S Bengi wrote:Is your current system 450AHr times 12V = 5400WHr = 5.4kWHr
If so your future system will be 225AHr times 24V = 5400WHr = 5.4kWHr
S Bengi wrote:
But lets go with your quoted 450AHr times 24v = 10.8kWHr
You are going to need a generator that is outputting 45A * 24V = 1080W (1.5hp)
So the engine should be 1.5hp*2= 3hp
The alternator efficiency is 60% and it would be best if the engine was only at 60% so more like 1.5hp*3=4.5hp
Dillon Nichols wrote:What is the max output of the MPPT controller?
If it's at all likely to receive more power than this, what is the expected behavior when it has excess incoming power; burn up, or self-limit?
The below post mentions getting more than rated power from alternators used as described with an mppt controller; by virtue of the lack of a 24v battery connected, the alternator ends up putting out notably higher voltage. This is likely perfectly fine for the mppt controller, as long as the resulting higher amperage and hence higher wattage don't become excessive... or, if the unit is equipped to handle excess power by limiting output.
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