324 results about "Wave power generation" patented technology

The invention discloses a semi-submersible wave energy-wind energy integrated power generation platform and a damping regulation and control method of a damping regulation and control system of the semi-submersible wave energy-wind energy integrated power generation platform. The platform comprises a semi-submersible wind driven generator platform, a wind driven generator set, a wave energy power generation device, an energy storage system, a sea area detection system and the damping regulation and control system. The wave energy power generation devices are divided into two groups on the inner side and the outer side of the platform, each wave energy power generation device comprises a platform inner side wave energy power generation device and a platform outer side wave energy power generation device, and each wave energy power generation device comprises a swing arm floater, a universal hinge, a connecting arm and a damping adjusting module. The semi-submersible wind power generation device and the wave power generation device are combined, and offshore renewable resources are comprehensively utilized; the six-buoy design is adopted, buoyancy is dispersed, stability and safety are improved, and meanwhile space is provided for a wave power generation device; the floaters are symmetrically arranged in a hexagonal shape and carry a damping regulation and control system, and the whole structure is more easily stabilized by adjusting the damping of the floaters in all directions.

The invention discloses an intelligent optimization control method for a wave power generation device based on an improved MPC, and the method comprises the steps: collecting the wave height, period, flow velocity and device motion posture data in real time through a multi-source sensing module, constructing an exciting force prediction model based on a bidirectional long-short-term memory network, and achieving the precise prediction of the wave exciting force of n control periods in the future; prediction data and real-time feedback signals are input into an improved jellyfish search optimization algorithm, through a two-stage chaotic mapping perturbation mechanism, the convergence speed and the global optimization ability of the algorithm are remarkably improved, and finally optimal electric damping control parameters are output. Compared with a traditional MPC method, the method has the advantages that a feed-forward-feedback composite control framework is formed by fusing deep learning prediction and an intelligent optimization algorithm, so that the energy efficiency conversion efficiency of the power generation system is improved.

The invention belongs to the technical field of ocean renewable energy power generation, and particularly relates to a floating type storm power generation system control method based on knowledge distillation and a partitioning strategy. Constructing a multi-teacher model system; knowledge distillation and student model training; designing a partition control strategy; designing a target function; designing a weight adaptive mechanism; defining constraint conditions; performing upper layer optimization solution; executing a lower-layer control instruction; and dynamically feeding back a correction mechanism. The method covers all operation and survival working conditions of the combined power generation system, on one hand, the modeling difficulty and complexity of a control model are reduced, the real-time performance and reliability of prediction and control are improved, on the other hand, the zoning control strategy is proposed in combination with the stormy wave condition from the angle of engineering application of the combined system, and the control efficiency is improved. Therefore, the energy utilization efficiency and the operation stability of the floating type wind and wave combined power generation system under complex sea conditions are enhanced.

The invention discloses a wave power generation device for an island, and relates to the technical field of power generation for the island, the wave power generation device comprises a floating body and a fixed support, the floating body floats along with sea waves, an energy generation mechanism and an energy conversion mechanism are arranged on the inner side of the fixed support, the fixed support does not float along with the sea waves, and the energy generation mechanism is arranged on the top surface of the floating body; the fixed support controls the buoyancy difference value of the floating body based on the moving state of the energy generation mechanism, the energy conversion mechanism is connected with a generator through a transmission mechanism and drives the generator through the transmission mechanism, the generator is connected with a frequency-stabilized voltage-stabilized power supply through a wire, and the frequency-stabilized voltage-stabilized power supply outputs stabilized voltage electric energy. The wave power generation device has the advantages of being high in wave energy conversion efficiency, simple and compact in structure and reliable in operation.

The invention relates to the technical field of power generation equipment, in particular to a wind energy and wave energy combined power generation device for green hydrogen production. Comprising an overwater platform, a generator set arranged on the overwater platform, a floater mechanism used for capturing wave energy, an underwater fixing frame, a wind turbine and a transmission mechanism used for coupling the output of the floater mechanism and the output of the wind turbine. The floater mechanism comprises a floating ball, a lower sliding rod arranged at the lower end of the floating ball, a fixing base arranged at the upper end of the floating ball and a rack set vertically arranged on the fixing base, and the rack set penetrates through the water platform and is in sliding connection with the water platform. The transmission mechanism comprises a first input part in gear transmission connection with the rack set, a second input part in gear transmission connection with the wind turbine and a coupling part for coupling rotation of the first input part and rotation of the second input part so as to output the rotation to the generator set for power generation. According to the scheme, wave power generation and wind power generation share the same offshore platform and the same generator set, and the construction cost of the platform is effectively reduced.

