theothertom
Well-known member
Some EV's (Bolt, Leaf) have more than one regen mode whereby the amount of regen can be more or less aggressive. According to my limited understanding, regen is produced as the magnet in the electric motor (rotor) is turned by the wheel, and produces a force in opposite direction to the wheel turning (Flemings right hand rule ?), thus generating electricity and slowing the car down. What I don't understand is how this force can be varied. I guess I know just enough to be dangerous...can someone educate me? thanks