First Results - Correlation Between IR Images and Electrical Behavior and Energy Yield of PV Modules

This paper gives an overview about the first results regarding the correlation between IR images of defective PV modules in the field and the corresponding electrical behavior. While electrical measurements of PV generators in operating PV plants are often very extensive, IR imaging gives a fast and effective method to find defects in PV modules. Daily profiles with one minute I-V curve measurements of different PV modules with thermal phenomena were done under outdoor conditions. Additionally continuous IR imaging and meteorological data sampling was realized.