The invention relates to a friction and electromagnetic combined type wave energy power generation device, and relates to the field of wave energy power generation devices. Comprising a cylindrical shell, a floating ball structure and a stress disc. The first end of the cylindrical shell is sealed, a fixed shaft is fixed to the inner axis and slidably sleeved with a sliding framework, and a composite power generation assembly is arranged in the cylindrical shell. When waves exist on the sea surface, due to the fact that the floating ball structure is subjected to buoyancy and thrust of the waves, the stress disc and the floating ball structure are subjected to opposite force, and the sliding framework can move relative to the fixed shaft, so that electromagnetic power generation and friction power generation are achieved. Even if the sea surface is flat and quiet, as long as the water body below the sea surface flows relatively and the flow velocity difference exists between the upper part and the lower part of the stress disc, buoyancy or sinking force can be generated, the sliding framework can move relative to the fixed shaft, and finally electromagnetic power generation and friction power generation are realized, so that the power generation efficiency is effectively improved.

The invention provides an ocean carrier follow-up wave power generation device which comprises a cylindrical linear generator, a linear motion sliding table, a bistable motion unit and a steering adjusting unit, the cylindrical linear generator is placed on the linear motion sliding table, and the whole motor can slide; the two sides of the upper sliding rail are fixedly connected with an upper supporting rod frame in the bistable motion unit, the lower sliding rail is connected with a bistable motion frame in the bistable motion unit, and the bistable motion unit is placed on the steering adjusting unit to form the whole structure of the power generation device. The device can be mounted on various suitable ocean carriers, and the power generation efficiency of the power generation device is improved by utilizing a bistable motion principle; by combining a cylindrical linear generator, a linear motion sliding table, a bistable motion unit with a bistable motion spring as a main tool and a steering adjusting unit, bistable motion power generation based on a cross potential energy trap is achieved, the energy capture efficiency when the wave energy frequency is low is improved, and the power generation adaptability of the device to different sea conditions is improved.

The embodiment of the invention relates to the technical field of ocean energy utilization, in particular to an ocean power generation device and method. The water immersion stand column is used for supporting the wind power generation component; the wave energy power generation component is arranged on the water immersion stand column and can move up and down along the water immersion stand column; and the culture net cage is arranged on the edge of the wave energy power generation component and can move along the edge. According to the ocean power generation device, the wave energy power generation component can generate power through vertical movement of the wave energy power generation component, pitching and yawing of the wind energy power generation component are relieved while complementation of wind energy and wave energy is achieved, and the power generation efficiency and the power generation stability are comprehensively improved. The balance weight of the aquaculture net cage can reduce the gravity center of the wind power generation component and improve the storm resistance of the ocean power generation device. The immersed stand column is not only a wind power generation component foundation, but also a kinetic energy transmission medium for wave power generation, and meanwhile provides an anchoring point for the aquaculture net cage, so that three purposes are achieved through one column.

The utility model discloses a wave power generation floating body structure which comprises a shell, a mounting support is fixedly connected to one side of the top of the shell, a conversion device is arranged in the shell and on the side, away from the mounting support, of the shell, and the conversion device comprises an inclined rod rotationally connected to the upper portion of the side, away from the mounting support, of the outer wall of the shell; and the floating block is rotationally connected to the tail end of the inclined rod. The utility model relates to the technical field of new energy power generation, in particular to a wave power generation floating body structure, which can continuously apply driving force for forward rotation of a gear even if the water surface fluctuates repeatedly through the matching of a shell and a conversion device, so that the gear can continuously rotate forwards, the power generation efficiency is ensured, and the utilization rate of energy is improved. And meanwhile, the risk that the generator is damaged is also reduced, so that the maintenance frequency of workers can be reduced, the working intensity of the workers is reduced, and convenience is brought to the use of the workers.

