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Old 03-07-2017, 05:41 AM   #19
FF
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Join Date: Oct 2007
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I would hardly be worried about theoretical "efficiency" .DC would be my choice.

A good sized DC alternator like a DN 50 can create 200+A in the oldest 12v model, newer can do 250A of 24V.

These are available rebuilt fairly inexpensivly.

The ability of DC is two fold for the folks on board.

It can charge the Largest batt bank in the least amount of time .

It can also operate at low speeds when huge amps is not required

"With a DC generator the engine throttle should be linked back to the voltage regulator on the generator. This would create a varying RPM situation where the engine RPM would be what is necessary to produce the needed current. This may sound like a simple circuit to an engineer, but there is not a industry standard off the shelf unit to do this."

Folks have used std welding generator controls , yes, with some fiddeling.

The DC in higher output with a sine wave inverter can power air cond when required.

The same (expensive) inverter can boost power at a crummy dock to help air cond or laundry voltages.

I do value QUIET so a fast recharge and a slow running noisemaker would be first choice.Less stink too.

The new fancy Honda gas units operate by creating DC volts and use an inverter for good AC , and the partial load low RPM saves fuel too.
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