Simulation Result

[Minh Hào]

Hi everyone,
I have a concern: will the simulation results be different with different configurations like below picture? I think it's yes in practical but in simulation, it shows not anymore different. Could anyone help me to understand this, please?  Let's assume the model being used is SG125CX-P2

[Robin Vincent]

From your table, I understand you have in one case 2*2 MPPT with 2 strings each, and on the other one only 2 MPPT with 2 strings each, is that correct ? 

You may or may not see any difference in your results depending on how you've set your simulation parameters. 

Having two strings per MPPT may result in a lower production when : 

• The combined strings power or current exceed the MPPT limits.
• The  voltage mismatch value in the detailed losses in not null.

 

Please also note that the maximum MPPT power depends on the power sharing option. If you have unbalanced MPPT input power, you can redistribute the total inverter power accordingly. This will let the MPPT connected to two strings to have a higher power limit, and strongly reduce the difference between your two configurations