Experimentally Fault detection scheme on shading and cracks in PV modules

In recent years, photovoltaic technology (PV) has become increasingly decisive among other renewable energies, because it is clean energy. However, PV module performance is affected by factors such as cracks and shading. Shading is the main cause of degradation of PV module performance. It is important that these abnormalities are early detected in order to increase the performance of PV module. Hence, in this paper a fault detection scheme based on frequency response is proposed.