The Influence of Ambient Temperature on the Energy Characteristics of Solar Modules

摘要

The article outlines the problems of reducing the efficiency of solar modules and their degradation due to overheating of surfaces in working conditions at elevated temperatures. It is shown that the temperature coefficient of power depends on environmental conditions, the type and material of solar cells and their quality and determines the degree of degradation of solar modules. Options for improving the reliability and durability of solar modules due to the correct choice of module installation locations, the use of high-quality modules and films protecting devices from mechanical damage and pollution are given. Based on the solar cell equivalent circuit, the basic energy parameters of the solar module are calculated. It was found that the short circuit current is practically independent of the ambient temperature and the surface heating of the module. The output power of the solar module is proportional to the voltage, which largely depends on the heating temperature of each solar cell. To maintain the efficiency of the solar module near the point of maximum power, it is necessary to provide thermal protection of the surface from the influence of high temperatures. A structural calculation scheme has been drawn up taking into account external parameters that affect the operational parameters of the modules, in which thermal protection of its surface is an important element in calculating the energy characteristics of solar modules.