Estratégia de controle de um conversor CC-CC bidirecional intercalado aplicado a um banco de baterias de um sistema de propulsão elétrico de aeronave

Abstract

With the increasing impact of greenhouse gas emissions, the use of technologies that minimize environmental degradation has become increasingly important. Regarding the transportation sector, hybrid/electric vehicles are an interesting alternative as they enable the reduction of pollutant emissions and a more efficient use of available energy sources. In addition to land vehicles, such as light electric cars and public transport for passengers and cargo, electric propulsion technologies have also been investigated for aeronautical applications. In order to stimulate the expansion of aircraft electrification, several research projects are underway with the aim of improving currently applied technologies and methodologies. In this context, this work deals with the study of an energy storage subsystem belonging to a test bench for aeronautical propulsion, with series hybrid topology, under development at the UFJF’s Hybrid-Electric Propulsion Laboratory. The project entitled “Assembling a Test Bench for Hybrid-Electric Aeronautical Propulsion” (APQ-03593-17) is a partnership between UFJF, Embraer and FAPEMIG and seeks to expand the national knowledge base about aircraft propulsion systems. Thus, this work presents the modeling and control of an interleaved bidirectional DC-DC converter responsible for the interconnection of a battery pack with the aircraft propulsion system. The modeling performed is based on state-space averaging model techniques and small- signal linearization. And the proposed control strategy is investigated by using control models in MATLAB/Simulink and the implementation of control codes embedded in Texas Instruments TMS320F28379D microcontroller. By means of the processor-in-the-loop technique, code embedded in the TMS320F28379D to control the converter is validated, where a virtual plant developed in MATLAB/Simulink is controlled through controllers calculated in the TMS320F28379D. Simulation, co-simulation and test results involving the capture of signals in the embedded codes are used to validate the proposed control strategy.