Wave power

About: Wave power is a research topic. Over the lifetime, 2671 publications have been published within this topic receiving 41439 citations. The topic is also known as: wind wave energy & sea wave energy.

Improvements in or relating to devices for extracting energy from wave power

Abstract: The invention provides a device for extracting energy from waves on a liquid, the device having a chamber (14) with an opening for the flow of liquid into and out of the chamber to provide a quantity of the liquid which is arranged to oscillate in the chamber to provide energy from these oscillations. In order to maximise the energy absorption efficiency of the device, that portion of the device to be submerged and lie in a vertical plane aligned in the direction of propagation of the waves is of asymmetric shape, and the device is arranged to be held in a manner to inhibit movement of the device itself in responce to the waves.

Design and experiments of linear tubular generators for the Inertial Sea Wave Energy Converter

Abstract: Sea waves are one of the most interesting and well distributed renewable energy sources in the world. At the current state of the art, several devices have been proposed for wave power exploitation and some have been commercialized. The Inertial Sea Wave Energy Converter is a wave energy converter composed of a floating body slack-moored to the seabed using a gyroscope as a reference frame to produce electric power. In this work the gyroscopic wave energy converter is equipped with two linear tubular generators exploiting the reciprocating movement between the gyroscopic system and the hull to generate power. The linear generators are designed for a 3 kW device. Experimental tests on a small scale prototype are performed

Temperature Measurements in a Linear Generator and Marine Substation for Wave Power

Abstract: This paper analyzes temperature measurements acquired in the offshore operation of a wave energy converter array. The three directly driven wave energy converters have linear generators and are con ...

Application of sub-optimal control techniques to a gyroscopic Wave Energy Converter

Abstract: One of the critical points in wave power exploitation is that the energy source is highly unpredictable and Wave Energy Converters have to be opportunely tuned in order to reach high conversion efficiency. In this paper the control problems of the ISWEC (Inertial Sea Wave Energy Converter) are stated and a control scheme based on the sub-optimal stochastic control logic is presented. ISWEC is able to harvest sea waves energy exploiting the inertial effects of a flywheel. The interaction between the pitching motion of its floater and the spinning flywheel provides a reaction torque which can be exploited to drive an electrical PTO. The optimal control logic results in tuning the floater dynamics to the incoming waves in order to maximize the power transfer from the waves to the floater. In ISWEC the hull dynamics is governed and controlled by the gyroscopic torque. The control scheme here presented has been tested using real waves records acquired at the deployment location in Pantelleria Island, which is one of the most energetic sites of the Mediterranean Sea