Abstract
With rapid growth of PV installation in Singapore in recent years, it is necessary to investigate the impacts of different PV installations on the performance of a solar PV system in the tropical area. Singapore Polytechnic was funded by the government to set up a solar PV test-bed for the research on the impacts of different PV installations on the system performance in the country. The PV test-bed included the 13 grid-tied PV systems that consist of the same configuration but were installed with different tilted angles of 0°, 10°, 20° and 30° and different orientations, i.e. the East, the South, the West and the North respectively. This paper addresses and analyses the monthly and yearly performances of 13 PV systems based on the site experiments. It is revealed that different PV installations affected the performance of a PV system to certain extents depending on system tilted angle and orientation. The monthly energy outputs and energy yields of 13 PV systems range from 76.25kWh to 136.34kWh and 62kWh/kW p to 111kWh/kW p respectively. It is found that thanks to the special tropical weather change in the country, the system tilted at 10° facing the East presents the best annual performance and the system tilted at 30° facing the West shows the worst.
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