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Jung, Jee-Hoon
Advanced Power Interface & Power Electronics Lab (APIPEL)
Research Interests
  • Power Converter, Wireless Power Transfer, Smart Power Interface, Digital Control System,
  • PHIL simulation system, Power Line Communication

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Bidirectional Current-Fed CLLC Resonant Converter Employing Asymmetric PWM

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Title
Bidirectional Current-Fed CLLC Resonant Converter Employing Asymmetric PWM
Author
Park, Hwa-PyeongKim, MinaJung, Jee-Hoon
Issue Date
2021-04
Publisher
Institute of Electrical and Electronics Engineers
Citation
IEEE TRANSACTIONS ON ENERGY CONVERSION
Abstract
A power systems of wearable application requires high power conversion efficiency and bidirectional power flows to obtain the compatibility with various power sources and loads. The conventional flyback converter has a simple structure and bidirectional power conversion capability. However, it shows poor power conversion efficiency caused by hard-switching operation, high DC offset current on the transformer, snubber losses, and large peak current. In this paper, a current-fed CLLC resonant converter is proposed to obtain the high power conversion efficiency and the bidirectional power conversion capability. The soft-switching operation, zero DC-offset current, and small peak current can induce high power conversion efficiency. The asymmetric pulse width modulation (APWM) regulates the bidirectional power flows and the output voltage. The design methodology of the proposed converter is analyzed by introducing its operational principles. The performance of the proposed converter is experimentally verified with a 20 W prototype.
URI
https://scholarworks.unist.ac.kr/handle/201301/52788
URL
https://ieeexplore.ieee.org/document/9419737
DOI
10.1109/TEC.2021.3076450
ISSN
0885-8969
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