Solar Panel Voc-MPPT?
Wondering if there is any relationship between measured Voc and MPPT performance with a 24v panel. My 12v panel has a Voc rating of 21.9 and Isc of 8.2, but I often see 8.2ish when Voc is only 20....
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ktmrfs wrote:Looking forward to that. I think if I bang my head hard enough, I should be able to capture some graphs with the Morningstar software and post them up, also. :R
Will do.
And for BFL, a teaser. My test data shows that Voc or Isc will give you basically the same good results for determining optimal panel orientation!!
And wait till you see my results of output current on a flat (horizontal) panel at 46 latitude in October vs. optimal tilt!!!!
Have a draft of the results, but still going through checking grammar, etc. to make sure I am clear and consistent and cover all my asumptions, measurement techniques setup etc.
Hope to post something tomorrow
BFL, the MPPT controller doesn't "time out" when seeking a new power point. It operates on the last point until it refreshes to the new one. There is no interruption of power output.
Good to see you are getting numbers close to ratings of the module. That is what I usually hear and the lower voltages you posted from your initial deployment were not inline with other postings I've seen. Are you building a new tracker for the larger panel?
