PVsyst does not show Plane of Array Irradiance AFTER backtracking

[Ahmad]

Hi all,

I'm trying to find a variable that gives the Gobal Inclined Irradiance in actual plane of array AFTER backtracking. The closest I found in PVsyst output are:

GlobInc: The problem of this one is that I understand it gives the idealised GInc if the trackers were always tracking the sun (i.e. without considering backtracking early morning or later afternoon).

GlobEff: The problem is that this gives the effective global Inc after all optical losses. I need the value BEFORE optical losses but after Backtracking. 

Any advice? Basically I need the GHI transposed to the actual tilt angle, without any corrections.

Regards,

Ahmad

 

[dtarin]

If backtracking is enabled, GlobInc considers backtracking, as does GlobEff, and all other irradiance parameters. 

[Linda Thoren]

Hello,

Indeed both GlobInc and GlobEff will be in the collector plane at the position with backtracking if backtracking activated. You can export also the phi angle to verify the position of the trackers every hour.