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High-Conversion-Ratio Push-Pull Resonant Converter for High-Power Fuel-Cell Applications
- Authors
- Choi, Ji-Ho; Khan, Muhammad Mubeen; Wagaye, Tsegaab Alemayehu; Park, Eun-Ha; Kim, Su-Hyeong; Kim, Minsung
- Issue Date
- Aug-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- input current ripple; Push-pull transformer; rated power; soft switching
- Citation
- ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics, pp 86 - 92
- Pages
- 7
- Indexed
- SCOPUS
- Journal Title
- ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
- Start Page
- 86
- End Page
- 92
- Abstract
- 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. © 2023 The Korean Institute of Power Electronics.
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