New SEPIC Derived Semi-Bridgeless PFC Converter for Battery Charging Application

IF 3.4 3区 计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Access Pub Date : 2025-01-13 DOI:10.1109/ACCESS.2025.3529351
Manish Kumar Dwivedi;R. Jayapragash
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Abstract

This paper introduces an AC-DC semi-bridgeless dual-switch SEPIC converter, specifically designed for battery charging applications. It focuses on improving power factor (PF) by substantially reducing total harmonic distortion (THD) in the AC input current through a modified converter structure. Additionally, the converter achieves significant reductions in the sizes of its inductors as it operates in discontinuous conduction mode (DCM) to achieve the low current THD. This converter topology employs two power switches to realize the power factor correction (PFC). Primary novelty of the proposed converter lies in designing and selecting a circuit structure which ensures low THD and unity power factor by the energy balance principle of inductors and capacitors. Additionally, the incorporation blocking diodes in the proposed converter effectively eliminates circulating current through input inductor which in turn makes the converter more efficient. This novel circuit structure also eliminates the requirement of additional closed loop control algorithm for PFC. To validate the proposed concept, a prototype converter of 100W/53V is developed and tested. This converter yields a current THD of 2.1%, unity PF and efficiency of 92.4% at rated condition during hardware testing. The paper also conducts a comparative analysis with similar other converters to assess the performance of the proposed solution thoroughly. This comprehensive study underscores the effectiveness of the new converter for PFC and reducing input current THD for battery charging applications.
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用于电池充电的新型SEPIC衍生半无桥PFC变换器
本文介绍了一种专门为电池充电应用而设计的交直流半无桥双开关SEPIC变换器。它的重点是通过改进的变换器结构,通过大幅度降低交流输入电流中的总谐波失真(THD)来提高功率因数(PF)。此外,变换器在断续传导模式(DCM)下工作,实现了低电流THD,大大减小了电感的尺寸。该转换器拓扑结构采用两个功率开关来实现功率因数校正(PFC)。该变换器的主要新颖之处在于利用电感和电容的能量平衡原理,设计和选择了一种保证低THD和统一功率因数的电路结构。此外,在所提出的变换器中集成的阻塞二极管有效地消除了通过输入电感的循环电流,从而使变换器更高效。这种新颖的电路结构也消除了对pfc额外闭环控制算法的需求。为了验证所提出的概念,开发并测试了100W/53V的原型转换器。在硬件测试中,该变换器在额定条件下产生的电流THD为2.1%,单位PF和效率为92.4%。本文还与其他类似的变换器进行了比较分析,以全面评估所提出的方案的性能。这项全面的研究强调了新型PFC转换器的有效性,并降低了电池充电应用的输入电流THD。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Access
IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC
CiteScore
9.80
自引率
7.70%
发文量
6673
审稿时长
6 weeks
期刊介绍: IEEE Access® is a multidisciplinary, open access (OA), applications-oriented, all-electronic archival journal that continuously presents the results of original research or development across all of IEEE''s fields of interest. IEEE Access will publish articles that are of high interest to readers, original, technically correct, and clearly presented. Supported by author publication charges (APC), its hallmarks are a rapid peer review and publication process with open access to all readers. Unlike IEEE''s traditional Transactions or Journals, reviews are "binary", in that reviewers will either Accept or Reject an article in the form it is submitted in order to achieve rapid turnaround. Especially encouraged are submissions on: Multidisciplinary topics, or applications-oriented articles and negative results that do not fit within the scope of IEEE''s traditional journals. Practical articles discussing new experiments or measurement techniques, interesting solutions to engineering. Development of new or improved fabrication or manufacturing techniques. Reviews or survey articles of new or evolving fields oriented to assist others in understanding the new area.
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