By increasing the charging current, fast charging technology can significantly enhance the battery’s state of charge (SOC) over a short time. However, the equivalent resistance of the low-voltage battery for light electric vehicles (LEVs) with fast charging is quite small, posing challenges to enhancing efficiency by tracking the optimal resistance for the inductive power transfer (IPT) system with traditional active rectifiers. To address this issue, a novel cascaded buck active rectifier (CBAR) that integrates a cascaded buck converter with the full-bridge active rectifier (FBAR) is proposed in this article. Compared to the traditional active rectifiers with limited impedance conversion ratio, the proposed CBAR can realize the impedance matching of arbitrary load resistance, as its theoretical resistance conversion ratio range is extended to [0, $+\infty $ ). Furthermore, a simplified segmented modulation method with bridge voltage stress optimization is put forward for the CBAR. By employing the optimal phase angle control strategy, the IPT system with CBAR can maintain the optimal resistance with zero voltage switching (ZVS) turn-on of all MOSFETs throughout the constant power (CP) charging mode and save the real-time communication between transmitting and receiving sides. A 350 W experimental prototype is provided to verify the effectiveness of the proposed rectifier.


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    Titel :

    A Novel Cascaded Buck Active Rectifier With Arbitrary Impedance Conversion Ratio for Inductive Power Transfer System


    Beteiligte:
    Ma, Chunwei (Autor:in) / Qu, Xiaohui (Autor:in) / Liu, Jinghang (Autor:in) / Tan, Linlin (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.12.2024


    Format / Umfang :

    17310430 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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