Mkitay123

Hi, I am running a simulation with multiple pitches in the shading scene. The average pitch would be 10.9m (pitch 9.5m, 10.5, 11, 11.5 and 12m). However, PVSyst automatically selected a 9.5m pitch in the reference backtracking parameters within the shading scene (image below). How does PVSYST calculate this average pitch?

Hi All, I am running a simulation with multiple pitches in the shading scene. The average pitch would be 10.9m (pitches are 9.5m, 10.5m, 11m, 11.5m and 12m) however PVSYST automatically selects 9.5m in the Reference Backtracking Parameters within the shading scene (image below). How does PVSYST calculate this average pitch?

Hi Agnes, Thank you for your quick response. I noticed that the pitch in the orientation tab has changed. I understand the the pitch stated in the orientation tab is captured from the shading scene. The shading scene has 5 different pitches from (9.5m, 10.5m, 11m, 11.5m, 12m), could you please clarify how PVSYST calculates the pitch assumed in the orientation part? IS the pitch in the orientation used for the calculation of the global incident on coll plane? or is it calculated from the shading scene? Figure below for the initial simulation with PVSYST 7.4.4 Figure below on latest simulation PVSYST 7.4.8 Also, is the global incident on coll. plane calculated based on the parameters in the orientation (tracking range, backtracking, pitch etc)? How is the impact of backtracking and shading losses accounted for in the overall POA?

Hi everyone, I am currently updating an old project using single axis trackers previously simulated with the version 7.4.4. The only change in the simulation was the PV modules which led to a 0.004% reduction in the plant capacity. The meteo file remained the same as the initial simulation with the version 7.4.4. So has the tracking parameters (tracking range, pitch etc) I noticed however, that the global incident in coll. plane has reduced by 2.3% (from 2,263.4 kWh/m2 to 2,211.9 kWh/m2). Has there been any updates to the transposition algorithm in PVSYST since the 7.4.4 version that could justify the changes? What could be the reasons for the drop? I appreciate any input to understand the root cause of the shortfall.