Resonant converters are widely used topologies in applications demanding high gain, and high power density with higher efficiency due to their soft switching capabilities enabling higher switching frequency operations. Modeling techniques such as extended describing function-based method, dq based models are evolving in the literature to obtain plant and control transfer functions for resonant converters. In this paper, an attempt is made to obtain the model of a digitally controlled series resonant converter hardware prototype using the Software Frequency Response Analyzer (SFRA) tool considering wide line and load variations. Based on the obtained plant model, the controller is implemented in $a$ DSP, and the frequency response plots of the plant model, and compensated open loop gain obtained using the SFRA tool are presented for a 500 W digitally controlled Series Resonant Converter (SRC). The obtained plant model, and compensated loop gain from the hardware prototype are in good agreement with those obtained from the simulated switching converter model. The implemented compensator is effective in optimizing the dynamic performance of the converter and obtained closed-loop operation results are presented.


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    Title :

    Modeling and Control of Digitally Controlled Series Resonant Converter Using Software Frequency Response Analysis


    Contributors:


    Publication date :

    2023-12-12


    Size :

    1533164 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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