Sunday, March 14, 2021

[electricboats] Sizing motor for 45-50’ boats

So it seems clear that the motoenergy 10kw + sevcon gen4 combo (thunderstruck kit) works great for boats in the 30'ish range, more or less replacing motors around 20hp or hull speeds from 5-7kt.

Now I'm interested in skilling-up to take on conversions of larger boats.

Those of you with 40-50' boats, 60-150HP diesels, what are you using to re-power? At higher voltages, what are the power curves like? Will a 72v motor draw 600a at top speed (and thus need a *much* larger bank than our 48v systems)? Anyone experimenting with multi-input/single output transmissions and multiple smaller motors (eg run two 10kw 48v side by side)? What are the best chargers for 72v/96v systems?




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