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PostPosted: Mon Jul 23, 2018 12:46 pm 

Joined: Mon Jul 23, 2018 8:43 am
Posts: 1
I was performing a simulation in PV SYST and I am getting two different values of number of PV modules needed and total power.
I was trying to figure out the the number of modules needed for 598.5 KW dc using FS-275 MODEL of PV-panel of First Solar and in approximation it was showing 7980 modules required. But, in final report after simulation it comes to be 7905 modules only and also the power was also decreasing to 593 KW dc in the final report.

So Sir, my doubt is why this is happening.I mean I want a system of 598.5 KW DC but the final generated report comes to be for 593 kw dc only.For your reference, I am hereby attaching the screenshots.

pv syst 2.JPG
pv syst 2.JPG [ 69.84 KiB | Viewed 24033 times ]
pvsyst 1.JPG
pvsyst 1.JPG [ 168.44 KiB | Viewed 24033 times ]
PostPosted: Fri Aug 10, 2018 7:04 pm 
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Joined: Tue Oct 18, 2016 3:31 am
Posts: 303
It looks like it is rounding down. 5*31*51 = 7905 modules. . 5*31*52 = 8060 modules. You can get to your target with 5*28*57=7980 modules

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