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1. Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Author

Guidong Zhang, Junming Zeng, Samson Shenglong Yu, Wenxun Xiao, Bo Zhang, Si-Zhe Chen, and Yun Zhang

Subjects
AC-DC converter, power factor correction, LLC resonant converter, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

This paper presents and analyzes an AC-DC power converter structure, which is comprised of a Power Factor Correction (PFC) module and a LLC resonant DC-DC converter module. This converter only uses two switches, and requires three less diodes and one less switch compared to popular LLC resonant converter solutions. Compared to its conventional counterpart, the rectifier of interest has high energy efficiency while a smaller size, owing to the soft-switching in the LLC resonant converter. Detailed theoretical analyses are conducted in this study, followed by software simulation and hardware experimentation, which demonstrate that the single stage double-switched (DS)-LLC rectifier is able to realize unity power factor and a wide output range, indicating its effectiveness and applicability.

Published
2020
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2. Control Design and Performance Analysis of a Double-Switched LLC Resonant Rectifier for Unity Power Factor and Soft-Switching

Author

Chen Sizhe, Guidong Zhang, Wenxun Xiao, Samson Shenglong Yu, Junming Zeng, Bo Zhang, and Yun Zhang

Subjects
High energy, General Computer Science, Computer science, business.industry, 020208 electrical & electronic engineering, General Engineering, Electrical engineering, 020302 automobile design & engineering, 02 engineering and technology, Power factor, Software simulation, Power (physics), Rectifier, LLC resonant converter, 0203 mechanical engineering, Soft switching, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, lcsh:Electrical engineering. Electronics. Nuclear engineering, Resonant converter, AC-DC converter, business, lcsh:TK1-9971, Diode, power factor correction
Abstract

This paper presents and analyzes an AC-DC power converter structure, which is comprised of a Power Factor Correction (PFC) module and a LLC resonant DC-DC converter module. This converter only uses two switches, and requires three less diodes and one less switch compared to popular LLC resonant converter solutions. Compared to its conventional counterpart, the rectifier of interest has high energy efficiency while a smaller size, owing to the soft-switching in the LLC resonant converter. Detailed theoretical analyses are conducted in this study, followed by software simulation and hardware experimentation, which demonstrate that the single stage double-switched (DS)-LLC rectifier is able to realize unity power factor and a wide output range, indicating its effectiveness and applicability.

Published
2020

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