The invention provides a self-cooling strong-wave-resistance high-energy-capture offshore wind-light-wave combined power generation device, and belongs to the technical field of combined power generation devices, and the self-cooling strong-wave-resistance high-energy-capture offshore wind-light-wave combined power generation device comprises an offshore wind power generation device, a wave energy power generation device and an offshore light energy power generation device; a single-pile foundation of the offshore wind power generation device is buried below a seabed and vertically penetrates through the surface of seawater, and an offshore wind power generation unit and a tower drum are fixed to the single-pile foundation. The wave energy power generation device is an oscillating water column type wave energy power generation device which does heaving motion along a single-pile foundation under the action of waves, a main body is of an annular cylindrical structure, a sliding device is arranged between an inner ring and the single-pile foundation, a connecting column is arranged on the lower portion to be connected with a bottom plate, two arc-shaped airflow pipelines are arranged on the upper portion, and openings of the pipelines horizontally face a photovoltaic panel; the offshore light energy power generation device is provided with an angle adjusting mechanism, and the limitation that a traditional power generation device adopts a single offshore wind energy, wave energy or light energy power generation mode is overcome.

The invention relates to an optimal power capturing method for a wave energy power generation device of a mixed-flow type air turbine, and belongs to the field of wave energy power generation. The optimal power capturing method comprises the steps that the change condition of the average output power of the turbine under different sea conditions along with the rotating speed is tested, and the maximum average output power point of the turbine under each sea condition is obtained; fitting the maximum average output power point under each sea condition to obtain a control law of the electromagnetic power of the motor; the quadrature-axis current reference value of the stator is made to be equal to zero, and the direct-axis current reference value of the stator is calculated; calculating a stator quadrature-direct axis current error term, and establishing a positive definite Lyapunov function; deriving the Lyapunov function, substituting the Lyapunov function into a stator quadrature-direct axis current state equation, and then performing transformation according to a first stability theorem to obtain a stator quadrature-direct axis voltage control law; and generating a corresponding SVPWM (Space Vector Pulse Width Modulation) switching signal according to a stator quadrature-axis voltage control law so as to control a motor-side converter and realize control on a turbine. The wave energy capturing efficiency can be improved.

The invention discloses a multi-energy coupling intelligent power generation device integrating wind power, photovoltaic energy and wave energy, and belongs to the technical field of distributed energy systems. Aiming at the problems of high intermittency, low coupling efficiency, structural redundancy and the like of a traditional system, three power generation units are integrated through a rack: a wave power generation unit adopts a multi-directional articulated shaft-connecting rod-bevel gear pair and spur gear-rack transmission to construct a double-cooperative power generation path, and is matched with a guide rail sliding block and a reset spring; wave multi-degree-of-freedom energy is efficiently captured, and the transmission precision is ensured; the wind power generation unit decelerates and increases torque by using a box-type planetary reducer; and the photovoltaic power generation unit dynamically follows light through the double-shaft holder and the photoresistor array in combination with an MPPT (maximum power point tracking) algorithm. According to the invention, wave energy is mainly used, wind / light is coordinated and complementary, when wind power or photovoltaic power is influenced, the wave energy continuously supplies power, the traditional bottleneck is broken through, stable and efficient energy supply in water areas such as islands and oceans is realized, and compared with a traditional scheme, the wave energy utilization rate and the power supply stability are remarkably improved.

The invention relates to a multi-degree-of-freedom composite wave energy converter, and belongs to the technical field of wave power generation. Comprising a mounting frame and a power generation assembly, and the power generation assembly comprises an electromagnetic power generation unit, a nanometer friction power generation unit and a piezoelectric power generation unit; the electromagnetic power generation unit comprises a gravity pendulum and an electromagnetic generator; the gravity pendulum is rotationally mounted on the mounting frame around the gravity center axis of the wave energy converter, and one end of the gravity pendulum is connected with a rotor of the electromagnetic generator; the nanometer friction power generation unit comprises a plurality of power generation parts made of friction materials, the power generation parts are installed on the installation frame, and under the action of external force, the power generation parts move relatively to generate electric energy; the piezoelectric power generation unit comprises a piezoelectric generator and a water flow turbine; a rotor shaft of the piezoelectric generator is connected with the water flow turbine, a rotor of the piezoelectric generator is made of piezoelectric materials, and magnets are arranged on the rotor and a stator respectively. The multi-degree-of-freedom wave capturing device can comprehensively and efficiently capture waves in multiple degrees of freedom, and is high in energy conversion efficiency and wide in application range.

