You could get a 120vac grid tie inverter. Those typically have a mppt front end that boosts or bucks to a nominal 180vdc before inverting to 120vac.
Connect the two 180v dc buses and you're good to go. Having a bit of storage capacity on that dc bus would be ideal for starting loads Sent from BlueMail On 6 Oct 2017 21:39, at 21:39, Robert Bruninga via EV <[email protected]> wrote: >I want to develop a way to charge an EV from a Solar array when the >grid >is down cheaply. > >My thiking is that typical modified sine 12v/120VAC inverters do their >inversion first from 12VDC to high voltage DC first, and then they chop >it >to make it modified sine. > >If that is the case, it should be possible to inject high votage DC >from >the solar panels at that same point and produce the same 120VAC. This >then can drive any standard 120v EVSE. > >We can tap into solar panels in increments of 30 VDC and should find >one >close. The problem will be the starting process to bring the VOC down >to >the Vmax that matches the HV in the inverter.. That can be done with a >trivial big resistive load a few caps and then transfer relay maybe. > >Thoughts? >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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20171007/09c7d857/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)
