This paper presents the design and analysis of a new five-level single-phase transformer-less current source inverter (CSI) topology for the minimization of ground/leakage current in PV grid integration systems. The topology is configured using inductors & high and low-frequency groups of switches. The Pulse Width Modulation (PWM) is applied to a high-frequency group of switches to fulfill the charging & discharging of inductor currents and the low-frequency group of switches is operated to obtain bi-directional current/voltage at the output. The topology is controlled to limit the common-mode voltage (CMV) frequency at line frequency and thereby the leakage currents are shown minimized. The operation of the converter and MATLAB-based simulation results are presented in the work to showcase the merits of the proposed topology in improving the voltage/current profiles in comparison with the existing ones.


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    Title :

    A Single Phase Transformerless CSI Inverter Topology for Minimization of Leakage Current in Grid Integrated PV Systems


    Contributors:


    Publication date :

    2022-08-04


    Size :

    465570 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English