Conversor dab para aplicações vehicle-to-grid em microrredes cc

Abstract

This work focuses on the study and implementation of the DC-DC Dual Active Bridge Bidirectional Converter on Vehicle-to-Grid applications, proposing the creation of a bidirectional power flow between the battery bank of an electrical vehicle and a DC microgrid. The theoretical analysis of the DAB converter will be done for two switching methodologies, the conventional Phase Shift modulation, which controls the power flow through the offset angle between the transformer’s winding voltages, and the Phase Shift Plus One Side Modulation (PSPM), where a second degree of freedom is added by modulating the voltage pulse width of one of the ports. The necessary requirements to ensure zero-voltage soft switching will be analyzed for each switching methodology. The converter’s dynamic model will be obtained through the harmonic modelling analysis, whose result will be used to project an appropriate digital controller to stabilize the system. The project of a 6 kW DAB converter will be made based on actual data collection of existing electrical vehicles and DC microgrids. The validation of the former will be done through simulation results.