A Combined DC-DC Converter Suitable for Wide Output Voltage Range

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI:10.1109/PEAC.2018.8590390

Yisheng Yuan, Xiang-long Mei, Zhong-yi Zhang

{"title":"A Combined DC-DC Converter Suitable for Wide Output Voltage Range","authors":"Yisheng Yuan, Xiang-long Mei, Zhong-yi Zhang","doi":"10.1109/PEAC.2018.8590390","DOIUrl":null,"url":null,"abstract":"This paper proposes a three level DC/DC converter for wide output voltage range. The converter consist of two parallel main bridge arm and auxiliary bridge arm, and a main transformer and an auxiliary transformer connected in cascade. The converter has two operation modes: low voltage mode and high voltage mode. The auxiliary bridge turned-off to reduce the converter loss at low voltage mode and turned-on to improve the output voltage at high voltage mode. Compared with the conventional converter, the main transformer of the proposed has a lower turn ratio. This paper analyzes the loss of conventional converter, comparing the efficiency between proposed converter and conventional converter at different output voltage modes, and concluding that the proposed converter is more efficient at low voltage mode. A prototype of 2000W is built. The experimental data show that the proposed converter efficiency can still be 94% at low voltage mode, is with 3% higher efficiency than that of the conventional converter, verifying the correctness of the theoretical analysis.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEAC.2018.8590390","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

This paper proposes a three level DC/DC converter for wide output voltage range. The converter consist of two parallel main bridge arm and auxiliary bridge arm, and a main transformer and an auxiliary transformer connected in cascade. The converter has two operation modes: low voltage mode and high voltage mode. The auxiliary bridge turned-off to reduce the converter loss at low voltage mode and turned-on to improve the output voltage at high voltage mode. Compared with the conventional converter, the main transformer of the proposed has a lower turn ratio. This paper analyzes the loss of conventional converter, comparing the efficiency between proposed converter and conventional converter at different output voltage modes, and concluding that the proposed converter is more efficient at low voltage mode. A prototype of 2000W is built. The experimental data show that the proposed converter efficiency can still be 94% at low voltage mode, is with 3% higher efficiency than that of the conventional converter, verifying the correctness of the theoretical analysis.

查看原文本刊更多论文

适用于宽输出电压范围的组合式DC-DC变换器

提出了一种宽输出电压范围的三电平DC/DC变换器。该变换器由两个并联的主桥臂和副桥臂组成，主变压器和副变压器级联连接。变换器有低压模式和高压模式两种工作模式。在低压模式下，辅助桥关断是为了降低变换器的损耗，在高压模式下，辅助桥通是为了提高输出电压。与传统变换器相比，所提出的主变压器具有较低的匝比。本文分析了传统变换器的损耗，比较了该变换器与传统变换器在不同输出电压模式下的效率，得出该变换器在低压模式下效率更高的结论。建造了2000W的原型机。实验数据表明，所提出的变换器在低压模式下效率仍可达94%，比传统变换器效率提高3%，验证了理论分析的正确性。

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

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)

自引率

0.00%

发文量