A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range

A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range

In order to improve the efficiency of battery charging and discharging in a wide conversion gain, a dual-transformer-based full bridge converter using a block capacitor was proposed. By adding the blocking capacitor in the primary side of one transformer, an extended zero voltage switching (ZVS) ran...

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Bibliographic Details
Main Authors: Yanke Liang, Xu Liu, Guokai Xu, Shuaichao Yue
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Dual-transformer
blocking capacitor
ZVS
symmetrical
Online Access:https://ieeexplore.ieee.org/document/9194005/
id doaj-3f332a31de4744f7b050778425824b53
record_format Article
spelling doaj-3f332a31de4744f7b050778425824b532021-03-30T04:15:38ZengIEEEIEEE Access2169-35362020-01-01817056817057810.1109/ACCESS.2020.30217479194005A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS RangeYanke Liang0https://orcid.org/0000-0001-8150-7011Xu Liu1https://orcid.org/0000-0001-5140-5997Guokai Xu2https://orcid.org/0000-0003-1807-3403Shuaichao Yue3https://orcid.org/0000-0002-5609-0346State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, ChinaState Grid Linyi Power Supply Company, Linyi, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, ChinaIn order to improve the efficiency of battery charging and discharging in a wide conversion gain, a dual-transformer-based full bridge converter using a block capacitor was proposed. By adding the blocking capacitor in the primary side of one transformer, an extended zero voltage switching (ZVS) range is obtained in a wide output voltage range, which is achieved by regulating the secondary voltage of the transformers to match the output voltage according to the voltage-second balance in both boost and buck modes. Besides, a mirror-symmetrical modulation is introduced in reverse power flow to avoid a limited ZVS range of the traditional dual-transformer converter. The power characteristics and ZVS range are analyzed in detailed. The analysis results and transformer current are compared with the published dual-transformer converter and the conventional dual active bridge (DAB) converter to demonstrate the advantages. Finally, a 300W prototype was built and tested to verify the effectiveness of the proposed converter.https://ieeexplore.ieee.org/document/9194005/Dual-transformerblocking capacitorZVSsymmetrical
collection DOAJ
language English
format Article
sources DOAJ
author Yanke Liang
Xu Liu
Guokai Xu
Shuaichao Yue
spellingShingle Yanke Liang
Xu Liu
Guokai Xu
Shuaichao Yue
A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
IEEE Access
Dual-transformer
blocking capacitor
ZVS
symmetrical
author_facet Yanke Liang
Xu Liu
Guokai Xu
Shuaichao Yue
author_sort Yanke Liang
title A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
title_short A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
title_full A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
title_fullStr A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
title_full_unstemmed A Dual-Transformer-Based Bidirectional DC–DC Converter of Using Blocking Capacitor for Wide ZVS Range
title_sort dual-transformer-based bidirectional dc–dc converter of using blocking capacitor for wide zvs range
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description In order to improve the efficiency of battery charging and discharging in a wide conversion gain, a dual-transformer-based full bridge converter using a block capacitor was proposed. By adding the blocking capacitor in the primary side of one transformer, an extended zero voltage switching (ZVS) range is obtained in a wide output voltage range, which is achieved by regulating the secondary voltage of the transformers to match the output voltage according to the voltage-second balance in both boost and buck modes. Besides, a mirror-symmetrical modulation is introduced in reverse power flow to avoid a limited ZVS range of the traditional dual-transformer converter. The power characteristics and ZVS range are analyzed in detailed. The analysis results and transformer current are compared with the published dual-transformer converter and the conventional dual active bridge (DAB) converter to demonstrate the advantages. Finally, a 300W prototype was built and tested to verify the effectiveness of the proposed converter.
topic Dual-transformer
blocking capacitor
ZVS
symmetrical
url https://ieeexplore.ieee.org/document/9194005/
work_keys_str_mv AT yankeliang adualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT xuliu adualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT guokaixu adualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT shuaichaoyue adualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT yankeliang dualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT xuliu dualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT guokaixu dualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
AT shuaichaoyue dualtransformerbasedbidirectionaldcx2013dcconverterofusingblockingcapacitorforwidezvsrange
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