OK,
I don't understand the 12-48v reason. It would likely be less expensive to build two systems. I assume air-x makes a 48v generator. I know solar panels come in 48 volt config. A 48 volt inverter uses less power than 12 volt unit will. A dc to dc converter will power house loads for a fraction of what you would spend on a switch network.
Seems hard to me to work out a single arduino controller system for multiple inputs. Radio shack sells a proto board and a board that has traces on it that match the proto board. Digi-key sells atmel 328 ICs without the bootloader on them at around 5 bucks. Changing the flags on the chip will let you use them with internal clock. The arduino IDE can still be used to program them. SPICE can be used to proof circuit design before prototyping any circuit.
Because I am a Linux user I have access to some of the best circuit design software anywhere without an industrial budget. Of course you could be a linux user too by downloading the open source OS from Ubuntu.com
So to recap what I said, that you should remember:-)
You can build controller boards for less than 15 dollars US for each of your power sources and outputs. You can maintain a record of power levels in one main arduino that should control everything in the system, that in turn will accept arduino sheilds for better interfacing than if you were to start from scratch. You could even use the extra pins to power a buck boost dc to dc converter to power the house. Most people have trouble with multi-processing so make it easy on yourself, use more than one processor.
Now the reason you may not want to continue on such a path. Reliability, that's right, every circuit on the market has bookoo hours in development and testing time invested. Just to make you the customers voyage as trouble free as they can. Tested systems fail, DIY systems fail more often. I like building things. I would find little pleasure with a factory built system, but not everyone is me. That said I can hardly say I have saved money on all my projects. Many have been a pain in the backside. But I do have things that are one of a kind. I enjoy showing them to others and have them ask where they might find one, only to be told they will likely have to build one themself. A 300,000 dollar car fails to have that kind of braging rights, if your project is not being towed in all the time.
Kevin
Looking to build a battery management system and charge controller to work with multiple sources dc generator wind solar and shorepower when available.
The batteries are L16 used in series and parallel to get 800ah of 12vdc switchable to 200 ah 48vdc for propulsion.The sources are:700w air-x wind200w solar4 100amp alternator with external regulationThe only ac on board is the shore power converted to dcWill be building the system from scratch so considering many optionHave moderate skill level with electronicsCan use arduino for programmable control
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