Initial Performance Degradation of an A-Si/a-Si Tandem PV Array. Phinikarides, A., Makrides, G., & Georghiou, G. E In 27th EU-PVSEC, pages 3267–3270, Frankfurt, Germany, 2012.
doi  abstract   bibtex   
The initial performance degradation of an a-Si/a-Si tandem PV array has been analysed using temperature corrected dc maximum power point (mpp) measurements from a 1 kWp system, Pmpp,dc, and periodic ratings at STC, Pmpp,STC, of a separate, field exposed module. The measurements from the PV system showed a 16.9\%\ percentage reduction of the Pmpp,dc from the initial unstabilized Pmpp,dc in the first 3 months of operation. In the next 4 months, a further 8.6\%\ reduction was observed. The indoor measurements at STC showed comparable results; 13.66\%\ reduction of the Pmpp,STC in the first 3 months and 6.95\%\ in the next 4 months. It is evident then, that there was rapid degradation during the first 3 months of operation of the PV system, which was reduced in the subsequent months.
@inproceedings{phinikaridesInitialPerformanceDegradation2012,
  title = {Initial Performance Degradation of an A-{{Si}}/a-{{Si}} Tandem {{PV}} Array},
  booktitle = {27th {{EU-PVSEC}}},
  author = {Phinikarides, Alexander and Makrides, George and Georghiou, George E},
  year = {2012},
  pages = {3267--3270},
  address = {{Frankfurt, Germany}},
  doi = {10.4229/27thEUPVSEC2012-4BV.2.16},
  abstract = {The initial performance degradation of an a-Si/a-Si tandem PV array has been analysed using temperature corrected dc maximum power point (mpp) measurements from a 1 kWp system, Pmpp,dc, and periodic ratings at STC, Pmpp,STC, of a separate, field exposed module. The measurements from the PV system showed a 16.9\{\%\} percentage reduction of the Pmpp,dc from the initial unstabilized Pmpp,dc in the first 3 months of operation. In the next 4 months, a further 8.6\{\%\} reduction was observed. The indoor measurements at STC showed comparable results; 13.66\{\%\} reduction of the Pmpp,STC in the first 3 months and 6.95\{\%\} in the next 4 months. It is evident then, that there was rapid degradation during the first 3 months of operation of the PV system, which was reduced in the subsequent months.},
  copyright = {All rights reserved},
  keywords = {a-si,degradation,pv array,pv module,stc,tandem},
  file = {/home/alexis/Zotero/storage/5WJF9IG4/Phinikarides et al. - 2012 - Initial performance degradation of an a-Sia-Si ta.pdf}
}

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