Our grid-tied inverters just mostly shut the solar panels down when the grid is down. As long as the sun is shining we have two special outlets that will have power after we switch them on to power them. These special outlets have no power when the grid is working. When the grid is back up we then switch those outlets back off and plug freezer back into a regular outlet. This solar module/inverter system was installed in 2014.
On Wed, Aug 14, 2019, 2:06 PM paul dove via EV <ev@lists.evdl.org> wrote: > I thought grid tied inverters shutdown the solar panels when no grid power > is detected. > > > On Wednesday, August 14, 2019, 12:50:01 AM CDT, Cor van de Water via > EV <ev@lists.evdl.org> wrote: > > All grid tie central inverters (so, not the micro inverters) take input > voltage above 400V so they can direct switch the AC output without > transformers. Input is typically up to 1000V these days. > I plan on installing solar strings of at least 400V so that I can always > charge my EVs by direct wiring the panels to the battery, in case there is > no grid and I need energy in my EV. > I also have a large UPS that is intended to run with 2x 192V lead-acid > batteries (it is an older model double conversion UPS) so I am planning to > connect it to a Leaf pack with center tap so it can both charge the pack as > well as island like any UPS to feed any critical loads in the house. I need > to see if it has the power saving setting where it is not always double > converting (wasting power) and just keeps the battery charged, but feeds > the incoming power through until there is a power loss, then it instantly > starts converting battery power to output without even losing the output. > With such a setup, it would be possible to use solar in 2 ways: DC only to > directly charge the UPS batteries (but needs overcharge protection and > waste power as soon as batteries are full) or the usual string inverter > generating AC to feed back into the grid and independently run the UPS to > keep the batteries charged and generate uninterrupted power. Only drawback > is that during an outage, the solar inverter trips and does not generate > power, but this should happen only rarely. > > Cor. > > Sent from Mail for Windows 10 > > From: Robert Bruninga via EV > Sent: Tuesday, August 13, 2019 7:06 PM > To: Electric Vehicle Discussion List > Cc: Robert Bruninga; jkenny23 > Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) > > Thaniks. Yes, I got it wrong. I updated the web page . > > So now a use leaf is about 2.3 power walls but a bit over half the price. > Thanks for the tip. > > bob > > -----Original Message----- > From: EV <ev-boun...@lists.evdl.org> On Behalf Of jkenny23 via EV > Sent: Tuesday, August 13, 2019 6:31 PM > To: ev@lists.evdl.org > Cc: jkenny23 <jkenn...@gmail.com> > Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) > > Minor correction, your 3 year old Leaf is only 30kWH max (with less > actually usable, limited by on-board BMS). It would only take a bit of > clever reverse engineering to make use of ChaDeMo capable Leafs by > controlling the contactor to close and feeding a high voltage solar grid > tie inverter (I believe there are models that can use up to 400V already). > Then you could use up to 20kW comfortably. > > -- > Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.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) > _______________________________________________ > 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) > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190813/7ad6c2b3/attachment.html > > > _______________________________________________ > 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) > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190814/9797a9d5/attachment.html > > > _______________________________________________ > 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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190814/0d2a8503/attachment.html> _______________________________________________ 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)
