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A 120-kW electric vehicle DC charger with two charging guns

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Abstract

New energy electric vehicles will become a rational choice to realize the replacement of clean energy in the field of transportation; the advantages of new energy electric vehicles depend on the batteries with high energy storage density and the efficient charging technology. This paper introduces a 120-kW electric vehicle DC charger. The DC charger has two charging units that can operate independently. It can not only charge the batteries of one electric vehicle with a single gun, but also charge the batteries of two electric vehicles with two guns at the same time. Therefore, the utilization rate of the charger can be improved. The DC charger can output a wide range of DC voltage to meet the working voltage of the battery. Each charging unit includes three PWM rectifiers, three DC converters, etc. The charging unit can increase the charging power by paralleling multiple PWM rectifiers and multiple DC converters, and it has a certain degree of safety redundancy. The feasibility of the DC charger and the effectiveness of the control strategy of each component of the charging unit are verified through simulation and experiment. The DC charger and its control technology provide a technical guarantee for the application of new energy electric vehicles.

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The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (52067008) and the Science and Technology Research Project of the Education Department of Jiangxi Province of China (GJJ210823).

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Authors and Affiliations

  1. School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou, 341000, Jiangxi Province, China

    Weiliang Wu & Xiping Liu

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  1. Weiliang Wu
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  2. Xiping Liu
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Contributions

Weiliang Wu was involved in technical research, simulation modeling, experimental platform building and testing, software and paper writing. Xiping Liu done technical proposal guidance, experiment guidance, paper review and funding acquisition.

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Correspondence to Weiliang Wu.

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There were no human subjects. There were no animal subjects. The paper did not involve ethical issues.

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Wu, W., Liu, X. A 120-kW electric vehicle DC charger with two charging guns. Electr Eng 105, 1729–1746 (2023). https://doi.org/10.1007/s00202-023-01762-1

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  • DOI: https://doi.org/10.1007/s00202-023-01762-1

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