A Harmonic-Based Triple Phase Shift Modulation Strategy for a Dual Active Bridge Converter in an All Electric Aircraft Application

A harmonic-based Triple-Phase Shift (TPS) modulation strategy for a 2.1kW, 270V Bidirectional DC-DC Dual Active Bridge (DAB) conditioning system for an All Electric Aircraft application is proposed in this paper. The DAB model has been obtained concerning the frequency domain, particularly resorting to the Fundamental Component Analysis (FCA). The TPS parameters are selected to both erase the flow-back current in the DC-link capacitor and minimize the voltage harmonic content on the load side. In this way, the reactive power minimization and the active power maximization associated with the first harmonic component are achieved. The co-simulation study of the proposed TPS shows a very good performances, also during step-load variations.