TY - GEN
T1 - A statistical analysis on the cell parameters responsible for power degradation of fielded pv modules in a hot-dry climate
AU - Janakeeraman, Suryanarayana Vasantha
AU - Singh, Jaspreet
AU - Kuitche, Joseph
AU - Mallineni, Jaya Krishna
AU - Tamizhmani, Govindasamy
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/15
Y1 - 2014/10/15
N2 - 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).
AB - 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).
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U2 - 10.1109/PVSC.2014.6925624
DO - 10.1109/PVSC.2014.6925624
M3 - Conference contribution
AN - SCOPUS:84912144721
T3 - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
SP - 3234
EP - 3238
BT - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Y2 - 8 June 2014 through 13 June 2014
ER -