The invention relates to the technical field of unmanned underwater vehicle charging, in particular to an unmanned underwater vehicle charging system based on wave energy power generation, which comprises a vehicle body and a cabin cover, a dry cabin and a wet cabin which are communicated through a dynamic sealing cabin penetrating piece are arranged in the vehicle body, and an electric capstan, a stay wire type power generation device and a power storage module are arranged in the dry cabin. The electric capstan comprises a winding drum, an energy capturing unit is arranged in the wet cabin and comprises an air bag floater, an inflation assembly is arranged below the air bag floater, one end of the connecting cable is connected to the winding drum, the middle of the connecting cable is wound around the stay wire type power generation device, and the other end of the connecting cable penetrates through the dynamic sealing cabin penetrating piece to be connected with the air bag floater. The energy harvesting units for harvesting wave energy, the stay wire type power generation device and the power storage module are integrated in the unmanned underwater vehicle, the energy harvesting units can be sequentially released in the sea for multiple times to achieve in-situ autonomous charging in a task sea area, and the task duration time and the operation range of the vehicle in the deep and far sea are greatly prolonged.

The present invention relates to offshore floating wind-wave complementary power generation technology, in particular to a wind-wave complementary grid-connected optimization method based on VSG technology and feedforward control. A floating wind-wave coupled cooperative power generation system is designed, and the spatiotemporal complementary characteristics of wind energy and wave energy in the marine environment are utilized to improve the utilization rate of the anchor chain system and power transmission and transformation equipment. A nonlinear mathematical model of the power generation power of the floating wind turbine and wave power generation device is constructed. A feedforward control strategy of the floating wind-wave complementary power generation system is designed, and the wind and wave conditions in the medium and far sea areas are obtained by using a laser wind measuring radar and a laser wind measuring radar. The sea conditions near the wind-wave complementary power generation system are predicted in seconds and converted into a feedforward signal for power prediction and wind turbine state adjustment. An inverter virtual synchronous control strategy is designed, and the virtual synchronous control technology is adopted. Virtual inertia and virtual damping coefficient are introduced, and the inverter is used to realize primary frequency modulation, voltage / frequency regulation, and damped oscillation suppression functions, thereby improving the stability of the grid side.

The invention relates to a breakwater structure for wave power generation and a construction method of the breakwater structure. The breakwater structure comprises a lower barrel body, an upper caisson and a power generation device. A compartment is arranged in the upper caisson, and the power generation device is installed in the compartment. A wave inlet hole is formed in the wave facing side of the upper caisson, a cast-in-place adjusting node is arranged on the top of the upper caisson, and a wave wall, a cable pipe trench, a detachable road plate and an overhauling device are sequentially arranged above the node. The breakwater structure and the wave power generation system are integrated by adopting standard barrel type foundation factory prefabrication and floating transportation installation and combining cast-in-place joint leveling and the detachable road plates. The structure has the advantages of being convenient to construct, controllable in cost, stable in structure, convenient to maintain and the like, is suitable for wave power generation under medium and small wave conditions, and is particularly suitable for green power supply and coast protection in areas such as ports and islands.

The invention discloses a wave energy direct utilization method and device based on symmetrical wing array space synchronous conversion and energy enrichment layer optimal capture. The method takes a symmetric wing array as an energy conversion core, and cooperates through five principles: 1) constructing a large-scale stable reference; (2) recognizing and accurately deploying the symmetric wing array on a wave energy enrichment layer, namely, the center depth is 0.2 H-0. 4H below a still water surface, and the error that the device is placed in an energy depletion deepwater area is corrected in principle; 3) spatial synchronous conversion is realized, so that the array synchronously utilizes bidirectional kinetic energy of waves at any time; and 4) designing an intrinsic self-sustaining stable framework. A complete principle framework of efficient wave energy conversion is established, a self-holding high-speed wave propeller and a high-power wave power generation device can be derived, and fundamental exceeding of the prior art is achieved.

