Improvement of efficiency of photovoltaic generating system utilized on a fishing boat

The purpose of this study is to improve the efficiency of operation of a solar battery to supply energy for equipment in a fishing boat. For this purpose, a long-term experiment employing a photovoltaic generating system was carried out. This system allows the adjustment of the setting voltage based on the solar battery temperature, thus producing constant voltage. The efficiency obtained with this system (15%) exceeded by 2 percentual points the efficiency obtained in a previous study. The electric power which could be generated with this system in an actual ship was estimated to be about 67 kWh per day. This result suggests that a solar battery could be utilized as a power supply for the floating charge device of a storage battery system.