What are the elements of a PV module?
A photovoltaic module is composed of solar cells which are electrically connected in series and in parallel, thereby reaching a suitable voltage for their utilization. Transversal view of a photovoltaic module The cells ensemble is enclosed in materials and elements that provide the necessary protection against the environmental agents and the rigidity to be installed in the support structures. The elements are the following: – Encapsulate, composed of a material with good solar radiation transmission characteristics and low degradation against the action of sunlight. – External cover of temperate glass, which apart of facilitating the luminous transmission, will withstand the most adverse climatic conditions and sharp temperature changes. – Back surface, usually composed of an opaque layer that reflects the light that has crossed over the cell separations, thus causing it to incide again upon the cells. – Metallic frame, usually made from aluminum, that ensures the rigidity and the wa
