A high-quality power supply is required for the proper functioning of the electric vehicle (EV) charging system. However, the voltage quality is one of the significant issues in the distribution grid. This article aims to examine the impacts of voltage disturbance on EV batteries and charging systems, and provides a fault ride-through capability (FRTC) to enhance the voltage quality. The charging system is constructed by the three-phase controlled rectifier and the dc–dc converter. The EV battery pack is modeled with lithium-ion batteries. The FRTC system is designed to improve the voltage quality, and it is achieved through the dynamic voltage restorer. It protects the EV batteries and charging system from the critical voltage sag levels. The performance of the proposed EV charging station (EVCS) has been investigated in 30%, 60%, and 90% voltage sag through the MATLAB/Simulink platform. Also, the real-time validation has been carried out by the software-in-the-loop test with the help of the dSPACE (DS1202) real-time system. The EVCS with an FRTC system provides better performance than the conventional EVCS.

中文翻译：

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临界电压条件下电动汽车充电站故障穿越能力的影响


电动汽车 (EV) 充电系统的正常运行需要高质量的电源。然而，电压质量是配电网的重要问题之一。本文旨在研究电压扰动对电动汽车电池和充电系统的影响，并提供故障穿越能力（FRTC）来提高电压质量。充电系统由三相可控整流器和dc-dc变换器构成。电动汽车电池组采用锂离子电池建模。 FRTC系统旨在改善电压质量，它是通过动态电压恢复器来实现的。它可以保护电动汽车电池和充电系统免受临界电压骤降水平的影响。已通过 MATLAB/Simulink 平台对所提出的电动汽车充电站 (EVCS) 在 30%、60% 和 90% 电压暂降下的性能进行了研究。此外，在 dSPACE (DS1202) 实时系统的帮助下，通过软件在环测试进行了实时验证。具有 FRTC 系统的 EVCS 提供比传统 EVCS 更好的性能。