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Hybrid switched-capacitor/switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for hybrid energy sources EVs

Zhang, Yun; Liu, Qiangqiang; Gao, Yongping; Li, Jing; Sumner, Mark

Authors

Yun Zhang

Qiangqiang Liu

Yongping Gao

Jing Li

MARK SUMNER mark.sumner@nottingham.ac.uk
Professor of Electrical Energy Systems



Abstract

In this paper, a hybrid switched-capacitor/ switched-quasi-Z-source bidirectional dc-dc converter is proposed for electric vehicles (EVs) with hybrid energy sources, which has a wide voltage gain range in the bidirectional energy flows. Compared with the traditional quasi-Z-source bidirectional dc-dc converter, the proposed converter only changes the position of the main power switch, and employs a switched-capacitor cell at the output of the high voltage side. Therefore, the advantages of the wide voltage gain range and the lower voltage stresses across the power switches can be achieved. The operating principle, the voltage and current stresses across the power switches and the comparisons with other converters are analyzed in detail. Furthermore, the parameter design of the main components, the dynamic modelling analysis and the voltage control scheme are also presented. Finally, the experimental results obtained from a 400W prototype validate the characteristics and the theoretical analysis of the proposed converter.

Citation

Zhang, Y., Liu, Q., Gao, Y., Li, J., & Sumner, M. (2019). Hybrid switched-capacitor/switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for hybrid energy sources EVs. IEEE Transactions on Industrial Electronics, 66(4), 2680-2690. doi:10.1109/tie.2018.2850020

Journal Article Type Article
Acceptance Date Jun 13, 2018
Online Publication Date Jun 29, 2018
Publication Date 2019-04
Deposit Date Aug 23, 2018
Publicly Available Date Aug 23, 2018
Journal IEEE Transactions on Industrial Electronics
Print ISSN 0278-0046
Electronic ISSN 1557-9948
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 66
Issue 4
Pages 2680-2690
DOI https://doi.org/10.1109/tie.2018.2850020
Keywords Control and Systems Engineering; Electrical and Electronic Engineering
Public URL https://nottingham-repository.worktribe.com/output/1045056
Publisher URL https://ieeexplore.ieee.org/document/8400594/

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