Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.solener.2019.11.013
Title: Fast Extraction of Front Ribbon Resistance of Silicon Photovoltaic Modules Using Electroluminescence Imaging
Authors: AMIT SINGH RAJPUT 
CARLOS DAVID RODRIGUEZ GALLEGOS 
HO JIAN WEI 
NALLURI SRINATH 
SAMUEL RAJ 
ABERLE,ARMIN GERHARD 
JAI PRAKASH 
Keywords: Electroluminescence, c-Si PV modules, Front-side ribbon resistance, Voltage distribution
Issue Date: 13-Nov-2019
Publisher: SOLAR ENERGY
Citation: AMIT SINGH RAJPUT, CARLOS DAVID RODRIGUEZ GALLEGOS, HO JIAN WEI, NALLURI SRINATH, SAMUEL RAJ, ABERLE,ARMIN GERHARD, JAI PRAKASH (2019-11-13). Fast Extraction of Front Ribbon Resistance of Silicon Photovoltaic Modules Using Electroluminescence Imaging 194 (2019) : 688-695. ScholarBank@NUS Repository. https://doi.org/10.1016/j.solener.2019.11.013
Abstract: A fast and non-destructive method based on electroluminescence (EL) imaging is presented to extract the front side resistive loss for individual cells within a crystalline silicon photovoltaic module. As the local luminescence intensity of a solar cell is an exponential function of local voltage, the voltage distribution along individual ribbons within the solar cell can be extracted. The front side resistance can then be computed using the distributive nature of current flow along the ribbon. As the soldering ribbons are much more conductive than the cell busbars, and due to the contact resistance between the cell busbars and soldering ribbons, the extracted front-side resistance describes mainly the front ribbon resistance. The method requires only two EL measurements on finished modules, which makes cell-to-module resistive loss analysis simple and fast. The proposed method is then compared with the measured and predicted voltage difference along the ribbon for individual solar cells. Simulation results are also presented and compared with our proposed method.
URI: https://scholarbank.nus.edu.sg/handle/10635/173651
ISBN: 0038092X
DOI: 10.1016/j.solener.2019.11.013
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