Resumen
Procedure to estimate the values of the resistance of losses, rs and rsh, of photovoltaic modules and generators, which includes the initial calculation of the resistance series rs (0) and the shunt resistance, rsh (0) for k = 0, from the formulas: **figura01** Where i {sc} is the short-circuit current, i {mp} is the maximum power current, v {oc} is the open-circuit voltage, vmp is the maximum power voltage and vth is the thermal stress; and, subsequently, perform an iterative process of calculating the resistance series rs (j) and the shunt resistance rsh (k), where j> = 1 and k> = j, from the equation: **figura02** Where a and b are calculated from the formulas: **figura03** Until the difference between two consecutive iterations is less than the limit value vlim that has been specified. **figura04** (Machine-translation by Google Translate, not legally binding)