A Single-Stage Bridgeless Isolated PFC Converter with Wide Output Voltage Range and Low Voltage Stress

被引：0

作者：

Sun K. ^{[1
]}

Ben H. ^{[1
]}

Meng T. ^{[2
]}

Zhao Z. ^{[1
]}

Ding M. ^{[1
]}

机构：

[1] School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin

[2] School of Mechanical and Electrical Engineering, Heilongjiang University, Harbin

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 08期

关键词：

High power factor; Low voltage stress; Single-stage bridgeless isolated PFC converter; Wide output voltage range;

D O I：

10.19595/j.cnki.1000-6753.tces.210316

中图分类号：

学科分类号：

摘要：

Since the single-stage bridgeless isolated power factor correction (PFC) converter has high voltage stress of the MOSFET, low power factor and high total harmonic distortion when it works in the Buck mode, a novel single-stage bridgeless isolated PFC converter is presented. This converter adopts a dual-winding split capacitor structure, which reduces the voltage stress of the MOSFET and the diodes. The power frequency MOSFET can eliminate the input current distortion, there by effectively realizing high power factor in Buck mode and broadening the range of output voltage. When the converter works in discontinue conduction mode (DCM), zero current switching (ZCS) of the diode can be achieved. The working principle and operating characteristics of the converter are analyzed in detail. Finally, a 50W experimental prototype is built to verify that the converter can work in a wide output voltage range, and has the advantages of small device voltage stress, low THD, high power factor, simple control method and high conversion efficiency. © 2022, Electrical Technology Press Co. Ltd. All right reserved.

引用

页码：1991 / 2005

页数：14

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