A Four-Phase High Voltage Conversion Ratio Bidirectional DC-DC Converter for Battery Applications

Li-Kun Xue, Ping Wang, Yi-Feng Wang, Tai-Zhou Bei and Hai-Yun Yan
Additional contact information
Li-Kun Xue: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Ping Wang: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Yi-Feng Wang: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Tai-Zhou Bei: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China
Hai-Yun Yan: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

Energies, 2015, vol. 8, issue 7, 1-28

Abstract: This study presents a four-phase interleaved high voltage conversion ratio bidirectional DC-DC converter circuit based on coupled inductors and switched capacitors, which can eliminate the defects of conventional high voltage conversion ratio bidirectional DC-DC converters in terms of high-voltage/current stress, less efficiency and low-power limitation. Parallel channels are used to reduce current stress at the low-voltage side and series connected switched capacitors are used to enlarge voltage conversion ratio, reduce voltage stress and achieve auto current sharing. This paper proposes the operation principle, feature analysis and optimization design considerations. On this basis the objectives of high voltage conversion ratio, low voltage/current stress, high power density, high efficiency and high-power applications can be achieved. Some experimental results based on a 500 W prototype converter (24 V to 48 V at low-voltage side, 400 V at high-voltage side) are given to verify the theoretical analysis and the effectiveness of the proposed converter.

Keywords: battery; bidirectional DC-DC converter; high conversion ratio; interleaved; switched capacitor; coupled inductor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://www.mdpi.com/1996-1073/8/7/6399/pdf (application/pdf)
https://www.mdpi.com/1996-1073/8/7/6399/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:8:y:2015:i:7:p:6399-6426:d:51678

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().