Overview of Isolated Bidirectional DC–DC Converter Topology and Switching Strategies for Electric Vehicle Applications

Zhenkun Wang, Xianjin Su, Nianyin Zeng and Jiahui Jiang ()
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Zhenkun Wang: College of Electrical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266000, China
Xianjin Su: Zhangzhou Kehua Technology Co., Ltd., Zhangzhou 363000, China
Nianyin Zeng: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361000, China
Jiahui Jiang: College of Electrical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266000, China

Energies, 2024, vol. 17, issue 10, 1-29

Abstract: Isolated bidirectional DC–DC converters are becoming increasingly important in various applications, particularly in the electric vehicle sector, due to their ability to achieve bidirectional power flow and their safety features. This paper aims to review the switch strategies and topologies of isolated bidirectional DC–DC converters, with a specific focus on their applications in the field of electric vehicles. From the perspective of topology, PWM-type isolated bidirectional DC–DC converters, dual active bridge converters, and resonant-type isolated bidirectional DC–DC converters constitute the three main categories of these converters. The paper further examines the traditional switch strategies of these converters and discusses how specific switch technologies, such as single-phase shift, expanding-phase shift, double-phase shift, and triple-phase shift, can enhance the overall performance of isolated bidirectional DC–DC converters. The paper meticulously examines the characteristics of each topology and control scheme, as well as their typical use cases in practical applications. Particularly, the paper delves into the applications of isolated bidirectional DC–DC converters in the electric vehicle sector and draws conclusions regarding their potential and trends in future electric vehicle technology.

Keywords: isolated bidirectional DC–DC converters; topological configuration; switching strategies; electric vehicles (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: 2024
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