Mohd Fayzul Mohammed
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Preferred name
Mohd Fayzul Mohammed
Official Name
Mohd Fayzul , Mohammed
Alternative Name
Mohammed, M. F.
Main Affiliation
Scopus Author ID
36019265100
Researcher ID
GPW-9988-2022

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  • Publication
    Hysteresis current control for single-phase transformerless inverter
    (Intelektual Pustaka Media Utama, 2025-03)
    Aina Suhailah Mohd Azhar
    ;
    Maaspaliza Azri
    ;
    Wahidah Abd Halim
    ;
    Md Hairul Nizam Talib
    ;
    Zulhani Rasin
    ;
    Mohd Fayzul Mohammed
    The total harmonic distortion (THD) of grid current and leakage current are significant for transformerless inverters, as they impact power quality, efficiency, and compliance with grid codes. Monitoring and minimizing these currents ensure safe and reliable grid integration of photovoltaic (PV) systems while reducing electromagnetic interference. Therefore, in this paper, the analysis THD of grid current and leakage current is described. The bipolar pulse width modulation (BPWM) technology provides a stable common-mode voltage (200 V), fewer leakage currents (< 30 mA), and better system efficiency, compared to the unipolar pulse width modulation (UPWM) technique. To ensure the inverter complies with the IEC 61000-3-2 class C (THDi < 5%), the current control strategy should be considered during the design of the transformerless inverter. Therefore, this paper presents an implementation and evaluation of the bipolar hysteresis current control (BHCC) technique. In comparison to the BPWM technique, the BHCC technique delivers lower leakage current (0.007274 A), reduced grid current harmonic distortion (1.81%), and increased efficiency.