This paper adopts Buck/Boost and CLLLC cascade topology. Buck/Boost-CLLLC two-stage bidirectional DC/DC converter topology and its control strategy are suitable for medium and high-power applications with large fluctuation range of input voltage and bidirectional flow of power and have the advantages of wide input voltage range and high efficiency. Aiming at Buck/Boost-CLLLC two-stage bidirectional DC/DC converter, the working principle of bidirectional Buck/Boost converter and bidirectional CLLLC resonant converter is analyzed. The small-signal model of bidirectional Buck/Boost converter and bidirectional CLLLC resonant converter is built. A dual-loop control strategy for two-stage DC/DC converter is proposed, and a dual-loop controller is designed. Finally, the simulation model is built to verify. The validity of double-loop control strategy of Buck/Boost-CLLLC two-stage bidirectional DC/DC converter in wide input voltage range is verified. And the bidirectional power flow of Buck/Boost-CLLLC two-stage bidirectional converter is verified.


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    Title :

    Double-Loop Control Strategy for Buck/Boost-CLLLC Two-Stage Bidirectional DC/DC Converter


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Jia, Limin (editor) / Qin, Yong (editor) / Liu, Baoming (editor) / Liu, Zhigang (editor) / Diao, Lijun (editor) / An, Min (editor) / Huang, Linghang (author) / Chen, Jie (author) / Qiu, Ruichang (author) / Liu, Zhigang (author)

    Conference:

    International Conference on Electrical and Information Technologies for Rail Transportation ; 2019 ; Qingdao, China October 25, 2019 - October 27, 2019



    Publication date :

    2020-04-08


    Size :

    11 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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