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on a DC motor and controller doing regen the controller is basically shorting out the motor briefly to build current, then releasing it - which gives a voltage spike when the magnetic field collapses. That spike goes to the battery pack via the freewheel diodes, and different duty cycles can give m...

Hi EVLearner, There are many things going on at once in the AC EV situation. To explain AC regenerative braking let's start with the simpler situation of a 2-pole 3-phase induction motor direct on line at say 415 V 50 Hz. Actually, let's simplify it a little more and give it a permanent magnet rotor...