A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters

Zian Qin; Yanfeng Shen; Huai Wang; Frede Blaabjerg

doi:10.1109/APEC.2017.7930709

A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters

Zian Qin, Yanfeng Shen, Huai Wang, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

3 Citations (Scopus)

658 Downloads (Pure)

Abstract

A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.

Original language	English
Title of host publication	Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
Publisher	IEEE Press
Publication date	Mar 2017
Pages	300-306
ISBN (Print)	978-1-5090-5366-7
DOIs	https://doi.org/10.1109/APEC.2017.7930709
Publication status	Published - Mar 2017
Event	2017 IEEE Applied Power Electronics Conference and Exposition (APEC) - Tampa Convention Center, Tampa, FL, United States Duration: 26 Mar 2017 → 30 Mar 2017

Conference

Conference	2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
Location	Tampa Convention Center
Country/Territory	United States
City	Tampa, FL
Period	26/03/2017 → 30/03/2017

Series	IEEE Applied Power Electronics Conference and Exposition (APEC)
ISSN	2470-6647

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A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge ConvertersAccepted author manuscript, 1.39 MB

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Crossroads: A unique high-reliability power backup solution
Blaabjerg, F.
EUDP
01/02/2015 → 15/01/2017
Project: Research

Cite this

@inproceedings{6846e874db7e4bbdbf678ec33cb8d312,

title = "A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters",

abstract = "A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.",

author = "Zian Qin and Yanfeng Shen and Huai Wang and Frede Blaabjerg",

year = "2017",

month = mar,

doi = "10.1109/APEC.2017.7930709",

language = "English",

isbn = "978-1-5090-5366-7",

series = "IEEE Applied Power Electronics Conference and Exposition (APEC)",

publisher = "IEEE Press",

pages = "300--306",

booktitle = "Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC)",

note = "2017 IEEE Applied Power Electronics Conference and Exposition (APEC) ; Conference date: 26-03-2017 Through 30-03-2017",

}

Qin, Z, Shen, Y, Wang, H & Blaabjerg, F 2017, A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters. in Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE Press, IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 300-306, 2017 IEEE Applied Power Electronics Conference and Exposition (APEC), Tampa, FL, United States, 26/03/2017. https://doi.org/10.1109/APEC.2017.7930709

A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters. / Qin, Zian; Shen, Yanfeng; Wang, Huai et al.
Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE Press, 2017. p. 300-306 (IEEE Applied Power Electronics Conference and Exposition (APEC)).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters

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AU - Shen, Yanfeng

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AU - Blaabjerg, Frede

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N2 - A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.

AB - A voltage doubler circuit is realized to extend the soft-switching range of Dual Active Bridge (DAB) converters. No extra hardware is added to the DAB to form this circuit, since it is composed of the dc blocking capacitor and the low side full bridge converter, which already exist in DAB. With the voltage doubler, the DAB converter can achieve soft switching and high efficiency when the low side dc voltage is close to 2 pu (1 pu is the high side dc voltage divided by the transformer turn ratio), which can be realized only when the low side dc voltage is close to 1 pu by using the conventional phase shift modulation in DAB. Thus the soft switching range is extended. The soft switching boundary conditions are derived. A map to show the soft switching or hard switching in the full load and voltage range is obtained. The feasibility and effectiveness of the proposed method is finally verified by experiments.

U2 - 10.1109/APEC.2017.7930709

DO - 10.1109/APEC.2017.7930709

M3 - Article in proceeding

SN - 978-1-5090-5366-7

T3 - IEEE Applied Power Electronics Conference and Exposition (APEC)

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BT - Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition (APEC)

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ER -

A Voltage Doubler Circuit to Extend the Soft-switching Range of Dual Active Bridge Converters

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Crossroads: A unique high-reliability power backup solution

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