Kyle Kattke

I found this same problem occurs with v6.49. Regards, Kyle

I have a Single Axis Tracker array with backtracking activated. I set the azimuth to 19 degrees within the "Object Positioning" settings. When I simulate with PVsyst v6.44, the report states under "Simulation Parameters" an "Axis Azimuth" = 19 degrees Production = 3802 MWhr/yr I don't make any modifications to the project, and I open it with v6.47. When I simulate, the report states under "Simulation Parameters" an "Axis Azimuth" = 0 degrees Production = 3823 MWhr/yr In v6.47, I have found that I can get the report to state 19 degrees azimuth and 3802 MWhr/yr production with the following sequence of steps: - turn off backtracking - calculate shading table - turn on backtracking - calculate shading table - perform simulation But, when I re-open v6.47 and re-simulate, it reverts back to reporting 0 degrees azimuth and 3823 MWhr/yr production. Regards, Kyle

I'm using PVsyst V6.44. I've selected the Perez transposition model within my project's parameters. However, in the report, it states the Hays transposition model has been used. I believe my project is using the Perez model for the simulation, and it is simply reporting the wrong model. I tested this theory by changing the transposition model to Hays which resulted in a 1.6% production decrease from my original simulation using Perez. Kyle