A Variable Switching Frequency Front-End Converter for EV Chargers
Enhancing Efficiency and Minimizing Harmonics
Y. Wu (TU Delft - DC systems, Energy conversion & Storage)
P. Bauer – Promotor (TU Delft - DC systems, Energy conversion & Storage)
Z. Qin – Copromotor (TU Delft - DC systems, Energy conversion & Storage)
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Abstract
E-mobility stands as a pivotal part of the roadmap toward a sustainable society, with electric vehicle (EV) charging techniques playing a crucial role in this era of transportation electrification. The integration of numerous EV chargers catering to diverse EVs presents significant challenges, not only in power electronics design but also in interfacing with the power grid. Over the past decades, various variable switching frequency methods have been explored to design highly efficient, lightweight, and cost-effective power electronics converters. These methods aim to strike a balance between efficiency and the size of magnetic components. Additionally, the proliferation of supra-harmonics in EV charging stations connected to the grid has been increasingly observed and reported. Lastly, ensuring control stability of the grid-tied power-factor-correction (PFC) converter is vital for the operation of both the grid and EV charger…