改进功率因数和输入电流THD的单相SEPIC AC-DC变换器

2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI:10.1109/ICECE.2016.7853934

M. R. T. Hossain, A. H. Abedin, M. A. Choudhury

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引用次数: 7

摘要

提出了一种具有低输入电流THD和高输入功率因数的单相SEPIC (Single end Primary Inductor Converter)交直流变换器的新拓扑结构。与使用单相整流器后接升压DC-DC变换器，或使用带有两个二极管和两个开关的桥式整流器不同，整流器的输入在正、负循环期间被单个双向开关高频斩波，以获得升压/降压AC-DC转换。采用小输入电流滤波器的电路输入电流的总谐波失真(THD)较低。该电路的输入功率因数和转换效率高。不需要额外的控制来实现这些优势。

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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A single phase SEPIC AC-DC Converter with improved power factor and input current THD

A new topology of single-phase SEPIC (Single Ended Primary Inductor Converter) AC-DC converter with low input current THD and high input power factor is proposed. Instead of using a single phase rectifier followed by a boost DC-DC converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a single bi-directional switch to get step-up/step-down AC-DC conversion. Total Harmonic Distortion (THD) of the input current of the proposed circuit with small input current filter is low. Input power factor and the efficiency of conversion of the circuit are high. No additional control is required to achieve the advantages.

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来源期刊

2016 9th International Conference on Electrical and Computer Engineering (ICECE)

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