189 results about "Wave power" patented technology

A waved-powered UUV. The wave-powered UUV may comprise a nose and body. The nose may comprise a nose buttress plate and guide shaft. The body may comprise a body buttress plate having first and second clearance openings; linear-to-rotary power converter (LRPC) having a splined shaft attached to the nose buttress plate and longitudinally disposed through the first clearance opening; AC generator operably coupled to the LRPC; AC-DC converter electrically coupled to the AC generator; battery module electrically coupled to the AC-DC converter; DC motor electrically coupled to the battery module; propeller operably coupled to the DC motor; and guide shaft tube attached to the second clearance opening for receiving the guide shaft. The nose and body may be in a sliding relationship, and the wave-powered UUV may recharge its battery module when subject to wave energy by moving the nose relative to the body in a reciprocal linear motion.

This invention provides a floating wind and wave energy integrated power generation device and its control method. The floating wind and wave energy integrated power generation device includes a floating base, a wind turbine, and a wave energy generation device. The wind turbine is mounted on the floating base. The wave energy generation device is mounted on the floating base and includes an electrically connected oscillating float and a wave energy storage device. The oscillating float includes an upper ballast chamber and a lower ballast chamber. Both the upper and lower ballast chambers include multiple ballast sub-cavities. Each ballast sub-cavity has a water inlet and a water outlet. A water inlet valve is provided at the water inlet, and a water outlet valve is provided at the water outlet. The technical solution provided in this application can solve the problems of low utilization rate and poor synergy of wind and wave energy in related technologies.

This invention provides a porous wave-damping plate for aquaculture cages, specifically belonging to the field of wave-damping technology for aquaculture cages. It comprises a porous plate, wave-damping buoys, and a hollow cavity structure, forming a highly efficient energy dissipation system. The alternating openings on the surface of the porous plate allow waves to pass through. When waves impact the plate, seawater enters the hollow cavity and drives the internal wave-damping buoys to generate minute movements and collisions, thereby significantly reducing wave height and impact force. This directly protects the fish in the cage from the impact of violent water currents. The invention includes a plate body, which is detachably and fixedly installed on the outside of the cage. The plate body is a hollow plate-like structure with through holes on both the front and back sides, and the cavity of the hollow plate-like structure is filled with several wave-damping buoys for dissipating wave energy. It includes multiple plate bodies, which are spliced ​​together to form a wave-damping plate assembly. The upper end of the plate body is provided with a tenon, and the lower end of the plate body is provided with a mortise. Adjacent plates are interlocked and positioned by the tenon and mortise.

This invention provides a circular caisson resonant pool combination structure, comprising an upper circular caisson, a lower circular caisson, and a resonant pool. The upper and lower circular caissons are stacked, with the resonant pool positioned on their rear sides. The wave-facing sides of both the upper and lower circular caissons are arc-shaped curved surfaces, and the top-view outline of the upper caisson overlaps that of the lower caisson. Along the wave-facing direction, the upper and lower circular caissons are staggered with the resonant pool. This invention, through its two-layer stacked circular caisson and resonant pool combination structure, achieves superior stress performance, reduces wave reflection, and significantly weakens wave energy accumulation through scattering, maintaining a stable harbor surface. Addressing the strong penetrating characteristics of medium- and long-period waves, the resonant pool allows the internal fluid to approach a resonant state, utilizing fluid viscosity and vortex structures to dissipate wave energy, further enhancing the wave-damping effect.

A power take-off device for use in a wave energy converter unit has a power take-off hull connectable to a mooring device and connected to or connectable to the buoy, and a power extracting device connected to the power take-off hull. The power extracting device is adapted to extract power as the buoy moves with the waves, by applying a control force within a predetermined range. The power take-off hull has a first shell movable relatively to a second shell, and the first and second shells together define an inner volume. A seal is provided to separate the inner volume from water outside of the power take-off hull, and the differential pressure between water surrounding the power take-off hull and the inner volume provides a nearly constant pre-tension force from the first and second shells being pushed together by surrounding water pressure.

This prevents the impeller from rotating in reverse, ensuring that the impeller, stator unit, and rotor unit operate normally, and continuously rotating the rotor unit regardless of wave conditions to increase the power generation efficiency of the wave power generator. [Solution] The present invention provides a wave power generator comprising: a base; a first holder mounted on one end of the base; a second holder mounted on the other end of the base; a first pivot rod pivotally attached to the first holder; a second pivot rod pivotally attached to the second holder; a stator unit electrically connected to a connector provided on the first pivot rod; an impeller provided between the first pivot rod and the second pivot rod; a rotor unit provided between the impeller and the stator unit; and an ultraviolet unit provided between the first pivot rod and the second pivot rod, located below the impeller, and electrically connected to the stator unit.

