Análise experimental de microgeração eólica com conversão CC-CA e diferentes condições de carga

Abstract

This paper presents an experimental analysis of the performance of a wind microgeneration system on a teaching bench, operating under different load and energy conversion conditions. Tests were carried out in direct current (DC) with resistive loads and in alternating current (AC), using DC-AC conversion to power a three-phase motor with star and delta starts. The system used consists of a wind turbine, battery bank, converters, and control modules, allowing direct measurements through the Human-Machine Interface (HMI). The variables monitored include voltage, current, power, and rotation, enabling performance comparisons between different configurations. The results indicated that, in direct current (DC) mode with resistive loads, load and speed variation significantly impacts the power delivered and operational stability. In DC-AC conversion, the delta configuration showed higher power in direct current (DC) consumption, while the star start offered more stable operation and lower electrical demand. The tests performed contribute to the understanding of the behavior of microgeneration wind systems, helping to optimize designs for off-grid applications.