Calculation with different number of panels on the string.

[Bakhtiyar]

Please tell us how to calculate in a program with different numbers of panels on the same system ?

[Lazare Fesnien]

To do this, you must create different sub-arrays.

When you have a different number of strings on the MPPT inputs, you should create one sub-array for each configuration (for example one sub-array for the MPPTs with a single string, and another one for the MPPTs with two strings).

 Then, in ‘power sharing’, you tell PVsyst which sub-arrays belong to the same inverter and how the power of the inputs is balanced.

 I have attached a PDF document to this e-mail with short examples on how to proceed. You can also find more information in the help under:

‘Project design > Grid-connected system definition > Multi-MPPT inverters’

‘Project design > Grid-connected system definition > Multi-MPPT inverters: power sharing’

[Bakhtiyar]

1 hour ago, Lazare Fesnien said:

To do this, you must create different sub-arrays.

When you have a different number of strings on the MPPT inputs, you should create one sub-array for each configuration (for example one sub-array for the MPPTs with a single string, and another one for the MPPTs with two strings).

 Then, in ‘power sharing’, you tell PVsyst which sub-arrays belong to the same inverter and how the power of the inputs is balanced.

 I have attached a PDF document to this e-mail with short examples on how to proceed. You can also find more information in the help under:

‘Project design > Grid-connected system definition > Multi-MPPT inverters’

‘Project design > Grid-connected system definition > Multi-MPPT inverters: power sharing’

Thank you very much!