Hey wrenches, Does anyone have any guidance to which values to use when testing open circuit voltage on bi-facial modules, considering you take the temperature reading from the cell vs. the back sheet? Also, what would be the correct module Voc to use since there are values for both the front and back?
405W Module: Front/Back Pmpp: 405 / 285 Vmpp: 40.89 / 41.10 Impp: 9.91 / 6.94 Voc: 48.42 / 46.99 Isc: 10.38 / 7.28 Module efficiency: 19.7% / 13.9% Temp coefficient Pmpp: -0.3528%/ºC Temp coefficient Isc: +0.0400%/ºC Temp coefficient Voc: -0.2769%/ºC Nominal: 44+/-2ºC I was using the front Voc and Voc temp coefficient, but I am getting some results which are not in line with the 5% of expected. Jason D. Kechijian, LEED AP NABCEP Certified PV Installation Professional™ _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
