Tide And Wave Motors Patents (Class 290/53)
  • Patent number: 11174831
    Abstract: A wave energy collection and conversion system that uses a compliant capture mechanism to enable the collection of wave energy over extensive distances without introducing damaging forces onto the collection structure. The system includes a flexible membrane in contact with or submerged under water, a plurality of power generation devices positioned on a sea floor, and lines that connect the flexible membrane to the power generation devices. The power generation devices each include a self-reeling mechanism and a turbine. As wave energy pushes the flexible membrane, the lines are reeled into and out of the corresponding power generation device(s). Rotation of the shaft, in turn, rotates a gear and rotator of the turbine, thus harnessing energy derived from the wave motion.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 16, 2021
    Assignee: University of North Florida Board of Trustees
    Inventors: Donald Thomas Resio, Abdallah Walid Mohamed Kamal El Safty, Michelle Ann Vieira, Ashley Norton, Brian Thomas Kopp, William R. Dally
  • Patent number: 11156201
    Abstract: A buoyant wave energy device is disclosed that incorporates an open-bottomed tube of substantial length in which is partially enclosed a first body of water that oscillates in response to wave action. The device incorporates a buoy to which an upper end of the tube is connected and inside of which is trapped a second body of water of substantial mass. A differential phase in the oscillations of the water trapped in the tube, and the oscillations of the buoy of augmented mass, result in the periodic compression of a pocket of air trapped at the top of the tube, and in the subsequent expulsion of pressurized air through a turbine, thereby generating electrical power.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: October 26, 2021
    Assignee: Lone Gull Holdings, Ltd.
    Inventors: Garth Alexander Sheldon-Coulson, Brian Lee Moffat, Daniel William Place
  • Patent number: 11149716
    Abstract: An offshore wind-solar-aquaculture integrated floater is provided, including vertical-axis wind turbine systems, solar photovoltaic panels, and a cube aquaculture cage. Four vertical-axis wind turbine systems are respectively rigidly connected to four corners of the cage; solar photovoltaic panels and a living and working quarter are located on cage deck; and side frames of the cage are equipped with tensile nets, the bottom frame of cage is equipped with a bottom net, and columns of the cage are equipped with lifting rails. This floater has good stability, sea-keeping performance and high strength. Utilizations of offshore wind and solar energy above the cage are high and they complement each other in power generation. This disclosure manages to exploit ocean resources to an unprecedentedly large extent, while resolving the issue of combing power generation with marine aquaculture in moderate and deep seas.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: October 19, 2021
    Assignee: Tsinghua Shenzhen International Graduate School
    Inventors: Xiangyuan Zheng, Huadong Zheng, Yi Li
  • Patent number: 11111897
    Abstract: The present invention provides improvement of the operation of a wave energy system by use of a method for predictive control (COM) of the converter machine that maximizes the energy generated by considering the energy conversion efficiency (MOD ENE) and a wave prediction (PRED). Furthermore, the method according to the invention determines the optimal control by minimizing an objective function weighted and discretized by the trapezoidal rule.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 7, 2021
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Paolino Tona, Hoai-Nam Nguyen
  • Patent number: 11098690
    Abstract: A breaking waves power generator includes a platform, a plurality of water wheels rotatably mounted within the platform, and a deck plate mounted within the platform. The water wheels include a plurality of vanes, blades, paddles, or buckets that, when impacted by breaking water waves, cause rotation of the water wheels. Breaking water waves can travel over the deck plate. The deck plate has an angular position and horizontal position relative to the platform that are adjustable to guide the breaking water waves so that the water waves break against the vanes, blades, paddles, or buckets of the water wheels, causing rotation of the water wheels from which power is generated. A ramp is connected to the platform in front of the water wheels, over which water is guided to the platform so that water waves break against the water wheels.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: August 24, 2021
    Inventor: Vincent Roland
  • Patent number: 11090501
    Abstract: A heart pacemaker according to the present invention includes a generator configured to generate nonlinear electrical energy using a friction element and an energy harvester configured to sequentially store the generated nonlinear electrical energy in multi-stage multiple energy storages and supply the electrical energy stored in the multiple energy storages.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: August 17, 2021
    Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Hyun Moon Park, Dong Sun Kim, Tae Ho Hwang
  • Patent number: 11067062
    Abstract: An apparatus for capturing energy of a working mass may include two or more immiscible liquids having different densities. The two immiscible liquids may include a predetermined proportion of oil and water. The apparatus may include a supporting structure, a hermetically sealed vessel, and an electric generator driven by fluid flow. The hermetically sealed vessel may have an elongate shape housing the working mass such that the working mass moves within the hermetically sealed vessel. An electric generator driven by fluid flow may be housed within the hermetically sealed vessel and having an inlet and an outlet. The electric generator driven by fluid flow may be configured to produce electric power as the predetermined portion of oil and water passes into the inlet and out of the outlet in response to a movement of the hermetically sealed vessel.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: July 20, 2021
    Assignee: LOOK FOR THE POWER, LLC
    Inventor: John A. Saavedra
  • Patent number: 11028819
    Abstract: Disclosed is a novel device that converts some of the power in ocean waves into electrical power or other means of performing useful work. One or more tubes are arranged so that when the device is in position in a body of water, the tubes are oriented vertically with one end positioned proximate to and/or above the surface of the body of water on which the device floats, and with the other end positioned below the surface of that body of water. In some embodiments, through a differential restriction on the flow of air in and out of an upper end of the tube, the average height of the water inside the tube is different from the average height of the water outside the tube. In some embodiments, a hollow void inside a flotation structure of the embodiment is filled with water to contribute significant mass to the embodiment and increase the momentum associated with its vertical oscillations.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: June 8, 2021
    Assignee: Lone Gull Holdings, Ltd.
