3019results about "Sea energy generation" patented technology

Disclosed is an autonomous vessel comprising a hydrodynamic pump that converts the energy of ocean waves into electrical power when the vessel is floating adjacent to an upper surface of an ocean, and utilizes a portion of the generated electrical power produced to charge an electrical energy storage device. The vessel may submerge itself, and then propel itself beneath the water's surface, after which it may return to the surface and resume its production of electrical energy and recharge its electrical energy storage device.

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

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

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

This invention introduces a kinetic energy recovery wind-wave integrated system for offshore wind power generation. The system consists of a semi-submersible platform equipped with a fan and an internal wave energy device. The device includes a shell housing a Power Take-Off (PTO) system, featuring a permanent magnet synchronous linear motor and an active controller. The motor's stator is fixed inside the shell, while its mover is connected to a counterweight block outside the stator, linked to the shell's top via a spring. Limiters are installed at both ends of the shell to restrict the counterweight block's movement. This system utilizes the wave energy device to absorb kinetic energy, which otherwise affects wind turbine stability, and converts it into usable electrical energy via the PTO system. This enhances the stability and safety of offshore wind turbine power generation.

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 present invention relates to a wave energy power generation buoy with a variable length and angle damping plate and its control method, belonging to the technical field of wave energy power generation buoys. It includes a main floating body, an air turbine and a damping plate. The main floating body is a hollow rear-bent pipe structure. The air turbine is installed at the air outlet at the top of the rear end of the main floating body. The damping plate is installed at the rear end of the main floating body. The damping plate includes an L-shaped fixed plate, a horizontal telescopic plate, a vertical telescopic plate and an inclined movable plate. The L-shaped fixed plate is fixedly connected to the main floating body. The horizontal telescopic plate is horizontally slidably connected to the horizontal side plate of the L-shaped fixed plate. The vertical telescopic plate is vertically slidably connected to the vertical side plate of the L-shaped fixed plate. The upper and lower ends of the inclined movable plate are respectively movably connected to the vertical telescopic plate and the horizontal telescopic plate. The L-shaped fixed plate is provided with a first telescopic driving mechanism for driving the horizontal telescopic plate to move back and forth and a second telescopic driving mechanism for driving the vertical telescopic plate to move up and down. The present invention can improve the wave energy conversion efficiency.

A pressure-regulating buoyant hydrodynamic pump is disclosed that floats adjacent to a surface of a body of water over which waves tend to pass. In response to wave-induced movements of the device, water is drawn into a mouth at a lower end of an injection tube, and water is ejected from a mouth at an upper end of the injection tube. The ejected water is deposited into an interior of the hollow buoy thereby augmenting a water reservoir therein. And water flows from the water reservoir to and through a water turbine, thereby energizing a generator, power electronics, and an electrical load. A novel water-turbine effluent buffering tube, or chamber, smooths pressure variations felt across the water turbine.

The present invention relates to a wave energy power generation buoy with a variable floating drum diameter and a control method thereof, belonging to the technical field of wave energy power generation buoys, and comprising an air turbine, a rigid floating drum, a flexible floating drum and a heaving plate. The rigid floating drum is a cylinder with a fixed annular cavity, an oscillating water column channel is arranged at the center of the rigid floating drum, a ventilation port communicated with the oscillating water column channel is arranged at the top center of the rigid floating drum, the air turbine is fixedly installed at the ventilation port, a plurality of uniformly distributed vertical rods are fixedly connected to the bottom of the rigid floating drum, and the lower ends of the vertical rods are fixedly connected to the heaving plate. The flexible floating drum is a cylinder with a radially variable annular cavity, the flexible floating drum is fixedly sleeved on the outer peripheral side of the rigid floating drum, and an air inflation and extraction device for inflating or extracting air from the flexible floating drum to change its radial dimension is fixedly installed in the fixed annular cavity. The present invention improves the wave energy conversion efficiency.

A wave energy power generation device includes a plurality of up-down moving mechanisms configured to move up and down along a spiral rod under the action of waves, a mass block arranged at a lower part of the power generation device; a buoyancy barrel arranged in the middle of the power generation device, a guide rail arranged on one side of the up-down moving mechanism, and a spiral rod. Through the interaction of the up-down moving mechanism and the spiral rod, the up-down movement of waves can be converted into rotational kinetic energy, a scroll spring is used for storing energy, then the rotating speed is stabilized through an escapement mechanism, a power generation assembly accelerates energy output, and finally a generator is driven to generate power.

