Well - as mentioned before, at least one vendor claims to do just that for off-grid systems:
"What is the IPN Network
Blue Sky Energy created the Integrated Power Net™, or IPN Network to provide both a charge controller communication strategy as well as create the next generation of Solar Boost MPPT charge controllers. The advanced high speed digital network, allows up to 8 IPN capable charge controllers to communicate with each other and operate as a single machine rather than separate charge controllers. The IPN Network also allows networked controllers to share an optional battery temperature sensor and remote display. The IPN Network does not require an additional controller, display or other special communication hardware or software to operate."
http://www.blueskyenergyinc.com/
I've no idea how valid the claim is but fwiw they did win an award from an RV magazine.
Nick
From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com] On Behalf Of oak
Sent: Friday, July 26, 2013 8:36 AM
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] Multiple source charge controller?
Ok, but it at least allows you to pull from multiple devices simultaneously.
I would be surprised if anyone had a device that could mix and match multiple sources and get peak efficiency from each - though that would be great!
As mentioned, the micro-inverters sound like the closest thing to that - but they don't (yet) exist for DC (that we know of).
John
From: Kirk McLoren <kirkmcloren@yahoo.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Friday, July 26, 2013 10:20 AM
Subject: Re: [Electric Boats] Multiple source charge controller?
simpler but doesn't extract maximum power from several devices with different criteria.
From: oak <oak_box@yahoo.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Friday, July 26, 2013 8:11 AM
Subject: Re: [Electric Boats] Multiple source charge controller?
Wouldn't it work to run each power source (except for grid battery chargers) through a diode, and then the parallel of the diode outputs into a single charge controller??
From: Kirk McLoren <kirkmcloren@yahoo.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Friday, July 26, 2013 9:38 AM
Subject: Re: [Electric Boats] Multiple source charge controller?
I suppose the proper way to do it is feed each source into a maximum power point tracker and sum the outputs of those into the battery pack. They all share the same battery algorithms so sharing should not be a problem. If the battery is in danger of overcharging the propulsion motor is a convenient load, unless conditions don't permit it.
From: John Scott <flyscott06@gmail.com>
To: electricboats@yahoogroups.com
Sent: Thursday, July 25, 2013 4:43 AM
Subject: Re: [Electric Boats] Multiple source charge controller?
This is a great company. Lots of good info
http://www.mwands.com/ missouri wind and solar. They have the systems you are looking for. Good luck.scotty
On Jul 24, 2013 11:06 AM, "qgold77" <qgold.77@gmail.com> wrote:
Hello - an old lurker here, but have a quest I'm sure a wise person in this group can help with. I'm looking for device that will take inputs from multiple power sources such as wind/water/solar/shore power/on board generator etc and control the the charging of a couple of battery banks. Can anyone give me a lead?
Thanks - Nick
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