    Inventors: Garth Alexander Sheldon-Coulson, Brian Lee Moffat, Daniel William Place
  • Patent number: 11028818
    Abstract: A system converts mechanical wave energy into electrical energy. The system includes a wave energy converter (WEC), which includes a surface float, a reaction structure, a plurality of flexible tethers, and a plurality of drivetrains. Each flexible tether connects the surface float to the reaction structure. Each drivetrain is connected to a corresponding flexible tether. Each flexible tether has a length established to treat the system as an inverse pendulum to utilize a horizontal surge motion of the surface float to present tension at the corresponding drivetrain for production of electrical energy from the horizontal surge motion.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: June 8, 2021
    Assignee: Oscilla Power Inc.
    Inventors: Brian J Rosenberg, Timothy R Mundon
  • Patent number: 11018554
    Abstract: A method of generating hydro-electric energy utilizing a conduit located beneath the surface of a river or stream to feed water into a hydro-electric turbine, eliminating the need to build costly and time-consuming dams and locks.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: May 25, 2021
    Inventors: Frederick Forbes Vannan, Jr., John Brian Dahl
  • Patent number: 11009000
    Abstract: A wave energy converter utilizes a flotation module that rises and falls with the passage of waves, a submerged tube containing a constriction which multiplies the speed of the water passing therethrough, a turbine (or other hydrokinetic apparatus) positioned so as to extract energy from the accelerated flow of water within and/or through the tube, and a submerged gas- or liquid-filled chamber housing one or more energy conversion components (e.g. generators, transformers, rectifiers, inverters). By providing a chamber in proximity to the turbine, generators can be placed in closer proximity to the turbine that turns them, and the shared shaft can be shorter than if the generators were placed in the buoy adjacent to the surface.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: May 18, 2021
    Assignee: Lone Gull Holdings, Ltd.
    Inventors: Brian Lee Moffat, Garth Alexander Sheldon-Coulson
  • Patent number: 10989164
    Abstract: A wave energy conversion device whereby its structural design and positioning converts oscillating wave energy into unidirectional wave induced water flow. A judiciously placed upper closed perimeter boundary positioned on a submerged horizontally oriented surface pierced with an opening, focuses incident waves inward creating a resonant wave condition where the superposition of waves induces a predominantly downward unidirectional flow through the opening. A segmented sealed upper boundary results in the additional storage of water head due to the overtopping of waves, thus further smoothening and increasing the magnitude of the unidirectional flow. This wave energy converter can be utilized with unidirectional hydro turbines for electrical power generation.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: April 27, 2021
    Inventor: Richard W. Carter
  • Patent number: 10984936
    Abstract: An electropermanent magnet array is provided. The electropermanent magnet array includes one or more of a plurality of electropermanent magnets of common length, arranged in a parallel fashion, and a planar pole piece, coupled to the first ends of the plurality of electropermanent magnets. Each electropermanent magnet includes a first and a second end opposite the first end.
    Type: Grant
    Filed: May 17, 2020
    Date of Patent: April 20, 2021
    Assignee: Altius Space Machines Inc.
