Modular parallel inverters with interleaving are a cost-effective approach to improve system performances. In this article, a simple distributed carrier phase shifting control method with the local controller is proposed. First, the resultant current harmonics for modular parallel inverters are analyzed considering the crystal oscillator frequency deviation. Then, a NOR gate circuit-based synchronous signal generator is constructed, which generates a common low-frequency digital synchronous signal to trigger the carrier phase shifting control. With the carrier phase detection and error compensation considering the time delay, a proportional carrier phase shifting controller with detailed parameter design considerations is proposed to dynamically adjust the carrier relative phase angles of parallel modules until they are properly interleaved. The proposed method has overcome the issue of a single point of failure (i.e., high reliability) and is immune to sampling error and line impedance voltage drop (i.e., high accuracy). Finally, different carrier phase shifting methods are compared and the experimental results have verified the effectiveness of the proposed method.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Distributed Carrier Phase Shifting Control Method for Modular Interleaved Parallel Inverters


    Contributors:
    He, Shiming (author) / Liu, Bangyin (author)


    Publication date :

    2023-06-01


    Size :

    5607239 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Enhanced phase-shifted PWM carrier disposition for interleaved voltage-source inverters

    Capellá Frau, Gabriel José / Pou Félix, Josep / Ceballos Recio, Salvador et al. | BASE | 2014

    Free access



    Improved interleaved parallel SWISS rectifier

    YAN JINGBIN / LI HANGTIAN / LIU MINGLIANG | European Patent Office | 2021

    Free access

    Virtual impedance attenuation based control of parallel inverters

    Ningning Li / Xisheng Tang / Xiaofeng Zhang et al. | IEEE | 2014