Isn't there quite a large 270VDC system on the 787? Read somewhere that airbus was going down that route as well for some systems in upcoming airplanes.
Mid to long range power transfer via DC lines seems to be more and more en vogue nowadays, there is currently quite some discussion about it over here to transport all that wind energy from the north of the country to the south, windy north and industrial south.
Also big computer farms are often run on 12VDC as that saves all those TRs in each computer/server, the need DC anyway. Seems to save a lot of energy.
Last edited by Denti; 29th Apr 2013 at 05:06.