    Inventor: Andreas Jochum
  • Patent number: 10947951
    Abstract: A turbine comprises a shaft (20), a mass (10) eccentrically mounted for rotation about shaft (20), having its center of gravity at a distance from the shaft (20) and a motion base (15). Motion base (15) rigidly supports the shaft (20), and is configured for moving the shaft (20) in any direction of at least two degrees of movement freedom, except for heave. A floating vessel-turbine (120), encloses entirely the eccentrically rotating mass (10) and the motion base (15). The turbine converts ocean wave energy into useful energy, very efficiently.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: March 16, 2021
    Inventor: Vassilios Vamvas
  • Patent number: 10938276
    Abstract: A method of mechanical-to-electrical energy conversion utilizes a mechanical spring in combination with a rapid-action variable inductance magnetic flux switch to convert a spring-loaded mechanical energy into a change in magnetic flux captured by an electrical coil element within the magnetic flux switch. The change in coil inductance and magnetic flux induces a current to flow through the electrical coil in the form of a a pulse of electrical energy that may be stored. The electrical coil is coupled to the mechanical spring so that each time the spring is released, the coil moves with respect to a magnetic core and a change in flux is created. The application of an external mechanical force (such as human locomotion) functions to compress and subsequently “unlock” the mechanical switch, allowing for the electrical energy associated with the application of aperiodic forces to be harvested.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: March 2, 2021
    Inventors: Thomas Nikita Krupenkin, Joseph Ashley Taylor
  • Patent number: 10934993
    Abstract: An apparatus for generating energy from ocean waves, the apparatus including a first or outer section arranged to be coupled to a sea floor and a second or inner section that is at least partially received by and slidably moveable within the first section. The first section includes a float housing arranged to be located toward or at a sea surface and an armature housing extending from the float housing toward the sea floor, the float housing having one or more apertures so that a water level within the float housing is substantially similar to or follows that of the sea surface. The second section includes a float slidably received by the float housing and a stem carrying a magnetic element that extends from the float so as to be receivable by the armature housing. The arrangement is such that the float travels in substantially vertical direction within the float housing in response to movement of the sea surface thereby the armature housing being moved relative to the magnetic element to generate energy.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 2, 2021
    Assignee: Zspectrum Design Innovations Pty Ltd
    Inventor: Jose Luis Vazquez
  • Patent number: 10920739
    Abstract: A wave-power system configured to produce electric power is provided. The wave-power system may comprise a floating body structure, a set of blades attached to the floating body structure, a weight assembly, a bidirectional to unidirectional shaft assembly and/or a power unit. The weight assembly may comprise a plurality of weights which may rotate around a first axis of rotation as a result of floating movements of the floating body structure. Rotation of the plurality of weights may cause an input shaft of the bidirectional to unidirectional shaft assembly to rotate. An output shaft of the bidirectional to unidirectional shaft assembly may rotate in a first direction, regardless of a direction of rotation of the input shaft. Rotation of the output shaft causes the power unit to produce the electric power.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: February 16, 2021
    Inventor: Moosa Nematollahi Saein
  • Patent number: 10876514
    Abstract: The present invention related to the ocean wave energy exploiting and storing device for electricity generation. The device consists of one hollow pillar (1), the pillar has a base to install the platform (3) and a slot for the hydraulic cylinder (2). The weight-loaded type accumulator (4) is installed within the pillar; two work platform (3) and (13) installed separately which work independently on each other. The first platform (3) covers the head of the pillar above the seal level and can move up and down. The level arm (6) is equipped with the hydraulic cylinder (9 via a swivel join (10). There is a buoy (12) installed on the other end of the level arm. The second platform (13) is placed on the head of the pressing axle (5) above the first one (3).
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: December 29, 2020
    Inventor: Dinh Chinh Nguyen
  • Patent number: 10871142
    Abstract: A facility for generating electricity, including a water source and a plurality of penstocks adapted for selective flow communication with the water source for delivering water from the water source to a turbine electricity generator. An electricity distribution system is provided having a first component adapted to deliver electricity generated by the turbine electricity generator to an electric grid and an alternative second component adapted to use the electricity to power an air compressor. A compressed air storage reservoir is provided for storing air compressed by the air compressor, including an outlet for selectively delivering the compressed air to the plurality of penstocks according to a predetermined sequence for providing energy to the water contained in the penstock to propel the water from the penstock to the turbine.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: December 22, 2020
    Assignee: CARROLL HECTOR, LLC
    Inventors: Francis Norbert Hector, Jr., Juan Keith Carroll
  • Patent number: 10855159
    Abstract: A coil regeneration device comprises an electrically conductive coil including a coiled section; a double magnet system including an inner magnet disposed inside and movable within the coiled section and an outer magnet surrounding and movable with respect to the coiled section with matched directional polarity with the inner magnet, wherein the double magnet system is configured to be coupled to a dynamic foreign entity that applies a specific frequency of oscillating motion that translates into corresponding oscillating motion of the outer magnet, which imparts corresponding oscillating motion to the inner magnet, the oscillating motion of the double magnet system relative to the coiled section producing a magnetic field that induces an electrical field in the electrically conductive coil.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 1, 2020
