A Novel Bidirectional DC/DC Converter with Wide Voltage Gain Range for Energy Storage Device

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI:10.1109/PEAC.2018.8590568

Zhishuang Wang, Ping-Jian Wang, Huakun Bi

{"title":"A Novel Bidirectional DC/DC Converter with Wide Voltage Gain Range for Energy Storage Device","authors":"Zhishuang Wang, Ping-Jian Wang, Huakun Bi","doi":"10.1109/PEAC.2018.8590568","DOIUrl":null,"url":null,"abstract":"A novel bidirectional DC/DC converter as interface between energy storage device and DC bus is proposed in this paper. Compared with bidirectional traditional cascaded DC/DC converter, this new converter is also composed of two conventional two-level DC/DC converters. However, the two two-level converters in this converter are connected in parallel on the input side rather than in series. In addition, the voltage gain of the proposed converter is higher than bidirectional traditional cascaded DC/DC converter, because this new converter establishes the higher charging voltage of inductor in the step-up mode, which makes the inductor store more energy and transfer more energy to the high voltage side. Besides, the high voltage sides of the two converters are connected in series to constitute the whole high voltage side of converter, which further enhances the voltage gain and reduces the voltage stress on the power switches and capacitors. The operating principle and the steady-state analysis are presented detailedly in this paper. Finally, a 400W experimental prototype of the proposed converter is developed to verify the correctness of the theoretical analysis. The maximum efficiency of the converter is 95.23% in step down mode and 94.54% in step up mode.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","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.2018.8590568","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

A novel bidirectional DC/DC converter as interface between energy storage device and DC bus is proposed in this paper. Compared with bidirectional traditional cascaded DC/DC converter, this new converter is also composed of two conventional two-level DC/DC converters. However, the two two-level converters in this converter are connected in parallel on the input side rather than in series. In addition, the voltage gain of the proposed converter is higher than bidirectional traditional cascaded DC/DC converter, because this new converter establishes the higher charging voltage of inductor in the step-up mode, which makes the inductor store more energy and transfer more energy to the high voltage side. Besides, the high voltage sides of the two converters are connected in series to constitute the whole high voltage side of converter, which further enhances the voltage gain and reduces the voltage stress on the power switches and capacitors. The operating principle and the steady-state analysis are presented detailedly in this paper. Finally, a 400W experimental prototype of the proposed converter is developed to verify the correctness of the theoretical analysis. The maximum efficiency of the converter is 95.23% in step down mode and 94.54% in step up mode.

查看原文本刊更多论文

一种用于储能装置的宽电压增益范围双向DC/DC变换器

提出了一种新型的双向DC/DC变换器作为储能装置与直流母线之间的接口。与传统的双向级联DC/DC变换器相比，这种新型变换器也是由两个传统的双电平DC/DC变换器组成的。然而，该变换器中的两个双电平变换器在输入侧并联而不是串联连接。此外，与传统的双向级联DC/DC变换器相比，本文提出的变换器的电压增益更高，因为这种新型变换器在升压模式下建立了较高的电感充电电压，使得电感存储更多的能量，并将更多的能量转移到高压侧。另外，将两个变换器的高压侧串联起来，构成整个变换器的高压侧，进一步提高了电压增益，减小了电源开关和电容器的电压应力。本文详细介绍了其工作原理和稳态分析。最后，研制了400W变换器的实验样机，验证了理论分析的正确性。在降压模式下转换器的最大效率为95.23%，在升压模式下转换器的最大效率为94.54%。

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