Low output ripple single-stage bridgeless buck-boost PFC converter with dual-inductor multiplexing

被引：0

作者：

Chen Z. ^{[1
]}

Xu J. ^{[1
]}

Chen X. ^{[1
]}

Qi J. ^{[1
]}

机构：

[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2023年 / 27卷 / 11期

关键词：

bridgeless; buck-boost; inductor conduction mode; inductor multiplexing; low output current ripple; power factor correction;

D O I：

10.15938/j.emc.2023.11.004

中图分类号：

学科分类号：

摘要：

Single-stage buck-boost power factor correction (PFC) converter featuring high power factor (PF) and step-up/ down capabilities, is widely used for low power non-isolated LED applications (≤25 W), however, the launch of the carbon neutralization policy requires the converter to further improve performance. A single-stage bridgeless buck-boost converter with dual-inductor multiplexing was proposed with two inductors alternatively operating in discontinuous conduction mode (DCM) and continuous conduction mode (CCM). The inductor operating in CCM helps filter switching frequency ripple, and in DCM allows the converter to utilize simple single closed-loop control to achieve output current regulation and near unity PF. Harmonic injection technique is applicable to the proposed converter to further reduce output current ripple. A tradeoff between PF and output current ripple was achieved. Experimental tests verify the topology effectiveness and theoretical correctness. © 2023 Editorial Department of Electric Machines and Control. All rights reserved.

引用

页码：30 / 39

页数：9

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