Estudo de eficiência energética: uma comparação prática entre Microinversores Apsystems, Tech Power, Hoymiles e Deye

Abstract

This capstone project presents a practical, detailed analysis of the energy efficiency of photovoltaic microinverters available on the Brazilian market, focusing on the APsystems, Tech Power, Hoymiles, and Deye brands. The study begins by establishing a theoretical framework, highlighting Brazil's solar energy potential, the fundamentals of photovoltaic systems, the operation of photovoltaic cells and modules, the differences between inverters and microinverters, and system types (on-grid and off-grid). The research evaluates key aspects of the microinverters, such as conversion efficiency, ease of installation, performance, integrated monitoring, environmental impact, and energy generation under real-world operating conditions. The comparative analysis considers indicators such as reference yield, productivity index, performance index, and performance ratio, alongside metrics including energy yield, price per kWp, and payback period. This study was made possible through the support of T8M Energia Solar—which provided the equipment used for testing—and resources offered by the Federal Institute of Minas Gerais. Ultimately, this work aims to contribute to identifying more efficient and accessible solutions within the solar energy sector, underscoring the importance of practical analysis for the advancement of photovoltaic technology in Brazil.