Analysis of Selected Photovoltaic Panels Operating Parameters as a Function of Partial Shading and Intensity of Reflected Radiation

Abstract

Due to expansion of utilisation of photovoltaics in ordinary households, the question arises how this phenomenon affects the electric power of photovoltaic modules. The article deals with the electric power analysis of photovoltaic modules as a function of two very important factors. The first examined factor was partial shading, and the second factor was the intensity of reflected radiation. In order to determine the dependence of module power on the aforementioned parameters, a measurement system under laboratory conditions has been prepared. For identification of the reflected radiation effect on the power of the photovoltaic module, a series of measurements was performed on 7 different surfaces with the same radiation source. It is evident from obtained experimental result that the ratio of reflected irradiation on the solar module power is 1.29%. By simulation of partial shading of photovoltaic module, the decrease of 86.15% in its output power was identified.

Mathematical Modelling of Solar Thermal Collectors and Storages

“…This design method utilizes mathematical models and the simulation of them to reduce the costs and to speed up the test phase. This approach is useful to analyse and develop an existing solution as well (Bilčík et al, 2018). There are working software packages for solar applications that use this method, for example the TRNSYS software (Kyn and Urban, 2013;TRNSYS, 2009) or the Polysun software (Lacoste et al, 2010).…”