Realization of Concentrated Photovoltaic Module Based on Horizontally Staggered Light Guide
Abstract
Concentrated photovoltaic (CPV) systems have proven to be an important
alternative to conventional crystalline silicon and thin film photovoltaic (PV)
energy conversion systems. In CPV systems, lenses or mirrors are used to
collect sunlight from a large area and to focus it onto a small area of a high
efficiency photovoltaic cell. In this paper, we report the realization of a new
CPV concentrator that is based on a horizontally staggered light guide system
with a medium concentration level. The optical components were manufactured using
a low-cost method, with PMMA as the optical material. Laser-grooved
buried-contact silicon solar cells were used and these cells are specially
designed and fabricated for this application to minimize the optical and
electrical losses. A complete mini-module with a 15 cm x 15 cm area was
assembled and tested under outdoor conditions. The test results are in good
agreement with the expectations and the main problems causing losses are
identified to further improve the system. It is shown that an optical efficiency
of higher than 80%, leading to a module power that exceeds 170 W/m2,
is attainable with existing Si solar cell technology with cost effective
manufacturing methods.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Publication Date
June 29, 2018
Submission Date
May 17, 2018
Acceptance Date
May 29, 2018
Published in Issue
Year 2018 Volume: 39 Number: 2