Hi Allan I have a client who did indeed install Tigo with a outback CC and it all works well
I don't recommend it for the boat. Too much to go wrong. Jay Peltz power Sent from my iPhone On Oct 15, 2012, at 12:46 PM, Allan Sindelar <al...@positiveenergysolar.com> wrote: > Dan, > I checked out the Tigo website, and found nothing there to suggest that these > were intended for off grid battery charging applications. A round-the-world > sailboat is off grid. Are you suggesting that these will work in battery > charging applications? If so,this is news. Do you have any more info you can > share with us about this? > Thanks, Allan > > Allan Sindelar > al...@positiveenergysolar.com > NABCEP Certified Photovoltaic Installer > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder and Chief Technology Officer > Positive Energy, Inc. > 3209 Richards Lane (note new address) > Santa Fe, New Mexico 87507 > 505 424-1112 > www.positiveenergysolar.com > > On 10/11/2012 2:58 PM, d...@foxfire-energy.com wrote: >> Check out Tigo Optimizers: >> >> http://www.tigoenergy.com/ >> >> db >> Dan Brown >> Foxfire Energy Corp. >> Renewable Energy Systems >> (802)-483-2564 >> www.Foxfire-Energy.com >> NABCEP #092907-44 >> >> From: re-wrenches-boun...@lists.re-wrenches.org >> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan >> Sindelar >> Sent: Thursday, October 11, 2012 1:04 PM >> To: RE-wrenches >> Subject: [RE-wrenches] Fwd: Charge control question >> >> 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 >> >> I offered the suggestion below. Certainly open to other and better ideas. >> Allan >> >> I have not encountered this situation, so I have no advice from experience. >> At 12V, it's hardly an issue as it is with high voltage parallel strings, >> where a few shaded cells can cause a whole string to drop out of the >> inverter's MPPT. At most, a shaded cell weakens the output of that module. >> And since it's charging batteries, there's a greater amount of head room. >> >> I would suggest looking into Blue Sky Energy's "i" series - smaller MPPT >> controllers that can be networked. We seldom use them, as our residential >> applications are different. But you could put a controller on a group of >> modules and network several together. One advantage, I think (you'd want to >> check this) is that Blue Sky's MPPT algorithm is analog, unlike Outback and >> others: on the old Solar Boost series, the MPPT boost was set with a trim >> pot to a particular voltage above battery voltage; the target is to set it >> to where the boost was greatest. You could set this boost slightly lower >> than peak, and output just a little below MPP. That way the overall output >> would be minimally reduced, and a modest amount of shading would not cause >> the shaded module to drop below collective MPP as readily. >> >> Allan Sindelar >> al...@positiveenergysolar.com >> NABCEP Certified Photovoltaic Installer >> NABCEP Certified Technical Sales Professional >> New Mexico EE98J Journeyman Electrician >> Founder and Chief Technology Officer >> Positive Energy, Inc. >> 3209 Richards Lane (note new address) >> Santa Fe, New Mexico 87507 >> 505 424-1112 >> www.positiveenergysolar.com >> >> >> >> >> -- >> This message has been scanned for viruses and >> dangerous content by Hudson Valley Computer Services, and is >> believed to be clean. >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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