Analysis of Power Losses and Evaluation Model for SiC MOSFET-based Triple Active Bridge Converter in Hybrid Electric Aircraft Applications

In this article, an analysis and evaluation of energy switch losses in the triple active bridge (TAB) converter for hybrid electric aircraft based on silicon carbide (SiC) is presented. The analysis evaluates various converter operation modes while considering voltage levels, switches (SiC Diode and SiC MOSFET), and transformer leakage inductance. Further, the study examines voltage conversion ratios and transformer parameters. The inductive clamp double pulse test (DPT) is used to experimentally determine the total switching energy loss of a SiC MOSFET under real working conditions. Simulation results are also presented to verify the accuracy of the theoretical analysis. The results confirm the effectiveness of SiC MOSFET modules in reducing power loss in the TAB converters.