The application relates to the technical field of wave power generation, in particular to a novel box-cylinder type foundation breakwater structure, a working method and an installation method, which comprise front rows of power generation towers and rear rows of power generation towers; the front rows of power generation towers are provided with front guide pipes and horizontal front elastic units, and the rear rows of power generation towers are provided with rear guide pipes and horizontal rear elastic units. When waves surge, the waves will strike the horizontal front elastic units and the horizontal rear elastic units and surge into the front guide pipes and the rear guide pipes, that is, the front rows of power generation towers and the rear rows of power generation towers can be simultaneously impacted by the waves and can dissipate the energy of the waves for multiple times, and the front rows of power generation towers and the rear rows of power generation towers both adopt the combined mode of wave surging power generation and wave striking power generation to generate electricity. The application can improve the recycling rate of wave energy, thereby improving the power generation efficiency of the wave energy.

Provided are a wave power generation device and a wave power generation system capable of miniaturizing the wave power generation device. 【Solution means】The wave power generation device 10 includes a floating body 11, a housing 12, a first member fixed to the housing 12, a second member fixed to the floating body 11, and a power generation device that converts the relative movement between the first member and the second member into electric power. The housing 12 is arranged to be movable relative to the shore such that its height position changes due to buoyancy. The housing 12 includes a floating portion 50 in a state where a portion 51 floats from the water surface W. The value obtained by dividing the buoyancy of the floating portion 50 that increases when the water surface W rises to a predetermined height by the mass of the housing 12 is smaller than the value obtained by dividing the buoyancy of the floating body 11 that increases when the water surface W rises to the predetermined height by the mass of the floating body 11.

The invention discloses a full-coupling numerical simulation system and method for a wind and wave hybrid energy obtaining system, and relates to the field of data analysis, and the method comprises the steps: generating an aerodynamic load of a current period based on incoming flow wind speed and coupling dynamics response data of a previous simulation period; based on preset mooring system parameters and the coupling dynamics response data of the previous simulation period, generating a mooring load of the current period; in the random wave field, determining the hydrodynamic force of the floating foundation entity and the wave energy power generation entity, and generating a wave load; determining a PTO force based on the relative motion between the power generation platform and the wave energy power generation entity; and taking the aerodynamic load, the mooring load, the wave load and the PTO force as external force terms in the same time domain kinetic equation for unified solution, and obtaining a coupling kinetic response of the current simulation period. According to the full-coupling numerical simulation system and method for the wind and wave hybrid energy obtaining system, the simulation precision of the simulation system can be improved, and the overall calculation efficiency of the system is improved.

The utility model discloses a self-detachable flexible connecting piece and an array type wave power generation suspension combined piece composed of the self-detachable flexible connecting piece. At present, a suspension wave power generation single body is not provided with a special matching component for emergency rapid splicing according to needs; two conical cylinders in the self-detachable flexible connecting piece are arranged in parallel, the large-head ends of the conical cylinders are oppositely arranged, the two ends of a main flexible connecting belt are connected with the large-head ends of the two conical cylinders respectively, one end of each bottom flexible connecting belt is detachably connected with the large-head end of the corresponding conical cylinder, and the other end of each bottom flexible connecting belt is detachably connected with the large-head end of the corresponding conical cylinder. The other end of each bottom flexible connecting belt is detachably connected with the small end of the corresponding conical cylinder; one end of a middle suspension wave power generation single body of the array type wave power generation suspension combination piece is connected with an adjacent suspension wave power generation single body through a self-dismounting flexible connecting piece. And the other end of the middle suspension wave power generation single body is connected with another adjacent suspension wave power generation single body through another self-dismounting flexible connecting piece.

