Compressed Sensing Current Mapping Spatial Characterization of Photovoltaic Devices
| Autor: | Matt Cashmore, Thomas R. Betts, Ralph Gottschalg, George Koutsourakis, Martin Bliss, Simon R. G. Hall |
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| Rok vydání: | 2017 |
| Předmět: |
Micromirror device
Computer science business.industry Photovoltaic system 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Digital micromirror device law.invention 010309 optics Optics Compressed sensing law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electronic engineering Light beam Electrical and Electronic Engineering Current (fluid) Raster scan business Realization (systems) |
| Zdroj: | IEEE Journal of Photovoltaics. 7:486-492 |
| ISSN: | 2156-3403 2156-3381 |
| DOI: | 10.1109/jphotov.2016.2646900 |
| Popis: | A new photovoltaic (PV) device current mapping method has been developed, combining the recently introduced compressed sensing (CS) sampling theory with light beam induced current (LBIC) measurements. Instead of a raster scan, compressive sampling is applied using a digital micromirror device. The aim is to significantly reduce the time required to produce a current map, compared to conventional LBIC measurements. This is achieved by acquiring fewer measurements than a full raster scan and by utilizing the fast response of the micromirror device to modulate measurement conditions. The method has been implemented on an optical current mapping setup built at the National Physical Laboratory, U.K. Measurements with two different PV cells are presented in this paper and an analytical description for realization of an optimized CS current mapping system is provided. The experimental results illustrate the feasibility of the method and its potential to significantly reduce measurement time of current mapping of PV devices. |
| Databáze: | OpenAIRE |
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