PVsyst's forum

Welcome on PVsyst's forum.
It is currently Wed Aug 05, 2020 3:25 am

All times are UTC+02:00




Post new topic  Reply to topic  [ 1 post ] 
Author Message
PostPosted: Mon Mar 25, 2013 6:37 pm 
User avatar

Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1658
In the version 6, you have the opportunity of defining Low-light efficiencies, and use them for the determination of the Rseries.
You can do these definitions in 2 different dialogs:
Attachment:
File comment: Main Low-light definition dialog
LowLight_Maindef.png
LowLight_Maindef.png [ 70.37 KiB | Viewed 7734 times ]
Attachment:
File comment: Low-light definition in the optimization dialog
LowLight_Optimize.png
LowLight_Optimize.png [ 48.02 KiB | Viewed 7734 times ]
This is a difficult question as there are several ways or situations for defining these parameters.

The "Heavy" way ("Additional data" / "Low-light data") has been developed for situations when the full characteristics Isc, Voc, Vmp, Imp are available for several low-light points.
In this case the tool will calculate the resulting low-light relative efficiencies.
This should be used when you have full measured characteristics defined usually for one specific module.

Now after measuring one module, most of times you will want to extend the Low-light efficiency profile to other modules of the same series. In these case only the 4 relative efficiencies are to be defined. This may be done either in the "Heavy" tool or in the "PVsyst model optimization" dialog. The manufacturers will have the opportunity of defining these values instead of the Rseries in the database.
If you have defined full data in the "Heavy" tool, you should find these values in the second dialog, but not modifiable.
If you define these values in the optimizing tool, you will retrieve them in the "Heavy" tool.

The "optimize Rs" button is a "one shot" action: it only optimizes at the time you press it, and leave the opportunity of modifying the rserie afterwards.
If you check the box "Set Rs for optimizing", this will enable the optimization according to Low-light at each opening (reading) of the module.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 1 post ] 

All times are UTC+02:00


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited