TY - JOUR
T1 - Isolated High-Frequency Link PFC Rectifier with High Step-Down Factor and Reduced Energy Circulation
AU - Blinov, Andrei
AU - Vinnikov, Dmitri
AU - Romero-Cadaval, Enrique
AU - Martins, João
AU - Peftitsis, Dimosthenis
PY - 2021
Y1 - 2021
N2 - This paper presents an isolated single-stage AC-DC high-frequency link full-bridge cycloconverter (HFLC) with high conversion ratio. Despite certain advantages, such topologies generally suffer from transformer leakage inductance problems and lack of effective modulation methods, particularly in the AC-DC operation mode. In this study, for the input current regulation with the power factor correction (PFC) of the HFLC, a novel phase shift modulation (PSM) method is used. It allows soft-switched turn-off of the DC-side transistors and zero current switching of the AC-side matrix switches without additional circuits or topology modifications. The introduced time-varying regulation of the peak current can be easily implemented; as a result, merely minor energy circulation occurs. Moreover, two of the AC-side transistors operate with fundamental frequency. Design constraints of the concept are analyzed and discussed. For verification, a 1.2 kW 230 VAC to 48 VDC experimental prototype is used.
AB - This paper presents an isolated single-stage AC-DC high-frequency link full-bridge cycloconverter (HFLC) with high conversion ratio. Despite certain advantages, such topologies generally suffer from transformer leakage inductance problems and lack of effective modulation methods, particularly in the AC-DC operation mode. In this study, for the input current regulation with the power factor correction (PFC) of the HFLC, a novel phase shift modulation (PSM) method is used. It allows soft-switched turn-off of the DC-side transistors and zero current switching of the AC-side matrix switches without additional circuits or topology modifications. The introduced time-varying regulation of the peak current can be easily implemented; as a result, merely minor energy circulation occurs. Moreover, two of the AC-side transistors operate with fundamental frequency. Design constraints of the concept are analyzed and discussed. For verification, a 1.2 kW 230 VAC to 48 VDC experimental prototype is used.
KW - PFC rectifier
KW - AC-DC power converters Energy storage
KW - Power supplies
KW - Soft switching
KW - Zero current switching
KW - Zero voltage switching
U2 - 10.1109/JESTIE.2021.3126226
DO - 10.1109/JESTIE.2021.3126226
M3 - Article
JO - IEEE Journal of Emerging and Selected Topics in Industrial Electronics
JF - IEEE Journal of Emerging and Selected Topics in Industrial Electronics
ER -