Solar Energy, Vol.120, 296-309, 2015
Performance study of crossed compound parabolic concentrator as secondary optics in non-imaging dish concentrator for the application of dense-array concentrator photovoltaic system
Optical and electrical analyses of non-imaging dish concentrator (NIDC) with secondary concentrator for the application in dense-array concentrator photovoltaic (CPV) system are presented. Array of crossed compound parabolic concentrator (CCPC) lenses is selected as secondary concentrator due to high acceptance angle, larger entrance aperture to provide more space for high flexibility of inter-connection among CPV cells, and square exit aperture matching well with commercial CPV cell. Electrical performance of integrated CPV cells with CCPC lenses (CPV CCPC) assembly module is analyzed for different pointing errors: 0 degrees, 0.1 degrees, 0.2 degrees, 0.3 degrees & 0.4 degrees, and the results are compared to that of dense-array CPV (DACPV) module. It was found that overall electrical performance of CPV CCPC assembly module is better than that of DACPV module despite using 77% less CPV cells than that of DACPV module. (C) 2015 Elsevier Ltd. All rights reserved.
Keywords:Crossed compound parabolic concentrator;Non-imaging dish concentrator;Concentrator photovoltaic;Ray-tracing;Secondary concentrator;Numerical simulation