Caltech has a smart EV charging garage that controls 70 EVSE's, granted only level II - http://www.caltech.edu/news/smart-charging-network-evs-installed-caltech-50567
link to data http://ev.caltech.edu/ Rush Dougherty Tucson AZ 85719 > -----Original Message----- > From: EV [mailto:[email protected]] On Behalf Of Peri Hartman via EV > Sent: Wednesday, February 07, 2018 4:43 PM > To: Electric Vehicle Discussion List > Cc: Peri Hartman > Subject: Re: [EVDL] Fast Charging... (Flywheel?) > > Interesting thought. It might be a good alternative. > > But I'm thinking that a large battery (e.g. 100kWh) is cheaper, or at least will be soon. I don't > think one needs larger storage than the largest battery needing a charge. The advantage of > an on-site battery or flywheel, as I think you imply, is to allow a very rapid charge without > putting an excessive load on the power service. > > What will happen, though, if a service station has 10 or 15 ESVEs, which I think would be > realistic along freeways. During times of high occupancy, the overall load will be more > uniform. Someone will start charging, someone will stop. Meanwhile, 10 other cars will be > drawing full power. So, the starts and stops become less significant. In fact, I suspect a little > math would show a battery roughly equal to the capacity of one car is sufficient regardless of > the number of ESVEs. > > Anyway, it comes down to which costs less. Again, I'm pretty sure battery technology will > usurp anything mechanical. > > Peri > > ------ Original Message ------ > From: "Robert Bruninga via EV" <[email protected]> > To: "Electric Vehicle Discussion List" <[email protected]> > Cc: "Robert Bruninga" <[email protected]> > Sent: 07-Feb-18 2:30:23 PM > Subject: [EVDL] Fast Charging... (Flywheel?) > > >https://www.greencarreports.com/news/1115199_what-electric-car-charging > >-will-satisfy-a-mass-market-twitter-poll-results > > > >I wonder how big a flywheel is needed to store the energy to charge a > >250 > >mile range in 20 minutes? > >Since it is fixed, and does not have to be in a vehicle, it might be > >the answer to large charging stations. > > > >When ten TESLAs pull up at ten fast charge cords at the same time, that > >is over a megawatt of needed power... in 20 minutes... > > > >Bob > >_______________________________________________ > >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) > > > > _______________________________________________ > 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) > > > --- > This email has been checked for viruses by AVG. > http://www.avg.com _______________________________________________ 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)
