Analysis and modeling of a photovoltaic system using directional irradiances and optimization techniques

This paper presents an PV system performance assessment with application of optimization techniques including evolutionary algorithms and trust region reflective method. The relationship between solar irradiation and PV system power output can be used to indicate any operational abnormalities. PV panels arrangement in urban areas is determined by architectural constraints and not simple power output maximization. The result is an inhomogeneous exposure of panels to sunlight. Authors propose a spherical irradiance measurement and its adjustment to a specific PV system power output. For sophisticated panels arrangements the adjustment is performed using optimization techniques.