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35 results about "Tidal current energy" patented technology

Tidal Current Energy. Tidal current energy is the result of harnessing the power of flowing water. The gravitational interactions between the earth, sun, and moon cause ocean tides; actually, the moon has 68% control while the sun has only 32% (Elghali, 2009).

Tidal current energy collecting device based on cylinder fluid theory

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.
Owner:王晖

Flow field sensing and intelligent control system for tidal current energy water turbine array

The invention discloses a tidal current energy water turbine array flow field sensing and intelligent control system, which relates to the technical field of ocean renewable energy sources and comprises a flow field sensing module, an array state monitoring module, an intelligent control module, a data storage and analysis module and an emergency response module. The flow field sensing module comprises a dynamic calibration sub-module and a short-term prediction sub-module, and equipment such as an acoustic Doppler current meter is adopted; the array state monitoring module comprises a fault grading diagnosis sub-module; the intelligent control module comprises a wake flow avoidance sub-module, a yaw self-adaption sub-module and a power optimization sub-module, and adjustment is achieved through combination of a PLC and a PID. The data storage and analysis module adopts a mode of combining local solid-state storage and cloud, and BP and LSTM models are built in the data storage and analysis module; the emergency response module can dispose six types of scenes in a grading manner. The flow field sensing error is effectively reduced, the array generating capacity standard-reaching rate is improved, the fault response time is shortened, the operation and maintenance cost is reduced, the grid-connected stability is enhanced, and the comprehensive energy efficiency is improved.
Owner:JIANGSU OCEAN UNIV

Cavitation prediction and monitoring method for tidal current energy water turbine

The invention relates to the technical field of cavitation monitoring, in particular to a tidal current energy water turbine cavitation predicting and monitoring method which comprises the steps that S1, multi-sensor data of a tidal current energy water turbine are collected, and the multi-sensor data comprise vibration signals, ultrasonic signals and pressure signals; s2, performing frequency domain analysis on the vibration signal, and extracting an energy value of a high frequency band as a vibration characteristic value; s3, performing transmission attenuation analysis on the ultrasonic signal, and calculating an ultrasonic attenuation rate as an ultrasonic characteristic value; s4, performing frequency domain analysis on the pressure signal, and extracting a pressure pulsation amplitude at a blade passing frequency as a pressure characteristic value; s5, based on the vibration characteristic value, the ultrasonic characteristic value and the pressure characteristic value, the current cavitation state is determined through a cavitation state judgment rule; and S6, predicting the evolution trend of the cavitation state, and estimating the residual safe operation time of the water turbine under the current working condition. The cavitation recognition result is converted into a quantitative life index, and the method has engineering application value and safety guarantee capability.
Owner:崂山国家实验室 +1

Ocean wave and tidal current energy conversion system

An ocean wave and tidal current energy conversion system includes a first vessel and a second vessel, the first vessel being parallel and spaced apart from the second vessel. The first and second vessels include supports that receive cylinders that rotate from ocean waves and currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen that fills each vessel with hydrogen gas.
Owner:WADSWORTH RAY

Ribbon anti-drag bidirectional blade of horizontal shaft tidal current energy water turbine

The invention discloses a ribbon anti-drag bidirectional blade of a horizontal shaft tidal current energy water turbine, and relates to the technical field of tidal current energy utilization, the ribbon anti-drag bidirectional blade comprises a device main body, the device main body comprises a control assembly and a locking assembly connected with the control assembly, the control assembly comprises a top cover and a second connecting rod, and the top cover is provided with a plurality of first connecting rods; the device has the advantages that a motor in the linkage assembly drives a sliding block on a lead screw to move, then the third connecting rod and the fourth connecting rod are stably driven to conduct transmission, the bearing frame is pushed to drive and control fine adjustment of the surrounding main shaft, and the fine adjustment of the surrounding main shaft is achieved; the control ring is matched to drive the top cover to synchronously act through the bottom ring, the second connecting rod and the first connecting rod, finally the blades on the rotating wheel are driven to rotate around the axes of the blades, and self-adaptive adjustment of attack angles of the multiple blades is achieved.
Owner:JIANGSU OCEAN UNIV

