Sorry, I should proof read my posts. I would want to see the onboard charger design.
Sent from my iPhone > On Aug 15, 2019, at 6:38 AM, paul dove via EV <ev@lists.evdl.org> wrote: > > Probably be fine but I would was to see the design of the on board charger to > be sure. I used an AC to DC converter to make 12v for my EV conversion. My > battery voltage was 170v and it worked just fine. > > Sent from my iPhone > >> On Aug 14, 2019, at 8:51 PM, Robert Bruninga via EV <ev@lists.evdl.org> >> wrote: >> >> Amen! We all want direct DC to charge. But so far, I have not seen any DIY >> approaches. >> What I woiuld love to see someone do is feed DC into their EV using their >> existing J1772 EVSE. >> >> As long as it is a 120v EVSE that does not use a tiny 12v transformer for >> its internal electronics, then it should be fine. And the car "should" be >> fine because the first thing it will do is full wave rectify the DC. And >> since EVSE do not communicate voltage, but only current, then full wave >> rectified 240 VAC is 330 VDC and so feeding 330 VDC directly from the panels >> via the EVSE "should work fine" and charge at the 12 amp limit of the EVSE >> for over 4 kW! >> >> Every modern universal 120v device I have tried works as well on 300 VDC as >> it does on 120v AC. >> >> But who is the fool to test it on their $15k car? >> >> Bob >> >> -----Original Message----- >> From: EV <ev-boun...@lists.evdl.org> On Behalf Of George Tyler via EV >> Sent: Wednesday, August 14, 2019 9:21 PM >> To: paul dove via EV <ev@lists.evdl.org> >> Cc: George Tyler <g...@tylernz.com> >> Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) >> >> I have been considering this too, seems silly to convert the solar panel >> power to 50/60Hz AC, into the Leaf, then to DC to charge the batteries >> again! I am thinking it would be better to have solar always below 360V >> (lowest leaf battery voltage) and a boost converter or isolated topology to >> charge into the Chardemo port. Boost would mean it does not have to handle >> all the power, but I am a bit nervious of having the leaf battery >> galvanically connected to the panels! Electronics would be very similar to a >> Chardemo charger I guess, will have to have can bus etc, but then you can do >> all kinds of other things that will help, like set the charge level to >> anything you like, V to G, etc too. >> >> >> >>> On 15-Aug-19 6:33 AM, paul dove via EV wrote: >>> I mean from the solar panels, disabling them. >>> >>> >>> 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/20190813/7a >>> d6c2b3/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/20190814/43 >>> ed784c/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) >>> >> _______________________________________________ >> 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) >> > > _______________________________________________ > 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)
