Victor

Hello, I thank you for your reply, I wasn't expecting an answer anymore..... I have already asked to DELTA (it's the only contact with manufacturer i have), they answer that i have to use symmetrical configuration... So there answer was useless... FYI, you use the HUAWEI 30 KTL-A for the simulation. PVsyst seems to calculate the voltage by making a weighted average between the voltages of each MPPT and their power. If i dont use the modul to change the sharing of power on MPPT inputs, the total efficiency is the weighted average between efficiency of each MPPT and their power.

Hello, I would like to know how calculated the efficiency of 2 MPPTs inverter. Here below, my problematic: I have an inverter with 2 MPPTs, functioning at different voltage and power, for example: V1= 500 V P1= 5 kW V2= 600 V P2= 6 kW My question is: How to determine the power and the voltage of conversion in the inverter? I could calculated the efficiency using the curve for each MPPTs, but it might be idiot because it like taking 2 inverter into account. I think that the final power to be used is : P1+P2= 11 kW But i dont know about the voltage. Can you help me please? Kind regards Victor Daras

Hello, I'm starting out a little bit in PVsyst and I'd like to learn a little bit about simulation models. I saw that in the PVsyst help, the calculation of the incident diffuse energy uses the horizontal direct and a value named Hsoll, according to the hay model. Also, what is the meaning of the Hsoll variable in Hay's model? Knowing that the transposition models have nothing to do with the weather, when do we select the transposition model to use? During the generation of the meteo file or before starting the project simulation? Thank you in advance for your clarifications.