    Inventors: John Sabah Gewarges, Shashank Reddy Goli
  • Patent number: 10851760
    Abstract: A liquid potential energy increasing device includes a first receiving trough, a second receiving trough, a liquid absorbing structure, a first magnetic component, and a second magnetic component. The liquid absorbing structure includes a main body portion and an extending portion. The extending portion conveys a liquid in the first receiving trough into the main body portion. When a sum of a weight of the main body portion and a weight of the liquid in the main body portion is greater than the magnetic attraction, the main body portion hits the second receiving trough by gravity, so that the liquid in the main body portion is at least partially released to the second receiving trough so as to increase potential energy of the liquid.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: December 1, 2020
    Inventor: Yun-Huei Wang
  • Patent number: 10844831
    Abstract: Methods, system and devices 10 for capturing wave energy are disclosed. A submersible wave energy capture device 10 comprises a tube 12 and a plurality of one-way valves 21, 31, 41. The tube 12 has a seawater inlet 11 at an upstream end 10u of the tube 12. The downstream end 10d of the tube 12 is communicable with an energy utilisation means 2 powered by seawater flow from the tube 12. The one-way valves 21, 31, 41 divide the tube 12 into a series of chambers 20, 30, 40. The chambers comprises elastic walls 22, 32, 42. These are deformable so as to alter an effective internal volume of each respective chamber 20, 30, 40. The valves 21, 31, 41, open to permit water flow within the tube 12 in a downstream direction, and close to resist water flow within the tube 12 in an upstream direction.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 24, 2020
    Assignee: FORTITUDO MARIS LTD
    Inventor: Zsolt Szarka
  • Patent number: 10844829
    Abstract: The present invention provides an oscillating water column-oscillating buoy combined wave energy converter. The present invention combines the advantages of the wave energy converters of the oscillating water column and the oscillating buoy. The conversion principles of wave energy of the oscillating water column and the oscillating buoy are on the contrary. The oscillating water column works when the structure does not move, while the oscillating buoy works when the structure substantially vibrates. The oscillating water column and the oscillating buoy are respectively operated in respective spectral ranges without affecting each other, thereby expanding the effective frequency band width of wave energy conversion. Due to the characteristic of absorbing the wave energy at all directions of 360°, the absorption efficiency of the wave energy is enhanced. Through the adoption of a fixed structure, stability of the converter can be ensured, generating efficiency is enhanced and maintenance is facilitated.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: November 24, 2020
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Dezhi Ning, Yu Zhou, Chongwei Zhang
  • Patent number: 10815961
    Abstract: The ocean wave power generator with an artificially intelligent controller is a wave power generator based on a two-body mass-spring-damper system, including a first mass, a second mass, and a linear generator coupled to the second mass. A linear actuator is coupled to the second mass, and first and second motion sensors are positioned for detecting position and speed of the first and second masses. The maximum power output of the linear generator is determined based on the position and the speed of the first mass, and an ideal position and an ideal speed of the second mass, corresponding to the maximum power output of the linear generator and the position and the speed of the first mass, are determined. The position and the speed of the second mass are adjusted using a linear actuator to match the ideal position and the ideal speed of the second mass.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: October 27, 2020
    Assignee: ABU DHABI POLYTECHNIC
    Inventor: Murad Al-Shibli
  • Patent number: 10780367
    Abstract: A track start wedge includes a housing, a ratchet gear assembly, and a locking pawl assembly. The ratchet gear assembly is disposed at least partially within the housing and includes a bar, a pinion gear at each end of the bar, and a ratchet gear between the ends of the bar. The locking pawl assembly is coupled to the housing and includes a locking pawl disengageably coupled to the ratchet gear and a spring operable to bias the locking pawl into engagement with the ratchet gear. The ratchet gear assembly is configured to rotate in unison in a first direction toward a front of the housing and a second direction toward a rear of the housing, but the locking pawl prevents rotation of the ratchet gear in the second direction when the locking pawl is engaged with the ratchet gear.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: September 22, 2020
    Assignee: EVERLAST CLIMBING INDUSTRIES, INC.
    Inventors: Charles Henry, Shane Clagett, John Florin
  • Patent number: 10731622
    Abstract: Device for converting mechanical energy from sea waves into electric energy including at least a float and two rigid rods. The rods are preferably anchored to the seabed at one end, and to the float at another end. There are also two ballasts that effect their weight towards the sea bed to keep the free ends of the rods constantly in traction and free to rotate around their hinges. The float oscillates up and down along a vertical line due to waves. There are at least two cables that connect the free ends of the rods to a transmission shaft of a generator positioned along the vertical line so that the vertical, horizontal, or rotary oscillatory motion of the float caused by the waves generates an oscillatory motion of the rods which are pivoted on their respective hinges, and thus transfers rotary motion to the transmission shaft of the generator.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 4, 2020
    Assignee: Ensea S.R.L.
