Analysis on outdoor test of PV module's I-V characters

Outdoor test approach of PV modules is different from the one in laboratory and necessary for the performance evaluating of PV modules in outdoor working environment. There are mainly three kind outdoor test approaches of PV modules, offline test approach, online test approach and mobile laboratory approach. The principle and application of the three test approaches are analyzed, and the test accuracy comparison are carried out through test results on same one PV module.