On Sat, Mar 9, 2013 at 12:21 PM, Bruce EVangel Parmenter <bruce...@operamail.com> wrote: > I would hope as EVSE crowding occurs, Blink would allow the host to > limit l3 use to only 80%SOC, so that anyone wanting a 100%SOC charge > would move over to the slower l2 EVSE next to it. The AeroVironment l3 > installations in WA and OR also have a l2 EVSE next to it. This frees > the l3 up for the next driver to charge up to 80%SOC quickly, and get > back on the highway.
I think a better plan is to simply charge by time plugged in. This would encourage people to only take the charge they need before moving on. Even if you stop charging, you will find people who abandon their car for hours hogging a spot and QC cables tend to be so short they can only reach one parking spot. > This only charging to 80%SOC has reduced the range, and if you include > the normal 10 miles of safety (to fin the EVSE or turn around because > you missed the turn off), most 75 mile range EVs would really run > between coming in with 10 miles left, and charging to 80%SOC (60 miles). > That means, l3 installation planners need to install them less than 50 > miles apart. I think 30-40 mile spacing is more reasonable - it gives you more room for buffer. Ideally I think you'd put them even closer together, every 15-20 miles, primarily so that you can skip a station should one be down or perhaps perform even more frequent, but smaller charges along the way. And yes, having L2 stations in addition to the QC station is important for a couple reasons - for backup should the QC not function and to provide additional infrastructure for non-compatible QC capable vehicles. Make the L2 stations 80A capable - or at least 40A capable - these would be very useful for the Teslas and RAV4-EVs currently on the road given that those vehicles can charge at least 40A and most L2 public infrastructure is currently only 30A capable... -Dave _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
