No reason why it wouldn’t work, though I do wonder whether an electrical system could ever deliver the phenomenal braking power modern aircraft brakes develop. It’s a normal occurrence to see brake temperatures nudging 450C about 20 minutes after landing – having said that, if this could be captured and not pumped into the atmosphere by the brake fans it might be useful.
Bit of number crunching suggests that each brake unit would need to be able to capture about 2MW during the landing roll. Taxi out? Well, the APU can only supply 90kW and is at 30-40% load just running the normal electrical system, so assuming even 45kW available it’s not going to be quick. Again, back of the envelope maths suggests 30 seconds continuous acceleration will get you to about 11 mph, which is going to royally piss off* the queue behind you at places like Amsterdam, where normal taxi speeds are about 35 mph.
So it’s a nice idea, but I’ll eat my shoes if it ever comes to fruition.
* I know this because I once pootled along at 15 knots and was ordered by ATC to pull onto a parallel taxiway to let the plane behind overtake. Highly embarrassing.