A fish tail type tidal current power generation device

The application discloses a fish tail type tidal current energy power generation device, which solves the problem that the existing tidal current energy power generation device cannot be effectively applied to the near-shore shallow sea area, has the advantages of large sweeping area and high power generation efficiency, and has the technical scheme that the device comprises a first swing energy absorbing mechanism and a second swing energy absorbing mechanism; the first swing energy absorbing mechanism comprises a first cross arm, the end of the first cross arm is hinged to a first hydrofoil, and the first cross arm is connected with a first hydraulic pump and a first air pump; the second swing energy absorbing mechanism comprises a second cross arm, the end of the second cross arm is hinged to a second hydrofoil, and the second cross arm is connected with a second hydraulic pump and a second air pump; the first hydraulic pump is connected with a second hydraulic motor, the second hydraulic motor is connected with the second hydrofoil, and the second hydraulic motor drives the second hydrofoil to swing along the hinged position of the second cross arm; the second hydraulic pump is connected with a first hydraulic motor, the first hydraulic motor is connected with the first hydrofoil, and the first hydraulic motor drives the first hydrofoil to swing along the hinged position of the first cross arm.
Owner:王启先

Method, system and equipment for predicting capacity coefficient of horizontal axis tidal current energy power generation device

The invention discloses a capacity coefficient prediction method, system and equipment for a horizontal-axis tidal current energy power generation device, and relates to the field of field test and analysis of tidal current energy power generation devices, and the method comprises the steps: obtaining a tidal current observation data set of a target sea area and an electric power data set outputted by the horizontal-axis tidal current energy power generation device; interpolating the power flow observation data to enable the power flow observation data to be in one-to-one correspondence with the electric power data, and constructing a matching data set; performing quality control on the matched data set to obtain a target data set; performing equivalent direction and equivalent flow velocity grouping division on the target data set in sequence to obtain a prediction data set; according to the prediction data set, capacity coefficient prediction models of different equivalent directions and different equivalent flow velocity intervals are constructed, and then the current capacity coefficient of the horizontal axis tidal current energy power generation device is predicted. According to the method, the capacity coefficient of the horizontal-axis tidal current energy power generation device under any equivalent flow velocity condition in any equivalent direction can be accurately and scientifically predicted.
Owner:STATE OCEAN TECH CENT

Horizontal-axis tidal current energy mounting and docking device suitable for deep-sea low-flow-speed environment

The invention discloses a horizontal-axis tidal current energy mounting and docking device suitable for a deep-sea low-flow-speed environment. The horizontal-axis tidal current energy mounting and docking device comprises a fixed base, an AUV docking monitoring system, a locking assembly and a horizontal-axis tidal current energy unit. The fixed base is arranged in a seabed; the locking assembly comprises a connecting seat, a piston and a sealing block; the connecting seat comprises a base and a top seat; the base is arranged on the fixed base; the AUV docking monitoring system is arranged on the horizontal shaft tidal current energy unit and is used for measuring position information of the fixed base and the locking assembly; the bottom of the horizontal shaft tidal current energy unit is a sleeve with a through bottom surface; and the horizontal shaft tidal current energy unit moves the sleeve to be sleeved with the top seat according to the position information. In the scheme, the position information can guide the horizontal shaft tidal current energy unit to move the sleeve to be sleeved with the top seat; the locking assembly is linked with the sealing block through the piston, the hydraulic oil and the sealing block, when the sleeve presses the piston downwards, the sealing block can be pushed through the hydraulic oil to abut against the inner wall of the sleeve in a sealed mode, and fixed connection of the sleeve and the locking assembly is achieved.
Owner:HAIKOU SUB-BUREAU GUANGZHOU BUREAU EHV TRANSMISSION CO OF CHINA SOUTHERN POWER GRID CO +1

