A device to stabilize, reduce, or control the wave or wind-induced heave (vertical), surge (lateral), or pitching (rolling) motion of a floating or semi-submerged buoyant base, raft, barge, buoy or other buoyant body such as the buoyant base of a wave energy converter or a floating wind turbine base. The device concurrently allows the floating base to self-orient or weathervane to substantially maintains its orientation with respect to the direction of oncoming waves, winds, or wind gusts. The device also facilitates maintaining the submerged depth or vertical orientation of the buoyant base relative to the still water line to compensate for tidal depth changes. The device utilizes a second substantially submerged buoyant body having a center of buoyancy and at least one tensioned seabed connection located substantially below and forward or up-sea or up-wind of the center of buoyancy of the buoyant base. A structural member, which can optionally also be buoyant or integral with the base or second submerged body, connects the submerged buoyant body with the floating base.

A method of using a bagged power generation system comprising windbags and waterbags integrated with drones and adapting drone technologies for harnessing wind and water power to produce electricity. An extremely scalable and environmentally friendly method, system, apparatus, equipment, techniques and ecosystem configured to produce renewable green energy with high productivity and efficiency.

Aspects of the disclosure include a tidal power generator comprising a first container, at least one second container pivotably coupled to the first container, a frame pivotably coupled to the first container, a first valve, associated with the first container, configured to selectively control ingress of a first volume of a first fluid into the first container, and a second valve, associated with the first container, configured to selectively control egress of a second volume of the first fluid out of the first container.

Disclosed is a novel device that converts some of the power in ocean waves into electrical power or other means of performing useful work. One or more tubes are arranged so that when the device is in position in a body of water, the tubes are oriented vertically with one end positioned proximate to and/or above the surface of the body of water on which the device floats, and with the other end positioned below the surface of that body of water. In some embodiments, through a differential restriction on the flow of air in and out of an upper end of the tube, the average height of the water inside the tube is different from the average height of the water outside the tube. In some embodiments, a hollow void inside a flotation structure of the embodiment is filled with water to contribute significant mass to the embodiment and increase the momentum associated with its vertical oscillations. Additional elements of the present disclosure include features that protect the device from damage during periods of large waves, and facilitate the powering and cooling of computers and/or other electronic equipment operated therein.

Systems and methods for capturing renewable energy are disclosed herein. An example system can include a concave receptacle configured to float on top of water, a turbine positioned centrally with the concave receptacle, a buoyancy control system having a pump and one or more vessels, a controller having a processor and memory for storing instructions, the processor executing the instructions to cause the buoyancy control system to submerge the concave receptacle under the water by filling the one or more vessels with a fluid using the pump and cause the buoyancy control system to release the fluid from the one or more vessels and allow the concave receptacle to travel upwardly so that water is directed into the turbine to produce electricity.

The present invention relates to a movable and semi-submerged power generator using a waterwheel turbine, which can easily be moved to a location where a flow of a fluid occurs, prevents movement by current of water due to being a semi-submerged type, and efficiently produces energy by means of a flow rate control and cutoff of the fluid and expansibility of the turbine. The power generator comprises: an upper structure having first and second structures including first and second balancing tanks and first and second machine rooms; a lower structure disposed on the lower portion of the upper structure and including a fluid flowing hole, a first round, and a fluid guide hole through which the fluid can flow; a turbine rotated by the movement of the fluid; an energy generation means for producing electricity by the turbine; and a fixing means. Thus, the power generator is floatable and movable on water so as to be moved to and installed in various locations. The first and second balancing tanks are filled with the fluid such that the power generator can be semi-submerged, and the height of the turbine is disposed at a position so that a shaft can be placed above the water surface such that the turbine is smoothly rotated, while preventing shaking by waving of the fluid and turning of the power generator, thereby improving energy production efficiency. Also, the fluid under the water surface is guided in a direction capable of operating the turbine while maximally preventing disruption to the flow of the fluid moving to the turbine through the first round of the lower structure, thereby improving energy production efficiency.

The apparatus described is a buoyant energy converting apparatus for converting energy obtained from renewable ocean energy sources to useful energy, comprising: a wind energy converter; a buoyant platform arranged to support the wind energy converter in a body of water having a surface and a bed; and a connection member, the connection member being positioned between the wind energy converter and the buoyant platform, the buoyant platform comprises an in-use configuration in which the buoyant platform is submerged in the body of water. In the in-use configuration the connection member protrudes through the surface of the body of water such that the wind energy converter is located substantially above the body of water. The apparatus further comprises a wave energy converter. The apparatus aims to provide a device having increased stability in stormy conditions, a more consistent supply of power and improved cost and ease of maintenance.

A submergible wave energy converter and method for using the same are described. Such a wave energy converter may be used for deep water operations. In one embodiment, the wave energy converter apparatus comprises an absorber having a body with an upper surface and a bottom surface and at least one power take-off (PTO) unit coupled to the absorber and configured to displace movement of the absorber body relative to a reference, where the power take-off unit is operable to perform motion energy conversion based on displacement of the absorber body relative to the reference in response to wave excitation, and where the power take-off unit is operable to return the absorber body from a displaced position to a predefined equilibrium position and to provide a force acting on the absorber body for energy extraction.

A wave energy conversion device whereby its structural design and positioning converts oscillating wave energy into unidirectional wave induced water flow. A judiciously placed upper closed perimeter boundary positioned on a submerged horizontally oriented surface pierced with an opening, focuses incident waves inward creating a resonant wave condition where the superposition of waves induces a predominantly downward unidirectional flow through the opening. A segmented sealed upper boundary results in the additional storage of water head due to the overtopping of waves, thus further smoothening and increasing the magnitude of the unidirectional flow. This wave energy converter can be utilized with unidirectional hydro turbines for electrical power generation.

A floating wave power generator is capable of lifting under remote control, and includes a linear generator fixed to a seabed and a floating assembly connected with the linear generator, where the floating assembly includes a lower floating body connected with a motor of the linear generator through an anchor chain, an upper floating body connected with the lower floating body through a rigid rod and floating on the sea surface, where the upper floating body is used for collecting wave energy and controlling the buoyancy of the whole floating assembly, the lower floating body is used for assisting the upper floating body to collect wave energy and controlling a distance between the whole floating assembly and the linear generator, the motor of the linear generator is used for cutting magnetic induction lines to generate electric power according to a lift-up/down movement of the whole floating assembly.