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Single-Phase and Three-Phase Input

D01.9 - Three-Phase Hybrid Rectifier with Symmetric DC-Bus for More Electric Aircrafts

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
This work presents a proposal of a three-phase hybrid rectifier with symmetric DC-bus (TPHSR) for replacing Autotransformer Rectifier Unit (ATRU) in DC power distribution system in More Electric Aircrafts (MEAs). The circuit topology derives from a simple diode bridge rectifier and a Four-Wire-Based Boost PFC converter associated with two Half-bridges resonant LLC converters (Boost PFC+LLC). The benefits of the proposed hybrid architecture are reduced system weight and higher efficiency, since the Boost PFC+LLC processes at most 15% of the rated power. This paper provides details on new practical rectifier unit for MEA applications that convert three-phase 230Vac into symmetric ± 270 V dc (540 V dc). A design example of 30 kW was evaluated on the hardware-in-the-loop platform. The results obtained demonstrate the potential of the proposed solution for MEA application.