A High-Efficiency Isolated PFC AC-DC Topology with Reduced Number of Semiconductor Devices

OBAID ALDOSARI; LUCIANO GARCIA RODRÍGUEZ; GERMÁN G. OGGIER; JUAN C. BALDA

IEEE Journal of Emerging and Selected Topics in Power Electronics

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Año: 2022 vol. 10 p. 3631 - 3642

2168-6785

A new three-level isolated ac-dc power factor correction (PFC) topology with a minimum number of semiconductor devices is the focus of this paper. This topology provides a high input power factor (PF), soft-switching, and higher efficiency than existing isolated ac-dc converters. Furthermore, the proposed circuit has lower voltage rating requirements for the secondary side devices, which leads to a lower total cost and minimizes total converter losses. This article presents a theoretical analysisdescribing the complete characterization of this new topology, and experimental results on a 1-kW prototype showing high PF and efficiency throughout the operating range.