DOI: 10.5176/2251-189X_SEES14.26

Authors: Quek Yang Thee


This paper describes the installation of a three-phase grid-tied 30.05kWp photovoltaic (PV) system on the rooftop of a high rise building in Singapore. It discusses the considerations taken during the design and installation phase of the PV system that allows for the achievement of a high performance ratio, despite the system being in a cluster of buildings of different heights. The PV system has been able to achieve a high performance ratio of 81.8{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}. The remaining 18.2{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465} of the incident solar energy in the analysis period that is not converted into usable energy can be attributed to factors such as conduction and thermal loss along the balance of system (BOS). The 30.05kWp PV system consists of an array of 15.05kWp Mono-crystalline panels and another of 15kWp Poly-crystalline panels. They were arranged in 6 strings and were set up on the same roof top. This paper shall discuss the system electrical connections between the 6 strings of PV modules and the 6 inverters to be grid tied to the 3-phase utility system. The data collected on the system’s energy yielded over a period of 4 months is presented in the paper and it is used to calculate the performance ratio of the PV system. Analysis also shows a linear relationship between the module temperature and the irradiance.

Keywords: component; Solar energy, Photovoltaic, mono-crystalline, poly-crystalline, grid-tied, renewable energy, tropical


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