I agree that this isn't as complicated as it's being made out to be. My ideas on this last time it was talked about were 1) put relay inline with brake light circuit so the alternator only energizes during braking, just like real regen braking. 2) put another relay in electrical system that energizes the alternator when the system voltage drops to a certain level, like 11 volts. I still think this is all that needs to be done. This way you're only charging if you're braking, so you're wasting that momentum (energy) anyway, or when you're on the highway cruising, since you haven't been braking enough to keep the voltage up.
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