Jesse:
Do you have any way to compare the total harvest for the day for a given
module in a "clipping" scenario versus an unclipping? The question I want
to answer is: Do we improve production enough on the shoulders of the clip
to justify the loss on the peak?
Thanks,
William Miller
At 06:25 PM 1/27/2013, you wrote:
A while back (3 years)I installed a system (bid spec) for a school that
used 215W RECs and D380s on a dual axis tracker. With the ability to
monitor the array, I see constant clipping. The modules will usually
produce 199Ws regularly. A few days ago we had temps of -34F and clear
skies. My array at home had one of its best days this winter. I have
Tigos on so I can monitor watts, current, temp and voltage. I was seeing
anywhere from 215W to 223W from my modules between 11:30am and 1pm. The
modules on the tracker were still producing 199W. I didn't get an
irradiance reading that day but my Tigos showed above IMP readings and way
above VMP reading that day.
I've only been doing this for 6 years, so I don't have the
experience that some people on this list have, but it seems foolish to me
to waste that production. It's kinda site specific, but where I live the
cold temps and snow reflection seem like something we should be utilizing.
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