Design and analysis a new converter for extraction of low-height wave energy in Persian Gulf

Low-amplitude waves in the Persian Gulf are due to the short length of fetch in the sea, geographical conditions, and the seabed topography. In the Persian Gulf, the wind direction and wind speed changes are uniform during the year due to latitude and longitude of the Persian Gulf and little variation in its climate and the consistent climate in Gulf-around. The small changes of wind speed and its direction give rise to form waves with little changes in the frequency. In this paper, the point absorber wave energy converters were evaluated from different point of views. Applying some changes on the geometry of energy absorber buoy, wave energy conversion and storage system, its algorithm, and mooring system of conventional devices of point-absorber converters, a new converter was designed for energy absorption of short-amplitude waves (less than one meter) in the Persian Gulf. Furthermore, cylindrical buoy in Cosine curve form was designed and the extracted energy was compared with a study by Pastor and Liu in 2014 on the absorbed energy by different buoys. A hydrodynamic analysis was carried out on a converter with a tension leg mooring and the results were compared with the results of a study by Yu and Li in 2013, which was based on the dimensions of the point-absorber converter, OPT-PB150. The results showed that applying variations in the performance of conventional devices and using of tension leg mooring, enables the extraction of short wave energy in the Persian Gulf.