A cassegrain concentrator photovoltaic system: Comparison between dichroic and multijunction photovoltaic configurations

In the present paper a novel configuration of high concentrator photovoltaic (HCPV) systems based on Cassegrain optics has been presented. The proposed system has been designed in order to be suitable for the implementation of both multi-junction and spectrum splitting configurations. The Cassegrain optic design, the components and material choices for the development of HCPV receivers have been described. Subsequently, the proposed HCPV system has been implemented considering a multi-junction and dichroic photovoltaic solar cells configurations. Finally, the outdoor characterization of the two receiver prototypes has been carried out in order to determine their energy conversion performances. The obtained outcomes are then compared and discussed in order to highlight the worth, and the effectiveness of the proposed HCPV configurations.