A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements

Mingxiao Li; Chang Wang; Ziwei Ouyang; Michael A.E. Andersen; Teng Long

doi:10.1109/APEC43599.2022.9773435

A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements

Mingxiao Li
, Chang Wang
, Ziwei Ouyang^*
, Michael A.E. Andersen
, Teng Long

^*Corresponding author for this work

University of Cambridge

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This paper proposes a magnetic core geometry with merged winding layouts for a 30/5V 660W LLC resonant converter used in data centers. It enables only one turn for both primary and secondary windings to realize the 6:1 turns ratio. The resonant capacitors are integrated into primary windings to reduce the winding loss and the converter footprint. The merged winding is applied to secondary windings. Compared with the state-of-the-art, the proposed winding layout illustrates more effective proximity effect reduction, smaller footprint, lower DC and AC resistances. The experiment results show that the prototype achieves a peak efficiency of 97.7%.

Original language	English
Title of host publication	Proceedings of 2022 IEEE Applied Power Electronics Conference and Exposition
Publisher	IEEE
Publication date	2022
Pages	8-13
ISBN (Print)	978-1-6654-0689-5
DOIs	https://doi.org/10.1109/APEC43599.2022.9773435
Publication status	Published - 2022
Event	2022 IEEE Applied Power Electronics Conference and Exposition - George R. Brown Convention Center, Houston, United States Duration: 20 Mar 2022 → 24 Mar 2022

Conference

Conference	2022 IEEE Applied Power Electronics Conference and Exposition
Location	George R. Brown Convention Center
Country/Territory	United States
City	Houston
Period	20/03/2022 → 24/03/2022

Keywords

Datacenters
LLC converter
Magnetic components
Windings

Access to Document

10.1109/APEC43599.2022.9773435

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@inproceedings{d2dfa040617a42358f8a504e7d5a0e1a,

title = "A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements",

abstract = "This paper proposes a magnetic core geometry with merged winding layouts for a 30/5V 660W LLC resonant converter used in data centers. It enables only one turn for both primary and secondary windings to realize the 6:1 turns ratio. The resonant capacitors are integrated into primary windings to reduce the winding loss and the converter footprint. The merged winding is applied to secondary windings. Compared with the state-of-the-art, the proposed winding layout illustrates more effective proximity effect reduction, smaller footprint, lower DC and AC resistances. The experiment results show that the prototype achieves a peak efficiency of 97.7\%.",

keywords = "Datacenters, LLC converter, Magnetic components, Windings",

author = "Mingxiao Li and Chang Wang and Ziwei Ouyang and Andersen, \{Michael A.E.\} and Teng Long",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 IEEE Applied Power Electronics Conference and Exposition , APEC 2022 ; Conference date: 20-03-2022 Through 24-03-2022",

year = "2022",

doi = "10.1109/APEC43599.2022.9773435",

language = "English",

isbn = "978-1-6654-0689-5",

pages = "8--13",

booktitle = "Proceedings of 2022 IEEE Applied Power Electronics Conference and Exposition",

publisher = "IEEE",

address = "United States",

}

Li, M, Wang, C, Ouyang, Z , Andersen, MAE & Long, T 2022, A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements. in Proceedings of 2022 IEEE Applied Power Electronics Conference and Exposition. IEEE, pp. 8-13, 2022 IEEE Applied Power Electronics Conference and Exposition , Houston, Texas, United States, 20/03/2022. https://doi.org/10.1109/APEC43599.2022.9773435

A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements. / Li, Mingxiao; Wang, Chang; Ouyang, Ziwei et al.
Proceedings of 2022 IEEE Applied Power Electronics Conference and Exposition. IEEE, 2022. p. 8-13.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements

AU - Li, Mingxiao

AU - Wang, Chang

AU - Ouyang, Ziwei

AU - Andersen, Michael A.E.

AU - Long, Teng

PY - 2022

Y1 - 2022

N2 - This paper proposes a magnetic core geometry with merged winding layouts for a 30/5V 660W LLC resonant converter used in data centers. It enables only one turn for both primary and secondary windings to realize the 6:1 turns ratio. The resonant capacitors are integrated into primary windings to reduce the winding loss and the converter footprint. The merged winding is applied to secondary windings. Compared with the state-of-the-art, the proposed winding layout illustrates more effective proximity effect reduction, smaller footprint, lower DC and AC resistances. The experiment results show that the prototype achieves a peak efficiency of 97.7%.

AB - This paper proposes a magnetic core geometry with merged winding layouts for a 30/5V 660W LLC resonant converter used in data centers. It enables only one turn for both primary and secondary windings to realize the 6:1 turns ratio. The resonant capacitors are integrated into primary windings to reduce the winding loss and the converter footprint. The merged winding is applied to secondary windings. Compared with the state-of-the-art, the proposed winding layout illustrates more effective proximity effect reduction, smaller footprint, lower DC and AC resistances. The experiment results show that the prototype achieves a peak efficiency of 97.7%.

KW - Datacenters

KW - LLC converter

KW - Magnetic components

KW - Windings

U2 - 10.1109/APEC43599.2022.9773435

DO - 10.1109/APEC43599.2022.9773435

M3 - Article in proceedings

AN - SCOPUS:85131668163

SN - 978-1-6654-0689-5

SP - 8

EP - 13

BT - Proceedings of 2022 IEEE Applied Power Electronics Conference and Exposition

PB - IEEE

T2 - 2022 IEEE Applied Power Electronics Conference and Exposition

Y2 - 20 March 2022 through 24 March 2022

ER -

A High Efficiency and High Current LLC Resonant Converter with Improved Interleaving Winding Arrangements

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Keywords

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