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High Step-Up Ripple-Free Resonant DC/DC Converter Without Auxiliary Inductor
- Authors
- Wagaye, Tsegaab Alemayehu; Raheem, Hamid; Bai, Changkyu; Moon, Dongok; Jung, An-Yeol; Kim, Minsung
- Issue Date
- Aug-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- instantaneous reactive current; low cost; Push-pull transformer; reduced voltage stress; zero input-current ripple
- Citation
- ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics, pp 1329 - 1335
- 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
- 1329
- End Page
- 1335
- Abstract
- In this paper, we present high step-up ripple-free resonant dc/dc converter that does not use auxiliary inductors. By using the push-pull transformer with the primary-side switching modulation fixed at 0.5, the proposed converter accomplishes theoretically zero input-current ripple. By removing the input auxiliary inductors, the proposed converter achieves high power density. In addition, this converter can achieve zero-voltage switching of the primary-side switches and zero-current switching of output diodes under a wide input voltage range. A 1-kW experimental prototype was implemented and it was tested to validate the superior properties of the proposed converter. © 2023 The Korean Institute of Power Electronics.
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