Abstract
The surface temperature of PV panel has an adverse impact on its performance. The several electrical parameters of PV panel, such as open circuit voltage, short circuit current, power output and fill factor depends on the surface temperature of PV panel. In the present study, an experimental work was carried out to investigate the influence of PV panel surface temperature on its electrical parameters. The results obtained from this experimental study show a significant reduction in the performance of PV panel with an increase in panel surface temperature. A 5W PV panel experienced a 0.4% decrease in open circuit voltage for every 1°C increase in panel surface temperature. Similarly, there was 0.6% and 0.32% decrease in maximum power output and in fill factor, respectively, for every 1°C increase in panel surface temperature. On the other hand, the short circuit current increases with the increase in surface temperature at the rate of 0.09%/°C.
Highlights
The use of energy plays a very vital role in one’s life
Based on the recorded electrical parameters the current (I)-voltage (V) and power (P)-voltage (V) characteristics of PV panel are plotted at four different surface temperatures (i.e., 35oC, 45oC, 55oC and 65oC), which are shown in Figure 3 and Figure 4
The maximum power point tracker algorithm would not be able to operate at a particular maximum power point, which reduces the performance of solar charge controller
Summary
The use of energy plays a very vital role in one’s life. it’s supply and generation should be secure and sustainable. This movement of electron is the main cause of generation of an electric current in the PV device [6,7,8]. The performance of PV panel is highly depended on the environmental parameters, such as solar radiation, wind speed, humidity, dust and atmospheric temperature. The panel surface temperature is a key environmental parameters that influence the performance of PV panel by changing its electrical parameters, such as open circuit voltage (VOC), short circuit current (ISC), maximum power output (PM) and fill factor (FF) [9,10]. The decrease in power output and fill factor of the PV panel to increase in panel surface temperature are at the rate of -0.65%/K and -0.2%/K, respectively [14]. In this paper, an attempt was made to understand the influence of surface temperature on PV panel performance
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