Enhancing Transient Response in a DC-DC Converter for Electric Vehicle DC Fast Charging Applications Using Fractional-Order PI Control

Deepti Thaliyadath, Deepa Kaliyaperumal and Mohan Lal Kolhe ()
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Deepti Thaliyadath: Department of EEE, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru 560035, India
Deepa Kaliyaperumal: Department of EEE, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Bengaluru 560035, India
Mohan Lal Kolhe: Faculty of Engineering and Science, University of Agder, 4604 Kristiansand, Norway

Energies, 2024, vol. 17, issue 17, 1-20

Abstract: DC fast charging is critical for the widespread adoption of electric vehicles (EVs) due to its impact on convenience, economics, and environmental sustainability. Due to the critical role of DC fast charging in EV adoption, improving its efficiency and performance is paramount. This paper presents a Fractional-Order PI (FOPI) controller for obtaining a well-regulated output voltage of a Dual Active Bridge (DAB) converter, a widely used topology in EV applications. The proposed FOPI is validated to the conventional PI controller in a simulated DAB model that is relevant to DC fast charging applications. The evaluation is performed, and various time-domain parameters and performance indices to evaluate the dynamic response of the model are considered. The results are expected to demonstrate significant improvement in the converter’s transient and steady-state response using the proposed FOPI controller compared to the conventional PI controller, contributing to a more efficient and robust DC fast charging system. This improvement can translate to faster charging times, better stability, and potentially reduced stress on the EV battery during DC fast charging.

Keywords: fractional-order; single phase shift; dual active bridge (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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