    Inventors: Paolo Greco, Marcello Di Risio
  • Patent number: 10711760
    Abstract: A wave operated assembly (20) configured to be submerged in a body of water (12), the wave operated assembly (20) comprising a wave actuated member (24), a second portion and a piston assembly, pressure chamber (22) or spring coupled between the wave actuated member (24) and the second portion. The wave actuated member (24) and the fixed portion each define part of a first chamber (22) or volume comprising or configured to receive a fluid. A lower portion of the wave actuated member (24) at least partly defines a free surface (35) between the fluid within the first chamber (22) or volume and the body of water (12). The wave actuated member (24) is movable relative to the second portion. The piston assembly, pressure chamber (22) or spring is configured to apply a force on the wave actuated member (24) that works in opposition to a force on the wave actuated member (24) due to the fluid in the first chamber (22) or volume.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: July 14, 2020
    Assignee: AWS Ocean Energy Limited
    Inventor: Simon Grey
  • Patent number: 10662926
    Abstract: The present invention relates to a floating wind energy harvesting apparatus for offshore installation, comprising an elongated wind turbine body extending along a longitudinal wind turbine body axis; at least one blade attached to the wind turbine body for converting wind energy to rotation of the wind turbine body around the longitudinal wind turbine body axis; an energy converter coupled to the wind turbine body for converting the rotation of the wind turbine body to electrical energy; and a braking arrangement for controllably reducing a rotational speed of the wind turbine body. The braking arrangement comprises an inlet; an outlet; a water transporting arrangement coupled to the wind turbine body to transport water from the inlet to the outlet in response to rotation of the wind turbine body; and an access control arrangement for controllably preventing water from passing through the water transporting arrangement.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 26, 2020
    Assignee: SEATWIRL AB
    Inventor: Daniel Ehrnberg
  • Patent number: 10662918
    Abstract: Described herein are wave energy conversion systems including actuated geometry components. An example system may include at least one body portion configured to transfer wave energy to a power take off device, and at least one actuated geometry component that is connected to the at least one body portion, the at least one actuated geometry component operable to modify a geometric profile of the system.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: May 26, 2020
    Assignee: Alliance for Sustainable Energy, LLC
    Inventors: Robert Thresher, Michael Lawson, Nathan Tom, Jason Cotrell, Yi-Hsiang Yu, Alan Wright
  • Patent number: 10619620
    Abstract: Apparatus comprising a floating platform, a cylinder connected thereto, and a piston having a piston rod connected to a mooring at the sea floor. At least one penstock tube is in fluid connection at its lower end with a lower portion of the cylinder, below the piston. The penstock tube being provided along the cylinder and has an opening at the upper end arranged so that water pumped upwards in the at least one penstock tube will hit a water turbine arranged above the cylinder. The water turbine being in connection with a generator. The cylinder has an opening in an upper portion and in the lower portion thereof, provided with a one-way valve allowing water into the lower portion of the cylinder while the cylinder moves downwards, and when the platform rises, water will be refilled in the upper section through the opening.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: April 14, 2020
    Assignee: NOVIGE AB
    Inventor: Jan Skjoldhammer
  • Patent number: 10605223
    Abstract: The invention relates to a module for converting wave energy, consisting of a floating enclosure comprising a hull which communicates its pitching movement to an eccentric mass capable of rotating without backlash about a central axis, and characterized in that: —the pitching is encouraged by the particular profile of the hull and by dynamically adjustable mobile ballast, —the eccentric mass takes the form of an autonomous carriage describing an orbit along a set of circular rails by means of sets of rollers which limit friction and spread load, —an electric generator, mounted on the carriage, meshes with a set of racks of which the pitch, potentially variable, facilitates the electrical conversion, —a generator control system governs the movement of the carriage so as to optimize the extraction of energy.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: March 31, 2020
    Inventors: Felix Elefant, Alexandre Elefant
  • Patent number: 10584674
    Abstract: A hydraulic power generating apparatus which can be easily disposed in a water channel, such as a waterway or a water conducting pipe. The hydraulic power generating apparatus comprises a horizontal rotor supporting housing (4) having a rotor, a holding body (5) erected on an upper surface of the rotor supporting housing (4), a support ring (2) in which the rotor supporting housing (4) is fixed, and a power generator (11). The rotor supporting housing (4) is integrally fixed within the support ring (2) by the holding body (5). The power generator (11) is disposed on the upper part of the holding body (5) protruding from the support ring (2), and the support ring (2) is formed with attachment portions (2A, 2B) for fixing the rotor supporting housing (4) in a water channel.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: March 10, 2020
    Assignee: NTN CORPORATION
    Inventor: Masahiko Suzuki
  • Patent number: 10578075
    Abstract: Disclosed is a novel method, process, and system (hereinafter “method” or “process”) for deploying, stationing, and translocating buoyant wind- and wave-energy converters and/or other buoyant structures or devices, as well as farms of same. Also disclosed is a novel apparatus and/or machine comprising a farm of buoyant wave energy converters deployed by said method and/or configured to be deployed by said method.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 3, 2020
    Assignee: Lone Gull Holdings, Ltd.
