On 26 Feb 2019 at 21:48, Lawrence Rhodes via EV wrote: > I think the 300 dollars of caps would protect the pack and increase > performance.
Probably not all by themselves. The problem with capacitors is that, unlike batteries, their voltage falls rapidly as they discharge. What you're trying to do is exactly what Solectria did experimentally in 2000, but what they had that you haven't mentioned is the wide-range input DC:DC boost converter that kept the caps' voltage up where it needed to be as the caps discharged. http://www.evdl.org/docs/supercap_leveler.pdf The EEs here can correct me if I'm wrong, but I'm afraid that a DC:DC with that wide an input voltage range is going to cost you a bundle. And you will probably find, as Solectria did, that its efficiency isn't all that great. But you might scout around where the small Chinese industrial and hobbyist electronics manufacturers hang out (Ebay, Aliexpress, maybe Banggood) and see if you can find something usable, reliable and/or affordable (pick two). I've seen a few constant voltage regulator boost and buck/boost modules offered. Maybe you can find one that would work for you, at least until its magic white smoke escapes. :-) David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
