Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs) : A Critical Review

Nasr Esfahani, Fatemeh and Darwish, Ahmed and Ma, Xiandong and Twigg, Peter (2024) Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs) : A Critical Review. Energies, 17 (10): 2285. ISSN 1996-1073

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Abstract

The rising Greenhouse Gas (GHG) emissions stemming from the extensive use of automobiles across the globe represent a critical environmental challenge, contributing significantly to phenomena such as global warming and the deterioration of air quality. To address these challenges, there is a critical need for research and development in electric vehicles (EVs) and their associated charging infrastructure, including off-board and on-board chargers (OBCs). This paper aims to bridge the gaps in existing review literature by offering a comprehensive review of both integrated and non-integrated OBCs for EVs, based on the authors’ knowledge at the time of writing. The paper begins by outlining trends in the EV market, including voltage levels, power ratings, and relevant standards. It then provides a detailed analysis of two-level and multi-level power converter topologies, covering AC-DC power factor correction (PFC) and isolated DC-DC topologies. Subsequently, it discusses single-stage and two-stage non-integrated OBC solutions. Additionally, various categories of integrated OBCs (iOBCs) are explored, accompanied by relevant examples. The paper also includes comparison tables containing technical specifications and key characteristics for reference and analysis.