The Largest Double-Axis Sun Tracking PV Systems with Electronic Control and Photosensors in Turkey
| Autor: | Eke, R., Ozden, S., Senturk, A., Fleck, O., Oktik, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| DOI: | 10.4229/25theupvsec2010-4bv.1.104 |
| Popis: | 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4744-4747 In the present study, the largest double axis sun tracking PV systems in Turkey with one electronic control and one photo sensors are described. The systems are installed at Mugla University campus. Totally 168 Sunset AS HPC100 back contact single crystalline silicon modules and 84 of them are used in each tracking system. And 21 modules are connected series to obtain 453.6V at open circuit and two series string is plugged one single phase grid connected inverter. Eacch PV system on trackers has 4 strings and 2 inverters. Measured data of the PV systems are compared with each other and also measured data is compared with the calculated data. The performance measurements of the PV systems were carried out first when the PV systems were in a fixed position and then the PV systems were controlled while tracking the sun in two axis (on azimuth and solar altitude angles) and the necessary measurements were performed. It was observed that the sun tracking system with electronic control always track the sun but the sun tracking system with photo sensors has some unstable states under overcast and partly cloudy weather conditions when the photo sensors do not see the sun. Annual PV electricity yield is calculated to be about 11,94MWh with 0.772 performance ratio (PR) and 1512kWh/kWp energy rating for 28°C fixed tilt angle for each system. It is calculated that 33.8% more PV electricity will be obtained in the double-axis sun-tracking system when compared to the fixed system. The annual PV electricity fed to grid will be about 15.98MWh with 0.787 PR and 2023 kWh/kWp for each system. |
| Databáze: | OpenAIRE |
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