Hello my name is Giovanni and I am new here,
I need to make a project for my university and it consists of creating a PV model that spits out the maximum power for given irradiance and temperature, i think i have everything but i am missing a formula for Rs (equivalent series resistance). What i mean by it is that i need a formula that describes how it varies depending on irradiance and temperature in that moment. I have looked on many books and websites but i did not find anything and not even on any forum related to PVsyst, can you guys help me?
Thank you so much
