Estudo, projeto e implementação de um emulador eletrônico de painéis solares fotovoltaicos

Abstract

The method of generating electrical energy obtained through the incidence of sunlight on photovoltaic panels has been spreading in the last decade and is significantly supplying residential, commercial, and industrial installations. With the significant advent of these systems, power generation, transmission, and distribution companies have begun to demand appropriate and specific standards for generation and distribution. Considering that part of the energy generated is transferred to the electrical power distribution and transmission system, obtaining adequate models of photovoltaic generation systems and inverter tests is necessary. Tests on photovoltaic solar generation systems require repeatability, which often becomes unfeasible due to intermittent nature characteristics. The objective of this work is to develop a solar photovoltaic panel electronic emulation system to facilitate testing of static converters processing energy from the panels. Unlike other works, this one is focused on a control based on an ESP32WROOM microcontroller with C++ language through the Arduino IDE programming interface along with a Nextion Touchscreen for control and data analysis of the converter. The emulator consists of a buck CC-CC converter that provides voltage and current at the output to behave like a commercial PV panel. Finally, simulation and experimental results are obtained to demonstrate the operation of the emulator in terms of output voltage and current synthesis. Keywords:Microcontroller; Electronic Emulator; Buck Converter.