Abstract

The performance of different reflexive and refractive secondaries optimized for the same primary lens is studied by using ray-tracing simulation. Different solutions are approached according to materials and manufacturing processes currently available in the market, which can be potentially cost-effective for concentrator photovoltaic (CPV) modules. They are compared in terms of system optical efficiency and acceptance angle. In addition, irradiance distribution over the cell is also studied.

© 2009 Optical Society of America

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References

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  1. G. Peharz, J. Jaus, P. Nitz, T. Schmidt, T. Schult, and A. W. Bett, "Development of refractive secondary optics for FLATCON modules," Proceeding 23rd EPVSEC (2008).
  2. R. King, "Raising the efficiency ceiling with multijunction III-V concentrator photovoltaics," Proceeding 23rd EPVSEC (2008).
  3. I. Garca, C. Algora, I. Rey-Stolle, and B. Galiana, "Study of non-uniform light profiles on high concentration III-V solar cells using quasi-3D distributed models," Proceeding 33rd IEEE Photovoltaic Specialist Conference (2008).
  4. E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
    [CrossRef]
  5. A. Bett and H. Lerchenmller, The FLATCON System from Concentrix Solar, Concentrator Photovoltaics (Springer Series in Optical Science, 2007).
  6. V. Garboushian, K. Stone, and A. Slade, The AMONIX High Concentration Photovoltaics System, Concentrator Photovoltaics (Springer Series in Optical Science, 2007).
  7. K. Araki, "Develompent of a new 550X concentrator module with 3J-cells -performe and reliability," Proceeding 31rd IEEE Photovoltaic Specialist Conference (2005).
  8. C. Algora, The importance of the Very High Concentration in the Third-Generation Solar Cells, chapter 6 Next Generation Photovoltaics (2004).
  9. R. Winston, J. Miano, and P. Bentez, Nonimaging Optics (2005).
  10. C. Chiang and M. Quintana, "Sandia’s CONCEPT-90 photovoltaic concentrator module," Proceeding 21st IEEE Photovoltaic Specialist Conference (1990).
  11. P. A. Davies, "Design of single-surface spherical lenses as secondary concentrators for photovoltaic cells," Pure Appl. Opt. 2, 315-324 (1993).
    [CrossRef]

2006 (1)

E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
[CrossRef]

1993 (1)

P. A. Davies, "Design of single-surface spherical lenses as secondary concentrators for photovoltaic cells," Pure Appl. Opt. 2, 315-324 (1993).
[CrossRef]

Davies, P. A.

P. A. Davies, "Design of single-surface spherical lenses as secondary concentrators for photovoltaic cells," Pure Appl. Opt. 2, 315-324 (1993).
[CrossRef]

Feuermann, D.

E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
[CrossRef]

Gordon, J. M.

E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
[CrossRef]

Katz, E. A.

E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
[CrossRef]

Prog. Photovoltaics (1)

E. A. Katz, J. M. Gordon, and D. Feuermann, "Effects of ultra-high flux and intensity distribution in multi-junction solar cells," Prog. Photovoltaics 14, 297-303 (2006).
[CrossRef]

Pure Appl. Opt. (1)

P. A. Davies, "Design of single-surface spherical lenses as secondary concentrators for photovoltaic cells," Pure Appl. Opt. 2, 315-324 (1993).
[CrossRef]

Other (9)

G. Peharz, J. Jaus, P. Nitz, T. Schmidt, T. Schult, and A. W. Bett, "Development of refractive secondary optics for FLATCON modules," Proceeding 23rd EPVSEC (2008).

R. King, "Raising the efficiency ceiling with multijunction III-V concentrator photovoltaics," Proceeding 23rd EPVSEC (2008).

I. Garca, C. Algora, I. Rey-Stolle, and B. Galiana, "Study of non-uniform light profiles on high concentration III-V solar cells using quasi-3D distributed models," Proceeding 33rd IEEE Photovoltaic Specialist Conference (2008).

A. Bett and H. Lerchenmller, The FLATCON System from Concentrix Solar, Concentrator Photovoltaics (Springer Series in Optical Science, 2007).

V. Garboushian, K. Stone, and A. Slade, The AMONIX High Concentration Photovoltaics System, Concentrator Photovoltaics (Springer Series in Optical Science, 2007).

K. Araki, "Develompent of a new 550X concentrator module with 3J-cells -performe and reliability," Proceeding 31rd IEEE Photovoltaic Specialist Conference (2005).

C. Algora, The importance of the Very High Concentration in the Third-Generation Solar Cells, chapter 6 Next Generation Photovoltaics (2004).

R. Winston, J. Miano, and P. Bentez, Nonimaging Optics (2005).

C. Chiang and M. Quintana, "Sandia’s CONCEPT-90 photovoltaic concentrator module," Proceeding 21st IEEE Photovoltaic Specialist Conference (1990).

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Figures (4)

Fig. 1.
Fig. 1.

Profiles for the different secondaries under study: truncated reflexive cone (green) and pyramid (red), CPC (yellow), dome A (blue), dome B (orange). Dimensions in millimeters.

Fig. 2.
Fig. 2.

Angular transmission curves for the different secondaries studied. Circular marks over the lines indicates the deviation angle where optical efficiency becomes 90% and 80% of the maximum.

Fig. 3.
Fig. 3.

Irradiance distribution over the cell and encircled energy for the different secondaries studied at deviation angle θ = 0.

Fig. 4.
Fig. 4.

Irradiance distribution at CPC exit considering (a) perfect specular optical surfaces and (b) optical surfaces where gaussian scattering takes place with σ = 0.2.

Tables (1)

Tables Icon

Table 1. Optical efficiency comparison for different secondaries. θ 90% and θ 80% are deviation angles for an optical efficiency of 90% and 80% of the maximum. The first one (θ 90%) is usually known as acceptance angle.

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