EVDL Administrator via EV wrote:
Is it more expensive to design semiconductors to switch 10 amps at 12 volts, or 0.4 amps at 300 volts? That's not a rhetorical question: I don't know.
You generally pay by the watt. Similar price to switch 12v at 100a, or 120v at 10a, etc.
You could regulate the accessory bus.That would provide the side benefit of allowing a range of nominal voltages for the traction battery while standardizing accessories at, say, 100 volts. But if you're going to do that, I guess you might as well just "regulate" it down to the now-standard 12v.
The "accessory" outlet would still need to supply 12vdc. That's a legacy that we'll be stuck with for a LONG time (another century at least).
I'm mainly thinking of power for all the accessories that are built into the car; heater, air conditioner, lights, wipers, etc. These can be designed for whatever the pack voltage is.
-- "IC chip performance doubles every 18 months." -- Moore's law "The speed of software halves every 18 months." -- Gates' law -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
