A Novel LLC-AHB Converter to Achieve Wide Voltage Gain

Hongji Cheng*, Weimin Wu, Jiaoping Huang, Houqing Wang, Mohamed Orabi, Frede Blaabjerg

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

In this paper, a novel LLC-asymmetric half-bridge flyback converter (AHB) that can realize a wide range of voltage gains is proposed. This type of topology utilizes the idea of topology morphing to realize the mode transition between LLC mode and AHB mode by adding a switch. The sharing of the same set of resonant tank parameters for both LLC and AHB can be realized by suitable resonant tank parameter design, which allows this topology to use the AHB mode at low voltage gains and the full-bridge LLC mode (FBLLC) and half-bridge LLC (HBLLC) modes at higher voltage gains, and each topology operates in its more suitable operating range. The design considerations, design ideas of this topology are discussed in this paper. Finally, the performance and realizability of the proposed topology are confirmed by simulation results.

Original languageEnglish
Title of host publicationIECON 2024 - 50th Annual Conference of the IEEE Industrial Electronics Society, Proceedings
PublisherIEEE (Institute of Electrical and Electronics Engineers)
Publication date2024
Article number10905804
ISBN (Print)978-1-6654-6455-0
ISBN (Electronic)978-1-6654-6454-3
DOIs
Publication statusPublished - 2024
Event50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024 - Chicago, United States
Duration: 3 Nov 20246 Nov 2024

Conference

Conference50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024
Country/TerritoryUnited States
CityChicago
Period03/11/202406/11/2024
SponsorIEEE Industrial Electronics Society (IES)
SeriesIECON Proceedings (Industrial Electronics Conference)
ISSN2162-4704

Bibliographical note

Publisher Copyright:
© 2024 IEEE.

Keywords

  • asymmetric half bridge flyback converter (AHB)
  • LLC resonant converter
  • topology morphing
  • wide voltage gain

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