Projeto de um emulador fotovoltaico empregando o conversor buck síncrono

Abstract

Faced with a shortage of fossil fuels and low water availability for electricity generation, alternative sources of renewable energy have become indispensable. With regard to renewable energy and distributed generation, in the current context, photovoltaic energy has been highlighted as an alternative energy source. The difficulty of reproducibility of results due to climatic variables motivated the development of systems capable of emulating photovoltaic panels by electronic means. In this way, these systems are emulated in the most authentic way possible. This work presents a study aimed at the analysis and design of a photovoltaic panel emulator using a synchronous buck converter. The work addresses concepts related to photovoltaic systems such as the structure and functioning of a photovoltaic cell, the influence of climatic factors on energy generation, discusses the standardized test conditions and addresses the characteristic curves of the modules. Then, a review of photovoltaic emulators is presented, followed by mathematical modeling of the photovoltaic modules. Subsequently, the analysis and dimensioning of the converter is presented and, soon after, the control of the photovoltaic emulator is addressed. Finally, the results and final considerations are presented.