The effect of four flat plate reflectors on light energy-harvesting system characteristics

Abstract

In this paper, the effect of four flat panel reflectors (bottom, top, left and right side reflectors) on the total light radiation on a small-size photovoltaic cell is analyzed. An analytical model for the determination of the optimum inclination angle of the reflectors with respect to the cell's horizontal surface is presented. The optimal angle was calculated to be 66. The calculated value was experimentally verified by measuring the short-circuit current of the cell. It was shown that the increase in the short-circuit current of the cell with reflectors in the optimal position was about 60% for the illumination levels between 10 lx and 1000 lx. The cell with reflectors was used to charge the primary capacitor in the energy harvesting circuitry of the wireless sensor node and it was demonstrated that the time needed for the cell to charge the primary capacitor could be reduced 35-40%.

Optimization of PV/T Solar Water Collector based on Fuzzy Logic Control

“…Solar energy is the most important energies that man can exploit; because it is renewable energy and is not exhaustible and does not result in gases or by-products harmful to the environment compared to other sources of energy (Ahmed, 2016;Ahmed, 2017;Mohammadnezami et al, 2015), and researchers have done a lot of research in this area and suggested many ways to develop and exploit this energy, like the reflective mirrors (Shahdost et al, 2019) to collect solar light and other ways to absorb solar energy, such solar cells that enable us to obtain electricity directly from the sun (Ahmed and Mohammed, 2017a).…”

“…The study showed that overall efficiency improves with dual mirrors. Kostic & Pavlovic, (2015) studied the effect of four mirrors installed on the top, bottom, right, and left of a solar cell on the amount of solar radiation reaching it. The researcher used an analytical model to determine the optimal slope of the reflectors relative to the horizontal surface of the cell.…”

Multiconcept Methods to Enhance Photovoltaic System Efficiency

“…The maximum power generated by the photovoltaic panels increases with the solar radiation which falls on them. This issue can be solved by using sun tracker systems [18][19][20], which reflect the solar radiation on photovoltaic panels [21,22] and solar concentrating systems [23]. All these solutions cause other problems which have to be solved in order to obtain real improvements.…”