Análise de desempenho de controladores clássicos em conversor elevador de tensão CC-CC (Boost)

Abstract

This work presents the design, implementation, and comparative analysis of four control strategies applied to a DC-DC Boost converter: classic PID, PID with filter, Frequency Domain control, and State-Space control. The methodology encompassed the mathematical modeling of the converter operating in continuous conduction mode, computational simulation, and experimental validation on a physical prototype, subjecting the system to setpoint tracking, load disturbance rejection, and input voltage variation tests. The results demonstrated that PID-based controllers offered the best dynamic performance for reference and load variations, presenting shorter settling times and lower voltage peaks, while the State-Space technique proved superior in rejecting input voltage disturbances, evidencing greater robustness and faster recovery in this specific scenario. It is concluded that the experimental validation corroborated the simulations, although hardware non-idealities and power losses required greater control effort in the real system, confirming the necessity of selecting the appropriate control technique according to the system's predominant operational requirements.