Originally Posted by
dickw
Absolutely accurate tracking may not be so important. The difference in solar output (measured) in my experimental setup is small to tiny for +- 5 degrees. Makes some sense when you consider the cosine of 5 degrees is ~0.996.
When you get to the optical concentrators this isn't true. The big push these days in PV is to use smaller area cells, and focus a wider area via fresnel or similar lens. So off axis even a few tenths of a degree drops output measurably.
Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
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