Tracking-integrated systems for concentrating photovoltaics

Harry Apostoleris, Marco Stefancich and Matteo Chiesa ()
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Harry Apostoleris: Laboratory for Energy and Nanoscience, Masdar Institute of Science and Technology
Marco Stefancich: Institute of Materials for Electronics and Magnetism, National Research Council
Matteo Chiesa: Laboratory for Energy and Nanoscience, Masdar Institute of Science and Technology

Nature Energy, 2016, vol. 1, issue 4, 1-8

Abstract: Abstract Concentrating photovoltaic (CPV) systems, which use optical elements to focus light onto small-area solar cells, have the potential to minimize the costs, while improving efficiency, of photovoltaic technology. However, CPV is limited by the need to track the apparent motion of the Sun. This is typically accomplished using high-precision mechanical trackers that rotate the entire module to maintain normal light incidence. These machines are large, heavy and expensive to build and maintain, deterring commercial interest and excluding CPV from the residential market. To avoid this issue, some attention has recently been devoted to the development of tracking-integrated systems, in which tracking is performed inside the CPV module itself. This creates a compact system geometry that could be less expensive and more suitable for rooftop installation than existing CPV trackers. We review the basic tracking principles and concepts exploited in these systems, describe and categorize the existing designs, and discuss the potential impact of tracking integration on CPV cost models and commercial potential.

Date: 2016
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DOI: 10.1038/nenergy.2016.18

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