Renewable energy integration with electric vehicle technology: A review of the existing smart charging approaches

The worsening energy crisis, growing environmental consciousness, and the detrimental consequences of climate change, prompted governments to reduce carbon footprints. One of the approaches involved is adopting green energy technology to charge electric vehicles (EVs). The US Department of Energy estimates that EVs may effectively use 60% of the input energy while driving, twice as much as traditional fossil fuel-based vehicles. Although EVs are tremendously efficient, the amount of greenhouse gas emissions they can reduce relies on the source of electricity needed to power them. To summarize the role of RE as a viable charging alternative, in this study, we analyze four essential elements of EV charging infrastructure, RE-enabled smart charging approaches, utility interest and associated challenges and opportunities. First, the existing RE sources employed for EV charging are discussed with their global adoption, advantages and drawbacks and the leading countries. Second, we presented a thorough investigation of energy storage technologies, charging systems, related power electronics, and smart grid integration to facilitate the adoption of RE in EVs. Third, we discussed in-depth the many industry-implemented smart charging approaches with RE in light of the most recent global trend in EV energy usage. Finally, given the inherent challenges associated with realizing the sustainable transition, we discuss the technological challenges and opportunities related to grid integration, renovation, standardization, maintenance, network security and resource optimization. The authors believe this manuscript will serve as an information cornerstone for all the involved parties and scientific communication to gain a deeper understanding and contribute.

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