A Small Segmented Oscillating Water Column Using a Savonius Rotor Turbine

Abstract

Abstract-This paper outlines a project which addresses the use of a small segmented oscillating water column with three sections. The turbine utilises cascaded Savonius rotors (one for each section) and this system is developed and tested for validation of the performance algorithms. It is shown that the systems can be easily described and a system developed that can generate. It would be suitable for a shoreline location such as a harbour wall, where waves are random and not orthogonal to the column. Conversion rates in the region of 20 % are tabulated for the system with an output of 25 W peak. The paper will give a full algorithm for the system while the digest outlines some crucial points with regards to the sizing and operation of the column with respect to the wave frequency and wavelength. The turbine is fully characterized -the generator is a brushless permanent magnet machine connected to a diode bridge rectifier and variable load.

Analysis of Wave Power Plant on the Northeast Coast of the Absheron Peninsula

“…Therefore this makes too great interest in order to apply the plant here. Up today many researches and tests have been done for improving Wells turbine [13], [14]. Thus, to the realized tests and researches mainly on the Northern sea coast so, England, Denmark, Germany and other European countries testing and experimental investigations are being carried out.…”

The investigation of a segment multi-chamber oscillating water column in physical scale model

“…7, which influences the natural frequencies of all chambers. The mean wave height across the side face of the column [20][ 21] can be described by…”

“…The second term of the absorbed power due to change air pressure (P P ), which can be represented as [20]:…”

A Novel Wave Energy Harvesting System for Ocean Sensor Network Applications

“…A study (before 2010) showed that there were over 1000 patented ideas for wave energy conversion. Among different technology groups OWC is a very straightforward device consisting of two basic part: 1) the chamber; and 2) the turbine [5] Multi chamber or segmented OWC has been studied briefly in [6] Performance of the turbines like savonious or wells and effect of guided vanes on wells turbine used in OWC, have also been matter of research. [6,7,8] …”