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I'm working on a project with 3 different modules (705, 710 and 715 Wp) connected to a single MPPT inverter: Ideal Condition (No Losses) Module 705 Wp 710 Wp 715 Wp Config. A B C Total Module Imp (A) 17.55 17.59 17.63 Vmp (V) 40.2 40.4 40.6 P (Wp) 705 710 715 Electrical Configuration String/Inv 8 36 37 81 Mod/STR 30 30 30 Arrangement Vmp String (V) 1205.1 1210.9 1216.7 Imp String (A) 140.4 633.2 652.3 P config. (kWp) 169.2 766.8 793.7 1729.7 An alternative modeling approach is to change the .OND to 3 MPPTs and use the MULTI-MPPT tool. This will allow me to model all three module types in the same inverter. Will making this change to .OND cause other problems? I did the simulations below to test: Simulation 1: 3 inverters with original .OND (1 MPPT per inverter). Each inverter is configured with a different module, totaling 5,176 kWp. E_grid = 11261 MWh Simulation 2: 3 inverters with modified .OND (3 MPPTs per inverter), only to allow modeling in PVsyst. Each inverter is configured with 27 strings of the three types of modules, totaling 5,176 kWp. The PVsyst MULTI-MPPT tool is used to group the 3 MPPTs on the same inverter. E_grid = 11261 MWh The energy result (E_Grid) is the same in both cases. I understand that PVsyst doesn't consider any differences between the models. Therefore, we must calculate a loss due to this electrical configuration. I understand that this electrical configuration will result in a greater mismatch. One way I found to calculate the electrical losses of this configuration is to consider that "the array voltage is always limited by the lowest voltage string." In this case, the voltage of the 710Wp and 715Wp strings will be equal to the voltage of the 705Wp string. I calculated the power of each configuration (P config. (Wp) = Vmp String (V) X Imp config (A)):

Hi Everyone, I am experiencing a configuration issue while simulating a system with multiple inverters and MPPT inputs in PVsyst. Here are the details: - System Configuration: Inverter 1: 5 strings of 20 panels in series and 5 strings of 18 panels in series, totaling 10 strings. The inverter has 12 MPPT inputs. Inverter 2: 4 strings of 20 panels in series and 4 strings of 19 panels in series, totaling 8 strings. The inverter also has 12 MPPT inputs. - Issue: The error message states: "The sum of the MPPT inputs in the sub-arrays is not a multiple of the number of inverter MPPT inputs." PVsyst interprets the configuration as using 1.5 inverters instead of two separate inverters if I did not used MPPT Sharing. Could you please provide guidance on how to configure PVsyst to accurately reflect the use of two inverters, each with their respective string configurations and MPPT inputs? Thank you for your assistance.

I am doing a project where I tried to do the simulations with the power-sharing to distribute power equally among the MPPT but I am getting below error "The sum of power shares is larger than 100%". I have attached the images for your reference. First snip shows the list of sub-arrays and system equipment. Below snip is after the power-sharing defined No error in the system after power sharing is done. I can simulate the system without any error But when I go back to the project page I get the error "The sum of power shares is larger than 100%" Please see the below snip. Now, if I go to power-sharing again percentage is changed for each MPPT, and Pnom ratio is uneven instead of equal or near to equal. Now If I uncheck and check, power sharing works fine but sharing is not retained after simualtions. As of now, I have done the simulations with partial sharing but can you please suggest a solution? I can provide more info if needed.

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.

im only using 4 out of 5 mppt, and in "number of inversor" is just 0.8, not even a full inversor, does it make diference on the simulation??