Utilization of device parameters to assess the performance of a monocrystalline solar module under varied temperature and irradiance

In this work, an assessment on the variation of intrinsic parameters of a monocrystalline silicon photovoltaic (PV) module is carried out under varied temperature and irradiance, aiming at establishing some mathematical functions that are well describing these changes. The accurate Brent’s algorithm-based method is utilized to determine the parameters of the PV module. Then, the derived equations that correlate each parameter with the environmental factors were used to simulate current–voltage (I–V) characteristics at specific temperature and irradiance. This simulation result was compared to the datasheet I–V to show the robustness of the determined parameters. It was concluded that the change in parameters of the PV module is in good agreement with that of the polycrystalline solar cells, especially at low temperature and high irradiance. The parameters-related formulas were found to be very useful in simulating the I–V response of PV panels at desired temperature and irradiance.