METHOD FOR DETERMINING AN ELECTRICAL MODEL OF A CHAIN OF PHOTOVOLTAIC MODULES, DIAGNOSTIC METHOD AND ASSOCIATED DEVICE

摘要

One aspect of the invention relates to a method (100) of determining an electrical model of a chain of photovoltaic modules from a characteristic I (V) of said chain comprising: a step (E2) of detection of a first linear area and a second linear area of characteristic I (V); a step (E3) of initializing the parameters of an electrical model without derivation corresponding to a first operating condition, called condition without derivation; a step (E4) of optimizing the parameters of the electric model without derivation from a reference characteristic I (Vref) equal to I (V); a step (E5) of determining the parameters of the electric model corresponding to a second operating condition, called condition with derivation, in order to obtain an electric model with derivation from the characteristic I (V); a step (E6) of determining, from characteristic I (V), the best model among the model without derivation and the model with derivation.