How to Mount PV Modules: the Effect of Different Clamping Configuration on Mechanical Stresses in PV Modules

The installation manual for photovoltaic (PV) modules frequently outlines various mounting configurations. As per IEC 61215[1], each configuration must withstand a mechanical load test with a minimum test load of 2400 Pa. However, to minimize costs and time, typically only one configuration is tested. This prompts the inquiry: Which mounting configuration is most effective in minimizing mechanical stress on PV modules? To address this question, this study utilizes finite element method (FEM) to examine various mounting configurations as well as the clamp length of a framed PV module and their impact on mechanical stresses in the front glass and solar cells.