Solar cell parameters extraction optimization using Lambert function

Solar cells are characterized by internal electrical parameters not displayed by the manufacturer. Their identification is necessary because it allows the photovoltaic system simulation and optimization. Currently, the new and simple extraction methods development is a challenge for researchers. In this work, a new approach is presented for exact determination the single-diode model multi-crystalline silicon cell five parameters. Our method consists in calculating the parameters from the ideality factor estimation using the Lambert function and the parasitic resistances curve (series and shunt). Absolute and relative errors are also calculated to show the proposed method importance over another method.