The present invention relates to a heaving plate wave energy power generation buoy with a variable cross-sectional area of a water column and a method thereof, belonging to the technical field of wave energy power generation buoys. It includes a buoy body, an air turbine is installed in the air outlet hole at the top of the buoy body, a central pipe located directly below the air outlet hole is arranged at the center of the bottom of the buoy body, a water column cavity communicating with the air outlet hole is formed between the outer side wall of the central pipe and the inner side wall of the buoy body, a heaving plate is fixedly connected to the bottom end of the central pipe, a plurality of uniformly distributed horizontal guide rails are fixedly connected between the upper outer side wall of the central pipe and the middle inner side wall of the buoy body, a telescopic partition plate assembly that divides the water column cavity into an outer water column cavity and an inner water column cavity is slidably installed on the plurality of horizontal guide rails, and a synchronous telescopic driving mechanism for driving the telescopic partition plate assembly to move along the horizontal guide rails is fixed at one end of the horizontal guide rail. The present invention can change the cross-sectional area ratio of the outer water column cavity and the inner water column cavity according to sea conditions, and obtain the optimal wave energy conversion efficiency.

A system and method by which energy from ocean waves is converted into hydrogen, and that hydrogen is used to manifest electrical and mechanical energies by an energy consuming device. A portion of the generated electrical power is communicated to water electrolyzers which produce oxygen and hydrogen from water as gases. At least a portion of the generated hydrogen gas is transferred to a transportation ship via a hose-carrying, remotely operated (or otherwise unmanned) vehicle, and subsequently transferred to an energy-consuming module or infrastructure, where a portion of the hydrogen is consumed in order to manifest a generation of electrical energy, a mechanical motion, and / or a chemical reaction.

The invention provides a floating type storm fusion power generation system which comprises a plurality of floating type wind driven generators, a mooring floating assembly, an anchoring foundation and a wave energy power generation device, the floating type wind driven generators are distributed around the mooring floating assembly and connected with the mooring floating assembly, and the anchoring foundation is connected with the wave energy power generation device. The multiple floating type wind driven generators and the mooring floating assemblies are connected with the corresponding anchoring foundations, and the anchoring foundations are used for being fixed to a seabed. The floating type wind driven generator comprises a wind driven generator body and a supporting floating seat, the supporting floating seat and the mooring floating assembly are each provided with a wave energy power generation device, and the wave energy power generation devices are used for making contact with seawater and converting wave energy into electric energy. The mooring system is simplified, the stability is higher, the power generation utilization rate of the ocean space is increased, and the power generation efficiency is improved.

The invention relates to the technical field of ocean engineering and renewable energy source development and utilization, and discloses an energy gathering type wave energy power generation system adapting to the water level and an application method thereof.The wave energy power generation system comprises a plurality of wave energy devices, and each wave energy device is composed of a wave energy capturing device and a wave energy power generation device; the wave energy power generation device is installed on the upper portion of the wave energy capturing device, the wave energy gathering device is formed by splicing a plurality of energy gathering plates, one side of the wave energy device is fixedly connected with a plurality of connecting rods, one ends of the connecting rods are fixed to one side of the wave energy gathering device, and the lifting adjusting mechanism is provided with a plurality of pile legs. According to the energy-gathering type wave energy power generation system adapting to the water level and the application method thereof, wave energy can be gathered again in a specific area, the input wave energy level of a wave energy device is improved, the output power and the conversion efficiency of the wave energy device are remarkably improved, and the shielding effect generated after the wave energy device is arrayed is avoided.

The invention relates to a flexible bionic sensor, a bionic whisker array unit and an underwater vehicle. The flexible bionic sensor comprises a flexible corrugated sleeve, a shell, at least four friction nanometer power generation units, a collision unit and a beard shaft. A sealing cavity is formed in the flexible corrugated sleeve, and one end of the sealing cavity is a deformable corrugated part; an opening is formed in one side of the shell, the shell is connected into the sealing cavity, and the opening faces the corrugated part; the friction nanometer power generation units are uniformly connected in the circumferential direction of the inner wall of the shell; the collision unit comprises an elastic body and a collision body. According to the underwater sensing unit, by simulating the structure of seal beards and integrating the triboelectric nano-generator in a contact separation mode, tiny flow field interference is converted into electric signals, so that various near-field information including flow velocity, attack angle and wake information of a three-dimensional flow field can be obtained at the same time, and meanwhile, the defects of an existing underwater sensing unit are overcome; the method has the advantages of short response time, high sensitivity, high signal-to-noise ratio, no environmental limitation and the like.

