Friends: Again, welcome to the world of PV design.
I suggest one become accomplished at analyzing IV curves for various PV strings. I created a spreadsheet that helps me analyze these values. You can then see if you can mix and match modules to find workable solutions.
I recently was asked to upgrade a system with a bunch of Arco modules. I found that if I mixed strings of I believe 3 or 4 Arco modules with strings of 1 or 2 Solar World modules (exact quantities escape me), I had a pretty good match. We connected these to an MX60. After install, we tested MPP parameters and charging rates of each string individually and the strings combined and we found the system worked pretty well.
Good luck, William Miller _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & 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
