Circuit for electric vehicle? Regenerative braking / free-wheeling?

I'm working on a circuit for an electric trike I plan to build for the local EV challenge competition. I plan to incorporate regenerative "free-wheeling" to recharge the batteries on the down hill sections. S1 closed and S2 open to accelerate the vehicle. S1 open and S2 closed to recharge the batteries while freewheeling down hill. Batteries: sealed lead acid batteries 12V or 24V (depending on motor) Motor: brushed DC motor Would this kind of circuit work? Is it possible to recharge SLA batteries in such a way? Any help and/or suggestions is appreciated. PS. I know it would also be possible to implement regen braking using a full H-bridge, but i think we would be doing more freewheeling than braking on the race track.

Question by mulan2015 5 years ago  |  last reply 5 months ago


MIT Unveils 90 mph Solar Racer

A solar-powered car that can go 90 mph? Sweet!MIT's latest solar race car might look like a funky Ikea table with a hump, but don't laugh. It'll do 90 mph and is packed with technology that may end up in the hybrids and EVs the rest of us will soon be driving.The university's Solar Electric Vehicle Team, the oldest such team in the country, unveiled the $243,000 carbon-fiber racer dubbed Eleanor on Friday and is shaking the car down to prepare for its inaugural race later this year."It drives beautifully," said George Hansel, a freshman physics major at the Massachusetts Institute of Technology and a member of the team. "It's fun to drive and quite a spectacle."Eleanor is slated to compete in the tenth World Solar Challenge, a seven-day race across nearly 2,000 miles of Australian outback. Link

Topic by fungus amungus 10 years ago  |  last reply 9 years ago