Module Overlapping Issue in PVsyst When Using Zone Function on Uneven Terrain

[Swonno]

Dear PVsyst Support Team,

I am currently working on a project that involves arranging 18 PV modules (9 horizontally by 2 vertically) into a single string on uneven terrain using the zone function in PVsyst. While the modules align with the terrain as intended, I encounter simulation errors due to modules overlapping or encroaching upon each other. I understand that even a minimal spacing of 1–2 cm between modules is necessary to avoid such issues.

Could you please confirm whether this overlapping issue has been addressed in PVsyst version 8? Additionally, are there alternative methods within PVsyst to effectively position modules on irregular terrain without encountering these overlap problems?

Your guidance on this matter would be greatly appreciated.

[Muhammed Sarikaya]

Dear Swonno

This is a check to avoid interpenetration between the PV object and other objects, such as the ground. If part of the PV module is inside another object, that part will be completely shaded.

Therefore, you should avoid placing it too close to other objects as much as possible.

When using zone tools, you can determine the distance from the ground. If you set it to at least 1 meter above the topography, you shouldn't receive an error message indicating that your PV modules are too close to an object.

Regards,