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

The invention discloses a hybrid power generation device with built-in swing type wave energy in a floating fan platform, and belongs to the technical field of offshore wind power generation. Comprising a semi-submerged platform, the semi-submerged platform comprises a plurality of buoys, connecting rods and mounting rods, bases are arranged at the bottoms of the buoys, the buoys are divided into upper buoys and lower buoys, wave energy devices are arranged in the buoys, a wind driven generator is arranged on the top face of the semi-submerged platform, and the buoys are connected through the slope connecting rods; and the mounting rod is connected with the buoy through a middle connecting rod and an inclined supporting rod. By the adoption of the structure, the semi-submersible platform arranged on the sea surface unstably floats along with the sea surface, and by means of up-down displacement caused by unstable floating, the swing rod in the internal wave energy device drives the hydraulic cylinder to move up and down so as to generate electricity; the inertia device is arranged for power generation, the floating displacement amount of the semi-submersible platform can be absorbed, and then the problem that the offshore wind turbine is low in power generation stability and safety is solved.

Disclosed is a floating platform integrating wave attenuation with marine energy power generation and a working method thereof, the platform includes a breakwater, a tuned damping wave energy converter, and an offshore floating wind turbine. The breakwater includes double-cylindrical-boxes and connecting bulkheads, and a moon pool area is formed in a middle of the breakwater; the offshore floating wind turbine and the tuned damping wave energy converter are both connected to the breakwater through a connecting rod. A circular groove is formed on an inner side of each of the connecting bulkheads of the breakwater. The breakwater provides the floating base and power generation environment for the offshore floating wind turbine and the tuned damping wave energy converter, and a plurality of the tuned damping wave energy converters can be disposed, and are evenly distributed beneath the offshore floating wind turbine.

The invention relates to the technical field of tidal water conservancy power generation, and provides a tidal power-based power station and a power generation method thereof.The power station comprises a first infrastructure body, a second infrastructure body, a power generation device, an adjusting device and an energy storage device; the first infrastructure body and the second infrastructure body are oppositely arranged, so that a flow guide channel for tidal water to pass through is formed between the first infrastructure body and the second infrastructure body; the power generation device is arranged in the flow guide channel and used for generating power under the action of tide water in the flow guide channel and outputting electric energy; the adjusting device is used for adjusting the flow, flow speed and flow direction of the tide water allowed to pass through the flow guide channel according to the fluctuation quantity of the tide water flow speed; the energy storage device is connected with the power generation device and used for storing electric energy output by the power generation device and outputting the electric energy externally for grid connection. Fluctuation of output electric energy of the power generation device can be effectively buffered, flexible grid connection of the output electric energy of the power generation station is achieved, and the overall operation stability of the tidal power generation station is effectively improved.

A turbine assembly includes a shaft having an axis, a single cam with a cam profile and coupled to the shaft, and at least one foil coupled to the cam and having an axis. A variable pitch mechanism is coupled to at least one of the at least one foil or the single cam and is configured to adjust a position of the at least one foil while the at least one foil simultaneously rotates about the shaft. At least one of the shaft, the variable pitch mechanism, and the at least one foil is configured to be automatically actuated in a direction parallel to the axis of the shaft.

The invention relates to the technical field of ocean new energy technology utilization, and discloses an oscillating water column type wave energy power generation system with an energy gathering structure at the bottom, which comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, a control host and a bottom energy gathering assembly, the bottom energy-gathering assembly is installed at the lower end of the air chamber and provided with a transmission mechanism, reflection and diversion of seawater at the bottom of the air chamber are achieved through the arranged horizontal bottom plate and the two symmetrically-arranged energy-gathering plates, energy gathering beyond the width of the air chamber is completed, and opening and closing of the energy-gathering plates are synchronously controlled through the transmission mechanism. And the amount of seawater flowing into the air chamber from the water inlet is changed. According to the wave energy power generation system, the oscillation intensity of the water column in the air chamber can be adjusted according to changes of sea surface waves, the speed of the generated air flow can be matched with the optimal working frequency of the turbine power generation system, the power generation efficiency of the device is guaranteed, and the oscillation water column type wave energy power generation device can be protected and prevented from being impacted by sea waves.

