.OND files in default database

[Niels]

What is the source of the .ond files in the pvsyst database? are these made by pvsyst or the manufacturers?

For a project I have the following 3 .OND files

2019 .OND name implies version 6.8 in pvsyst

2022 .OND by default in the pvsyst database

2023 .OND received directly from the manufacturer

 

My problem is that the 2019 and 2023 are the exact same, both versions have the same values and ignore stuff such as maximum current mppt.

Meanwhile the one in the pvsyst database as an incorrect current which when used would lead to weird capping losses.

Are the .OND files in the database made by pvsyst themselves? 

[jaymegibson]

Quote

 

On Posted April 17, 2024, Geometry Dash said:

What is the source of the .ond files in the pvsyst database? are these made by pvsyst or the manufacturers?

For a project I have the following 3 .OND files

2019 .OND name implies version 6.8 in pvsyst

2022 .OND by default in the pvsyst database

2023 .OND received directly from the manufacturer

 

My problem is that the 2019 and 2023 are the exact same, both versions have the same values and ignore stuff such as maximum current mppt.

Meanwhile the one in the pvsyst database as an incorrect current which when used would lead to weird capping losses.

Are the .OND files in the database made by pvsyst themselves? 

 

The 2022 file in your database having an incorrect current is likely due to how PVsyst interprets unspecified parameters.If a manufacturer provides a datasheet but leaves the Maximum Input Current blank or ambiguous, PVsyst might calculate it using a default formula:

I_{max} = Pnom,DC / Vmin,Pnom

If the manufacturer's datasheet and the PVsyst-calculated value don't align, you get the weird capping losses clipping you are seeing.