An energy conversion system includes a power takeoff system, a fin connected to the power takeoff system, and a control system on board the fin. The fin is submerged below a surface of the sea, and the fin is configured to use subsurface wave motions to extract energy.

Renewable energy systems can be deployed on water or with agricultural systems including solar energy panels and wind turbines of various types. Vertically oriented wind turbines may be combined with systems to maintain them vertical, air directors which may also have venturi effect turbines, or not. Wave energy may be captured from roll or pitch energy capture devices or even piston operated anchored systems for various embodiments. Agricultural facilities may combine various technologies to dramatically increase crop yield.

A power generation system includes a flotation assembly configured to float in water and a first harnessing assembly coupled to the flotation assembly and disposed in an airflow above the water. The first harnessing assembly is configured to harness the airflow to create a first rotational energy. The system also includes a second harnessing assembly coupled to the flotation assembly and disposed in the water. The second rotational assembly is configured to harness movement of the water to create a second rotational energy. The flotation assembly also includes a generating module to convert the first and second rotational energies into electrical energy.

A scour protective device around piles with bidirectional flow power generation. A smooth water flow channel is formed by guide walls and baffle walls. A power generation device is placed at smallest section of the channel. The piles are wrapped by smooth normal distributional surfaces, and the water flow is divided to outsides of normal distributional surfaces. The guide walls at both ends are tangent to eliminate downflow of the incident flow surface and horseshoe vortex around the piles, to avoid local scour. The tidal current is introduced into the channel to accelerate, and contraction panels are further compressed to realize hydropower generation and improve the utilization rate of tidal energy. The swing door makes hydraulic turbines rotate in the same direction when the tide rises and falls, realizing reliable bidirectional hydropower generation. The system provides efficient and environmentally friendly renewable power for bridge lighting, signal lights and vessels.

The device for conversion of wave energy into electrical energy consists of a supporting structure, the first working body, an anchor and anchor cables. The supporting structure is connected to the anchors by anchor cables, while the first working body is slidably connected to the supporting structure. The motion transformation system is firmly connected to the supporting structure and comprises rigid gears toothed with gears with rolls on one side while on the other side they are hinged to the first working body, on the other side of the gears with the rolls, rigid gears are connected at one end, while their other end is hinged to other working body. The gears with rolls are connected by shafts with a multiplier that drives the generator that further produces electricity. The device constructed in this way has the possibility of transport to the place of exploitation, because it floats stably on its own. The anchor system is transported to the place of exploitation using a transport body that also has the ability to float on its own and to submerge.

A reactive blade turbine system works vertically, horizontally, or at an angle and clockwise or counterclockwise according to blade angle and locking position and adjusts to variations in fluid flow such as changes in tidal currents to generate power more efficiently regardless of direction of fluid flow. A method for generating electrical power from a continuous fluid flow via the reactive turbine system is also provided herein.

Disclosed are an energy storage and modulating system for renewable energy off-grid power generation, and a method for modulating the same. The excess electricity from a renewable energy power generation device after the electricity consumption on a demand-side is met is output to a short-term energy storage device and/or an electric energy conversion device to be converted into a combustion medium corresponding to a mid/long term energy storage device. When the renewable energy power generation devices cannot meet the demand-side electricity consumption, the electricity can be generated by modulating the electric energy stored in the short-term energy storage device and/or burning the combustion medium corresponding to the energy storage through a gas turbine power generation system, supplementing the electric energy output from the renewable energy power generation device, thereby enabling the entire off-grid power generation system supply stable energy.

A reactive blade turbine system works vertically, horizontally, or at an angle and clockwise or counterclockwise according to blade angle and locking position and adjusts to variations in fluid flow such as changes in tidal currents to generate power more efficiently regardless of direction of fluid flow. A method for generating electrical power from a continuous fluid flow via the reactive turbine system is also provided herein.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

A device for conversion of wave energy into electrical energy consists of a supporting structure, the first working body, an anchor and anchor cables. The supporting structure is connected to the anchors by anchor cables, while the first working body is slidably connected to the supporting structure. The motion transformation system is firmly connected to the supporting structure and comprises rigid gears toothed with gears with rolls on one side while on the other side they are hinged to the first working body, on the other side of the gears with the rolls, rigid gears are connected at one end, while their other end is hinged to other working body. The gears with rolls are connected by shafts with a multiplier that drives the generator that further produces electricity.