    Inventors: Garth Alexander Sheldon-Coulson, Brian Lee Moffat
  • Patent number: 10557453
    Abstract: A wave energy converter (100) is provided which comprises a heaving buoy point absorber (122) having a surface piercing float (120) operably coupled to an adjustable reference mass (125) defining a volume for accommodating sea water therein. The surface piercing float and the adjustable reference mass are configured to move together in response to passing waves. A chamber (105) provided within the surface piercing float is in fluid communication with the sea for trapping a volume of air above an enclosed column of water. The height of the enclosed column of water varies as the point absorber reacts against its surface via an adjustable air-spring. A power take off (140) is configured for being driven by a stream of vented air in communication with the chamber as the heaving buoy point absorber reacts against a trapped volume of air. A control mechanism is configured for tuning one or more operating characteristics of the heaving buoy point absorber.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: February 11, 2020
    Inventor: William Dick
  • Patent number: 10533531
    Abstract: A turbine comprises a shaft (20), a mass (10) eccentrically mounted for rotation about shaft (20), having its center of gravity at a distance from the shaft (20) and a motion base (15). Motion base (15) rigidly supports the shaft (20), and is configured for moving the shaft (20) in any direction of at least two degrees of movement freedom, except for heave. A floating vessel-turbine (120), encloses entirely the eccentrically rotating mass (10) and the motion base (15). The turbine converts ocean wave energy into useful energy, very efficiently.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: January 14, 2020
    Inventor: Vassilios Vamvas
  • Patent number: 10526056
    Abstract: A method and apparatus for producing electricity from a combination of three sources: ocean waves, wind and solar, includes converting an upward and downward motion of a buoyant platform into a rotational motion of a shaft using a plurality of blades mounted to the shaft, the blades causing the shaft to rotate from internal wind energy as the blades move up and down within a cavity. The shaft is coupled to a generator for producing electricity. A wind turbine is mounted to the buoyant platform for converting wind energy into electricity. Further, solar panels are included, for example, mounted to the buoyant platform and/or turbine blades of the wind turbine, the solar panels also generate electricity when exposed to light.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: January 7, 2020
    Assignee: Physician Electronic Network, LLC
    Inventors: A-Hamid Hakki, Edin Dervishalidovic, Belmina Hakki, Amela Dervishalidovic
  • Patent number: 10514019
    Abstract: A floating piezoelectric assembly for generating energy from waves is provided. The assembly includes a flexible buoyant planar member, an elastic planar member coupled to the same, and two spaced-apart layers of piezoelectric elements extending on and firmly attaching to the top and bottom of the elastic planar member. The elements of a first of the layers are staggered relative to the elements of a second of the layers. The assembly includes a weighted planar member coupled to the buoyant planar member. According to a second aspect, the assembly comprises a first plurality of longitudinally spaced-apart elongate buoyant planar members, a second plurality of longitudinally spaced-apart elongate buoyant planar members, and a series of piezoelectric elements extending between the first and second plurality of buoyant planar members. The assembly further includes a plurality of elastic planar members to which respective ones of the piezoelectric elements couple.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: December 24, 2019
    Inventor: Gaynor Dayson
  • Patent number: 10508640
    Abstract: A hinge system and method for an Articulated Wave Energy Conversion System (AWECS) that provides for hinge and piston pump displacements due to multi-axis forces in allowing adjacent barges of the AWECS to pivot with respect to one another due to wave motion. The hinge system uses a plurality of parallel hinges, and axle segments, coupled between adjacent barges wherein the hinges are coupled to upright trusses positioned transversely along facing edges of each barge. Hinge bracing includes lower V-shaped struts that act as lower stops when the barges pitch up and also include upper struts that act as upper stops when the barges pitch down. The pumps are positioned in parallel. The pumps have special couplings such as ball joint couplings that permit motions other than longitudinal pump/ram motions due to multi-axis forces generated by the wave motion and thus provide omni-directional stress relief to the pumps.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: December 17, 2019
    Assignee: Murtech, Inc.
