Jump to content

Profile angle erroneously set to 0 for fixed-tilt simulation


Recommended Posts

Hi, I am running PVsyst 7.2.10.  I'm encountering an error which I'm not sure has been fixed in later versions, but I wanted to make you aware of it regardless.

When running a fixed-tilt simulation, on a specific day the profile angle is going to zero at a time when the irradiance is not zero.  Perhaps not coincidentally, at this time the sun azimuth is exactly -90 degrees (I have also seen profile angle going to zero when sun azimuth is exactly +90 degrees).  This is causing the energy production to be much lower than it should be at this hour.

The array is fixed tilt, with a tilt of 25 degrees and an azimuth of 0 degrees (directly South).

See the screenshot below:


Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...