A statistical analysis on the cell parameters responsible for power degradation of fielded pv modules in a hot-dry climate

Suryanarayana Vasantha Janakeeraman, Jaspreet Singh, Joseph Kuitche, Jaya Krishna Mallineni, Govindasamy Tamizhmani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

One of the major factors influencing the power degradation rate of PV modules is the environmental condition of the power plant site. In a previous investigation conducted by ASU-PRL on about 1900 modules (from six different manufactures) aged between 12 and 18 years, we reported a power degradation rate ranging between 0.6%/year and 2.5% per year for the hot-dry climatic condition of Tempe, Arizona. Statistically analyzing the performance parameters (current, voltage or fill factor) responsible for the power degradation and determining the degradation modes responsible for the degradation of those performance parameters is of great importance to the industry, especially to design appropriate accelerated tests for the new modules with similar/same construction as that of the field aged modules. The statistical analysis of the results presented in this paper was obtained using the null hypothesis technique. This analysis indicates that the major degradation modes for the modules having glass/polymer construction are encapsulant discoloration (causing Isc drop) and solder bond degradation (causing FF drop due to series resistance increase).

Original languageEnglish (US)
Title of host publication2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3234-3238
Number of pages5
ISBN (Electronic)9781479943982
DOIs
StatePublished - Oct 15 2014
Event40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States
Duration: Jun 8 2014Jun 13 2014

Publication series

Name2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

Other

Other40th IEEE Photovoltaic Specialist Conference, PVSC 2014
CountryUnited States
CityDenver
Period6/8/146/13/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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    Janakeeraman, S. V., Singh, J., Kuitche, J., Mallineni, J. K., & Tamizhmani, G. (2014). A statistical analysis on the cell parameters responsible for power degradation of fielded pv modules in a hot-dry climate. In 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014 (pp. 3234-3238). [6925624] (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2014.6925624