The curve below is for a general electric motor drive(I'm guessing DC motor/possible 3phase induction). Would it be right to say that power generated in regenerative braking is the area under the curve in the 2nd quadrant ie the -ve M and +ve n(quadrant)? There are 2 portions of the diagram. The upper white portion symbolises overdrive in a electric motor. I guess this is not at rated power but at maximum power,since P_max≠P_rated. 2.Regenerative braking would not gain energy in this area,am I correct? http://imageshack.com/a/img46/5958/91vr.gif [Broken] Also,if looked at in a more accurate way,there is a additional 3rd portion which is the normal drive.