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PostPosted: Fri Aug 25, 2017 8:42 pm 

Joined: Fri Aug 25, 2017 8:22 pm
Posts: 2
Hi All,

Yes I am using backtracking.

I am trying to understand why there is a difference in the Near Shading: Irradiance Loss of -1.7% in v6.52 verses -9.1% in v6.63. I have examined everything from preferences and hidden preferences through the shading scene looking for any setting that could account for such a large difference in the simulated results. This is a Single Axis Tracker Grid Connected project. Do you have any insight on where to look?

Thanks in advance


Last edited by Dfroman on Tue Dec 12, 2017 7:51 pm, edited 1 time in total.

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PostPosted: Fri Aug 25, 2017 10:55 pm 
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Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1680
Are you using backtracking ?
There were indeed several issues in the version 6.52, for tracking systems in some special configurations (pairs of 2 trackers, axis orientation). I should have a look on your project to identify the exact reason.
But to my knowing the result of the V 6.63 should be correct.


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PostPosted: Wed Oct 04, 2017 4:57 pm 

Joined: Fri Aug 25, 2017 8:22 pm
Posts: 2
Thank you for the reply.
Yes, I am using backtracking. I have attached the PVSYST results from both V6.52 and v6.63 for your further review.
Dennis


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