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Review on unidirectional non-isolated high gain DC-DC converters for EV sustainable DC fast charging applications

Venugopal, R., Balaji, C., Dominic Savio, A., Narayanamoorthi, R., AboRas, Kareem M., Kotb, Hossam, Ghadi, Yazeed Yasin, Shouran, Mokhtar ORCID: and Elgamli, Elmazeg 2023. Review on unidirectional non-isolated high gain DC-DC converters for EV sustainable DC fast charging applications. IEEE Access 11 , pp. 78299-78338. 10.1109/ACCESS.2023.3276860

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Modern electrical transportation systems require eco-friendly refueling stations worldwide. This has attracted the interest of researchers toward a feasible optimal solution for electric vehicle (EV) charging stations. EV charging can be simply classified as Slow charging (domestic use), Fast charging and Ultrafast charging (commercial use). This study highlights recent advancements in commercial DC charging. The battery voltage varies widely from 36V to 900V according to the EVs. This study focuses on non-isolated unidirectional converters for off-board charging. Various standards and references for fast off-board charging have been proposed. Complete transportation is changed to EVs, which are charged by the grid supply obtained by burning natural fuels, contributing to environmental concerns. Sustainable charging from sustainable energy sources will make future EV completely eco-friendly transportation. The research gap in complete eco-friendly transit is located in interfacing sustainable energy sources and fast DC EV charging. The first step towards clean, eco-friendly transportation is identifying a suitable converter for bridging the research gap in this locality. A simple approach has been made to identify the suitable DC-DC converter for DC fast-charging EVs. This article carefully selected suitable topologies derived from Boost, SEPIC, Cuk, Luo, and Zeta converters for clean EV charging applications. A detailed study on the components count, voltage stress on the controlled and uncontrolled switches, voltage gain obtained, output voltage, power rating of the converters, switching frequency, efficiency obtained, and issues associated with the selected topologies are presented. The outcome of this study is presented as the research challenges or expectations of future converter topologies for charging.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: Institute of Electrical and Electronics Engineers
ISSN: 2169-3536
Date of First Compliant Deposit: 12 June 2023
Date of Acceptance: 14 May 2023
Last Modified: 10 Feb 2024 02:11

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