Quote:
Originally Posted by cRiPpLe_rOoStEr
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It's tough to get enough horsepower out of 48V.
1 Hp is about 750W, or around 15 amps at 48V (15 amps works at 50V).
10 HP - 150A
100 HP - 1500A (!!)
The transistors used do have some losses. Power relates to the square of the current. So your cooling system has to get rid of all that heat.
Golf cart style vehicles top out at 500 - 1000 amps for a few seconds, and run in the 100 - 200 amp range when cruising.
I don't think that a freeway vehicle can get enough current out of 48V for long enough to matter. The VW beetle used to get up to 55 mph with .. was it 30 HP? Not many vehicles around that light or with decent aero ...