This invention discloses a floating photovoltaic wave-resistant structure based on ocean wave gradient impedance matching, comprising a central buoy for mounting photovoltaic panels, wherein multiple annular plates are spaced along the height of the central buoy's sidewalls and surround it. This invention integrates offshore photovoltaic power generation and wave energy generation, and floats directly on the ocean in a completely passive manner, without requiring a rigid foundation connection to the seabed, making it economical, simple, and highly practical.

The application provides a floating breakwater integrated with a friction nanogenerator, a semi-cylindrical box-type breakwater, and a plurality of power generation units composed of an arc-shaped cavity, a PTFE friction rod and a metal electrode group in the box-type breakwater, wherein each power generation unit can supply power to an external load through an external power transmission line connected with the metal electrode group. The application has simple and stable structure, low construction cost, can collect low-frequency wave energy, can be arranged in offshore sea area, can provide effective protection for the marine platform arranged in the sea area, and can supply power for the marine platform, and can meet the power required for production and life.

This application discloses an offshore floating semi-submersible platform and an offshore power generation system. The offshore floating semi-submersible platform provided by this application includes a platform body equipped with wind turbine components and photovoltaic components to achieve wind and solar complementary power generation. A heave assembly is provided below the platform body, which includes at least two different sizes of heave plates and forms at least two moon pool structures, which together constitute a damping coupling system. The differentiated heave plates provide a graded response to broadband waves, and the moon pool structure adds additional mass and radiation damping, thereby continuously consuming wave energy, significantly reducing the platform's heave response, and improving operational stability. The photovoltaic components include fixed photovoltaic panels and telescopic photovoltaic panels. The fixed photovoltaic panels are located on the top surface of the platform body, and the telescopic photovoltaic panels can switch between a retracted state and an extended state, effectively increasing the photovoltaic power generation area and improving power generation efficiency.

An offshore floating wave energy power generation assembly for installation in a water environment, the power generation assembly comprising: a floating sphere having a slotted channel with a tapered configuration for capturing incident sea waves and transporting seawater from a first end of the channel to a second end of the channel; a turbine assembly located within an internal volume of the floating sphere, the turbine positioned at or adjacent the second end of the channel to convert kinetic energy of the captured sea waves into electrical energy.

The present application relates to a kind of multi-degree-of-freedom compound wave energy converter, belong to wave power generation technical field.The installation frame and power generation component, power generation component includes electromagnetic generator unit, nanometer friction power generation unit and piezoelectric power generation unit;Electromagnetic generator unit includes gravity pendulum and electromagnetic generator;Gravity pendulum is installed in installation frame around wave energy converter gravity center axis rotation, and one end is connected with the rotor of electromagnetic generator;Nanometer friction power generation unit includes several power generation components containing friction material, power generation component is installed in installation frame, and under the action of external force, relative motion occurs between power generation component, to generate electric energy;Piezoelectric power generation unit includes piezoelectric generator and water flow turbine;The rotor shaft of piezoelectric generator is connected with water flow turbine, and its rotor is made of piezoelectric material, and magnet is respectively arranged on rotor and stator.The present application can be fully and efficiently captured on multiple degrees of freedom to wave, energy conversion efficiency is high and the scope of application is wide.

The present application belongs to the technical field of offshore renewable energy comprehensive development, and discloses an integrated device of a floating wind turbine-oscillating buoy wave energy device. A rigid connecting rod is driven by a float to generate electricity, and a lattice design is formed on the wave-affected part of the side column to reduce the wave-affected area and load. An energy-gathering arc-shaped plate is arranged on the side surface of the side column, and is controlled by a control terminal to form reflected energy gathering by lowering, to improve the wave energy conversion efficiency, or to be lifted to reduce the wave load. The wind turbine tower is extended downward, and a plurality of heave plate structures are arranged at the bottom to improve the overall system stiffness, effectively reduce the heave motion of the overall system, increase the relative motion of the overall system and the oscillating buoy, and improve the energy conversion efficiency. The present application reduces the wave load of the floating wind turbine equipment in severe sea conditions, improves the survival ability, durability and stability of the integrated equipment, gathers waves and extracts wave energy through the oscillating buoy wave energy conversion device, and realizes the complementary and efficient development of "wind-wave" energy in space and time.

This application discloses a high-stability PTO system suitable for duck wave energy generation devices, belonging to the field of wave energy generation, and solves the problem that the spatiotemporal changes in wave conditions cause unstable energy harvesting efficiency in duck wave energy generation devices in existing technologies. In this application, the generator is driven by a wave energy conversion mechanism; the wave energy conversion mechanism includes a first conversion transmission group and a second conversion transmission group; the first conversion transmission group includes a first lead screw motor and a first commutation transmission group; the first lead screw motor is driven by the generator housing through the first commutation transmission group; the second conversion transmission group includes a second lead screw motor and a second commutation transmission group; the second lead screw motor is driven by the generator input shaft through the second commutation transmission group. The high-stability PTO system of this invention, suitable for duck wave energy generation devices, can better cope with irregular wave groups in the ocean and reduce the impact of wave condition changes on the stability of the PTO system's energy harvesting efficiency.

