Modelo Matemático para a Estimação da Temperatura de Módulos Fotovoltaicos

Abstract

The power generated by PV arrays is directly associated with climatic conditions of the site of installation, through incident solar irradiance, ambient temperature and wind speed being the parameters that most affect their power generation. Therefore, it is evident that carrying out studies to better understand the influence of these parameters on generation is extremely important. It is known that the greater the incident solar irradiance, the greater PV module output power. High ambient temperatures causes an increase in module temperature, resulting in a decrease in power generation. The PV module temperature depends on numerous factors, which makes its estimation a very complex task. With the objective of increasing the quality and precision of this estimation, several authors have developed mathematical models that relate the cell operating temperature with the meteorological parameters. To evaluate the key characteristics that affect PV module temperature, this paper proposes a survey and comparison of the main mathematical models for estimating the operating temperature of PV arrays, found in literature. A model based on the average values of the evaluated methods is also proposed.