Quote:
Originally Posted by Winfield1990
So why did you say with AC you could run it without a transmission since DC you could do the same
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3 phase AC = no multi-geared transmission.
That alone makes the efficiency favor AC.
Most AC motors are designed with a flatter torque curve
whereas DC motors tend to peak really low then fizzle.
I've seen cheap AC namely the golf kart series motors with peaky efficiency too. And all AC motor graphs I've seen lose a lot of efficiency once they start to pass 5k RPM.
Brushless DC can do regen too but I've yet to seen one over 30kw.
As for drag racing, I've seen more favoritism towards DC. Most production cars in the works are going with AC and Sports cars just use larger AC motors. So if you wonder which is better for daily drivers, an AC motor with 1 speed transmission would get the most range. Finding one affordable for the DIY is possible, the monster Golf Cart motors should be big enough for a compact. If you're going to build one, good luck with that
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