TY - GEN
T1 - A Novel Structure of Fully Soft-switched DC-DC Converter with Frequency Doubling Feature for High-Density Power Conversion
AU - Dey, Saikat
AU - Chandwani, Ashwin
AU - Mallik, Ayan
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - This paper presents a novel structure of a dual full bridge LLC resonant converter topology with a frequency doubling feature utilizing a novel modulation strategy for high step-down power conversion in data center application. The operational modes of the converter with the proposed PWM commutation strategy are analyzed in detail. A comparative study with the traditional 50% duty commutation scheme in PWM-controlled full-bridges shows the benefits of using the proposed 75% duty commutation at the second bridge switches. The criteria for soft switching at all the primary side devices at different loading conditions are also thoroughly investigated. For concept verification of the converter, a 400V to 1V DC, 500W conversion with the proposed topology is carried out in LTSpice simulation environment. The simulation results confirm the advantages of the converter: a) reduced magnetics size due to frequency doubling feature; b) zero-voltage switching (ZVS) with reduced switching frequency (f_{mathbf{sw}}) at all the primary side devices.
AB - This paper presents a novel structure of a dual full bridge LLC resonant converter topology with a frequency doubling feature utilizing a novel modulation strategy for high step-down power conversion in data center application. The operational modes of the converter with the proposed PWM commutation strategy are analyzed in detail. A comparative study with the traditional 50% duty commutation scheme in PWM-controlled full-bridges shows the benefits of using the proposed 75% duty commutation at the second bridge switches. The criteria for soft switching at all the primary side devices at different loading conditions are also thoroughly investigated. For concept verification of the converter, a 400V to 1V DC, 500W conversion with the proposed topology is carried out in LTSpice simulation environment. The simulation results confirm the advantages of the converter: a) reduced magnetics size due to frequency doubling feature; b) zero-voltage switching (ZVS) with reduced switching frequency (f_{mathbf{sw}}) at all the primary side devices.
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U2 - 10.1109/ECCE47101.2021.9595941
DO - 10.1109/ECCE47101.2021.9595941
M3 - Conference contribution
AN - SCOPUS:85123355996
T3 - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
SP - 2112
EP - 2117
BT - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Y2 - 10 October 2021 through 14 October 2021
ER -