DC-DC converter with large step-down voltage conversion ratio

2016 IEEE International Conference on Sustainable Energy Technologies (ICSET) Pub Date : 2016-11-01 DOI:10.1109/ICSET.2016.7811768

K. Hwu, W. Jiang

{"title":"DC-DC converter with large step-down voltage conversion ratio","authors":"K. Hwu, W. Jiang","doi":"10.1109/ICSET.2016.7811768","DOIUrl":null,"url":null,"abstract":"An improved non-isolated coupled-inductor-based high-step-down converter is presented in this paper. Compared with other coupled-inductor-based high-step-down converters, the proposed converter features zero DC-offset current and non-pulsating output current. In the proposed converter, one of the DC-blocking capacitors is connected between the input voltage and the coupled inductor. Therefore, the step-down voltage conversion ratio can be much higher than those of the traditional SR buck converter and the tapped-inductor buck converter. Furthermore, its voltage conversion ratio is linear, which makes control easier. Moreover, due to the DC-blocking capacitors, the DC magnetizing inductance current can be reduced to zero. Thus, the magnetizing current can be positive and negative, and the entire core B-H loop can be used, ranging from the first quadrant to the third quadrant. That is, the utilization of the coupled inductor can be upgraded. Also, due to a discrete output inductor, the proposed converter features non-pulsating output current. In this study, detailed theoretical analyses and experimental results are offered to demonstrate the feasibility and effectiveness of the proposed converter.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSET.2016.7811768","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 4

Abstract

An improved non-isolated coupled-inductor-based high-step-down converter is presented in this paper. Compared with other coupled-inductor-based high-step-down converters, the proposed converter features zero DC-offset current and non-pulsating output current. In the proposed converter, one of the DC-blocking capacitors is connected between the input voltage and the coupled inductor. Therefore, the step-down voltage conversion ratio can be much higher than those of the traditional SR buck converter and the tapped-inductor buck converter. Furthermore, its voltage conversion ratio is linear, which makes control easier. Moreover, due to the DC-blocking capacitors, the DC magnetizing inductance current can be reduced to zero. Thus, the magnetizing current can be positive and negative, and the entire core B-H loop can be used, ranging from the first quadrant to the third quadrant. That is, the utilization of the coupled inductor can be upgraded. Also, due to a discrete output inductor, the proposed converter features non-pulsating output current. In this study, detailed theoretical analyses and experimental results are offered to demonstrate the feasibility and effectiveness of the proposed converter.

查看原文本刊更多论文

具有大降压电压转换比的DC-DC变换器

提出了一种改进的基于非隔离耦合电感的高降压变换器。与其他基于耦合电感的高降压变换器相比，该变换器具有零直流偏置电流和无脉动输出电流的特点。在所提出的变换器中，其中一个直流阻塞电容器连接在输入电压和耦合电感之间。因此，降压电压转换比可以大大高于传统的SR降压变换器和抽头电感降压变换器。此外，它的电压转换比是线性的，使控制更容易。此外，由于直流阻塞电容器，直流充磁电感电流可以降低到零。因此，磁化电流可以是正的，也可以是负的，整个铁芯B-H回路可以使用，范围从第一象限到第三象限。也就是说，耦合电感的利用率可以得到提升。此外，由于一个离散输出电感，所提出的变换器具有非脉动输出电流。在本研究中，详细的理论分析和实验结果证明了所提出的转换器的可行性和有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)

自引率

0.00%

发文量