The invention relates to an offshore wind power and wave energy combined power generation system. Aiming at the defects of unstable offshore wind power and wave power generation and a traditional control strategy, the system is provided with four core modules. The generated power prediction module predicts power by using an LSTM model; the energy distribution control module determines a power generation device output scheme based on an MPC algorithm, and coordinates the energy storage system to maintain power balance; the energy storage system management module controls charging and discharging according to the SOC, protects the battery and stably supplies power; the system operation optimization module establishes a model, optimizes operation parameters by means of a genetic algorithm, and carries out fault diagnosis and processing at the same time. The combined power generation system can accurately predict, efficiently distribute energy, intelligently manage energy storage, optimize system operation, effectively solve the problem of unstable power generation, improve energy utilization efficiency and power supply stability, and promote development and utilization of ocean renewable energy sources.

The application discloses a self-generating buoy for comprehensively utilizing ocean current energy, and relates to the technical field of ocean monitoring.The self-generating buoy comprises a buoy main body, a solar power generation assembly, a tidal current power generation assembly, a wave power generation assembly and an energy storage component; the buoy main body floats on the water surface; the solar power generation assembly is arranged on the upper side of the buoy main body; the wave power generation assembly is arranged on the lower side of the buoy main body; the tidal current power generation assembly can rotate around a vertical axis relative to the buoy main body and can move along the vertical direction relative to the buoy main body; the wave power generation assembly can be driven by the tidal current power generation assembly in the vertical direction, so that the floating assembly can move along the vertical direction to drive the first power generation component to move and generate power; and the energy storage component can store electric energy.The self-generating buoy for comprehensively utilizing ocean current energy can comprehensively utilize solar energy, tidal current energy and wave energy, improve the self-generating efficiency, and adapt to the changes of the tidal current in multiple directions.

The invention provides an oscillating water column type wave energy power generation device and method, and relates to the technical field of new energy power generation. The characteristic that the permanent magnet synchronous generator can be converted between a power generation mode and a motor mode is utilized, the Wills turbine, the permanent magnet synchronous generator and the power storage device are combined, and the Wills turbine drives the permanent magnet synchronous generator to generate alternating current electric energy during power generation. The electrical storage device converts alternating-current electric energy generated by the permanent magnet synchronous generator into direct-current electric energy and stores the direct-current electric energy, the electrical storage device can supply power to the permanent magnet synchronous generator before power generation, the permanent magnet synchronous generator can drive the Wills turbine to rotate, and therefore the initial speed is provided for the Wills turbine; therefore, the starting process of the Wills turbine can be accelerated during subsequent power generation, the time consumed by the Wills turbine to reach the rated rotating speed after the Wills turbine is started is shortened, the Wills turbine can operate at the rated rotating speed for a longer time, and the working efficiency of the wave energy power generation device is improved.

The invention provides a mariculture-wave energy power generation device capable of achieving stabilization, efficiency improvement and adjustable oxygenation, and belongs to the technical field of mariculture engineering.The mariculture-wave energy power generation device capable of achieving stabilization, efficiency improvement and adjustable oxygenation comprises a mariculture device, a wave energy capturing device, an oxygenation device and a PTO system; the mariculture device is a large mariculture net cage and is fixed by a mooring system, and most of a main body of the mariculture device is immersed in water; the wave energy capturing device is an oscillating floater with a wide upper part and a narrow lower part, is distributed around the mariculture net cage in an annular array form, is connected to the top of a mariculture net cage frame through a transmission arm, and is used for driving the transmission arm to swing up and down under the action of waves; the oxygenation device and the PTO system are located on the top of the mariculture net cage frame and connected with the forked pressing structures at the tail ends of the transmission arms respectively. The problems that in the prior art, wave power generation, mariculture, adjustable oxygenation and wave breaking stabilization and stability maintaining cannot be achieved at the same time can be solved.

