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Comparative Study of Tracker Based PV Panel for Stand-Alone PV /Diesel/Battery Power System

In this paper, the PV/diesel/battery electrical power system for the community health center in the Mentawai Island has been presented with different tracking mechanisms. First, the health center's electrical system was designed for a photovoltaic (PV) system with fixed installations combined with diesel generators as backup systems. The optimal results with the lowest cost of energy (CoE) values are obtained with the operation of the PV /Diesel configuration and storage system. Furthermore, the electrical system was tested using three different PV structure installations - fixed structures, single-axis tracking, and dual-axis tracking mechanisms. Among the three tracking configurations, the two-axis tracking system was the most profitable in terms of PV electricity production of 3,931 kWh in a year and had the lowest CoE of 0.307 $/kWh. The payback period for a flat PV system is longer than the two-axis tracker PV system. Apart from the increase in power generation, PV systems with two-axis solar tracking will need fewer PV modules to supply the same load, requiring less space.