Question

What is the maximum power in kW available for regenerative braking at the beginning of a uniform 10-second deceleration from 100 kph to a dead stop? How much energy (Wh) could be recovered by regenerative braking in a uniform 10- second deceleration from 100 kph to a dead stop?

Answer 1

Calculate the deceleration of the car. Calculate the distance covered before it comes to rest. S-u-12 -=138.78 m V=" 203 = 2a = 2(2.78) Calculate the drag force acts on the car. F.C.P.4,v= (0.31)(1.2)(28)( 1004 ) = 401.85 N Calculate the rolling resistance force acts on the car. Ư, BC,Mg =(0.009)(1616)(9.81)=142.67 N Calculate the maximum power available for regenerative braking. Whet resistance _ Fnet resistance S_ (Fo+f,)xS A A (401.85 +142.67)x(138.78) (10) = 7556.85 W 7.56 kW

Calculate the amount of energy recovered by regenerative braking. E, = Pxt=(7556.85)*(6016) +20.99 Wh