The invention discloses a multi-energy coordination and monitoring platform for offshore oil and gas development, which relates to the technical field of multi-energy coordination and comprises a floating platform main body, and a solar power generation array (1), a sub power generation system (2), a main power generation system (3) and a water turbine cross beam (4) which are positioned on the floating platform main body, the floating platform main body adopts a hexagonal modular structure; the solar power generation array (1) comprises a plurality of monocrystalline silicon photovoltaic panels which are uniformly distributed on the floating platform main body; the sub power generation systems (2) are positioned at six vertexes of the floating platform main body; the main power generation system (3) is located in the center of the floating type platform body. And the water turbine cross beams (4) are uniformly distributed on the periphery of the floating platform main body. By comprehensively utilizing renewable energy sources such as solar energy, wind energy, wave energy and ocean current energy, stable and sustainable energy supply can be provided for the offshore oil and gas platform, and various pain points of a traditional energy supply mode are overcome.

The invention discloses a floating type offshore power generation maintenance mechanism using wave energy, and belongs to the technical field of wave energy power generation. Comprising an offshore power generation strengthening machine cover, a transfer cover is installed on one side of the offshore power generation strengthening machine cover, a balance supporting bridge is installed on one side of the transfer cover, first wave plates are hinged to the two sides of the offshore power generation strengthening machine cover, second wave plates are hinged to the two sides of the balance supporting bridge, and a hydraulic motor is arranged in the balance supporting bridge; according to the floating type offshore power generation maintenance mechanism utilizing the wave energy, a lubricating oil agent can be automatically added into an internal transmission part in the hydraulic power generation operation, the transmission friction force is prevented from being increased in the high-rotating-speed operation state, part abrasion is reduced, and according to the magnitude of the wave energy, the transmission friction force can be adjusted according to the magnitude of the wave energy. Auxiliary speed control of equipment power generation conversion components is carried out, and the overall maintenance efficiency and use quality of the floating type offshore power generation maintenance mechanism using wave energy are improved.

The adjustable floating breakwater comprises a front floating box and a rear floating box which are fixedly connected, a water guide plate capable of rotating around a rotating shaft in the left-right direction is arranged on the upper end face of the front floating box, a plurality of water guide grooves are formed in the rear end of the water guide plate, and a power generation mechanism is arranged at the position, corresponding to the water guide grooves, of the front end of the water guide plate; the rear end of the upper end face of the front buoyancy tank is rotationally connected with a water guide arc plate, the water guide arc plate is located above the rear end of the water guide plate, and the arc-shaped concave face of the water guide arc plate is a wave facing face. A plurality of guide plates are arranged between the front buoyancy tank and the rear buoyancy tank; the first driving mechanism drives the water guide plate to rotate up and down so as to adjust the inclination angle of the water guide plate; the second driving mechanism drives the water guide arc plate to rotate front and back so as to adjust forward thrust to the front buoyancy tank, and meanwhile drives the flow guide plate to rotate left and right so as to adjust the flow guide plate to form an angle with incoming flow. The floating breakwater is convenient to adjust, long-period waves are effectively reduced, long waves are used for autonomous power generation, self-generated power is used for controlling components on the breakwater, and meanwhile the stability of the floating breakwater is improved.

The invention relates to a tide level obtaining method and system based on an OWC wave energy conversion device. The method comprises the following steps: constructing an energy loss prediction model in the air chamber; acquiring field incident wave energy, reflected wave energy, water potential energy increment, kinetic energy increment and pneumatic output energy at the current time period; inputting incident wave energy and reflected wave energy into the model to obtain predicted energy loss; and the tide level variation is solved based on the energy conservation relational expression, and the current tide level is calculated. The system comprises an energy loss prediction module, a wave energy acquisition module, a water body energy acquisition module, a pneumatic output acquisition module, an energy loss calculation module, a tide energy solving module and a tide level calculation module, which cooperatively realize the method. According to the scheme, an external tide gauge station is not needed, the local sea area tide level can be inversed in situ, at high frequency and with high precision, the method is suitable for an OWC-breakwater fusion scene, and cooperative operation of a port and ocean energy is supported.

