Quote:
Originally Posted by johnrobholmes
Using a MMM on the generator side would be a horrible idea IMO, the efficiency is not there for generator use.
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Now why would you say that? The efficiency is pretty good actually, it's just not optimized for generation.... but neither is a 3 phase bridge rectifier either. Above about 35% braking the motor starts dissipating a bit of power as the phase currents get really high -- and that causes a loss of efficiency.
The main difference is that a bridge won't ever BOOST the voltage for the battery -- if the battery voltage is lower than the motor EMF voltage, the bridge won't do a thing. An active boost brake (like on the Monster) will boost the voltage higher to charge the battery.
Patrick