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 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 132 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.12693/aphyspola.132.930
  • Title of Journal : ACTA PHYSICA POLONICA A
  • Page Numbers: pp.930-935


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%.