VIENNA rectifier has emerged as a promising topology for ac–dc power converter, but it has the problem of dc-link output voltage surge under no-load condition. In this article, a high-reliability hardware auxiliary circuit and an easy-implement software regulation algorithm are proposed to achieve voltage stability. First, voltage-oriented current cross-decoupling control strategy is introduced and the reason of the voltage surge has been analyzed using equivalent circuit model. Second, the equivalent circuit model of different working state for auxiliary circuit in association with VIENNA rectifier are described, along with introducing the selection of device parameters in the auxiliary circuit. Meanwhile, the mechanism of two working modes in the software regulation algorithm is analyzed to make the VIENNA work in boost and buck mode to achieve dc-voltage stability. Finally, the feasibility and effectiveness of the proposed methods have been verified using experimental results. The proposed methods not only suppress the dc-voltage surge but also exhibit a good performance in terms of supply-side power factor (PF) and dc voltage in a VIENNA rectifier, meanwhile maintaining the system adaptability under circumstance of the load step.


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    Title :

    Study of Constant DC-Voltage Control for VIENNA Rectifier Under No-Load Condition


    Contributors:
    Song, Weizhang (author) / Yang, Yang (author) / Du, Mengyu (author) / Wheeler, Patrick (author)


    Publication date :

    2025-02-01


    Size :

    3637226 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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