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I want to design a solar system (15.48 KW =36 Modules x 430 w per module) on two roof (28 panels on one roof and 8 on other) having tilt angle of 30 and 20 degree respectively at location of 41°18'06.0"N 0°59'17.8"E. I selected Pv module of 430 W and a hybrid inverter (8KW) of Fronius_Symo_Gen24_8_0_Plus.OND (Fronius International) having 2 MMPT inputs. During Design, I configured 18 module in series for 1 inverters and the same for other. Each inverter have 2 MPPT so i have following confusions. 1. Do i need to configure 4 strings (each of 9 module in series) with 1 string for each MPPT or to connect 18 module with one mppt? (Please review snap) 2. Location is Northern hemisphere, so panel should be faced towards south having azimuth angle of 180 degree. But when i select 180 degree, Loss due to Optimum goes upto 42% (snap attached) while it comes 10% when azimuth angle of 0 degree. Why it is happening? 3. What will be azimuth angle in my configuration ? 4. What can be the best configurations ( No of strings and MPPT inverter)? Valuable Expert opinion and prompt response will be highly appreciated, please.. 3.

I want to design a solar system (15.48 KW =36 Modules x 430 w per module) on two roof (28 panels on one roof and 8 on other) having tilt angle of 30 and 20 degree respectively at location of 41°18'06.0"N 0°59'17.8"E. I selected Pv module of 430 W and a hybrid inverter (8KW) of Fronius_Symo_Gen24_8_0_Plus.OND (Fronius International) having 2 MMPT inputs. During Design, I configured 18 module in series for 1 inverters and the same for other. Each inverter have 2 MPPT so i have following confusions. 1. Do i need to configure 4 strings (each of 9 module in series) with 1 string for each MPPT or to connect 18 module with one mppt? (Please review snap) 2. Location is Northern hemisphere, so panel should be faced towards south having azimuth angle of 180 degree. But when i select 180 degree, Loss due to Optimum goes upto 42% (snap attached) while it comes 10% when azimuth angle of 0 degree. Why it is happening? 3. What will be azimuth angle in my configuration ? 4. What can be the best configurations ( No of strings and MPPT inverter)? Valuable Expert opinion and prompt response will be highly appreciated, please.. 3.

I've ran two simulations, both of them are a 3MW (12 x 250kW inverters) and 4,066MWp array, two different sites. The first simulation, let's call it Plant 1, I got the value of -4,06% Inverter loss due to nominal inverter power. The second plant, Plant 2, with the same inverter and array configuration, I got the value of only -1,82% loss. Plant 1 Plant 2 When I spotted this difference I figured it could be due to the respective plant sites, which are distinct. So I inverted the sites in both simulations, but it didn't make much of a difference: It's noticeable that the inverter temperature loss changes properly, but the inverter loss duo to nominal inv. power is about the same. Plant 1 - Inverted site Plant 2 - Inverted site I can't figure out what exactly is causing this Inv. loss duo to nom. inv. power, but it's certainly about each simulation's parameter. Can somebody help me with this issue? What parameter could be causing this significant difference?