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Conjugate refractive–reflective based building integrated photovoltaic system

Baig, Hasan; Chemisana, Daniel; Sundaram, Senthilarasu; Mallick, Tapas


Hasan Baig

Daniel Chemisana

Tapas Mallick


Building Integrated Concentrating Photovoltaic (BICPV) systems make use of optical elements to concentrate the incoming solar radiation on small-sized solar cells with the aim of integrating PV technology into the building. We present a novel conjugate system designed to utilize the merits of both reflective and refractive optics. The optical geometry under study is a dielectric based three-dimensional cross compound parabolic concentrator (3DCCPC) enveloped by a reflective geometry of similar shape whilst maintaining an air gap between them. Monte Carlo ray-trace simulations are used to model and optimize the system configuration. The theoretical analysis shows that the optical performance of the system can be improved by 11% whilst maintaining an air gap of 0.1 mm between the reflective and the refractive surfaces. Experiments are carried out by making a prototype of the proposed system to evaluate the proof of concept. A maximum power ratio of 2.76 was found under standard testing conditions at an incidence angle of 10°. Results show that the average power output from the proposed system increases by 5.46% compared to its predecessor.

Journal Article Type Article
Acceptance Date May 27, 2018
Online Publication Date May 29, 2018
Publication Date Oct 1, 2018
Deposit Date Mar 13, 2023
Print ISSN 0167-577X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 228
Pages 25-28
Keywords Non-imaging optics, Solar, Concentrator, Light trapping, Conjugate optics