This paper proposes a power decoupling solution based on improved single-phase Y-source inverter with no additional power semiconductors. Single-phase inverter would cause voltage and current ripples on the dc link because of double-frequency power ripple. Commonly, large electrolytic capacitors are connected to dc link in H- bridge inverter to accomplish power decoupling. However, electrolytic capacitors would affect the reliability and lifetime of PV systems. As a result, the improved Y-source inverter is utilized for power decoupling instead, with only two capacitors added between the midpoint and each inverter arm. A corresponding control method is proposed to ensure the power ripple transferring towards the two decoupling capacitors without affecting the output voltage. Finally, a 200W laboratory prototype is built based on a TMS320F2812 digital signal processor to verify the performance of the proposed power decoupling solution.


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    Title :

    A power decoupling solution for improved single-phase Y-Source inverter


    Contributors:
    Ran, Yan (author) / Wang, Wei (author) / Liu, Kuan (author) / Liu, Hongpeng (author)


    Publication date :

    2017-08-01


    Size :

    741122 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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