Series Resistance Measurement of Solar PV Modules Using Mesh in Real Outdoor Condition

Abstract This work presents an analysis of three different methods to determine the series resistance, Rs of different PV technologies and to find the most reliable method under real operating conditions. The methods under consideration are: single slope method, one curve illumination method and mesh analysis. The interpretation of series resistance is done for 18 different solar PV modules containing CdTe, CIGS, mono-crystalline and multi-crystalline silicon modules. The reliability of this method under outdoor operating conditions is also studied. The series resistance measurement using mesh analysis is the most reliable and robust way to determine the series resistance in real field operating conditions.