A novel high efficiency quasi-resonant converter

Tianyu Zhu; Jianze Wang; Yanchao Ji; Yiqi Liu

doi:10.3390/en11081961

A novel high efficiency quasi-resonant converter

Tianyu Zhu
, Jianze Wang
, Yanchao Ji^*
, Yiqi Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.

Original language	English
Article number	1961
Journal	Energies
Volume	11
Issue number	8
DOIs	https://doi.org/10.3390/en11081961
State	Published - Aug 2018
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Constant frequency
Higher overall efficiency
Quasi-resonant
Smaller volume
Switch-control-capacitor (SCC)
Zero current switching (ZCS)
Zero voltage switching (ZVS)

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10.3390/en11081961

Cite this

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title = "A novel high efficiency quasi-resonant converter",

abstract = "In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.",

keywords = "Constant frequency, Higher overall efficiency, Quasi-resonant, Smaller volume, Switch-control-capacitor (SCC), Zero current switching (ZCS), Zero voltage switching (ZVS)",

author = "Tianyu Zhu and Jianze Wang and Yanchao Ji and Yiqi Liu",

note = "Publisher Copyright: {\textcopyright} 2018 by the authors.",

year = "2018",

month = aug,

doi = "10.3390/en11081961",

language = "英语",

volume = "11",

journal = "Energies",

issn = "1996-1073",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "8",

}

TY - JOUR

T1 - A novel high efficiency quasi-resonant converter

AU - Zhu, Tianyu

AU - Wang, Jianze

AU - Ji, Yanchao

AU - Liu, Yiqi

PY - 2018/8

Y1 - 2018/8

N2 - In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.

AB - In this paper, a new constant-frequency quasi-resonant converter is proposed. Compared with the traditional LLC converter, the proposed converter can effectively reduce the range of the operating frequency. The output voltage is changed to adjust the reactance of the resonant cavity. The proposed converter has a better loss factor. To verify the theoretical analysis and soft-switching condition, a 250W, 100 V output prototype was built and compared with the full-bridge LLC converter. Analysis and experimental results verify that a smaller operating frequency range and volume of the transformers, a soft-switching condition, and a higher overall efficiency are achieved with the proposed converter.

KW - Constant frequency

KW - Higher overall efficiency

KW - Quasi-resonant

KW - Smaller volume

KW - Switch-control-capacitor (SCC)

KW - Zero current switching (ZCS)

KW - Zero voltage switching (ZVS)

UR - https://www.scopus.com/pages/publications/85052614166

U2 - 10.3390/en11081961

DO - 10.3390/en11081961

M3 - 文章

AN - SCOPUS:85052614166

SN - 1996-1073

VL - 11

JO - Energies

JF - Energies

IS - 8

M1 - 1961

ER -

A novel high efficiency quasi-resonant converter

Abstract

UN SDGs

Keywords

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