The old photovoltaic module detecting research

In this paper, we proposed a detection method for the old photovoltaic modules. The lifespan of general photovoltaic module is 20 years and PV modules installed since the 1990s is caused a failure because the PV module is a lifespan. So, way to detect such failure of PV modules is required. The proposed detection method has advantages that is easier and cheaper than the conventional method. To verify the validity of the proposed method, we carry out a computer-aided simulation.