2025 年 14 巻 3 号 p. 505-506
This letter presents a condition-monitoring method of a DC-link capacitor in a vehicle-to-everything (V2X) bidirectional electric vehicle (EV) charger. EVs have gained considerable attention because of portable energy sources, thereby resulting in the development of V2X bidirectional EV chargers. Surveys of reliability in power electronics indicare that 20-30% of converter failures are attributed to capacitors. The proposed method enables condition monitoring of DC-link capacitors for the charge or discharge output changes.
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