Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes18-24460 
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Creative Commons License

Volume 18 article 694 pages: 313 - 320

Pavel Nikolaevich Kuznetsov
Sevastopol State University, Nuclear Energy and Industry Institute, Sevastopol, Russian Federation

Layth Mohammed Abd Ali*
University of Kufa, Presidency University of Kufa, Najaf, Iraq

Vladimir Vladislavovich Kuvshinov
Sevastopol State University, Nuclear Energy and Industry Institute, Sevastopol, Russian Federation

Hayder Abdulsahib Issa
University of Thi-Qar, College of Arts, department of Arabic language, Thi-Qar, Iraq

Hayder Jasim Mohammed
University of Misan, College of Engineering, Mechanical Department, Misan, Iraq

Ali Ghanim Al-bairmani
Sevastopol State University, Nuclear Energy and Industry Institute, Sevastopol, Russian Federation

The article deals with research in solar power plants and Renewable Energy Laboratory. The purpose of research was to study the infl uencing of partial shading on the energy effi ciency of photovoltaic installations in various connection options. As the title implies the article describes a study of the possibilities of increasing their energy effi ciency when operating under different conditions. It is spoken in detail about replacement of "block connection" panels to the "in-line connection", in case of partial shading by the previous string. It is shown that substitution allows to obtain a signifi cantly higher power - up to 8 times. It is examined that the horizontal arrangement of the panels instead of the vertical, under the same conditions, also allows up to 5 times the power of the partially shaded array in the case "in-line connection" and by 34% in the case of a "block connection". It is analyzed that parallel connection of partially shaded photovoltaic array with normally illuminated, requires voltage matching, for the selection of electrical energy at the point of maximum power, which makes it possible to obtain much more energy from the shaded array. It is experimentally shown that when using the "Intelligent maximum power selection device" that implements the voltage matching, it is possible to increase the array power up to 4 times with partial shading of 3 panels of 18. It should be noted that the choice of methods that allow receiving energy from shaded panels through individual matching converters does not permit signifi cantly increasing the energy production of partially shaded array. It is experimentally shown that as a result of their use the array power does not increase by more than 2.5%. The results of research can be used in the design of new installations based on photovoltaic cells and the modernization of existing ones.

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The authors would like to thank the Institute of Nuclear Energy and Industry in Sevastopol State University and the University of Kufa for their continuous fifi nancial and moral support. The research was carried out at the expense of the grant of Federal State Autonomous Educational Institution of Higher Education "Sevastopol State University".

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