TY - GEN
T1 - High-Conversion-Ratio Push-Pull Resonant Converter for High-Power Fuel-Cell Applications
AU - Choi, Ji Ho
AU - Khan, Muhammad Mubeen
AU - Wagaye, Tsegaab Alemayehu
AU - Park, Eun Ha
AU - Kim, Su Hyeong
AU - Kim, Minsung
N1 - Publisher Copyright:
© 2023 The Korean Institute of Power Electronics.
PY - 2023
Y1 - 2023
N2 - We propose a high-conversion-ratio push-pull resonant dc/dc converter for high-power fuel-cell applications. The conventional converter suffers from a high current spike at the secondary-side switches when the load exceeds the threshold. The proposed converter incorporates a resonant neutral-point-clamped (NPC) cell on the secondary side, and therefore does not have the high current spike, but maintains the advantages of the conventional converter such as high step-up function, soft switching capability. When the load is over the threshold, the switches of the NPC cell are turned off with complete zero-voltage-switching (ZVS) and its diodes are turned off with zero-current-switching (ZCS). The theoretical analysis of the proposed converter is presented, then validated using a 1.2 kW laboratory-built prototype.
AB - We propose a high-conversion-ratio push-pull resonant dc/dc converter for high-power fuel-cell applications. The conventional converter suffers from a high current spike at the secondary-side switches when the load exceeds the threshold. The proposed converter incorporates a resonant neutral-point-clamped (NPC) cell on the secondary side, and therefore does not have the high current spike, but maintains the advantages of the conventional converter such as high step-up function, soft switching capability. When the load is over the threshold, the switches of the NPC cell are turned off with complete zero-voltage-switching (ZVS) and its diodes are turned off with zero-current-switching (ZCS). The theoretical analysis of the proposed converter is presented, then validated using a 1.2 kW laboratory-built prototype.
KW - input current ripple
KW - Push-pull transformer
KW - rated power
KW - soft switching
UR - http://www.scopus.com/inward/record.url?scp=85170642479&partnerID=8YFLogxK
U2 - 10.23919/ICPE2023-ECCEAsia54778.2023.10213609
DO - 10.23919/ICPE2023-ECCEAsia54778.2023.10213609
M3 - Conference contribution
AN - SCOPUS:85170642479
T3 - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
SP - 86
EP - 92
BT - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Y2 - 22 May 2023 through 25 May 2023
ER -