Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination
Joint Authors
Sharma, Pratibha
Walker, Alex W.
Wheeldon, Jeffrey F.
Hinzer, Karin
Schriemer, Henry
Source
International Journal of Photoenergy
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-07
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The design of a triple junction solar cell’s front contact grid can significantly affect cell conversion efficiency under high concentration.
We consider one aspect of grid design, choosing a linear grid within a distributed resistance cell model to optimize finger spacings at concentrations between 500 and 2500 suns under uniform and nonuniform illumination.
Optimization for maximum efficiency under Gaussian irradiance profiles is done by SPICE analysis.
Relative to the optimized uniform illumination designs, we find enhancements of 0.5% to 2% in absolute efficiencies for uniform spacing.
Efficiency enhancement with nonuniform spacing under nonuniform illumination is also evaluated.
Our model suggests that, at lower concentrations (<1000 suns), the penalty for using uniformly spaced fingers instead of nonuniformly spaced fingers is <0.1%.
However, at a concentration of 2500 suns the penalty increases to 0.3%.
Thus, relative to a uniform irradiance optimization, an absolute efficiency increase of 2.3% can be attained for an optimized nonuniform spacing given the Gaussian irradiance profile under consideration.
American Psychological Association (APA)
Sharma, Pratibha& Walker, Alex W.& Wheeldon, Jeffrey F.& Hinzer, Karin& Schriemer, Henry. 2014. Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination. International Journal of Photoenergy،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1037195
Modern Language Association (MLA)
Sharma, Pratibha…[et al.]. Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination. International Journal of Photoenergy No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1037195
American Medical Association (AMA)
Sharma, Pratibha& Walker, Alex W.& Wheeldon, Jeffrey F.& Hinzer, Karin& Schriemer, Henry. Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination. International Journal of Photoenergy. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1037195
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1037195