Dear Martin
I'm sorry that due to company security restrictions, I can't send the project files.
Based on your comments, I compared "Irradiance onto horizontal plane" , the "Irradiance onto tilted plane" and imported irradiance data. The "Irradiance onto horizontal plane" is basically the same as the imported irradiance data.The "Irradiance onto tilted plane" data will be higher than "Irradiance onto tilted plane", but I think this is reasonable, because I am in Dongguan, China, the module is installed with a south angle, the "Irradiance onto tilted plane" data Because the inclination angle will increase.
As for the sun height curve and the irradiance curve are basically synchronized.
As for PV module data, the manufacturer only provides STC data (performance in STC: 1000W/m², 25°C , AM1.5).Low light performance parameters not provided.From 10:00 am to 3:00 pm, the irradiance value is about 400-900kWh/m2. Will this value be considered by the software as a low light scene?
In addition, I would like to ask, during the simulation, if I select the meteorological data of a certain place in the software library, do I still need to manually input the sun altitude?