Applied Solar Energy

, Volume 55, Issue 4, pp 223–228 | Cite as

Studies of the PV Array Characteristics with Changing Array Surface Irradiance

  • V. V. Kuvshinov
  • L. M. Abd AliEmail author
  • E. G. Kakushina
  • B. L. Krit
  • N. V. Morozova
  • V. V. Kuvshinova


This paper presents a brief analysis of the photovoltaic (PV) modules that are currently commercially available. The most used calculation formulas and measurement procedures used for evaluating the power characteristics of photovoltaic PV modules are given. The possible causes of power losses of solar cells and modules are described, including losses caused by design features. The theoretical calculations and experimental results of measuring the characteristics of silicon PV arrays with changing surface irradiance are compared. The calculated and experimental dependences of the power output variation of the ISM-50 photovoltaic module with changing its tilt angle are presented. It is shown that there is a significant discrepancy between theoretical studies and experimental results. A hypothesis has been put forward about the dependence of a real decrease in power characteristics and refraction indices of PV array protective coatings. An adjustment factor is proposed taking into account the decrease in the solar radiation output on the silicon photocell surface when passing through the antireflective protective coatings of the PV module. The conclusions drawn from the results of this work indicate that the identified factors affecting the electricity generation by photovoltaic converters need to be considered.


silicon PV converters renewable energy sources PV module solar power plant power characteristics 



We are grateful to our colleagues from the Institute of Nuclear Energy and Industry for their continuous support.


This work was supported by the Ministry of Education and Science of the Russian Federation in the framework of agreement no. RFMEFI57717X0275 and an internal grant of Sevastopol State University.


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Copyright information

© Allerton Press, Inc. 2019

Authors and Affiliations

  • V. V. Kuvshinov
    • 1
  • L. M. Abd Ali
    • 2
    Email author
  • E. G. Kakushina
    • 1
  • B. L. Krit
    • 3
    • 5
  • N. V. Morozova
    • 4
    • 5
  • V. V. Kuvshinova
    • 1
  1. 1.Sevastopol State UniversitySevastopolRussia
  2. 2.University of KufaNajafIraq
  3. 3.Moscow Aviation Institute National Research UniversityMoscowRussia
  4. 4.Russian Medical Academy of Continuous Professional EducationMoscowRussia
  5. 5.Moscow State Technical University StankinMoscowRussia

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