A mobile offshore drilling unit includes a plurality of electric thrusters to dynamically position the drilling unit, and a microgrid electric power generation system for providing power to the plurality of electric thrusters, the microgrid electric power generation system including at least one combustion generator electrically coupled to a main electric power bus and at least one thruster electric power system, the thruster electric power system including a thruster electric power bus, an additional electric power bus connected to the thruster electric power bus via an interface device, and a circuit breaker electrically coupling the additional electric power bus to a main electric power bus for isolating the thruster electric power bus from the main electric power bus in case of loss of power on the main electric power bus.

A system for recharging power storage devices on a watercraft is disclosed herein. The system for recharging power storage devices on a watercraft includes a shell, at least one linear-channel fixedly mounted inside the shell, a turbine having at least one rotor and at least one shaft connected to the rotor, and a generator. The system for recharging power storage devices on a watercraft is useful for converting the rotational energy provided by the water flowing past the turbine rotor into electrical energy to charge a power storage device on a watercraft.

An intentional fluid manipulation apparatus (IFMA) assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube. A second thrust apparatus is located in a downstream portion of the streamtube. The second thrust apparatus imparts a second induced velocity to the local free stream flow. The second induced velocity at the location of the second thrust apparatus has a component in a direction opposite to the direction of the first induced velocity at the location of the second thrust apparatus.

The present disclosure belongs to the technical field of power generators, and in particular relates to a marine support column structure with power generation function. The support column structure solves technical problems that existing marine power generators can only generate power with single energy and have few functions and so on. The marine support column structure with power generation function includes a column body. The support column structure of the present disclosure is capable of generating power with sea wind and waves, and is further capable of serving as a guardrail.

A vehicle-based airborne wind turbine system having an aerial wing, a plurality of rotors each having a plurality of rotatable blades positioned on the aerial wing, an electrically conductive tether secured to the aerial wing and secured to a ground station positioned on a vehicle, wherein the aerial wing is adapted to receive electrical power from the vehicle that is delivered to the aerial wing through the electrically conductive tether; wherein the aerial wing is adapted to operate in a flying mode to harness wind energy to provide a first pulling force through the tether to pull the vehicle; and wherein the aerial wing is also adapted to operate in a powered flying mode wherein the rotors may be powered so that the turbine blades serve as thrust-generating propellers to provide a second pulling force through the tether to pull the vehicle.

A system for recharging power storage devices on a watercraft is disclosed herein. The system for recharging power storage devices on a watercraft includes a shell, at least one linear channel fixedly mounted inside the shell, a turbine having at least one rotor, one shaft connected to the rotor, and a generator. The system for recharging power storage devices on a watercraft is useful for converting the rotational energy provided by the water flowing past the turbine rotor into electrical energy to charge a power storage device on a watercraft.

The object of the invention is a method and an apparatus in an electric propulsion arrangement of a sailing vessel, wherein the sailing vessel has a traction device provided with an electric motor and with a propeller mechanism, the electric motor of traction device is arranged to be used, if necessary, in forward drive and reverse drive as well as during sailing as a generator for charging the accumulators of the sailing vessel. The propeller mechanism comprises a propeller hub with blades, a hollow propeller shaft fixed at its first end to the propeller hub, a shaft controlling the pitch angles of the propeller blades, said control shaft rotating inside the propeller shaft, and a servomotor rotating the control shaft. The servomotor is fixed to the second end of the propeller shaft to be rotatable along with the propeller shaft.

A submarine apparatus includes an internal bellows pipe that compresses and decompresses as the apparatus descends into and ascends within a water current. When the device is in a rising pressure process, water may condense inside a tube which may be collected in a tank. Water may also be condensed due to cold temperatures of the surrounding water and relative warmer air inside the AWS. The water may be used as a fresh source of water for drinking. Some embodiments include a generator assembly that generates electricity from a propellor move within the current. The electricity may be routed to powered components in the apparatus.

A system includes an unmanned underwater vehicle (UUV), a reaction structure configured to deploy from a body of the UUV, and one or more tendons connecting the reaction structure to the body of the UUV, wherein the reaction structure deploys at a depth below the body of the UUV. The system further includes one or more power take-out (PTO) units coupled to or between the reaction structure and the UUV. The system further includes a control unit coupled to the one or more PTO units to convert energy from waves on a surface of a body of water for use in other systems within the UUV.

A system includes an unmanned underwater vehicle (UUV), a reaction structure configured to deploy from a body of the UUV, and one or more tendons connecting the reaction structure to the body of the UUV, wherein the reaction structure deploys at a depth below the body of the UUV. The system further includes one or more power take-out (PTO) units coupled to or between the reaction structure and the UUV. The system further includes a control unit coupled to the one or more PTO units to convert energy from waves on a surface of a body of water for use in other systems within the UUV.