how

Hello, I am doing the experiment test on the effect of near shading to the energy production of PV modules over a year. Situation 1: I put the PV modules without near shading 3D scene, the loss diagram result shows that "Near Shadings: Irradiance Loss" is 0.3% Situation 2: I put the PV modules with near shading 3D scene, but the building block never caused any shadow on PV module, the loss diagram result shows that "Near Shadings: Irradiance Loss" is 2.4% Situation 3: I put the PV modules with near shading 3D scene, the shadow cover part of the PV modules in the morning (8am to 11am), the loss diagram result shows that "Near Shadings: Irradiance Loss" is 3.0% I wonder to know why i adding a building block but dont have any shadow on the PV modules that can caused a 2.4% of near shading: irradiance loss. What is the parameter that affect the losses due to near shading. Thank you in advanced.

Hello, May i know how to adjust 2 parameters below to obtain the higher performance ratio at the output of inverter. 1) PV loss due to irradiance level (cost 0.5% efficiency loss) 2) PV loss due to temperature (cost 9.5% efficiency loss) In my simulation, the thermal parameter i set to "free" mounted modules with air circulation. The geographic site at Kedah, Malaysia.