Commonest failure? Really? Toyota claims better than a 180,000 mile lifetime and I know there are taxis that have more than 300,000 km on them which suggests stop and go isn't a huge issue. I have an EPRI report that also reached much the same lifetime conclusions.
Robert
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Sure.
You're not looking at the problem the right way. :^) You're trying to accelerate the mass of some vehicle from zero speed to whatever speed with a motor, (which requires some particular amount of power), then decelerate the same mass back to zero speed at some point, which requires that you remove that same energy, (minus losses from friction, etc, of course) away from that same mass. Normal brakes use friction to turn that energy into heat, & dump it into the atmosphere. With regenerative braking, you're trying to put as much of that energy as possible back into your original power storage device, instead of wasting it. (Saving power, reducing heat output, & reducing wear on the braking system, all of which are Good Things.) In other words, if your vehicle is big enough for an electric motor to be worth having in the first place, there's no obvious reason that regenerative braking wouldn't be useful, if you can make it work.
-- W "Some people are alive only because it is illegal to kill them." . | ,. w , \|/ \|/ Perna condita delenda est ---^----^---------------------------------------------------------------
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