Wave-flow combined power generation platform and power generation method

The invention relates to the technical field of wave flow energy power generation, in particular to a wave flow combined power generation platform and a power generation method.Three cylindrical box power generation assemblies are arranged in a cylindrical box, each cylindrical box power generation assembly can generate power through wave energy, and a wave power generation assembly can generate power through wave energy; the ocean current power generation assembly can generate power through ocean current energy, the wave current coupling assembly can output wave energy and ocean current energy in a coupling mode, the lower portion of each floater upper shell is connected with a floater lower shell, and an energy storage synergistic assembly is arranged in each floater lower shell. The power generation method of the wave-flow combined power generation platform comprises the steps that the floater upper shell floats relative to the cylindrical box, and the cylindrical power generation assembly generates power; the wave power generation assembly and the ocean current power generation assembly output power to the coupling assembly to generate power. The device is higher in stability, tidal current energy and wave energy are collected, coupled, superposed and output, and the ocean unit area energy utilization rate is higher.
Owner:CHONGQING HUAYU HEAVY IND ELECTROMECHANICAL CO LTD

Wave-tidal current energy modular power generation device of marine ranch culture facility

The invention discloses a wave-tidal current energy modular power generation device of a marine ranch aquaculture facility, and belongs to the technical field of crossing of marine renewable energy sources and fishery equipment. An energy capture module in the device comprises a horizontal shaft resistance type impeller and a vertical shaft resistance type impeller. The energy synthesis and conversion module comprises a differential synthesis system and a power generator, and the differential synthesis system combines rotation inputs which are from all impellers and are inconsistent in rotation speed and / or direction into single stable rotation outputs in the same direction through a multi-stage differential mechanism and a gear set of a built-in one-way clutch so as to drive the power generator; the mounting and fixing module comprises an adjustable fixing clamping jaw and an adjustable bracket; the adjustable support comprises a fixed frame, a movable frame and a telescopic fork arm mechanism connecting the fixed frame and the movable frame, and the adjustable support can simultaneously adjust the overall off-net distance of the device and adapt to different distances between adjacent stand columns of the aquaculture facility. According to the device, wave-tidal current composite energy is modularly, efficiently and reliably captured on a culture facility for power generation, and the adaptability is high.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

A horizontal axis tidal current power generator rectifier tail wing device

This invention discloses a rectifier tail fin device for a horizontal axis tidal current generator, comprising two side-by-side torsional tail fins fixedly connected to the housing of the horizontal axis tidal current generator set; the two torsional tail fins have opposite torsional directions and are spirally twisted. This invention, through the design of two sets of opposing torsional tail fins, can achieve mutual counter-current flow. When the torsional directions of the two sets of tail fins are opposite, the vortex directions they generate are also opposite. This mutual counter-current effect helps to further consume the energy of the wake, achieve rapid dissipation, reduce energy loss, and achieve the effect of counter-current dissipation, reducing the impact of wake effects on the horizontal axis tidal current generator. This improves stability and control performance, enhances the operating efficiency, stability, and lifespan of the horizontal axis tidal current generator, and provides a better solution for the application of horizontal axis tidal current generators.
Owner:HARBIN ENG UNIV

Method for solving motion response and fluid-structure interaction deformation of oscillating hydrofoil

The invention relates to the technical field of tidal current energy utilization, and discloses an oscillating hydrofoil motion response and fluid-structure interaction deformation solving method, which comprises the steps of defining a hydrofoil motion mode and structure and fluid key parameters, and defining core characteristics of pitching given motion, free heaving motion and bending-torsion coupling deformation; establishing a heaving motion kinetic equation based on the Newton's second law, and constructing a bending-torsion coupling deformation control equation in combination with the structural mechanics principle; building a three-dimensional numerical simulation model containing block grids and boundary layer encryption design, and meeting calculation requirements through spanwise and time discretization processing; solving a fluid distribution load and a total lift force based on a Navier-Stokes equation; and a four-order Runge-Kutta method is adopted to solve the heaving motion response, and a Newmark-beta time integral method and a finite difference method are adopted to solve the bending-torsion coupling deformation. In this way, the strong coupling characteristics of hydrofoil movement and fluid-solid coupling deformation can be accurately captured, and technical support is provided for design optimization and performance improvement of the oscillating hydrofoil type tidal current energy device.
Owner:OCEAN UNIV OF CHINA