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 a heaving plate wave energy power generation buoy with the variable cross section area of a water column and a method, and belongs to the technical field of wave energy power generation buoys.The heaving plate wave energy power generation buoy comprises a buoy body, an air turbine is installed in an air outlet hole in the top of the buoy body, and a center pipe located under the air outlet hole is arranged in the center of the bottom of the buoy body; a water column cavity communicated with the air outlet hole is formed between the outer side wall of the center pipe and the inner side wall of the buoy body, a heaving plate is fixedly connected to the bottom end of the center pipe, and a plurality of evenly-distributed horizontal guide rails are fixedly connected between the outer side wall of the upper portion of the center pipe and the inner side wall of the middle of the buoy body. A telescopic partition plate assembly dividing the water column cavity into an outer water column cavity and an inner water column cavity is installed on the horizontal guide rails in a sliding mode, and a synchronous telescopic driving mechanism used for driving the telescopic partition plate assembly to move along the horizontal guide rails is fixed to one ends of the horizontal guide rails. The proportion of the cross section area of the outer water column cavity and the cross section area of the inner water column cavity can be changed according to the sea condition, and the optimal wave energy conversion efficiency is obtained.

A combined type shared mooring system of a wave energy device array comprises a wave energy device basic module and a shared mooring module, and the wave energy device basic module comprises a buoy, a main floater, a power generation chamber cabin and a mooring chassis which are arranged in a matched mode; a buoy is arranged above the power generation chamber cabin, the main floater is fixedly connected with the power generation chamber cabin, and a closed space is formed in the main floater and can provide buoyancy for the wave energy device. The buoy reciprocates under the action of waves to drive the wave energy device in the power generation chamber cabin to generate power; the mooring chassis is in a regular hexagon shape, is formed by welding steel frames and is fixedly installed at the bottom of the power generation chamber cabin. The shared mooring module comprises a shared mooring rope, a bottom mooring rope, an anchor chain, an anchoring base station, a buoyancy adjusting oil bag, a shared mooring balancing weight and a bottom mooring balancing weight, wherein the shared mooring balancing weight and the bottom mooring balancing weight are arranged in the middle of the mooring rope.

The invention relates to a hydroelectric generator based on a bionic jellyfish and a self-powered ocean monitoring system.The hydroelectric generator comprises a bionic jellyfish structure, a mounting shell and a friction nanometer power generation assembly; the bionic jellyfish structure comprises a spherical-crown-shaped foam plate and an annular elastic piece, and the inner side of the annular elastic piece is connected with the outer side of the spherical-crown-shaped foam plate; the spherical-crown-shaped foam plate is fixedly connected with the top of the mounting shell, and the friction nanometer power generation assembly is mounted in the mounting shell; the friction nanometer power generation assembly comprises a plurality of electrode plates which are coaxial with the spherical-crown-shaped foam plate and arranged at intervals, the electrode plates comprise the first electrode plates and the second electrode plates, the first electrode plates are rigidly installed in the installation shell, and the second electrode plates are elastically installed in the installation shell; the friction nanometer power generation assembly generates power at least based on contact and separation between the first electrode plate and the second electrode plate. The problem that an existing small-scale wave energy conversion device is low in power generation efficiency is solved.

The invention provides a delay compensation control method for a double-vibrator wave energy conversion device, which comprises the following steps of: performing numerical modeling and hydrodynamic analysis on the double-vibrator wave energy conversion device, establishing a time domain motion equation of the double-vibrator wave energy conversion device, and introducing a time delay function into the time domain motion equation to simulate control signal transmission delay; simulating the execution delay of the brake by using a partial differential equation; establishing a state-space equation of the device, replacing a convolution term of the time-domain motion equation with the state-space equation, and calculating to obtain a motion state of the device; a Hamiltonian function is defined to convert a constrained optimization problem into an unconstrained optimization problem, and the Hamiltonian function is solved to obtain an optimal control criterion considering control delay so as to realize maximization of energy capture under the optimal control criterion. According to the method, the operation characteristics of a physical system are truly reflected by introducing control delay, so that the locking control method is effectively implemented in an actual physical device, and the energy capture efficiency of a wave energy conversion device and the reliability of system operation are effectively improved.