Nicholas Lewis
Established Member
That is a potential positive in avoiding the braking resistors being used but that would necessitate the units being set up to use the batteries every time they accelerate otherwise they won't be partially discharged to accept regeneration. Also this will significantly increase the cycling of the batteries compared to running a few stops beyond the electrified network and certainly degrade them faster than working them just off the juice. Be interesting to know whether this mode of operation minimise overall energy use given the network will be very receptive in the central area with frequency of trains. Shame we don't the technical inside knowledge these days that you would get from papers or presentations to learned institutions that i regularly read or heard through the 70/80's.The weight is offset by the ability to use regen for all braking rather than only if another unit is in section and accelerating. That, not expansion, is the main reason.