Multi-energy complementary offshore power generation structure

The invention relates to the technical field of power equipment, and discloses a multi-energy complementary offshore power generation structure, which is characterized in that a tidal current energy power generation module is additionally arranged on a pile foundation for supporting a photovoltaic power generation module, and when the output of photovoltaic power generation is suddenly reduced due to sunset or weather reasons, the tidal current energy power generation module can be used for generating tidal current energy; the tidal current energy power generation can be used as a stable supplementary or alternative power supply, so that the total output power curve of the whole system becomes more gentle, the phenomena of intermittency and volatility in the power generation process caused by single photovoltaic energy power generation in the traditional scheme are avoided, and smooth power output is realized.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD

Ocean energy comprehensive utilization floating energy island device and its operation and maintenance method

The present application relates to the field of ocean energy development, and provides a kind of ocean energy comprehensive utilization floating energy island device and its working and maintenance method, integrated arrangement large offshore wind turbine, solar power generation module, tidal current power generation module and wave power generation module, as well as hydrogen energy, synthetic fuel and biomass energy production module, realize the comprehensive utilization and complement of multiple ocean energy, and have the function of quick operation and risk avoidance maintenance, can solve the problems of poor power generation stability, low power density and small adaptation range of traditional ocean energy utilization device.
Owner:SHANGHAI JIAOTONG UNIV

A system for adjusting the level of a tidal power generator

The application provides a height adjustment system of a tidal current generator set. Through the height adjustment system of the tidal current generator set, the tidal current generator set can be quickly and stably lifted or lowered, the height adjustment efficiency of the tidal current generator set can be improved, and the maintenance efficiency of the tidal current generator set can be improved. The height adjustment system of the tidal current generator set has a simple structure and low cost. The height adjustment system of the tidal current generator set is provided with a rotating arm, so that the tidal current generator set is away from the pile foundation, the flow interference and vortex influence of the pile foundation on the water body are reduced, the vibration of the tidal current generator set is avoided, the tidal current generator set can be safely operated, and the influence on the power generation of the tidal current generator set is reduced.
Owner:CHINA THREE GORGES CORPORATION

Telescopic fairing of tidal current energy water turbine

PendingCN121952779AGood guiding effectImprove rotation efficiencyHydro energy generationReaction enginesWater wheelWater turbine
The invention discloses a telescopic flow guide cover of a tidal current energy water turbine, and relates to the technical field of water turbines.The inner flow guide container used for guiding water flow is installed in the flow guide cover, the outer wall of the inner flow guide container is connected with flow guide blades used for guiding the impact direction of the water flow, and a telescopic annular groove is formed in the upper end of a water wheel shaft; the water wheel has the advantages that water flow flows to the guide vanes in a more concentrated mode, the guide vanes can accurately guide the impact direction of the water flow, the water flow impacts the water wheel blades at a better angle and speed, the rotation efficiency of the water wheel blades and the water wheel shaft is improved, and the water wheel is more stable in rotation. The telescopic annular column is pushed by the lifting telescopic rod to move in the telescopic annular groove, the inner flow guide container, the connecting frame and the flow guide cover are driven to ascend together, and the telescopic flow guide cover can optimize the water flow guide effect by adjusting the height of the telescopic flow guide cover and the state of the flow guide blades under the condition of different water levels or different flow rates.
Owner:JIANGSU OCEAN UNIV

Tidal current energy unit array optimization method based on simulated annealing algorithm

