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

Abstract

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 (Voc, Isc, Vmax, Imax, Pmax 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 Pmax present the highest possible loss, ranging from 2.08% to 5.2%. Additionally, the results show that the short-circuit current Isc comes second with yearly degradation rates spanning from 2.75% to 2.84%. Finally the open-circuit voltage Voc is the least affected, with yearly degradation occurring from 0.01% to 4.25%.

Yerel Meteoroloji̇k Veri̇ Kayitlari İle Sekbandemi̇rli̇ Kirsal Bölgesi̇nde Günlük Ve Mevsi̇msel Fotovoltai̇k Isi Adasinin İncelenmesi̇ Ve Değerlendi̇ri̇lmesi̇

“…Arrays and Surrounding Air (Demirezen et al, 2022) In addition to the PVHIE researches above, some studies on thermal modeling (Lobera and Valkealahti, 2013;Siddiqui and Arif, 2013;Tuncel et al, 2018), degradation and reliability (Saadsaoud et al, 2017;Ozden and Akinoglu, 2018), and shading effect (Kiris et al, 2016) analyze PV module temperature and efficiency/performance according to weather/climatic and environmental conditions.…”