ElectricMotorcycleForum.com

Tech => Tech Help => Topic started by: Bogan on June 23, 2009, 04:02:53 AM

Title: Regen Braking
Post by: Bogan on June 23, 2009, 04:02:53 AM
Has anyone had experience with the inner workings of regen braking. I am designing my own controller, with variable regen braking (done by PWMing the flyback FET at low duty cycle), firstly is this gonna work? the internet told me it would :P Secondly, what sort of currents will flow into the battery and is it possible to cause any damage, im running lead acid AGMs so i wud expect them to tolerate it better than others. I also have decoupling caps on the motor driver so it should take all the voltage nastys out before the betteries "see" them.
Title: Re: Regen Braking
Post by: Reaper on June 23, 2009, 04:23:33 AM
Has anyone had experience with the inner workings of regen braking. I am designing my own controller, with variable regen braking (done by PWMing the flyback FET at low duty cycle), firstly is this gonna work? the internet told me it would :P Secondly, what sort of currents will flow into the battery and is it possible to cause any damage, im running lead acid AGMs so i wud expect them to tolerate it better than others. I also have decoupling caps on the motor driver so it should take all the voltage nastys out before the betteries "see" them.

I'll let you know when I get done with my project (my controller is supposed to have regen).

But I hear mixed reviews coming from people I've talked to.  A lot of folks that I talked to said that the regen on their controllers (I think that they were referencing the Sevcon Millipak PMAC) was "so-so."  I am not sure what that means.  I am assuming that they got the batteries to recharge somewhat, but that recharge rate wasn't really substantial.

I know that's not of much help but I am still a newbie trying to learn the game :)