Modelling of Solder Joints in PV Modules for Reliability Prediction

In the last two decades, the photovoltaic (PV) industry has been experiencing exponential growth in the manufacture and installation of PV systems. These PV systems are now used to supply power to several critical and non-critical devices and systems in various sectors. Due to the vital role being played by these systems, it has become imperative to ensure that the systems function reliably without premature failure. The key challenge has been the untimely fatigue failure of solder interconnections of solar cells in the PV modules due to accelerated thermo-mechanical degradation. This book provides adequate information for proper design of solar cell solder joint against fatigue failure through the study of cyclic thermo-mechanical stresses and strains in the joint. This is carried-out through finite element analysis (FEA) using ANSYS software to develop the solar cell assembly geometric models followed by simulations. The approach and analysis in this book provides useful information to PV designers, engineers and manufacturers to prevent premature failure of PV modules designed to last for 25 years.