Concentrating photovoltaic systems and applications

A concentration reflector device of a bifacial photovoltaic module

“…The refractive concentrator is widely used at present; when there is a small aperture, it mostly adopts the common lens with higher efficiency. A large aperture mostly adopts the Fresnel lens, which is cheaper to process the material, but its reliability is poor, its life span is short, and the system power generation capacity is poor [5]. Reflective concentrators are usually made of curved glass (silver coated on the back) or curved coated aluminum plates, which have reflection coefficients up to 95% or more.…”