Anti-Reflecting Coating to Improve the Performance of Polycrystalline Photovoltaic Module

Abstract

Photovoltaic performance module (PV) is affected by surface temperature panel, which can reduce output efficiency represented by output power and internal parasitic resistance. Series resistance (Rs) and shunt resistance (Rsh) are needed to determine the characteristics and performance of PV modules for long-term operations. In this work, an anti-reflecting coating (AR layer) has been used to improve the efficiency of solar cells and to determine the stability of the parasitic resistance Rs and Rsh. A 10Watt Visero Polycrystalline PV module coated with AR layer is irradiated using direct sunlight, and using an artificial light of 500W halogen lamp at various temperature ranges from 30 °C to 60 °C. Rs and Rsh are determined based on the current-voltage curve using three parameters; short circuit current, open-circuit voltage, and the maximum power point generated for the Lambert-W calculation. Results show an increase of 11% output power using AR coated module, while the internal resistance Rs increases for 13% and Rsh decreases by 0.54%. For non-coated PV, Rs increased significantly for 165% and Rsh decreased by 7.4%. Furthermore, the temperature also affects the open-circuit voltage for 8.6% lower and increase the output power for 6.7%. The results show the series Rs and shunt resistance Rsh values depend on the PV module temperature.