The invention relates to the technical field of wave power generation, in particular to a novel box-barrel type foundation breakwater structure and a working and mounting method thereof, and the novel box-barrel type foundation breakwater structure comprises a front-row power generation tower and a rear-row power generation tower; the front-row power generation tower is provided with a front flow guide pipe and a horizontal front elastic unit, and the rear-row power generation tower is provided with a rear flow guide pipe and a horizontal rear elastic unit. When surging, waves slap the horizontal front elastic unit and the horizontal rear elastic unit and flow into the front flow guide pipe and the rear flow guide pipe, that is, the front-row power generation tower and the rear-row power generation tower can be impacted by the waves at the same time, and energy dissipation is conducted on the waves for multiple times. And the front-row power generation tower and the rear-row power generation tower both adopt a wave inrush power generation and wave slapping power generation combined mode to generate power. The recycling rate of the wave energy can be increased, so that the power generation efficiency of the wave energy is improved.

The invention discloses a solar energy and wave energy composite power supply device of a sea-based central management platform, and belongs to the technical field of power generation equipment. The composite power supply device comprises a first platform, the first platform is connected with at least one buoyancy assembly through an anchor rope, a photovoltaic assembly is arranged above the buoyancy assembly, and a wave power generation assembly is arranged below the buoyancy assembly; the buoyancy assembly comprises two first floating plates which are oppositely arranged, a second floating plate is arranged between the bottoms of the first floating plates in a spaced mode, and an electric control box connected with the photovoltaic assembly and the wave power generation assembly is arranged above the second floating plate. The problems that in an existing sea-based platform power supply device, a single energy mode is poor in stability, a buoyancy structure is poor in wind wave resistance, and equipment is prone to being damaged by wave impact are solved.

The application relates to the technical field of wave power generation, and discloses a maximum power extraction control method of an embedded direct-drive wave power generation device, which is applied to the embedded direct-drive wave power generation device and comprises the following steps: acquiring a motion position signal of a core power generation unit, a capacitor voltage signal of a generator rectifier output end and an inductance current signal of a boost conversion circuit; determining a position error signal between a motion reference position of the core power generation unit and a detected real-time position, and adjusting to obtain a position reference voltage; collecting the capacitor voltage and the inductance current of the generator rectifier output end in real time, determining an optimal reference voltage, and adjusting to obtain an MPPT reference voltage; determining a sum value between the position reference voltage and the MPPT reference voltage, and setting the sum value as a final capacitor reference voltage of a generator output end; and calculating a duty cycle D by using a PI controller, and generating a PWM signal to realize tracking control of the maximum power. The application improves the energy conversion efficiency of the embedded direct-drive wave power generation device.

The invention provides a wave power generation flexible net cage, and relates to the technical field of deep sea cultivation, the wave power generation flexible net cage specifically comprises an in-cage floating frame, a power generation assembly and a floating frame assembly, the in-cage floating frame and the floating frame assembly are connected to form a drop-shaped outer contour, water flow can flow around more smoothly, vortex and resistance peak values are reduced, and therefore the water flow load is effectively reduced; when subjected to wave impact, the floating frame in the box can swing through a hinge point, so that wave load is unloaded, the floating frame in the box and the floating frame assembly rotate relatively, the driving end of the generator is driven to rotate, wave mechanical energy is converted into electric energy, self-power supply or energy storage is achieved, the energy self-sufficient capacity is improved, and the generator can provide damping force in the rotating process; wave impact energy is absorbed and dispersed, local stress concentration of the structure is avoided, and therefore the service life of the wave power generation net cage is prolonged, the adaptability to severe sea conditions is improved, wave mechanical energy can be converted into electric energy, the wind wave resistance effect is excellent, and the manufacturing cost is low.

The present invention relates to the technical field of wave power generation. Specifically, it relates to a device for combined water pumping and overtopping wave energy power generation, which includes a support platform, a plurality of water pumping mechanisms, a power generation system, and an anchor cable structure; the support platform includes a water guiding structure and a floating body structure. A water collecting pool is provided in the middle of the water guiding structure, and a cavity is provided inside the floating body structure; the power generation system is arranged in the cavity, and the power generation system includes a water inlet pipe, a power generation structure, and a power module; each water pumping mechanism is circumferentially distributed around the water collecting pool, and the water pumping mechanism includes a float and a water pumping structure; one end of the anchor cable structure is fixedly connected to the floating body structure; compared with the prior art overtopping wave power generation device, this device has the function of water pumping power generation for medium and small waves, and at the same time cooperates with overtopping power generation for large waves, improving the utilization rate of wave power generation.