In this paper a comparison between the power output (P_(dc)) of a cylindrical-shaped thin film CIGS PV system and the equivalent model implemented with the tool Radiance is presented. The simulation is ran for a one year PV production period and both P_(dc) profiles for specific days (summer vs winter clear sky days, clear sky vs cloudy or very cloudy days) and the overall model performance are analyzed. The objective is to verify the accuracy and the usefulness of the software Radiance in providing data for the estimation of the power output of complex shaped PV. Radiance could then be included in software tools for the estimation of power production in building and product integrated photovoltaics. Results suggests that the method is promising for the adoption in the BiPV segment although a critical construction of the model is still crucial to enable sufficiently good results; this makes fully automated process still difficult to reach. In addition, the wiring strategy needs to be simulated with higher detail.
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