I have a question I have been wondering about for a while regarding regenerative braking on electric vehicles.
If my understanding of electrical motors is correct
In a perfect world with no friction or noise, the amount of power put into a motor should equal the amount of power that can then be taken from the motor. That is to say, if you accelerate to 60 mph in an electric vehicle, and then take your foot off the gas and come to a complete stop, the amount of power generated should be the same as the power spent (again assuming no loss in this perfect world).
Does this concept work the same with torque? Would the maximum amount of torque that a motor can output, be equal to the max amount of torque that the motor can generate?
If this is the case, how can electric vehicles brake "more" with regenerative braking? What is the electrical system that controls how much power is allowed to be generated by the motor?
I would imagine that taking your foot completely off the gas would be the maximum back torque and maximum regenerative braking (obviously putting negative charge through the motor to slow it down makes no sense for regenerative braking!). And yet, electric vehicles allow you to brake harder or softer, charging the battery more or less.
Any insight on this is greatly appreciated! This is a difficult question to word given my limited knowledge, please ask for clarification if I have not articulated enough.