Big difference between global incident in collector plane ( PVSYST tracker vs PVCASE import .pvc)

[herminator]

Hi,

Implementing the same pitch = 5.1m for SAT trackers using PVCASE and pure PVSYST led to significant difference in global incident.

For PVCASE scene this always much lower value. Both tested with 7.2 and 7.3 version considering backtracking. 1644 vs 1541! Azimuth for trackers = 0.

Has anybody faced the same problem?

Cheers.

[dtarin]

You need to trouble shoot more. There is a source for such a large discrepancy.