Hi Allan, If it were me, I would do total old school. Just parallel them with a standard non MPPT CC.
Jay Peltz power On Oct 11, 2012, at 10:04 AM, Allan Sindelar wrote: > Wrenches, > 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. > 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. > > 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. > > Any advice you can offer? > > Take care, > Carl > > Carl Bickford > Professor of Engineering and Renewable Energy > San Juan College > 4601 College Blvd. > Farmington, NM 87402 > 505-566-3503 > bickfo...@sanjuancollege.edu > > >
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