Simple system, fairly standard practice:
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battery- Motor controller- motor
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generator - battery charger (or inverter/charger if 120vac is needed) - battery?
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solar panels -charge controller - battery
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a separate 12v system can be as simple as a dc-dc converter that converts traction battery voltage to 12v, but could also be a 12v battery with solar and a dc-dc to charge it from the traction pack, and a charger to run off the generator or shore power.?
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al three systems are basically stand-alone and can operate separately and simultaneously.
Voltage is decided upon based on power level but 12v means 4x higher amps than ?a 48v system and will need larger wires controller etc.?
again, 120v battery will be dangerous in a marine environment. 72v is used, but notice the level of protection and quality of components in a 400v EV, it is difficult to achieve safety at that high voltage.?
note that even with a 48v battery and 120vac you have to follow wiring and connection and grounding rules to not have safety and reliability problems.?
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anton
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