I am trying to calculate the power of a PV-Module with the pvlib.singlediode() function. In before I fit the parameters, which I do with the calcparams_pvsyst() function. For calcparams_pvsyst() I use the parameters that I get from reading my module into Pvsyst (the Desktop Programm).
My problem is, that my singlediode funtion is not converging. I get the error: Exception: EXCEPTION:iterations exceeded maximum (50).
Is there a possiblity to fix this. I already tried different methods in the singlediode-function. Is it maybe possible, that I exported my parameters from pvsyst to calcparams_pvsyst() wrong.
What is important to notice is, that for most of the input data the model is working, but only for some input data it is not converging. This data has no suspicious Irradiance or temperature values.
total_irr = row["Irradiation"]
temp_cell = sapm_cell_from_module(row["Temp"], total_irr, deltaT)
IL, I0, Rs, Rsh, nNsVth = calcparams_pvsyst(total_irr, temp_cell, 0.004491, 0.95, -0.072, 9.98, 1.4e-11, R_sh_ref=300, R_sh_0=1200, R_s=0.252, cells_in_series=60, R_sh_exp=5.5, EgRef=1.121, irrad_ref=1000, temp_ref=25)
single_diode_res = singlediode(IL, I0, Rs, Rsh, nNsVth )
Does any of the parameters in calcparams_pvsyst() seem completely unrealistic?