Extraction of photovoltaic generator parameters through combination of an analytical and iterative approach

<span>In the present work, we propose an improved method based on a combination of analytical and iterative approach to extract photovoltaic (PV) module parameters using measured current-voltage characteristics simple diode model. First, calculate series resistance set formulas for base values three curves. Then, other are analytically expressed as functions serial ideality factor linear least-squares method. Finally, is calculated applying algorithm minimize normalized root mean square error (NRMSE) value. The proposed was validated with real experimental two PV generators, which showed best fit I-V curve. Moreover, needs only initial value factor.</span>