The invention discloses a tidal current energy unit array optimization method based on a simulated annealing algorithm. The array optimization method comprises the following steps: initializing parameters and setting constraint conditions; generating and evaluating an initial layout; a simulated annealing optimization engine: randomly disturbing the position of the turbine in a continuous space to break through the limitation of a discrete grid; a Metropolis criterion is adopted, global exploration and local development are dynamically balanced, and premature convergence is avoided; an adaptive cooling strategy and an index cooling curve are applied to guarantee optimization efficiency, and stable convergence is realized; accurately modeling a wake flow field; the position of the dynamic safety constraint system is associated with the wake flow radius, dynamic influence area judgment is achieved, the safety distance is automatically expanded in a high turbulence area, and the collision risk is reduced; generating a water turbine spatial distribution diagram, and visually displaying a wake flow avoidance strategy; drawing a power-temperature hyperbolic curve, tracking an optimization process in real time, and monitoring a convergence process; and finally, the reliability of the model is confirmed through an array flow field velocity distribution diagram.
Owner:SHANDONG UNIV

A method, system and device for predicting the capacity factor of a horizontal axis tidal current energy device

The application discloses a kind of horizontal axis tidal current energy power generation device capacity coefficient prediction method, system and equipment, it is related to tidal current energy power generation device field test and analysis field, this method includes: obtaining the tidal current observation data set of target sea area and the electric power data set of horizontal axis tidal current energy power generation device output;Interpolation is carried out to tidal current observation data, so that tidal current observation data and electric power data one-to-one correspondence, construct matching data set;Matching data set is carried out quality control, obtain target data set;Target data set is sequentially grouped and divided into equivalent direction and equivalent flow velocity, obtain prediction data set;Capacity coefficient prediction model of different equivalent direction different equivalent flow velocity interval is constructed according to prediction data set, and then the current capacity coefficient of horizontal axis tidal current energy power generation device is predicted.The application can accurately and scientifically predict the capacity coefficient of horizontal axis tidal current energy power generation device under any equivalent flow velocity condition in any equivalent direction.
Owner:STATE OCEAN TECH CENT

Floating type offshore energy island networking system and capacity calculation method

The invention provides a floating type offshore energy island networking system and a capacity calculation method, and the system comprises a renewable energy power generation system, an energy storage system, an energy consumption system, an island micro-grid operation management system, and an island micro-grid hardware system. The renewable energy power generation system comprises a floating type offshore wind power unit, a floating type offshore photovoltaic unit, a floating type wave energy power generation unit and a tidal current energy power generation unit and is used for converting offshore renewable energy resources into electric energy. The energy storage system is electrically connected with the renewable energy power generation system and is used for electric energy storage and rapid power response; the energy consumption system is electrically connected with the energy storage system and the renewable energy power generation system and is used for consuming electric energy; and the island micro-grid operation management system is used for performing cooperative control on the renewable energy power generation system, the energy storage system and the energy consumption system. Energy supply is provided for the energy island through various renewable energy sources, and self-sufficiency of a small island power source and fresh water is achieved.
Owner:CRRC QIHANG NEW ENERGY TECHNOLOGY CO LTD

Whale tidal current power generation device

ActiveCN310176356STidal current energyElectrical and Electronics engineering
1. The name of the design product: whale type tidal current power generation device. 2. The use of the design product: the design product is used for sea current power generation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.
Owner:李泽宇

A multi-functional marine monitoring platform

This invention relates to the field of marine monitoring, specifically to a multifunctional marine monitoring platform, comprising a floating platform, a solar power generation device, a wind power generation device, a tidal energy generation device, and electrical equipment. The floating platform includes several floating units, each comprising a connecting frame and a buoyancy box, with the connecting frame positioned above the buoyancy box. The solar power generation device is located on one side of an energy storage device, with its bottom fixedly connected to the connecting frame. The wind power generation device is located on the other side of the energy storage device, with its bottom fixedly connected to the connecting frame. Two tidal energy generation devices are included. The bottom of the electrical equipment is fixedly connected to the connecting frame. This application achieves hybrid power generation by simultaneously combining solar, wind, and tidal energy generation on the platform through the installation of a floating platform, solar power generation device, wind power generation device, and tidal energy generation device, thereby achieving complementary power supply.
Owner:ZHEJIANG OCEAN UNIV

Ocean wave and tidal current energy conversion system

An ocean wave and tidal current energy conversion system includes a frame that has supports that receive cylinders or rotating portions that rotate from ocean or river currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen.
Owner:WADSWORTH RAY

