3 ms·
Some electric trains actually do this, they dump the energy as heat in a bank of resistors. The motor on a tesla is on the rear axel, but most braking power is
by dmmalam 13y ago
Some electric trains actually do this, they dump the energy as heat in a bank of resistors.
The motor on a tesla is on the rear axel, but most braking power is dissipated from the front axel due to the weight transfer. The question is if you also had a front axel motor (like the Model X), how much regen could you do. I remember reading somewhere that induction motors don't regen that well at low RPMs, hence you need to supplement with friction brakes. Anyone with a better understanding care to comment; would it be possible to build a car with no friction brakes, just 100% regen? I suppose you could always apply a counter torque to the motor.
- jstanley 13y ago"would it be possible to build a car with no friction brakes, just 100% regen?" No. The force provided by regenerative braking is proportional to your speed. Without friction, it would be impossible to reach 0 speed.
- dmmalam 13y agoSo the regen force would still exist (?), just it would be really small, and so taking a long time to fully stop. Would it be possible to apply a reverse torque to the electric motor to decelerate faster. For example, I'm thinking about a hypothetical race car that could have no traditional hydraulic braking system to save weight, a large amount unsprung.