    Inventors: Robert C. Murtha, Jr., Jeffrey Cerquetti
  • Patent number: 10436171
    Abstract: The disclosed technology provides for an apparatus for translating energy through the use of mechanics, fluid displacement, gravity and buoyancy. The apparatus generally includes a base having float chambers and plunger chambers in fluid communication, a plurality of floats and plungers, and an energy transform assembly. The energy transform assembly includes a plurality of linkage mechanisms supported by the upper support structure and a plurality of linkage mechanisms supported by the lower support structure. Each linkage mechanism includes a pair of levers and an elongated transfer bar, with each lever rotatably affixed to an opposing end of the transfer bar in a manner to translate rotation of one lever with lateral movement of the transfer bar and lateral movement of the transfer bar causes rotation of the other lever.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: October 8, 2019
    Inventor: Ernie N Crouch
  • Patent number: 10423126
    Abstract: A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements of the buoy position and velocity. No knowledge of excitation force, wave measurements, nor wave prediction is needed. As an example, the feedback signal processing can be carried out using Fast Fourier Transform with Hanning windows and optimization of amplitudes and phases. Given that the output signal is decomposed into individual frequencies, the implementation of the control is very simple, yet generates energy similar to the complex conjugate control.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 24, 2019
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, Michigan Technological University
    Inventors: David G. Wilson, Rush D. Robinett, III, Ossama Abdelkhalik, Jiajun Song, Giorgio Bacelli
  • Patent number: 10415538
    Abstract: A negative-pressure wave generator has a flow-driven assembly and a power-generating assembly disposed in the sea. The flow-driven assembly has multiple Venturi tubes connected to a power generating culvert of the power-generating assembly. The power generating culvert has a generator assembly. When sea water passes, the Venturi tubes generate negative pressure to make the water flow into the flow-driven assembly from the power generating culvert. A large pressure difference is formed between outside sea water out of a turbine disposed in a front end and a chamber disposed in a rear end, and the pressure difference drives the turbine to drive the generator assembly. The transferring efficiency is high and the water in all the flow channels is in low pressure to prevent the water pipes from burst and leakage. The negative-pressure wave generator is simple in structure and solid, lowering the maintenance cost.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 17, 2019
    Inventor: Ting-Ching Wu
  • Patent number: 10415537
    Abstract: A parametric excitation dynamic model is used for a three degrees-of-freedom (3-DOF) wave energy converter. Since the heave motion is uncoupled from the pitch and surge modes, the pitch-surge equations of motion can be treated as a linear time varying system, or a linear system with parametric excitation. In such case the parametric exciting frequency can be tuned to twice the natural frequency of the system for higher energy harvesting. A parametric excited 3-DOF wave energy converter can harvest more power, for both regular and irregular waves, compared to the linear 3-DOF. For example, in a Bretschneider wave, the harvested energy in the three modes is about 3.8 times the energy harvested in the heave mode alone; while the same device produces about 3.1 times the heave mode energy when using a linear 3-DOF model.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: September 17, 2019
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, Michigan Technological University, South Dakota Board of Regents
    Inventors: Ossama Abdelkhalik, Rush D. Robinett, III, Shangyan Zou, David G. Wilson, Giorgio Bacelli, Umesh Korde, Ryan G. Coe
  • Patent number: 10393089
    Abstract: A wave energy converter includes a surface float including a non-axisymmetric profile, a reaction plate configured to be submerged below a water surface, and more than one flexible tether, each mechanically coupled to both the surface float and the reaction plate, the reaction plate having a moment of inertia in pitch and roll greater than a moment of inertia in pitch and roll of the surface float.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 27, 2019
    Assignee: Oscilla Power Inc.
