As I understand it, the DC output from solar panels is not at a fixed voltage, so you end up having to convert one DC voltage to another in order to power your house appliances. This DC-to-DC conversion isn't necessarily any more efficient than the DC-to-AC conversion that you would normally have to do. And the cost of buying new appliances than can deal with DC is not small.
There are other better ways of avoiding inefficiency, I think. One is that many panels are set up in series, which means that if any one cell is covered by shade, the output of the entire system is reduced. (Use a different inverter technology, and set up your cells in parallel, to avoid this) Another is that high temperature reduces the efficiency of cells. (One way is to put the entire system on top of water, which will limit how hot it gets) On Sun, Jun 5, 2016 at 7:29 PM, Larry Gales via EV <[email protected]> wrote: > If you build an off-grid solar house and use it for both your house and > charging your electric car, are there any disadvantages for using DC > current (household appliances can all be converted to DC) and avoiding AC > since you are off the grid? You avoid the cost, maintenance, and (slight) > inefficiency of inverters, but are there significant disadvantages to this > approach? > > Thanks, > > -- > Larry Gales > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160605/ac5420ed/attachment.htm > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > 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/20160605/48930d64/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
