Outdoor performance study of Poly and Mono Crystalline Photovoltaic Modules under varying environmental conditions

Abstract

This study investigates the environmental impact on poly Si and mono Si Photovoltaic module in outdoor condition from the month of May to June 2019 in Dhaka, Bangladesh. Two solar modules with the same characteristics have been used to carry out the impacts of the environmental parameter i.e. temperature, humidity and wind speed on the solar PV module. The ambient temperature and the module surface temperature around the solar PV module was recorded at the same time with the output current to assess the impacts of the temperature on the PV module performance. Also the relative humidity and wind speed for the study area data obtained by a humidity sensor and an anemometer respectively. Results show that the temperature has the greatest impact on the performance of the PV module followed by relative humidity and cloud cover. In this study, poly Si module shows higher percentage values of short circuit current with respect to mono Si module for most of the days. It indicates the poly Si module performs better than the mono Si module throughout the study in outdoor conditions. Also it is notable that Short circuit current decrease 30% to 70% due the cloud effects.