This is powering an electric car. I am trying to develop a method of regenerative braking. The idea about removing the internal diodes is a good one, but the AC voltage can be in excess of 200, of course it all depends on RPM, which will be dynamic. I would still need some sort of voltage regulator. I might be able to build a 120VDC voltage regulator and keep the diodes, but I don't know enough about how alternators or voltage regulators work. My experience so far is limited to designing ~5A 5V power circuits with switchers, caps, and inductors. How would several switching voltage regulators in series work? Would the wattage stay constant with only the voltage rising?