Wang, MenghongMenghongWangMa, X.X.MaHuang, W.-H.W.-H.HuangLiu, J.J.LiuCurran, A.J.A.J.CurranSchnabel, ErdmutErdmutSchnabelKöhl, MichaelMichaelKöhlDavis, Kristopher O.Kristopher O.DavisBrynjarsdottir, J.J.BrynjarsdottirBraid, J.L.J.L.BraidFrench, Roger H.Roger H.French2022-03-142022-03-142018https://publica.fraunhofer.de/handle/publica/40721910.1109/PVSC.2018.8547772This paper presents an alternative method to extract performance parameters including the maximum power point (P MP ), short-circuit current (I SC ), open-circuit voltage (V OC ), shunt resistance (R sh ), series resistance (R S ), and fill factor (FF) from time-series I-V curves of PV Modules under real-world exposure conditions. Moreover, ""steps"" in I-V curves are also extracted, which is considered as a sign for module mismatch and physical damage. To better quantify performance losses and distinguish loss mechanisms, Suns-V OC psuedo IV curves are also constructed from aforesaid real-world data, based on the measured I SC , V OC pairs during each week, and performance losses are calculated from the difference in P MP of initial and degraded I-V and pseudo I-V curves corrected with various algorithms.en621697conference paper