An investigation of the influence of secondary optical elements on the output parameters of photovoltaic modules

Secondary optical concentrators (focons) designed to operate in a solar concentrator photovoltaic module with Fresnel lenses have been developed and investigated. Both volumetric refractive concentrators and concentrators with internal reflective surfaces in the form of inverted truncated cones and pyramids were created. The use of focons in the design of the photovoltaic module made it possible to achieve a significant increase (more than two times) in the permissible angle of deviation of the optical axis of the concentrator system from the normal position.