This is interesting- but it seems there is a simpler way to accomplish this isn't there? Replacing the rotor windings of the alternator with magnets would make a nice PMA that could easily keep the battery charged, the battery would clamp the voltage at approx. 13V and alt. output above the battery's clamping voltage is seen as amperage increase relative to rpm and available to the reactor at stable voltage, but current levels directly proportional to engine rpm. I realize this method doesn't appeal to all, but to those more comfortable with mechanical solutions rather than electronic, it offers an alternative solution.