Many solar inverters can be (user) configured to do different types of optimization, so they can be adapted to different solar panels and even different inputs (wind, battery bank) but I did not see which inverter you use, so it is not possible to say if *your* inverter can handle batteries as a source. Some (cheap) PV optimizers short-circuit the panel when they do not need the power from it. Obviously that is a bad idea when using a battery as the source instead of a solar panel.
Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.com Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Ben Goren via EV Sent: Sunday, December 21, 2014 1:08 PM To: John Lussmyer; Electric Vehicle Discussion List Subject: Re: [EVDL] OT: batteries for solar PV off-grid On Dec 21, 2014, at 1:53 PM, John Lussmyer via EV <ev@lists.evdl.org> wrote: > Actually, bad assumption. Many/Most PV Inverters don't like being fed from batteries. Throws off their attempts to find the Max Power Point. I didn't know that. Would it matter that the batteries would mostly be feeding the inverter only when the panels aren't producing? > Also, PV inverters are more expensive than "regular" inverters. Well, the system is already in place and has been for a few years. I've already got the inverter, in other words. Seems like, unless it's likely to do bad things, it's better to spend no money on a less-than-perfect but still-usable solution, than to spend more money to get a better version of something I already have that'll work. So...is it a matter of this not being the ideal way to design the system if starting from scratch, or of this being something that's workable at all? Or...are "regular" inverters so inexpensive relative to the total battery system cost that I'm being silly for not considering one as part of the cost of the system...? b& -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: Message signed with OpenPGP using GPGMail URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141221/e332 5647/attachment.pgp> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use 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 For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
