A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger

In order to solve the considerable issues of air pollution, climate warming and fossil energy shortage, many governments around the world have formulated policies to encourage the development of electric vehicles over the past decade. This paper proposes a three-level dual-active-bridge (DAB) conver...

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Main Authors: Yang Xuan, Xu Yang, Wenjie Chen, Tao Liu, Xiang Hao
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8918181/
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author Yang Xuan
Xu Yang
Wenjie Chen
Tao Liu
Xiang Hao
author_facet Yang Xuan
Xu Yang
Wenjie Chen
Tao Liu
Xiang Hao
author_sort Yang Xuan
collection DOAJ
description In order to solve the considerable issues of air pollution, climate warming and fossil energy shortage, many governments around the world have formulated policies to encourage the development of electric vehicles over the past decade. This paper proposes a three-level dual-active-bridge (DAB) converter with blocking capacitors for bidirectional electric vehicle charger. In the proposed three-level DAB converter, two blocking capacitors are placed in series with the two windings of the transformer, respectively. Both of the two three-level bridges can operate in four modes, and generate square waves with four kinds of amplitude. Therefore, the proposed three-level DAB converter can adapt to the wide voltage range of electric vehicle. A working mode selection algorithm is developed to minimize the transformer RMS current of the three-level DAB converter. The optimal working mode can be selected in real time according to the voltage ratio and the active power. Finally, experimental results are presented to verify the feasibility and the advantage of the proposed three-level DAB converter.
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spelling doaj.art-63b265fb184e423ba38a20807cc5f0402022-12-21T22:21:44ZengIEEEIEEE Access2169-35362019-01-01717383817384710.1109/ACCESS.2019.29570228918181A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle ChargerYang Xuan0https://orcid.org/0000-0002-5442-885XXu Yang1https://orcid.org/0000-0003-0292-5659Wenjie Chen2https://orcid.org/0000-0002-4116-5392Tao Liu3https://orcid.org/0000-0003-1385-733XXiang Hao4https://orcid.org/0000-0002-3782-1211State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, ChinaTBEA Xinjiang Sunoasis Company, Ltd., Xi’an, ChinaIn order to solve the considerable issues of air pollution, climate warming and fossil energy shortage, many governments around the world have formulated policies to encourage the development of electric vehicles over the past decade. This paper proposes a three-level dual-active-bridge (DAB) converter with blocking capacitors for bidirectional electric vehicle charger. In the proposed three-level DAB converter, two blocking capacitors are placed in series with the two windings of the transformer, respectively. Both of the two three-level bridges can operate in four modes, and generate square waves with four kinds of amplitude. Therefore, the proposed three-level DAB converter can adapt to the wide voltage range of electric vehicle. A working mode selection algorithm is developed to minimize the transformer RMS current of the three-level DAB converter. The optimal working mode can be selected in real time according to the voltage ratio and the active power. Finally, experimental results are presented to verify the feasibility and the advantage of the proposed three-level DAB converter.https://ieeexplore.ieee.org/document/8918181/Asymmetricblocking capacitordual-active-bridgethree-level
spellingShingle Yang Xuan
Xu Yang
Wenjie Chen
Tao Liu
Xiang Hao
A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
IEEE Access
Asymmetric
blocking capacitor
dual-active-bridge
three-level
title A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
title_full A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
title_fullStr A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
title_full_unstemmed A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
title_short A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger
title_sort three level dual active bridge converter with blocking capacitors for bidirectional electric vehicle charger
topic Asymmetric
blocking capacitor
dual-active-bridge
three-level
url https://ieeexplore.ieee.org/document/8918181/
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