So I have an electric boat with a 48V LiFePo4 battery and a multiplus II 48/5000
Ideally I would place 3-4 flexible solar panel in series to create the required voltage and use a victron MPPT. However, shading of the panels will become a huge issue on my boat and also the placing&cabling is challanging.
Therefore, I dived into AC coupling and I want to use a single fixed solar panel with a micro inverter). The micro inverter I am looking at support Island mode: https://enphase.com/installers/microinverters/iq8 The article on the victron website about AC coupling states that it will not work on a boat https://www.victronenergy.com/live/drafts:off-grid_documents:choosing_dc_and_or_ac_solar
My question is, why wont it work on a boat? What is so different than a other offgrid situation?
Other questions I have are:
Does the multiplus sync to the micro inverter, or does the micro inverter syncs to the multiplus?
I have my multiplus set in AES mode to limit stand by power consumption, is that possible using Island mode?
Of course another solution is get a MPPT Boost module (which Victron does not sell). But I prefer not to, or do you think that is the way to go? I don't how that works when the multiplus charger is on and the MPPT is still delivering power.