Hi,
I'm simulating a setup of Trina DEG21C.20 650W and according to the datasheet we can have 28 panels in one string with a temp diff of -55 degrees and a DC voltage of 1500. This gives us 18.2 kW/string with a 19.63 A Isc/string.
The 330KTL has a MPPT config with 4/5/5/4/5/5 inputs, and I’m planning to use 24 strings/Inv (132% max_overload, 146 % Pnom DC/AC), è 4 strings/MPPT. We are slightly above the Max current/MPPT (4*19,63 = 78,52 A) , but I assume this would only result in some losses when peak production, and we are underneath 115 A for the max short circuit current/MPPT. If we look at the NOCT the the Isc is of 14,79A and at 4 inputs/MPPT this would lead to 59.16 A.
I've received information that the PVsyst yield report does not take into consideration of the high current and only the overload factor (power) to determined the losses. I've checked how many hours the weather data is at 800 W/m2 (current being at 14.79A) or above and its only 200 h a year (stands for about 4-5% of all sunny hours at my location, South Sweden). So in my conclusion the inverter should be clipping the current during these 200 h, but I don't think this will affect the yield that much, but how can I check this in the yield report/hourly values for this system?