This invention relates to the field of marine resource assessment technology, and particularly to a method and apparatus for refined assessment of marine wave energy resources. The method includes: acquiring wind field data, water depth and topography data, and boundary wave data of the target sea area to be analyzed; constructing a nested grid wave numerical model; based on the wave numerical model, obtaining wave elements for each moment within at least one complete climatic year, including significant wave height and wave period; based on the wave elements of the inner and outer grids, obtaining the target wave energy flux density corresponding to each inner grid; and based on the target wave energy flux density, obtaining the resource utilization rate, average wave energy flux density, significant wave occurrence frequency, and resource stability of each inner grid in the target sea area, thereby conducting a refined assessment of the wave energy resources of each inner grid in the target sea area. The above technical solution enables a refined assessment of wave energy resources in the target sea area, providing technical support for wave energy development.

This invention discloses a dual-buoy wave-current energy combined power generation device, comprising a connecting rod and two identical float power generation components. Each float power generation component includes a float upper shell, a support rod, a push rod, a ratchet transmission assembly, a speed-increasing assembly, and a generator. The two float components are hinged together by the connecting rod and oscillate relative to each other with the waves, using a lever principle to drive the push rod in a reciprocating motion. The ratchet transmission assembly converts the reciprocating motion into unidirectional rotational output, which is then accelerated by two stages of speed-increasing components to drive the generator, achieving dual-buoy coupled power generation. The lower shell of the float is conical to reduce seawater resistance and contains springs and vibration energy storage blocks to recover vibrational energy and improve wave energy utilization. This device uses a helical impeller to absorb ocean current energy; the blades are subjected to force perpendicular to the helical shaft, achieving unidirectional self-starting rotation. This invention features a simple structure, high transmission efficiency, and stable output. Through wave-current energy combined power generation and the dual-buoy coupling design, it significantly improves power generation efficiency and device stability.

The present device comprises a float which is pivotally (movably) coupled at a front lower nearshore end thereof by a rigid material to the centre of a triangular lever disposed between lateral walls of the device (the active, seaward part of the lever), while at the same time a rigid passive (shoreward) part of the lever is coupled to a flexible cable that links a system of reduction gears of increasing diameter, downstream of which rotation is transmitted via a belt drive or chain drive to a shaft of an electric motor having a significantly smaller diameter, resulting in a corresponding increase in the number of revolutions of the electric motor and the generation of electrical energy.

The application discloses a floating body type wave energy coupling sea current energy seawater desalination device, and relates to the technical field of comprehensive exploitation and utilization of marine energy, comprising a ring-shaped floating body, a sea current energy utilization module arranged below the ring-shaped floating body, a disc type compression module arranged at the center of the ring-shaped floating body, and a wave energy utilization module arranged above the disc type compression module; a gearbox, a booster pump and a reverse osmosis device are installed on the ring-shaped floating body. The disc type compression module, the wave energy utilization module and the sea current energy utilization module are matched to realize seawater pressurization and simultaneous capture of wave energy and sea current energy, so that the marine energy is fully utilized for seawater desalination. The water desalination device has low cost, high efficiency, energy saving and no pollution. The three modules are integrated by using the ring-shaped floating body, the device is quickly installed, the installation cost is low compared with the existing fixed pile type, and the device can be installed according to actual use requirements.

The application relates to the technical field of wave energy power generation and relates to a wave energy power generation and energy storage simulation system based on a four-switch rectifier, which comprises the following steps: decoupling coupling components in three-phase current dq-axis components to realize effective current decoupling; adopting a voltage and current double-loop control scheme, adding a voltage outer loop on the basis of a current inner loop to overcome fluctuations caused by unstable direct-current side voltage; taking voltage error and current error as input signals of a feedback loop, and adjusting the output values of voltage and current according to output control signals; and automatically adjusting output to return to a set value when output voltage or output current deviates from the set value. The application achieves the control target of stabilizing the direct-current side voltage of the three-phase four-switch rectifier by designing a voltage and current double-loop controller.

The present invention relates to a wave energy conversion device system (1) comprising a fender (10) attached to an offshore artificial structure (M), such as a breakwater / offshore platform / barge / buoy, by a link structure (3), and a direct-drive generator attached to the aforementioned link structure (3) that converts wave motion into clean electricity.

