| Issue |
MATEC Web of Conferences
Volume 59, 2016
2016 International Conference on Frontiers of Sensors Technologies (ICFST 2016)
|
|
|---|---|---|
| Article Number | 03004 | |
| Number of page(s) | 6 | |
| Section | Energy engineering and Applications | |
| DOI | https://doi.org/10.1051/matecconf/20165903004 | |
| Published online | 24 May 2016 | |
Long – term performance evaluation of a fixed and solar follow – up systems with modified astronomical positioning in Polish conditions
1 Institute of Electrical Engineering and Electronics, Poznan University of Technology, Poznań, Poland
2 Industrial Institute of Agricultural Engineering, ul. Starolecka 31 60-963 Poznan, Poland
3 Institute of Biosystems Engineering, Poznan University of Life Sciences, Poznań, Poland
The paper presents a physical construction of a measurement stand consisting of a photovoltaic module operating in a fixed optimal configuration and in a solar tracking with a modified astronomical positioning. In order to reduce the electric energy consumption by two direct current linear motors system is positioned three times a day during winter months. Prepared energy balance, using annual measurements, confirmed the legitimacy of using two - axis Sun tracking units for central Poland. Basing on the daily and monthly electricity production and solar irradiance for both photovoltaic units a mathematical formula with proposed correction factors is presented to calculate with good accuracy monthly electric energy generation for a fixed photovoltaic installation. The results of calculations were compared with measurements showing good correlation.
© Owned by the authors, published by EDP Sciences, 2016
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