A common ground switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for EVs with hybrid energy sources

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

Abstract

A common ground switched-quasi-Z-source bidirectional DC-DC converter is proposed for electric vehicles (EVs) with hybrid energy sources. The proposed converter is based on the traditional two-level quasi-Z-source bidirectional DC-DC converter, changing the position of the main power switch. It has the advantages of a wide voltage gain range, a lower voltage stress across the power switches, and an absolute common ground. The operating principle, the voltage and current stresses on the power switches, the comparisons with the other converters, the small signal analysis and the controller design are presented in this paper. Finally, a 300W prototype with Uhigh=240V and Ulow=40~120V is developed, and the experimental results validate the performance and the feasibility of the proposed converter.

Citation

Zhang, Y., Liu, Q., Li, J., & Sumner, M. (2018). A common ground switched-quasi-Z-source bidirectional DC-DC converter with wide-voltage-gain range for EVs with hybrid energy sources. IEEE Transactions on Industrial Electronics, 65(6), https://doi.org/10.1109/TIE.2017.2756603

• Journal Article Type: Article
• Acceptance Date: Sep 7, 2017
• Online Publication Date: Sep 26, 2017
• Publication Date: Jun 30, 2018
• Deposit Date: Oct 25, 2017
• Publicly Available Date: Oct 25, 2017
• 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: 65
• Issue: 6
• DOI: https://doi.org/10.1109/TIE.2017.2756603
• Keywords: Bidirectional DC-DC converter, common ground, EVs, hybrid energy sources, switched-quasi-Z-source, wide voltage gain range
• Public URL: https://nottingham-repository.worktribe.com/output/944454
• Publisher URL: http://ieeexplore.ieee.org/document/8049380/
• Additional Information: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.