Light-Load Efficiency Improvement in Buck-Derived Single-Stage Single-Switch PFC Converters

Lu, Dylan Dah-Chuan; Ki, Shu-Kong

doi:10.1109/tpel.2012.2221744

Cited by 44 publications

(18 citation statements)

References 16 publications

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“…This interleaved flyback converter method is a isolated power supply. Hence the required output power achieved by adding this converter to parallel (Lu and Ki, 2013;Mahdavi and Farzanehfard, 2011;Moschopoulos and Jain, 2004). This interleaved flyback converter to improve the power rating more than 100 watts.…”

Section: Literature Reviewmentioning

confidence: 99%

Design of interleaved flyback converter

Ramya

Antony

Immanuel

et al. 2019

IJIE

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This paper proposes a transformer design to achieve soft switching low power flyback converter. This proposed paper is having the soft switching which reduces the power loss in main switch while improving the over all EMI in the converter. It also proposes the design methodology for the transformer in a flyback converter which automatically accomplishes the complete soft switching of the main switch.

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Section: Literature Reviewmentioning

confidence: 99%

Design of interleaved flyback converter

Ramya

Antony

Immanuel

et al. 2019

IJIE

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“…According to (23), the current flowing through the output capacitor C o , i c , can be obtained to be…”

Section: Output Capacitor Designmentioning

confidence: 99%

“…However, the boost PFC rectifier has several disadvantages because of its high output voltage: (i) the voltage stresses on the components are relatively high; (ii) a second stage DC-DC converter is usually used to step down the high voltage to a low voltage, which results in a high cost; and (iii) the relatively high common noise will be yielded. Accordingly, the active buck PFC rectifiers are presented [16][17][18][19][20][21][22][23][24][25]. The buck PFC rectifiers can transfer a high input AC voltage to a low DC voltage, and the voltage stresses on the components are much higher than that of the boost PFC rectifier.…”

Section: Introductionmentioning

confidence: 99%

A new bridgeless buck PFC rectifier

Hwu

Shieh

Jiang

2016

Circuit Theory & Apps

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Summary In this study, a new bridgeless buck power factor correction (PFC) rectifier is presented. The proposed buck PFC rectifier is designed to operate in the discontinuous conduction mode (DCM). Because of the DCM operation, the control scheme of the proposed buck PFC rectifier is simple and easy, and the reverse recovery problem of the diodes can be alleviated. Because the input current follows the input voltage naturally, the current loop circuit is not required. Thus, only the traditional voltage‐mode control is employed to sense the output voltage, and a suitable control effort for the proposed buck PFC rectifier is generated to drive the power switches. Consequently, the output voltage of the proposed buck PFC rectifier can be kept at a desired value. Finally, the mathematical deductions and experimental results are provided to verify the effectiveness of the proposed bridgeless buck PFC rectifier. Copyright © 2016 John Wiley & Sons, Ltd.

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“…In the single-stage AC-DC converters, DC-DC converters such as a buck converter and a boost converter, and their modified versions are adopted as a PFC preregulator. When a buck converter is adopted as a PFC preregulator, high power factor cannot be achieved due to dead angle of the input current [8], [9]. Therefore, its applications may be limited.…”

Section: Introductionmentioning

confidence: 99%

Soft-Switching Two-Switch Resonant AC–DC Converter With High Power Factor

Lee

2016

IEEE Trans. Ind. Electron.

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 Abstract-A soft-switching two-switch resonant power factor correction (PFC) converter is presented. In this converter, a boost PFC circuit is integrated with a soft-switching resonant converter. High power factor is achieved by the boost PFC circuit. The voltage across the main switches is confined to the dc-link voltage and the energy of the transformer leakage inductance is also recycled. Soft-switching operation of main switches and output diodes is achieved with a resonant manner and the switching losses are significantly reduced. Therefore, the overall efficiency is improved. The presented theoretical analysis is verified by a prototype of a 48V, 60W converter. where he is currently a Professor. His research interests include the modeling, design and control of power converters, soft-switching power converters, resonant converters, PFC circuits, and driving circuits for plasma display panels.

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Light-Load Efficiency Improvement in Buck-Derived Single-Stage Single-Switch PFC Converters

Cited by 44 publications

References 16 publications

Design of interleaved flyback converter

Design of interleaved flyback converter

A new bridgeless buck PFC rectifier

Soft-Switching Two-Switch Resonant AC–DC Converter With High Power Factor

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