If you care more about the braking effect than the regen charging function, plug braking may be your answer. Also called dynamic braking, it's very similar in effect to regen, but instead of putting that energy back into the pack, you burn it off as heat in a resistor bank.
Not easily done with a series DC motor for the same reasons regen isn't easily done, so you'd still need some offboard generation device that can be "switch" into the mix to give you the braking effects. Then you're also carrying lots of extra weight to support that system, so your range goes down as well.
So long as your brakes can stay cool enough going down those hills so as not to fade and lose braking efficacy, I'd say just use the brakes unless you're willing to go all the way to build a proper regen system; otherwise it doesn't make sense to carry any additional weight to support the effect.
Not easily done with a series DC motor for the same reasons regen isn't easily done, so you'd still need some offboard generation device that can be "switch" into the mix to give you the braking effects. Then you're also carrying lots of extra weight to support that system, so your range goes down as well.
So long as your brakes can stay cool enough going down those hills so as not to fade and lose braking efficacy, I'd say just use the brakes unless you're willing to go all the way to build a proper regen system; otherwise it doesn't make sense to carry any additional weight to support the effect.
