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Performance Investigation of Bifacial PV Modules in the Tropics
J.P. Singh, T.M. Walsh, A.G. Aberle
Bifacial PV Module, Diffuse Radiation, Tropical Climate
Components for PV Systems
Subtopic: PV Modules
Event: 27th European Photovoltaic Solar Energy Conference and Exhibition
Session: 4BV.2.15
3263 - 3266
ISBN: 3-936338-28-0
Paper DOI: 10.4229/27thEUPVSEC2012-4BV.2.15
0,00 EUR
Document(s): paper


Bifacial photovoltaic modules can convert solar energy to electrical energy from both sides of the module. This means that light reflecting off the rooftop and hitting the rear side of the module can also be converted. Tropical climates such as Singapore have plenty of sunlight to produce power from photovoltaics, with diffuse content of more than 50% of the total irradiance. Our interest is to know the behaviour and performance of bifacial modules under these conditions. In the present study, commercially available bifacial and monofacial modules of the same cell technology were installed in Singapore on a rooftop at the National University of Singapore (NUS) and data for various electrical parameters are being collected. The performance ratio with respect to the horizontal-plane irradiance has been measured to find the optimum tilt angle of the bifacial modules for Singapore. The gain in short-circuit current has been studied with respect to the diffuse/global irradiance ratio and the time of the day. The results from this study will provide guidelines for the optimal installation of these modules in the tropics, and will also help to improve the design of bifacial modules for tropical climate conditions.