A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency

Tianhua Zhu; Fang Zhuo; Fangzhou Zhao; Kefan Yu; Feng Wang; Ruijie Song

doi:10.1109/APEC39645.2020.9124242

A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency

Tianhua Zhu, Fang Zhuo, Fangzhou Zhao, Kefan Yu, Feng Wang, Ruijie Song

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

6 Citationer (Scopus)

Abstract

CLLC resonant converter normally faces light-load problems of unsatisfying voltage regulation and efficiency. This paper presents a novel asymmetric pulse width modulation (APWM) control scheme to improve the voltage regulation ability and efficiency of full-bridge CLLC resonant converter. In this control scheme, the proposed APWM method is utilized to reach the desired voltage gain lower than unity at resonant frequency with soft switching of all switches in light-load conditions, and the pulse frequency modulation (PFM) is combined to realize the voltage gain higher than unity. In comparison with traditional PFM, the proposed control scheme effectively regulates the output voltage and achieves satisfactory efficiency over entire load conditions. This control scheme is verified by experiments on a 21.5V/380V and 200W GaN based full bridge CLLC converter prototype, proving desirable voltage gain and favorable efficiency from light-load to full-load conditions.

Originalsprog	Engelsk
Titel	APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
Antal sider	5
Forlag	IEEE Signal Processing Society
Publikationsdato	mar. 2020
Sider	2081-2085
Artikelnummer	9124242
ISBN (Elektronisk)	9781728148298
DOI	https://doi.org/10.1109/APEC39645.2020.9124242
Status	Udgivet - mar. 2020
Begivenhed	35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, USA Varighed: 15 mar. 2020 → 19 mar. 2020

Konference

Konference	35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Land/Område	USA
By	New Orleans
Periode	15/03/2020 → 19/03/2020
Sponsor	IEEE Power Electronics Society (PELS), Industry Applications Society (IAS), Power Sources Manufacturers Association (PSMA)

Navn	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Vol/bind	2020-March

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Publisher Copyright:
© 2020 IEEE.

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10.1109/APEC39645.2020.9124242

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Citationsformater

Zhu, T., Zhuo, F., Zhao, F., Yu, K., Wang, F., & Song, R. (2020). A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency. I APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition (s. 2081-2085). Artikel 9124242 IEEE Signal Processing Society. https://doi.org/10.1109/APEC39645.2020.9124242

Zhu, Tianhua ; Zhuo, Fang ; Zhao, Fangzhou et al. / A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency. APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition. IEEE Signal Processing Society, 2020. s. 2081-2085 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, Bind 2020-March).

@inproceedings{891ee663f52e449dbd91157710ac7d9c,

title = "A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency",

abstract = "CLLC resonant converter normally faces light-load problems of unsatisfying voltage regulation and efficiency. This paper presents a novel asymmetric pulse width modulation (APWM) control scheme to improve the voltage regulation ability and efficiency of full-bridge CLLC resonant converter. In this control scheme, the proposed APWM method is utilized to reach the desired voltage gain lower than unity at resonant frequency with soft switching of all switches in light-load conditions, and the pulse frequency modulation (PFM) is combined to realize the voltage gain higher than unity. In comparison with traditional PFM, the proposed control scheme effectively regulates the output voltage and achieves satisfactory efficiency over entire load conditions. This control scheme is verified by experiments on a 21.5V/380V and 200W GaN based full bridge CLLC converter prototype, proving desirable voltage gain and favorable efficiency from light-load to full-load conditions.",

keywords = "APWM control, CLLC resonant converter, efficiency, light-load problems",

author = "Tianhua Zhu and Fang Zhuo and Fangzhou Zhao and Kefan Yu and Feng Wang and Ruijie Song",

note = "Funding Information: This work is supported by National Natural Science Foundation of China (51977171) and Shanxi Province Science and Technology Major Project (20181102028). Publisher Copyright: {\textcopyright} 2020 IEEE.; 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 ; Conference date: 15-03-2020 Through 19-03-2020",

year = "2020",

month = mar,

doi = "10.1109/APEC39645.2020.9124242",

language = "English",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

pages = "2081--2085",

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address = "United States",

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Zhu, T, Zhuo, F, Zhao, F, Yu, K, Wang, F & Song, R 2020, A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency. i APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition., 9124242, IEEE Signal Processing Society, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, bind 2020-March, s. 2081-2085, 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020, New Orleans, USA, 15/03/2020. https://doi.org/10.1109/APEC39645.2020.9124242

A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency. / Zhu, Tianhua; Zhuo, Fang; Zhao, Fangzhou et al.
APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition. IEEE Signal Processing Society, 2020. s. 2081-2085 9124242 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, Bind 2020-March).

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

TY - GEN

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AU - Zhu, Tianhua

AU - Zhuo, Fang

AU - Zhao, Fangzhou

AU - Yu, Kefan

AU - Wang, Feng

AU - Song, Ruijie

N1 - Funding Information: This work is supported by National Natural Science Foundation of China (51977171) and Shanxi Province Science and Technology Major Project (20181102028). Publisher Copyright: © 2020 IEEE.

PY - 2020/3

Y1 - 2020/3

N2 - CLLC resonant converter normally faces light-load problems of unsatisfying voltage regulation and efficiency. This paper presents a novel asymmetric pulse width modulation (APWM) control scheme to improve the voltage regulation ability and efficiency of full-bridge CLLC resonant converter. In this control scheme, the proposed APWM method is utilized to reach the desired voltage gain lower than unity at resonant frequency with soft switching of all switches in light-load conditions, and the pulse frequency modulation (PFM) is combined to realize the voltage gain higher than unity. In comparison with traditional PFM, the proposed control scheme effectively regulates the output voltage and achieves satisfactory efficiency over entire load conditions. This control scheme is verified by experiments on a 21.5V/380V and 200W GaN based full bridge CLLC converter prototype, proving desirable voltage gain and favorable efficiency from light-load to full-load conditions.

AB - CLLC resonant converter normally faces light-load problems of unsatisfying voltage regulation and efficiency. This paper presents a novel asymmetric pulse width modulation (APWM) control scheme to improve the voltage regulation ability and efficiency of full-bridge CLLC resonant converter. In this control scheme, the proposed APWM method is utilized to reach the desired voltage gain lower than unity at resonant frequency with soft switching of all switches in light-load conditions, and the pulse frequency modulation (PFM) is combined to realize the voltage gain higher than unity. In comparison with traditional PFM, the proposed control scheme effectively regulates the output voltage and achieves satisfactory efficiency over entire load conditions. This control scheme is verified by experiments on a 21.5V/380V and 200W GaN based full bridge CLLC converter prototype, proving desirable voltage gain and favorable efficiency from light-load to full-load conditions.

KW - APWM control

KW - CLLC resonant converter

KW - efficiency

KW - light-load problems

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T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

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EP - 2085

BT - APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition

PB - IEEE Signal Processing Society

T2 - 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020

Y2 - 15 March 2020 through 19 March 2020

ER -

Zhu T, Zhuo F, Zhao F, Yu K, Wang F, Song R. A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency. I APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition. IEEE Signal Processing Society. 2020. s. 2081-2085. 9124242. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, Bind 2020-March). doi: 10.1109/APEC39645.2020.9124242

A Novel APWM Control Scheme for GaN Based Full-Bridge CLLC Resonant Converter with Improved Light-Load Efficiency

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