I have been a frequent reader of this forum for quite some time now, and I have to admit it is really awesome. I tried to get by with some local forums
, but no way to get the information one is provided with here! Thank you!!
However, even after some weeks of extensive digging (still chewing on HandyBob's Blog « Making off grid RV electrical systems work
though), I still have some questions left over for my project-and I hope you can help me.
I have to set up a 47 feet sailboat for a 3 year trip for 2 people (as far as possible without staying in harbours) by myself, and want to install some solar
The basic (planned) system is now as follows, after some calculating and estimating and extensive reading:
-4-5 230W solar panels
mountet on a rack (simple setup, just a bar so you can turn them around it in the back of the boat-never seen this anywhere-why??), set up parallel to avoid shading issues. More specifically: 230wp 7.22 Imp, 18Vmp).
Batteries, split up in two 250AH set parallel
-the built in engine
-lead batteries (last owner) of about 300Ah
Where I get stuck is the setup of the charge controllers...at least (who knows what else I forgot-oh yes, a fuse (behind, as they say) the solar-battery circuit).
I figured MPPT
might make some sense here. But how?? People say a controller for every panel is best (or maybe every two might suffice). But:
-If I hook up the chargers all seperately to the battery
bank, is that the right thing? Or do I have to join them before?
-But then how do I charge the lead batteries and the AGM
batteries, with a switch to charge only one type at the time?
-And how do I get the engine
to charge if I have to add some juice when in lack of sun? Just join it's outut it in the solar
I would really appreciate any help-and promise to contribute back, maybe even opening a project
with full documentation
once it is done.
Thank you so much in advance,
Ps: Hope I didn't overlook some other awesome post that already explains this all-tried to google
, tried to follow every link, but didn't nail it down yet.