Analysis of amorphous power in different photovoltaic system technologies
D. Kuhar(1), J. Počivalnik(1), E. Simonič(1), K. Sredenšek(1,2), S. Seme(1,2)   1. Faculty of Energy Technology, University of Maribor. Hočevarjev trg 1, 8270 Krško, Slovenia 2. Faculty of Electrical Engineering and Computer Science, University of Maribor. Koroška cesta 46, 2000 Maribor, Slovenia 2025-07-25

Abstract

This paper aims to analyse the amorphous power output of three different photovoltaic systems – fixed photovoltaic system, photovoltaic/thermal system and tracking photovoltaic system which are all located at the Institute of Energy Technology, Faculty of Energy Technology, University of Maribor. Over the course of a year, the production analysis is conducted at annual, monthly, and quarterly levels to determine which system achieves the highest electricity production across different time intervals. The analysis is based on 5-minute measurement data for each photovoltaic system, allowing for a detailed and comprehensive evaluation of production performance. In addition to the amorphous power output of individual photovoltaic systems, the paper investigates the availability factor, which represents the available power of each photovoltaic system as a function of the share of its nominal installed capacity. Based on the analyses of the electricity production, it is possible to determine which photovoltaic system achieves the highest energy yield by optimally utilizing the available solar energy under variable weather conditions throughout the year.

Key words: amorphous power, electrical energy, fixed photovoltaic system, tracking photovoltaic system, hybrid solar system

References

[1] P. Choudhary and R. Kumar Srivastava, “Sustainability perspectives – a review for solar photovoltaic trends and growth opportunities” Journal of Cleaner Production, vol. 227, pp. 589-612, 2019.  

[2] L. Sinan, T. Ma and D. Wang, “Photovoltaic pavement and solar road: A review and perspectives”, Sustainable Energy Technologies and Assessments, vol. 55, 2023.

[3] N. Amber Dunne, P. Liu, A. F. A. Elbarghthi, Y. Yang, V. Dvorak and C. Wen, “Performance evaluation of solar photovoltaic-thermal (PV/T) air collector system”, Energy Conversion and Management: X, vol. 20, 2023.

[4] J. Choi, D. Kim, K. Park, J. Choi and D. Chung, “Tracking system and MPPT control for Efficiency Improvement of Photovoltaic”, 2008 International Conference on Control, Automation and Systems, pp. 1341-1344, 2008.

[5] ELES, “Report and simplification proposal”, 2024. Available:

https://www.eles.si/Portals/0/xBlog/uploads/2025/1/8/Analiza%C4%8DasovnihblokovELES.pdf

[6] S. Joshi, S. Aswinkumar and S. Dhoble "Photovoltaic -Thermal systems (PVT): Technology review and future trends”, Renewable and Sustainable Energy Reviews, vol. 92, pp. 848-882, 2018.  

[7] K. Sredenšek, S. Seme, B. Štumberger, M. Hadžiselimović, A. Chowdhury and Z. Praunseis, “Expirimental Validation of Dynamic Photovoltaic/Thermal Collector Model in Combination with Thermal Energy Storage Tank”, Energies, 2021.

[8] C. Alexandru and C. Pozna, “Different tracking strategies for optimizing the energetic efficiency of a photovoltaic system”, 2008 IEEE International Conference on Automation, Quality and Testing, Robotics, pp. 443-439, 2008.

[9] M. Elibrahimi, A. Elmouatamid, M. Bakhouya, K. Feddi and R. Ouladsine, “Performance Evaluation of Fixed and Sun Tracking Photovoltaic Systems”, 2018 6th International Renewable and Sustainable Energy Conference (IRSEC), pp. 1-6, 2018.