    Inventors: Timothy R Mundon, Balakrishnan G Nair, Jennifer Vining
  • Patent number: 10393088
    Abstract: The invention relates to an installation having at least one caisson positioned at a given depth in a marine environment, said caisson including a rigid tank in which an oscillating plate moves, said oscillating plate being adapted to oscillate in relation to a vertical axis depending on fluctuations in the height of the water column created by the swell perpendicular to the plate, said tank and plate defining a chamber. The installation is characterized in that the chamber is sealed by a flexible hermetic pouch which is filled with a gas and deforms according to the oscillations of the oscillating plate, the pressure of the gas inside the pouch being adjusted so as to compensate for all or part of the weight of the water column perpendicular to the plate in the absence of swell.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: August 27, 2019
    Inventor: Christian Carme
  • Patent number: 10385820
    Abstract: A wave energy converter utilizes a flotation module that rises and falls with the passage of waves, a submerged tube containing a constriction which multiplies the speed of the water passing therethrough, a turbine (or other hydrokinetic apparatus) positioned so as to extract energy from the accelerated flow of water within and/or through the tube, and a submerged gas- or liquid-filled chamber housing one or more energy conversion components (e.g. generators, transformers, rectifiers, inverters). By providing a chamber in proximity to the turbine, generators can be placed in closer proximity to the turbine that turns them, and the shared shaft can be shorter than if the generators were placed in the buoy adjacent to the surface.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 20, 2019
    Inventors: Brian Lee Moffat, Garth Alexander Sheldon-Coulson
  • Patent number: 10371205
    Abstract: A tidal current energy generating device includes an outer frame (1), at least one inner frame (2), at least two hydro turbines (3), at least one center shaft (4), at least one generator (5), and at least three bearings (6). The at least one inner frame (2) is separably disposed in the outer frame (1). At least two hydro turbines (3) are located below a water surface and are disposed in one inner frame (2). At least two hydro turbines (3) are disposed coaxially and are vertical-axis hydro turbines. At least one center shaft (4) is disposed through the at least two hydro turbines (3), the axis direction of the center shaft is perpendicular to the horizontal plane, and the center shaft (4) rotates along with the rotating of the hydro turbines (3). The at least one generator (5) is located above the water surface and connected with one end of the center shaft (4). The at least three bearings are sleeved on the center shaft (4) and are located on two sides of and between the two hydro turbines (3), respectively.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: August 6, 2019
    Assignee: ZHEJIANG ZHOUSHAN LHD ENERGY DEVELOPMENT CO., LTD.
    Inventor: Dong Lin
  • Patent number: 10352288
    Abstract: An ocean wave energy generator and parabolic concentrator system includes a parabolic reflector wall, which may be in the form of a breakwater wall or the like, a generator adapted for mounting beneath a surface of a body of water, and a buoy. The buoy floats on the surface of the water and is coupled to the generator by a chain or the like. Wave-driven vertical oscillation of the buoy drives the generator to generate electrical power. The wall has opposed first and second surfaces, with the first surface thereof facing the buoy and having a parabolic contour. Because of the parabolic contour of the first surface, the first surface can reflect and focus waves to a single focus point or area. The buoy is positioned at the focus point in order to maximize power conversion.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: July 16, 2019
    Inventor: Saad KH. S. M. E. Alsahlawi
  • Patent number: 10344736
    Abstract: The invention provides optimal control of a three-degree-of-freedom wave energy converter using a pseudo-spectral control method. The three modes are the heave, pitch and surge. A dynamic model is characterized by a coupling between the pitch and surge modes, while the heave is decoupled. The heave, however, excites the pitch motion through nonlinear parametric excitation in the pitch mode. The invention can use a Fourier series as basis functions to approximate the states and the control. For the parametric excited case, a sequential quadratic programming approach can be implemented to numerically solve for the optimal control. The numerical results show that the harvested energy from three modes is greater than three times the harvested energy from the heave mode alone. Moreover, the harvested energy using a control that accounts for the parametric excitation is significantly higher than the energy harvested when neglecting this nonlinear parametric excitation term.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 9, 2019
    Assignees: National Technology & Engineering Solution of Sandia, LLC, Michigan Technological University
    Inventors: Ossama Abdelkhalik, Giorgio Bacelli, Shangyan Zou, Rush D. Robinett, III, David G. Wilson, Ryan G. Coe
  • Patent number: 10344737
    Abstract: A wave energy converter (1) has: a buoyant structure (2) which, in use, floats on water; a generator (18); a generator drive mechanism (38) on board the buoyant structure (2), the generator drive mechanism (38) having an rotational input drive shaft (20) and a rotational output drive shaft (36); a drive member (22) operably connected to the input drive shaft (20), the drive member (22) being moveable back and forth between a first position and a second position; a biasing arrangement (23, 26) for example a buoyant block acting on the drive member; and, a submerged element 4, 4? which, in use, moves below the surface of the water out of phase with the buoyant structure (2), the drive member (22) being attached by a tether (28) to the submerged element (4).
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: July 9, 2019
    Assignee: AQUA POWER TECHNOLOGIES LIMITED
    Inventor: Samuel Devon Etherington
  • Patent number: 10328996
    Abstract: A connection substation for a plurality of wave energy converters being part of a wave power station includes a transformer and a connecting device for electrically connecting input power cables to a common output cable. The connection substation has a buoyant body portion providing a buoyancy force and a fastening device for securing at least one mooring line connected to an anchor, wherein the at least one fastening device is disposed in the vicinity of the bottom end of the connection substation at a distance from an upper end of the buoyant body portion, wherein the at least one connecting device is disposed in a waterproof compartment in the connection substation, and wherein each of the plurality of input power cables are run so that at least a portion of the cable extends up to a level at least 2 meters above the design waterline of the connection substation.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: June 25, 2019
    Assignee: W4P WAVES4POWER AB
    Inventors: Filip Alm, Lennart Claesson