<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Allan,<div><br></div><div>If it were me, I would do total old school. Just parallel them with a standard non MPPT CC.</div><div><br></div><div>Jay</div><div><br></div><div>Peltz power</div><div><br></div><div><div><div>On Oct 11, 2012, at 10:04 AM, Allan Sindelar wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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Wrenches,<br>
I'm posting this for Carl Bickford, prof emeritus of the renewable
energy training program at San Juan College in Farmington, New
Mexico. I'll forward your responses to him.<br>
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<blockquote><p class="MsoNormal"><o:p></o:p>I have a very interesting and
talented friend who is rebuilding a blue-water sailboat for
a round-the-world trip. He is well versed in solar and is
trying to use a relatively large array to charge a big
battery bank that will be used for propulsion as well as
general electrical. The propulsion system will be backed up
with a propane generator he is building himself out of a
Toyota truck engine.<o:p></o:p></p><p class="MsoNormal">As you can imagine, there is no place on
a sailboat where shading isn’t a problem. He and I were
wondering if there were products out there that could MPPT
either individual modules, or small groups of them for 12 V
battery charging. I have seen such things for the inputs of
grid-tied inverters, but nothing yet for off-grid. The other
choice is to go with many small MPPT charge controllers like
the ones from Solar Converters.<o:p></o:p></p><p class="MsoNormal">Any advice you can offer?<o:p></o:p></p><p class="MsoNormal">Take care,<br>
Carl<o:p> <br>
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</blockquote><p class="MsoNormal">Carl Bickford<br>
Professor of Engineering and Renewable Energy<o:p></o:p><br>
San Juan College<o:p></o:p><br>
4601 College Blvd.<o:p></o:p><br>
Farmington, NM 87402<o:p></o:p><br>
505-566-3503<br>
<a class="moz-txt-link-abbreviated" href="mailto:bickfordc@sanjuancollege.edu">bickfordc@sanjuancollege.edu</a><o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p></div></div></div></blockquote></div><br></div></body></html>