Experimental Study of Degradation Modes and Their Effects on Reliability of Photovoltaic Modules after 12 Years of Field Operation in the Steppe Region

Saadsaoud M., Ahmed A. H., Er Z., Rouabah Z.

ACTA PHYSICA POLONICA A, vol.132, no.3, pp.930-935, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 132 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.12693/aphyspola.132.930
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.930-935
  • Istanbul Technical University Affiliated: Yes


This paper presents an evaluation of the performance degradation of photovoltaic modules after twelve operation years in a steppe region environment in Algeria. The objective is to understand the different degradation modes of the photovoltaic modules and associated factors and their impact on the electrical properties (V-oc, I-sc, V-max, I-max, P-max and FF) using the degradation tests of IEC 61215 qualification standard and the electroluminescence test. The experimental results show that yearly degradation rates of the maximum power output P-max present the highest possible loss, ranging from 2.08% to 5.2%. Additionally, the results show that the short-circuit current I-sc comes second with yearly degradation rates spanning from 2.75% to 2.84%. Finally the open-circuit voltage V-oc is the least affected, with yearly degradation occurring from 0.01% to 4.25%.