Browsing by Subject "photovoltaic system"

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    Design of a Highly Efficient Microinverter
    (IEEE, 2016-06) Nezamuddin, Omar; Crespo, Jonah; dos Santos, Euzeli C., Jr.; Department of Electrical and Computer Engineering, School of Engineering and Technology
    This paper proposes a grid-tied single-phase photovoltaic (PV) microinverter consisting of five-level four-switch (5L-4S) DC-AC converter fed by an isolated fly-back DC-DC converter. The microinverter utilizes a split-coil inductor to produce five levels of pulse width modulation (PWM) compared to the three levels of PWM using conventional four-switch topologies. These implementations reduce losses by up to 39% compared to a conventional topology. The results show that the proposed design improves performance throughout the switching frequency spectra with various loads. The theoretical expectations are validated with simulation and experimental results.