arossi77

Thank you for the answer. I understand the IAM is an intrinsic characteristic of the module, my intention was just to take in account (through this parameter) the different quantity of energy which is "captured" by the panels due to the different exposition. However, from your answer it seems there are no chances to compare - using the PVsyst - the performance of multi-MPPT inverter respect the single-MPPT inverter. I run some simulations considering two different orientations and in the first simulation "connecting" one MPPT on the array with one orientation and the second MPPT on the array with other orientation; in the second simulation I considered the inverter as monolithic (single-MPPT) and I configured the array as "mixed". It is not surprising for me the PR in case of monolithic is lower than the multi-MPPT but from the report the difference is related to the efficiency of the inverter (probably because the inverter works at lower voltage where the efficiency is lower?) and not to the panel mismatch. The two orientations were set to 10° and 25°. Attached the PVsyst report. Thank you.

Hello, I'm facing the situation where the PV Arrays are installed in a wavy terrain (refer to attached picture). Azimuth is constant. I'd like to run simulation to evaluate the benefit of the multi-MPPT operation against the single-MPPT operation in order to select the proper DC-side inverter configuration. I guess I should consider the same installation conditions (same azimuth and tilt) with different IAM values, but how to evaluate the bo factor? To compare the multi-MPPT operation with the single-MPPT operation, I could set up the simulation defining multiple subsystems each one with its own bo factor (how to calculate it basing on the mechanical positioning of the modules?) and another simulation defining a single subsystem with a different (higher) bo factor (how to "average" the bo factors to define the single-MPPT simulation value for bo?). Any help will be highly appreciated!!! Best regards, AR