The application provides a kind of terahertz wave power distribution measurement method based on circular sensor, belong to engineering and physical experiment measurement technical field, this method includes: obtaining the quantitative relationship of the output total power of circular sensor and the power density of measurement plane;Establish the resolution of the measured power distribution image of measurement plane, the constraint condition of measurement back-propagation error and the translation step of sensor;According to the translation step control of sensor, the translation measurement of circular sensor in measurement plane is carried out, to obtain the measurement power data set;According to the resolution, the measurement plane is discretized and the objective function is constructed, and the discrete power density of the measurement plane is obtained by solving the objective function;The measured power distribution image of measurement plane is reconstructed, and the measured power distribution image of measurement plane is output.The application has the advantages of high precision, adjustable resolution and controllable error, and is suitable for high-precision measurement scenarios of various engineering and physical experiments.

This invention discloses a combined wind and wave power generation device for offshore power generation in deep-sea typhoon-prone areas, aiming to solve the problems of insufficient dynamic stability and poor power supply continuity in existing technologies. The device includes a semi-submersible wind turbine platform and a wave power generation device. The wave power generation device is located on the jacket of the semi-submersible wind turbine platform's base and includes a lateral dominant vibration damping device, a PTO (Positioning Tolerance) device, and a first transmission rod. The lateral dominant vibration damping device is slidably connected to the jacket along its circumference and integrates an adjustable-angle water baffle. The PTO device is connected to several lateral dominant vibration damping devices via the first transmission rod, which limits the horizontal displacement range of the lateral dominant vibration damping devices. This invention maintains high resilience and efficient suppression of horizontal oscillations under extreme typhoon conditions while also ensuring power generation efficiency.

A wave energy harvesting and storage device, an energy harvesting and storage driving apparatus, and an energy harvesting and storage driving system. The wave energy harvesting and storage device comprises a bottom pile, a central column, and a floating body. The energy harvesting and storage driving apparatus comprises the wave energy harvesting and storage device and a driving machine / mechanism. The energy harvesting and storage driving system comprises an energy harvesting module, an energy storage module, and a driving module. The energy harvesting module comprises a plurality of wave energy harvesting and storage devices, the energy storage module comprises a plurality of energy collection and storage containers and a plurality of pressure stabilizing containers, and the pressure stabilizing containers are connected to the driving module by means of piping and can drive the driving module to work and output power or energy. The wave energy harvesting and storage device can effectively improve the wave energy harvesting and utilization efficiency, and can fully absorb wave energy.

The offshore hydrogen production platform disclosed in the application comprises a platform body, a wind power generation module, a photovoltaic power generation module, a wave energy power generation module and a hydrogen production and storage module, the wind power generation module, the photovoltaic power generation module and the wave energy power generation module are electrically connected with the hydrogen production and storage module; the platform body comprises at least two decks, the deck located at the top is a top deck, the deck located at the bottom is a bottom deck, the bottom deck comprises at least one, the bottom deck located at the bottom is a support deck, the photovoltaic power generation module and the wind power generation module are arranged on the top deck, and each bottom deck is provided with the hydrogen production and storage module; the platform body comprises a floating body, the floating body is connected with the support deck, and the wave energy power generation module is arranged between the floating body and the support deck. The offshore hydrogen production platform disclosed in the application integrates the wind power generation module, the photovoltaic power generation module and the wave energy power generation module in the platform body, and the modules work together and complement each other, so that the continuity and stability of power supply can be improved, and the hydrogen production efficiency can be improved.

A harbour system (1) comprises a first harbour section (100) and a second harbour section (200), wherein the first harbour section (100) has at least one berth (4) for boats, at least one lock (5) having at least one lock chamber (5a, 5b) each having two lock gates, and a hydropower plant (2), wherein the hydropower plant (1) has at least one wave power plant (2a) having a pump module (16), which is driven by wave movements of a sea section (M), and a pumped storage means (6). The second harbour section (200) of the harbour system (1) has at least one container harbour basin (7) having at least one lock (8) with two lock chambers (8a, 8b), at least one container terminal (10) having at least one container crane unit (20) and at least one further pumped storage means (6a).

This invention discloses a flexible, inertial wave energy harvesting device, comprising a floating assembly and a flexible, inertial energy harvesting unit. The flexible, inertial energy harvesting unit includes a fixed plate, vertically positioned along the Z-axis. A one-way bearing is mounted on the surface of the fixed plate. Based on the one-way bearing, two fixed pulleys are positioned downwards along the Z-axis. A rotating shaft is mounted on the one-way bearing. A chain is fitted onto the one-way bearing, with the first end of the chain connected to the end of a steel wire rope, and the end of the chain hooked to the first end of a spring. The chain engages with a sprocket. The end of the spring is fixed to the fixed plate. The steel wire rope of the flexible traction component passes sequentially around the two fixed pulleys and connects to an eccentric mass block located below the two fixed pulleys along the Z-axis. The one-way bearing is connected to a gear set. This invention improves the wave energy capture efficiency, environmental adaptability, and operational stability of the device.