Computer vision algorithm for relative misalignments estimation in CPV modules

A key aspect in the performance of a concentrator photovoltaic (CPV) module is a proper alignment between the optics and the photovoltaic solar cell. This work proposes a novel method for measuring misalignments in CPV at different levels, considering misalignments between units at module level or misalignments between modules at tracker level. The method is based on images acquisition (using a CCD camera) and its processing. To validate the method, a CPV module has been measured and results have been compared with a proven method given by the Module Optical Analyzer (MOA).