Offshore wind and tidal current energy coupling intelligent power generation platform and control method thereof

The invention discloses an offshore wind and tidal current energy coupling intelligent power generation platform and a control method thereof. The intelligent power generation platform comprises a center bionic floating body, a top wind energy capturing unit, a left and right side auxiliary floating body, a gradient stiffness force transmission ridge, a channel embedded type tidal current energy conversion unit, a mooring system, a body nerve sensing unit and a structural state self-sensing and cooperative regulation center. Through the triple-hulled vessel type bionic layout and physical and information deep fusion of the embedded distributed optical fiber sensing and cooperative regulation and control module, the problem of insufficient stability of a traditional platform is effectively solved, and multi-energy coupling acquisition and dead-corner-free real-time monitoring and active self-adaptive regulation and control protection of the main load-bearing structure in the full life cycle are achieved.
Owner:WUHAN UNIV OF TECH

Solution method for oscillating hydrofoil motion response and fluid-structure coupling deformation

ActiveCN121598715Bflexible adjustmentTaking into account computing efficiencyDesign optimisation/simulationSpecial data processing applicationsKineticsMotion dynamics
The application relates to the technical field of tidal current energy utilization, and discloses a solution method for oscillating hydrofoil motion response and fluid-structure coupling deformation, which comprises the following steps: defining hydrofoil motion modes and key parameters of structures and fluids, and clearly defining the core features of given pitching motion, free heaving motion and bending-torsion coupling deformation; establishing a heaving motion dynamics equation based on Newton's second law, and constructing a bending-torsion coupling deformation control equation in combination with the principle of structural mechanics; building a three-dimensional numerical simulation model containing a block grid and a boundary layer encryption design, and meeting the calculation requirements through spanwise and time discretization processing; solving fluid distribution load and total lift based on the Navier-Stokes equation; solving the heaving motion response by using the fourth-order Runge-Kutta method, and solving the bending-torsion coupling deformation by using the Newmark- β time integration method and the finite difference method. In this way, the strong coupling characteristics of hydrofoil motion and fluid-structure coupling deformation can be accurately captured, thereby providing technical support for the design optimization and performance improvement of an oscillating hydrofoil type tidal current energy device.
Owner:OCEAN UNIV OF CHINA

Floating offshore hydrogen production platform

The present application relates to a kind of floating offshore hydrogen production platform, including floating foundation, generator set, hydrogen production unit and hydrogen storage unit.Floating foundation is set to annular structure, it includes the multiple foundation units that successively connect in head and tail, between two adjacent foundation units is detachably fixed connection.Generator set is arranged on foundation unit, it is used to carry out power generation using at least one of wind energy, tidal current energy, solar energy.Hydrogen production unit is arranged on foundation unit, and it is electrically connected with generator set.Hydrogen storage unit is arranged on foundation unit, and it is connected with hydrogen production unit, hydrogen storage unit is used to receive and store hydrogen prepared by hydrogen production unit.Floating foundation is made of multiple foundation units, and each foundation unit is detachably connected with each other, and each foundation unit is respectively provided with generator set, hydrogen production unit and hydrogen storage unit.Single foundation unit can independently complete energy capture, conversion, storage and output whole process, and single foundation unit can be individually disassembled and repaired when operating and maintaining, and the remaining foundation units can still operate normally, with high operating efficiency and low cost.
Owner:NAT ENERGY GRP HYDROGEN TECH CO LTD +5

