A floating wind power generation device comprises: a main buoyant body which has buoyancy and a space portion provided in the center; an auxiliary buoyant body which has buoyancy and is connected to the main buoyancy and is connected to the main buoyant body by being inserted into the space portion of the main buoyant body; a plurality of wind power generators which are vertically provided on top of the auxiliary buoyant body and generate power; a location control means which is connected to the main buoyant body and controls the location of the main buoyant body; an oscillation inhibiting means which is connected to the main buoyant body and enables the main buoyant body to maintain an equilibrium state by absorbing the sea waves; and a dock connection unit which is connected to the main buoyant body and enables a ship to lie at anchor on the sea.

This disclosure provides improved nautical craft that can travel and navigate on their own. A hybrid vessel is described that converts wave motion to locomotive thrust by mechanical means, and also converts wave motion to electrical power for storage in a battery. The electrical power can then be tapped to provide locomotive power during periods where wave motion is inadequate and during deployment. The electrical power can also be tapped to even out the undulating thrust that is created when locomotion of the vessel is powered by wave motion alone.

A wave electricity generator system includes a water craft, a reinforcement beam mounted to a bottom of the watercraft, a power generating unit and a leverage assembly. The leverage assembly includes a connection unit disposed on the watercraft, and a lever 62 connected to the power generating unit and the connection unit. The connection unit includes a rope retaining seat, a rope and a protective pad. The rope retaining seat is disposed above the watercraft and connected to the lever. The rope is disposed around the watercraft, threads through the reinforcement beam, and is connected to the rope retaining seat. The protective pad is disposed between the reinforcement beam and the rope.

A wind-energy-power-generating device is disclosed for flotation on a body of water. The device includes a turbine assembly having rotor blades rotating about a rotation axis for harnessing kinetic energy from an airflow. The device includes a cowl at least partially surrounding said turbine assembly and defining an airflow passageway between a cowl inlet and outlet, having an inlet and outlet axis, respectively. The inlet and outlet axis intersect at a redirect angle. The device includes a base platform adapted to support the turbine assembly and cowl on the water. The cowl is rotatably mounted on the base platform such that it is rotatable around the turbine assembly to self-align with a wind direction. Stabilising arms extend from the base platform and are spaced circumferentially around a platform axis, to stabilise it on the water. A wind-energy-power-generating device secured to the ground or other fixed non-floating structure is also described.

A wave energy conversion system has a float and a power generation drum with a drum housing rotationally attached to the float by a shaft attachment. The shaft attachment allows a rotational movement of the drum housing and the float relative to each other. The drum housing holds a cable reel with a cable having a first end part connected to the cable reel and a second end part, where the cable reel is an integral part of or connected to the drum housing to rotate with the drum housing. The float can be positioned in the sea by having the second end part of the cable attached to a submerged structure or to the sea bed. When the float is positioned in the sea, the float may be moved by the waves, which movements cause a rotational movement of the drum housing with electric power being generated.

The present invention relates to the utilization of wave energy and its conversion into operating motion of an electrical energy generating system. The system for generation of electrical energy through the conversion of aquatic wave motion includes floating bodies and a constant rotation mechanism, which converts the two-way linear motion of an inflexible transmission shaft or a flexible transmission shafts into one-way rotation of an output shaft of the constant rotation mechanism. This mechanism allows utilization of wave energy in two directions caused by the rise and fall of waves. The output shaft of the constant rotation mechanism is coupled to a force multiplier that is further coupled to a generator which generates electrical energy. Constant rotation mechanism can be driven by inflexible transmission shaft pivotally coupled to the floating bodies at one end, and the other end to an input gear of the constant rotation mechanism. Depending on the height of the wave and the wavelength, various constructions of floating bodies are used. Certain floating bodies are designed for the waves of a smaller amplitude and smaller wavelength, while other floating bodies are designed for bigger amplitude and bigger wavelength.

A method and system are disclosed which provides for power generation and storage from oceanic wave motion which utilize: a buoy, a mechanism to convert multidirectional motion of the buoy to unidirectional motion and using said unidirectional motion to lift an underwater body to store energy as gravitational potential energy, and then releasing said body to convert the gravitational potential energy to electricity.

(EN) This invention relates to method and apparatus for extracting energy from water waves to generate electric power. The wave energy converter uses sea wave oscillations, from a land-based position. It understood a land-based power take off apparatus (3) that is oscillated by waves conveyed to it by canal or tunnel. The canal has a funnel shaped intake (1) at the coastline, a wave control gate (9) positioned near the intake and a power take off apparatus (3) positioned inland across the canal with a float (8) that works pumping cylinders (7) that pump hydraulic fluid to turn an impulse turbine (5) coupled to an electricity generator to generate electricity. The canal depth is predetermined to float the float, of the power take off apparatus (3), at all tide levels.

A wind-energy-power-generating device is disclosed for flotation on a body of water. The device includes a turbine assembly having rotor blades rotating about a rotation axis for harnessing kinetic energy from an airflow. The device includes a cowl at least partially surrounding said turbine assembly and defining an airflow passageway between a cowl inlet and outlet, having an inlet and outlet axis, respectively. The inlet and outlet axis intersect at a redirect angle. The device includes a base platform adapted to support the turbine assembly and cowl on the water. The cowl is rotatably mounted on the base platform such that it is rotatable around the turbine assembly to self-align with a wind direction. Stabilising arms extend from the base platform and are spaced circumferentially around a platform axis, to stabilise it on the water. A wind-energy-power-generating device secured to the ground or other fixed non-floating structure is also described.

A multi-axial wave energy conversion device includes a main body and a plurality of permanent magnet generating assemblies. Each permanent magnet generating assembly includes at least one permanent magnet generator, an arm and a driving component. The at least one permanent magnet generator includes a stator structure and a rotor structure capable of rotating or swinging relative to the stator structure. The at least one permanent magnet generator is disposed or coupled between the main body and the arm or disposed or coupled between the arm and the driving component, so that the rotor structure is driven to rotate or swing relative to the stator structure when the arm moves relative to the main body or the driving component moves relative to the arm.