pretreatment subsystem. The at least one wave-energy converter has a float and a hydraulic cylinder pumping salt water to the RO desalination subsystem. A method for operating a reverse-osmosis desalination subsystem using pressurized salt water supplied by at least one wave energy converter subsystem is described. A method for making a hull is also described.

波力利用装置及び波力利用装置の制御方法

Resumen de: WO2023100596A1

A wave-receiving box (101) is provided with a wave introduction part (103). A compression tube (105) is configured from an air compression section (106) and an air compression means (107). The wave introduction part (103) is opened at the initial stage of a leading wave, and is closed when a wave (201) having air-compressible velocity flows into the wave-receiving box (101), whereby the wave is drawn into the wave-receiving box (101) and the air compression means (107) is pushed upward, thus making it possible for the kinetic energy of the wave to be converted into compressed air and stored in a compressed air storage tank (111) for use in power generation and the like.

Ocean wave energy conversion apparatus and method

Nº publicación: GB2632093A 29/01/2025

Solicitante:

HAVKRAFT AS [NO]
Havkraft AS

Resumen de: GB2632093A

A wave energy conversion apparatus 10. The apparatus includes a plurality of modules (30C, 30E). The modules 30C, 30E when coupled together form polygonal perimeter edges of the apparatus (60, fig. 3) along with a structural frame, where ocean waves 50 are received when in use. The modules include multiple columns 90 that are configured to be at their lower openings 110 in fluid communication with the ocean 40 and at their upper ends in fluid communication with a power conversion arrangement 100 that converts air flow occurring in the columns to electrical power. The columns share at least one of: one or more non-hollow dividing walls 120 or one or more non-hollow lateral side walls 122, 124. The long axes of the columns may be at an oblique angle to the water surface. The modules may include 2 or up 5 columns, manufactured from sheet metal. The apparatus may include propellers (70, fig. 3) for orientation and location. Ballast tanks (130, fig. 4b), an anchoring arrangement may also be included. The apparatus may function in a survival mode where one or more columns of the modules is filled with water. A method of assembly and installation is also included.