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 Post subject: DC losses
PostPosted: Fri Jan 25, 2013 4:57 am 

Joined: Sun Jan 13, 2013 4:21 pm
Posts: 9
Can someone tell me of the assumed 2% losses on the DC side? What is the background to this assumption? I know that once the layout of an array is worked out, the copper losses could be estimated. Thanks, Al.


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 Post subject: Re: DC losses
PostPosted: Wed Mar 06, 2013 11:08 pm 
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Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1680
PVsyst puts a default value of 1.5% for the array ohmic loss.
It is an reasonable initial guess for your first simulations of a system.

But after that you have of course to estimate your real array wiring resistance according to your own cabling options. There is a tool for helping you in this task.


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