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- Martinelli et al.
This paper investigates on a Wave Energy Converter (WEC) named Energy & Protection, 4th generation (EP4). The WEC couples the energy harvesting function with the purpose of protecting the coast from erosion. It is formed by a flap rolling with a single degree of freedom around a lower hinge. Small-scale tests were carried out in the wave flume of the maritime group of Padua University…
- Goldschmidt et al.
A marine hydrokinetic (MHK) cycloturbine is a renewable electric power generation system used in rivers or tidal environments to address the need for electricity in remote regions. MHK cycloturbines have hydrofoils oriented perpendicular to the flow in a paddlewheel configuration, and use lift generated from these foils to produce power. Due to the high cost associated with its operation and…
- Riddle
In recent decades, the push for reliable renewable energy sources has led researchers to explore an ever-expanding array of novel devices capable of harvesting such energy. Of the current available renewable energy sources, marine energy is one of the least-utilized categories with wave energy being the least common. However, given their high amount of energy extraction potential, wave energy…
- Watabe and Gunawardane
Pendulor is a moving body type Wave Power Converter. It can do an efficient power conversion though; its survivability hasn’t been enough in the stormy sea operation. The authors invented a new Pendulor which can treat the shock load safely by different way during the storm. The new Pendulor uses a hybrid piston pump as a component of the HST (Hydro-Static Transmission) for the conversion.…
- Cronin et al.
Ocean Renewable Power Company, Inc. (ORPC) recently completed an EU Horizon 2020 funded project to develop and test a “wet-gap” generator for use with their tidal and river energy converters. This wet-gap system is designed for a normal operating condition of a seawater flooded electrical generator which would typically be air or oil filled. This development removes the need for insulating oil…
- Choiniere et al.
In order to improve their long-term viability, wave energy converters (WECs) need to be able to shed loads when a threshold wave condition is exceeded. As shown by Tom et al. (2016) [1], provision of adjustable flaps within the body of an oscillating surge wave energy converter (OSWEC) allows wave energy to pass through the device. A control system may then be able to open and close the flaps…
- Choiniere and Thiagarajan
This study investigates the performance of an oscillating surge wave energy converter (OSWEC) that utilizes adjustable geometry as a means of controlling the hydrodynamic coefficients, a concept originally proposed by the National Renewable Energy Laboratory. The body of the device is a bottom-hinged buoyant rectangular paddle with five horizontal flaps spanning the interior of the frame. The…
- Cornett et al.
The potential for dangerous interactions with floating debris is a leading consideration when evaluating potential sites for deployment of hydrokinetic power systems, yet to date, relatively little research effort has been directed towards developing and proving effective devices and systems for protecting turbines from floating debris.
This paper presents and discusses results from a…
- Weinstein et al.
Principle Power Inc. and National Renewable Energy Lab (NREL) have completed a contract to assess the technical and economic feasibility of integrating wave energy converters into the WindFloat, resulting in a new concept called the WindWaveFloat (WWF). The concentration of several devices on one platform could offer a potential for both economic and operational advantages. Wind and wave…
- Mi et al.
Bottom-hinged oscillating surge wave energy converters have been proposed in literature to extract energy from the surge wave motions. This study investigates a dual-flap out-of-phase floating oscillating surge wave energy converter (FOSWEC) for deep water deployment where the wave power density is larger and the WECs are less visible. The proposed FOSWEC consists of a floating platform and…
- Carandell et al.
Wave Energy Converters (WECs) are an ideal solution for expanding the autonomy of surface sensor platforms such as oceanic drifters. To extract the maximum amount of energy from these fast-varying sources, a fast maximum power point tracking (MPPT) technique is required. Previous studies have examined power management units (PMU) with fast MPPT circuits, but none of them have demonstrated…
- Lust et al.
Testing of a 1:6 scale model of an H-Darrieus cross-flowhydrokineticturbine (U.S. Department of Energy’s Reference Model 2 River Current Turbine) was conducted in the largetowing tankfacility at the United States Naval Academy. Tests were conducted in current only conditions at a range of diameter-basedReynolds numbersand at several turbine depths. Reynolds number independence was observed at…
- Mi et al.
Powering desalination processes with renewable energy is a promising solution to address the global issue of water shortage with minimum carbon footprint and environmental impact. We experimentally investigate a sustainable reverse osmosis (RO) desalination system directly powered by wave energy. In this system, seawater is pressurized and pumped to a RO desalination module via a piston pump…
- McMorris
Having a reliable supply of fresh water is a problem that affects nations around the world. Saltwater desalination is one of the best methods for fulfilling this need, but it is an energy-intensive process that is expensive to maintain. Wave energy can be utilized to increase the efficiency of seawater desalination using a wave energy converter (WEC) to lower the external energy requirement.…
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