Power Prediction Of Photovoltaic System Using Four Parameter Model

The output power of a solar cell can be predicted using some basic cell parameters. Different parameters are used for modeling of solar cell such as: light generated current, diode saturation current, diode ideality factor, series resistance, shunt resistance, etc. This study presents the effect of four parameters (light generated current, diode saturation current, diode ideality factor and series resistance) of a solar cell on the output power of PV system (series connection of two PV Modules of maximum power 18 watt peak each). It is concluded from literature survey that four parameter method of solar cell characterization is quite accurate. The output power of system is estimated using program developed in MATLAB Software and the results are validated using experimental data. Experimental results shows that estimated output power of four parameter model is very close to real one.