Wave-flow combined energy harvesting system and working method thereof

The invention discloses a wave-flow combined energy harvesting system and a working method thereof, the wave-flow combined energy harvesting system comprises a floating body and a plurality of energy harvesting units connected to the floating body, the energy harvesting units are internally provided with vibrators, and the vibrators are in transmission connection with power generation elements; the vibrator performs oscillating motion with reciprocating height change under the action of waves and tidal current and drives the power generation element to generate power; a snorkeling adjusting mechanism is arranged on the floating body, the snorkeling adjusting mechanism can adjust the immersion depth of the floating body, the height difference between the vibrator and the water surface is changed, and the vibrator tends to respond to waves and tidal currents to the maximum extent. A plurality of vibrators are vertically distributed in each energy harvesting unit, and the adjacent vibrators in the same energy harvesting unit have a height difference. In each energy harvesting unit, at least one vibrator is arranged close to the water surface, and at least one vibrator is arranged deep into the water. The height of the oscillators in the energy harvesting units can be adjusted, so that the oscillators tend to respond to waves and tidal currents to the maximum extent, and therefore the energy harvesting efficiency of wave energy and tidal current energy is improved.
Owner:NANTONG UNIV

A method for collaborative optimization of multi-parameter coupling experiment and intelligent model of vertical axis tidal current energy turbine

The present application relates to a kind of vertical axis tidal current energy turbine multi-parameter coupling experiment and intelligent model collaborative optimization method, the method includes: based on orthogonal experimental design and response surface method to construct the multi-level interaction working condition of blade key geometric parameters, obtain power and thrust coefficient performance curve, introduce global optimization of genetic algorithm and obtain optimal geometric configuration;Using variable pitch mechanism, determine the optimal variable pitch strategy considering power improvement and load fluctuation suppression;Introduce turbulence intensity correction coefficient, represent the performance degradation law of turbine under complex inflow, construct robust prediction model;Phase-locked PIV flow field measurement is executed under different working conditions, establish the quantitative correlation model of flow field characteristics and instantaneous load fluctuation, and feedback optimal parameter combination back to experimental design.Relative to the prior art, the present application has disclosed the multi-parameter nonlinear coupling mechanism of turbine energy trapping efficiency and operating stability, provides physical basis for its optimization design and the like advantages.
Owner:SHANGHAI JIAOTONG UNIV

Method for calculating total tidal energy based on multi-source fusion data

This invention relates to the field of electrical digital data processing technology and discloses a method for calculating the total tidal energy based on multi-source fusion data. The method includes: collecting multi-source observation data and geographic topology data; mapping the data to a three-dimensional voxel grid to construct a spatiotemporal velocity tensor; calculating the rate of change of the inner product of the grid velocity vectors; adaptively refining the grid resolution using an octree structure; determining the occlusion state of the grid addressing path based on the geographic topology data; establishing anisotropic completion constraints by setting the weights to zero; removing outlier sampling points by combining the tidal harmonic constant; and calculating the total tidal energy using the filled tensor. This invention couples geographic constraints to the tensor completion logic, eliminating the passivation defects in the velocity field simulation caused by abrupt topographic changes, and ensuring the physical fidelity of tidal energy calculation in large-scale ocean areas.
Owner:TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +1

A multi-degree-of-freedom adaptive motion compensation device for connecting a floating water turbine and a carrier

PendingCN122078567ASolve the problem of six degrees of freedom motionsmall range of motionMachines/enginesEngine componentsWater turbineMulti degree of freedom
This invention belongs to the field of tidal power generation technology and relates to a multi-degree-of-freedom adaptive motion compensation device for connecting a floating turbine and a carrier. The device includes a carrier and a turbine, with a retractable hydraulic rod assembly, a turntable, and a slide rail arranged sequentially between them. The retractable hydraulic rod assembly consists of three retractable hydraulic rods arranged in an equilateral triangle. The length of the retractable hydraulic rods is adjustable. One end of each retractable hydraulic rod is connected to the semi-submersible carrier, and the other end is connected to the turntable. The turntable consists of an upper and lower part and can rotate 360 ​​degrees. The slide rail includes a slide path and a slider. The slider is connected to the bottom of the turntable and drives the turntable to slide along the slide rail. This invention improves and optimizes the mechanical connection structure between the turbine and the carrier to eliminate or reduce the swaying motion of the turbine caused by waves, thereby improving the stability and efficiency of the turbine operation, extending the service life of the turbine, and enhancing the applicability of the turbine unit under different sea conditions.
Owner:OCEAN UNIV OF CHINA