Title:	Optical Design and Optics Manufacturing of a Highly Integrated Micro-CPV for Space Applications
Author(s):	A. Bermudez-Garcia, P. Voarino, O. Raccurt
Keywords:	Space, Devices, Concentrators
Topic:	PV Systems Engineering, Integrated/Applied PV
Subtopic:	PV for Space Applications
Event:	8th World Conference on Photovoltaic Energy Conversion
Session:	4DO.16.3
Pages:	1142 - 1147
ISBN:	3-936338-86-8
Paper DOI:	10.4229/WCPEC-82022-4DO.16.3
Price:	0,00 EUR
Document(s):	paper

Abstract/Summary:

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This work presents the first optical developments of a novel concept of micro-Concentrators PhotoVoltaic (CPV), based on a highly integrated miniaturized mirror. This approach is performed with the objective of significantly reducing the recurring cost of the standard PhotoVoltaic Assembly (PVA) made with classical Coverglass Interconnected Cells (CIC) for space applications. Optics have been optimized for < 1 mm² micro solar cells. Free forms optics, primary and secondary elements have been studied and an acceptance angle along the y-axis of 8.2° has been obtained. A parabolic shape has then been chosen for proof-of-concept testing. The concentration ratio is 26X and the first estimate of optical efficiency is of 82 % without any antireflective optimization. For the experimental part, honeycomb structural assemblies, optical molds and optics have been realized. The fabrication process is described, and the first characterizations are achieved.