We have done a number of off grid AC coupling projects over the last eight years. We have found they are successful with anything that comes close to a true sign wave, including some of the old Trace inverters. I would be careful to not come too close to the wattage of the source inverter, and keep in mind that your battery charging is only one stage (bulk), and might not be the best choice without another charging source (i.e. the grid, or a semi regular generator). I can't say it makes a lot of sense, but when we have tested grid tied inverters and charge controllers side by side, the GT inverters produce significantly more than any CC's on the market.. Any more, I think that it is a better design to have the larger array tied to a GT inverter, and a small array tied to a charge controller for absorb and float charging...Just sayin.
Lars Ortegren Director of Operations California Solar Electric Company 10141 Evening Star Drive, Suite 6 Grass Valley, CA 95945 http://www.californiasolarco.com/ Phone : (530)274-3671 Fax: (530)274-7518 California C-10 Electical Contractor #779624 NABCEP Certified PV Installer # 091110-89 Certified NABCEP Continuing Education Provider _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
