Modelagem e controle de conversor cc-cc buck-coost para sistema híbrido-elétrico de aeronave

Abstract

This paper presents the design, modeling, and control of a bidirectional DC–DC Buck–Boost converter for the hybrid-electric propulsion system of a fixed-wing unmanned aerial vehicle (UAV). The objective is to develop a converter that is efficient, lightweight, and highly reliable, meeting the demanding requirements of aeronautical applications. The methodology involves simulating different converter topologies in MATLAB®/Simulink® ,

using parameters from real devices, and applying frequency-domain techniques for con- troller design. The LC filter is designed according to system voltage and current ripple

specifications, while a PI controller is tuned to ensure stability and dynamic performance. Simulation results show that the three-leg converter topology offers advantages in terms of modularity, higher efficiency, and reduced ripple, making it the most promising solution for the studied application.