This article presents the state-of-the-art electric vehicle (EV) charging technologies that benefit from the wide bandgap (WBG) devices, which is regarded as the most significant revolution in the power electronics industry in the past few decades. First, the recent WBG device technology evolution, performance comparison, and reliability issues are introduced. Then, topology development, efficiency and power density boost, and cost reduction brought by the WBG devices for EV charging equipment, such as onboard chargers, fast-charging stations, and wireless chargers, are discussed. A figure of merit (FOM) for evaluating the performance of wireless chargers is also proposed. Finally, the EV charging technology roadmap forecast is presented based on the WBG devices' evolutionary trends.

中文翻译：

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宽带隙器件加速电动汽车充电技术革命


本文介绍了受益于宽带隙 (WBG) 器件的最先进的电动汽车 (EV) 充电技术，该技术被视为过去几十年来电力电子行业最重大的革命。首先介绍了近年来WBG器件的技术演进、性能比较和可靠性问题。然后，讨论了WBG器件为电动汽车充电设备（例如车载充电器、快速充电站和无线充电器）带来的拓扑发展、效率和功率密度提升以及成本降低。还提出了用于评估无线充电器性能的品质因数（FOM）。最后，根据WBG器件的演进趋势，提出了电动汽车充电技术路线图预测。