NDLI: Design and construction of a ∼7× low-concentration photovoltaic system based on compound parabolic concentrators

Content Provider	IEEE Xplore Digital Library
Author	Schuetz, M.A. Brown, S.A. Shell, K.A. Reinbolt, G.S. French, R.H. Davis, R.J.
Copyright Year	2011
Description	Author affiliation: Replex Plastics, Mt. Vernon, United States (Schuetz, M.A.; Brown, S.A.; Shell, K.A.; Reinbolt, G.S.) \|\| Case Western Reserve University, Cleveland, United States (French, R.H.) \|\| Ohio State University, Columbus, United States (Davis, R.J.)
Abstract	We report on the design, construction, and initial performance measurements of a low-concentration photovoltaic system base on compound parabolic concentrators (CPCs). The system is approximately a 7× concentration system and uses commercially available laser-groove buried contact (LGBC) monocrystalline silicon photovoltaic cells. The CPCs are fabricated using a second-surface aluminized acrylic mirror with proven weather durability. The asymmetric CPC optical design was driven by a balance between concentration factor, thermal issues, and angle of acceptance, and was thoroughly evaluated by optical ray tracing. The design was targeted for a single-axis tracking system, with extruded aluminum heat sinks doubling as structural components. We fabricated a 120-cell (10×12) prototype array and over three months of operation we have estimated an approximate total system power efficiency of 7.9%, limited mostly by the cell conversion efficiency and the CPC optical efficiency. We close with discussion of the overall performance of the prototype system and plans for the next system design.
Starting Page	003553
Ending Page	003553
File Size	542105
Page Count	1
File Format	PDF
ISBN	9781424499663
ISSN	01608371
e-ISBN	9781424499656
DOI	10.1109/PVSC.2011.6185911
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic systems Optical design Optical device fabrication Compounds Prototypes Educational institutions Arrays
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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