This paper introduces a new converter for implementing CC and CV charging strategies for battery electric vehicles by using an isolated full-bridge converter with adding a variable-resonant tank. Thanks to the variable-resonant tank, the proposed converter is able to implement CC and CV control strategies with a fixed-switching frequency and not using any regulation for the primary switches. This capability of non-regulation is achievable due to inherent characteristics (constant-current frequency and constant-voltage frequency) of the variable-resonant tank. Since the proposed converter only operates at these resonant frequencies, it can achieve the ZVS and ZCS for all semiconductor devices. A design optimization framework is used to design the resonant tanks to properly achieve all advantages. To verify the improved performances, a software simulation of 3.3 kW was conducted. The results have shown that the proposed converter can charge the battery with a constant current of 7.8 A, a constant voltage of 420 V at a fixed frequency of 50 kHz.
Original languageEnglish
Title of host publication2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Place of PublicationGenova, Italy
Number of pages9
ISBN (Electronic)978-9-0758-1531-3
ISBN (Print)978-1-7281-2361-5
Publication statusPublished - 3 Sep 2019

ID: 49410312